Automobile key switch testing system and testing method

Abstract

The invention discloses an automobile key switch testing system and a testing method. The automobile key switch testing system comprises a mechanical portion and an electric portion (36), the electric portion (36) consists of an industrial control computer (1), a multifunctional data acquisition card (2), a first stepper motor driver (3), a first stepper motor (4), a relay (5), a first direct-current stabilized voltage supply (6), a pressure sensor (7), a signal interference suppression and filter circuit (8), a millivolt transmitter (9), a second stepper motor driver (10), a second stepper motor (11), a third stepper motor driver (12), a third stepper motor (13), a fourth stepper motor driver (14), a fourth stepper motor (15), an amplifier (16) and a second direct-current stabilized voltage supply (17). The invention further provides a method for testing performances of an automobile key switch by the aid of the automobile key switch testing system.

Description

technical field [0001] The invention relates to a test device for testing the performance of an automobile key switch, more specifically, the invention relates to a test system for an automobile key switch and a test method for testing the performance of an automobile key switch using the test system for an automobile key switch. Background technique [0002] With the improvement of people's living standards, people's demand for vehicles is increasing, and at the same time, they have higher requirements for the quality and safety of cars. The car key switch is one of the important electrical components in the car, and its performance directly affects the performance of the whole car. Therefore, before the assembly of the whole vehicle, it is necessary to test the key switch of the car to judge whether the mechanical and electrical properties of the switch meet the requirements. [0003] In the prior art, manual testing and pneumatic testing are usually used for testing auto...

AI Technical Summary

Problems solved by technology

The method of manual testing is: connect the car button switch to the circuit of the regulated power supply and the light-emitting diode, and manually record the switch data through the operator pressing the switch and observing the light-emitting diode on and off. This method not only improves the test time, but also increases the labor cost of the enterprise

The pneumatic device completes the action of the button through the cylinder. Since the pneumatic device is an open-loop control system, it cannot accurately control the stroke of the pressing switch and the magnitude of the loading force, which can easily cause damage to the switch and affect product quality.

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