Vehicle positioning identification card and method for positioning personnel in underground coal mine vehicle

Abstract

The invention discloses a vehicle positioning identification card and a method for positioning personnel in an underground coal mine vehicle, and relates to the technical field of positioning. According to the vehicle positioning identification card provided by the invention, distance measurement is carried out through the first distance measurement unit arranged in the vehicle and the personnel positioning identification card in the vehicle, and distance measurement communication is carried out through the second distance measurement unit arranged outside the vehicle and the positioning base station on the roadway wall; the first distance measuring unit and the second distance measuring unit are connected in series through the micro-control unit for communication, so that the influence of vehicle signal shielding on communication positioning is avoided, accurate real-time positioning of personnel in a vehicle is realized, and safety management of mine personnel is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the positioning field, in particular to a vehicle positioning identification card and a coal mine underground vehicle personnel positioning method. BACKGROUND

[0002] At present, the coal mine underground personnel accurate positioning system is a necessary safety supervision system for production mines. However, when the coal mine underground operating personnel ride vehicles to the operating area, the influence of the external signal shielding of the explosion-proof vehicle causes problems such as wireless packet loss and ranging failure of the personnel carrying positioning cards. During the movement of the personnel in the vehicle, there is a lack of real-time trajectory, the positioning is discontinuous, and problems such as card flying and point jumping occur, which affects the overall performance and actual use effect of the system and brings hidden dangers to the safety management of the mine personnel. SUMMARY

[0003] Therefore, it is necessary to provide a vehicle positioning identification card and a coal mine underground vehicle personnel positioning method aiming at the above technical problems.

[0004] The present application adopts the following technical solutions: The present application provides a vehicle positioning identification card, comprising: a micro control unit, a first ranging unit and a second ranging unit; the first ranging unit is arranged in the vehicle, and the second ranging unit is arranged outside the vehicle. The first ranging unit is used for ranging with each vehicle personnel positioning identification card in the coal mine, obtaining distance information corresponding to each vehicle personnel positioning identification card and sending the distance information to the micro control unit. The second ranging unit is used for ranging with a positioning base station on the roadway wall in the coal mine, and sending the distance information corresponding to each vehicle personnel positioning identification card forwarded by the micro control unit to the positioning base station, so that the positioning base station performs real-time positioning calculation.

[0005] Optionally, the micro control unit processes the first ranging unit and the second ranging unit in time division.

[0006] Optionally, the first ranging unit and the second ranging unit are both positioning communication units using ultra-wideband pulse sequence technology.

[0007] Optionally, the distance information corresponding to each vehicle personnel positioning identification card comprises ID information, distance information and signal strength information of each vehicle personnel positioning identification card.

[0008] Optionally, the micro control unit is used for obtaining the distance information corresponding to each vehicle personnel positioning identification card and performing data analysis, and after removing the interference card information through data filtering, re-encapsulating the remaining data and forwarding them to the second ranging unit.

[0009] Optionally, the positioning base station sends the distance information corresponding to each in-vehicle personnel positioning identification card received and the ranging result obtained by the second ranging unit to the positioning engine, so that the positioning engine performs positioning calculation.

[0010] The application provides a coal mine in-vehicle personnel positioning method, which comprises the following steps: The vehicle positioning identification card obtains a positioning request of the coal mine in-vehicle personnel positioning identification card. The vehicle positioning identification card and the in-vehicle personnel positioning identification card perform ranging, and distance information corresponding to the in-vehicle personnel positioning identification card is obtained. The vehicle positioning identification card and the positioning base station on the coal mine roadway wall perform ranging, and the distance information corresponding to the in-vehicle personnel positioning identification card is sent to the positioning base station, so that the positioning base station performs real-time positioning calculation.

[0011] The above-mentioned at least one technical scheme adopted by the application can achieve the following beneficial effects: In the vehicle positioning identification card, the first ranging unit arranged in the vehicle performs ranging with the in-vehicle personnel positioning identification card, the second ranging unit arranged outside the vehicle performs ranging communication with the positioning base station on the roadway wall, and the micro control unit is connected between the first ranging unit and the second ranging unit for communication, so that the influence of vehicle signal shielding on communication positioning is avoided, accurate and real-time positioning of in-vehicle personnel is realized, and mine personnel safety management is facilitated. DETAILED DESCRIPTION

[0012] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0013] Figure 1 A vehicle positioning identification card schematic diagram is provided for the application; Figure 2 A vehicle positioning identification card specific schematic diagram is provided for the application; Figure 3 A networking schematic diagram is provided for the application; Figure 4 A coal mine in-vehicle personnel positioning method flowchart schematic diagram is provided for the application; Figure 5 A data processing specific logic schematic diagram is provided for the application. DETAILED DESCRIPTION

[0014] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below in combination with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0015] At present, when the personnel in a coal mine work underground ride a vehicle to a work area, the personnel carrying a positioning card is affected by the shielding of external signals of the explosion-proof vehicle, resulting in problems such as wireless packet loss and ranging failure. In view of this problem, the present application designs a vehicle positioning identification card to realize personnel positioning in the explosion-proof vehicle underground, track the position of the personnel in the vehicle while realizing accurate positioning of the vehicle movement; the personnel can be positioned in real time under the condition of signal shielding in the vehicle, solving the problem of personnel positioning underground in a specific environment.

