Receiver circuit for vehicle wheel end temperature sensing and early warning

Abstract

The utility model discloses a receiver circuit for vehicle wheel end temperature sensing and early warning, and belongs to the technical field of control circuits. According to the receiver circuit provided by the utility model, the main control circuit module, the wireless circuit module, the DC-DC power supply circuit module, the Dijeng screen driving circuit module, the LED and the buzzer circuit are integrated, and the main control circuit module is connected with the antenna and the buzzer circuit, so that the circuit can give out visual and auditory early warning when abnormal temperature is detected; operators are reminded to take measures in time, real-time monitoring and early warning of the temperature of the wheel end of the vehicle are achieved, and potential faults caused by overheating of the wheel end of the vehicle can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to control circuit technical field, concretely relates to a receiver circuit. BACKGROUND

[0002] With the rapid development of global automobile industry, intelligentization and automatic driving technology are constantly innovating, leading the future direction of the industry. Under this background, the application demand of commercial vehicles in the field of transportation, logistics and other fields presents a sustained growth trend. These vehicles not only carry heavy transportation tasks, but also face complex and variable road environment and strict operation requirements. Therefore, how to ensure the safety of commercial vehicles and improve the operation economy has become the focus problem that the fleet managers and enterprises generally concern.

[0003] Tire, as an indispensable key component in vehicle, its performance state is directly related to the driving safety and operation cost of vehicle. Once the tire appears abnormal condition, such as high temperature, it often indicates that there may be failure risk of brake system. This potential safety hazard not only may cause traffic accidents, personnel casualties and property losses, but also may have adverse effects on the operation efficiency and maintenance cost of vehicle.

[0004] Therefore, how to realize real-time monitoring of tire temperature and prevent potential risks has become a technical problem to be solved by the current technical personnel in the field. SUMMARY

[0005] The utility model aims at providing a receiver circuit for vehicle wheel end temperature sensing and early warning to overcome the problem of insufficient real-time monitoring of tire temperature in prior art.

[0006] The utility model solves the above technical problem through the following technical scheme:

[0007] A receiver circuit for vehicle wheel end temperature sensing and early warning, comprising a main control circuit module, a wireless circuit module, a DC-DC power supply circuit module and a Diwen screen driving circuit, the main control circuit module is electrically connected with the wireless circuit module, the DC-DC power supply circuit module and the Diwen screen driving circuit module respectively, the wireless circuit module is connected with an antenna and is used for receiving temperature data of vehicle wheel end, the receiver circuit further comprises an LED and a buzzer circuit, which are electrically connected with the main control circuit module respectively and are used for realizing early warning.

[0008] The utility model further improves in that it further comprises a vibration detection circuit module, an SD card circuit module, a FLASH circuit module and an encryption chip circuit module, which are electrically connected with the main control circuit module respectively.

[0009] The further improvement of the utility model lies in that: the LED comprises a first LED and a second LED, the main control circuit module adopts SWM32SRET6-50 chip and its peripheral circuit, the peripheral circuit comprises a capacitor, the pin 58 of SWM32SRET6-50 chip is connected with a buzzer circuit, the pin 31 and the pin 32 are connected with the first LED and the second LED respectively; the pin 2, the pin 10, the pin 16, the pin 34 and the pin 47 of SWM32SRET6-50 chip are all connected with +3.3V power supply, the pin 3 and the pin 15 are connected with ground after being connected with a capacitor in series respectively, the pin 35, the pin 36 and the pin 46 are directly connected with ground, and the pin 12 is connected with the pin 11 in common after being connected with a capacitor in series.

[0010] The further improvement of the utility model lies in that: the vibration detection circuit module adopts MPU6050 chip and its peripheral circuit, the peripheral circuit comprises a resistor and a pull-up resistor, the pin 5 of SWM32SRET6-50 chip is divided into two paths, one path is connected with +3.3V power supply through a pull-up resistor, and the other path is connected with the pin 12 of MPU6050 chip through a resistor, the pin 62 of SWM32SRET6-50 chip is connected with the pin 23 of MPU6050 chip, the pin 61 of SWM32SRET6-50 chip is connected with the pin 24 of MPU6050 chip, and the pin 60 of SWM32SRET6-50 chip is connected with the pin 12 of MPU6050 chip.

[0011] The further improvement of the utility model lies in that: the wireless circuit module adopts LLCC68 chip and its peripheral circuit, the peripheral circuit comprises a resistor and a capacitor, the pin 5 of LLCC68 chip is connected with the pin 25 of SWM32SRET6-50 chip, the pin 8 of LLCC68 chip is connected with the pin 24 of SWM32SRET6-50 chip, the pin 10 of LLCC68 chip is connected with the pin 23 of SWM32SRET6-50 chip, the pin 18 of LLCC68 chip is connected with the pin 22 of SWM32SRET6-50 chip, the pin 16 of LLCC68 chip is connected with the pin 17 of SWM32SRET6-50 chip, the pin 15 of LLCC68 chip is connected with the pin 18 of SWM32SRET6-50 chip, and the pin 14 of LLCC68 chip is connected with the pin 14 of SWM32SRET6-50 chip after being connected with a resistor in series; the pin 17 of LLCC68 chip is divided into two paths, one path is connected with the pin 19 of SWM32SRET6-50 chip, and the other path is connected with the pin 13 of LLCC68 chip after being connected with a resistor in series, the pin 13 of LLCC68 chip is divided into two paths, one path is connected with +3.3V power supply, and the other path is connected with ground after being connected with two capacitors in parallel; the pin 1, the pin 2, the pin 3, the pin 4, the pin 11, the pin 12, the pin 19 and the pin 20 of LLCC68 chip are all connected with ground, and the pin 21 is connected with an antenna.

