Data interaction device of vehicle-mounted controller

Abstract

The utility model provides a data interaction device for a vehicle-mounted controller. The data interaction device comprises a power supply processing circuit, a main control circuit, a communication interaction circuit, a flash interface circuit, a channel selection circuit and a display circuit. Through the main control chip, the function of data interaction between the upper computer and any one or more of the multiple channels and the peripheral controller is realized. The defect that traditional one-to-one data interaction is time-consuming and labor-consuming is overcome, the testing efficiency is improved, and improvement of the overall efficiency is facilitated. During use, a tester can connect a plurality of controllers at the same time, so that the manpower and financial costs are effectively saved. In addition, the data interaction device for the vehicle-mounted controller supports a baud rate self-adaptive function, simulates the whole vehicle environment, saves the whole vehicle test cost of wiring harnesses and the like, and greatly improves the offline test efficiency of the controller.

Description

Technical Field

[0001] The utility model belongs to the field of vehicle-mounted controller interaction, and in particular relates to a data interaction device for a vehicle-mounted controller. Background Art

[0002] With the advancement of automotive electronics technology, the functional complexity of product designs is increasing. The communication between various vehicle domain controllers is increasingly demanding high throughput and reliability. At the same time, the resulting time and labor costs are a burden on frontline developers, exacerbating business pressures.

[0003] Existing technologies lack multi-channel data exchange devices for onboard controllers. When testing controllers, testers typically interact with a single device using a single controller, manually disconnecting, configuring channel parameters, and then reconnecting each time. This approach prevents a single engineer from efficiently and reliably interacting with multiple controllers simultaneously using a single communication device, resulting in low testing efficiency and overall work efficiency. Summary of the Invention

[0004] The purpose of the utility model is to provide a data interaction device for a vehicle-mounted controller, so as to solve the problem in the prior art that the testing efficiency is low when testing the vehicle-mounted controller, thereby affecting the overall work efficiency.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A data interaction device for a vehicle-mounted controller comprises a power processing circuit, a main control circuit, a communication interaction circuit, a flashing interface circuit, a channel selection circuit and a display circuit.

[0007] The input end of the power processing circuit is connected to the external AC power supply; the output end of the power processing circuit is connected to the main control circuit, the communication interaction circuit, the flashing interface circuit, the channel selection circuit and the display circuit respectively.

[0008] The main control circuit is connected to the communication interaction circuit, the flash writing interface circuit, the channel selection circuit and the display circuit respectively.

[0009] The utility model also has the following features:

[0010] Furthermore, the input end of the power processing circuit is connected to the output end of the rectifier via a connector;

[0011] The rectifier input end is connected to an external AC power source.

[0012] Furthermore, the power processing circuit includes capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, diode D1, diode D2, light-emitting diode D3, inductor L1 and power chip U1.

[0013] The anode of the diode D1 is connected to the external AC power supply and one end of the capacitor C1 as the input end of the power processing circuit; the other end of the capacitor C1 is grounded.

[0014] The cathode of the diode D1, the second end of the power chip U1 and one end of the resistor R1 are connected together; the other end of the resistor R1, the third end of the power chip U1 and one end of the resistor R2 are connected together; the other end of the resistor R2 and one end of the resistor R3 are grounded together; the other end of the resistor R3 is connected to the fourth end of the power chip U1.

[0015] The eighth terminal of the power chip U1, one end of the capacitor C5, the cathode of the diode D2 and one end of the inductor L1 are connected together; the anode of the diode D2, the seventh terminal of the power chip U1 and one end of the capacitor C4 are connected together.

[0016] The other end of the capacitor C5 is connected to the first end of the power chip U1.

[0017] The other end of the capacitor C4, the other end of the inductor L1, one end of the resistor R7 and one end of the resistor R5 are connected together, and the connection point serves as the output end of the power processing circuit.

[0018] The other end of the resistor R7 is connected to the anode of the light emitting diode D3, and the cathode of the diode D3 is grounded.

[0019] The other end of the resistor R5, one end of the resistor R6 and the fifth end of the power chip U1 are connected together, and the other end of the resistor R6 is grounded.

