CN111708062A - Open-air survey equipment thing allies oneself with terminal based on big dipper short message module - Google Patents
Open-air survey equipment thing allies oneself with terminal based on big dipper short message module Download PDFInfo
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- G—PHYSICS
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- G01S—RADIO 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining 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
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- G—PHYSICS
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- G01S—RADIO 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
- G01S19/10—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals
- G01S19/12—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals wherein the cooperating elements are telecommunication base stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18517—Transmission equipment in earth stations
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Abstract
The invention provides a Beidou short message module-based field survey equipment internet of things terminal, which takes a Beidou short message device and a master control single chip microcomputer as main bodies, installs the short message device on a piece of survey equipment, sets a survey threshold value and a communication instruction in the survey equipment in advance, transmits the short message through the short message function of a Beidou satellite system, and returns the information achieved by a survey target to a laboratory data center. The terminal consists of a lower terminal and an upper terminal, wherein the lower terminal is arranged on the exploration equipment and is connected with a data port of the exploration equipment, and the upper terminal is positioned in a data center and is connected with an upper computer for data processing; the lower terminal comprises a voltage source, a voltage stabilizing module, a central control circuit module, a Beidou short message radio frequency antenna module and a Beidou clamping groove which are all installed on the circuit board. The internet of things terminal realizes the survey data transmission and remote control of the exploration equipment based on the satellite in a severe environment, and simultaneously realizes the positioning of the exploration equipment, thereby facilitating the recovery of the exploration equipment.
Description
Technical Field
The invention belongs to the field of data transmission and recovery of field survey equipment, and particularly relates to a Beidou short message module-based field survey equipment internet of things terminal.
Background
When surveying the task in the field, some instruments need to be placed in the field environment for a long time to carry out relevant data survey, and the exploration environment is mostly abominable and does not have network conditions, and survey data collected by surveying equipment can not be passed back through the network immediately, so most field data collection equipment need regularly be retrieved by special personnel, carry out unified transmission after taking back to the station networking, put in again and return the detection position. This action wastes a lot of manpower and material resources, and once a certain point data collection error occurs, the personnel should perform the above-mentioned process again to re-measure, which results in a great delay of the experiment progress. In addition, many unexpected burst factors exist in the field survey environment, for example, abnormal data is surveyed, certain important data needs to be fed back immediately, and the data loses the time efficiency thereof due to the fact that the data cannot be acquired immediately; there is also the possibility of the survey instrument being lost outdoors, resulting in the loss of money and important data.
Therefore, there is a need to develop a communication device that can acquire data from the surveying equipment and transmit the data back to the data center in time with low power consumption without depending on the mobile network, and can report the current status of the surveying equipment to avoid equipment loss and data loss.
Disclosure of Invention
The invention aims to provide a field surveying equipment internet of things terminal based on a Beidou short message module aiming at the defects of the prior art, so that the surveying data transmission based on a satellite in a severe environment is realized, the positioning of exploration equipment is realized, and the finding of the surveying equipment is convenient.
In practical applications, the location of the survey equipment should be a general location without specificity, which increases the difficulty for the survey crew to make multiple trips to the location of the survey equipment. In addition, in some cases, the artificial disturbance may adversely affect the survey data, resulting in errors in the final survey result data, and thus multiple artificial trips should be avoided. For example, surveying wildlife, multiple trips of a person may startle wildlife, such that the survey results are affected. Therefore, technical measures are required to confirm whether the required survey information is obtained. In consideration of the particularity of a surveying environment, a general Internet of things means is likely to fail, so that the Beidou short message module-based field surveying equipment Internet of things terminal is provided, and a communication mode based on the Beidou short message module is used, so that the terminal covers a special geographic environment in the largest range, and information transmission is realized.
