Vehicle speed control device for various vehicle types

Abstract

The utility model discloses a vehicle speed control device for various vehicle types, and belongs to the field of vehicle control. The device comprises a DC / DC module, a controller module, a vehicle speed selection module, a CAN communication module and a vehicle control system, wherein the DC / DC module is respectively connected with the controller module and the vehicle speed selection module; the vehicle speed selection module is connected with the controller module; and the CAN communication module is respectively connected with the controller module and the vehicle control system. According to the utility model, the problems that various CAN communication messages need to be known, computer operation needs to be used and the test is inconvenient when various vehicle types are controlled to change the vehicle speed are solved, tools required for sending the vehicle speed are reduced, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of vehicle control, and specifically relates to a vehicle speed control device for various vehicle types. Background Art

[0002] The existing different products for controlling vehicle speed require familiarity with a variety of different CAN communication messages, and need to be operated by computer all the time, which is not convenient for ordinary workers to test. Therefore, a convenient device is needed to realize the speed change of various different models for testing.

[0003] The comparative document (CN102033141A) discloses a test system based on CAN bus automobile instrument, including a single chip microcomputer and a CAN transceiver, the single chip microcomputer includes a control module, a sending module and a timing module, the storage module, the sending module and the timing module are electrically connected to the control module respectively, the sending module is connected to the CAN bus automobile instrument through the CAN transceiver, and a test method is also provided, the test system is initialized; the control module is based on the internally set program: a. Control the sending module to send speed messages to the CAN bus automobile instrument according to the set cycle, b. Control the timing module to time and / or count; According to the above test, the working condition of the CAN bus automobile instrument is judged. The above technical scheme shortens the test cycle of the CAN bus automobile combination instrument by simulating the sending of continuous or even complex communication messages to the CAN bus by using the test system, and effectively reduces the test cost of the instrument.

[0004] The above-mentioned comparative document controls the vehicle speed by sending speed messages, but it still relies on the controller program to edit the speed message related information, requires technicians to understand a variety of CAN communication messages, and does not involve the selection of different speeds for different products of different customers. To this end, the utility model proposes a vehicle speed control device for multiple vehicle models. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and proposes a vehicle speed control device for multiple vehicle models to achieve the following purposes: to solve the problem that controlling the speed change of multiple different vehicle models requires understanding of multiple CAN communication messages, requires the use of computers, and is inconvenient to test, so as to reduce the tools required to send the vehicle speed and improve the test efficiency.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a vehicle speed control device for multiple vehicle types, the device includes a DC / DC module, a controller module, a vehicle speed selection module, a CAN communication module, and a vehicle control system, wherein: the DC / DC module is respectively connected to the controller module and the vehicle speed selection module; the vehicle speed selection module is connected to the controller module; the CAN communication module is respectively connected to the controller module and the vehicle control system.

[0007] Preferably, the controller module includes an MCU, a reset circuit, and a crystal oscillator circuit, wherein the reset circuit and the crystal oscillator circuit are respectively connected to the MCU, and the MCU is respectively connected to the DC / DC module and the vehicle speed selection module.

[0008] Preferably, the vehicle speed selection module is a serial port touch screen.

[0009] Preferably, the vehicle speed selection module includes a first selection unit, a second selection unit, a third selection unit, and a memory, wherein: the first selection unit, the second selection unit, and the third selection unit are respectively connected to the DC / DC module; the first selection unit is connected to the second selection unit for selecting a customer; the second selection unit is connected to the third selection unit for selecting a product model corresponding to the customer; the third selection unit is connected to the controller module for selecting the speed corresponding to the product model; the memory is respectively connected to the first selection unit, the second selection unit, and the third selection unit for storing customer, product model, and speed information.

[0010] Preferably, the first selection unit, the second selection unit and the third selection unit all include a multiple-choice data selector, wherein: the data selector input end of the first selection unit is different customers, and its output end outputs the customer selection result to the second selection unit; the second selection unit is provided with a multiple-choice data selector corresponding to the number of customers, and the multiple-choice data selector corresponding to the second selection unit is selected according to the customer selection result output by the first selection unit. At this time, the input end of the multiple-choice data selector is different product models corresponding to the customer, and its output end outputs the product model selection result to the second selection unit; the third selection unit is provided with a multiple-choice data selector corresponding to the number of product models, and the multiple-choice data selector corresponding to the third selection unit is selected according to the product model result output by the second selection unit. At this time, the input end of the multiple-choice data selector is different vehicle speeds corresponding to the product model, and its output end outputs the vehicle speed selection result to the controller module.

