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CN106595653A - Wearable autonomous navigation system for pedestrian and navigation method thereof - Google Patents

Wearable autonomous navigation system for pedestrian and navigation method thereof Download PDF

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Publication number
CN106595653A
CN106595653A CN201611121949.2A CN201611121949A CN106595653A CN 106595653 A CN106595653 A CN 106595653A CN 201611121949 A CN201611121949 A CN 201611121949A CN 106595653 A CN106595653 A CN 106595653A
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China
Prior art keywords
navigation
information
sensor
pedestrian
integrated treatment
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CN201611121949.2A
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Chinese (zh)
Inventor
曾庆化
张晓雪
孟骞
王敬贤
曾世杰
刘建业
熊智
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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Application filed by Nanjing University of Aeronautics and Astronautics filed Critical Nanjing University of Aeronautics and Astronautics
Priority to CN201611121949.2A priority Critical patent/CN106595653A/en
Publication of CN106595653A publication Critical patent/CN106595653A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/10Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
    • G01C21/12Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
    • G01C21/16Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
    • G01C21/165Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/20Instruments for performing navigational calculations
    • G01C21/206Instruments for performing navigational calculations specially adapted for indoor navigation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42Determining position
    • G01S19/45Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement
    • G01S19/47Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement the supplementary measurement being an inertial measurement, e.g. tightly coupled inertial
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Navigation (AREA)

Abstract

The invention discloses a wearable autonomous navigation system for a pedestrian and a navigation method thereof. The wearable autonomous navigation system comprises five sensor modules and one comprehensive processing module, wherein the five sensor modules are arranged on the head, arms and feet of the pedestrian respectively; each sensor module comprises a first microcontroller, and an inertial measurement unit, a magnetic sensor, a gas pressure sensor and a first Bluetooth unit which are connected with the first microcontroller respectively; the inertial measurement unit comprises a triaxial accelerometer and a triaxial gyroscope; comprehensive processing module comprises a second microcontroller, and a wireless communication unit, a visual sensor, a satellite receiver, a second Bluetooth unit and a display unit which are connected with the second microcontroller respectively. The five sensor modules acquire a variety of navigation information and transmit the navigation information to the comprehensive processing module, and the variety of navigation information are fused to solve out a navigation result. Based on distributed wearable multi-point information acquisition, data fusion and data filtering are performed according to an inertial navigation method and other navigation methods, so that the pedestrian navigation performance is improved.

Description

A kind of Wearable pedestrian autonomous navigation system and its air navigation aid
Technical field
The invention belongs to pedestrian navigation technical field, more particularly to a kind of Wearable pedestrian autonomous navigation system and its lead Boat method.
Background technology
Pedestrian navigation positioning is an important new and developing branch in navigation field, can in real time determine and monitor the position of pedestrian The kinestate with human body is put, so as to effectively improve military combat, the quick-reaction capability of the rescue worker that speedily carries out rescue work and tasks carrying Efficiency, while the technology also apply be applicable to civil area to ensure the safety of walk, with wide military affairs with it is civilian Application prospect.Pedestrian navigation technology has become one of study hotspot in current navigation field.
At present more conventional pedestrian navigation method depends on the positioning such as satellite navigation system (GNSS), wireless telecommunications Technology, and it is aided with micro-inertia sensor to improve the seriality and reliability of pedestrian navigation system, but the pedestrian navigation of the species Method mainly faces following key issue:
Satellite navigation system (GNSS) is bad in signal conditioning although having the metastable real-time positioning ability of precision Environment in cannot ensure its positioning performance, although using with the assembled scheme of inertia system can improve to a certain extent navigation system The capacity of resisting disturbance of system, but satellite-signal it is seriously polluted in addition shielding under conditions of, systematic function still cannot be protected.
Although inertial navigation still has one with stronger autonomy, the relatively conventional inertia device of performance of Mierotubule-associated proteins Determine gap, inertia device is also affected with Magnetic Sensor by uncertain factors such as ambient temperatures, makes micro- inertia system complete Into the precision navigation of long period.
