JP2019132752A - Portable electronic apparatus and motion assisting system - Google Patents

Abstract

To realize a portable electronic apparatus with which a TTFF is short and a user's convenience is improved.SOLUTION: When it is determined that the current time has reached a first point of time preceding a start time, a satellite signal is received, and when Ephemeris could not be acquired from the satellite signal, a satellite signal is received after the elapse of a first duration from the first point of time. When it is determined that the current time has reached a second point of time closer to the start time than the first point of time, a satellite signal is received, and when Ephemeris could not be acquired from the satellite signal, a satellite signal is received after the elapse of a second duration shorter than the first duration from the second point of time.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a portable electronic device and an exercise support system.

  Sports activity monitoring devices (hereinafter also referred to as GPS sports equipment) that measure the position and speed of users engaged in sports activities such as running and cycling with a GPS (Global Positioning System) receiver have been put into practical use. By using GPS sports equipment, users can grasp performance information such as their running speed and mileage during sports activities, and are effective in managing the running pace during races such as marathon competitions and triathlon competitions. It can be used for.

  For example, when a GPS sports device is used for a race such as a marathon event, it is desirable that the GPS receiver can measure the position and speed in as short a time as possible after the user gives a measurement instruction to the GPS sports device. . In other words, it is required to shorten the TTFF (Time To First Fix) of the GPS receiver as much as possible. In order to shorten the TTFF, it is known that the GPS receiver may be in a so-called hot start or warm start state. Here, “hot start” in this specification means a state in which the GPS receiver holds an ephemeris (precise satellite orbit information) that is valid at a position and a point at which the position is measured. On the other hand, “warm start” means a state in which the GPS receiver does not hold a valid ephemeris at the position and time at which the position and speed are measured, but holds an almanac (rough satellite orbit information). Further, “cold start” means a state in which the GPS receiver does not hold an effective ephemeris or almanac at the position and time at which the position and speed are measured.

  As a technique for shortening the TTFF, Patent Document 1 describes an information providing system that provides a travel data package including an almanac that is valid for a date and time during travel in advance via the Internet. The user can operate the GPS receiver in a warm start state at the travel destination by storing the travel data package provided by the information providing system in his / her portable terminal and going on a trip. That is, in the travel data package, position data is extracted based on the travel schedule, and by using this position data as an initial position, GPS positioning is performed by a GPS receiver, for example, a portable electronic device, thereby capturing GPS. It can be done at high speed.

JP 2001-109764 A

  In the technique described in Patent Document 1, since the GPS receiver can be operated in a warm start state, TTFF can be shortened compared to the case of a cold start. However, compared to the hot start state, since the effective ephemeris is not held, it is difficult to say that TTFF can be sufficiently shortened as expected.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A portable electronic device according to this application example obtains event information including a timekeeping unit that measures the current time, a satellite positioning unit that receives a satellite signal from a satellite positioning system, and an event start point. And a control unit that controls the satellite positioning unit based on time information from the start time point and the time measurement unit, and the control unit includes a first unit that has the current time before the start time point. If it is determined that the time point 1 has been reached, the satellite positioning unit causes the satellite positioning unit to receive the satellite signal, and when the ephemeris cannot be acquired from the satellite signal, the satellite positioning unit If the satellite signal is received, and the current time has reached a second time that is closer to the start time than the first time, the satellite positioning unit receives the satellite signal, and the satellite signal From Failure to obtain the Femerisu, characterized in that to receive the satellite signal to the satellite positioning unit after the lapse of a short second time than the first time from the second time point.

  According to the portable electronic device according to this application example, the control unit cannot acquire the ephemeris from the satellite signal after determining that the current time has reached the first time that is a predetermined time before the start time. In this case, as the current time approaches the start time, the time interval for executing the reception process of receiving the satellite signal and acquiring the ephemeris is shortened. Thus, after determining that the current time has reached the first time point which is a predetermined time before the start time point, almanac and ephemeris of as many satellites as possible are collected. Then, after determining that the current time has reached the second time point closer to the start time than the first time point, that is, when determining that the current time has approached the start time than the second time point, the control unit It is possible to prioritize the update (acquisition) of visible satellites or the minimum number required for positioning, for example, 4 to 5 ephemeris, by shortening the reception interval of satellite signals. As a result, a sufficient amount of satellite information such as ephemeris acquired up to the start time can be obtained, so that a so-called hot start can be performed, and TTFF can be shortened.

  Application Example 2 In the portable electronic device according to the application example, when the control unit can acquire the ephemeris when the satellite signal is received after the first time has elapsed, the second time point It is preferable to wait for the reception processing of the satellite positioning unit.

  According to this application example, when the ephemeris can be acquired from the satellite signal when the satellite signal is received after the first time has elapsed from the first time point, the reception processing of the satellite positioning unit is made to wait until the second time point. As a result, it is possible to prevent unnecessary consumption of a battery or a rechargeable battery as a power source.

  Application Example 3 In the portable electronic device according to the application example described above, when the control unit is able to acquire the ephemeris when the satellite positioning unit receives the satellite signal after the second time has elapsed, It is preferable to wait for the reception processing of the satellite positioning unit until the current time reaches a third time point closer to the start time point than the second time point.

  According to this application example, when the ephemeris is acquired from the satellite signal when the satellite positioning unit receives the satellite signal after the second time has elapsed from the second time point, the satellite positioning unit receives the signal until the third time point. By making the process stand by, it is possible to prevent unnecessary consumption of a battery or a rechargeable battery as a power source.

  Application Example 4 In the portable electronic device according to the application example described above, it is preferable that when the control unit determines that the current time has reached the third time point, the satellite positioning unit determines the current location. .

  According to this application example, after the third time point where the current time is close to the start time point, the position and movement of the user can be determined without delay from the start time point by causing the satellite positioning unit to determine the current position. .

  Application Example 5 In the portable electronic device according to the application example, when the control unit cannot acquire the ephemeris when the satellite positioning unit receives the satellite signal after the second time has elapsed. If it is determined that the current time has reached a fourth time point between the second time point and a third time point that is closer to the start time point than the second time point, the current position is assigned to the satellite positioning unit. Preferably, it is determined.

  According to this application example, when the ephemeris cannot be acquired from the satellite signal when the satellite positioning unit receives the satellite signal after the second time elapses from the second time point, the current time is set to the second time point, After reaching the fourth time point between the third time point closer to the start time point than the second time point, the user's position and movement can be determined without delay from the start time point by letting the satellite positioning unit determine the current location. It can be performed.

  Application Example 6 In the portable electronic device according to the application example described above, the second period in which the satellite positioning unit is operated when the satellite signal is received after the second time has elapsed is the first time period. It is preferable that the period is longer than a first period in which the satellite positioning unit is operated when the satellite signal is received after elapse.

  According to this application example, as the start time approaches, the operation time in which ephemeris and almanac can be acquired from the satellite signal is lengthened, so the amount of information on ephemeris and almanac that can be acquired in one operation is increased. can do. As a result, since the amount of satellite information such as ephemeris and almanac can be sufficiently obtained when approaching the start time, TTFF can be shortened.

  Application Example 7 In the portable electronic device according to the application example described above, it is preferable that the control unit restricts reception of the satellite signal by the satellite positioning unit when detecting the end of the event.

  According to this application example, by restricting reception of satellite signals by the satellite positioning unit after the end of the event, information (data) processing related to the acquired event can be performed smoothly. Further, it is possible to prevent the battery from being consumed more than necessary.

  Application Example 8 In the portable electronic device according to the application example, the event information includes start position information, the satellite positioning unit determines a current location using the satellite signal, and the control unit When it is determined that the current location is within a predetermined range with respect to the start position information, it is preferable that the satellite positioning unit receives the satellite signal.

