General vehicle running state monitoring device and system

Abstract

The utility model discloses a general vehicle operation state monitoring device and system, and relates to the vehicle monitoring field, the device comprises a Beidou positioning and attitude determination module used for collecting vehicle positioning and attitude determination signals through connecting a first Beidou antenna arranged at the front part of a general vehicle and a second Beidou antenna arranged at the rear part of the general vehicle; the signal conditioning module is connected with a sensing device arranged on the general vehicle to access a vehicle running state signal collected by the sensing device in real time; the data acquisition module is connected with the signal conditioning module to obtain a vehicle running state signal, and is connected with the Beidou positioning and attitude determination module to obtain a vehicle positioning and attitude determination signal; and the real-time display module is connected with the data acquisition module to display the vehicle running state signal and the vehicle positioning and attitude determination signal in real time. The system can improve the monitoring accuracy of the general vehicle, and improves the informatization degree and informatization management capability of the general vehicle.

Description

Technical Field

[0001] The utility model relates to the field of vehicle monitoring, in particular to a general vehicle running state monitoring device and system. Background Art

[0002] At present, the resumes of general vehicle equipment, such as armored vehicles, are mainly recorded by handwriting, and the information that can be recorded is limited. There is a low degree of informatization, making it difficult to accurately monitor the vehicle's operating status. Utility Model Content

[0003] The utility model provides a general vehicle running state monitoring device and system to realize the follow-up monitoring of the general vehicle running state.

[0004] The utility model provides a general vehicle running state monitoring device, the device comprises: a Beidou positioning and attitude module, which collects vehicle positioning and attitude signals for monitoring the latitude and longitude, attitude, driving speed and mileage of the vehicle by connecting to a first Beidou antenna arranged at the front of the general vehicle and a second Beidou antenna arranged at the rear of the general vehicle; a signal conditioning module, which accesses the vehicle running state signal collected by the sensor equipment of the general vehicle in real time by connecting to the sensor equipment arranged on the general vehicle; a data acquisition module, which obtains the vehicle running state signal from the signal conditioning module by connecting to the signal conditioning module, and obtains the vehicle positioning and attitude signal from the Beidou positioning and attitude module by connecting to the Beidou positioning and attitude module; a real-time display module, which displays the vehicle running state signal and the vehicle positioning and attitude signal obtained by the data acquisition module in real time by connecting to the data acquisition module; In the embodiment, the data acquisition module includes: a random access memory for temporarily storing a vehicle running status signal and a vehicle positioning and attitude signal; an analog-to-digital conversion circuit, which performs analog-to-digital conversion on the vehicle running status signal conditioned by the signal conditioning module by connecting to the signal conditioning module; a programmable gate array circuit, which provides a generated sampling clock to the analog-to-digital conversion circuit by connecting to the analog-to-digital conversion circuit, obtains the vehicle running status signal after analog-to-digital conversion by the analog-to-digital conversion circuit, and obtains the vehicle positioning and attitude signal collected by the Beidou positioning and attitude module by connecting to the Beidou positioning and attitude module; an ARM processor, which controls the programmable gate array circuit to generate a sampling clock by connecting to the programmable gate array circuit, and saves the vehicle running status signal after analog-to-digital conversion and the vehicle positioning and attitude signal obtained by the programmable gate array circuit to the random access memory by connecting to the random access memory.

[0005] Preferably, the vehicle operating status signal includes a vehicle vibration signal collected by a vibration sensor in the sensing device; accordingly, the signal conditioning module includes a vibration conditioning circuit for conditioning the vehicle vibration signal, and the vibration conditioning circuit includes two amplifiers with switchable gains and a low-pass filter with a switchable cutoff frequency connected in sequence.

[0006] Preferably, the vehicle operating status signal includes one or more of a current signal collected by a current sensor in the sensing device, a pressure signal collected by a pressure sensor in the sensing device, a speed signal collected by a speed sensor in the sensing device, a gear signal collected by a gear sensor in the sensing device, and a fuel flow signal collected by a flow sensor in the sensing device; accordingly, the signal conditioning module includes one or more of a current conditioning circuit, a pressure conditioning circuit, a speed conditioning circuit, a gear conditioning circuit, and a flow conditioning circuit, and each of the current conditioning circuit, the pressure conditioning circuit, the speed conditioning circuit, the gear conditioning circuit, and the flow conditioning circuit includes an amplifier with a gain of 1 and a low-pass filter with a fixed cutoff frequency connected in sequence.