The device mainly comprises a Beidou short message device and a master control single chip microcomputer, wherein the Beidou short message device and the master control single chip microcomputer are used as main bodies, the short message device is installed on exploration equipment, an exploration threshold value and a communication instruction are set in the exploration equipment in advance, transmission is carried out through the short message function of a Beidou satellite system, and information achieved by an exploration target is returned to a laboratory data center. Meanwhile, the surveying equipment can be remotely controlled to carry out related operation by the surveying personnel in a mode of sending instructions to the equipment, so that the surveying personnel can purposefully recover the equipment, and the resource waste of manually and regularly retrieving the surveying equipment is avoided. The device can also realize that the current longitude and latitude altitude information is returned to the working personnel through the short message system when the working personnel need to recover the equipment, so that the equipment can be conveniently recovered by the working personnel.
The field survey equipment internet of things terminal based on the Beidou short message module consists of a lower terminal and an upper terminal, wherein the lower terminal is installed on the survey equipment and is connected with a data port of the survey equipment, and the upper terminal is positioned in a data center and is connected with an upper computer for data processing; the lower terminal comprises a voltage source, a voltage stabilizing module, a central control circuit module, a Beidou short message radio frequency antenna module and a Beidou card slot (used for placing a Beidou card), wherein the voltage source, the voltage stabilizing module, the central control circuit module, the Beidou short message radio frequency antenna module and the Beidou card slot are all arranged on the circuit board; the voltage output end of the voltage source is communicated with the voltage input end of the voltage stabilizing module, the voltage output end of the voltage stabilizing module is respectively communicated with the central control circuit module and the Beidou short message module to supply power, and a plurality of ports are arranged on the Beidou short message module and are respectively communicated with the central control circuit module, the Beidou clamping groove and the Beidou short message radio frequency antenna module; the central control circuit module is provided with a port which is connected with exploration equipment for information interaction; the upper terminal structure is the same as the lower terminal structure, and the central control circuit module is connected with an upper computer for information interaction; and the upper terminal and the lower terminal carry out information intercommunication through the Beidou short message module and the Beidou satellite.
The data center is a data acquisition and control center, and by means of the internet of things terminal, researchers can know the real-time situation of the exploration equipment in the data center and can remotely control the exploration equipment through related instructions without carrying out field investigation for many times.
The upper terminal and the lower terminal have the same structure. The difference lies in that the port of the upper terminal performs information interaction with the upper computer, the upper computer can select all data processing equipment such as a computer, and the port of the lower terminal performs information interaction with the exploration equipment, so that the following description about modules and structures is provided for the upper terminal and the lower terminal at the same time if no special indication is given.
The Beidou short message radio frequency antenna module is connected with the Beidou short message module through a port of the Beidou short message radio frequency antenna module and is mainly used for realizing two-way communication with a Beidou satellite and receiving information sent by the Beidou satellite, the upper terminal sends command information to the Beidou satellite, the lower terminal sends data and position information to the Beidou satellite, and the upper terminal and the lower terminal are connected on signals through matched Beidou card numbers to realize information intercommunication. The Beidou short message module is connected with the central control circuit module through a port of the Beidou short message module and is connected with the Beidou short message radio frequency antenna module, and information transmission and conversion between the antenna module and the central control circuit are achieved. The Beidou short message module decodes a command instruction from an upper terminal (namely from an upper computer) received by the Beidou short message radio frequency antenna module and then presents the command instruction to the central control circuit module, and a series of control operations on the exploration equipment are further realized through the central control circuit module; and meanwhile, the information from the central control circuit module is received and is transmitted to the radio frequency antenna module for information sending operation after being integrated. The Beidou short message module supplies power to the Beidou short message radio frequency antenna module and the Beidou card slot at the same time.
The Beidou card slot is used for inserting the Beidou card, and the Beidou card is matched with a Beidou system (comprising a Beidou short message module and a Beidou short message radio frequency antenna module) for use so as to realize normal communication.
According to the technical scheme, the central control circuit module is composed of a programmable main control chip, a display screen and an auxiliary circuit. The programmable main control chip is connected with the Beidou short message module through a serial port of the programmable main control chip and sends information to the short message module or receives data returned by the short message module; the programmable main control chip is connected with the display screen through pins, so that power supply and information display of the display screen are determined, and visual presentation of data is further achieved. The auxiliary circuit is a circuit carried by the central control circuit module and is different according to different types of control circuit modules sold in the market.
