Bus debugging structure of electric vehicle

Abstract

The utility model discloses an electric vehicle bus debugging structure, which comprises an interface circuit module, a bus signal processing module, an MCU (Microprogrammed Control Unit), a communication module and a mobile terminal, and is characterized in that the interface circuit module is electrically connected with a whole vehicle wire harness and sends bus information to the bus signal processing module; the MCU performs communication polling operation with a communication instrument arranged on the bus, after the MCU successfully establishes communication with the communication instrument, the MCU sends a conversion instruction to the bus signal processing module, the bus signal processing module converts received bus information into bus data and sends the bus data to the MCU, and the MCU converts the received bus data and sends the converted bus data to the mobile terminal; the interface circuit module, the bus signal processing module, the MCU and the communication module are all arranged on the detection device. The above structures are integrated on the detection device, carrying and installation are convenient, the bus type can be identified through communication polling operation, bus data are converted and then sent to the mobile terminal, manual selection of the bus type is avoided, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bus testing, in particular to an electric vehicle bus debugging structure. Background Art

[0002] With the extensive application of Internet of Things technology, intelligent electric two-wheeled vehicles have gradually entered our daily lives. In order to meet the development and maintenance of electric vehicles, the electric vehicle bus is often debugged through bus conversion tools and computers to capture data analysis to detect electric vehicles. Due to the large number of bus types and large amounts of data, it is inconvenient to operate when testing through computers and multiple related host computer software, which affects the development and maintenance efficiency of the entire vehicle, and this needs to be improved. Summary of the invention

[0003] The utility model provides a new electric vehicle bus debugging structure to solve the defects in the prior art such as too many bus types, inconvenience in operating the bus through a computer and multiple related upper software, and affecting the test efficiency.

[0004] In order to solve the above technical problems, the utility model is implemented through the following technical solutions:

[0005] An electric vehicle bus debugging structure comprises an interface circuit module, a bus signal processing module, an MCU, a communication module and a mobile terminal, wherein the interface circuit module is electrically connected to the wiring harness of the entire vehicle and sends bus information to the bus signal processing module, and the MCU communicates with the mobile terminal through the communication module; the MCU performs a communication polling operation with a communication instrument arranged on the bus, and when the MCU successfully establishes communication with the communication instrument arranged on the bus, the MCU sends a conversion instruction to the bus signal processing module, and after receiving the conversion instruction, the bus signal processing module converts the received bus information into bus data and sends it to the MCU, and the MCU converts the received bus data according to a communication protocol and sends it to the mobile terminal through the communication module; and also comprises a detection device, and the interface circuit module, the bus signal processing module, the MCU and the communication module are all arranged on the detection device.

[0006] The settings of the interface circuit module, bus signal processing module, MCU, and communication module can not only identify the bus type through communication polling operations, but also convert the detected bus data according to the corresponding bus protocol and send it to the mobile terminal, thereby avoiding the manual selection of the bus type by the detection personnel, improving the operability of the detection device, and improving the detection efficiency; the interface circuit module, bus signal processing module, MCU and communication module are all integrated on the detection device, which facilitates the carrying and installation of the detection device, and further improves the convenience during detection.

[0007] Preferably, in the above-mentioned electric vehicle bus debugging structure, the interface circuit module includes a signal acquisition unit, the signal acquisition unit is used to collect port voltage values ​​and send the collected port voltage values ​​to the MCU, a voltage preset value is set in the MCU, the MCU is used to compare the received port voltage value with the voltage preset value, when the port voltage value is consistent with the voltage preset value, the vehicle port is normal, and the MCU performs a communication polling operation; when the port voltage value is inconsistent with the voltage preset value, the MCU sends port abnormality information to the mobile terminal and stops detection.

[0008] The signal acquisition unit is used to detect the status of the entire vehicle port, making it easier for inspectors to conduct segmented testing of the entire vehicle, facilitating the inspection of faulty nodes and further improving the efficiency of inspection.