Wireless telecommunications can provide navigation locating function with location technology in known region, but in operation, rescue and relief work etc. In circumstances not known, often due to effective wireless sensor node cannot be installed, or wireless communication signal is intercepted by barrier Or interference, it is impossible to realize hi-Fix.
To improve the adaptive capacity to environment of pedestrian navigation system, 2 kinds of methods are primarily present at present:1) using in human body walking The static phase place of gait carry out the zero-velocity curve of micro- inertia system, reduce position error with time accumulating rate.2) using boat position (DR) method of reckoning calculates the position and speed of pedestrian by the estimation in cadence step-length and course.2 kinds of above-mentioned methods are only Can apply in the stable state of motion of human body (such as:At the uniform velocity walking etc.), it is impossible to suitable for non-stationary motion (various gait pattern folders Miscellaneous conversion etc.).
The content of the invention
In order to solve the technical problem that above-mentioned background technology is proposed, the present invention is intended to provide a kind of Wearable pedestrian is certainly leading Boat system and its air navigation aid, make up the deficiency of single pedestrian's air navigation aid, based on distributed wearable multiple spot information gathering, Inertial navigation method and other air navigation aids are carried out into Data Fusion Filtering, pedestrian navigation performance is improved.
In order to realize above-mentioned technical purpose, the technical scheme is that:
A kind of Wearable pedestrian autonomous navigation system, including 5 sensor assemblies and 1 integrated treatment module, the biography Sensor module and integrated treatment module are arranged on pedestrian, wherein 5 sensor assemblies are separately positioned on the head of pedestrian, double On arm and biped, each sensor assembly includes the first microcontroller and the Inertial Measurement Unit, the magnetic that are attached thereto respectively Sensor, baroceptor and the first bluetooth unit, the Inertial Measurement Unit includes three axis accelerometer and three-axis gyroscope, The integrated treatment module include the second microcontroller and be attached thereto respectively wireless communication unit, vision sensor, defend Star receiver, the second bluetooth unit and display unit, integrated treatment module obtains GNSS signal, General Office by DVB Reason module carries out data interaction by wireless communication unit and remote monitoring center, each sensor assembly and integrated treatment module it Between data transfer is realized by the first bluetooth unit and the second bluetooth unit;The various navigation of 5 sensor assemblies collection is believed Integrated treatment module is ceased and sends to, integrated treatment module is merged the various navigation informations for receiving, and calculates navigation As a result, navigation results are shown on the display unit, and is uploaded to remote monitoring center.
Further, the integrated treatment module also includes the temperature sensor being connected with the second microcontroller, according to temperature Degree signal carries out temperature-compensating to other sensors.
Further, the sensor assembly also includes the vision sensor being connected with the first microcontroller.
Further, the remote monitoring center has prestored the cartographic information of navigation area.