[0012] The further improvement of the utility model lies in that the DC-DC power circuit module adopts JW5015A chip.

[0013] The further improvement of the utility model lies in that the Diwin screen drive circuit module comprises a soft start circuit module, an FPC1 chip, a first connector H4 and a second connector H3, the pin 14 of the SWM32SRET6-50 chip is connected with the input end of the soft start circuit, the output end of the soft start circuit is connected with the power input pin of the FPC1 chip, the first connector H4 and the second connector H3 respectively, the pin 7 of the SWM32SRET6-50 chip is connected with the first receiving pin of the FPC1 chip, the first connector H4 and the second connector H3 respectively, the pin 10 of the SWM32SRET6-50 chip is connected with the first sending pin of the FPC1 chip, the first connector H4 and the second connector H3 respectively, the pin 8 of the SWM32SRET6-50 chip is connected with the second sending pin of the FPC1 chip, the first connector H4 and the second connector H3 respectively, and the pin 9 of the SWM32SRET6-50 chip is connected with the second receiving pin of the FPC1 chip, the first connector H4 and the second connector H3 respectively.

[0014] The further improvement of the utility model lies in that the SD card circuit module adopts MR01A-01211 chip and its peripheral circuit, the peripheral circuit comprises resistance and pull-down resistance, the pin 6, the pin 10, the pin 11, the pin 12 and the pin 13 of the MR01A-01211 chip are commonly grounded, the pin 1, the pin 2, the pin 3, the pin 5, the pin 7, the pin 8 and the pin 9 of the MR01A-01211 chip are all divided into two paths, one path is that the pin 1 of the MR01A-01211 chip is connected with the pin 43 of the SWM32SRET6-50 chip after being connected with pull-down resistance in series, the pin 2 of the MR01A-01211 chip is connected with the pin 44 of the SWM32SRET6-50 chip after being connected with pull-down resistance in series, the pin 3 of the MR01A-01211 chip is connected with the pin 48 of the SWM32SRET6-50 chip after being connected with pull-down resistance in series, the pin 5 of the MR01A-01211 chip is connected with the pin 49 of the SWM32SRET6-50 chip after being connected with pull-down resistance in series, the pin 7 of the MR01A-01211 chip is connected with the pin 41 of the SWM32SRET6-50 chip after being connected with pull-down resistance in series, the pin 8 of the MR01A-01211 chip is connected with the pin 42 of the SWM32SRET6-50 chip after being connected with pull-down resistance in series, and the pin 9 of the MR01A-01211 chip is connected with the pin 40 of the SWM32SRET6-50 chip after being connected with pull-down resistance in series, and the other path is that the pin 1, the pin 2, the pin 3, the pin 5, the pin 7, the pin 8 and the pin 9 of the MR01A-01211 chip are connected with +3.3V power supply after being connected with resistance in series respectively.

[0015] The further improvement of the utility model lies in that: the FLASH circuit module adopts BY25Q64ASSIG chip and its peripheral circuit, the peripheral circuit includes resistance and capacitance, pin 1 of BY25Q64ASSIG chip is divided into two ways, one way is connected with + 3.3V power supply, another way is connected with pin 54 of SWM32SRET6-50 chip, pin 2 of BY25Q64ASSIG chip is connected with pin 55 of SWM32SRET6-50 chip, pin 3 of BY25Q64ASSIG chip is connected with + 3.3V power supply, pin 4 of BY25Q64ASSIG chip is grounded, pin 5 of BY25Q64ASSIG chip is connected with pin 56 of SWM32SRET6-50 chip, pin 6 of BY25Q64ASSIG chip is connected with pin 57 of SWM32SRET6-50 chip after being connected with resistance in series, pin 7 of BY25Q64ASSIG chip is connected with + 3.3V power supply, pin 8 of BY25Q64ASSIG chip is divided into two ways, one way is connected with + 3.3V power supply, another way is connected with ground after being connected with capacitance in series.

[0016] The further improvement of the utility model lies in that: the encryption chip circuit module adopts SMEC90ST chip and its peripheral circuit, the peripheral circuit includes diode, pin 2 of SMEC90ST chip is grounded, pin 5 of SMEC90ST chip is connected with the cathode of diode, the anode of diode is connected with + 3.3V power supply, pin 4 of SMEC90ST chip is connected with pin 33 of SWM32SRET6-50 chip after being connected with resistance in series.

[0017] Compared with the prior art, the utility model has the positive progress effect of:

[0018] The receiver circuit provided by the utility model integrates the main control circuit module, the wireless circuit module, the DC-DC power supply circuit module, the Diven screen driving circuit module, the LED and the buzzer circuit, the connection of the main control circuit module with the antenna and the buzzer circuit enables the circuit to give visual and audible early warning when detecting abnormal temperature, reminds the operator to take measures in time, realizes the real-time monitoring and early warning of the temperature of the vehicle wheel end, and can effectively prevent potential faults caused by overheating of the vehicle wheel end.

