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Working condition testing method and device

A test method and technology of test equipment, which can be used in vehicle testing, machine/structural component testing, measuring devices, etc., can solve the physical and mental health of drivers, easily damage the physical and mental health of drivers, accelerator pedal and brake pedal stepping Small amplitude and other problems, to ensure the accuracy and realize the effect of working condition test operation

Active Publication Date: 2019-05-21
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the working condition test, there are differences in the driving habits of different drivers: some drivers like aggressive driving styles, so they step on the accelerator and brake pedals more; driving style, so the stepping on the accelerator and brake pedals is relatively small
It can be seen that different drivers step on the pedals slightly differently during the test. These different operating habits will affect the energy consumption of the test vehicle, especially the mileage of the test vehicle, and then affect the accuracy of the test data.
In addition, when the high and low temperature environment cabin is tested under extreme conditions, it is necessary to turn off the air conditioner for cooling or heating, so that the temperature in the vehicle cabin is basically the same as the temperature set in the environment cabin. Such high and low temperatures (such as minus 30 degrees or 40 degrees above zero) will pose a great challenge to the driver's physical fitness, and even cause damage to the driver's physical and mental health
[0004] It can be seen that the use of drivers for working condition tests, on the one hand, will affect the accuracy of test data due to differences in personal driving habits; on the other hand, some extreme test environments can easily damage the physical and mental health of drivers

Method used

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  • Working condition testing method and device
  • Working condition testing method and device

Examples

Experimental program
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Embodiment 1

[0059] See figure 2 , figure 2 It is a schematic flowchart of a working condition testing method disclosed in an embodiment of the present invention. among them, figure 1 The described working condition test method is suitable for figure 2 The hardware system architecture shown. Such as figure 2 As shown, the working condition test method can include the following steps:

[0060] 201. The test device obtains the set vehicle speed and the actual vehicle speed of the test vehicle.

[0061] As an optional implementation manner, acquiring the set vehicle speed and the actual vehicle speed of the test vehicle by the testing device may include:

[0062] The test equipment uses the CAN bus to obtain the set speed and the actual speed of the test vehicle.

[0063] In the embodiment of the present invention, the CAN (Controller Area Network) bus is a serial communication protocol bus used for real-time applications. The test equipment can obtain the set vehicle speed from pre-associated ...

Embodiment 2

[0081] See image 3 , image 3 It is a schematic flow chart of another working condition testing method disclosed in an embodiment of the present invention. Among them, such as image 3 As shown, the working condition test method can include the following steps:

[0082] In the embodiment of the present invention, the working condition testing method includes steps 301 to 302. For the description of steps 301 to 302, please refer to the detailed description of steps 201 to 202 in the first embodiment, which will not be repeated in this embodiment of the present invention.

[0083] 303. The test device receives the target test mode for the test vehicle, and obtains the target test coefficient corresponding to the target test mode; wherein, different test modes correspond to driving behaviors of different degrees of intensity, and the test coefficients are positively correlated with the intensity of driving behavior.

[0084] In the embodiment of the present invention, since different ...

Embodiment 3

[0091] See Figure 4 , Figure 4 It is a schematic structural diagram of a testing device disclosed in an embodiment of the present invention. Such as Figure 4 As shown, the test equipment may include:

[0092] The first acquiring unit 401 is configured to acquire the set vehicle speed and the actual vehicle speed of the test vehicle, and provide the set vehicle speed and actual vehicle speed to the calculation unit 402.

[0093] The calculation unit 402 is configured to calculate the speed difference between the set vehicle speed and the actual vehicle speed, and provide the calculation result to the second acquisition unit 403.

[0094] The second acquiring unit 403 is configured to acquire the required torque value corresponding to the speed difference, and provide the required torque value to the first determining unit 404.

[0095] In the embodiment of the present invention, after the calculation unit 402 calculates the speed difference between the set vehicle speed and the actu...

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Abstract

The invention relates to a working condition testing method and device. The method comprises: acquiring a set vehicle speed and an actual vehicle speed of a tested vehicle; calculating a speed difference between the set vehicle speed and the actual vehicle speed and acquiring a required torque value corresponding to the speed difference; and determining a corresponding threading depth demand valuebased on the required torque value, determining a corresponding PWM duty ratio signal according to the threading depth demand value and outputting the PWM duty ratio signal to a driving board so as to drive an electric push rod by the driving board based on the PWM duty ratio signal to push an accelerator pedal or brake pedal of the tested vehicle. Therefore, the accuracy of the test data can beensured and the influence of certain extreme test environments on the physical and mental health of the driver can be avoided.

Description

Technical field [0001] The invention relates to the technical field of vehicle testing, in particular to a working condition testing method and equipment. Background technique [0002] Real vehicle testing, especially testing in a rotating hub environment, is an important part of automotive development. Common real-vehicle hub tests include standard operating conditions (NEDC), dynamic performance testing, and operating conditions testing combined with high and low temperature environmental chambers. Take the working condition test as an example. At present, the working condition test basically adopts the direct operation method of the tester (sometimes there are auxiliary testers sitting in the front passenger seat), that is, the tester acts as the driver to drive the test vehicle while turning. Run NEDC operating conditions in the hub environment to verify mileage. [0003] However, in the test of working conditions, different drivers have differences in driving habits: some dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007
Inventor 刘隆
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD