Electronic parking brake module test system

Abstract

The embodiment of the utility model discloses an electronic parking brake module test system. The system comprises a gas supply module, a gas tank, a first gas pressure sensor, a second gas pressure sensor, a control panel and an electronic parking brake module, the control panel is used for generating and sending a test instruction and target opening information based on the test trigger operation; the gas supply module is used for providing high-pressure gas for the electronic parking brake module in response to the test instruction; the electronic parking braking module is used for controlling the electronic parking braking module to adjust the opening degree in response to the target opening degree information; the first air pressure sensor is used for collecting and sending a current air inlet pressure value to the control panel; the second air pressure sensor is used for collecting and sending a current air tank pressure value to the control panel; and the control panel is also used for determining a target test result based on the current air inlet pressure value, the current air tank pressure value, a pre-stored target air inlet pressure value and a pre-stored target air tank pressure value, so that the dynamic test of the electronic parking brake module is automatically carried out, and the test efficiency is improved.

Description

Technical Field

[0001] The embodiment of the utility model relates to the field of vehicle testing, and in particular to an electronic parking brake module testing system. Background Art

[0002] With the development of the automobile industry, users have higher and higher requirements for safety performance. As a new generation of brake modules, the Electronic Park Brake (EPB) has gradually become the mainstream of the industry. The electronic parking brake module with the electronic parking brake function requires a lot of testing during development.

[0003] At present, the actual load is usually used to complete the test with the electronic parking brake module. The electronic parking brake module is tested under specified working conditions based on the installed actual load to determine whether the electronic parking brake module meets the design requirements.

[0004] However, the complexity of the actual load means that it takes a lot of time to install the actual load, which reduces the test efficiency. The installed actual load and the electronic parking brake module take up a large space and will be disturbed by the outside world during the test, which reduces the test accuracy. Utility Model Content

[0005] The embodiment of the utility model provides an electronic parking brake module testing system to realize automatic dynamic testing of the electronic parking brake module, thereby improving the testing efficiency.

[0006] In a first aspect, an embodiment of the utility model provides an electronic parking brake module test system, the system comprising: a gas supply module, a gas tank, a first air pressure sensor, a second air pressure sensor, a control panel and an electronic parking brake module; the gas supply module is connected to the electronic parking brake module through an air pipe; the electronic parking brake module is connected to the gas tank through an air pipe; wherein,

[0007] The control panel is used for generating a test instruction and target opening information of the electronic parking brake module based on a test trigger operation of the electronic parking brake module, and sending the test instruction to the gas supply module, and sending the target opening information to the electronic parking brake module;

[0008] The gas supply module is used to provide high-pressure gas to the electronic parking brake module in response to the received test instruction;

[0009] The electronic parking brake module is used for controlling the opening of the electronic parking brake module to be adjusted to the target opening in response to the received target opening information;

[0010] The first air pressure sensor is used to collect the current intake pressure value of the electronic parking brake module and send the current intake pressure value to the control board;

[0011] The second air pressure sensor is used to collect the current air tank pressure value of the air tank and send the current air tank pressure value to the control board;

[0012] The control panel is also used to determine the target test result corresponding to the electronic parking brake module based on the received current intake pressure value, the current gas tank pressure value, and the target intake pressure value and target gas tank pressure value corresponding to the pre-stored target opening information.

[0013] The technical solution of the embodiment of the utility model, the electronic parking brake module test system comprises: a gas supply module, a gas tank, a first air pressure sensor, a second air pressure sensor, a control panel and an electronic parking brake module; the gas supply module is connected to the electronic parking brake module through an air pipe; the electronic parking brake module is connected to the gas tank through an air pipe; wherein the control panel is used to generate a test instruction and target opening information of the electronic parking brake module based on a test trigger operation of the electronic parking brake module, and send the test instruction to the gas supply module, and send the target opening information to the electronic parking brake module; the gas supply module is used to provide high-pressure gas to the electronic parking brake module in response to the received test instruction; the electronic parking brake module is used to control the electronic parking brake module in response to the received target opening information The opening of the electronic parking brake module is adjusted to the target opening; the first air pressure sensor is used to collect the current intake pressure value of the electronic parking brake module and send the current intake pressure value to the control board; the second air pressure sensor is used to collect the current tank pressure value of the gas tank and send the current tank pressure value to the control board; the control board is also used to determine the target test result corresponding to the electronic parking brake module based on the received current intake pressure value, the current tank pressure value, and the pre-stored target intake pressure value and target tank pressure value corresponding to the target opening information, so as to construct a test scenario of the electronic parking brake module using the electronic parking brake module test system, and simulate multiple working conditions based on multiple target opening information, so as to realize dynamic testing of the electronic parking brake module and improve test efficiency.

[0014] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a structural schematic diagram of an electronic parking brake module testing system provided by the first embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of an electronic parking brake module testing system provided in Embodiment 2 of the present utility model. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0019] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0020] Embodiment 1

[0021] Figure 1 1 is a schematic diagram of the structure of an electronic parking brake module test system provided by the first embodiment of the present utility model. The electronic parking brake module test system provided by this embodiment can be applied to the situation of testing the electronic parking brake module. Figure 1As shown, the electronic parking brake module test system includes: a gas supply module, a gas tank, a first air pressure sensor, a second air pressure sensor, a control board and an electronic parking brake module; the gas supply module is connected to the electronic parking brake module through an air pipe; the electronic parking brake module is connected to the gas tank through an air pipe.

[0022] Among them, the control board is used to generate a test instruction and target opening information of the electronic parking brake module based on the test trigger operation of the electronic parking brake module, and send the test instruction to the gas supply module, and send the target opening information to the electronic parking brake module; the gas supply module is used to provide high-pressure gas to the electronic parking brake module in response to the received test instruction; the electronic parking brake module is used to control the opening of the electronic parking brake module to be adjusted to the target opening in response to the received target opening information; the first air pressure sensor is used to collect the current intake pressure value of the electronic parking brake module and send the current intake pressure value to the control board; the second air pressure sensor is used to collect the current tank pressure value of the gas tank and send the current tank pressure value to the control board; the control board is also used to determine the target test result corresponding to the electronic parking brake module based on the received current intake pressure value, the current tank pressure value, and the target intake pressure value and target tank pressure value corresponding to the pre-stored target opening information.

[0023] Among them, the control panel can be used to simulate the opening signal sent to the electronic parking brake module to test the operating effect of the electronic parking brake module under various working conditions. The control panel can be manually controlled to complete the test, or it can be automatically controlled based on the test plan to complete the control. The electronic parking brake module can refer to a brake module with an electronic parking function. For example, the electronic parking can be an Electrical Park Brake (EPB). The test trigger operation can refer to a test start operation triggered on the control panel. For example, the test trigger operation can be a control on the control panel to select the opening of the electronic parking brake module and the test start instruction. The test trigger operation can be manually triggered or automatically triggered based on the test plan. The test instruction can refer to a test start instruction. The test instruction can be used to inform the gas supply module to start the test. The target opening information can be the opening degree of the electronic parking brake module. For example, the target opening information can be but not limited to 30% opening, 50% opening and 80% opening. The gas supply module can refer to a module that provides gas to the electronic parking brake module to simulate the gas supply situation under various working conditions of the actual vehicle. The first air pressure sensor can refer to a sensor for detecting the internal pressure of the air pipe. The first air pressure sensor may be used to detect the pressure of the air intake pipe of the electronic parking brake module. The current air intake pressure value may refer to the pressure value of the air intake pipe of the electronic parking brake module detected by the first air pressure sensor. The current air intake pressure value may be, but not limited to, the pressure average value within a preset time period, and the pressure value detected at a preset frequency. The second air pressure sensor may refer to a sensor for detecting the pressure inside the air pipe. The second air pressure sensor may be used to detect the pressure of the air tank connected to the air outlet pipe of the electronic parking brake module. The air tank may be connected to the electronic parking brake module through the air pipe. The current air tank pressure value may refer to the pressure value of the air tank connected to the air outlet pipe of the electronic parking brake module detected by the second air pressure sensor. The current air tank pressure value may be, but not limited to, the pressure average value within a preset time period, and the pressure value detected at a preset frequency. The target air intake pressure value may refer to the expected pressure value of the air intake pipe of the electronic parking brake module corresponding to the target opening information pre-stored in the control panel. The target air tank pressure value may refer to the expected pressure value of the air tank connected to the air outlet pipe of the electronic parking brake module corresponding to the target opening information pre-stored in the control panel. The target test result may refer to the functional test result of the electronic parking brake module. For example, the target test result may include functional test results of the electronic parking brake module under various operating conditions or various opening degrees.