Based on the air navigation aid of Wearable pedestrian's autonomous navigation system, comprise the following steps:
(1) using the horizontal attitude angle of the Inertial Measurement Unit initialization system in sensor assembly, inertia measurement list Course heading of the unit with reference to Magnetic Sensor initialization system;
(2) GNSS signal is obtained by DVB, if the GNSS signal for obtaining is effectively, is carried out according to GNSS signal The positioning of initial position;
(3) if the GNSS signal for obtaining is invalid, radio communication positioning, the channel radio are carried out by wireless communication unit Letter positioning includes off-line training step and tuning on-line stage;Off-line training step, gathers the nothing of each sampled point of navigation area Line positions reference information, constructs fingerprint database, and fingerprint database upload remote monitoring center is preserved;Tuning on-line rank Section, goes to be inquired about by the wireless messages of actual acquisition to fingerprint database, immediate reference information is searched out, so as to enter The positioning of line home position;
(4) if wireless communication unit cannot obtain effective or sufficient wireless messages, in starting integrated treatment module Vision sensor, carries out image acquisition, and the information data for collecting is uploaded to into remote monitoring center by integrated treatment module, Remote monitoring center has pre-build the information database of navigation area, the information data that vision sensor is collected and information The information data that data base pre-saves is matched, so as to enter the positioning of line home position;
(5) pedestrian in the process of walking, is used to by method of the pure strapdown with reference to zero-velocity curve to sensor assembly collection Property information is modified:
The width for arranging sliding window is N, is defined as follows variable:
Wherein, ωx、ωy、ωzThe extreme difference of three-axis gyroscope output respectively in the range of sliding window, max represents very big Value, min represents minimum, and A is the maximum amplitude of three axis accelerometer output vector in the range of sliding window, i=0,1,2 ..., N;
Work as ωx、ωy、ωz, in A at least 1 variable value in default threshold range, then it is assumed that current sensor Inertial Measurement Unit in device module is in zero-speed state, carries out zero-velocity curve;
(6) according to the information of 5 sensor assembly collections, the relative position and attitude of human limb and head are judged, from And judge the behavioral pattern of pedestrian;
(7) with reference to the result of step (6), navigation calculation, including four steps are carried out using PDR algorithms:Cadence detection, step Long estimation, course determine and position calculation, comprise the following steps that:
1. cadence detection:The change of accelerometer vertical direction is monitored in real time and draws step number, by arranging threshold value, filter out people The static interference brought with slight jitter of body, obtains accurate step number;
2. step-size estimation:Inertial data is gathered by the sensor assembly for being located at biped, real-time resolving goes out zero in walking At the fast moment, according to the length and interval at zero-speed moment step information is tried to achieve;
3. course determines:Gyroscope signal and magnetic sensor signal are gathered according to sensor assembly, with reference to from remote monitoring The navigation area cartographic information that center obtains, obtains the information in advance course;
4. position calculation:According to the result that 2. and 3. step obtains, the location variation for going up a moment relatively is solved, so as to Obtain the particular location at this moment;
(8) using Multi-information acquisition filtering algorithm by inertial navigation information and GNSS information, radio communication location information, regard Feel that location information is merged, obtain final navigation results.
Further, in step (3), when navigation area is indoor, WiFi signal is selected to carry out radio communication positioning; When navigation area is outdoor, cellular base station signal is selected to carry out radio communication positioning.
Further, in step (8), the Multi-information acquisition filtering algorithm is Kalman filtering algorithm.
Further, in whole navigation procedure, whether real-time judge GNSS signal is effective and first time GNSS is effective The datum mark that the position at moment is combined as inertial navigation information with GNSS information, what afterwards various navigation information fusions were obtained leads Boat result is the relative position with the datum mark.
The beneficial effect brought using above-mentioned technical proposal:
The present invention is based on distributed wearable multiple spot information gathering, on the basis of pedestrian's body shape is accurately judged, Inertial navigation algorithm and other navigation algorithms (vision sensor, DVB, Magnetic Sensor etc.) are carried out into fused filtering, works as inertia Navigation works long hours and occurs more significantly drifting about, and by all kinds of assisting navigation modes error correction is carried out, and leads so as to improve Boat precision, realizes the location navigation service in the case of multi-level, different range.
Description of the drawings
Fig. 1 is the composition frame chart of navigation system of the present invention;
Fig. 2 is the wearing schematic diagram of navigation system of the present invention;
Fig. 3 is the flow chart of air navigation aid of the present invention.
Specific embodiment
Below with reference to accompanying drawing, technical scheme is described in detail.
As shown in Figure 1 and Figure 2, a kind of Wearable pedestrian autonomous navigation system, including 5 sensor assemblies and 1 General Office Reason module, the sensor assembly and integrated treatment module are arranged on pedestrian, wherein 5 sensor assemblies are separately positioned on On the head of pedestrian, both arms and biped, each sensor assembly include the first microcontroller and be attached thereto respectively it is used Property measuring unit, Magnetic Sensor, baroceptor and the first bluetooth unit, the Inertial Measurement Unit include three axis accelerometer And three-axis gyroscope, the integrated treatment module include the second microcontroller and be attached thereto respectively wireless communication unit, Vision sensor, DVB, the second bluetooth unit and display unit.