[0019] Further, there are also vibration detection circuit module, SD card circuit module, FLASH circuit module and encryption chip circuit module, wherein the vibration detection circuit module can predict potential mechanical failure of the vehicle by monitoring the vibration mode of the vehicle; the SD card module allows to store a large amount of temperature data, facilitating the recording and analysis of vehicle operation data, providing data support for fault troubleshooting and performance optimization; the FLASH circuit module provides non-volatile storage, so that the temperature data will not be lost even after power failure, ensuring the reliability and durability of the receiver circuit data; the encryption chip module ensures the security of data during storage and transmission.

[0020] Further, the double LED design provides intuitive early warning indication, and when the temperature is abnormal, the operator is reminded through the flicker or color change of the LED; the main control circuit module adopts SWM32SRET6-50 chip, which supports complex data acquisition, processing and communication tasks, ensuring the stability and response speed of the circuit.

[0021] Further, the MPU6050 chip integrates a gyroscope and an accelerometer, which can accurately detect abnormal vibration of the vehicle and predict potential mechanical failure by analyzing the vibration mode.

[0022] Further, the wireless circuit module adopts LLCC68 chip, which provides long-distance and low-power wireless communication capability for the receiver circuit, ensuring real-time transmission and reception of vehicle wheel end temperature data, and providing a comprehensive safety guarantee and intelligent management solution for the vehicle.

[0023] Further, the DC-DC power supply circuit module adopts JW5015A chip, which provides stable power output, can smooth the input voltage, reduce power noise, and ensure the normal work of each functional module. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application.

[0025] Figure 1 is a connection diagram of the main control circuit module;

[0026] Figure 2 is a connection diagram of the FLASH circuit module;

[0027] Figure 3 is a connection diagram of the vibration detection circuit module;

[0028] Figure 4 is a connection diagram of the buzzer circuit;

[0029] Figure 5 is a schematic diagram of the connection of the wireless circuit module;

[0030] Figure 6 is a schematic diagram of the connection of the SD card circuit module;

[0031] Figure 7 is a schematic diagram of the connection of the encryption chip circuit module;

[0032] Figure 8 is a schematic diagram of the connection of the Dvin screen driving circuit module, wherein, Figure 8 (a) is a soft start circuit module, Figure 8 (b) is an FPC1 chip, Figure 8 (c) is a first connector H4, Figure 8 (d) is a second connector H3;

[0033] Figure 9 is a schematic diagram of the connection of the DC-DC power supply circuit module;

[0034] Figure 10 is a schematic diagram of the connection of the LED;

[0035] Figure 11 is a schematic diagram of the connection of the reset circuit;

[0036] Figure 12 is a schematic diagram of the connection of the crystal oscillator circuit;

[0037] Figure 13 is a schematic diagram of the connection of the filter capacitor circuit;

[0038] Figure 14 is a schematic diagram of the connection of the LDO 3.3V voltage stabilizing circuit;

[0039] Figure 15 is a schematic diagram of the connection of the electrostatic protection circuit;

[0040] Figure 16 is a schematic diagram of the connection of the power supply selection circuit;

[0041] Figure 17 is a schematic diagram of the connection of the anti-reverse connection circuit. DETAILED DESCRIPTION

[0042] The utility model will be further explained in detail in combination with the drawings, which is an explanation of the utility model but not a limitation.

[0043] The utility model provides a receiver circuit for vehicle wheel end temperature sensing and early warning, including master control circuit module, wireless circuit module, DC-DC power supply circuit module and diwen screen drive circuit, master control circuit module is connected wireless circuit module, DC-DC power supply circuit module and diwen screen drive circuit module respectively, wireless circuit module connects antenna, is used to receive the temperature data of vehicle wheel end, the receiver circuit still includes LED and buzzer circuit, is connected master control circuit module respectively, is used for realizing early warning.

[0044] The receiver circuit integrates the master control circuit module, the wireless circuit module, the DC-DC power supply circuit module, the diwen screen drive circuit module, the LED and the buzzer circuit, and through the connection of the master control circuit module, the antenna and the buzzer circuit, the circuit can send visual and audible early warning when detecting abnormal temperature, reminding the operator to take timely measures, realizing real-time monitoring and early warning of the temperature of the vehicle wheel end, and effectively preventing potential faults caused by overheating of the vehicle wheel end.

[0045] Specifically, it further includes a vibration detection circuit module, an SD card circuit module, a FLASH circuit module and an encryption chip circuit module, which are electrically connected to the master control circuit module.

[0046] Specifically, the LED includes a first LED and a second LED; the master control circuit module adopts an SWM32SRET6-50 chip and a peripheral circuit thereof, the peripheral circuit includes a capacitor, a pin 58 of the SWM32SRET6-50 chip is connected to the buzzer circuit, a pin 31 and a pin 32 are connected to the first LED and the second LED respectively, and the SWM32SRET6-50 chip is connected to the buzzer circuit. Figure 10 ; the pin 2, the pin 10, the pin 16, the pin 34 and the pin 47 of the SWM32SRET6-50 chip are all connected to a +3.3V power supply, the pin 3 and the pin 15 are connected to ground after being connected in series with a capacitor, the pin 35, the pin 36 and the pin 46 are directly connected to ground, and the pin 12 is connected to ground after being connected in series with a capacitor.