[0024] Specifically, the control panel generates the target opening information of the electronic parking brake module based on the operation of selecting the target opening information in the test trigger operation of the electronic parking brake module, and generates the test instruction of the electronic parking brake module based on the test start operation in the test trigger operation of the electronic parking brake module. The control panel sends the test instruction to the gas supply module and sends the target opening information to the electronic parking brake module. The gas supply module receives the test instruction and provides high-pressure gas to the electronic parking brake module in response to the received test instruction. The electronic parking brake module receives the target opening information and controls the opening of the electronic parking brake module to be adjusted to the target opening in response to the received target opening information. The first air pressure sensor collects the current intake pressure value of the intake pipe of the electronic parking brake module and sends the current intake pressure value to the control panel. The second air pressure sensor collects the current tank pressure value of the gas tank connected to the outlet pipe of the electronic parking brake module and sends the current tank pressure value to the control panel. The control board also determines a target test result corresponding to the electronic parking brake module based on the received current intake pressure value, the current gas tank pressure value, and the target intake pressure value and the target gas tank pressure value corresponding to the pre-stored target opening information.

[0025] The technical solution of the embodiment of the utility model, the electronic parking brake module test system comprises: a gas supply module, a gas tank, a first air pressure sensor, a second air pressure sensor, a control panel and an electronic parking brake module; the gas supply module is connected to the electronic parking brake module through an air pipe; the electronic parking brake module is connected to the gas tank through an air pipe; wherein the control panel is used to generate a test instruction and target opening information of the electronic parking brake module based on a test trigger operation of the electronic parking brake module, and send a test instruction to the gas supply module, and send a target opening information to the electronic parking brake module; the gas supply module is used to provide high-pressure gas to the electronic parking brake module in response to the received test instruction; the electronic parking brake module is used to control the electronic parking brake module in response to the received target opening information The opening of the parking brake module is adjusted to the target opening; the first air pressure sensor is used to collect the current intake pressure value of the electronic parking brake module and send the current intake pressure value to the control board; the second air pressure sensor is used to collect the current tank pressure value of the gas tank and send the current tank pressure value to the control board; the control board is also used to determine the target test result corresponding to the electronic parking brake module based on the received current intake pressure value, the current tank pressure value, and the target intake pressure value and the target tank pressure value corresponding to the pre-stored target opening information, so as to construct a test scenario of the electronic parking brake module using the electronic parking brake module test system, and simulate multiple working conditions based on multiple target opening information, so as to realize dynamic testing of the electronic parking brake module and improve test efficiency.

[0026] On the basis of the above technical solution, the control panel includes: a memory, a comparator and a decision maker; wherein the memory is used to pre-store a target intake pressure value and a target gas tank pressure value corresponding to the target opening information; the comparator is used to compare the received current intake pressure value with the target intake pressure value corresponding to the pre-stored target opening information to determine a first test result, and compare the received current gas tank pressure value with the target gas tank pressure value corresponding to the pre-stored target opening information to determine a second test result, and send the first test result and the second test result to the decision maker; the decision maker is used to determine the target test result corresponding to the electronic parking brake module based on the received first test result and the second test result.

[0027] The first test result can be used to indicate whether the air intake function of the electronic parking brake module is normal. The second test result can be used to indicate whether the air outlet function of the electronic parking brake module is normal.

[0028] Specifically, the comparator in the control panel compares the received current intake pressure value with the target intake pressure value corresponding to the target opening information pre-stored in the memory of the control panel to determine the first test result, and compares the received current gas tank pressure value with the target gas tank pressure value corresponding to the target opening information pre-stored in the memory of the control panel to determine the second test result. The decision maker in the control panel determines the target test result corresponding to the electronic parking brake module based on the first test result and the second test result.

[0029] Exemplarily, if the error between the current intake pressure value and the target intake pressure value is within the preset error range corresponding to the intake pressure, the first test result is determined as the intake function is normal; otherwise, the first test result is determined as the intake function is abnormal. If the error between the current gas tank pressure value and the target gas tank pressure value is within the preset error range corresponding to the gas tank pressure, the second test result is determined as the outlet function is normal; otherwise, the second test result is determined as the outlet function is abnormal. If there is at least one abnormal test result between the first test result and the second test result, the target test result is determined as the braking function is abnormal. If both the first test result and the second test result are normal test results, the target test result is determined as the braking function is normal, so that when all test results are normal or qualified, the target test result corresponding to the electronic parking brake module is determined to be normal or qualified.

[0030] On the basis of the above technical solution, the gas supply module includes: an air compressor and an air reservoir; wherein the air compressor is connected to the air reservoir through an air pipe; and the air reservoir is connected to the electronic parking brake module through an air pipe.

