CN210941641U - Steering wheel button analogue means - Google Patents
Steering wheel button analogue means Download PDFInfo
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- CN210941641U CN210941641U CN201921601264.7U CN201921601264U CN210941641U CN 210941641 U CN210941641 U CN 210941641U CN 201921601264 U CN201921601264 U CN 201921601264U CN 210941641 U CN210941641 U CN 210941641U
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Abstract
The utility model discloses a steering wheel button analogue means, including power module, CAN communication module, microprocessor, dab button module, adjustable resistance module, instrument interface, dab button module and be connected to microprocessor or instrument interface on, adjustable resistance module's resistance CAN be adjusted and input on the instrument, microprocessor CAN gather button module's information and convert CAN signal transmission into and give the instrument, CAN communication module is responsible for the communication of microprocessor and instrument, power module is responsible for supplying power for entire system. The utility model discloses can simulate most car steering wheel button function on the market, can satisfy the functional test demand of the relevant steering wheel button of combination meter.
Description
Technical Field
The utility model relates to an automobile combination meter tests technical field, involves the function test device of combination meter relevant steering wheel button.
Background
At present, the signal types of automobile steering wheel keys are more and more, and the automobile steering wheel keys have resistance signal types, CAN signal types and level signal types, so that more devices are needed when the functions of the steering wheel keys of an instrument are tested, and the automobile steering wheel keys lack portability and adaptability. It is necessary to develop a simulation device compatible with various types of steering wheel keys.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steering wheel button analogue means can simulate out the function of most steering wheel button on the market, can solve the problem that current steering wheel button function test device lacks portability and adaptability.
In order to realize the purpose, the technical scheme of the utility model is that:
the utility model provides a steering wheel button analogue means, includes power module, microprocessor, CAN communication module, dabs button module, adjustable resistance module, instrument interface, power module supply power for entire system, microprocessor communicate and gather button information and resistance value through CAN bus and instrument, CAN communication module connect microprocessor and communicate with the instrument through this module, dabs button module and be used for simulating level signal button and CAN signal button on the actual steering wheel, adjustable resistance module simulation resistance signal button on the actual steering wheel, the instrument interface be used for being connected to the instrument of test on.
In the steering wheel key simulation device, the power supply module has the same working voltage as the instrument, and the working voltage of the instrument is reduced to 13.5V to 3.3V by the LDO chip to supply power to the system.
In the steering wheel key simulation device, the microprocessor adopts the STM32F103C8T6 chip to collect key level signals and resistance value information and communicate with the instrument.
In the steering wheel key simulation device, the CAN communication module adopts a standard CAN communication chip and is responsible for data communication between the microprocessor and the instrument.
In the steering wheel key simulation device, the light touch key module is composed of 18 light touch self-locking-free keys and simulates level signal keys on a steering wheel of an actual vehicle.
In the steering wheel key simulation device, the adjustable resistor module consists of 2 paths of resistor strings and the light touch key, each resistor string consists of 4 adjustable resistors connected in series, each connecting point is connected to one end of the light touch key, and the other end of the light touch key can be connected to an instrument and a microprocessor to simulate a resistor signal key on a steering wheel of an actual vehicle.
In the steering wheel key simulation device, the instrument interface is matched with the tested combination instrument.
The utility model discloses a modular design scheme has portability, advantage that adaptability is strong. The utility model discloses can simulate most car steering wheel button on the market, can satisfy the functional test demand of the relevant steering wheel button of combination meter.
Drawings
Fig. 1 is a circuit structure diagram of the steering wheel key simulation device of the present invention.
Fig. 2 is a working schematic diagram of the steering wheel key simulation device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific operational schematic diagrams described herein are merely illustrative of the present invention and are not intended to limit the present invention.
Please refer to fig. 1 and 2, a steering wheel key simulation apparatus includes a power module 1, a microprocessor 2, a CAN communication module 3, a light touch key module 4, an adjustable resistance module 5, and an instrument interface 6, wherein the microprocessor (2) communicates with an instrument through a CAN bus and collects key information and resistance values, the CAN communication module (3) is connected with the microprocessor (2) and communicates with the instrument through the module, the light touch key module (4) is used for simulating a level signal key on an actual steering wheel, the adjustable resistance module (5) simulates resistance input on the actual steering wheel, and the instrument interface (6) is used for connecting to an instrument for testing.
The power module 1 is the same as the working voltage of the instrument, the working voltage of the instrument is reduced to 13.5V to 3.3V through the LDO chip LM1117 to supply power to a system, and a fuse is added to protect the instrument when the power is supplied to the instrument.
The microprocessor 2 adopts a minimum system of STM32F103C8T6 chips, CAN collect the switch value of the light touch key and the resistance value in the resistance module to carry out AD sampling and convert the switch value into a digital value, and communicates with the instrument through a CAN bus communication protocol.
The CAN communication module 3 adopts a TJA1042T chip and a peripheral circuit thereof to realize the communication between the microprocessor and the instrument.
The light touch key module 4 is composed of 18 light touch self-locking-free keys, each key is anti-shake through hardware, CAN be directly connected to a corresponding control pin of the instrument, simulates level signal keys on an actual steering wheel, and CAN also be transmitted to the instrument through a CAN bus after being collected by the microprocessor, and the CAN signal keys on the actual steering wheel are simulated.
The adjustable resistance module 5 is composed of 2 paths of resistance strings and light touch keys, each string of resistance is composed of 4 adjustable resistances which are connected in series, one end of one light touch key is connected to each connection point, the other end of the light touch key CAN be directly connected to a corresponding control pin of the instrument, and signals CAN be sent to the instrument through a CAN bus after being collected by the micro-processor to simulate resistance signal keys on an actual steering wheel.
The instrument interface 6 is an instrument interface and is matched with a tested instrument.
Claims (5)
1. The utility model provides a steering wheel button analogue means, characterized by includes power module (1), microprocessor (2), CAN communication module (3), dabs button module (4), adjustable resistance module (5), instrument interface (6), power module (1) supply power for entire system, microprocessor (2) communicate and gather button information and resistance value through the CAN bus with the instrument, CAN communication module (3) connect microprocessor (2) and communicate through this module and instrument, dabbing button module (4) be used for simulating the ordinary switch button on the actual steering wheel, adjustable resistance module (5) the resistance input on the actual steering wheel of simulation, instrument interface (6) be used for being connected to the instrument of test on.
2. The steering wheel key simulation device of claim 1, wherein: the power module (1) has the same working voltage as the instrument, and the test condition is simplified.
3. The steering wheel key simulation device of claim 1, wherein: after the MCU collects the level key signal on the device, the level key signal CAN be sent to the instrument through the CAN communication module (3).
4. The steering wheel key simulation device of claim 1, wherein: the adjustable resistance module (5) is formed by connecting a plurality of adjustable resistors in series, and each connecting point is connected to the instrument through a key, so that resistance signal keys on an actual steering wheel are simulated, and the resistance value can be adjusted.
5. The steering wheel key simulation device of claim 1, wherein: the instrument interface (6) is matched with the tested combination instrument interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921601264.7U CN210941641U (en) | 2019-09-26 | 2019-09-26 | Steering wheel button analogue means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921601264.7U CN210941641U (en) | 2019-09-26 | 2019-09-26 | Steering wheel button analogue means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210941641U true CN210941641U (en) | 2020-07-07 |
Family
ID=71378064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921601264.7U Active CN210941641U (en) | 2019-09-26 | 2019-09-26 | Steering wheel button analogue means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210941641U (en) |
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2019
- 2019-09-26 CN CN201921601264.7U patent/CN210941641U/en active Active
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