[0047] Specifically, the vibration detection circuit module adopts an MPU6050 chip and a peripheral circuit thereof, the peripheral circuit includes a resistor and a pull-up resistor, a pin 5 of the SWM32SRET6-50 chip is divided into two paths, one path is connected to a +3.3V power supply through a pull-up resistor, and the other path is connected to a pin 12 of the MPU6050 chip through a resistor, a pin 62 of the SWM32SRET6-50 chip is connected to a pin 23 of the MPU6050 chip, a pin 61 of the SWM32SRET6-50 chip is connected to a pin 24 of the MPU6050 chip, and a pin 60 of the SWM32SRET6-50 chip is connected to the pin 12 of the MPU6050 chip.

[0048] Specifically, the wireless circuit module adopts LLCC68 chip and its peripheral circuit, the peripheral circuit includes resistance and capacitance, pin 5 of LLCC68 chip is connected with pin 25 of SWM32SRET6-50 chip, pin 8 of LLCC68 chip is connected with pin 24 of SWM32SRET6-50 chip, pin 10 of LLCC68 chip is connected with pin 23 of SWM32SRET6-50 chip, pin 18 of LLCC68 chip is connected with pin 22 of SWM32SRET6-50 chip, pin 16 of LLCC68 chip is connected with pin 17 of SWM32SRET6-50 chip, pin 15 of LLCC68 chip is connected with pin 18 of SWM32SRET6-50 chip, pin 14 of LLCC68 chip is connected with pin 14 of SWM32SRET6-50 chip after connecting with resistance in series; pin 17 of LLCC68 chip is divided into two paths, one path is connected with pin 19 of SWM32SRET6-50 chip, the other path is connected with pin 13 of LLCC68 chip after connecting with resistance in series, pin 13 of LLCC68 chip is divided into two paths, one path is connected with +3.3V power supply, the other path is connected with ground after connecting with two capacitors in parallel; pin 1, pin 2, pin 3, pin 4, pin 11, pin 12, pin 19 and pin 20 of LLCC68 chip are all connected with ground, pin 21 is connected with antenna.

[0049] Specifically, the DC-DC power supply circuit module adopts JW5015A chip.

[0050] Specifically, the Diven screen driving circuit module includes soft start circuit module, FPC1 chip, first connector H4 and second connector H3, pin 14 of SWM32SRET6-50 chip is connected with input end of soft start circuit, output end of soft start circuit is respectively connected with power input pin of FPC1 chip, first connector H4 and second connector H3; pin 7 of SWM32SRET6-50 chip is respectively connected with first receiving pin of FPC1 chip, first connector H4 and second connector H3, pin 10 of SWM32SRET6-50 chip is respectively connected with first sending pin of FPC1 chip, first connector H4 and second connector H3, pin 8 of SWM32SRET6-50 chip is respectively connected with second sending pin of FPC1 chip, first connector H4 and second connector H3, pin 9 of SWM32SRET6-50 chip is respectively connected with second receiving pin of FPC1 chip, first connector H4 and second connector H3.

[0051] Specifically, the SD card circuit module adopts MR01A-01211 chip and its peripheral circuit, the peripheral circuit includes resistance and pull-down resistance, the pin 6, pin 10, pin 11, pin 12 and pin 13 of MR01A-01211 chip are commonly grounded, the pin 1, pin 2, pin 3, pin 5, pin 7, pin 8 and pin 9 of MR01A-01211 chip are divided into two paths, one path is that the pin 1 of MR01A-01211 chip is connected with the pin 43 of SWM32SRET6-50 chip through a pull-down resistance, the pin 2 of MR01A-01211 chip is connected with the pin 44 of SWM32SRET6-50 chip through a pull-down resistance, the pin 3 of MR01A-01211 chip is connected with the pin 48 of SWM32SRET6-50 chip through a pull-down resistance, the pin 5 of MR01A-01211 chip is connected with the pin 49 of SWM32SRET6-50 chip through a pull-down resistance, the pin 7 of MR01A-01211 chip is connected with the pin 41 of SWM32SRET6-50 chip through a pull-down resistance, the pin 8 of MR01A-01211 chip is connected with the pin 42 of SWM32SRET6-50 chip through a pull-down resistance, the pin 9 of MR01A-01211 chip is connected with the pin 40 of SWM32SRET6-50 chip through a pull-down resistance;

[0052] The other path is that the pin 1, pin 2, pin 3, pin 5, pin 7, pin 8 and pin 9 of MR01A-01211 chip are respectively connected with +3.3V power supply through a resistance.

[0053] Specifically, the FLASH circuit module adopts BY25Q64ASSIG chip and its peripheral circuit, the peripheral circuit includes resistance and capacitor, the pin 1 of BY25Q64ASSIG chip is divided into two paths, one path is connected with +3.3V power supply, the other path is connected with the pin 54 of SWM32SRET6-50 chip, the pin 2 of BY25Q64ASSIG chip is connected with the pin 55 of SWM32SRET6-50 chip, the pin 3 of BY25Q64ASSIG chip is connected with +3.3V power supply, the pin 4 of BY25Q64ASSIG chip is grounded, the pin 5 of BY25Q64ASSIG chip is connected with the pin 56 of SWM32SRET6-50 chip, the pin 6 of BY25Q64ASSIG chip is connected with the pin 57 of SWM32SRET6-50 chip through a resistance, the pin 7 of BY25Q64ASSIG chip is connected with +3.3V power supply, the pin 8 of BY25Q64ASSIG chip is divided into two paths, one path is connected with +3.3V power supply, the other path is connected with ground through a capacitor.