[0009] Preferably, in the above-described electric vehicle bus debugging structure, the detection device is provided with a whole vehicle wiring harness plug interface and a conversion line plug interface, the whole vehicle wiring harness plug interface is plugged with the whole vehicle wiring harness, and the conversion line plug interface is electrically connected to an external controller.

[0010] The bus and the detection device are connected by plugging into the vehicle wiring harness plug interface and the conversion line plug interface, which makes it convenient for the detection personnel to connect the bus and the detection device, and further improves the simplicity of detection.

[0011] Preferably, the above-mentioned electric vehicle bus debugging structure further includes a power module, which supplies power to the interface circuit module, the bus signal processing module, the MCU, and the communication module.

[0012] The power supply module realizes the power supply to the interface circuit module, bus signal processing module, MCU and communication module at any time, which facilitates the detection work.

[0013] Preferably, in the above-mentioned electric vehicle bus debugging structure, the communication module adopts Bluetooth.

[0014] The communication module adopts Bluetooth, which has the advantages of mature structure, strong anti-interference ability, stable communication, small size and easy integration.

[0015] Preferably, in the above-mentioned electric vehicle bus debugging structure, the signal acquisition unit includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a diode D1, a capacitor C1 and an NPN transistor Q1, the resistor R3 and the resistor R6 are connected in series to the base of the NPN transistor Q1, the other end of the resistor R3 is electrically connected to the CXFH-IN port, the resistor R4 is connected in parallel with the capacitor C1, one end of the resistor R4 and the capacitor C1 is grounded, the other end of the resistor R4 and the capacitor C1 is electrically connected between the resistor R3 and the resistor R6, and the resistor R5 It is electrically connected at the collector of the NPN transistor Q1, the other end of the resistor R5 is electrically connected to a 5V power supply, the emitter of the NPN transistor Q1 is grounded, and the pin IN1 of the MCU is electrically connected between the resistor R5 and the collector of the NPN transistor Q1; one end of the resistor R1 is electrically connected to the 5V power supply, one end of the resistor R2 is grounded, the resistor R1 and the resistor R2 are connected in series, the cathode of the diode D1 and the pin IN of the MCU are both electrically connected between the resistor R1 and the resistor R2, and the anode of the diode D1 is electrically connected to the HALL-SINGAL-IN port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural block diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the circuit structure of the signal acquisition unit in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the detection device in the utility model. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-3 The present invention is further described in detail with the following specific embodiments, but they are not intended to limit the present invention:

[0020] Example 1

[0021] like Figure 1-Figure 3As shown, an electric vehicle bus debugging structure includes an interface circuit module 1, a bus signal processing module 2, an MCU3, a communication module 4 and a mobile terminal 5. The interface circuit module 1 is electrically connected to the vehicle wiring harness and sends bus information to the bus signal processing module 2. The MCU3 communicates with the mobile terminal 5 through the communication module 4; the MCU3 performs a communication polling operation with the communication instrument set on the bus. When the MCU3 successfully establishes communication with the communication instrument set on the bus, the MCU3 sends a conversion instruction to the bus signal processing module 2. After receiving the conversion instruction, the bus signal processing module 2 converts the received bus information into bus data and sends it to the MCU3. The MCU3 converts the received bus data according to the communication protocol and sends it to the mobile terminal 5 through the communication module 4; it also includes a detection device 6. The interface circuit module 1, the bus signal processing module 2, the MCU3 and the communication module 4 are all arranged on the detection device 6.

[0022] Preferably, the interface circuit module 1 includes a signal acquisition unit 11, which is used to collect port voltage values ​​and send the collected port voltage values ​​to MCU3. A voltage preset value is set in the MCU3, and the MCU3 is used to compare the received port voltage value with the voltage preset value. When the port voltage value is consistent with the voltage preset value, the vehicle port is normal, and the MCU3 performs a communication polling operation; when the port voltage value is inconsistent with the voltage preset value, the MCU3 sends port abnormality information to the mobile terminal 5 and stops detection.

