Vehicle-mounted fault monitoring and early warning device

Abstract

The utility model relates to a vehicle-mounted fault monitoring and early warning device, which comprises a solar cell panel, an instrument upper cover, a display cover plate, a monitoring and early warning main control unit, a storage module, a display screen, a key circuit board, a sound and vibration sensor, a filtering and noise reduction processing circuit board and an instrument base, sound and vibration signals during running of a motor vehicle are detected in real time through the sound and vibration sensor, online monitoring of the running state of the motor vehicle, early warning in advance and accident risk reduction are achieved through the monitoring and early warning main control unit, the storage module and the sound and vibration sensor, and a data synchronization interface is provided through the interface module and the Bluetooth module. Real-time synchronization of detection data of a sample and a local server is realized, the product quality control and problem tracking capability is enhanced by a standardized process, the integrity of a detection procedure is further guaranteed, and online detection and monitoring requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of motor vehicle fault monitoring, in particular to a vehicle-mounted fault monitoring and early warning device. Background Art

[0002] At present, the application of motor vehicles in human life is becoming more and more common, and the safety of their operation is a major issue concerning people's lives and property. As the functions of motor vehicles increase, their structural complexity and technical content are also increasing, causing motor vehicle users to rely more on various sensors installed in the vehicle itself to judge vehicle failures.

[0003] The sound and vibration characteristics of motor vehicles during operation are important information about the formation and occurrence of their faults. Monitoring these two types of information can provide early warning of vehicle faults, prevent damage through early repairs, and avoid worsening of faults, thereby reducing the risk of motor vehicle accidents and significantly reducing the loss of life and property of motor vehicle users. However, fault detection in existing technologies is used for fault detection during vehicle maintenance, and is performed by collecting abnormal sounds during operation, receiving and distinguishing them with the human ear, or comparing and judging them with built-in solidified vehicle sound data characteristics, which can easily lead to misjudgments and omissions, and cannot provide timely warnings based on sound and vibration, bringing accident risks to the operation of motor vehicles. Summary of the invention

[0004] The utility model provides a vehicle-mounted fault monitoring and early warning device, which can accurately detect and warn motor vehicle faults in real time by monitoring the sound and vibration characteristics of the motor vehicle when it is running.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A vehicle-mounted fault monitoring and early warning device, comprising a solar panel, an instrument upper cover, a display cover, a monitoring and early warning main control unit and a storage module, a display screen and a key circuit board, a sound and vibration sensor, a filtering and noise reduction processing circuit board and an instrument base;

[0007] The instrument upper cover is provided with a through hole, the solar cell panel is arranged below the through hole of the cover, the display cover is partially arranged below the instrument upper cover, on the display screen and the key circuit board, the display screen and the key circuit board are viewed through the display cover, and the instrument upper cover, the solar cell panel and the display cover constitute a cover structure;

[0008] The cover plate structure is arranged on the instrument base, and the monitoring and early warning main control unit and storage module, display screen and key circuit board, sound and vibration sensor, and filtering and noise reduction processing circuit board are arranged between the instrument base and the cover plate structure.

[0009] Furthermore, the monitoring and early warning main control unit and storage module include a main control chip, an interface module, a battery module and a storage module, and the interface module, the battery module and the storage module are all connected to the pins of the main control chip.

[0010] Furthermore, it also includes an FPGA control unit and a Bluetooth module, the display screen and the key circuit board are connected to the FPGA control unit, and the FPGA control unit and the Bluetooth module are connected to the main control chip.

[0011] Furthermore, the interface module includes a serial interface module, an SPI interface module, a UART interface module and a GPIO interface module.

[0012] Furthermore, the sound and vibration sensor includes a sound sensor and a vibration sensor, the sound sensor detects sounds within a range of 32 to 103 dB generated during motor driving, and the vibration sensor detects vibration changes within a range of 200 to 4000 Hz generated during motor driving.

[0013] Furthermore, the filtering and noise reduction processing circuit board includes an A / D control module and an A / D digital-to-analog conversion module, the sound and vibration sensor is connected to the A / D control module, the A / D control module is connected to the A / D digital-to-analog conversion module, and the A / D digital-to-analog conversion module is connected to the monitoring and early warning main control unit and the storage module.

[0014] Furthermore, the main control chip adopts an ARM microprocessor, a DSP processor or a single-chip microcomputer.

[0015] Furthermore, it also includes an audible and visual alarm, which is connected to the monitoring and early warning main control unit and the storage module.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1) Real-time detection of sound and vibration signals of motor vehicles during operation through sound and vibration sensors;

[0018] 2) The solar energy is converted into electrical energy through solar panels to power the device. The product has high integration, small size, easier to carry, and easier to connect and link with other detection systems or platforms;

[0019] 3) Through the monitoring and early warning main control unit, storage module, and sound and vibration sensors, online monitoring of the operating status of motor vehicles is achieved, early warning is given, and accident risks are reduced;

[0020] 4) Through the interface module and Bluetooth module, a data synchronization interface is provided to achieve real-time synchronization of sample test data with the local server, using standardized processes to enhance product quality control and problem tracking capabilities, further ensuring the integrity of the test procedures and meeting online testing and monitoring needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is a structural schematic diagram of the solar cell panel of the utility model.

