Brake signal acquisition device

Abstract

The invention discloses a brake signal acquisition device which is applied to a road brake performance test of a vehicle. The brake signal acquisition device adopts brake test equipment to carry out brake performance test; the vehicle comprises a brake pedal switch wire harness and a brake pedal switch sensor. The brake signal acquisition device is provided with an equipment end quick connector; and the brake signal acquisition device is connected with the brake test equipment through the equipment end quick connector (4). By adopting the technical scheme, external sensors are reduced, and the use cost of equipment is reduced; a brake trigger signal is collected through a vehicle brake pedal switch, and the phenomenon that signals are not synchronous when vehicle brake operation is carried out and when external brake signals are collected is avoided; the design of the quick connector does not need to change the existing vehicle wire harness and does not affect the normal function of the vehicle.

Description

Technical Field

[0001] The present invention belongs to the technical field of the production and manufacturing process of transportation vehicles, and relates to the detection technology of an automotive braking system. More specifically, the present invention relates to a braking signal acquisition device. Background Art

[0002] During the road braking performance test, it is necessary to collect the braking trigger signal in real time, record it simultaneously with other vehicle data in real time, and save it as a data packet.

[0003] However, the acquisition of braking data in the prior art has the following problems and defects:

[0004] 1. It is necessary to externally connect a sensor, increasing the equipment usage cost;

[0005] 2. There may be an out-of-sync phenomenon between vehicle braking operation and external braking signal acquisition.

[0006] Using keywords such as "braking signal; acquisition; device; brake pedal; switch" to search the existing publicly available technical literature, the following search results are obtained:

[0007] 1. Chinese patent document: "Control Method, Device, Redundancy Setting System and Vehicle for Collecting Braking Signals", patent (application) number: 202110883013.8; the technical solution recorded therein is:

[0008] "Control Method, Device, Redundancy Setting System and Vehicle for Collecting Braking Signals, wherein the braking control method includes: detecting the brake pedal through a displacement sensor in the electric power assisted braking system on the vehicle; generating a brake switch signal when a preset type of displacement of the brake pedal is detected; in response to the brake switch signal, controlling the brake light on the vehicle to light up, and performing a logical judgment on the brake switch signal to execute the corresponding braking control logic";

[0009] The technical effect recorded therein is:

[0010] "It is convenient to improve the driving safety of the vehicle."

[0011] 2. Chinese patent document: "Braking Signal Conversion Device and Its Method, Automobile and Controller", patent (application) number: 202011577889.1; the technical solution recorded therein is:

[0012] "The braking signal conversion device includes: a controller configured to receive an analog braking signal output by an electronic braking pedal module of an automobile and output a control signal after receiving the analog braking signal, wherein the analog braking signal contains the opening information of the braking pedal; and a signal conversion module configured to send a digital braking signal to a power control unit of the automobile after receiving the control signal".

[0013] The recorded technical effect is:

[0014] "The purpose of converting the analog braking signal into a digital braking signal is achieved".

[0015] However, neither the technical solution recorded in the above technical literature nor the related technical solutions publicly applied in the prior art can solve the problems and defects of "high equipment usage cost" and "signal asynchronization" existing in the prior art. Summary of the Invention

[0016] The present invention provides a braking signal acquisition device, the purpose of which is to solve the problems of high equipment usage cost and asynchronous acquisition signals.

[0017] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0018] The braking signal acquisition device of the present invention is applied to the road braking performance test of a vehicle; the braking signal acquisition device uses a braking test device to perform the braking performance test; the vehicle includes a braking pedal switch wire harness and a braking pedal switch sensor; the braking signal acquisition device is provided with a device-side quick connector; the braking signal acquisition device is connected to the braking test device through the device-side quick connector.

[0019] The device-side quick connector is a Lemo 0B 3PIN plug, and its output end is connected to the 1 / 3PIN of the braking test device.

[0020] The braking signal acquisition device is provided with a vehicle-side wire harness quick connector. The vehicle-side wire harness quick connector adopts a plug structure and forms a fit with the jack of the braking pedal switch wire harness.

[0021] The braking signal acquisition device is provided with a vehicle-side sensor quick connector. The vehicle-side sensor quick connector adopts a jack structure and forms a fit with the plug of the braking pedal switch sensor.

[0022] The braking signal acquisition device is provided with a relay. The coil voltage of the relay is 12V or 5V corresponding to the vehicle to be tested.

[0023] The input end of the relay is in parallel with the normally closed contact connecting the braking pedal sensor.

[0024] The relay switch described above is installed on the brake pedal, and the input terminal of the relay is in a non-energized state.

[0025] By adopting the above technical solutions, the present invention reduces external sensors and lowers the equipment usage cost; it collects the braking trigger signal through the vehicle brake pedal switch to solve the problem of signal asynchronization that may occur during vehicle braking operations and when collecting external braking signals; the quick connector design eliminates the need to change the existing vehicle wiring harness and does not affect the normal functions of the vehicle. Brief Description of the Drawings

[0026] The content shown in the drawings and the markings in the figures are briefly described as follows:

[0027] Figure 1 is a schematic structural diagram of the present invention.

[0028] The markings in the figure are:

[0029] 1. Vehicle-end wire harness quick connector, 2. Vehicle-end sensor quick connector, 3. Relay, 4. Equipment-end quick connector, 5. Braking signal acquisition device. Detailed Embodiments

[0030] The following further details the specific embodiments of the present invention with reference to the drawings and descriptions of the embodiments to help those skilled in the art have a more complete, accurate, and in-depth understanding of the inventive concept and technical solutions of the present invention.