Integrated treatment module by DVB obtain GNSS signal, integrated treatment module by wireless communication unit with Remote monitoring center carries out data interaction, and the first bluetooth unit and second is passed through between each sensor assembly and integrated treatment module Bluetooth unit realizes data transfer.5 sensor assemblies gather various navigation informations and send integrated treatment module to, General Office Reason module is merged the various navigation informations for receiving, and calculates navigation results, and navigation results are included in display unit On, and it is uploaded to remote monitoring center.
In the present embodiment, the remote monitoring center has prestored the cartographic information of navigation area.
In the present embodiment, the integrated treatment module also includes the temperature sensor being connected with the second microcontroller, root Temperature-compensating is carried out to other sensors according to temperature signal, so as to improve sensor accuracy.
In the present embodiment, Inertial Measurement Unit adopts MPU-6050 chips, Magnetic Sensor to adopt HMC-5883 chips, gas Pressure sensor adopts BMP-180 chips, first, second microcontroller to adopt STM32 chips.
The invention allows for the air navigation aid based on above-mentioned Wearable pedestrian autonomous navigation system, as shown in figure 3, including Following steps:
(1) using the horizontal attitude angle of the Inertial Measurement Unit initialization system in sensor assembly, inertia measurement list Course heading of the unit with reference to Magnetic Sensor initialization system;
(2) GNSS signal is obtained by DVB, if the GNSS signal for obtaining is effectively, is carried out according to GNSS signal The positioning of initial position;
(3) if the GNSS signal for obtaining is invalid, radio communication positioning, the channel radio are carried out by wireless communication unit Letter positioning includes off-line training step and tuning on-line stage;Off-line training step, gathers the nothing of each sampled point of navigation area Line positions reference information, constructs fingerprint database, and fingerprint database upload remote monitoring center is preserved;Tuning on-line rank Section, goes to be inquired about by the wireless messages of actual acquisition to fingerprint database, immediate reference information is searched out, so as to enter The positioning of line home position;When navigation area is indoor, WiFi signal is selected to carry out radio communication positioning, when navigation area is When outdoor, cellular base station signal is selected to carry out radio communication positioning;
(4) if wireless communication unit cannot obtain effective or sufficient wireless messages, in starting integrated treatment module Vision sensor, carries out image acquisition, and the information data for collecting is uploaded to into remote monitoring center by integrated treatment module, Remote monitoring center has pre-build the information database of navigation area, the information data that vision sensor is collected and information The information data that data base pre-saves is matched, so as to enter the positioning of line home position;
(5) pedestrian in the process of walking, the method for zero-velocity curve is combined to 2 sensors located at biped by pure strapdown The information of module collection is modified:
The width for arranging sliding window is N, is defined as follows variable:
Wherein, ωx、ωy、ωzThe extreme difference of three-axis gyroscope output respectively in the range of sliding window, max represents very big Value, min represents minimum, and A is the maximum amplitude of three axis accelerometer output vector in the range of sliding window, i=0,1,2 ..., N;
Work as ωx、ωy、ωz, in A at least 1 variable value in default threshold range, then it is assumed that be currently located at The Inertial Measurement Unit of foot is in zero-speed state, carries out zero-velocity curve;
(6) according to the information of 5 sensor assembly collections, the relative position and attitude of human limb and head are judged, from And judge the behavioral pattern (run, walk, jumping, crouching) of pedestrian;The barometric information of each baroceptor collection is analyzed, be can be derived that each The residing height of baroceptor, the i.e. head of pedestrian, the height relationships between arm, foot, so as to judge some behaviors of pedestrian Mode, for example, lie low, stand, so as to aid in inertial navigation to carry out behavior judgement;
(7) with reference to the result of step (6), navigation calculation, including four steps are carried out using PDR algorithms:Cadence detection, step Long estimation, course determine and position calculation, comprise the following steps that:
1. cadence detection:The change of accelerometer vertical direction is monitored in real time and draws step number, by arranging threshold value, filter out people The static interference brought with slight jitter of body, obtains accurate step number;
2. step-size estimation:Inertial data is gathered by the sensor assembly for being located at biped, real-time resolving goes out zero in walking At the fast moment, according to the length and interval at zero-speed moment step information is tried to achieve;
3. course determines:Gyroscope signal and magnetic sensor signal are gathered according to sensor assembly, with reference to from remote monitoring The navigation area cartographic information that center obtains, obtains the information in advance course;
4. position calculation:According to the result that 2. and 3. step obtains, the location variation for going up a moment relatively is solved, so as to Obtain the particular location at this moment;
(8) using Multi-information acquisition filtering algorithm (such as Kalman filtering algorithm) by inertial navigation information and GNSS information, Radio communication location information, vision localization information are merged, and obtain final navigation results.