According to the technical scheme, the grounding ends of the Beidou short message module and the central control circuit module are grounded.
According to the technical scheme, the circuit board has certain physical strength, and can be used for mounting and supporting each module.
According to the technical scheme, the lower terminal is further fixed on the exploration equipment through screws or adhesion.
According to the technical scheme, the interface for data intercommunication between the lower terminal and the surveying equipment is a USB interface, and is used for connecting an external USB data line with the surveying equipment to realize data transmission between the surveying equipment and the central control circuit module. The interface for data intercommunication between the upper terminal and the upper computer is a USB interface and is used for connecting an external USB data line with the upper computer to realize data transmission between the upper computer and the central control circuit module of the upper terminal.
In the technical scheme of the invention, further, the central control circuit module of the lower terminal sets a threshold value required to be concerned by the survey data through programming so as to judge whether the data with timeliness or other data required to be fed back as soon as possible is acquired. When the judgment is true, the data is immediately sent back to a data center of a researcher through a Beidou short message system to remind the explorators of occurrence of related data; meanwhile, a fixed period can be designed, so that the terminal returns corresponding data periodically, periodic satellite communication of exploration equipment is realized, and the related data is returned to a data center of a worker at certain time intervals.
In the technical scheme of the invention, the upper terminal and the upper computer of the data center are further in data interaction through port link, receive and transmit data sent by the lower terminal to the upper computer, and simultaneously receive and send commands generated by the control software of the upper terminal to the lower terminal.
In the technical scheme of the invention, further, the lower terminal sends information to the upper terminal according to the Beidou card number of the upper terminal; the Beidou card number is unique, and one upper terminal can control a plurality of lower terminals according to different Beidou card numbers.
In the technical scheme of the invention, further, an integrated design principle is adopted for a key chip of the Beidou short message module, and an external radio frequency transceiving link is used as an auxiliary chip; the whole module is compact in design and good in consistency. The module mainly comprises 2 units such as a power management unit, a 5w power amplifier chip, an RDSS transceiver unit and the like. In consideration of the electromagnetic compatibility of the whole module, a shielding frame is adopted for isolation between each unit. The module and peripheral circuit interface mainly comprises a power supply interface, a serial port communication interface, a second pulse interface and a radio frequency interface; the interface is encapsulated by a stamp hole.
In the technical scheme of the invention, the short message antenna module is communicated with two in-orbit satellites, satellite signals can penetrate through the weakening of the atmosphere to reach equipment, and the transmission distance is far longer than the transmission distance between a mobile phone base station and a mobile phone by several kilometers to more than ten kilometers.
As an implementation mode of the technical scheme, the programmable chip of the central control circuit module is programmed, so that the focus threshold value required by the exploration data is adjusted according to the actual corresponding exploration instrument and the exploration environment, different requirements of different exploration equipment are met, a plurality of different functions are customized for the different exploration equipment, and the universality of the invention is greatly expanded. For example, when a researcher is exploring mountain torrent risks, a humidity threshold value and a time threshold value can be set for the lower terminal, when a value returned by the humidity survey probe of the exploration equipment is larger than the humidity threshold value and the duration time is larger than the time threshold value, the central control circuit module judges that the value is true, early warning information is returned to the data center, and the fact that the surveying place has the risk of mountain torrent occurring at a high probability is prompted.
As an embodiment of the above scheme of the present invention, the upper and lower terminals are provided with an interactive device such as a touch screen and a keypad, and can be used as a handheld terminal to perform a simple communication function in an area where signals cannot be covered. For example, no-signal areas of outdoor work such as marine surveying, fishery, field tourism and forest protection personnel can realize timely and simple communication and work reporting, and can also send self position information back to a data center in real time, so that the problem that search and rescue cannot be searched when personnel get lost outdoors is greatly reduced. Or after large-scale natural disasters such as earthquakes and the like, a large number of base stations are destroyed, and simple and timely communication is realized under the condition that mobile phone communication fails. The Beidou short message system has no communication blind area in China, people can send messages to other areas by means of the terminal, real-time disaster relief command and scheduling in the national range are facilitated, emergency communication and disaster information are reported quickly, and search and rescue personnel can master the disaster information as soon as possible, so that the coping capability of China for coping with sudden disasters can be greatly improved.