[0016] The present application aims to develop a coal mine underground vehicle accurate positioning identification card, which has a double-channel ranging function; one channel is placed in the vehicle and communicates with the personnel positioning identification card in the vehicle to realize ID number binding; the other channel is placed outside the vehicle and communicates with the ranging of the positioning base station on the roadway wall. After the vehicle positioning identification card obtains the ID information of the personnel positioning identification card in the vehicle, it is packaged into a data packet and sent to the positioning base station based on the UWB communication channel; after the base station receives the information, the distance and ID card information are sent to the host computer solving software, and the solving software solves the data packet and synchronously attaches the measurement value of the vehicle positioning card to the personnel in the vehicle, thereby realizing real-time positioning of the personnel in the vehicle.

[0017] The coal mine underground vehicle accurate positioning identification card mainly includes the following contents: 1. Double-channel vehicle identification card, solving the problem of UWB signal shielding of the coal mine explosion-proof vehicle, causing ranging packet loss; 2. Single MCU processor, time-sharing processing two ranging channels, supporting base station mode and tag mode switching, which can range with the personnel positioning identification card in the vehicle in base station mode and range with the positioning base station on the roadway wall in tag mode; 3. UWB positioning and ranging integrated design, sending data air packet information when positioning; realizing wireless communication application without additional communication mode.

[0018] The technical solutions provided by the embodiments of the present application will be described in detail below in combination with the drawings.

[0019] Figure 1 The schematic diagram of the vehicle positioning identification card in the present application is shown in Figure 1The vehicle positioning identification card comprises a micro control unit, a first ranging unit and a second ranging unit.

[0020] The first ranging unit is used for ranging with the personnel positioning identification cards in each vehicle in the coal mine, obtaining distance information corresponding to the personnel positioning identification cards in each vehicle and sending the distance information to the micro control unit.

[0021] The second ranging unit is used for ranging with the positioning base station on the roadway wall in the coal mine, and sending the distance information corresponding to the personnel positioning identification cards in each vehicle, which is forwarded by the micro control unit, to the positioning base station, so that the positioning base station performs real-time positioning calculation.

[0022] In addition, in one or more embodiments of the present application, the micro control unit can also be used to obtain the distance information corresponding to the personnel positioning identification cards in each vehicle and perform data analysis, and after filtering out the interference card information through data filtering, re-encapsulate the remaining data and forward them to the second ranging unit.

[0023] Specifically, the vehicle positioning identification card in the coal mine is a vehicle positioning device designed based on the principle of UWB positioning technology, mainly used for tracking the position of the vehicle in the coal mine, and realizing real-time positioning of the personnel in the vehicle and the vehicle. Figure 2 As shown in the figure, it can further comprise an interface unit and a power unit. Figure 2 As can be seen, it can further comprise an interface unit and a power unit.

[0024] The MCU micro control unit can adopt an STM32 series M4 processor as the core, and be designed by selecting a TCXO clock and external data buffer FLASH. In one or more embodiments of the present application, the micro control unit can process the first ranging unit and the second ranging unit in time.

[0025] In addition, in one or more embodiments of the present application, the first ranging unit and the second ranging unit can both be positioning communication units using ultra-wideband pulse sequence technology. UWB-1 ranging unit (i.e. the first ranging unit): can be designed based on DW1000, communicates with the MCU through the SPI interface; realizes the in-vehicle personnel positioning identification card into the stack and ID information collection, and sends the relevant data to the MCU.

[0026] UWB-2 ranging unit (i.e. the second ranging unit): can also be designed based on DW1000, communicates with the MCU through the SPI interface; realizes the vehicle identification card and the lane positioning substation ranging communication; at the same time, the in-vehicle identification processed by the MCU is sent.

[0027] Interface unit: can include 485 interface, Ethernet communication interface, serial interface, debugging interface, etc.

[0028] Power supply unit: can adopt DC 9V-36V wide voltage input, respectively voltage conversion DC 3.3V, power supply for two DW1000 channels, MCU, of course, can also use external power supply for energy supply.

[0029] For the network of the vehicle positioning identification card and the data processing flow, the data processing flow can be divided into data acquisition, data analysis, data filtering, data packaging, data sending processes, as shown in Figure 3 , Figure 3 is a network diagram in the present application.

[0030] According to the connection relationship shown in Figure 3 , based on the time division principle, the data processing flow of each ranging period is divided into data acquisition, data analysis, data filtering, data packaging, data sending processes, which are cycled, and the single period processing flow is as shown in Figure 4 , Figure 4 is a coal mine underground vehicle personnel positioning method flow diagram in the present application, which specifically includes the following steps: S101: The vehicle positioning identification card obtains the positioning request of the coal mine underground vehicle personnel positioning identification card.