[0007] Preferably, the vehicle operating status signal includes a temperature signal collected by a temperature sensor in the sensing device; accordingly, the signal conditioning module includes a temperature conditioning circuit, and the temperature conditioning circuit includes an instrument amplifier with a gain of 50 times and a low-pass filter with a cutoff frequency of 100kHz connected in sequence.

[0008] Preferably, the data acquisition module further comprises: an Ethernet communication interface circuit, which is connected to the ARM processor so that the ARM processor transmits the vehicle operation status signal and the vehicle positioning and attitude signal in the random access memory to an external control computer.

[0009] Preferably, the Beidou positioning and attitude determination module, the signal conditioning module, the data acquisition module and the real-time display module are all installed in the housing of the device.

[0010] Preferably, the front side of the shell has a display area, and the display area includes a LCD display area, a channel status display area, a bus status display area, and a power working status display area, wherein: the channel status display area includes a vibration channel working indicator light, a pressure channel working indicator light, a gear channel working indicator light, a speed channel working indicator light, a temperature channel working indicator light, a flow channel working indicator light, and a current channel working indicator light; the bus status display area includes: a Beidou signal status indicator light and a vehicle-mounted bus status indicator light; the power status display area includes: a working status light, a power status light, and a battery indicator light.

[0011] Preferably, one side surface of the housing has a button area, and the button area includes a system power button and a stop sampling button.

[0012] Preferably, the shell also has a physical interface area, which includes a first Beidou antenna interface and a second Beidou antenna interface arranged on one side of the shell, as well as a vibration signal input interface and pressure, gear, speed, temperature, flow, current input interfaces, a communication interface, and a power supply interface arranged on the other side of the shell.

[0013] An embodiment of the utility model also provides a general vehicle operation status monitoring system, which includes: a sensor device arranged on the general vehicle, a first Beidou antenna arranged at the front of the general vehicle and a second Beidou antenna arranged at the rear of the general vehicle, and the above-mentioned general vehicle operation status monitoring device.

[0014] The utility model provides a general vehicle operation status monitoring device and system, which can improve the monitoring accuracy of general vehicles, improve the informationization level of general vehicles and informationization management capabilities by automatically, real-time and comprehensively collecting vehicle operation status signals and vehicle positioning and posture signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a universal vehicle running status monitoring device provided by the utility model;

[0016] Figure 2 This is a schematic diagram of the principle of the vibration conditioning circuit provided by the utility model;

[0017] Figure 3 yes Figure 2 Circuit diagram of constant current source;

[0018] Figure 4 It is a schematic diagram of the principle of the current / pressure / speed / gear / flow conditioning circuit provided by the utility model;

[0019] Figure 5 This is a schematic diagram of the temperature conditioning circuit provided by the utility model;

[0020] Figure 6 It is a structural schematic diagram of the data acquisition module provided by the utility model;

[0021] Figure 7 It is a simplified diagram of the control principle of the ARM processor provided by the utility model;

[0022] Figure 8 This is a front view of the universal vehicle running status monitoring device provided by the utility model;

[0023] Fig. 9This is the circuit diagram of the gear position sensor provided by the utility model;

[0024] 1-shell; 2-LCD display area; 3-channel status display area (zone I); 31-zone I vibration signal input interface; 4-channel status display area (zone II); 41-zone II signal input interface; 5-bus status display area; 6-power working status display area; 61-power interface; 62-system power button; 7-communication interface; 8-stop sampling button; 91-first Beidou antenna interface; 92-second Beidou antenna interface. DETAILED DESCRIPTION

[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In the subsequent description, the use of suffixes such as "module", "component" or "unit" used to represent elements is only to facilitate the description of the present invention and has no specific meaning in itself. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0026] See also Figure 1 The universal vehicle running status monitoring device of the utility model includes the following modules:

[0027] 1. A Beidou positioning and attitude determination module, which collects vehicle positioning and attitude determination signals for monitoring the vehicle's latitude and longitude, posture, driving speed, and mileage by connecting a first Beidou antenna arranged at the front of the general vehicle and a second Beidou antenna arranged at the rear of the general vehicle.

[0028] The vehicle's longitude and latitude can be used to monitor the vehicle's driving trajectory and realize the electronic fence function.

[0029] The vehicle posture can be used to monitor accident conditions such as siltation and rollover during vehicle driving.