[0031] The air compressor is used to provide a high-pressure gas source to the air reservoir; the air reservoir is used to store the high-pressure gas source and stably control the intake pressure of the electronic parking brake module. The advantage of this arrangement is that it can provide stable high-pressure gas to the electronic parking brake module.

[0032] Exemplarily, the air compressor is connected to the air reservoir through an air pipe to provide high-pressure gas to the air reservoir. The air reservoir is used to store and stabilize the pressure of the air source in the system, and is connected to the air inlet of the electronic parking brake module through the air pipe to supply high-pressure gas to the electronic parking brake module.

[0033] On the basis of the above technical solution, the number of gas tanks is at least one; each gas tank corresponds to a second air pressure sensor; wherein the gas tank is used to simulate the brake cylinder in the actual vehicle. The advantage of such a setting is that the actual vehicle scene can be simulated based on the number of brake cylinders in the actual vehicle using the same number of gas tanks, thereby improving the accuracy of the test and the authenticity of the test results. It is also possible to construct a simulation scene based on multiple gas tanks, so as to conduct research and development for the simulation scene and obtain the number and model of brake cylinders corresponding to the optimal braking effect of the electronic parking brake module.

[0034] On the basis of the above technical solution, the system also includes: a host computer; wherein the control panel is also used to send target test data to the host computer; the target test data includes: target opening information, current intake pressure value, target intake pressure value, first test result, current gas tank pressure value, target gas tank pressure value, second test result and at least one of the target test results; the host computer is used to display the received target test data.

[0035] The host computer may refer to a terminal device with a data display function. The advantage of such a setting is that the data used, collected and determined during the test can be displayed by the host computer, so that the data can be seen intuitively, and the displayed data can be compared to generate a test analysis report, thereby improving the interpretability of the test results and test data.

[0036] On the basis of the above technical solution, the host computer is also used to issue an alarm when the target test result is an unqualified result, and mark the electronic parking brake module corresponding to the unqualified result. The advantage of this setting is that it can focus on the unqualified result and perform subsequent processing on the electronic parking brake module corresponding to the unqualified result, thereby reducing the number of rechecks and the recheck cost.

[0037] Based on the above technical solution, the control panel is used to simulate the electronic parking brake switch in the actual vehicle. The advantage of this setting is that the control panel can be used to simulate various working conditions in the actual vehicle, fully covering the tests under all working conditions, and improving the comprehensiveness of the test and the accuracy of the test results.

[0038] Based on the above technical solution, the control panel is used to simulate multiple real vehicle operating conditions based on multiple target opening information. The advantage of this arrangement is that each target opening information can be used to test each real vehicle operating condition, and the simulation test can be repeated multiple times, and the target test result of the electronic parking brake module can be determined based on multiple test results, further improving the accuracy of the test result.

[0039] On the basis of the above technical solution, the electronic parking brake module is a pneumatic electronic parking brake module. The advantage of such a setting is that a more targeted test can be performed on the pneumatic electronic parking brake module, further improving the accuracy of the test result.

[0040] Embodiment 2

[0041] Figure 2 This is a schematic diagram of the structure of an electronic parking brake module test system provided by the second embodiment of the utility model. Based on the above embodiments, this embodiment provides a solution for an optimal electronic parking brake module test system. The explanations of the terms that are the same or corresponding to the above embodiments are not repeated here. Figure 2 As shown, the system includes: a gas supply module, a gas tank, a first air pressure sensor, a second air pressure sensor, a control board, an electronic parking brake module and a host computer; wherein the gas supply module includes: an air compressor and an air storage cylinder.

[0042] Among them, the gas supply module is connected to the electronic parking brake module through an air pipe; the electronic parking brake module is connected to the gas tank through an air pipe; the air compressor is connected to the air reservoir through an air pipe; the air reservoir is connected to the electronic parking brake module through an air pipe.

[0043] Specifically, the control board is used to generate a test instruction and target opening information of the electronic parking brake module based on a test trigger operation of the electronic parking brake module, and send the test instruction to the gas supply module and the target opening information to the electronic parking brake module.

[0044] The gas supply module is used to provide high pressure gas to the electronic parking brake module in response to a received test command.

[0045] The electronic parking brake module is used for controlling the opening of the electronic parking brake module to be adjusted to the target opening in response to the received target opening information.

[0046] The first air pressure sensor is used to collect the current intake pressure value of the electronic parking brake module and send the current intake pressure value to the control board.