[0031] The UWB-1 ranging unit and the in-vehicle positioning card perform ranging, obtain the ID information, distance information, signal strength information and other contents of each in-vehicle positioning card after successful ranging, and send the relevant information to the MCU for processing. Based on this, the vehicle positioning identification card can obtain the corresponding ID and distance information through the MCU for data analysis of the distance information corresponding to the in-vehicle personnel positioning identification card, and repackage the remaining data after removing the interference card information according to the filtering principle.

[0032] S102: The vehicle positioning identification card and the in-vehicle personnel positioning identification card perform ranging to obtain the distance information corresponding to the in-vehicle personnel positioning identification card.

[0033] The UWB-2 ranging unit carries out mobile ranging with the base stations along the roadway wall, and transmits the ID number data packet of the in-vehicle personnel positioning identification card during the ranging process; after successful ranging, the base station receives the corresponding ID number data packet.

[0034] S103: The vehicle positioning identification card carries out ranging with the positioning base station on the roadway wall in the coal mine, and transmits the distance information corresponding to the in-vehicle personnel positioning identification card to the positioning base station, so that the positioning base station carries out real-time positioning calculation.

[0035] After receiving the data packet, the base station can transmit the relevant data to the positioning engine through the TCP network, so that the positioning engine carries out data calculation and processing; through the data calculation of the positioning engine, the ID number information, the in-vehicle personnel positioning identification card information in the current ID number data packet are obtained, the positioning distance and direction of the card are assigned to the in-vehicle personnel positioning identification card, and the relevant data are transmitted to the business platform. Figure 5 A specific logic diagram for data processing in the application is shown in the figure, Figure 5 The "vehicle identification card" is the aforementioned vehicle positioning identification card, the "vehicle identification card channel 1" is the aforementioned first ranging unit, and the "vehicle identification card channel 2" is the aforementioned second ranging unit.

[0036] Based on Figure 1 As shown in the vehicle positioning identification card, in the vehicle positioning identification card proposed by the application, the first ranging unit arranged in the vehicle carries out ranging with the in-vehicle personnel positioning identification card, the second ranging unit arranged outside the vehicle carries out ranging communication with the positioning base station on the roadway wall, and the micro control unit is connected between the first ranging unit and the second ranging unit, so as to avoid the influence of vehicle signal shielding on communication positioning, realize accurate and real-time positioning of in-vehicle personnel, and facilitate safe management of mine personnel.

[0037] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiments of the methods. In the embodiments of the present application, any reference to memory, storage, database or other medium can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0038] The technical features of the above embodiments can be combined in any way. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combination of the technical features does not exist, it should be considered as the scope of the present application.

Claims

1. A vehicle location identification card, characterized in that, include: The microcontroller unit includes a first ranging unit and a second ranging unit; the first ranging unit is located inside the vehicle, and the second ranging unit is located outside the vehicle. The first ranging unit is used to measure the distance with the personnel positioning identification cards in each vehicle in the coal mine, obtain the distance information corresponding to each personnel positioning identification card in the vehicle, and send it to the micro control unit; The second ranging unit is used to measure distances with the positioning base station on the wall of the underground roadway in the coal mine, and to send the distance information corresponding to the positioning identification cards of each person in the vehicle forwarded by the microcontroller to the positioning base station, so that the positioning base station can perform real-time positioning calculation.

2. The vehicle positioning identification card as described in claim 1, characterized in that, The microcontroller unit performs time-division processing on the first ranging unit and the second ranging unit.

3. The vehicle location identification card as described in claim 1, characterized in that, Both the first ranging unit and the second ranging unit are positioning and communication units that use ultra-wideband pulse sequence technology.

4. The vehicle location identification card as described in claim 1, characterized in that, The distance information corresponding to each in-vehicle occupant positioning tag includes: the ID information, distance information, and signal strength information of each in-vehicle occupant positioning tag.

5. The vehicle location identification card as described in claim 1, characterized in that, The microcontroller unit is used to acquire the distance information corresponding to the positioning identification cards of each person in the vehicle and perform data parsing. After filtering out the information of interfering cards, the remaining data is re-encapsulated and forwarded to the second ranging unit.

6. The vehicle location identification card as described in claim 1, characterized in that, The positioning base station sends the distance information corresponding to each in-vehicle personnel positioning identification card and the distance measurement result obtained by the second ranging unit to the positioning engine, so that the positioning engine can perform positioning calculation.

7. A method for locating personnel inside a vehicle in an underground coal mine, characterized in that, include: The vehicle location tag card receives a location request from the personnel location tag card inside the vehicle in the coal mine. The distance between the vehicle location tag and the occupant location tag is measured to obtain the distance information corresponding to the occupant location tag. The vehicle positioning tag is used to measure the distance between itself and the positioning base station on the wall of the underground roadway in the coal mine, and the distance information corresponding to the positioning tag of the personnel in the vehicle is sent to the positioning base station so that the positioning base station can perform real-time positioning calculation.

8. The method for locating personnel inside a vehicle in an underground coal mine as described in claim 7, characterized in that, The method further includes: The vehicle location identification card analyzes the distance information corresponding to the vehicle occupant location identification card, and after filtering out interfering card information, the remaining data is repackaged.

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