[0030] 2. A signal conditioning module, which is connected to a sensor device installed on the general vehicle and receives the vehicle operation status signal collected by the sensor device of the general vehicle in real time.

[0031] a. The vehicle operation status signal includes a vehicle vibration signal collected by a vibration sensor in the sensing device; accordingly, the signal conditioning module includes a vibration conditioning circuit for conditioning the vehicle vibration signal.

[0032] In practical applications, the vibration sensor can be an acceleration sensor. According to the actual monitoring requirements of the power transmission device, one or more vibration sensors are set on the power transmission device of the vehicle. The number of vibration conditioning circuits increases or decreases with the number of vibration sensors, ensuring that one vibration conditioning circuit only processes the vehicle vibration signal of one channel.

[0033] See also Figure 1 In an embodiment, four vibration sensors are used, and the four vibration sensors are installed at different positions of the power transmission device of the vehicle to collect four vehicle vibration signals representing the vibration conditions of four different positions of the power transmission device when the vehicle is running. At this time, four vibration conditioning circuits are required, and each vibration conditioning circuit includes an amplifier and a low-pass filter connected to the amplifier. Preferably, see Figure 2 Each vibration conditioning circuit includes two amplifiers with switchable gains and low-pass filters with switchable cutoff frequencies connected in sequence. For example, each input vehicle vibration signal is conditioned by two amplifiers with switchable gains of 1:10 and low-pass filters with 100Hz / 1kHz / 10kHz / PASS in sequence before entering the A / D acquisition link. Obviously, the two amplifiers with switchable gains of 1:10 can realize three-level gain switching of 1, 10, and 100 times through program control, and the low-pass filter with switchable cutoff frequencies can realize four-level cutoff frequency switching of 100Hz, 1kHz, 10kHz, and PASS.

[0034] In addition, each vibration conditioning circuit can also include a 4mA constant current source circuit. The constant current source circuit uses a high-precision adjustable current source chip. The output current adjustment range is 1uA-10mA. For the circuit, see Figure 3 .

[0035] In addition, each vibration conditioning circuit may also include a high-pass filter, the input of the high-pass filter is connected to the 4mA constant current source circuit and connected to the vehicle vibration signal, and the output is connected to an amplifier with switchable gain.

[0036] b. The vehicle running status signal includes: one or more of the current signal collected by the current sensor in the sensing device, the pressure signal collected by the pressure sensor in the sensing device, the speed signal collected by the speed sensor in the sensing device, the gear signal collected by the gear sensor in the sensing device, and the fuel flow signal collected by the flow sensor in the sensing device. Correspondingly, the signal conditioning module includes one or more of the current conditioning circuit, the pressure conditioning circuit, the speed conditioning circuit, the gear conditioning circuit, and the flow conditioning circuit.

[0037] According to the actual monitoring requirements of the starting system, current sensors and / or voltage sensors can be installed on the battery terminal side of the vehicle. Figure 1 In the embodiment, one current sensor is used, and one current conditioning circuit is required.

[0038] According to the pipeline pressure test requirements, pressure sensors can be installed in different pipelines of the vehicle. The number of pressure conditioning circuits increases or decreases with the number of pressure sensors, ensuring that one pressure conditioning circuit only processes the pressure signal of one channel. Figure 1In the embodiment, six pressure sensors are used, which are installed in the fuel, engine oil, hydraulic oil, air pipeline, cooling system pipeline, and exhaust air inlet and outlet pipelines respectively, to collect six pressure signals representing the pipeline pressure conditions of each pipeline. At this time, six pressure conditioning circuits are required.

[0039] According to the actual monitoring requirements of the engine speed, one or more speed sensors are set at the engine electronic control unit (ECU). The speed sensor can be a magnetoelectric sensor. The number of speed conditioning circuits increases or decreases with the number of speed sensors, ensuring that one speed conditioning circuit only processes the speed signal of one channel. Figure 1 In the embodiment, two speed sensors are used, and two speed conditioning circuits are required.

[0040] According to the actual monitoring requirements of the driving gear, one or more gear sensors are set at the gear shift device. The gear sensor can be a photoelectric sensor. The number of gear conditioning circuits increases or decreases with the number of gear sensors, ensuring that one gear conditioning circuit only processes the gear signal of one channel. Figure 1 In an embodiment, two gear sensors are used. Taking armored vehicles as an example, one gear sensor is used to collect gear type signals to confirm whether it is a mechanical gear or a hydraulic gear, and the other gear sensor is used to collect the actual gear position to confirm reverse gear / neutral gear / 1st gear / 2nd gear / 3rd gear / 4th gear / 5th gear / 6th gear. At this time, two gear conditioning circuits are required.