  According to this application example, when the current location is in a predetermined range, that is, when the vehicle approaches the start position, the satellite positioning unit performs a process of receiving a satellite signal, and in a period until the start position is reached. A sufficient amount of satellite information such as ephemeris can be obtained, and TTFF can be shortened.

  Application Example 9 An exercise support system according to this application example includes a portable electronic device that is worn by a user and measures the user's exercise, and an information processing apparatus that can communicate with the portable electronic device. In the support system, the portable electronic device includes a time measuring unit that measures the current time, a satellite positioning unit that receives a satellite signal from the satellite positioning system, and an acquisition unit that acquires event information including a start time of the event. And, based on the first communication unit that performs information communication including at least event information between the information processing device, the start time, and the time information from the time measuring unit, the satellite positioning unit is controlled, If it is determined that the current time has reached the first time point before the start time point, the satellite positioning unit can receive the satellite signal and the ephemeris cannot be acquired from the satellite signal. The satellite positioning unit receives the satellite signal after a first time has elapsed from the first time point, and the current time reaches a second time point that is closer to the start time point than the first time point. If the satellite positioning unit receives the satellite signal and the ephemeris cannot be acquired from the satellite signal, the second time is shorter than the first time after the second time elapses. A control unit that causes the satellite positioning unit to receive the satellite signal, and the information processing apparatus transmits the event information to the portable electronic device. And a second communication unit.

  According to the exercise support system according to this application example, the portable electronic device acquires event information including the start time of the event from the information processing apparatus, and the current time is a predetermined time (first time) before the start time. If the ephemeris cannot be acquired from the satellite signal after it has been determined that the time elapses, the time interval for executing the reception process for acquiring the ephemeris by receiving the satellite signal is shortened as the current time approaches the start time. To do. Thus, after determining that the current time has reached the first time point which is a predetermined time before the start time point, almanac and ephemeris of as many satellites as possible are collected. Then, after determining that the current time has reached the second time point closer to the start time than the first time point, that is, when determining that the current time has approached the start time than the second time point, the control unit It is possible to give priority to the update (acquisition) of visible satellites or the minimum number (for example, 4 to 5) of ephemeris necessary for positioning by shortening the reception interval of satellite signals. As a result, a sufficient amount of satellite information such as ephemeris acquired up to the start time can be obtained, so that a so-called hot start can be performed, and TTFF can be shortened.

1 is a schematic configuration diagram showing an outline of an exercise support system according to the present invention. The external view which shows schematic structure of the wearable apparatus used for an exercise | movement assistance system. The external view which shows the example of mounting | wearing of a wearable apparatus. Sectional drawing which shows the structure of a wearable apparatus. The block diagram which shows the structural example of an exercise | movement assistance system and a wearable apparatus. The timing chart which shows reception of a satellite signal in a time series. The flowchart which shows the first half of the positioning procedure of the wearable apparatus when approaching the workout start. The flowchart which shows the second half of the positioning procedure of the wearable apparatus when approaching a workout start. The timing chart which shows the detail of the positioning method of wearable apparatus. The flowchart which shows the modification 1 which concerns on the positioning method of a wearable apparatus. The flowchart which shows the modification 2 which concerns on the positioning method of a wearable apparatus.

  Hereinafter, embodiments of an exercise support system and a portable electronic device according to the present invention will be described. The embodiments described below do not unduly limit the contents of the present invention described in the claims. In addition, all the configurations described in the embodiments are not necessarily essential configuration requirements of the invention.

1. First, a method of an embodiment of the exercise support system according to the present invention will be described. In the following, as an exercise support device (detection device) used in the exercise support system, for example, a wearable device (list device) as a portable electronic device equipped with a pulse wave sensor or a body motion sensor attached to a user's wrist is exemplified. To explain.

  A wearable device as a portable electronic device used in an exercise support system includes a pulse wave sensor that acquires pulse wave information as user's biological information and a body motion sensor that acquires user's motion information (body motion information). It has been. Furthermore, wearable devices include GPS (Global Positioning System) as an example of a positioning system using a position information satellite called Global Navigation Satellite System (GNSS) that acquires user position information. Is provided. The wearable device may be a wearable device that is worn on another part of the user, such as the neck or ankle.

  The pulse wave sensor can acquire pulse wave information such as the pulse rate. For example, a photoelectric sensor (photosensor) is used as the pulse wave sensor. In this case, a method of detecting reflected light or transmitted light of light irradiated on the living body with the photoelectric sensor can be considered. Since the amount of light absorbed and reflected by the living body varies depending on the blood flow in the blood vessel, the sensor information detected by the photoelectric sensor becomes a signal corresponding to the blood flow, etc. Information about beats can be acquired. However, the pulse wave sensor is not limited to a photoelectric sensor, and other sensors such as an electrocardiograph and an ultrasonic sensor may be used.

  The body motion sensor is a sensor that detects a user's body motion. As the body motion sensor, an acceleration sensor, an angular velocity sensor (gyro sensor), an orientation sensor (geomagnetic sensor), an atmospheric pressure sensor (altitude sensor), or the like may be used, but other sensors may be used.

  GPS is also called a global positioning system, and is a satellite positioning system for measuring the current position on the earth based on a plurality of satellite signals. The GPS has a function of performing positioning calculation using GPS time information and orbit information and acquiring a user's position information, and a time correction function in a clock function.

2. Exercise Support System Next, the configuration of the exercise support system according to the present invention will be described with reference to FIGS. 1, 2, 3, 4, and 5. FIG. 1 is a schematic configuration diagram showing an outline of an exercise support system according to the present invention. FIG. 2 is an external view showing a schematic configuration of a wearable device used in the exercise support system. FIG. 3 is an external view showing an example of wearing a wearable device. FIG. 4 is a cross-sectional view showing the configuration of the wearable device. FIG. 5 is a block diagram illustrating a configuration example of the exercise support system and the wearable device.

  As shown in FIG. 1, the exercise support system 100 according to the present embodiment includes a wearable device 200 provided with a pulse wave sensor or a GPS as a biological sensor (photoelectric sensor), and information processing capable of data communication with the wearable device 200. An information processing apparatus 300 as an example of an apparatus, and a server 400 as another example of an information processing apparatus connected to the information processing apparatus 300 via a network NE are included.

  A satellite positioning unit 160 (see FIG. 5) as a global navigation satellite system provided in the wearable device 200 receives a radio wave (satellite signal) from the GPS satellite 8 to correct the internal time, and performs a positioning calculation. It has a function to go and acquire position information.

  The GPS satellite 8 is an example of a position information satellite that orbits a predetermined orbit over the earth. The GPS satellite 8 transmits a high-frequency radio wave on which a navigation message is superimposed, for example, a radio wave having a frequency of 1.57542 GHz (L1 wave) to the ground. In the following description, a radio wave of, for example, 1.57542 GHz on which a navigation message is superimposed is referred to as a satellite signal. The satellite signal is a right-handed circularly polarized wave.

  Currently, there are a plurality of GPS satellites 8 (only four are shown in FIG. 1). In order to identify which GPS satellite 8 the satellite signal is transmitted from, each GPS satellite 8 superimposes a unique pattern of 1023 chips (1 ms period) called a C / A code (Coarse / Acquisition Code) on the satellite signal. In the C / A code, each chip is either +1 or -1, and looks like a random pattern. Therefore, by correlating the satellite signal and the pattern of each C / A code, the C / A code superimposed on the satellite signal can be detected. In this way, it is possible to obtain a satellite number that identifies from which GPS satellite 8 the satellite signal is transmitted.