[0047] The second air pressure sensor is used to collect the current air tank pressure value of the air tank and send the current air tank pressure value to the control board.

[0048] The control board is also used to determine the target test result corresponding to the electronic parking brake module based on the received current intake pressure value, the current gas tank pressure value, and the target intake pressure value and the target gas tank pressure value corresponding to the pre-stored target opening information.

[0049] The control panel is also used to send target test data to the upper computer; the target test data includes: at least one of target opening information, current intake pressure value, target intake pressure value, first test result, current gas tank pressure value, target gas tank pressure value, second test result and target test result;

[0050] The host computer is used to display the received target test data.

[0051] The host computer is also used to issue an alarm when the target test result is an unqualified result, and mark the electronic parking brake module corresponding to the unqualified result.

[0052] For example, the air compressor is used to provide a high-pressure air source to the air reservoir; the air reservoir is used to store the high-pressure air source and stably control the intake pressure of the electronic parking brake module. The air tank is used to simulate the brake cylinder in the actual vehicle.

[0053] The optimal vehicle control function testing system provided in this embodiment can achieve the beneficial effects corresponding to the various embodiments of the utility model.

[0054] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0055] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An electronic parking brake module test system, characterized in that: The system comprises: a gas supply module, a gas tank, a first air pressure sensor, a second air pressure sensor, a control panel and an electronic parking brake module; the gas supply module is connected to the electronic parking brake module through an air pipe; the electronic parking brake module is connected to the gas tank through an air pipe; wherein, The control panel is used to generate a test instruction and target opening information of the electronic parking brake module based on a test trigger operation of the electronic parking brake module, and send the test instruction to the gas supply module and send the target opening information to the electronic parking brake module; The gas supply module is used to provide high-pressure gas to the electronic parking brake module in response to the received test instruction; The electronic parking brake module is used for controlling the opening of the electronic parking brake module to be adjusted to the target opening in response to the received target opening information; The first air pressure sensor is used to collect the current intake pressure value of the electronic parking brake module and send the current intake pressure value to the control board; The second air pressure sensor is used to collect the current air tank pressure value of the air tank and send the current air tank pressure value to the control board; The control panel is also used to determine the target test result corresponding to the electronic parking brake module based on the received current intake pressure value, the current gas tank pressure value, and the pre-stored target intake pressure value and target gas tank pressure value corresponding to the target opening information.

2. The system according to claim 1, characterized in that The control board includes: a memory, a comparator and a decision maker; wherein, The memory is used to pre-store a target intake pressure value and a target gas tank pressure value corresponding to the target opening information; The comparator is used to compare the received current intake pressure value with the target intake pressure value corresponding to the pre-stored target opening information to determine a first test result, and compare the received current gas tank pressure value with the pre-stored target gas tank pressure value corresponding to the target opening information to determine a second test result, and send the first test result and the second test result to the decision maker; The decision maker is used to determine a target test result corresponding to the electronic parking brake module based on the received first test result and the second test result.

3. The system according to claim 1, characterized in that The gas supply module comprises: an air compressor and an air storage cylinder; wherein, The air compressor is connected to the air storage cylinder through an air pipe; The air reservoir is communicated with the electronic parking brake module through an air pipe.

4. The system according to claim 3, characterized in that The air compressor is used to provide a high-pressure air source to the air storage cylinder; The air reservoir is used to store a high-pressure air source and stably control the air intake pressure of the electronic parking brake module.

5. The system according to claim 1, characterized in that The number of the gas tank is at least one; each gas tank corresponds to a second air pressure sensor; wherein, The gas tank is used to simulate the brake cylinder in a real vehicle.

6. The system according to claim 2, characterized in that The system also includes: a host computer; wherein, The control panel is also used to send target test data to the host computer; the target test data includes: at least one of the target opening information, the current intake pressure value, the target intake pressure value, the first test result, the current gas tank pressure value, the target gas tank pressure value, the second test result and the target test result; The host computer is used to display the received target test data.

7. The system according to claim 6, characterized in that The host computer is also used to issue an alarm when the target test result is an unqualified result, and mark the electronic parking brake module corresponding to the unqualified result.

8. The system according to claim 1, characterized in that The control panel is used to simulate the electronic parking brake switch in a real vehicle.

9. The system according to claim 1, characterized in that The control panel is used to simulate various actual vehicle operating conditions based on various target opening information.

10. The system according to any one of claims 1 to 9, characterized in that: The electronic parking brake module is a pneumatic electronic parking brake module.

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