[0041] According to the actual monitoring requirements of fuel flow, one or more flow sensors are installed in the pipeline between the engine fuel filter and the injection pump. Figure 1 In the embodiment, one flow sensor is used, and one flow conditioning circuit is required.

[0042] Each of the current conditioning circuit, the pressure conditioning circuit, the speed conditioning circuit, the gear conditioning circuit, and the flow conditioning circuit includes an amplifier and a low-pass filter connected to the amplifier. Figure 4 The amplifier is a 1x gain amplifier, and the low-pass filter is a low-pass filter with a fixed cutoff frequency. Each input signal is conditioned before entering the A / D acquisition link.

[0043] c. The vehicle operation status signal includes: the vehicle operation status signal includes a temperature signal collected by a temperature sensor in the sensing device; accordingly, the signal conditioning module includes a temperature conditioning circuit.

[0044] According to the temperature monitoring requirements, one or more temperature sensors can be installed in the vehicle. The temperature sensor can be a thermocouple or an on-board sensor. The number of temperature conditioning circuits increases or decreases with the number of temperature sensors, ensuring that one temperature conditioning circuit only processes the temperature signal of one channel. Figure 1 In the embodiment, four temperature sensors are used to collect exhaust temperature, engine oil temperature, transmission oil temperature and cooling water temperature respectively to meet the needs of in-cylinder combustion monitoring, lubrication system monitoring, gear box monitoring and cooling system monitoring. At this time, four temperature conditioning circuits are needed.

[0045] Each temperature conditioning circuit includes an amplifier and a low-pass filter connected to the amplifier. Figure 5 The instrument amplifier has a gain of 50 times, the filter channel has a fixed third-order 100kHz cutoff frequency, and each input temperature signal is conditioned before entering the A / D acquisition link.

[0046] 3. A data acquisition module, which obtains the vehicle running status signal from the signal conditioning module by connecting to the signal conditioning module, and obtains the vehicle positioning and attitude signal from the Beidou positioning and attitude module by connecting to the Beidou positioning and attitude module.

[0047] exist Figure 1 In the illustrated embodiment, the vehicle operating status signal includes: vibration signals collected by 4 vibration sensors, current signals collected by 1 current sensor, pressure signals collected by 6 pressure sensors, gear signals collected by 2 gear sensors, speed signals collected by 2 speed sensors, temperature signals collected by 4 temperature sensors, and flow signal collected by 1 flow sensor.

[0048] See also Figure 6 , the data acquisition module may include the following parts:

[0049] (1) an analog-to-digital conversion circuit, which is connected to the signal conditioning module to perform analog-to-digital conversion on the vehicle operating status signal conditioned by the signal conditioning module.

[0050] The analog-to-digital conversion circuit is a 24-bit acquisition circuit. This embodiment uses a 24-bit analog-to-digital conversion chip SGM58600. In the 24-bit acquisition circuit of SGM58600, the analog power supply voltage is 5V, the digital power supply voltage is 3.3V, and the reference voltage is designed to be 2.5V.

[0051] (2) A programmable gate array circuit FPGA, which is connected to the analog-to-digital conversion circuit to provide the generated sampling clock to the analog-to-digital conversion circuit, and obtains the vehicle operation status signal after analog-to-digital conversion by the analog-to-digital conversion circuit, and is connected to the Beidou positioning and attitude module to obtain the vehicle positioning and attitude signal collected by the Beidou positioning and attitude module.

[0052] FPGA is the main controller of the data acquisition module. This embodiment uses PGL22G-6IFBG324. The peripheral circuits of FPGA include power supply circuit, download circuit, download mode configuration circuit and crystal oscillator circuit, all of which can use existing circuits. For example, the power supply circuit connects different power input pins of FPGA to different power supplies, and adds a capacitive load between the power input pin and the ground. The download circuit is a JTAG download circuit; the download mode configuration circuit connects the download mode setting pin of FPGA to 3.3V power supply and GND respectively through two 1KΩ resistors, and these two resistors are selected and welded according to the download requirements during the debugging process; the clock circuit uses a 50MHz active crystal oscillator, which is connected to the power supply and ground, and the crystal oscillator output is output through a 50Ω resistor to avoid the ringing effect on the clock.