[0020] The sixth terminal of the power chip U1, one end of the resistor R4 and one end of the capacitor C3 are commonly connected; the other end of the resistor R4 is connected to one end of the capacitor C2; the other ends of the capacitors C2 and C3 are commonly grounded.

[0021] Furthermore, the communication interaction circuit includes a communication chip U2, an ESD diode, and a common-mode inductor L2.

[0022] The main control circuit includes a main control chip U3.

[0023] The channel selection circuit includes a plurality of switch chips U4, interfaces J2 corresponding to the plurality of switch chips U4 on a one-to-one basis, and controllers corresponding to the plurality of switch chips U4 on a one-to-one basis.

[0024] A first terminal of the ESD diode is grounded.

[0025] The second end of the ESD diode is connected to the first end of the common mode inductor L2 , and the connection point is connected to the third end of the corresponding switch chip U4 .

[0026] The third end of the ESD diode is connected to the fourth end of the common-mode inductor L2 , and the connection point is connected to the fourth end of the corresponding switch chip U4 .

[0027] The second end of the common-mode inductor L2 is connected to the seventh end of the communication chip U2; the third end of the common-mode inductor L2 is connected to the sixth end of the communication chip U2.

[0028] The first end and the fourth end of the communication chip U2 are connected to the first end and the second end of the main control chip U3 respectively.

[0029] The third terminal of the communication chip U2 is connected to the output terminal of the power module circuit.

[0030] The second terminal and the eighth terminal of the communication chip U2 are grounded.

[0031] The fifth terminal of the communication chip U2 is suspended.

[0032] The third terminal of the main control chip U3 is connected to the tenth terminal of the corresponding switch chip U4.

[0033] The fourth terminal of the main control chip U3 is connected to the second terminal of the corresponding switch chip U4.

[0034] The sixth terminal and the seventh terminal of the switch chip U4 are respectively connected to the corresponding interface J2; the other end of each interface J2 is connected to the corresponding controller.

[0035] The first end of the switch chip U4 is connected to the output end of the power supply circuit.

[0036] The fifth terminal of the switch chip U3 is connected to the output terminal of the power supply circuit.

[0037] The fifth terminal of the switch chip U4 is grounded.

[0038] The eighth and ninth terminals of the switch chip U4 are suspended.

[0039] Compared with the prior art, the present invention has the following technical effects:

[0040] (I) This utility model's data exchange device for an on-board controller implements the functionality of a single-channel communication signal input and multiple-channel communication signal output. Through the main control chip, data exchange between the host computer and any one or more of the multiple channels and peripheral controllers is achieved. This overcomes the time-consuming and labor-intensive drawbacks of traditional one-to-one data exchange, improves testing efficiency, and contributes to overall efficiency improvements.

[0041] (II) When using the data exchange device for vehicle-mounted controllers, testers can connect to multiple controllers simultaneously, effectively saving manpower and financial costs. Furthermore, the data exchange device for vehicle-mounted controllers supports baud rate adaptation, simulating the entire vehicle environment, saving costs for vehicle testing such as wiring harnesses, and significantly improving the efficiency of controller offline testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the overall structure of the data interaction device for the vehicle-mounted controller of the utility model;

[0043] Figure 2 It is a schematic diagram of the current path of the power processing circuit in the utility model;

[0044] Figure 3 This is a schematic diagram of the power processing circuit in the utility model;

[0045] Figure 4 This is a schematic diagram of the connection relationship among the main control circuit, the communication interaction circuit and the channel selection circuit in the utility model. DETAILED DESCRIPTION

[0046] It should be noted that, unless otherwise specified, all components in the present invention are components known in the prior art. For example, the "rectifier" is a known and commonly used rectifier.

[0047] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made on the basis of the technical solution of this application fall within the scope of protection of the present invention.

[0048] A data interaction device for a vehicle-mounted controller comprises a power processing circuit, a main control circuit, a communication interaction circuit, a flashing interface circuit, a channel selection circuit and a display circuit.

[0049] The input end of the power processing circuit is connected to the external AC power supply; the output end of the power processing circuit is connected to the main control circuit, the communication interaction circuit, the flash interface circuit, the channel selection circuit and the display circuit respectively;

[0050] The main control circuit is connected to the communication interaction circuit, the flashing interface circuit, the channel selection circuit and the display circuit respectively.