[0011] Preferably, the vehicle speed selection module includes a reader / writer and a display, wherein the reader / writer is connected to the display and the controller module unit respectively, and is used to read the software version number from the vehicle control system through the controller module, and send the software version number to the display for display.

[0012] Preferably, the CAN communication module includes a CAN conversion chip, and the CAN conversion chip is connected to the controller module and the vehicle control system respectively, so as to realize CAN communication between the controller module and the vehicle control system.

[0013] Preferably, the vehicle control system includes an electric power steering system EPS, and the electric power steering system EPS is connected to the CAN communication module.

[0014] The technical effects of the utility model are as follows: (1) the utility model has strong versatility and can control the speed of a variety of different products; (2) the operation is simple, and the sending of the required speed message and the reading of the version number can be controlled by simply turning on the power and clicking the serial port screen button. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a vehicle speed control device for various vehicle types according to an embodiment of the utility model. DETAILED DESCRIPTION

[0016] The following is a further detailed description of the specific implementation of the utility model through the description of the embodiments with reference to the accompanying drawings, with the purpose of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the utility model and to facilitate its implementation. In order to make the technical solution of the utility model clearer, the utility model is explained through the following embodiments:

[0017] A vehicle speed control device for various vehicle types, comprising a DC / DC module, a controller module, a vehicle speed selection module, a CAN communication module, and a vehicle control system, wherein: the DC / DC module is connected to the controller module and the vehicle speed selection module respectively; the vehicle speed selection module is connected to the controller module; and the CAN communication module is connected to the controller module and the vehicle control system respectively. Figure 1 The figure shows the structure diagram of the vehicle speed control device for various vehicle models of the embodiment of the utility model, wherein the input of the DC / DC module is a DC 12V voltage, the vehicle speed selection module is a serial port touch screen, and the DC / DC module provides a DC 5V power supply voltage for the vehicle speed selection module. In this embodiment, the vehicle speed is selected by the user touching the touch screen, and the vehicle speed is sent to the controller module through the serial port, which is simple to operate.

[0018] The vehicle speed selection module of this embodiment includes a first selection unit, a second selection unit, a third selection unit, and a memory. Specifically, this embodiment integrates the first selection unit, the second selection unit, the third selection unit, and the memory in the serial port touch screen, wherein: the first selection unit, the second selection unit, and the third selection unit are respectively connected to the DC / DC module; the first selection unit is connected to the second selection unit for selecting a customer; the second selection unit is connected to the third selection unit for selecting a product model corresponding to the customer; the third selection unit is connected to the controller module for selecting the speed corresponding to the product model; the memory is respectively connected to the first selection unit, the second selection unit, and the third selection unit for storing customer, product model, and speed information. For example: the user selects customer 1 from many customers through the first selection unit and wants to test the product of the customer; then the user selects product 1.1 from multiple product models of customer 1 through the second selection unit for testing; finally, the user selects a vehicle speed from many vehicle speed information of product 1.1 through the third selection unit as the test vehicle speed and sends it to the controller module for subsequent processing. Based on the above vehicle speed selection module, when the user does not understand a variety of CAN communication messages, he can also select different vehicle speeds for different products of different customers for testing by touching the touch screen. There is no need for cumbersome message editing or computer operation, which makes the process simpler and improves the test efficiency. In summary, the first selection unit, the second selection unit, and the third selection unit of this embodiment can be pre-implemented through an algorithm program and integrated into a chip mounted on the touch screen, or can be implemented through a related digital circuit hardware structure. This embodiment provides an implementation scheme of a digital circuit hardware structure, as shown below:

[0019] The first selection unit, the second selection unit and the third selection unit of this embodiment all include a multiple-choice data selector, wherein: the data selector input end of the first selection unit is different customers, and its output end outputs the customer selection result to the second selection unit; the second selection unit is provided with a multiple-choice data selector corresponding to the number of customers, and the multiple-choice data selector corresponding to the second selection unit is selected according to the customer selection result output by the first selection unit. At this time, the input end of the multiple-choice data selector is different product models corresponding to the customers, and its output end outputs the product model selection result to the second selection unit; the third selection unit is provided with a multiple-choice data selector corresponding to the number of product models, and the multiple-choice data selector corresponding to the third selection unit is selected according to the product model result output by the second selection unit. At this time, the input end of the multiple-choice data selector is different vehicle speeds corresponding to the product model, and its output end outputs the vehicle speed selection result to the controller module.