[0053] (3) an ARM processor, which controls the programmable gate array circuit to generate a sampling clock by connecting to the programmable gate array circuit, and saves the vehicle operation status signal obtained by the programmable gate array circuit after analog-to-digital conversion and the vehicle positioning and attitude signal obtained to the random access memory by connecting to the random access memory.

[0054] See also Figure 7 , the ARM processor is connected to the memory (program memory, random access memory RAM), FPGA, interface circuit (such as Ethernet communication interface circuit, RS232 communication interface circuit) and real-time display module (LCD screen).

[0055] (4) An Ethernet communication interface circuit, which is connected to the ARM processor so that the ARM processor can transmit the vehicle operation status signal and the vehicle positioning and attitude signal in the random access memory to an external control computer. The communication interface adopts a 100M Ethernet interface. The Ethernet communication interface circuit can be designed according to the standard of the Ethernet interface.

[0056] In addition, as a supplement or replacement, an RS232 communication interface circuit may also be used, which is connected to the ARM processor.

[0057] (5) Program memory, used to store operating system and application software codes, and to interact with the ARM processor.

[0058] (6) Random access memory RAM is used to temporarily store vehicle operation status signals and vehicle positioning and attitude signals. DDR3 random access memory can be used to interact and communicate with the ARM processor.

[0059] (7) Electrically Erasable Read-Only Memory (EEPROM), which serves as the configuration ROM of the field programmable gate array (FPGA) circuit and interacts with the field programmable gate array circuit FPGA.

[0060] Figure 6 In the embodiment, the input end of the signal conditioning module receives the analog signal, the output end of the signal conditioning module is connected to the input end of the analog-to-digital conversion circuit, the ARM processor interacts and communicates with the program memory, the electrically erasable read-only memory EEPROM, the electrically erasable read-only memory EEPROM, and the interface circuit (such as the Ethernet communication interface circuit, i.e., the Ethernet transceiver) respectively, the ARM processor and the programmable gate array circuit FPGA can be integrated on the SoC system chip, and the analog-to-digital conversion circuit interacts and communicates with the ARM processor through the programmable gate array circuit FPGA.

[0061] 4. A real-time display module, which is connected to the data acquisition module to display the vehicle operation status signal and vehicle positioning and attitude signal acquired by the data acquisition module in real time, and an LCD may be used.

[0062] When using this device, after the device is turned on, the ARM processor loads the operating system and application software code from the program memory, and prepares to receive instructions from the control computer outside the device through the network. First, the signal conditioning module amplifies the analog signal output by the sensor to meet the analog input range requirements in the analog-to-digital conversion circuit (i.e., AD converter). When ARM receives the instruction to start acquisition from the control computer outside the device, the ARM processor controls the programmable gate array circuit FPGA to generate a sampling clock, and the analog-to-digital conversion circuit (i.e., AD converter) performs a sampling operation according to the sampling clock provided by the programmable gate array circuit FPGA, and outputs the converted digital signal to the programmable gate array circuit FPGA. The programmable gate array circuit FPGA temporarily stores the collected data in the DDR3 random access memory through DMA, so that the ARM processor extracts data from the DDR3 random access memory, and displays the data in the real-time display module on the one hand, and transmits it to the control computer through the Ethernet interface on the other hand.

[0063] In addition to the above-mentioned Beidou positioning and attitude module, the signal conditioning module, the data acquisition module and the real-time display module, the universal vehicle operation status monitoring device of the utility model also includes an AC / DC power management module and multiple DC / DC conversion modules. The external power is first converted into a suitable DC power supply by the AC / DC power management module, and then converted into multiple groups of DC power supplies that can be used by various circuits of the device by multiple DC / DC conversion modules, such as sensor power supply, analog positive and negative power supply, analog-to-digital converter power supply, etc. In addition, the universal vehicle operation status monitoring device of the utility model also includes a lithium battery pack and related circuits for charging the lithium battery pack, as well as an internal and external power selection switch circuit for controlling the power supply of the built-in lithium battery pack or the external power supply. These circuits can use existing circuits and will not be repeated here.

[0064] The above modules of the present invention are all installed in the housing of the device. Figure 8 The front of the shell 1 has a display area, and the display area includes a liquid crystal display area 2, a channel status display area (area I) 3, a channel status display area (area II) 4, a bus status display area 5, and a power working status display area 6.