[0051] All circuits in this embodiment adopt known conventional circuits. Operators in this field are capable of selecting corresponding circuit modules according to needs and reasonably adjusting the device specifications in the circuit according to actual needs.

[0052] The power processing circuit in this embodiment adopts a conventional power processing circuit. According to conventional knowledge in the field, it is used to convert the external high power supply voltage into a stable and accurate DC low voltage required by other modules and ICs in the controller system through a power chip, and use it as a voltage reference.

[0053] According to conventional knowledge in the art, the main control circuit in this embodiment should include an MCU chip and its minimum system. In this embodiment, it plays the role of the main control chip and is the core control unit of the controller. It receives signals from the host computer or controller through the communication interaction circuit and external communication equipment for processing and control.

[0054] The channel selection circuit in this embodiment adopts a conventional channel selection circuit, which should include a switch chip to realize the free switching of multiple channels and a controller. The MCU chip of the main control circuit has the function of outputting signals to control the switch chip to achieve the function of selecting one or several channels.

[0055] The switch chip of the present invention can also be replaced with other types of chips with switch properties according to conventional selection in the field.

[0056] The display circuit in this embodiment adopts a conventional channel selection circuit, and the selected channel is controlled by the MCU chip output signal. Each channel has an indicator light connected to it. When the channel is selected, the indicator light of the channel is lit.

[0057] The communication interaction circuit in this embodiment should adopt a chip with communication function according to conventional selection, and perform data interaction with the MCU chip in a conventional manner.

[0058] In this embodiment, the main control circuit is divided into multiple communication channels, including one input and multiple outputs. The main control circuit uses conventional methods to send control signals to adjust the status of multiple output channels, thereby realizing the connection and disconnection between the host computer and the multiple channels.

[0059] As a specific implementation method, Figure 2 As shown, the input end of the power processing circuit is connected to the output end of the rectifier through a connector; the input end of the rectifier is connected to the external AC power supply.

[0060] As a specific implementation method, Figure 3As shown, the power processing circuit includes capacitors C1, C2, C3, C4, resistors R1, R2, R3, R4, R5, R6, R7, diode D1, D2, light-emitting diode D3, inductor L1, and power chip U1. The power chip model is TPS54360B-Q1.

[0061] The power processing circuit includes capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, diode D1, diode D2, light-emitting diode D3, inductor L1 and power chip U1;

[0062] The anode of the diode D1 is connected to the external AC power supply and one end of the capacitor C1 as the input end of the power processing circuit; the other end of the capacitor C1 is grounded;

[0063] The cathode of diode D1, the second terminal of power chip U1, and one end of resistor R1 are connected together; the other end of resistor R1, the third terminal of power chip U1, and one end of resistor R2 are connected together; the other end of resistor R2 and one end of resistor R3 are grounded together; the other end of resistor R3 is connected to the fourth terminal of power chip U1;

[0064] The eighth terminal of the power chip U1, one end of the capacitor C5, the cathode of the diode D2 and one end of the inductor L1 are connected together; the anode of the diode D2, the seventh terminal of the power chip U1 and one end of the capacitor C4 are connected together;

[0065] The other end of the capacitor C5 is connected to the first end of the power chip U1;

[0066] The other end of the capacitor C4, the other end of the inductor L1, one end of the resistor R7 and one end of the resistor R5 are connected together, and this connection point serves as the output end of the power processing circuit;

[0067] The other end of the resistor R7 is connected to the positive electrode of the light emitting diode D3, and the negative electrode of the diode D3 is grounded;

[0068] The other end of the resistor R5, one end of the resistor R6 and the fifth end of the power chip U1 are connected together, and the other end of the resistor R6 is grounded;

[0069] The sixth terminal of the power chip U1, one end of the resistor R4 and one end of the capacitor C3 are commonly connected; the other end of the resistor R4 is connected to one end of the capacitor C2; the other ends of the capacitors C2 and C3 are commonly grounded.

[0070] The power processing circuit in this embodiment should meet a wide input voltage range. The DC voltage is connected through an anti-reverse diode and then processed by the power chip U1 to obtain the required system power supply. The FB value can be changed by adjusting the resistance of resistors R5 and R6, thereby changing the output voltage. The output voltage is connected to ground through resistor R7 and light-emitting diode D3, which can be used to visually monitor whether VCC is output.