  The GPS satellite 8 is equipped with an atomic clock. The satellite signal includes extremely accurate GPS time information measured by an atomic clock. A slight time error of the atomic clock mounted on each GPS satellite 8 is measured by the control segment on the ground. The satellite signal also includes a time correction parameter for correcting the time error. The wearable device 200 receives a satellite signal (radio wave) transmitted from one GPS satellite 8 and uses the GPS time information, which is the time information of the GPS satellite 8 included therein, and the time correction parameter to provide time information. Can be obtained. The satellite signal includes ephemeris (precision satellite orbit information) indicating the position of the GPS satellite 8 in the orbit and almanac.

  Here, the ephemeris (precision satellite orbit information) is a function of time that expresses the position of one satellite with high accuracy, and has more parameters for representing the orbit than almanac, so the accuracy of the orbit is high. Acquisition takes approximately 30 seconds to 1 minute. Almanac also shows the approximate position of all satellites as a function of time. Acquisition takes 10 minutes or more.

  Wearable device 200 can perform positioning calculation using GPS time information and orbit information such as ephemeris (precise satellite orbit information) and almanac. The positioning calculation is performed on the assumption that a certain amount of error is included in the internal time of wearable device 200. That is, in addition to the x, y, and z parameters for specifying the three-dimensional position of wearable device 200, the time error is also an unknown. Therefore, the wearable device 200 receives, for example, satellite signals (radio waves) transmitted from three or more GPS satellites 8 and performs positioning calculation using GPS time information and orbit information included therein, The location information of the current location can be acquired.

  The information processing apparatus 300 can be configured by, for example, a smartphone or a tablet-type terminal device. The information processing apparatus 300 is a short-range wireless communication or wired communication (not shown) that can exemplify, for example, Bluetooth (registered trademark) communication with a wearable device 200 using a pulse wave sensor as a biological sensor that is a photoelectric sensor. ) Etc.

  Note that the wearable device 200 and the information processing device 300 in this embodiment have a Bluetooth function, and the information processing device 300 and the wearable device 200 are connected by Bluetooth communication. In Bluetooth communication, the 2.4 GHz band is divided into a plurality of frequency channels, and wireless communication between Bluetooth-equipped devices having a radius of about 10 to 100 m can be performed while performing frequency hopping that randomly changes the frequency to be used. The wearable device 200 and the information processing device 300 can be preferably connected by Bluetooth communication suitable for mobile communication as simple digital wireless communication with less directivity.

  In addition, the Bluetooth communication of the present embodiment applies communication by Bluetooth Low Energy (also referred to as Bluetooth 4.0). Bluetooth Low Energy (hereinafter referred to as BLE) is a standard for short-range wireless communication using 2.4 GHz band radio, and power saving is important. In BLE, communication is performed between the host side and the device side using a profile called GATT (Generic ATTribute). By performing such communication using BLE, it is possible to significantly save power compared to the conventional version, and it is possible to extend the usable time of the wearable device.

  The information processing apparatus 300 can be connected to a server 400 such as a PC (Personal Computer) or a server system via a network NE. The network NE here can use various networks NE such as WAN (Wide Area Network), LAN (Local Area Network), and short-range wireless communication. In this case, the server 400 is realized as a processing storage unit that receives and stores pulse wave information and body motion information measured by the wearable device 200 from the information processing apparatus 300 via the network NE.

  Note that the wearable device 200 may be modified such that the information processing device 300 is omitted and the wearable device 200 and the server 400 are directly connected. In this case, wearable device 200 has a function of processing measurement information included in information processing device 300 and a function of transmitting measurement information to server 400 and receiving information from server 400. However, in the exercise support system 100, the wearable device 200 only needs to be able to communicate with the information processing device 300, and may not be directly connected to the network NE. With such a configuration, the configuration of the wearable device 200 can be simplified.

  The exercise support system 100 is not limited to that realized by the server 400. For example, the exercise support system 100 may be realized by the information processing apparatus 300. For example, the information processing apparatus 300 such as a smartphone is often limited in processing performance, storage area, and battery capacity as compared to a server system, but if processing performance in recent years is taken into consideration, sufficient processing performance can be secured. It is also possible to become. Therefore, if a request for processing performance or the like is satisfied, the information processing apparatus 300 can be the exercise support system 100 according to the present embodiment.

  Further, the exercise support system 100 according to the present embodiment is not limited to that realized by a single device. For example, the exercise support system 100 may include two or more of the wearable device 200, the information processing device 300, and the server 400. In this case, the process executed by the exercise support system 100 may be executed by any one device, or may be distributed by a plurality of devices. Moreover, it is not prevented that the exercise support system 100 according to the present embodiment includes devices different from the wearable device 200, the information processing device 300, and the server 400.

  Furthermore, when the improvement of terminal performance or the usage pattern is taken into consideration, the exercise support system 100 according to the present embodiment can be realized by the wearable device 200.

  Moreover, the process of each part of the exercise support system 100 according to the present embodiment can be realized by a program. That is, the method of the present embodiment is a positioning calculation (automatic) of the user's current position, which is executed based on ephemeris (precision satellite orbit information) indicating the position of the GPS satellite 8 in the orbit, almanac, etc. included in the satellite signal. This is a technique that includes execution of search. Specifically, when the method of the present embodiment determines that the current time has reached the first time before the start time, the satellite positioning unit 160 (see FIG. 5) receives the satellite signal, and the ephemeris is determined from the satellite signal. If the satellite signal cannot be acquired, the satellite positioning unit receives the satellite signal after the first time has elapsed from the first time point, and determines that the current time has reached the second time point that is closer to the start time than the first time point. Then, when the satellite positioning unit receives the satellite signal and the ephemeris cannot be acquired from the satellite signal, the satellite positioning unit receives the satellite signal after a second time shorter than the first time from the second time point. It can be applied to a program that causes a computer to execute a process including a procedure.

  In addition, the exercise support system 100 according to the present embodiment includes a memory that stores information (for example, a program and various data), and a processor that operates based on the information stored in the memory. In the processor, for example, the function of each unit may be realized by individual hardware, or the function of each unit may be realized by integrated hardware. The processor may be, for example, a CPU (Central Processing Unit). However, the processor is not limited to the CPU, and various processors such as a GPU (Graphics Processing Unit) or a DSP (Digital Signal Processor) can be used. The processor may be an ASIC hardware circuit. The memory may be a semiconductor memory such as SRAM (Static Random Access Memory) or DRAM (Dynamic Random Access Memory), a register, or a magnetic storage device such as a hard disk device. Alternatively, an optical storage device such as an optical disk device may be used. For example, the memory stores instructions readable by a computer, and the functions of each part of the exercise support system 100 are realized by executing the instructions by the processor. The instruction here may be an instruction constituting a program or an instruction for instructing an operation to the hardware circuit of the processor.

2.1. Wearable device 200 as a portable electronic device As shown in FIG. 3, a wearable device 200 as a portable electronic device is worn on a given part of a user (for example, a measurement target part such as a wrist), and pulse wave information or Detect position information etc. As shown in FIG. 2, the wearable device 200 includes a housing 30 and a device main body 18 that is in close contact with the user and detects pulse wave information and the like, and a pair for attaching the device main body 18 to the user. And a band portion 10. The device main body 18 including the housing 30 is provided with a display unit 50 and an optical sensor unit 40. The band portion 10 is provided with a fitting hole 12 and a buckle 14. The buckle 14 includes a buckle frame 15 and a locking portion (projection bar) 16. A plurality of push buttons are arranged on the side surface of the housing 30 as the operation unit 130.