[0065] Among them, the channel status display area (zone I) 3 includes: a vibration channel working indicator light, which is optionally located on the left side of the LCD display area 2 and lights up green in the normal acquisition state;

[0066] Among them, the channel status display area (II area) 4 includes: 6 pressure channel working indicator lights, 2 gear channel working indicator lights, 2 speed channel working indicator lights, 4 temperature channel working indicator lights, 1 flow channel working indicator light, and 1 current channel working indicator light. Optionally, this area is located on the right side of the LCD display area 2, and the green light is on in the normal acquisition state;

[0067] It should be noted that the location of the channel status display area (area I) 3 and the channel status display area (area II) 4 is not limited to Figure 1 The positions shown can be set according to actual needs. The number of indicator lights set in the channel status display area (area I) 3 and the channel status display area (area II) 4 can also change with the number of corresponding sensors used. For example, when 6 temperature sensors are used, 6 temperature channel working indicator lights corresponding to the 6 temperature sensors should be set in the channel status display area (area II) 4.

[0068] Wherein, the bus status display area 5 includes: a Beidou signal status indicator light and a vehicle bus status indicator light.

[0069] The power status display area 6 includes: a working status light, a power status light, and a battery indicator light. When the device is turned on or starts collecting data, the working light will be always on.

[0070] See also Figure 8 One side of the housing has a button area, and the button area includes a system power button 62 and a stop sampling button 8. When the system power button 62 is pressed for 2 seconds, the power status light turns on, indicating that the system is started and the system is successfully turned on. When the system power button 62 is pressed for 7 seconds, the power status light turns off, indicating that the system is powered off and the system is successfully turned off. The stop sampling button 8 is used to control the acquisition of the channel. The device automatically acquires data when it is turned on. Pressing the stop sampling button 8 stops the acquisition. Pressing the stop sampling button 8 again continues the acquisition.

[0071] See also Figure 8The shell also has a physical interface area, which includes a first Beidou antenna interface 91 and a second Beidou antenna interface 92 arranged on one side of the shell, and an I zone vibration signal input interface 31 and a II zone signal input interface 41 for pressure, gear, speed, temperature, flow, and current, a communication interface 7, and a power supply interface 61 arranged on the other side of the shell. Among them, the I zone vibration signal input interface 31, the vibration signal input of 4 vibration channels; the II zone signal input interface 41: 1 channel current, 6 channels pressure, 2 channels gear, 2 channels speed, 4 channels temperature, 1 channel flow; communication interface 7: communication interface 7: vehicle-mounted 232 bus, CAN bus, Ethernet communication (used to connect with a computer to debug analog channel signals, and to recover them afterwards).

[0072] It should be noted that the location of the button area and the physical interface area is not limited to Figure 1 The position shown can be set as required.

[0073] The device provided by the utility model has the functions of automatic, real-time and comprehensive collection, control, storage and digital display on the vehicle. By accurately acquiring vehicle operation status data and vehicle driving status data, it can improve the monitoring accuracy of general vehicles, improve the informationization level of general vehicles and the informationization management capabilities.

[0074] See also Figure 1 The general vehicle operation status monitoring system provided in this embodiment includes: a sensor device arranged on the general vehicle, a first Beidou antenna arranged at the front of the general vehicle and a second Beidou antenna arranged at the rear of the general vehicle, and the above-mentioned general vehicle operation status monitoring device.

[0075] The sensing device includes a plurality of sensors, which are connected to the universal vehicle operation status monitoring device through dedicated sensor signal lines. The utility model does not limit the types, quantities, and installation positions of the plurality of sensors. The specific types, quantities, and installation positions can be deployed according to actual needs. Figure 1Taking the embodiment shown as an example, four vibration sensors are provided, which are arranged at different positions of the power transmission device to realize monitoring of the power transmission device; four temperature sensors are provided, the first one is provided at the bottom of the oil pan of the engine to measure the oil temperature, the second one is provided on the gearbox to measure the transmission oil temperature, the third one is provided on the cooling water channel to measure the cooling water temperature, and the fourth one is provided in the intake pipe to measure the intake air temperature, so as to monitor the lubrication system, gearbox, cooling system, and engine intake; one current sensor is provided, which is provided in the starting system to measure the battery current, so as to monitor the starting system; two gear sensors are provided, for example, they are provided on the shifting device to measure the gear type and the driving gear position respectively, so as to accurately count the motorcycle hours of the vehicle in different gears of a certain gear type; one flow sensor is provided, which is provided in the pipeline between the engine fuel filter and the injection pump, so as to measure the fuel flow, so as to monitor the engine. Six pressure sensors are provided, which are provided at various pipelines of the vehicle, so as to monitor the pressure of each pipeline.

