Vehicle EBS braking response time test system

Abstract

The utility model relates to the technical field of brake performance testing, in particular to a vehicle EBS brake response time testing system which comprises an electric control spiral line, brake response time testing equipment and a pressure sensor. One end of the electric control spiral line is divided into a first branch and a second branch; the end part of the first branch is connected with an EBS electric control interface of a tractor of a tested vehicle, and the other end of the electric control spiral line is connected with an EBS electric control interface of a trailer of the tested vehicle, or the first branch is kept in an unconnected state, and the other end of the electric control spiral line is connected with the EBS electric control interface of the tractor of the tested vehicle; the end part of the second branch is connected with the brake response time testing equipment; the pressure sensor is installed on a brake chamber test port of a trailer of the tested vehicle, and the pressure sensor is connected with the brake response time test device.

Description

Technical Field

[0001] The utility model relates to the technical field of braking performance testing, and particularly relates to a vehicle EBS braking response time testing system. Background Technique

[0002] The importance of the braking performance of a trailer is self-evident. It is directly related to driving safety and driving efficiency and is an important indicator of the performance of the whole vehicle. During the braking process of the trailer, the speed at which the pressure in each air chamber is established directly affects the braking distance and braking effect of the vehicle. At present, the relevant standards have clearly defined the test methods and limit requirements for the braking response time of trailers, and have also elaborated on the test methods for the braking response time of vehicles with an electronic brake system (EBS).

[0003] Especially for dangerous goods transport vehicles, it is stipulated that an EBS braking system must be installed. With the implementation of this standard, the testing of the braking response time of vehicles with an EBS system has become increasingly important. Therefore, there is an urgent need for a system for testing the braking response time of vehicles with an EBS braking system. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a vehicle EBS braking response time testing system to solve the above technical problems.

[0005] The technical solution for the utility model to solve the above technical problems is as follows: A vehicle EBS braking response time testing system includes: an electronic control spiral cable, a braking response time testing device, and a pressure sensor; one end of the electronic control spiral cable is divided into a first branch and a second branch; the end of the first branch is connected to the EBS electronic control interface of the tractor of the vehicle to be tested, and the other end of the electronic control spiral cable is connected to the EBS electronic control interface of the trailer of the vehicle to be tested, or the first branch remains unconnected and the other end of the electronic control spiral cable is connected to the EBS electronic control interface of the tractor of the vehicle to be tested; the end of the second branch is connected to the braking response time testing device; the pressure sensor is installed at the braking air chamber test port of the trailer of the vehicle to be tested, and the pressure sensor is connected to the braking response time testing device.

[0006] The beneficial effects of the present utility model are as follows: A pressure sensor is provided to perform real-time detection of the pressure in the brake chamber of the trailer of the vehicle to be measured. And the standard electronic control spiral cable is modified, and the modified electronic control spiral cable is used to connect the tractor of the vehicle to be measured, the trailer of the vehicle to be measured, and the brake response time test equipment to achieve signal transmission. This system realizes the test of the vehicle EBS brake response time by using the existing general brake response time test equipment, and can realize the test of both the tractor and the trailer.

[0007] Based on the above technical solutions, the present utility model can be further improved as follows.

[0008] Further, the system further includes a power supply, and the power supply is connected to the power supply port of the brake response time test equipment.

[0009] The beneficial effect of adopting the above further solution is that the power supply is used to supply power to the brake response time test equipment.

[0010] Further, the power supply adopts a lithium battery with a DC voltage of 12V.

[0011] Further, the electronic control spiral cable contains seven electric cores, among which five electric cores form the first branch, and the other two electric cores form the second branch.

[0012] Further, the two electric cores in the second branch respectively adopt a CAN-H signal line and a CAN-L signal line.

[0013] The beneficial effect of adopting the above further solution is that it is used to realize the signal transmission between the trailer or tractor of the vehicle to be measured and the brake response time test equipment.

[0014] Further, the end of the first branch is connected to the EBS electronic control interface of the tractor of the vehicle to be measured, and the other end of the electronic control spiral cable is connected to the EBS electronic control interface of the trailer of the vehicle to be measured. Specifically: the corresponding ends of the five electric cores in the first branch respectively pass through the EBS electronic control interface of the tractor of the vehicle to be measured and are connected to the positive pole of the first electromagnetic relay valve, the negative pole of the first electromagnetic relay valve, the positive pole of the first ECU, the negative pole of the first ECU, and the power supply of the first warning light of the tractor of the vehicle to be measured; among the other end of the electronic control spiral cable, the corresponding ends of the five electric cores corresponding to the first branch respectively pass through the EBS electronic control interface of the trailer of the vehicle to be measured and are connected to the positive pole of the second electromagnetic relay valve, the negative pole of the second electromagnetic relay valve, the positive pole of the second ECU, the negative pole of the second ECU, and the power supply of the second warning light of the trailer of the vehicle to be measured; among the other end of the electronic control spiral cable, the corresponding ends of the other two electric cores respectively pass through the EBS electronic control interface of the trailer of the vehicle to be measured and are connected to the EBS controller of the trailer of the vehicle to be measured.

[0015] Further, the other end of the electric control spiral line is connected to the EBS electric control interface of the tractor of the vehicle to be tested. Specifically, among the other end of the electric control spiral line, the respective end portions of the five battery cells corresponding to the first branch are respectively connected to the positive electrode of the first electromagnetic relay valve, the negative electrode of the first electromagnetic relay valve, the positive electrode of the first ECU, the negative electrode of the first ECU, and the power supply of the first warning lamp of the tractor of the vehicle to be tested through the EBS electric control interface of the tractor of the vehicle to be tested; among the other end of the electric control spiral line, the respective end portions of the other two battery cells are respectively connected to the EBS controller of the tractor of the vehicle to be tested through the EBS electric control interface of the tractor of the vehicle to be tested.

[0016] Further, the respective end portions of the two battery cells within the second branch are respectively connected to the CAN interface of the braking response time testing device.

[0017] Further, the detection range of the pressure sensor is 1.6 MPa, and the voltage range of the output signal of the pressure sensor is from 1 V to 5 V.

[0018] Further, the pressure sensor is connected to the analog quantity testing interface of the braking response time testing device.

[0019] The beneficial effect of adopting the above further solution is: to enable the pressure sensor to transmit the measured air pressure value to the braking response time testing device in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a vehicle EBS braking response time testing system of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0022] Such as Figure 1As shown in the figure, this embodiment provides a vehicle EBS braking response time test system, including: an electronic control spiral line, a braking response time test device, and a pressure sensor; one end of the electronic control spiral line is divided into a first branch and a second branch; the end of the first branch is connected to the EBS electronic control interface of the tractor of the vehicle under test, and the other end of the electronic control spiral line is connected to the EBS electronic control interface of the trailer of the vehicle under test, or the first branch remains unconnected and the other end of the electronic control spiral line is connected to the EBS electronic control interface of the tractor of the vehicle under test; the end of the second branch is connected to the braking response time test device; the pressure sensor is installed on the braking chamber test port of the trailer of the vehicle under test, and the pressure sensor is connected to the braking response time test device.

[0023] A pressure sensor is set to perform real-time detection of the pressure in the braking chamber of the trailer of the vehicle under test. And the standard electronic control spiral line is transformed, and the transformed electronic control spiral line is used to connect the tractor of the vehicle under test, the trailer of the vehicle under test, and the braking response time test device to realize signal transmission. This system realizes the test of the vehicle EBS braking response time by using the existing general braking response time test device.

[0024] When the end of the first branch is connected to the EBS electronic control interface of the tractor of the vehicle under test and the other end of the electronic control spiral line is connected to the EBS electronic control interface of the trailer of the vehicle under test, it is used to realize the test of the EBS braking response time of the trailer of the vehicle under test. When the first branch remains unconnected and the other end of the electronic control spiral line is connected to the EBS electronic control interface of the tractor of the vehicle under test, it is used to realize the test of the EBS braking response time of the tractor of the vehicle under test. Therefore, this system can not only realize the test of the tractor, but also realize the test of the trailer.