[0020] Furthermore, during vehicle testing, technicians often need to check the software version number of the vehicle control system. To facilitate observation and improve testing efficiency, the vehicle speed selection module of this embodiment also includes a reader and a display (since the vehicle speed selection module of this embodiment is a touch screen, the display can directly use the touch screen display, reducing accessories and reducing costs), wherein the reader is connected to the display and the controller module unit respectively, and is used to send a software version number reading command to the controller module. The controller module packages it into a message and sends it to the vehicle control system for reading the software version number. After the reading is completed, the software version number will be sent to the display for display.

[0021] Specifically, the controller module of this embodiment includes an MCU, a reset circuit, and a crystal oscillator circuit, wherein the reset circuit and the crystal oscillator circuit are respectively connected to the MCU, and the MCU is respectively connected to the DC / DC module and the vehicle speed selection module. In this embodiment, the DC / DC module provides a DC 3.3V voltage to the MCU, and the MCU can be a single-chip microcomputer, which is used to convert the vehicle speed information selected by the vehicle speed selection module and the vehicle control system software version number reading command into a corresponding message, and then periodically sends the corresponding message to control the vehicle speed change and read the version number; the reset circuit is used to initialize the MCU; and the crystal oscillator circuit is used to provide the clock signal required by the MCU.

[0022] The CAN communication module of this embodiment includes a CAN conversion chip, which is respectively connected to the controller module and the vehicle control system, and is used to realize CAN communication between the controller module and the vehicle control system, mainly forwarding the CAN message output by the MCU to the vehicle control system to facilitate the execution of the test.

[0023] The vehicle control system of this embodiment includes an electric power steering system EPS, and the electric power steering system EPS is connected to the CAN communication module. The test of the electric power steering system EPS is closely related to the vehicle speed. The device of this embodiment can make the test of the electric power steering system EPS more convenient and does not require computer operation, thereby simplifying the process, reducing test tools, reducing costs, and improving test efficiency.

[0024] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A vehicle speed control device for various vehicle types, characterized in that: The device comprises a DC / DC module, a controller module, a vehicle speed selection module, a CAN communication module, and a vehicle control system, wherein: the DC / DC module is connected to the controller module and the vehicle speed selection module respectively; the vehicle speed selection module is connected to the controller module; the CAN communication module is connected to the controller module and the vehicle control system respectively; The vehicle speed selection module includes a first selection unit, a second selection unit, a third selection unit, and a memory, wherein: the first selection unit, the second selection unit, and the third selection unit are respectively connected to the DC / DC module; the first selection unit is connected to the second selection unit for selecting a customer; the second selection unit is connected to the third selection unit for selecting a product model corresponding to the customer; the third selection unit is connected to the controller module for selecting a speed corresponding to the product model; the memory is respectively connected to the first selection unit, the second selection unit, and the third selection unit for storing customer, product model, and speed information; The first selection unit, the second selection unit, and the third selection unit all include a multiple-choice data selector, wherein: the data selector input end of the first selection unit is different customers, and its output end outputs the customer selection result to the second selection unit; the second selection unit is provided with a multiple-choice data selector corresponding to the number of customers, and the multiple-choice data selector corresponding to the second selection unit is selected according to the customer selection result output by the first selection unit. At this time, the input end of the multiple-choice data selector is different product models corresponding to the customer, and its output end outputs the product model selection result to the second selection unit; the third selection unit is provided with a multiple-choice data selector corresponding to the number of product models, and the multiple-choice data selector corresponding to the third selection unit is selected according to the product model result output by the second selection unit. At this time, the input end of the multiple-choice data selector is different vehicle speeds corresponding to the product model, and its output end outputs the vehicle speed selection result to the controller module.

2. The vehicle speed control device for various vehicle types according to claim 1, characterized in that: The controller module includes an MCU, a reset circuit, and a crystal oscillator circuit, wherein the reset circuit and the crystal oscillator circuit are respectively connected to the MCU, and the MCU is respectively connected to the DC / DC module and the vehicle speed selection module.

3. The vehicle speed control device for various vehicle types according to claim 1, characterized in that: The vehicle speed selection module is a serial port touch screen.

4. A vehicle speed control device for multiple vehicle types according to claim 1 or 3, characterized in that: The vehicle speed selection module includes a reader and a display, wherein the reader is connected to the display and the controller module unit respectively, and is used to read the software version number from the vehicle control system through the controller module, and send the software version number to the display for display.

5. The vehicle speed control device for various vehicle types according to claim 1, characterized in that: The CAN communication module includes a CAN conversion chip, which is connected to the controller module and the vehicle control system respectively, and is used to realize CAN communication between the controller module and the vehicle control system.

6. The vehicle speed control device for various vehicle types according to claim 1, characterized in that: The vehicle control system includes an electric power steering system EPS, and the electric power steering system EPS is connected to the CAN communication module.

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