As an embodiment of the scheme of the invention, the Beidou short message system based on the dual-direction transmission capability can be used for threshold value screening. For example, if the exploration target of the exploration equipment is the sunny humidity of a certain place, then a certain rainy day is obviously an extremely abnormal value for the exploration equipment and is useless data, then an exploration stopping instruction can be sent to the exploration device in the data center, so that useless threshold value reminding can not be received, and the garbage data in the exploration data can also be reduced. The functions can be realized by programming a programmable chip of a central control circuit module of a lower terminal, a threshold range can be preset in the programmable chip, data acquired by exploration equipment can be compared in the central control circuit module, if the threshold is judged to be false, namely the data acquired by exploration is not in the threshold range, the lower terminal can send an abnormal signal to an upper terminal, the upper terminal can send a detection stopping command to a lower terminal after receiving the signal, and the lower terminal can stop exploration operation in a mode of stopping power supply to an exploration equipment sensor and the like.
In the technical scheme of the invention, the Beidou short message module, the Beidou short message radio frequency antenna module, the Beidou card slot, the Beidou card, the voltage source, the voltage stabilizing module and the central control circuit module can be purchased in the market.
Compared with the prior art, the invention has the following beneficial effects:
1. the terminal of the invention can be arranged on almost any survey equipment through the data interface, can still carry out certain communication with the data center under lower power consumption in a communication blind area without signal coverage, realizes the survey data transmission based on the satellite under the severe environment, greatly increases the timeliness of the survey data and the convenience of exploration work,
2. the Beidou short message system is integrated in the terminal, the position of the surveying equipment can be returned in real time by utilizing the positioning function of the Beidou short message system, the recycling of the equipment is convenient to realize, the generation of 'one-time' surveying equipment is avoided, the loss of the equipment is reduced to a certain extent, the cost is saved, and the exploration cost is controlled.
3. The survey internet of things terminal based on the Beidou short message has the advantages of relatively simple structure, convenience in installation and lower cost compared with GPS equipment and the like, and can be used for most of exploration equipment.
Drawings
Fig. 1 is a three-view diagram of a lower terminal (an upper terminal) of a field survey equipment internet of things terminal based on a beidou short message module.
Fig. 2 is a lower (upper) overall circuit structure diagram of the field survey equipment internet of things terminal based on the beidou short message module.
Fig. 3 is a working flow and a schematic diagram of a lower terminal of the field survey equipment internet of things terminal based on the big dipper short message module.
Fig. 4 is an internal composition relationship diagram of the field survey equipment internet of things terminal based on the big dipper short message module.
In the figure, 1-voltage stabilizing module, 2-power supply port, 3-central control circuit module, 4-big dipper draw-in groove, 5-big dipper short message radio frequency antenna module, 6-big dipper short message module, 7-display screen.
Detailed Description
The short message internet of things terminal device based on the beidou short message function is further described by the following specific embodiment. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and those skilled in the art can make certain insubstantial modifications and adaptations of the present invention based on the above disclosure and still fall within the scope of the present invention.
Example 1
In this embodiment, the upper terminal and the lower terminal of the field survey equipment internet of things terminal based on the big dipper short message module are completely the same in structure and module connection, and the only difference is that the upper terminal and the upper terminal perform data interaction, and the lower terminal performs data interaction with the survey equipment.