  In the following description of the wearable device 200, when the device main body 18 is attached to the user, the side located on the object (subject) side that is the measurement target site is the “back side or back side”, and the opposite side. The display surface side of the device body 18 will be described as “front side or front side”. Further, the “object (target part)” to be measured may be referred to as “subject”. In addition, a coordinate system is set with reference to the housing 30 of the wearable device 200, and the direction intersects the display surface of the display unit 50, and from the back surface to the front surface when the housing 30 on the display surface side of the display unit 50 is the front surface. The direction going to is the Z-axis positive direction. Or you may define the direction which leaves | separates from the housing 30 in the direction which goes to the display part 50 from the optical sensor part 40, or the normal line direction of the display surface of the display part 50 as a Z-axis positive direction. In a state where the wearable device 200 is mounted on the subject, the positive Z-axis direction corresponds to a direction from the subject toward the housing 30. In addition, two axes orthogonal to the Z axis are set as XY axes, and in particular, a direction in which the band portion 10 is attached to the housing 30 is set as the Y axis.

  2 shows the wearable device 200 in a state in which the band unit 10 is fixed using the fitting hole 12 and the locking unit 16 in the direction of the band unit 10 side (the subject in the mounted state on the surface of the housing 30). It is the perspective view seen from the -Z-axis direction which is the surface side which is a side). In the wearable device 200, a plurality of fitting holes 12 are provided in the band portion 10, and mounting to a user is performed by inserting the locking portion 16 of the buckle 14 into any of the plurality of fitting holes 12. The plurality of fitting holes 12 are provided along the longitudinal direction of the band portion 10.

  As shown in FIG. 4, the device main body 18 includes a housing 30 including a first housing 21 and a second housing 22. The second housing 22 is located on the measurement object side when the apparatus main body 18 is attached to the user. The first housing 21 is disposed on the opposite side (front side) to the measurement object side with respect to the second housing 22. And the detection window 221 is provided in the back surface of the 2nd housing 22, and the optical sensor part 40 is provided in the position corresponding to the detection window 221. FIG.

  In FIG. 2, a living body sensor (a photoelectric sensor 401 (see FIG. 4) as a pulse wave sensor for acquiring pulse wave information) is assumed, and light is applied to the surface of the housing 30 on the subject side when the wearable device 200 is mounted. An example in which the sensor unit 40 is provided has been shown. However, the position where the biological sensor is provided is not limited to the example of FIG. For example, the biosensor may be provided inside the housing 30.

  FIG. 3 is a diagram of the wearable device 200 in a state worn by the user as viewed from the side where the display unit 50 is provided (Z-axis direction). As shown in FIG. 3, the wearable device 200 according to the present embodiment has a display unit 50 at a position corresponding to a normal watch dial or a position where numbers and icons can be visually recognized. When the wearable device 200 is mounted, the second housing 22 (see FIG. 4) side of the housing 30 is in close contact with the subject, and the display unit 50 is in a position where the user can easily see.

  Next, the configuration of the device main body 18 of the wearable device 200 will be described with reference to the cross-sectional structure example shown in FIG. 4 and the functional block example shown in FIG. As shown in FIG. 4, in addition to the first housing 21 and the second housing 22, the device main body 18 includes a module substrate 35, an optical sensor unit 40 connected to the module substrate 35, a circuit substrate 41, a panel Frame 42, circuit case 44, LCD 501 constituting display unit 50, acceleration sensor 55 as an example of a body motion sensor, azimuth sensor 56, angular velocity sensor (gyro sensor) 58, secondary battery 60, satellite An antenna 65 and a control unit (CPU) 90 are included. However, the configuration of wearable device 200 is not limited to the configuration shown in FIG. 4, and other configurations can be added or a part of the configuration can be omitted.

  The first housing 21 may include a body portion 211 and a glass plate 212. In this case, the body 211 and the glass plate 212 are used as outer walls for protecting the internal structure, and the display unit 50 such as a liquid crystal display (hereinafter, LCD 501) provided directly below the glass plate 212 through the glass plate 212. It is good also as a structure which a user can visually recognize. That is, in the present embodiment, various information such as detected biological information, information indicating an exercise state, or time information is displayed using the LCD 501, and the display is presented to the user from the first housing 21 side. Also good. Here, an example in which the top plate portion of the device body 18 is realized by the glass plate 212 is a transparent member that can visually recognize the LCD 501, and can protect the configuration included in the housing 30 such as the LCD 501. The top plate portion can be made of a material other than glass, such as a transparent plastic.

  The second housing 22 is provided with a detection window 221 and a light shielding part 222. The second housing 22 is provided with an optical sensor unit 40 at a position corresponding to the detection window 221. The detection window 221 is configured to transmit light, and light emitted from the light emitting unit 150 (see FIG. 5) included in the optical sensor unit 40 passes through the detection window 221 and is a subject (measurement target). To the object). The reflected light reflected by the subject also passes through the detection window 221 and is received by the light receiving unit 140 (see FIG. 5) of the optical sensor unit 40. That is, by providing the detection window 221, it is possible to detect biological information using the photoelectric sensor 401. The optical sensor unit 40 is connected to the module substrate 35. The module substrate 35 is electrically connected to the circuit substrate 41 using a flexible substrate 47 or the like.

  On the circuit board 41, a panel frame 42 for guiding a display panel such as an LCD 501 is disposed on one surface, and a circuit case 44 for guiding the secondary battery 60 or the like is disposed on the other surface. The circuit board 41 includes a circuit for controlling the satellite positioning unit 160 (see FIG. 5) including the satellite antenna 65, a circuit for driving the optical sensor unit 40 to measure a pulse wave (pulse), a circuit for controlling the time measuring unit 110, A control unit 90 is mounted as a control circuit for controlling a circuit for driving the LCD 501 and a circuit for driving the body motion sensor unit 170 and acquiring sensor data. The circuit board 41 is electrically connected to the electrodes of the LCD 501 via a connector (not shown). The LCD 501 displays the monitored user movement trajectory, pulse measurement data such as the pulse rate, time information, and the like according to each mode.

  In the circuit case 44, a secondary battery 60 (lithium secondary battery) as a rechargeable battery is guided. The secondary battery 60 is connected to the circuit board 41 through the connection board 48 or the like at both electrodes, and supplies power to a circuit that controls the power supply. Power is supplied to each circuit by being converted into a predetermined voltage by this circuit, and the circuit for driving the optical sensor unit 40 to detect the pulse, the circuit for driving the LCD 501, and the control circuit for controlling each circuit (control) Unit 90) and the like are operated. The secondary battery 60 is charged through a pair of charging terminals that are electrically connected to the circuit board 41 by a conductive member (not shown) such as a coil spring. Here, an example in which the secondary battery 60 is used as the battery has been described, but a primary battery that does not require charging may be used as the battery.

  Further, as shown in FIG. 4, the detection window 221 may be formed to extend to a sealing portion 51 provided at a connection portion between the first housing 21 and the second housing 22. Here, the sealing part 51 may be provided with a packing 52 that seals the inside of the housing 30 from the outside. The packing 52 is provided at a connection portion between the first housing 21 and the second housing 22 and seals the inside of the housing 30 from the outside.

  Further, as shown in FIG. 5, the wearable device 200 acquires the optical sensor unit 40, the display unit 50, the first communication unit 80, the control unit 90, the time measuring unit 110, and event information as its functional configuration. An acquisition unit 120, an operation unit 130, a satellite positioning unit 160, a body motion sensor unit 170 as a sensor unit, and a storage unit 180.