In whole navigation procedure, real-time judge GNSS signal whether effectively, and by the position of first time GNSS significant instant The datum mark combined with GNSS information as inertial navigation information is put, the navigation results that afterwards various navigation information fusions are obtained are equal It is the relative position with the datum mark.
System navigator fix result and integrated treatment module are collected the information for collecting, is uploaded to by wireless communication module Remote monitoring center, carry out one/many people positions and Activity recognition, while set up the model of location-based various physical fields, And colony's service strategy of many people is analyzed, realize location-based various navigation value-added services.
Embodiment technological thought only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every according to Technological thought proposed by the present invention, any change done on the basis of technical scheme, each falls within the scope of the present invention.

Claims (8)

1. a kind of Wearable pedestrian autonomous navigation system, it is characterised in that:Including 5 sensor assemblies and 1 integrated treatment mould Block, the sensor assembly and integrated treatment module are arranged on pedestrian, wherein 5 sensor assemblies are separately positioned on pedestrian Head, on both arms and biped, each sensor assembly includes that the first microcontroller and the inertia that is attached thereto respectively are surveyed Amount unit, Magnetic Sensor, baroceptor and the first bluetooth unit, the Inertial Measurement Unit includes three axis accelerometer and three Axle gyroscope, the integrated treatment module includes the second microcontroller and the wireless communication unit, the vision that are attached thereto respectively Sensor, DVB, the second bluetooth unit and display unit, integrated treatment module obtains GNSS letters by DVB Number, integrated treatment module carries out data interaction, each sensor assembly and synthesis by wireless communication unit and remote monitoring center Data transfer is realized by the first bluetooth unit and the second bluetooth unit between processing module;5 sensor assemblies collection Various navigation informations simultaneously send integrated treatment module to, and integrated treatment module is merged the various navigation informations for receiving, Navigation results are calculated, navigation results are shown on the display unit, and be uploaded to remote monitoring center.
2. a kind of Wearable pedestrian autonomous navigation system according to claim 1, it is characterised in that:The integrated treatment module Also include the temperature sensor being connected with the second microcontroller, temperature-compensating is carried out to other sensors according to temperature signal.
3. a kind of Wearable pedestrian autonomous navigation system according to claim 1, it is characterised in that:The sensor assembly is also Including the vision sensor being connected with the first microcontroller.
4. a kind of Wearable pedestrian autonomous navigation system according to claim 1, it is characterised in that:The remote monitoring center The cartographic information of navigation area is prestored.