[0076] Of course, different monitoring parameters and different sensors have different monitoring significances. Table 1 only shows some monitoring parameters.

[0077] Table 1. Operation monitoring parameters

[0078]

[0079] The gear position sensor of this embodiment uses a photoelectric switch to sense the actual control position of the gear lever (hereinafter referred to as the gear lever). Taking an armored vehicle as an example, the gear position of the gearbox rotates clockwise to the eight gear positions of reverse gear, neutral gear, 1st gear, 2nd gear, 3rd gear, 4th gear, 5th gear, and 6th gear. The gear position sensor uses a photoelectric switch to sense the eight gear positions. Fig. 9 , one gear corresponds to one photoelectric switch, one photoelectric switch controls one analog switch. Taking the 3rd gear as an example, one photoelectric switch controls the 3rd gear analog switch. Preferably, in order to prevent interference from other optical signals, Fig. 9 In the example, a photoelectric switch with modulation and demodulation is used to control the analog switch composed of CD4066. Due to the uniqueness of the gear position, at a certain moment, there is only one photoelectric switch corresponding to a certain gear position that outputs a low level. Assuming that the photoelectric switch corresponding to the 3rd gear outputs a low level, the low level is inverted into a high level by CD4006 and then input to the next CD4066 analog switch to control the output voltage value of the next CD4066. The output of 8 voltage levels is realized by 8 integrated resistors, and one voltage value corresponds to one gear position. The voltage value is converted by A / D to identify the gear position, as shown in Table 3.

[0080] Table 3. Gear sensor calibration results

[0081]

[0082] The gear position of the armored vehicle's gearbox is controlled by the gear lever. Pushing it all the way down is the mechanical gear, and pulling it out is the hydraulic gear. The gear position sensor can also use a photoelectric switch to sense the hydraulic gear and the mechanical gear. The hydraulic gear and the mechanical gear are identified by an independent photoelectric switch with modulation and demodulation. The photoelectric switch with modulation and demodulation is used to control 8 analog switches composed of CD4066. If the analog switch outputs a low level, it is a hydraulic gear, otherwise it is a mechanical gear.

[0083] When installing the gear sensor, first remove the gear scale plate of the armored vehicle, install the gear sensor at the location of the scale plate, and stick a reflective sticker on the gear pointer.

[0084] The sensor connector can use a 4-core aviation plug XS12K-4P, pin 1 is connected to a 5V power supply, pin 2 is grounded, pin 3 outputs a gear position signal, and pin 4 outputs a mechanical and hydraulic gear position signal.

[0085] This system combines the sensing device with the Beidou positioning and attitude determination module in the general vehicle operation status monitoring device, and can automatically obtain the electronic use history shown in Table 3, realize accurate statistics of vehicle use and consumption, distinguish the motorcycle hour consumption under different gears, and realize automatic management of vehicle use.

[0086] Table 3. Chassis electronics activation history

[0087]

[0088] In addition, the universal vehicle operation status monitoring device can also be provided with an external signal input interface for receiving vehicle bus data and two-way CAN bus data.

[0089] The universal vehicle operation status monitoring system provided by the utility model can automatically, in real time, comprehensively and accurately obtain the vehicle's vibration, starting current, pipeline pressure, speed, gear position, temperature, vehicle bus and related data transmitted by Beidou satellite, and store and display these data, which can improve the accuracy of universal vehicle monitoring, and improve the degree of informatization of universal vehicles and the informatization management capabilities.

[0090] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the present invention is not limited by this. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention shall be within the scope of the present invention.