[0031] As Figure 1 The structure of the present invention as expressed is a braking signal acquisition device applied to the road braking performance test of a vehicle; the braking signal acquisition device uses a braking test equipment to perform the braking performance test; the vehicle includes a brake pedal switch wire harness and a brake pedal switch sensor.

[0032] To solve the problems existing in the prior art and overcome its defects, and to achieve the invention purpose of reducing the high equipment usage cost and solving the problem of signal asynchronization in signal acquisition, the technical solutions adopted by the present invention are as follows:

[0033] As Figure 1 shown, the braking signal acquisition device of the present invention is provided with an equipment-end quick connector 4; the braking signal acquisition device 5 is connected to the braking test equipment through the equipment-end quick connector 4.

[0034] The present invention utilizes the electrical principle of a brake switch (energized when depressed, de-energized when released) and the relay principle (closed when energized, opened when de-energized) to achieve the acquisition of the brake trigger signal of the data acquisition system. Its technical effects are as follows: addressing the problems and deficiencies of the prior art, reducing external sensors, and lowering the equipment usage cost; collecting the brake trigger signal through the vehicle brake pedal switch to solve the phenomenon of signal asynchrony that may occur during vehicle braking operations and external brake signal acquisition; with a quick connector design, there is no need to change the existing vehicle wiring harness, and the normal functions of the vehicle are not affected.

[0035] The specific settings are as follows:

[0036] The quick connector 4 at the device end is a Lemo 0B 3PIN plug, and its output end is connected to the 1 / 3PIN of the brake test equipment.

[0037] The brake signal acquisition device 5 is provided with a vehicle-end wiring harness quick connector 1.

[0038] The vehicle-end wiring harness quick connector 1 adopts a plug structure and forms a mating with the socket of the brake pedal switch wiring harness.

[0039] That is: the vehicle-end wiring harness quick connector 1 is a male head, with the same pin definition as the brake pedal switch sensor of the A00 project vehicle model;

[0040] The brake signal acquisition device 5 is provided with a vehicle-end sensor quick connector 2.

[0041] The vehicle-end sensor quick connector 2 adopts a socket structure and forms a mating with the plug of the brake pedal switch sensor.

[0042] The vehicle-end sensor quick connector 2 is a female head, with the same pin definition as the brake pedal switch wiring harness of the A00 project vehicle model.

[0043] The brake signal acquisition device 5 is provided with a relay 3.

[0044] The coil voltage of the relay 3 adopts 12V or 5V corresponding to the vehicle under test.

[0045] The relay 3 is a 12V or 5V relay, with the same voltage as the vehicle.

[0046] The input end of the relay 3 is in a parallel state with the normally closed contact connecting the brake pedal sensor.

[0047] The switch of the relay 3 is installed on the brake pedal, and the input terminal of the relay 3 is in a non-energized state.

[0048] Since the present invention utilizes the vehicle's own sensors, it reduces external sensors and lowers the equipment usage cost;

[0049] Since the braking signal acquisition device acquires the braking trigger signal through the vehicle braking pedal switch, it solves the problem of possible asynchronism when performing vehicle braking operations and when acquiring external braking signals.

[0050] The present invention adopts a quick connector design, which does not require changing the original vehicle wiring harness, does not affect the normal functions of the original vehicle, and can accurately reflect the test results.

[0051] The present invention has been described exemplarily above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A braking signal acquisition device is applied to the road braking performance test of a vehicle; the braking signal acquisition device uses a braking test equipment to perform the braking performance test; the vehicle includes a brake pedal switch wire harness and a brake pedal switch sensor; characterized in that: The described braking signal acquisition device (5) is provided with a device-side quick connector (4); the braking signal acquisition device (5) is connected to the braking test equipment through the device-side quick connector (4).

2. The braking signal acquisition device according to claim 1, characterized in that: The device-side quick connector (4) is a Lemo 0B 3PIN plug, and its output end is connected to the 1 / 3PIN of the braking test equipment.

3. The braking signal acquisition device according to claim 1, characterized in that: The described braking signal acquisition device (5) is provided with a vehicle-side wiring harness quick connector (1).

4. The braking signal acquisition device according to claim 3, wherein: The vehicle-side wiring harness quick connector (1) adopts a plug structure and forms a fit with the jack of the braking pedal switch wiring harness.

5. The braking signal acquisition device according to claim 1, characterized in that: The described braking signal acquisition device (5) is provided with a vehicle-side sensor quick connector (2).

6. The braking signal acquisition device according to claim 5, characterized in that: The vehicle-side sensor quick connector (2) adopts a jack structure and forms a fit with the plug of the braking pedal switch sensor.

7. The braking signal acquisition device according to claim 1, characterized in that: The described braking signal acquisition device (5) is provided with a relay (3).

8. The braking signal acquisition device according to claim 7, characterized in that: The coil voltage of the relay (3) is 12V or 5V corresponding to the vehicle under test.

9. The braking signal acquisition device according to claim 7, characterized in that: The input end of the relay (3) is in parallel with the normally closed contact connecting the braking pedal sensor.

10. The braking signal acquisition device according to claim 9, characterized in that: The switch of the relay (3) is installed on the braking pedal, and the input terminal of the relay (3) is in a non-energized state.

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