[0071] As a specific implementation method, Figure 4 As shown, the communication interaction circuit includes a communication chip U2, an ESD diode and a common-mode inductor L2.

[0072] The main control circuit includes a main control chip U3;

[0073] The channel selection circuit includes a plurality of switch chips U4, interfaces J2 corresponding to the plurality of switch chips U4 one-to-one, and controllers corresponding to the plurality of switch chips U4 one-to-one;

[0074] A first terminal of the ESD diode is grounded;

[0075] The second end of the ESD diode is connected to the first end of the common mode inductor L2, and the connection point is connected to the third end of the corresponding switch chip U4;

[0076] The third end of the ESD diode is connected to the fourth end of the common mode inductor L2, and the connection point is connected to the fourth end of the corresponding switch chip U4;

[0077] The second end of the common-mode inductor L2 is connected to the seventh end of the communication chip U2; the third end of the common-mode inductor L2 is connected to the sixth end of the communication chip U2;

[0078] The first terminal and the fourth terminal of the communication chip U2 are connected to the first terminal and the second terminal of the main control chip U3 respectively;

[0079] The third terminal of the communication chip U2 is connected to the output terminal of the power module circuit;

[0080] The second terminal and the eighth terminal of the communication chip U2 are grounded;

[0081] The fifth terminal of the communication chip U2 is left hanging;

[0082] The third terminal of the main control chip U3 is connected to the tenth terminal of its corresponding switch chip U4;

[0083] The fourth terminal of the main control chip U3 is connected to the second terminal of its corresponding switch chip U4;

[0084] The sixth and seventh terminals of the switch chip U4 are connected to their corresponding interfaces J2 respectively; the other terminal of each interface J2 is connected to its corresponding controller;

[0085] The first end of the switch chip U4 is connected to the output end of the power circuit;

[0086] The fifth terminal of the switch chip U3 is connected to the output terminal of the power circuit;

[0087] The fifth terminal of the switch chip U4 is grounded;

[0088] The eighth and ninth terminals of switch chip U4 are left floating. Main control chip U3 interacts with a communication signal through communication chip U2 and a common-mode inductor, and is equipped with a bidirectional ESD diode for protection. Main control chip U3 outputs a chip select signal to switch chip U4. At the same time, a communication signal is input to switch chip U4. The chip select signal from main control chip U3 selects the output channel, thereby connecting to the controller and enabling data exchange between main control chip U3 and the controller.

[0089] When in use, the tester first connects the communication interaction circuit to a connector, and connects several controllers that need to communicate to the data interaction device of the vehicle-mounted controller through the connector, so as to realize communication between the host computer and the controller through the data interaction device of the vehicle-mounted controller of the utility model.

[0090] When the user needs to communicate with one or several controllers, the host computer must first select a channel. The process is as follows: the host computer outputs a control signal to the communication selection module through the main control circuit. The channel that receives the valid control signal is closed, the host computer is connected to the main control circuit, and then data exchange between the host computer and the controller is carried out through the communication interaction circuit.

[0091] In specific application scenarios, the participation methods of the data interaction device of the vehicle controller of the present invention include but are not limited to the following scenarios:

[0092] Host computer testing: In order to fully meet the development and testing needs of the host computer, the communication interaction between the data interaction device of the vehicle controller of the utility model and the host computer can meet the specifications including but not limited to ISO 11898, SAE J1587, J1708 and J1939, and can be observed and calibrated through protocols such as CCP / XCP, and can support test environments such as traditional Bootloader flashing and SOTA upgrades.

[0093] Controller production line: In order to improve the efficiency of controller production line and reduce labor intensity, the data interaction device of the vehicle controller of this utility model can build an automated production line platform by continuously switching multiple controllers and filling related programs in sequence.

[0094] Simulate the vehicle operating environment: The data interaction device of the vehicle controller of this utility model can connect different controllers such as the transmission system, braking system, steering system, and driving system to the adapter board to simulate the complex working conditions of multiple systems of the vehicle working simultaneously and interacting with each other, so as to cooperate with equipment such as HIL test bench.

