A method for detecting wind tunnel test parameters of wiper products

Abstract

The invention discloses a method for detecting the wind tunnel test parameters of wiper products. Aiming at the special test requirements of the wind tunnel test, the circuit loop design is added on the basis of the existing detection, and the detection data of different loops are collected by PLC programming, and through the conversion The device restores the real-time pulses of different parameters into data and presents them on the display screen, and draws a curve while recording the real-time data. The curve records all the data from the beginning to the end of the test and displays the relationship between the parameters on the same screen for testing. Results evaluation and problem analysis. The invention can detect the real-time data and changing curves of various parameters of the motor under the conditions of different wind speeds, different water spray volumes, different speeds and different working hours, and save the test data; at the same time, it can be applied to general test items , because the general test items do not have as many performance parameters as the wind tunnel test requires, when using the present invention, only some of the functions may be required to meet the requirements.

Description

technical field [0001] The invention belongs to the technical field of automobile wiper products, and in particular relates to a method for detecting wind tunnel test parameters of wiper products. Background technique [0002] During the test process of the motor, especially the wiper motor, its performance parameters will change due to different working conditions. For example, the working condition of the wiper product changes in real time during the wind tunnel test, so the parameter detection method is more complicated. When the wind tunnel test of wiper products is carried out, the current, voltage, temperature and speed of the motor are important indicators to measure the performance of the motor. When the wind speed changes from 160km / h to 250km / h, the test includes motor performance, mechanism performance and blade performance. The whole test process takes several hours to complete. During the test, the parameters of the wiper motor vary according to the load. Chang...

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Problems solved by technology

[0004] In order to solve the problems existing in the existing test method and prevent the error of the test data caused by human operation, after a long period of repeated derivation, assembly test and actual verification, a real-time measurement method is finally provided when the wiper is in the wind tunnel test. The current, voltage, temperature, speed and other basic performance methods of the motor when it is working. This method can detect six or more parameters at the same time, and can display the measured values ​​​​during the entire test process in the form of data and curves. It can be used in The changing rules of relevant parameters can be seen on a parameter table, which can not only help test engineers to make quick judgments on test results, but also help R&D technicians find abnormal points in the test process, and provide real-time data for analysis and solve problems. Improve product quality

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