  The optical sensor unit 40 detects a pulse wave or the like, and includes a light receiving unit 140 and a light emitting unit 150. As described above, the light sensor unit 40 emits light emitted from the light emitting unit 150 to the subject (object to be measured), and the reflected light is received by the light receiving unit 140 to obtain pulse wave information. Can be detected. The optical sensor unit 40 outputs a signal detected by the pulse wave sensor as a pulse wave detection signal. As the optical sensor unit 40, for example, a photoelectric sensor is used. In this case, a method of detecting reflected light or transmitted light of light emitted from the light emitting unit 150 with respect to a living body (user's wrist) by the light receiving unit 140 is conceivable. In such a method, the amount of light absorbed and reflected by the living body varies depending on the blood flow in the blood vessel, so the sensor information detected by the photoelectric sensor becomes a signal corresponding to the blood flow, etc. By analyzing the signal, it is possible to obtain information on the beat. However, the pulse wave sensor is not limited to a photoelectric sensor, and other sensors such as an electrocardiograph and an ultrasonic sensor may be used.

  Based on an instruction from the control unit 90, the display unit 50 can display various information such as information on the user's biological information and exercise, position information, and time information on the LCD 501, and present them to the user. The display unit 50 can show the position information of the user on the map, and can visually show the movement history plotted on the map as a movement locus to the user. By performing such display, the user can visually recognize the movement trajectory and the like as image information, which makes it easier to grasp the results of running and walking.

  The control unit 90 is a circuit that drives the optical sensor unit 40 to measure pulse waves, a circuit that drives the display unit 50 (LCD 501), a circuit that drives the body motion sensor unit 170 to detect body motion information, and a satellite positioning unit. A control circuit such as a circuit for controlling 160 is configured. The control unit 90 can control timing of position information measurement start (workout start) and measurement end (workout end), switching display modes, and the like by a signal from the operation unit 130.

  The first communication unit 80 can perform information communication including event information with the information processing apparatus 300. Further, the first communication unit 80 can transmit the pulse wave information and the body motion information transmitted from the control unit 90 or the position information (measurement position information) of the user to the information processing apparatus 300.

  The control unit 90 transmits pulse wave information and body motion information detected at each part, user position information, and the like to the first communication unit 80, and transmits the pulse wave information and the information via the first communication unit 80. The body movement information or the user position information (measurement position information) and sensor data are transmitted to the information processing apparatus 300.

  For example, when the wearable device 200 is used in a race such as a marathon event in the measurement of the position information described above, the control unit 90 wears the wearable device 200 in as short a time as possible after the user gives a measurement instruction to the wearable device 200. Control for enabling the (satellite positioning unit 160) to measure the position and speed can be performed.

  For example, when the wearable device 200 is used in a race such as a marathon event, it is desirable that the wearable device 200 can measure the position and speed in as short a time as possible after the user gives a measurement instruction to the wearable device 200. . In other words, it is required to shorten TTFF (Time To First Fix) of wearable device 200 as much as possible. In order to shorten the TTFF, it is known that the wearable device 200 may be in a so-called hot start or warm start state. For example, the control unit 90 can control the acquisition procedure (acquisition method) of position information from a predetermined time before the start time of a race such as a marathon event to immediately put the wearable device 200 into a so-called hot start state. . This acquisition procedure will be described in detail later.

  Further, the control unit 90 can measure the moving distance, moving speed, pitch, pace, and the like of the user in real time using the position information acquired by the satellite positioning unit 160 and the acceleration data acquired by the acceleration sensor 55. it can. Note that the pace indicates the time taken per unit distance.

  The timer 110 measures the current time using, for example, GPS time information acquired by the satellite positioning unit 160 and a time correction parameter. Then, the timer unit 110 outputs the current time measured to the control unit 90.

  The acquisition unit 120 can automatically acquire event information including at least the start time (start time) of the event from the event data registered in the corresponding application via the network NE. Here, the event information can include an event holding location and start position, an event date and time, and event contents (for example, marathon competition, running competition, etc.). The acquisition unit 120 can also be manually input from the information processing apparatus 300 or the like via the first communication unit 80.

  An operation unit 130 composed of push buttons is connected to the control unit 90. The user performs an operation such as pressing a plurality of arranged buttons (operation unit 130), for example, timing of measurement of position information (start of workout) or end of measurement (end of workout), or switching of display modes. Etc. can be instructed.

  The satellite positioning unit 160 includes a satellite antenna 65, a signal processing unit 66, a satellite information acquisition unit 68, and a position calculation unit 69. In the satellite positioning unit 160, the signal processing unit 66 processes the plurality of satellite signals received by the satellite antenna 65, and the satellite signals including the processed plurality of satellite signals, for example, ephemeris (precision satellite orbit information) and almanac, are satellite information. Acquisition unit 68 acquires. Based on the plurality of satellite signals acquired by the satellite information acquisition unit 68, the position calculation unit 69 can perform positioning calculation to determine the measurement position information of the user.

  The satellite information acquisition unit 68 includes, as satellite information, ephemeris, which is a function of time that accurately represents the position of one satellite, and the approximate positions of all satellites, at the acquisition timing based on an instruction from the control unit 90. You can get the almanac represented as a function of time.

  The position calculation unit 69 performs positioning calculation based on the acquired plurality of satellite signals, and outputs a plurality of measurement position information as workout information in a period from the measurement start (workout start) to the measurement end (workout end). Can be determined. The measurement position information determined here is position information related to the current location of the user. In this way, the user in the period from the start of measurement (workout start) to the end of measurement (workout end) based on the measurement position information that is the current location of the user determined using the signal from the satellite of the positioning satellite system Can be determined.

  Note that the measurement start timing and measurement end timing can be determined by the control unit 90 determining based on the button operation of the operation unit 130 or the output of the acceleration sensor 55 or a pulse sensor (not shown).

  The body motion sensor unit 170 as a sensor unit includes an acceleration sensor 55, a direction sensor (geomagnetic sensor) 56, an angular velocity sensor 58, and the like, and detects information related to the movement of the user's body, that is, detects body motion information. Can do. The body motion sensor 170 receives acceleration data from the acceleration sensor 55, orientation data from the orientation sensor (geomagnetic sensor) 56, and from the angular velocity sensor 58 as body motion detection signals that change according to the user's body motion. Will output angular velocity data. Sensor data such as acceleration data, azimuth data, and angular velocity data is output to the control unit 90 or output to the information processing apparatus 300 via the first communication unit 80.

  The storage unit 180 can store biological information such as a pulse wave by the optical sensor unit 40, position information by the satellite positioning unit 160, body movement information by the body movement sensor unit 170, and the like under the control of the control unit 90.

2.2. Information Processing Device The information processing device 300 includes a second communication unit 280 that performs communication processing with the wearable device 200, as shown in FIG. However, the information processing apparatus 300 is not limited to the configuration of FIG. 5, and various modifications such as addition of other components are possible. For example, although not shown, the second communication unit 280 is processed by a processing unit that performs position calculation processing based on measurement information and position information received, a storage unit that stores acquired user information, and the processing unit. It may also include a notification unit for reporting the information, or the optical sensor unit 40, the body motion sensor unit 170, or the satellite positioning unit 160 included in the wearable device 200.

  The second communication unit 280 receives sensor data or measurement information or position information (measurement position information) that is detected and measured by the wearable device 200 and transmitted from the first communication unit 80 of the wearable device 200. In addition, the second communication unit 280 transmits the calculated position information calculated by the information processing device 300, the input event information, and the like to the wearable device 200.

  The information processing apparatus 300 performs a communication process for transmitting the calculated calculation position information, the notification signal, and the like to a notification function unit provided in another terminal device. In this case, it is possible to perform wireless communication processing according to a short-range wireless communication standard such as Bluetooth, for example, without using a mobile phone network or a wireless LAN network. The notification signal transmitted here can be an image signal, a vibration signal, a light emission signal, or the like. The information processing apparatus 300 is connected to a server 400 such as a PC or a server system via a network NE.

3. Location information acquisition procedure (acquisition method)
In order to shorten the TTFF of the wearable device 200, for example, the control unit 90 of the wearable device 200 acquires position information from a predetermined time before the event start time to immediately before the wearable device 200 in a so-called hot start state. The procedure (acquisition method) can be controlled.