[0054] Specifically, the encryption chip circuit module adopts SMEC90ST chip and its peripheral circuit, the peripheral circuit includes diode, pin 2 of SMEC90ST chip is grounded, pin 5 of SMEC90ST chip is connected with the cathode of diode, the anode of diode is connected with +3.3V power supply, pin 4 of SMEC90ST chip is connected with pin 33 of SWM32SRET6-50 chip after being connected with resistance in series.

[0055] In a specific embodiment of the utility model, a receiver circuit for vehicle wheel end temperature sensing and early warning, including main control circuit module, wireless circuit module, DC-DC power supply circuit module and diwen screen drive circuit, main control circuit module is connected wireless circuit module, DC-DC power supply circuit module and diwen screen drive circuit module respectively, wireless circuit module connects antenna, is used to receive the temperature data of vehicle wheel end, receiver circuit still includes LED and buzzer circuit, is connected main control circuit module respectively, is used to realize early warning, still includes vibration detection circuit module, SD card circuit module, FLASH circuit module and encryption chip circuit module, is connected main control circuit module respectively, wherein, buzzer circuit refers to Figure 4 .

[0056] Main control circuit module has information processing core, signal management hub, multifunctional control center, electronic system brain, integrated control platform, automation control engine, electronic equipment command system and intelligent control unit, is used to receive and process the information of each input end and output signal.

[0057] Refer to Figure 1, the main control circuit module adopts SWM32SRET6-50 chip as MCU, which is used for data acquisition, data processing, wireless communication, power management, data storage, security encryption, user interface, intelligent control, automation control, electronic device command, wherein, pin 2 is connected with +3.3v as a wake-up pin, which is used to wake up from low power consumption mode and restore normal working state; pin 3 is connected with 1uf capacitor and then grounded, which is used for ADC capacitor filtering; pin 5 is pulled up with R15 resistance connected with +3.3V and then connected with R16 connected with MPU6050, which is used to receive the data of MPU6050, and if vibration is detected, a signal is sent to make the main control return to normal working state from low power consumption working state; pins 6~10 are responsible for sending data to LCD display screen; pin 10 is connected with +3.3V to provide power supply for the chip; pin 11 and pin 12 are connected with capacitor C9, which is used for filtering and decoupling to ensure the stability of chip power supply and reduce interference; pin 13 is used for clock synchronization of LCD and host device to ensure the synchronism of data transmission; pin 15 is connected with C8 and then grounded, which is used for filtering and decoupling to reduce electromagnetic interference; pin 16 is connected with +3.3V to provide stable power supply to ensure the normal work of analog circuit; the power supply end of SWM32SRET6-50 chip is connected with power supply, and the grounding end is connected with ground; the pins 20, 21 of SWM32SRET6-50 chip are grounded; in terms of communication, the wireless circuit module adopts LLCC68 chip, and the LLCC68 chip is LLCC68ZTR8-GC, which is a wireless radio frequency module based on radio frequency chip LLCC68; pin 17 of SWM32SRET6-50 chip is connected with pin 16 of LLCC68 chip, which is responsible for host output signal; pin 18 of SWM32SRET6-50 chip is connected with pin 15 of LLCC68 chip, which is responsible for host input signal; pin 19 of SWM32SRET6-50 chip is connected with pin 17 of LLCC68 chip, which is used for transmitting CS signal (chip select signal); pin 22 of SWM32SRET6-50 chip is connected with pin 18 of LLCC68 chip, which is used for circuit initialization and reset; pin 23 of SWM32SRET6-50 chip is connected with pin 10 of LLCC68 chip; pins 24, 25 of SWM32SRET6-50 chip are used for digital-to-analog conversion in wireless LLCC68-LoRa wireless module; pins 26, 27 of SWM32SRET6-50 chip are used for serial communication for debugging; pins 28 and 29 of SWM32SRET6-50 chip are connected with crystal circuit to provide external crystal of the chip and provide clock signal for the main control circuit module, see Figure 12 ; pin 30 of SWM32SRET6-50 chip is connected with reset circuit, which is connected with +3.3V through R2 and then connected with reset button and then connected with C20 and then grounded, which is used for resetting the chip, see Figure 11; the pins 31 and 32 of the SWM32SRET6-50 chip are used for controlling the LED lamp; the pins 40 to 44 of the SWM32SRET6-50 chip are respectively used for the SD card data interface, including command and data transmission; the pin 46 of the SWM32SRET6-50 chip is grounded and the pin 47 is connected with +3.3V, which provides stable power supply for the IO port; the pin 48 of the SWM32SRET6-50 chip is used for the command transmission of the SD card and is an important part of the SD card communication; the pin 50 of the SWM32SRET6-50 chip is connected with +3.3V and the R11 is grounded, which is used for the main control circuit module to be able to stably and reliably reset.

[0058] In a specific embodiment of the present application, a filter capacitor circuit is further connected on the SWM32SRET6-50 chip, as shown in Figure 13 .