The exploration equipment internet-of-things terminal (device) based on the Beidou short message module is composed of a lower terminal and an upper terminal which are identical in structure, wherein the lower terminal is installed on exploration equipment and connected with a data port of the exploration equipment, and the upper terminal is located in a data center and connected with an upper computer for data processing; the lower terminal comprises a voltage source, a voltage stabilizing module 1, a central control circuit module 3, a Beidou short message module 6, a Beidou short message radio frequency antenna module 5 and a Beidou card slot 4 which are all arranged on the circuit board; the voltage output end of the voltage source is communicated with the voltage input end of the voltage stabilizing module, the voltage output end of the voltage stabilizing module is respectively communicated with the central control circuit module and the Beidou short message module to supply power, and a plurality of ports are arranged on the Beidou short message module and are respectively communicated with the central control circuit module, the Beidou clamping groove and the Beidou short message radio frequency antenna module; the central control circuit module is provided with a port which is connected with exploration equipment for information interaction; the structure of the upper terminal is the same as that of the lower terminal, and a port which is connected with an upper computer for information interaction is arranged on the central control circuit module. And the upper terminal and the lower terminal carry out information intercommunication with the Beidou satellite through the Beidou short message module. The grounding ends of the Beidou short message module and the central control circuit module are grounded.
The central control circuit module consists of a programmable main control chip, a display screen 7 and an auxiliary circuit; the programmable main control chip is connected with the Beidou short message module through a serial port of the programmable main control chip and sends information to the short message module or receives data returned by the short message module; the programmable chip performs data interaction with the Beidou short message module through a serial port of the programmable chip; the programmable main control chip is connected with the display screen through pins.
The circuit board has certain physical strength and can realize the installation and support of each module. The lower terminal is fixed on the exploration equipment in a screw or sticking mode. The interface for data intercommunication between the lower terminal and the surveying equipment is a USB interface and is used for connecting an external USB data line with the surveying equipment; the interface for data intercommunication between the upper terminal and the upper computer is a USB interface and is used for connecting an external USB data line with the upper computer to realize data transmission between the upper computer and the central control circuit module of the upper terminal. And the lower terminal sends the Beidou card number of the upper terminal to the upper terminal.
The voltage source supplies power for a 7.4V lithium battery. The voltage stabilizing module is a three-terminal voltage stabilizing integrated circuit, namely LM 7805. The circuit board is a glass fiber epoxy board, the thickness of the circuit board is 1.5mm, the pitch of holes is 2.54mm, and the aperture is 1.5 mm. The central control circuit module adopts an stm32 chip, the compiling environment of the main control chip is Keil5, the programming language is C, and meanwhile, the program burning process from the computer upper computer to the main control chip is realized through the stc burning software. The short heat preservation module is BD _ DEVELOPER _ N2_ V11.
The circuit structure is shown in fig. 2, it should be specially noted that the ports shown in the figure are only the ports required by the present embodiment, and the ports that are not used are not shown in the figure for the sake of simplicity.
In the figure, a 7.4V voltage source is an output port 2 of the voltage stabilizing module, and a 5V voltage source is an output port 1 of the voltage stabilizing module. The specific wiring mode is as follows:
the STM32 VCC port is electrically connected with a 7.4V voltage source (actually, the voltage stabilizing module output port 2), and the GND port is grounded.
The STM32 TX port is electrically connected with the short message module BD _ RX port.
The STM32 RX port is electrically connected with the short message module BD _ TX port.
The short message module (SMS) VCC, VCC _ PA1, VCC _ PA2, VCC _ PA3 ports are electrically connected to a 5V voltage source (actually, a voltage stabilizing module output port 1), and the short message module GND port is grounded.
The short message module IC _ SRSTIN port is electrically connected with a Beidou CARD slot (BD CARD) BDCARD _ RST port.
And the short message module IC _ VCC port is electrically connected with the Beidou card slot VCC port.
And the short message module IC _ SD port is electrically connected with the DIO port of the Beidou card slot.
And the port of the short message module IC _ SCLK is electrically connected with the CLK port of the Beidou card slot.
The port of the short message module BD _ TX _ RF1 is electrically connected with the port of a Beidou short message radio frequency antenna module (antenna) PIN _ 3.