Claims

1. A data interaction device for a vehicle-mounted controller, characterized in that: It includes power processing circuit, main control circuit, communication interaction circuit, flashing interface circuit, channel selection circuit and display circuit; The input end of the power processing circuit is connected to an external AC power supply; the output end of the power processing circuit is connected to the main control circuit, the communication interaction circuit, the flashing interface circuit, the channel selection circuit and the display circuit respectively; The main control circuit is connected to the communication interaction circuit, the flashing interface circuit, the channel selection circuit and the display circuit respectively.

2. The data interaction device of the vehicle controller according to claim 1, characterized in that: The input end of the power processing circuit is connected to the output end of the rectifier through a connector; The rectifier input terminal is connected to an external AC power source.

3. The data interaction device of the vehicle controller as claimed in claim 1, characterized in that: The power processing circuit includes capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, diode D1, diode D2, light emitting diode D3, inductor L1 and power chip U1; The positive electrode of the diode D1 is connected to the external AC power supply and one end of the capacitor C1 as the input end of the power processing circuit; the other end of the capacitor C1 is grounded; The cathode of the diode D1, the second end of the power chip U1 and one end of the resistor R1 are connected together; the other end of the resistor R1, the third end of the power chip U1 and one end of the resistor R2 are connected together; the other end of the resistor R2 and one end of the resistor R3 are grounded together; the other end of the resistor R3 is connected to the fourth end of the power chip U1; The eighth terminal of the power chip U1, one end of the capacitor C5, the cathode of the diode D2 and one end of the inductor L1 are connected together; the anode of the diode D2, the seventh terminal of the power chip U1 and one end of the capacitor C4 are connected together; The other end of the capacitor C5 is connected to the first end of the power chip U1; The other end of the capacitor C4, the other end of the inductor L1, one end of the resistor R7 and one end of the resistor R5 are connected together, and the connection point serves as the output end of the power processing circuit; The other end of the resistor R7 is connected to the positive electrode of the light emitting diode D3, and the negative electrode of the diode D3 is grounded; The other end of the resistor R5, one end of the resistor R6 and the fifth end of the power chip U1 are connected together, and the other end of the resistor R6 is grounded; The sixth end of the power chip U1, one end of the resistor R4 and one end of the capacitor C3 are connected together; the other end of the resistor R4 is connected to one end of the capacitor C2; the other ends of the capacitors C2 and C3 are grounded together.

4. The data interaction device of the vehicle controller as claimed in claim 1, characterized in that: The communication interaction circuit includes a communication chip U2, an ESD diode, and a common mode inductor L2; The main control circuit includes a main control chip U3; The channel selection circuit includes a plurality of switch chips U4, interfaces J2 corresponding to the plurality of switch chips U4 one by one, and controllers corresponding to the switch chips U4 one by one; The first end of the ESD diode is grounded; The second end of the ESD diode is connected to the first end of the common mode inductor L2, and the connection point is connected to the third end of the corresponding switch chip U4; The third end of the ESD diode is connected to the fourth end of the common mode inductor L2, and the connection point is connected to the fourth end of the corresponding switch chip U4; The second end of the common mode inductor L2 is connected to the seventh end of the communication chip U2; the third end of the common mode inductor L2 is connected to the sixth end of the communication chip U2; The first end and the fourth end of the communication chip U2 are respectively connected to the first end and the second end of the main control chip U3; The third terminal of the communication chip U2 is connected to the output terminal of the power module circuit; The second terminal and the eighth terminal of the communication chip U2 are grounded; The fifth terminal of the communication chip U2 is suspended; The third terminal of the main control chip U3 is connected to the tenth terminal of the corresponding switch chip U4; The fourth end of the main control chip U3 is connected to the second end of the corresponding switch chip U4; The sixth end and the seventh end of the switch chip U4 are respectively connected to the corresponding interface J2; the other end of each interface J2 is connected to the corresponding controller; The first end of the switch chip U4 is connected to the output end of the power supply circuit; The fifth terminal of the switch chip U3 is connected to the output terminal of the power supply circuit; The fifth terminal of the switch chip U4 is grounded; The eighth and ninth terminals of the switch chip U4 are suspended.

Images