[0023] Preferably, the detection device 6 is provided with a vehicle wiring harness plug-in interface 61 and a conversion line plug-in interface 62, the vehicle wiring harness plug-in interface 61 is plugged with the vehicle wiring harness, and the conversion line plug-in interface 62 is electrically connected to an external controller.

[0024] Preferably, it further includes a power supply module 7 , which supplies power to the interface circuit module 1 , the bus signal processing module 2 , the MCU 3 , and the communication module 4 .

[0025] Preferably, the communication module 4 uses Bluetooth.

[0026] Preferably, the signal acquisition unit 11 includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a diode D1, a capacitor C1 and an NPN transistor Q1, wherein the resistor R3 and the resistor R6 are connected in series to the base of the NPN transistor Q1, and the other end of the resistor R3 is electrically connected to the CXFH-IN port, the resistor R4 is connected in parallel to the capacitor C1, one end of the resistor R4 and the capacitor C1 is grounded, the other ends of the resistor R4 and the capacitor C1 are electrically connected between the resistor R3 and the resistor R6, and the resistor R5 is electrically connected to the NPN transistor At the collector of the transistor Q1, the other end of the resistor R5 is electrically connected to a 5V power supply, the emitter of the NPN transistor Q1 is grounded, and the pin IN1 of the MCU3 is electrically connected between the resistor R5 and the collector of the NPN transistor Q1; one end of the resistor R1 is electrically connected to a 5V power supply, one end of the resistor R2 is grounded, the resistor R1 is connected in series with the resistor R2, the cathode of the diode D1 and the pin IN of the MCU3 are both electrically connected between the resistor R1 and the resistor R2, and the anode of the diode D1 is electrically connected to the HALL-SINGAL-IN port.

[0027] Specifically, Figure 3 As shown, the vehicle wiring harness plug interface 61 and the conversion line plug interface 62 adopt a 5557-16P+5557-8P+5557-6P combination plug-in design with symmetrical ends. The bus can be directly connected to the vehicle wiring harness plug interface 61 through its own connector, and the detection device 6 can be connected to the controller, instrument and other related components through the conversion line plug interface 62 and the external adapter line, thereby realizing the series connection of the detection device 6 and the vehicle wiring harness, which facilitates the detection work.

[0028] More specifically, when performing bus detection on an electric vehicle, if Figure 3 As shown, first plug the bus into the vehicle harness plug-in port 61, and plug the controller, instrument, etc. into the conversion line plug-in port 62 through the adapter cable, and then the test can begin. The following steps will be followed during the test:

[0029] Step 1: The signal acquisition unit 11 collects the port voltage value and sends it to MCU3. MCU3 compares the received port voltage value with the voltage preset value. When the port voltage value is consistent with the voltage preset value, the vehicle port is normal. At this time, the detection device 6 performs the second step. When the port voltage value is inconsistent with the voltage preset value, the detection device 6 stops detecting, and the mobile terminal 5 synchronously displays that the detection status is abnormal.

[0030] Step 2: MCU3 attempts to establish communication with other communication components mounted on the bus, such as instruments and controllers, by means of communication polling. When MCU3 successfully establishes communication with other communication components mounted on the bus, it can be determined that the bus type corresponding to the current sending state of MCU3 is the bus used by the current vehicle system, and the bus type identification is successful. At this time, MCU3 sends a conversion instruction to the bus signal processing module 2, and the bus signal processing module 2 converts the bus information received from the interface circuit module 1 into bus data and sends it to MCU3. In the embodiment of the present application, the bus signal processing module 2 includes a signal level conversion unit, which converts bus information in 485 format, CAN format, and IIC format into bus data in TTL format.

[0031] Step 3: MCU3 converts the acquired bus data according to the corresponding protocol and sends it to the mobile terminal 5 through the communication module 4. At this time, the binary data can be converted into visual text. The inspection personnel use the mobile terminal 5 to input the vehicle model or the corresponding ECU code to query the corresponding bus protocol, and then select the correct bus protocol, enter the operation interface and perform vehicle fault detection according to the text instructions.