And the port of the short message module RD _ RX _ RF1 is electrically connected with the port of the Beidou short message radio frequency antenna module PIN _ S.
The operation flow chart is shown in fig. 4, the upper computer can convert the upper computer interface visualization operation into a character string instruction through upper computer software and transmit the character string instruction to the upper computer terminal through an interface, the upper computer terminal can send the instruction to the lower terminal through the Beidou satellite, and the lower terminal can perform the relevant operation of the instruction on the exploration equipment through a port after receiving the instruction, such as starting/suspending exploration and the like; similarly, the exploration equipment can transmit data to the lower terminal through the port, the lower terminal compares the received data with the threshold value, if the data is judged to be true, data information can be sent to the upper terminal through the Beidou satellite, the upper terminal can transmit the information to the upper computer through the port after receiving the data, and the transmitted information is further converted into a visual language through the upper computer software and displayed on a display screen of the upper computer.
In the lower terminal of the exploration equipment internet of things terminal based on the Beidou short message function, for convenience of description of subsequent work flows, the lower terminal can be divided into five states according to different running operations, namely an initial test state, a waiting state, a decoding state, a conversion state and a basic information acquisition state. A simplified flow and schematic diagram of this implementation is shown in fig. 3.
After the equipment is powered on, the equipment enters an initial test state, in the state, a related port is initialized firstly, a Beidou card number for receiving short message information is set, a timer is started to interrupt, a short message module is started, an invalid short message is sent, and the equipment is verified to be normal. If all the operations are successful, a signal of successful initialization is sent, a data receiving/sending area is emptied, the upper terminal equipment is informed that the upper terminal equipment can be normally used at the moment, and a waiting mode is entered. If the port initialization fails, the device will reinitialize the port every 10ms until the port initialization succeeds, if the data transmission fails, the device will reinitialize the data transmission test every 10ms until the data transmission succeeds,
after the device enters the waiting mode, a timer is started. Meanwhile, the equipment continuously performs operations of scanning whether the monitoring value of the exploration equipment exceeds a threshold value and detecting whether command data sent by an upper terminal is received, and during the period, the timer is in a timing state all the time.
And when the time for entering the waiting mode is equal to the timing reporting time interval initially set by the equipment, the equipment enters a basic information acquisition state. At this time, the device collects the basic information of the initial setting, such as longitude and latitude, and stores the collected data in the data sending area to wait for sending. After the basic information mode is entered for 10ms, the equipment detects whether the data transmission area has data or not, if the data exists, the data is transmitted, the data transmission area is emptied, if the data does not exist, basic data acquisition operation is repeated again, the detection is carried out again after 10ms until the data exists in the data transmission area, and then the equipment transmits the data and the data transmission area is emptied. And when the data is successfully sent and the operation of clearing the data sending area is completed, the timer is reset and starts to count time again, and the equipment enters the waiting mode again. If the data transmission is unsuccessful, the data transmission is repeated at intervals of 10ms until the data transmission is successful.
In the waiting mode, if the equipment scans that the monitoring value of the exploration equipment is greater than the preset threshold value, the equipment waits for 10ms and carries out secondary monitoring, and if the obtained result is still greater than the preset threshold value, the equipment enters a conversion mode.
After entering the conversion mode, the equipment extracts relevant data from the exploration device, stores the collected data in a data sending area and waits for sending. After the conversion mode is entered for 10ms, the device detects whether the data transmission area has data, if so, the device transmits the data and empties the data transmission area, if not, the conversion operation is repeated again, and after 10ms, the device performs detection again until the data transmission area has data, and then the device transmits the data and empties the data transmission area. And when the data transmission is successful and the operation of clearing the data transmission area is completed, the equipment enters the waiting mode again. If the data transmission is unsuccessful, the data transmission is repeated at intervals of 10ms until the data transmission is successful.