[0059] As shown in Figure 2 , the FLASH circuit module adopts a BY25Q64ASSIG chip, which is used for providing a reliable data storage solution for the vehicle, ensuring that the circuit can stably operate and timely respond to potential safety risks, the pin 2 of the BY25Q64ASSIG chip corresponds to the pin 54 of the SWM32SRET6-50 chip, which is used for storing program data, user data or other information that needs to be persisted; the pin 3 of the BY25Q64ASSIG chip corresponds to the pin 55 of the SWM32SRET6-50 chip, and the main control circuit module reads data from the flash chip through this pin; the pin 5 of the BY25Q64ASSIG chip corresponds to the pin 56 of the SWM32SRET6-50 chip, and the main control circuit module writes data to the flash chip through this pin; the pin 57 of the SWM32SRET6-50 chip is connected with R7, which is used for ensuring that the FLASH_CLK pin remains at a low level when it is not driven, so that the clock signal of the SPI communication is synchronized with the data transmission of the microcontroller; the pin 58 of the SWM32SRET6-50 chip is connected with R73 and a triode, and then connected with +3.3V and the buzzer is grounded, which is used for detecting faults and accidents and the like alarm; the pin 60 of the SWM32SRET6-50 chip is an interrupt pin, which is used for informing the main control circuit module that there is new data to be read or a specific event has occurred; the pins 61 and 62 of the SWM32SRET6-50 chip are connected with R5 and R6, and +3.3V is connected, which ensures that the signal line remains at a high level when it is idle, and is the data line and clock line of the I 2 C communication, which is used for data exchange with the main control circuit module, ensuring the safety and reliability of the vehicle under various operating conditions, preventing potential faults and accidents through real-time monitoring and early warning, thereby ensuring the efficient operation of the vehicle and reducing the operating cost.

[0060] As shown in Figure 3, the shock detection circuit module adopts MPU6050 chip, for ensuring the charge pump circuit can work normally monitor vehicle running state, its circuit uses for MPU6050 chip pin 1 ground, in order to make MPU6050 internal clock source, and VLOGIC pin +3.3V and through a C11 capacitor ground is to filter decoupling to provide stable logic level and filter out noise;MPU6050 chip pin 9 R4 ground, for determining I 2 C address;MPU6050 chip pin 10 and 11 C12 ground, for filtering decoupling power supply noise filter;MPU6050 chip pin 13 100nF capacitor and ground, and then connect +3.3V, the main role is to filter and stabilize the voltage decoupling power supply;MPU6050 chip pin 18 and 20 pin a 2.2nF capacitor ground, through the analysis of vibration mode, can predict potential mechanical failure.

[0061] Referring to Figure 6 , SD card circuit module adopts MR01A-01211 chip, for ensuring the microcontroller to SD card data transmission reliability and stability of the circuit, MR01A-01211 chip pin 1, 2, 3, 5, 7, 8, 9 R59, R60, R61, R62, R63, R64, R65, respectively, for current limiting or as a data line pull-down resistor, to ensure that the data line will not float when there is no drive, respectively corresponding to the micro control board SD card data interface;MR01A-01211 chip pin 1, 2, 3, 5, 7, 8, 9 R53, R54, R55, R56, R57, R58, R17, respectively, +3.3V, for ensuring that there is no data transmission, these lines are in a known state;MR01A-01211 chip pin 4 C40 and C41 +3.3V ground, for filtering decoupling to prevent power supply noise on the internal circuit of SD card caused by interference, pin 6, 10, 11, 12, 13 ground, to realize the storage system running data, including wheel end temperature, vibration information, for subsequent analysis and fault diagnosis.

[0062] Referring to Figure 5The wireless circuit module is used for providing all-round safety guarantee and intelligent management solution for the vehicle, pins 1, 2, 3, 4, 11, 12, 19, 20 of the LLCC68 chip are grounded, for ensuring stability of the wireless communication circuit; pin 13 of the LLCC68 chip is connected with C47 and C48 capacitors and 3.3V power supply, for filtering decoupling to provide cleaner power supply and reduce influence on wireless communication performance; pin 17 of the LLCC68 chip is connected with R14, for ensuring that the pin is not floating when there is no communication, thereby avoiding uncertain state; pin 21 of the LLCC68 chip is connected with an antenna for transmitting and receiving wireless signals, for enhancing wireless communication capability of the module and improving coverage range and quality of signals. It is a key technology for realizing intelligent management.

[0063] Referring to Figure 7 The encryption chip circuit module adopts SMEC90ST chip, pin 2 of the SMEC90ST chip is grounded for providing reference voltage and ensuring stability of the ESD circuit; pin 5 of the SMEC90ST chip is connected with D3 and then +3.3V, for protecting the circuit from voltage spikes; pin 4 of the SMEC90ST chip is connected with R37, for limiting current passing through the ESD protection device and preventing excessive current from damaging the circuit; pin 5 of the SMEC90ST chip is a debugging interface SWD interface, for program download or debugging of the master control circuit module, for providing key electrostatic protection for the vehicle, enhancing safety and reliability of the system, and being an important component of the intelligent management solution.

[0064] Referring to Figure 8 The Dwin screen driving circuit module includes a soft start circuit module, an FPC1 chip, a first connector H4 and a second connector H3, for data display, abnormality early warning, intelligent management, data recording and analysis, and man-machine interaction, the FPC1 chip is used for connecting data and power lines of the display screen, H4 and H3 are used for connecting data lines of the display screen, +5V_DWIN is working voltage of the display screen, for providing power supply for the display screen; R71 and R72 of DWIN_PWREN are grounded, Q7 is connected with R69, R70, C46, Q8, 5V through the control signal of DWIN_PWREN, for filtering decoupling to provide stable power supply for the display screen and control working state thereof, and fully realize safety guarantee for the vehicle.