[0032] The mobile terminal 5 stores a bus data instruction library, which can be updated after the mobile terminal 5 is connected to the network, thereby further reducing the learning difficulty of the detection personnel and improving the detection and debugging efficiency.

[0033] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application for the present invention should fall within the scope of the present invention.

Claims

1. An electric vehicle bus debugging structure, characterized in that: The invention comprises an interface circuit module (1), a bus signal processing module (2), an MCU (3), a communication module (4) and a mobile terminal (5); the interface circuit module (1) is electrically connected to the vehicle wiring harness and sends bus information to the bus signal processing module (2); the MCU (3) communicates with the mobile terminal (5) through the communication module (4); the MCU (3) performs a communication polling operation with a communication instrument arranged on the bus; when the MCU (3) successfully establishes communication with the communication instrument arranged on the bus, the MCU (3) sends a conversion instruction to the bus signal processing module (2); after receiving the conversion instruction, the bus signal processing module (2) converts the received bus information into bus data and sends it to the MCU (3); the MCU (3) converts the received bus data according to a communication protocol and sends it to the mobile terminal (5) through the communication module (4); and also comprises a detection device (6); the interface circuit module (1), the bus signal processing module (2), the MCU (3) and the communication module (4) are all arranged on the detection device (6).

2. An electric vehicle bus debugging structure according to claim 1, characterized in that: The interface circuit module (1) comprises a signal acquisition unit (11), the signal acquisition unit (11) is used to acquire a port voltage value and send the acquired port voltage value to an MCU (3), a voltage preset value is set in the MCU (3), the MCU (3) is used to compare the received port voltage value with the voltage preset value, when the port voltage value is consistent with the voltage preset value, the vehicle port is normal, and the MCU (3) performs a communication polling operation; When the port voltage value is inconsistent with the preset voltage value, the MCU (3) sends port abnormality information to the mobile terminal (5) and stops detection.

3. The electric vehicle bus debugging structure according to claim 1, characterized in that: The detection device (6) is provided with a vehicle wiring harness plug interface (61) and a conversion line plug interface (62), the vehicle wiring harness plug interface (61) is plugged and matched with the vehicle wiring harness, and the conversion line plug interface (62) is electrically connected to an external controller.

4. The electric vehicle bus debugging structure according to claim 1, characterized in that: It also comprises a power supply module (7), wherein the power supply module (7) supplies power to the interface circuit module (1), the bus signal processing module (2), the MCU (3), and the communication module (4).

5. The electric vehicle bus debugging structure according to claim 1, characterized in that: The communication module (4) adopts Bluetooth.

6. The electric vehicle bus debugging structure according to claim 2, characterized in that: The signal acquisition unit (11) comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a diode D1, a capacitor C1 and an NPN transistor Q1, wherein the resistor R3 and the resistor R6 are connected in series to the base of the NPN transistor Q1, the other end of the resistor R3 is electrically connected to the CXFH-IN port, the resistor R4 is connected in parallel to the capacitor C1, one end of the resistor R4 and the capacitor C1 is grounded, the other ends of the resistor R4 and the capacitor C1 are electrically connected between the resistor R3 and the resistor R6, and the resistor R5 is electrically connected to the NPN transistor Q 1, the other end of the resistor R5 is electrically connected to a 5V power supply, the emitter of the NPN transistor Q1 is grounded, and the pin IN1 of the MCU (3) is electrically connected between the resistor R5 and the collector of the NPN transistor Q1; one end of the resistor R1 is electrically connected to a 5V power supply, one end of the resistor R2 is grounded, the resistor R1 and the resistor R2 are connected in series, the cathode of the diode D1 and the pin IN of the MCU (3) are electrically connected between the resistor R1 and the resistor R2, and the anode of the diode D1 is electrically connected to the HALL-SINGAL-IN port.

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