In the waiting mode, if command data of the upper terminal is received, the received data is stored in the data receiving area, a receiving success signal is sent to the upper terminal, and if the signal is sent successfully, a channel for receiving the data is closed, and the decoding state is entered. If the signal transmission is unsuccessful, the transmission is repeated at an interval of 10ms until the transmission is successful.
After entering the decoding mode, the device decodes the received data, and if the received data is a valid command, executes a relevant program, such as reporting the current coordinates, immediately reporting the current data, changing the threshold value, and the like. If the command is an invalid command, clearing the data receiving area, opening a channel for receiving data, and returning the equipment to the waiting state again. And after the effective instruction operation is completed, the same equipment clears the data receiving area, opens a channel for receiving data and enters a waiting state again.
The waiting time of 10ms is only a specific setting of the present embodiment, and the actual value also needs to be set by the user according to the actual environment and the actual operation time.
It should be noted that, in actual use, the device may also automatically generate a check code at the end of the transmitted data when transmitting data, and after receiving the data, the upper terminal analyzes the check code to determine whether the data is lost, and if the data is lost, the upper terminal may send a repeatedly transmitted command to the device, and the device may re-acquire and transmit the data after receiving the command, until the check code analyzed by the upper terminal is correct, which further increases the reliability of the data.
Meanwhile, in practical application, the command code of the upper terminal should be repeatedly transmitted at intervals until a signal that the device successfully receives is received. Because a device may be occupied and unable to accept data, the device may be occupied and unable to accept commands if the commands are sent only once.
The upper computer control software in this example is the software of a 'serial port debugging assistant' which is developed by us. The software adopts a Qt graphical development framework, is compiled by using C + + language, and realizes the conversion and exchange of data by using a bottom-layer windows programming operation serial port. The software can convert the operation on the visual interface into a character string instruction and transmit the character string instruction to the central control circuit module of the upper terminal through the port, and can also receive data transmitted by the central control circuit module of the upper terminal through the port and display the converted data on the interface. All serial port debugging software in the existing market can realize the functions, but the actual operation mode can be different, but the difference is not considered to be substantial and is also included in the scope of the invention.
It should be noted that the sending of the character string command converted by the operation on the control software visual interface is not unique, as long as the upper terminal and the lower terminal have the unified command data table, the lower terminal receives the command sent by the upper terminal and compares the command with the command data table, and the required command can be executed when the command is judged to be true, but this should not be considered as a substantial difference from the present invention, and should also be included in the scope of the present application.
When the upper terminal sends data to the lower terminal, the upper terminal control software automatically generates a line of character string instructions and sends the line of character string instructions to the upper terminal through the interface only after selecting an input command type, a Beidou card number of the lower terminal and a transmission mode in the upper terminal control software, and the upper terminal is responsible for sending information to the lower terminal through the Beidou satellite.
After the upper terminal receives the data, the upper terminal converts the received information into a character string instruction and transmits the character string instruction to the upper computer through the interface, and an upper computer software program of the data center translates the received data into characters through a preset program and displays the characters on a visual interface.
It should be noted that the present algorithm and logic are not the only solution for realizing the functions, and the judgment of whether the logic is the operation related to the true execution or the false execution is also related to the programming method, and any algorithm similar to the present solution or similar to the logic should be included in the scope of the present application. In addition, different manufacturers, different types of chips, different programming environments and languages may be different, the programming method may also be different, the habits of the developers on the definition of the ports may also be different from the present embodiment, but the algorithm logic and the implementation method are similar and should be included in the scope of the present application.
In addition, the terminal issues commands to the exploration equipment, and data transmitted to the terminal by the exploration equipment are different due to different types of exploration equipment of different manufacturers and different due to different transmission protocols, and actual codes are written according to the specific exploration equipment.
While the present invention is directed to a satellite-based communication scheme and system that is operable in harsh environments, any code written in any language and structure within the framework of such a system that performs its function should be considered insubstantial differences from the present invention and is intended to be encompassed by the present application.