[0025] Among them, the braking response time test device is an existing device, and the braking response time test device can adopt the Naiou all-in-one machine, and the Naiou all-in-one machine is an existing general test platform. After the system is powered on, the Naiou all-in-one machine test platform will receive and display the CAN message information sent by the vehicle EBS under test. The CAN message information refers to the communication content between the test platform and the vehicle under test, and the content of the CAN message information should follow the national standard. Before the test, the test personnel should check the CAN message information to check whether there is any garbled code to prevent inaccurate test results caused by wiring errors and other reasons. Directly starting the test function of the Naiou all-in-one machine can realize the automatic test of the braking response time and generate the test result.

[0026] Optionally, in the embodiment, the system further includes a power supply, which is connected to the power supply port of the braking response time test device. The power supply is a lithium battery with a DC voltage of 12V. The power supply is connected to the braking response time test device through a power cord to supply power to the braking response time test device.

[0027] Optionally, in the embodiment, the electronic control spiral line contains seven battery cells, among which five battery cells form the first branch, and the other two battery cells form the second branch.

[0028] The standard EBS electronic control spiral line contains five battery cells for realizing signal transmission between the trailer and the tractor. In this embodiment, the standard EBS electronic control spiral line is modified, and the modified electronic control spiral line contains seven battery cells for realizing signal transmission among the trailer, the tractor and the braking response time test device.

[0029] Optionally, in the embodiment, the two battery cells in the second branch respectively adopt a CAN-H signal line and a CAN-L signal line for CAN signal transmission.

[0030] Optionally, in the embodiment, the end of the first branch is connected to the EBS electronic control interface of the tractor of the vehicle under test, and the other end of the electronic control spiral line is connected to the EBS electronic control interface of the trailer of the vehicle under test. Specifically: the corresponding ends of the five battery cells in the first branch respectively pass through the EBS electronic control interface of the tractor of the vehicle under test and are connected to the positive pole of the first electromagnetic relay valve, the negative pole of the first electromagnetic relay valve, the positive pole of the first ECU, the negative pole of the first ECU, and the power supply of the first warning lamp of the tractor of the vehicle under test; among the other end of the electronic control spiral line, the corresponding ends of the five battery cells corresponding to the first branch respectively pass through the EBS electronic control interface of the trailer of the vehicle under test and are connected to the positive pole of the second electromagnetic relay valve, the negative pole of the second electromagnetic relay valve, the positive pole of the second ECU, the negative pole of the second ECU, and the power supply of the second warning lamp of the trailer of the vehicle under test; among the other end of the electronic control spiral line, the corresponding ends of the other two battery cells respectively pass through the EBS electronic control interface of the trailer of the vehicle under test and are connected to the EBS controller of the trailer of the vehicle under test. Among them, ECU is the Electronic Control Unit.

[0031] The other end of the electronic control spiral line is connected to the EBS electronic control interface of the tractor of the vehicle to be tested. Specifically, among the other end of the electronic control spiral line, the respective ends of the five battery cells corresponding to the first branch are respectively connected to the positive electrode of the first electromagnetic relay valve of the tractor of the vehicle to be tested, the negative electrode of the first electromagnetic relay valve, the positive electrode of the first ECU, the negative electrode of the first ECU, and the power supply of the first warning lamp through the EBS electronic control interface of the tractor of the vehicle to be tested; among the other end of the electronic control spiral line, the respective ends of the other two battery cells are respectively connected to the EBS controller of the tractor of the vehicle to be tested through the EBS electronic control interface of the tractor of the vehicle to be tested.

[0032] Optionally, in the embodiment, the respective ends of the two battery cells in the second branch are respectively connected to the CAN interface of the braking response time test device.

[0033] Optionally, in the embodiment, the detection range of the pressure sensor is 1.6 MPa, and the voltage range of the output signal of the pressure sensor is from 1 V to 5 V. The pressure sensor is connected to the analog quantity test interface of the braking response time test device.