Claims

1. A general vehicle running status monitoring device, characterized in that: The device comprises: A Beidou positioning and attitude determination module, which collects vehicle positioning and attitude determination signals for monitoring vehicle latitude and longitude, attitude, driving speed, and mileage by connecting a first Beidou antenna arranged at the front of the general vehicle and a second Beidou antenna arranged at the rear of the general vehicle; A signal conditioning module, which is connected to a sensor device provided on the general vehicle and receives a vehicle operation status signal collected by the sensor device of the general vehicle in real time; A data acquisition module, which obtains the vehicle running status signal from the signal conditioning module by connecting to the signal conditioning module, and obtains the vehicle positioning and attitude signal from the Beidou positioning and attitude module by connecting to the Beidou positioning and attitude module; A real-time display module, which is connected to the data acquisition module to display the vehicle running status signal and vehicle positioning and attitude signal acquired by the data acquisition module in real time; Wherein, the data acquisition module includes: A random access memory for temporarily storing vehicle operation status signals and vehicle positioning and attitude signals; an analog-to-digital conversion circuit, which is connected to the signal conditioning module to perform analog-to-digital conversion on the vehicle running status signal conditioned by the signal conditioning module; A programmable gate array circuit, which provides the generated sampling clock to the analog-to-digital conversion circuit by connecting to the analog-to-digital conversion circuit, obtains the vehicle running state signal after analog-to-digital conversion by the analog-to-digital conversion circuit, and obtains the vehicle positioning and attitude signal collected by the Beidou positioning and attitude module by connecting to the Beidou positioning and attitude module; The ARM processor controls the programmable gate array circuit to generate a sampling clock by connecting to the programmable gate array circuit, and saves the vehicle operation status signal obtained by the programmable gate array circuit after analog-to-digital conversion and the obtained vehicle positioning and attitude signal to the random access memory by connecting to the random access memory.

2. The device according to claim 1, characterized in that The vehicle running state signal includes a vehicle vibration signal collected by a vibration sensor in the sensing device; Correspondingly, the signal conditioning module includes a vibration conditioning circuit for conditioning the vehicle vibration signal, and the vibration conditioning circuit includes two amplifiers with switchable gains and a low-pass filter with switchable cutoff frequency connected in sequence.

3. The device according to claim 1 or 2, characterized in that: The vehicle running state signal includes one or more of a current signal collected by a current sensor in the sensing device, a pressure signal collected by a pressure sensor in the sensing device, a speed signal collected by a speed sensor in the sensing device, a gear signal collected by a gear sensor in the sensing device, and a fuel flow signal collected by a flow sensor in the sensing device; Correspondingly, the signal conditioning module includes one or more of a current conditioning circuit, a pressure conditioning circuit, a speed conditioning circuit, a gear conditioning circuit, and a flow conditioning circuit. Each of the current conditioning circuit, the pressure conditioning circuit, the speed conditioning circuit, the gear conditioning circuit, and the flow conditioning circuit includes an amplifier with a gain of 1 and a low-pass filter with a fixed cutoff frequency connected in sequence.

4. The device according to claim 3, characterized in that The vehicle running state signal includes a temperature signal collected by a temperature sensor in the sensing device; Correspondingly, the signal conditioning module includes a temperature conditioning circuit, which includes an instrument amplifier with a gain of 50 and a low-pass filter with a cut-off frequency of 100 kHz connected in sequence.

5. The device according to claim 1, characterized in that The data acquisition module also includes: The Ethernet communication interface circuit is connected to the ARM processor so that the ARM processor transmits the vehicle operation status signal and the vehicle positioning and posture signal in the random access memory to an external control computer.

6. The device according to claim 1, characterized in that The Beidou positioning and attitude determination module, the signal conditioning module, the data acquisition module and the real-time display module are all installed in the housing of the device.

7. The device according to claim 6, characterized in that The front of the housing has a display area, which includes a liquid crystal display area, a channel status display area, a bus status display area, and a power supply working status display area, wherein: The channel status display area includes the vibration channel working indicator light, the pressure channel working indicator light, the gear channel working indicator light, the speed channel working indicator light, the temperature channel working indicator light, the flow channel working indicator light, and the current channel working indicator light; The bus status display area includes: Beidou signal status indicator light and vehicle bus status indicator light; The power status display area includes: a working status light, a power status light, and a battery indicator light.

8. The device according to claim 7, characterized in that One side of the housing has a button area, and the button area includes a system power button and a stop sampling button.

9. The device according to claim 7 or 8, characterized in that The shell also has a physical interface area, which includes a first Beidou antenna interface and a second Beidou antenna interface arranged on one side of the shell, as well as a vibration signal input interface and pressure, gear, speed, temperature, flow, current input interfaces, a communication interface, and a power supply interface arranged on the other side of the shell.

10. A universal vehicle operation status monitoring system, characterized in that: The system includes: a sensor device arranged on the general vehicle, a first Beidou antenna arranged at the front of the general vehicle, a second Beidou antenna arranged at the rear of the general vehicle, and a general vehicle operation status monitoring device as described in any one of claims 1-9.

Images