5. the air navigation aid of Wearable pedestrian's autonomous navigation system is based on, it is characterised in that comprised the following steps:
(1) using the horizontal attitude angle of the Inertial Measurement Unit initialization system in sensor assembly, Inertial Measurement Unit knot Close the course heading of Magnetic Sensor initialization system;
(2) GNSS signal is obtained by DVB, if the GNSS signal for obtaining is effectively, is carried out initially according to GNSS signal The positioning of position;
(3) if the GNSS signal for obtaining is invalid, radio communication positioning is carried out by wireless communication unit, the radio communication is determined Position includes off-line training step and tuning on-line stage;Off-line training step, gathers wireless the determining of each sampled point of navigation area Position reference information, constructs fingerprint database, and fingerprint database upload remote monitoring center is preserved;The tuning on-line stage, Go to be inquired about by the wireless messages of actual acquisition to fingerprint database, search out immediate reference information, so as to carry out The positioning of initial position;
(4) if wireless communication unit cannot obtain effective or sufficient wireless messages, the vision in integrated treatment module is started Sensor, carries out image acquisition, the information data for collecting is uploaded to into remote monitoring center by integrated treatment module, remotely Surveillance center has pre-build the information database of navigation area, the information data that vision sensor is collected and information data The information data that storehouse pre-saves is matched, so as to enter the positioning of line home position;
(5) pedestrian in the process of walking, is believed by pure strapdown with reference to the inertia that the method for zero-velocity curve is gathered to sensor assembly Breath is modified:
The width for arranging sliding window is N, is defined as follows variable:
ω x = | ω x max - ω x min |
ω y = | ω y max - ω y min |
ω z = | ω z max - ω z min |
A = m a x i = 0 N ( a x i 2 + a y i 2 + a z i 2 )
Wherein, ωx、ωy、ωzThe extreme difference of three-axis gyroscope output respectively in the range of sliding window, max represents maximum, Min represents minimum, and A is the maximum amplitude of three axis accelerometer output vector in the range of sliding window, i=0,1,2 ..., N;
Work as ωx、ωy、ωz, in A at least 1 variable value in default threshold range, then it is assumed that current sensor mould Inertial Measurement Unit in block is in zero-speed state, carries out zero-velocity curve;
(6) according to the information of 5 sensor assembly collections, the relative position and attitude of human limb and head are judged, so as to sentence The behavioral pattern of line-break people;
(7) with reference to the result of step (6), navigation calculation, including four steps are carried out using PDR algorithms:Cadence detection, step-length are estimated Meter, course determine and position calculation, comprise the following steps that:
1. cadence detection:The change of accelerometer vertical direction is monitored in real time and draws step number, by arranging threshold value, filter out human body quiet The interference for only bringing with slight jitter, obtains accurate step number;
2. step-size estimation:Inertial data is gathered by the sensor assembly for being located at biped, during the zero-speed that real-time resolving goes out in walking Carve, according to the length and interval at zero-speed moment step information is tried to achieve;
3. course determines:Gyroscope signal and magnetic sensor signal are gathered according to sensor assembly, with reference to from remote monitoring center The navigation area cartographic information of acquisition, obtains the information in advance course;
4. position calculation:According to the result that 2. and 3. step obtains, the location variation for going up a moment relatively is solved, so as to obtain The particular location at this moment;
(8) it is using Multi-information acquisition filtering algorithm that inertial navigation information is fixed with GNSS information, radio communication location information, vision Position information is merged, and obtains final navigation results.
6. air navigation aid according to claim 5, it is characterised in that:In step (3), when navigation area is indoor, choosing Selecting WiFi signal carries out radio communication positioning;When navigation area is outdoor, selects cellular base station signal to carry out radio communication and determine Position.
7. air navigation aid according to claim 5, it is characterised in that:In step (8), the Multi-information acquisition filtering algorithm For Kalman filtering algorithm.
8. air navigation aid according to claim 5, it is characterised in that:In whole navigation procedure, real-time judge GNSS signal It is whether effective, and the datum mark that the position of first time GNSS significant instant is combined as inertial navigation information with GNSS information, The navigation results that afterwards various navigation information fusions are obtained are the relative positions with the datum mark.
CN201611121949.2A 2016-12-08 2016-12-08 Wearable autonomous navigation system for pedestrian and navigation method thereof Pending CN106595653A (en)

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CN110321902A (en) * 2019-05-09 2019-10-11 哈尔滨工业大学 A kind of indoor automatic vision fingerprint collecting method based on SOCP
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