  An example of this acquisition procedure will be described below with reference to FIGS. 6, 7A, 7B, and 8. FIG. FIG. 6 is a timing chart showing the reception of satellite signals in time series. FIG. 7A is a flowchart showing the first half of the positioning procedure of the wearable device in the case of approaching the start of workout. FIG. 7B is a flowchart showing the second half of the positioning procedure of the wearable device when the workout is approaching. FIG. 8 is a timing chart showing details of the positioning method of the wearable device. In addition, below, it demonstrates using the same code | symbol as the structure of the exercise | movement assistance system 100 mentioned above.

  As shown in FIG. 6, the acquisition procedure is performed by setting a time before a predetermined time (for example, 2 hours) from the workout start time (event start time) as the start time that is the start time of the event as the first time Is set. FIG. 6 shows the timing for acquiring position information from the first time point to the workout start time (event start time) that is the latter part of the first time point.

  As shown in FIG. 6, the second time point is a time point at which the current time is closer to the start time point than the first time point. The second time point can be set, for example, one hour before the workout start time. The third time point is a time point at which the current time is closer to the start time point than the second time point. The third time point can be set, for example, 15 minutes before the workout start time. The fourth time point is a time point when the current time is set between the second time point and the third time point. The fourth time point can be set, for example, as 30 minutes before the workout start time.

  A specific acquisition procedure (acquisition method) of position information according to the present embodiment will be described with reference to the flowcharts of FIGS. 7A and 7B.

  First, the control unit 90 determines whether or not the first time point before the workout start time (event start time) as the start time point at which the current time is the start time of the event has been reached (step S101). If the control unit 90 determines that the first time point has been reached (step S101: Yes), the control unit 90 causes the satellite positioning unit 160 to perform an auto search to receive the satellite signal, and the ephemeris and almanac are received from the satellite signal. Obtain (step S102).

  Further, when the control unit 90 determines that the first time point has not been reached (step S101: No), the control unit 90 shifts to a flow of auto search performed at a normal interval and determines whether it is a normal auto search timing. Is determined (step S130), and when it is determined that the normal auto search timing is reached (step S130: Yes), the auto search is executed (step S131), and it is determined whether or not the first time point has been reached. Return to (Step S101). If it is determined in step S130 that it is not the normal auto search timing (step S130: No), it is determined whether or not the first time point has been reached (step S101). Here, “normal auto search” means that the satellite positioning unit 160 receives a satellite signal at a predetermined interval, for example, once every hour, and takes about 2 minutes per reception time. It means obtaining satellite information such as ephemeris and almanac.

  Next, the control unit 90 causes the satellite positioning unit 160 to execute an auto search to receive a satellite signal and acquire an ephemeris from the satellite signal (step S102). Then, it is determined whether or not the ephemeris has been acquired from the satellite signal (step S103).

  In this determination, when the ephemeris can be acquired from the satellite signal in this determination (step S103: Yes), the control unit 90 waits for the reception process until the second time point is reached (step S106). In addition, when the ephemeris cannot be acquired from the satellite signal in this determination (step S103: No), the control unit 90 performs the first time (for example, 20 minutes) from the first time point. It is determined whether or not (set) has passed (whether or not the first reception time has been reached) (step S104).

  When it is determined that the first time has elapsed in the determination of whether or not the first time has elapsed (step S104), the control unit 90 proceeds to the next step. Then, the satellite signal is received (step S105). Almanac and other satellite information can be acquired by receiving the satellite signal here. In addition, when it is determined that the first time has not elapsed (No in step S104), the control unit 90 determines whether the first time has elapsed (step S104). The determination of whether time has elapsed or not is repeated until the first time has elapsed.

  Next, the control unit 90 determines whether or not the current time has reached a second time point that is a later time of the first time point (step S107). Then, when it is determined that the second time point has been reached (step S107: Yes), the control unit 90 causes the satellite positioning unit 160 to execute an auto search to receive the satellite signal and acquire the ephemeris from the satellite signal. (Step S108). Then, the control unit 90 determines whether or not the auto search has succeeded, in other words, whether or not the ephemeris has been acquired from the satellite signal (step S109). In addition, when determining in step S107 that the second time point has not been reached (step S107: No), the control unit 90 determines whether the second time has elapsed until the second time has elapsed. The determination (step S107) is repeated at a set predetermined interval.

  When the auto search is successful in step S109, that is, when the ephemeris can be acquired from the satellite signal (step S109: Yes), the control unit 90 reaches the third time point as shown in FIG. 7B ( The reception process is waited until step S125 (Yes) (step S123). As described above, when the auto search is successful when approaching the workout start time, that is, when the ephemeris can be acquired from the satellite signal, the reception process is made to wait, thereby executing the auto search more than necessary. It is possible to suppress the consumption of the battery (rechargeable battery) as the power source.

  When the auto search is not successful in step S109, that is, when the ephemeris cannot be acquired from the satellite signal (step S109: No), the control unit 90 proceeds to the next step shown in FIG. It is determined whether a second time (for example, set to 15 minutes) has elapsed from the second time point (whether the second reception time point has been reached) (step S120). Here, the second time is set to be shorter than the first time. That is, as shown in FIG. 6, the second reception time point is located between the second time point and the third time point.

  When it is determined in step S120 that the second time has not elapsed since the second time point (step S120: No), the control unit 90 returns to step S108 illustrated in FIG. 7A and performs an auto search.

  When determining that the second time has elapsed from the second time point in Step S120 (Step S120: Yes), the control unit 90 causes the satellite positioning unit 160 to perform auto search again to receive the satellite signal, The ephemeris is acquired from the satellite signal (step S121). Then, the control unit 90 determines whether or not the auto search has succeeded, in other words, whether or not the ephemeris has been acquired from the satellite signal (step S122).

  When the auto search is successful in step S122, that is, when the ephemeris can be acquired from the satellite signal (step S122: Yes), the control unit 90 can enter a so-called hot start state in which positioning can be started quickly. The reception process is waited until the third time point is reached (step S125: Yes) (step S123). Here, the third time point is a time point at which the current time is closer to the start time point than the second time point, for example, a time point 15 minutes before the workout start time. As described above, when the auto search is successful when approaching the workout start time, that is, when the ephemeris can be acquired from the satellite signal, the reception process is made to wait, thereby executing the auto search more than necessary. It is possible to suppress the consumption of the battery (rechargeable battery) as the power source.

  If the auto search is not successful in step S122, that is, if the ephemeris cannot be acquired from the satellite signal (step S122: No), the control unit 90 determines whether or not the fourth time point has been reached. A determination is made (step S124). here. The fourth time point is located between the second time point and the third time point closer to the start time point (workout start) than the second time point, for example, 30 minutes of the workout start time. It is the previous time.

  If the control unit 90 determines in step S124 that the fourth time point has not been reached (step S124: No), has the fourth time point been reached until the fourth time point is reached (step S124: Yes)? The determination of whether or not (step S124) is repeated at a set predetermined interval.

  When determining that the fourth time point has been reached (step S124), the control unit 90 proceeds to the next step when determining that the fourth time point has been reached (step S124: Yes). The unit 160 automatically starts positioning (step S110), and determines the current position of the user. In step S110, the satellite positioning unit 160 is automatically started from the fourth time point approaching the start of the workout, so that the satellite positioning unit 160 for making a so-called hot start state is the minimum number necessary for positioning ( For example, updating (acquisition) of 4 to 5 ephemeris can be prioritized.