[0065] Referring to Figure 9, DC-DC power supply circuit module adopts JW5015A chip, which is used for smoothing input voltage and reducing power supply noise. Pin 1 of JW5015A chip is connected to L5 switch to release energy when it is closed to maintain continuity of current; pin 2 and pin 3 of JW5015A chip are connected to C43 and C44, and then to C45 for output filtering and decoupling to provide stable 5V voltage; pin 4 of JW5015A chip is connected to R66 and R68 for adjusting stability of output voltage; pin 6, 7, 8 and 9 of JW5015A chip are connected to R67 and R52, and then to C42 and ground for filtering and decoupling to realize input 10V voltage and stable output 5V voltage; see Figure 14 , Figure 15 , Figure 16 and Figure 17 The input end of the DC-DC power supply circuit module is connected with an electrostatic protection circuit to improve the reliability and stability of the entire power supply circuit; the output ends of the DC-DC circuit and the reverse connection prevention circuit are respectively connected to two input ends of the power supply selection circuit, on the one hand, the reverse connection prevention circuit can prevent the positive and negative poles of the power supply from being connected incorrectly, thereby avoiding serious consequences such as circuit short circuit and component burning, on the other hand, through the power supply selection circuit, the output power supply from the DC-DC power supply circuit or the reverse connection prevention circuit can be flexibly selected, which increases the redundancy of the power supply and improves the reliability and fault tolerance of the circuit; the output end of the power supply selection circuit is connected to the input end of the LDO 3.3.V voltage stabilizing circuit, so that the voltage is controlled to be output below 3.3V voltage value, the LDO (low dropout linear voltage regulator) has the characteristics of low noise, low power consumption and high precision, and can provide stable voltage output to ensure the normal operation and performance stability of the circuit.

[0066] After the system starts, the main control circuit module begins to monitor all input signals, including the signals of the vibration detection circuit, the vibration detection circuit monitors the vehicle state in real time, and once abnormal vibration is detected, immediately sends a signal to the main control circuit through the MPU6050; the main control circuit processes the received data and displays real-time information and early warning on the LCD display screen through the Diwen screen driving circuit, at the same time, the system sends data to the remote monitoring center through the wireless circuit module to realize remote data monitoring and management, the data is stored through the SD card circuit for fault diagnosis and system performance analysis, the FLASH circuit ensures the persistent storage of key data, which can retain data even in the case of system power failure, and the encryption chip circuit provides data protection throughout the process to prevent unauthorized access, and the DC-DC power supply circuit provides stable power supply for all modules to ensure that the system can reliably operate in various environments.

[0067] The above merely illustrates the technical thought of the present application and cannot limit the protection scope of the present application, and any modification made on the basis of the technical scheme according to the technical thought of the present application falls within the protection scope of the present application.

Claims

1. A receiver circuit for vehicle wheel end temperature sensing and early warning, characterized in that: It includes a main control circuit module, a wireless circuit module, a DC-DC power supply circuit module and a Diwen screen driving circuit. The main control circuit module is electrically connected to the wireless circuit module, the DC-DC power supply circuit module and the Diwen screen driving circuit module respectively; The wireless circuit module is connected to the antenna and is used to receive temperature data of the vehicle wheel end; The receiver circuit also includes an LED and a buzzer circuit, which are electrically connected to the main control circuit module respectively for achieving early warning.

2. A receiver circuit for vehicle wheel end temperature sensing and warning according to claim 1, characterized in that: It also includes a vibration detection circuit module, an SD card circuit module, a FLASH circuit module and an encryption chip circuit module, which are electrically connected to the main control circuit module respectively.

3. A receiver circuit for vehicle wheel end temperature sensing and warning according to claim 2, characterized in that: The LED includes a first LED and a second LED, the main control circuit module uses a SWM32SRET6-50 chip and its peripheral circuit, the peripheral circuit includes a capacitor, pin 58 of the SWM32SRET6-50 chip is connected to the buzzer circuit, and pin 31 and pin 32 are connected to the first LED and the second LED respectively; Pins 2, 10, 16, 34, and 47 of the SWM32SRET6-50 chip are all connected to the +3.3V power supply. Pins 3 and 15 are connected in series with capacitors and then grounded. Pins 35, 36, and 46 are directly grounded. Pin 12 is connected in series with a capacitor and grounded together with pin 11.

4. A receiver circuit for vehicle wheel end temperature sensing and warning according to claim 3, characterized in that: The vibration detection circuit module adopts the MPU6050 chip and its peripheral circuit, which includes resistors and pull-up resistors. Pin 5 of the SWM32SRET6-50 chip is divided into two paths, one path is connected to the +3.3V power supply through the pull-up resistor, and the other path is connected to pin 12 of the MPU6050 chip through the resistor. Pin 62 of the SWM32SRET6-50 chip is connected to pin 23 of the MPU6050 chip, pin 61 of the SWM32SRET6-50 chip is connected to pin 24 of the MPU6050 chip, and pin 60 of the SWM32SRET6-50 chip is connected to pin 12 of the MPU6050 chip.