[0023] Figure 3 It is a structural schematic diagram of the upper cover of the instrument described in the utility model.

[0024] Figure 4 It is a structural schematic diagram of the display cover plate of the utility model.

[0025] Figure 5 It is a schematic diagram of the structure of the monitoring and early warning main control unit and the storage module of the utility model.

[0026] Figure 6 It is a schematic diagram of the structure of the display screen and key circuit board of the utility model.

[0027] Figure 7 It is a schematic diagram of the structure of the filtering and noise reduction processing circuit board of the utility model.

[0028] Figure 8 It is a structural schematic diagram of the instrument base of the utility model.

[0029] Fig. 9 It is a wiring diagram of the monitoring and early warning main control unit and storage module, display screen and key circuit board, sound and vibration sensor, and filtering and noise reduction processing circuit board of the embodiment of the utility model.

[0030] In the figure: 1. Solar panel 2. Instrument cover 3. Display cover 4. Monitoring and early warning main control unit and storage module 5. Display screen and key circuit board 6. Sound and vibration sensor 7. Filter noise reduction processing circuit board 8. Instrument base DETAILED DESCRIPTION

[0031] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0032] See Figure 1-8, is a schematic diagram of the structure of the utility model. The utility model is a vehicle-mounted fault monitoring and early warning device, including a solar panel 1, an instrument upper cover 2, a display cover 3, a monitoring and early warning main control unit and a storage module 4, a display screen and a key circuit board 5, a sound and vibration sensor 6, a filtering and noise reduction processing circuit board 7, an audible and visual alarm and an instrument base 8;

[0033] The instrument upper cover 2 is provided with a through hole, and the solar cell panel 1 is arranged below the through hole of the cover, so that the solar cell panel 1 can absorb solar energy through the instrument upper cover 2; the display cover 3 is partially arranged under the instrument upper cover 2 and on the display screen and the key circuit board 5, and the display screen and the key circuit board are viewed through the display cover 3; the instrument upper cover 2, the solar cell panel 1, and the display cover 3 constitute a cover structure;

[0034] The cover structure is arranged on the instrument base 8, and the monitoring and early warning main control unit and storage module 4, the display screen and button circuit board 5, the sound and vibration sensor 6, and the filtering and noise reduction processing circuit board 7 are arranged between the instrument base 8 and the cover structure.

[0035] The monitoring and early warning main control unit and storage module 4 include a main control chip, an interface module, a battery module, a storage module, an FPGA control unit and a Bluetooth module. The storage module includes a memory ROM and a memory RAM. In this embodiment, the memory ROM provides 256Mb of PROM memory, and the memory RAM provides 2Gb of SDRAM memory. The main control chip adopts an ARM microprocessor STM32F103C8T6, and the interface module includes a serial interface module, an SPI interface module, a UART interface module and a GPIO interface module;

[0036] The sound and vibration sensor 6 includes a sound sensor and a vibration sensor, wherein the sound sensor detects the sound in the range of 32 to 103 dB generated during motor driving, and the vibration sensor detects the vibration change in the range of 200 to 4000 Hz generated during motor driving;

[0037] The filtering and noise reduction processing circuit board 7 includes an A / D control module and an A / D digital-to-analog conversion module.

[0038] See Fig. 9, the interface module is connected to the TXD P3.1 and RXD P3.0 pins of the main control chip through the serial I / O port, and the Bluetooth module is connected to the P3.4 and P3.5 pins of the main control chip through the RXD and TXD pins respectively; the display screen of the display screen and key circuit board 5 adopts an RGB display interface and an LED display screen interface, and is connected to the TXD and RXD pins of the FPGA control unit through the RXD and TXD pins, the buttons of the display screen and key circuit board 5 are connected to the SW pin of the FPGA control unit through the SW pin, the CLK pin of the FPGA control unit is connected to the CLK pin of the main control unit, the battery module is connected to the VCC and GND pins of the main control chip through the VCC and GND pins, and is powered by a 3.3V solar cell, and the temperature of the battery during power supply is monitored by a thermistor;

[0039] The P3.6 and P3.7 pins of the main control chip are connected to the memory ROM and the memory RAM in the storage module through a read-write controller, and the data of the main control chip is read and written to the storage module. The storage module is connected to the PO port of the main control chip through an address latch, and the output pin of the storage module is connected to the corresponding input pin of the decoder. The P2 port of the main control chip is connected to the enable pin of the decoder and the storage module. The sound and light alarm is connected to the AOUT0 pin of the A / D digital-to-analog conversion module, and the A / D digital-to-analog conversion module is connected to the decoder and the main control chip. The sound and vibration sensor 6 is connected to the A / D control module pin in the filtering and noise reduction processing circuit board 7, and the A / D control module is connected to the AI0 and AOUT1 pins of the A / D digital-to-analog conversion module through the AOUT and DA pins respectively. The A / D digital-to-analog conversion module is connected to the P2 port of the main control chip through the decoder, and the A / D digital-to-analog conversion module pin is connected to the P0 port of the main control chip.