Claims (10)
1. The field survey equipment internet of things terminal based on the Beidou short message module is characterized by consisting of a lower terminal and an upper terminal which are identical in structure, wherein the lower terminal is installed on the survey equipment and connected with a data port of the survey equipment, and the upper terminal is positioned in a data center and connected with an upper computer for data processing; the lower terminal comprises a voltage source, a voltage stabilizing module (1), a central control circuit module (3), a Beidou short message module (6), a Beidou short message radio frequency antenna (5) and a Beidou card slot (4), wherein the voltage source, the voltage stabilizing module, the central control circuit module, the Beidou short message radio frequency antenna and the Beidou card slot are all mounted on a circuit board; the voltage output end of the voltage source is communicated with the voltage input end of the voltage stabilizing module, the voltage output end of the voltage stabilizing module is respectively communicated with the control circuit module and the Beidou short message module to supply power, and a plurality of ports are arranged on the Beidou short message module and are respectively communicated with the central control circuit module, the Beidou clamping groove and the Beidou short message radio frequency antenna module; the central control circuit module is provided with a port which is connected with exploration equipment for information interaction; the upper terminal structure is the same as the lower terminal structure, and the central control circuit module is connected with an upper computer for information interaction; and the upper terminal and the lower terminal carry out information intercommunication through the Beidou short message module and the Beidou satellite.
2. The Beidou short message module-based field survey equipment Internet of things terminal according to claim 1, wherein the central control circuit module consists of a programmable main control chip, a display screen (7) and an auxiliary circuit; the programmable main control chip is connected with the Beidou short message module through a serial port of the programmable main control chip and sends information to the short message module or receives a command returned by the short message module; the programmable main control chip is electrically connected with the display screen.
3. The Beidou short message module-based field survey equipment Internet of things terminal according to claim 1, wherein the Beidou short message module is grounded with a central control circuit module.
4. The Beidou short message module-based field survey equipment Internet of things terminal according to claim 1, wherein the circuit board has certain physical strength and can mount and support each module.
5. The Beidou short message module-based field survey equipment internet of things terminal according to claim 1, wherein the lower terminal is fixed on the survey equipment through screws or sticking.
6. The Beidou short message module-based field survey equipment internet of things terminal according to claim 1, wherein an interface for data intercommunication between the lower terminal and the survey equipment is a USB interface for connecting an external USB data line with the survey equipment; the interface for data intercommunication between the upper terminal and the upper computer is a USB interface and is used for connecting an external USB data line with the upper computer to realize data transmission between the upper computer and the central control circuit module of the upper terminal.
7. The Beidou short message module-based field survey equipment internet of things terminal according to claim 1, wherein the central control circuit module of the lower terminal designs a threshold value required to pay attention to survey data through programming so as to judge whether time-efficient data or other data required to be fed back as soon as possible is collected, and when the judgment is true, the central control circuit module immediately sends the data back to a data center of a researcher through a Beidou short message system so as to remind the researcher of occurrence of related data; meanwhile, a fixed period is designed, so that the terminal returns corresponding data periodically, periodic satellite communication of exploration equipment is realized, and the related data is returned to a data center of a worker at certain time intervals.
8. The Beidou short message module-based field survey equipment Internet of things terminal according to claim 1, wherein the upper terminal is connected with an upper computer of a data center through a port for data interaction, receives data sent by a lower terminal and transmits the data to the upper computer, and receives commands generated by the upper computer and sends the commands to the lower terminal.
9. The Beidou short message module-based field survey equipment internet of things terminal according to claim 1, wherein the lower terminal sends information to the upper terminal according to the Beidou card number of the upper terminal; and one upper terminal is provided with a plurality of lower terminals in a matching way according to different Beidou card numbers, so that the control of the plurality of lower terminals is realized.
10. The Beidou short message module based field survey equipment Internet of things terminal according to any one of claims 1-9, characterized in that a programmable chip of the central control circuit module is programmed, so that a focus threshold value required by survey data is adjusted according to actual corresponding survey instruments and survey environments, different requirements of different survey equipment in different survey environments are met, and multiple different functions are customized for different survey equipment according to different survey environments and requirements.
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