[0034] In summary, by virtue of the braking response time test function of the existing braking response time test device, the present test system realizes the test of the braking response time of the vehicle equipped with the EBS system. The present test system has characteristics such as flexibility, convenience, and good scalability, and can meet various EBS braking response time test experiments.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0037] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "coupling", "fixing", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0039] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0040] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A vehicle EBS braking response time test system, characterized in that, Comprising: An electronically controlled spiral wire, a braking response time test device, and a pressure sensor; One end of the electronically controlled spiral wire is divided into a first branch and a second branch; The end of the first branch is connected to the EBS electronic control interface of the tractor of the vehicle under test, and the other end of the electronically controlled spiral wire is connected to the EBS electronic control interface of the trailer of the vehicle under test, or the first branch remains unconnected and the other end of the electronically controlled spiral wire is connected to the EBS electronic control interface of the tractor of the vehicle under test; the end of the second branch is connected to the braking response time test device; The pressure sensor is installed on the braking air chamber test port of the trailer of the vehicle under test, and the pressure sensor is connected to the braking response time test device.

2. The vehicle EBS braking response time test system according to claim 1, wherein It further includes a power supply, and the power supply is connected to the power supply port of the braking response time test device.

3. The vehicle EBS braking response time test system according to claim 2, wherein, The power supply uses a lithium battery with a DC voltage of 12V.

4. The vehicle EBS braking response time test system according to claim 1, wherein The electronically controlled spiral wire contains seven battery cores, among which five battery cores form the first branch and the other two battery cores form the second branch.

5. The vehicle EBS braking response time test system according to claim 4, characterized in that, The two battery cores in the second branch respectively use a CAN-H signal wire and a CAN-L signal wire.

6. The vehicle EBS braking response time test system according to claim 4, wherein The end of the first branch is connected to the EBS electronic control interface of the tractor of the vehicle under test, and the other end of the electronically controlled spiral wire is connected to the EBS electronic control interface of the trailer of the vehicle under test. Specifically: The corresponding ends of the five battery cores in the first branch respectively pass through the EBS electronic control interface of the tractor of the vehicle under test and are connected to the positive pole of the first electromagnetic relay valve, the negative pole of the first electromagnetic relay valve, the positive pole of the first ECU, the negative pole of the first ECU, and the power supply of the first warning lamp of the tractor of the vehicle under test; among the other end of the electronically controlled spiral wire, the corresponding ends of the five battery cores corresponding to the first branch respectively pass through the EBS electronic control interface of the trailer of the vehicle under test and are connected to the positive pole of the second electromagnetic relay valve, the negative pole of the second electromagnetic relay valve, the positive pole of the second ECU, the negative pole of the second ECU, and the power supply of the second warning lamp of the trailer of the vehicle under test; among the other end of the electronically controlled spiral wire, the corresponding ends of the other two battery cores respectively pass through the EBS electronic control interface of the trailer of the vehicle under test and are connected to the EBS controller of the trailer of the vehicle under test.

7. The vehicle EBS braking response time test system according to claim 4, wherein, The other end of the electronically controlled spiral wire is connected to the EBS electronic control interface of the tractor of the vehicle under test. Specifically: Among the other end of the electronically controlled spiral wire, the corresponding ends of the five battery cores corresponding to the first branch respectively pass through the EBS electronic control interface of the tractor of the vehicle under test and are connected to the positive pole of the first electromagnetic relay valve, the negative pole of the first electromagnetic relay valve, the positive pole of the first ECU, the negative pole of the first ECU, and the power supply of the first warning lamp of the tractor of the vehicle under test; among the other end of the electronically controlled spiral wire, the corresponding ends of the other two battery cores respectively pass through the EBS electronic control interface of the tractor of the vehicle under test and are connected to the EBS controller of the tractor of the vehicle under test.

8. The vehicle EBS braking response time test system according to claim 4, wherein, The corresponding ends of the two battery cores in the second branch are respectively connected to the CAN interface of the braking response time test device.

9. The vehicle EBS braking response time test system according to claim 1, characterized in that, The detection range of the pressure sensor is 1.6 MPa, and the voltage range of the output signal of the pressure sensor is from 1 V to 5 V.

10. The vehicle EBS braking response time test system according to claim 1, wherein The pressure sensor is connected to the analog test interface of the braking response time test device.

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