  Further, the control unit 90 determines whether or not the third time point has been reached (step S125), and if it is determined that the third time point has been reached (step S125: Yes), the control unit 90 also proceeds to the next step. Then, the satellite positioning unit 160 automatically starts positioning (step S110), and determines the current position of the user. As a result, similar to the above, the satellite positioning unit 160 can prioritize the update (acquisition) of the minimum number (for example, 4 to 5) of ephemeris necessary for positioning.

  By step S110, the minimum number (e.g., 4 to 5) of ephemeris necessary for positioning can be updated (acquired), and sufficient amount of satellite information such as ephemeris acquired up to the start time can be obtained. Can do. As a result, the next workout can be started as a so-called hot start possible state.

  Thus, the workout is started in a state where so-called hot start is possible (step S111). By this workout, positioning can be performed without delay from the start time of the event, and the moving distance, moving speed, pitch, pace, and the like of the user can be measured in real time until the end of the workout (step S115). By this workout end (step S115), a series of position information acquisition procedure (acquisition method) by the wearable device 200 is ended.

  According to the wearable device 200 and the exercise support system 100 using the wearable device 200 as described above, the control unit 90 has the current time at a predetermined time (first time) before the start time (workout start time). If it is determined that the ephemeris cannot be acquired from the satellite signal after the determination, the satellite positioning unit 160 receives the satellite signal and acquires the ephemeris as the current time approaches the start time. Reduce the time interval. Thereby, after determining that the current time has reached the first time point which is a predetermined time before the start time point, it is possible to collect almanac and ephemeris of as many satellites as possible. Then, after determining that the current time has reached the second time point closer to the start time than the first time point, that is, when determining that the current time has approached the start time than the second time point, the control unit 90 performs satellite positioning. It is possible to prioritize the update (acquisition) of visible satellites or the minimum number (for example, 4 to 5) ephemeris necessary for positioning by shortening the satellite signal reception interval by the unit 160. As a result, it is possible to obtain a sufficient amount of satellite information such as ephemeris acquired up to the start time, so that the wearable device 200 alone does not use another information processing device (for example, the information processing device 300), so-called hot A start state can be set, and TTFF in wearable device 200 can be shortened.

  Further, when the ephemeris can be acquired from the satellite signal when the satellite signal is received after the first time has elapsed from the first time point, the power receiving power of the satellite positioning unit 160 is kept waiting until the second time point. The battery (rechargeable battery) can be prevented from being consumed more than necessary, and the battery life can be extended.

  In addition, when the ephemeris is acquired from the satellite signal when the satellite positioning unit 160 receives the satellite signal after the second time has elapsed from the second time point, the satellite positioning unit reception process is made to wait until the third time point. As a result, the battery (rechargeable battery) that is the power source can be prevented from being consumed more than necessary, and the battery life can be extended.

  Further, after the third time point where the current time is close to the start point (workout start time), the satellite positioning unit 160 determines the current location, so that the user's position, movement trajectory, etc. are determined without delay from the start point. be able to. That is, a so-called hot start can be performed, and TTFF in the wearable device 200 can be shortened.

  If the ephemeris cannot be acquired from the satellite signal when the satellite positioning unit 160 receives the satellite signal after the second time has elapsed since the second time, the current time is the second time and the second time After reaching the fourth time point, which is closer to the third time point than the start time point, the satellite positioning unit 160 determines the current location so that the user's position, movement trajectory, etc. can be determined without delay from the start time point. be able to. That is, a so-called hot start can be performed, and TTFF in the wearable device 200 can be shortened.

  In the wearable device 200, as shown in the timing chart of FIG. 8, the second period for operating the satellite positioning unit 160 when the satellite signal is received after the second time has elapsed is the satellite after the first time has elapsed. It is preferable that the period is longer than the first period in which the satellite positioning unit 160 is operated when receiving a signal.

  In this way, by making the second period longer than the first period, the operation time during which ephemeris and almanac can be acquired from the satellite signal becomes longer as the current time approaches the start time (workout start time). Therefore, the number of ephemeris and almanac data that can be acquired in one operation can be increased. As a result, a sufficient amount of satellite information such as ephemeris and almanac acquired when approaching the start time can be obtained, so that TTFF can be shortened.

4). Next, a modified example of the positioning method of the wearable device 200 included in the exercise support system 100 will be described with reference to FIGS. 9 and 10. FIG. 9 is a flowchart illustrating Modification 1 according to the positioning method of the wearable device. FIG. 10 is a flowchart illustrating a second modification of the positioning method for the wearable device. In the present description, the same components as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted. Further, for example, the wording related to the timing such as the first time point uses the same wording as in the above-described embodiment.

  First, with reference to the flowchart of FIG. 9, the modification 1 which concerns on the positioning method of the wearable apparatus 200 is demonstrated. The positioning method of Modification 1 is different from the positioning method of the above-described embodiment in that a procedure after the end of workout is added. Therefore, in the following, the procedure after the workout is completed will be described, and the description of the procedure similar to the above-described embodiment will be omitted.

  As shown in FIG. 9, the control unit 90 of the wearable device 200 starts measuring the activity state of the user by starting workout (step S111), and executes the workout at a predetermined interval (step S113). By executing the workout (step S113), the moving distance, moving speed, pitch, pace, and the like of the user can be measured in real time.

  Next, the control unit 90 determines whether or not the event has ended, that is, whether or not the workout has ended (step S114). If it is determined that the workout has not ended (step S114: No), the control unit 90 proceeds to the previous step S113. The workout is continued until it is determined that the workout has ended (step S114: Yes).

  Further, the control unit 90 determines whether or not the event has ended, that is, whether or not the workout has ended (step S114). If it is determined that the workout has ended (step S114: Yes), the predetermined time The reception of the satellite signal by the satellite positioning unit 160 until the time elapses is restricted (step S211). Here, “restricting the reception of satellite signals” means that the satellite positioning unit 160 stops receiving satellite signals, reduces the frequency of satellite signal reception, or shortens the reception time of satellite signal reception. It means to do. Note that lowering the frequency of satellite signal reception can be paraphrased as increasing the satellite signal reception interval.

  Next, the control unit 90 determines whether or not a predetermined time has elapsed since the end of the workout (step S212). In this determination, if the predetermined time has not elapsed since the end of the workout (step S212: No), the control unit 90 returns to the previous step S211 to suppress the satellite positioning unit 160 from receiving the satellite signal. continue.

  Further, when it is determined in step S212 that the predetermined time has elapsed since the end of the workout (step S212: Yes), the control unit 90 performs an auto search (step S213), and ends the measurement. Is determined (step S214: Yes), the series of procedures is terminated. If it is determined that there is no instruction to end measurement (step S214: No), execution of auto search (step S213) is continued.

  According to the positioning method of wearable device 200 according to Modification 1 described above, information (data) processing related to the acquired event is performed by suppressing reception of satellite signals by satellite positioning unit 160 after the end of the event. It is possible to prioritize information (data) processing smoothly.

  Further, by suppressing the reception of the satellite signal by the satellite positioning unit 160 after the end of the event, it is possible to prevent the battery (rechargeable battery) that is a power source due to the reception of the satellite signal from being consumed more than necessary, and to extend the battery life. can do.

  Next, with reference to the flowchart of FIG. 10, Modification 2 according to the positioning method of the wearable device 200 will be described. The positioning method of Modification 2 is a procedure for automatically starting positioning based on the current location that can be determined using the received satellite signal.

  As shown in FIG. 10, first, the control unit 90 of the wearable device 200 causes the satellite positioning unit 160 to receive a satellite signal (step S310) and determines the current location of the user (step S311).

  Next, the control unit 90 determines whether or not the current location of the user is within a predetermined range with respect to start position information included in the event information, for example, an event start position such as a marathon event start position. Determination is made (step S312). If the current location of the user is not within the predetermined range (step S312: No), the control unit 90 returns to the step of causing the satellite positioning unit 160 to receive the satellite signal (step S310).