[0040] Working principle: 1) The monitoring and early warning device is turned on, the program in the FPGA is loaded into the FPGA control unit by the ARM, and the ARM system initializes the human-computer interaction interface on the display screen;

[0041] 2) The user sets the type of motor vehicle to be monitored and the operating parameters of the sound and vibration sensors;

[0042] 3) Generate a monitoring model by calling the working parameters matching the motor vehicle type in the memory and save it to the system storage unit;

[0043] 4) The ARM microprocessor + FPAGA control unit starts to periodically send instructions to stimulate the sensor to work and receive sensor data. The sensor feedback signal is filtered and noise-reduced by the filtering and noise reduction processing circuit board 7 to obtain a useful signal after filtering out interference signals;

[0044] 5) The filtered signal is converted into a digital signal by a high-speed A / D converter and then transmitted to the FPGA control unit for processing;

[0045] 6) The FPGA control unit receives the sampled data, caches it, processes the signal, and then passes it to the ARM microprocessor for processing through the SPI data interface;

[0046] 7) Repeat steps 4-7, the ARM microprocessor obtains the detection data and presents it to the user in the form of messages and graphics;

[0047] 8) The reception of the key signals of the display screen and the key circuit board 5 and the state control of the display screen are performed by the FPGA control unit, wherein the processing of the key signals and the configuration of the display screen state are completed by the FPGA control unit through the serial port and handed over to the ARM microprocessor for processing;

[0048] 9) The working status and alarm information of the FPGA main control unit are sent to the ARM microprocessor through the serial port;

[0049] 10) ARM microprocessor monitors its own operating status and alarm information;

[0050] 11) The relevant business statistics, working status and alarm information of the ARM microprocessor + FPGA control unit are saved to the local storage for on-site viewing, and can also be synchronized to the remote service system through the Bluetooth module.

[0051] The above embodiments are implemented based on the technical solution of the utility model, and detailed implementation methods and specific operation processes are given, but the protection scope of the utility model is not limited to the above embodiments. The methods used in the above embodiments are conventional methods unless otherwise specified.

Claims

1. A vehicle-mounted fault monitoring and early warning device, characterized in that: It includes solar panels, instrument cover, display cover, monitoring and early warning main control unit and storage module, display screen and key circuit board, sound and vibration sensor, filtering and noise reduction processing circuit board, instrument base, FPGA control unit and Bluetooth module; The instrument upper cover is provided with a through hole, the solar cell panel is arranged below the through hole of the cover, the display cover is partially arranged below the instrument upper cover, on the display screen and the key circuit board, the display screen and the key circuit board are viewed through the display cover, and the instrument upper cover, the solar cell panel and the display cover constitute a cover structure; The cover plate structure is arranged on the instrument base, and the monitoring and early warning main control unit and storage module, display screen and key circuit board, sound and vibration sensor, and filtering and noise reduction processing circuit board are arranged between the instrument base and the cover plate structure; The monitoring and early warning main control unit and storage module include a main control chip, an interface module, a battery module and a storage module, wherein the interface module, the battery module and the storage module are all connected to the pins of the main control chip, and the solar panel is connected to the battery module; The display screen and the key circuit board are connected to the FPGA control unit, and the FPGA control unit and the Bluetooth module are connected to the main control chip; The filtering and noise reduction processing circuit board includes an A / D control module and an A / D digital-to-analog conversion module, the sound and vibration sensor is connected to the A / D control module, the A / D control module is connected to the A / D digital-to-analog conversion module, and the A / D digital-to-analog conversion module is connected to the monitoring and early warning main control unit and the storage module.

2. The vehicle-mounted fault monitoring and early warning device according to claim 1, characterized in that: The interface modules include a serial interface module, an SPI interface module, a UART interface module and a GPIO interface module.

3. The vehicle-mounted fault monitoring and early warning device according to claim 1 is characterized in that: The sound and vibration sensor comprises a sound sensor and a vibration sensor. The sound sensor detects the sound within the range of 32-103 dB generated during motor driving, and the vibration sensor detects the vibration change within the range of 200-4000 Hz generated during motor driving.

4. The vehicle-mounted fault monitoring and early warning device according to claim 1, characterized in that: The main control chip adopts an ARM microprocessor, a DSP processor or a single chip microcomputer.

5. The vehicle-mounted fault monitoring and early warning device according to claim 1, characterized in that: It also includes an audible and visual alarm, which is connected to the monitoring and early warning main control unit and the storage module.

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