5. The receiver circuit for vehicle wheel end temperature sensing and warning according to claim 3, characterized in that: The wireless circuit module adopts LLCC68 chip and its peripheral circuit, the peripheral circuit includes resistors and capacitors, the pin 5 of LLCC68 chip is connected to the pin 25 of SWM32SRET6-50 chip, the pin 8 of LLCC68 chip is connected to the pin 24 of SWM32SRET6-50 chip, the pin 10 of LLCC68 chip is connected to the pin 23 of SWM32SRET6-50 chip, the pin 18 of LLCC68 chip is connected to the pin 22 of SWM32SRET6-50 chip, and the pin 16 of LLCC68 chip is connected to the pin 27 of SWM32SRET6-50 chip. Pin 17 of the ET6-50 chip and pin 15 of the LLCC68 chip are connected to pin 18 of the SWM32SRET6-50 chip. Pin 14 of the LLCC68 chip is connected in series with a resistor and then connected to pin 14 of the SWM32SRET6-50 chip. Pin 17 of the LLCC68 chip is divided into two paths. One path is connected to pin 19 of the SWM32SRET6-50 chip, and the other path is connected in series with a resistor and then connected to pin 13 of the LLCC68 chip. Pin 13 of the LLCC68 chip is divided into two paths. One path is connected to the +3.3V power supply, and the other path is connected in parallel with two capacitors and then grounded. Pins 1, 2, 3, 4, 11, 12, 19, and 20 of the LLCC68 chip are all grounded, and pin 21 is connected to the antenna.

6. The receiver circuit for vehicle wheel end temperature sensing and warning according to claim 3, characterized in that: The DC-DC power supply circuit module uses the JW5015A chip.

7. The receiver circuit for vehicle wheel end temperature sensing and warning according to claim 3, characterized in that: The Diwen screen drive circuit module includes a soft start circuit module, an FPC1 chip, a first connector H4 and a second connector H3. Pin 14 of the SWM32SRET6-50 chip is connected to the input end of the soft start circuit, and the output end of the soft start circuit is respectively connected to the power input pins of the FPC1 chip, the first connector H4 and the second connector H3; Pin 7 of the SWM32SRET6-50 chip is respectively connected to the first receiving pin of the FPC1 chip, the first connector H4 and the second connector H3, Pin 10 of the SWM32SRET6-50 chip is respectively connected to the first sending pin of the FPC1 chip, the first connector H4 and the second connector H3, Pin 8 of the SWM32SRET6-50 chip is respectively connected to the second sending pin of the FPC1 chip, the first connector H4 and the second connector H3, and Pin 9 of the SWM32SRET6-50 chip is respectively connected to the second receiving pin of the FPC1 chip, the first connector H4 and the second connector H3.

8. The receiver circuit for vehicle wheel end temperature sensing and warning according to claim 3, characterized in that: The SD card circuit module uses the MR01A-01211 chip and its peripheral circuits. The peripheral circuits include resistors and pull-down resistors. Pins 6, 10, 11, 12, and 13 of the MR01A-01211 chip are grounded. Pins 1, 2, 3, 5, 7, 8, and 9 of the MR01A-01211 chip are divided into two paths. One of the paths is: Pin 1 of the MR01A-01211 chip is connected in series with a pull-down resistor and then connected to Pin 43 of the SWM32SRET6-50 chip. Pin 2 of the MR01A-01211 chip is connected in series with a pull-down resistor and then connected to Pin 44 of the SWM32SRET6-50 chip. Connect pin 3 of the R01A-01211 chip in series with a pull-down resistor and then connect it to pin 48 of the SWM32SRET6-50 chip. Connect pin 5 of the MR01A-01211 chip in series with a pull-down resistor and then connect it to pin 49 of the SWM32SRET6-50 chip. Connect pin 7 of the MR01A-01211 chip in series with a pull-down resistor and then connect it to pin 41 of the SWM32SRET6-50 chip. Connect pin 8 of the MR01A-01211 chip in series with a pull-down resistor and then connect it to pin 42 of the SWM32SRET6-50 chip. Connect pin 9 of the MR01A-01211 chip in series with a pull-down resistor and then connect it to pin 40 of the SWM32SRET6-50 chip. The other path is: Pins 1, 2, 3, 5, 7, 8, and 9 of the MR01A-01211 chip are connected in series with resistors and then connected to the +3.3V power supply.

9. A receiver circuit for vehicle wheel end temperature sensing and early warning according to claim 3, characterized in that: The FLASH circuit module adopts BY25Q64ASSIG chip and its peripheral circuit, which includes resistors and capacitors. Pin 1 of BY25Q64ASSIG chip is divided into two paths, one of which is connected to +3.3V power supply and the other is connected to pin 54 of SWM32SRET6-50 chip. Pin 2 of BY25Q64ASSIG chip is connected to pin 55 of SWM32SRET6-50 chip. Pin 3 of BY25Q64ASSIG chip is connected to +3.3V power supply. Pin 4 of the 5Q64ASSIG chip is grounded, pin 5 of the BY25Q64ASSIG chip is connected to pin 56 of the SWM32SRET6-50 chip, pin 6 of the BY25Q64ASSIG chip is connected in series with a resistor and then connected to pin 57 of the SWM32SRET6-50 chip, pin 7 of the BY25Q64ASSIG chip is connected to the +3.3V power supply, and pin 8 of the BY25Q64ASSIG chip is divided into two paths, one is connected to the +3.3V power supply, and the other is connected in series with a capacitor and then grounded.

10. The receiver circuit for vehicle wheel end temperature sensing and warning according to claim 3, characterized in that: The encryption chip circuit module adopts the SMEC90ST chip and its peripheral circuit, which includes a diode. Pin 2 of the SMEC90ST chip is grounded, pin 5 of the SMEC90ST chip is connected to the cathode of the diode, the anode of the diode is connected to the +3.3V power supply, and pin 4 of the SMEC90ST chip is connected to pin 33 of the SWM32SRET6-50 chip after being connected in series with a resistor.

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