  If the current location of the user is within the predetermined range (step S312: Yes), the control unit 90 proceeds to the next step and causes the satellite positioning unit 160 to start positioning automatically (step S313). When it is determined that the user's current location is within the predetermined range, in other words, when it is determined that the user has approached the start position of the event, in step S313, the positioning is automatically started, so-called hot start. In order to achieve this state, the satellite positioning unit 160 can prioritize the update (acquisition) of the minimum number (for example, 4 to 5) of ephemeris necessary for positioning. In this way, the minimum number (e.g., 4 to 5) of ephemeris required for positioning can be updated (acquired), and a sufficient amount of satellite information such as ephemeris acquired up to the start point can be obtained. Can do. As a result, the next workout can be started as a so-called hot start possible state.

  Thus, the workout is started in a state where so-called hot start is possible (step S314). By this workout, positioning can be performed without delay from the start time of the event, and the moving distance, moving speed, pitch, pace, and the like of the user can be measured in real time until the end of the workout (step S315). By this workout end (step S115), a series of position information acquisition procedure (acquisition method) according to the second modification of the wearable device 200 is ended.

  According to the positioning method of the wearable device 200 according to the modified example 2 described above, when the current location of the user enters the predetermined range, that is, approaches the start position, the satellite positioning unit 160 receives the satellite signal. Start positioning automatically. As a result, a sufficient amount of satellite information such as ephemeris can be obtained during the period until the start position is reached, and TTFF can be shortened.

  Note that a plurality of predetermined ranges for the event start position may be set. In this case, the satellite signal reception interval by the satellite positioning unit 160 is greater when entering the small range with respect to the event start position than when entering within the large range with respect to the event start position. It is preferable to shorten the time or to increase the time for one reception. Here, “when it falls within a large range with respect to the start position of the event” can be rephrased as when the current location of the user is located far from the start position of the event. The phrase “when entering a small range with respect to the position” can be rephrased as when the current location of the user is located near the start position of the event.

  In this way, as the current location of the user approaches the event start position, the number of times that ephemeris and almanac can be acquired from the satellite signal can be increased, and the operation time can be increased. Therefore, as the user's current location approaches the start position of the event, the number of ephemeris and almanac data that can be acquired can be increased, and the amount of satellite information such as ephemeris and almanac when approaching the start position can be increased. Since TTFF can be obtained sufficiently, TTFF can be shortened.

  Note that the fact that the current location of the user approaches the start position of the event can be rephrased that the start time of the event is approaching and the time until the start of workout is decreasing.

  In the above-described embodiment, the GPS using the GPS satellite 8 as the position information satellite provided in the global navigation satellite system (GNSS) is described as an example, but this is only an example. The global navigation satellite system includes other systems such as Galileo (EU), GLONASS (Russia), Hokuto (China), and position information satellites that transmit satellite signals such as geostationary satellites such as SBAS and quasi-zenith satellites. Anything is acceptable. That is, the wearable device 200 acquires any one of date information, time information, position information, and speed information obtained by processing radio waves (radio signals) from position information satellites including satellites other than the GPS satellite 8. It may be configured to. The global navigation satellite system may be a regional navigation satellite system (RNSS).

  DESCRIPTION OF SYMBOLS 8 ... GPS satellite, 21 ... 1st housing, 22 ... 2nd housing, 30 ... Housing, 35 ... Module substrate, 40 ... Optical sensor part, 41 ... Circuit board, 50 ... Display part, 55 ... Accelerometer, 56 ... Direction Sensor: 58 ... Angular velocity sensor (gyro sensor), 65 ... Satellite antenna, 66 ... Signal processing unit, 68 ... Satellite information acquisition unit, 69 ... Position calculation unit, 80 ... First communication unit, 90 ... Control unit, 100 ... Exercise support system, 110 ... Timekeeping unit, 120 ... Acquisition unit, 130 ... Operation unit, 140 ... Light receiving unit, 150 ... Light emitting unit, 160 ... Satellite positioning unit, 170 ... Body motion sensor unit, 180 ... Storage unit, 200 ... Mobile Wearable device as a type electronic device, 280 ... second communication unit, 300 ... information processing device, 400 ... server (information processing device as another example), NE ... network Over click.

Claims (9)

A timekeeping section that measures the current time,
A satellite positioning unit that receives satellite signals from the satellite positioning system;
An acquisition unit for acquiring event information including the start time of the event;
A control unit for controlling the satellite positioning unit based on the start time and time information from the time measuring unit,
The controller is
If it is determined that the current time has reached a first time before the start time,
When the satellite positioning unit receives the satellite signal and the ephemeris cannot be acquired from the satellite signal, the satellite positioning unit receives the satellite signal after a first time has elapsed from the first time point,
When it is determined that the current time has reached a second time point that is closer to the start time point than the first time point, the satellite positioning unit receives the satellite signal,
When the ephemeris cannot be acquired from the satellite signal, the satellite positioning unit is caused to receive the satellite signal after a second time shorter than the first time from the second time point. Electronics. In claim 1,
The controller is
When the ephemeris can be acquired when the satellite signal is received after the first time has elapsed, the portable electronic device waits for reception processing of the satellite positioning unit until the second time point. In claim 1 or 2,
The controller is
If the ephemeris can be acquired when the satellite positioning unit receives the satellite signal after the second time has elapsed, the current time reaches a third time point closer to the start time than the second time point. Until this time, the reception processing of the satellite positioning unit is put on standby. In claim 3,
When the control unit determines that the current time has reached the third time point, the control unit causes the satellite positioning unit to determine the current location. In claim 1 or 2,
The controller is
When the ephemeris cannot be acquired when the satellite signal is received by the satellite positioning unit after the second time has elapsed,
When it is determined that the current time has reached a fourth time point between the second time point and a third time point that is closer to the start time point than the second time point, the current position is determined by the satellite positioning unit. A portable electronic device characterized in that In any one of Claims 1-5,
A second period for operating the satellite positioning unit when receiving the satellite signal after the second time has elapsed,
A portable electronic device characterized by being longer than a first period in which the satellite positioning unit is operated when the satellite signal is received after the first time has elapsed. In any one of Claims 1-5,
When the control unit detects the end of the event, the control unit restricts reception of the satellite signal by the satellite positioning unit. In any one of Claims 1-7,
The event information includes start position information,
The satellite positioning unit determines the current location using the satellite signal,
When the control unit determines that the current location is within a predetermined range with respect to the start position information, the control unit causes the satellite positioning unit to receive the satellite signal. An exercise support system comprising a portable electronic device mounted on a user and measuring the user's exercise, and an information processing device capable of communicating with the portable electronic device,
The portable electronic device is:
A timekeeping section that measures the current time,
A satellite positioning unit that receives satellite signals from the satellite positioning system;
An acquisition unit for acquiring event information including the start time of the event;
A first communication unit that performs information communication including at least event information with the information processing apparatus;
Based on the starting time and time information from the timekeeping unit, the satellite positioning unit is controlled,
If it is determined that the current time has reached a first time before the start time,
When the satellite positioning unit receives the satellite signal and the ephemeris cannot be acquired from the satellite signal, the satellite positioning unit receives the satellite signal after a first time has elapsed from the first time point,
When it is determined that the current time has reached a second time point that is closer to the start time point than the first time point, the satellite positioning unit receives the satellite signal,
If the ephemeris could not be acquired from the satellite signal, the control unit that causes the satellite positioning unit to receive the satellite signal after a second time shorter than the first time from the second time point,
The information processing apparatus includes:
A storage unit for storing the event information;
An exercise support system comprising: a second communication unit that transmits the stored event information to the portable electronic device.

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