High-precision key detection device and method based on LabVIEW platform

Abstract

The invention discloses a high-precision key detection device based on a LabVIEW platform. The high-precision key detection device comprises a product tool, a displacement mechanism, a sensor assembly and an industrial personal computer, wherein the product tool is used for clamping a to-be-detected piece; the displacement mechanism is located above the to-be-detected piece; the industrial personal computer comprises the LabVIEW platform; and the sensor assembly comprises a laser sensor and a pull pressure sensor. The method comprises the steps that a motion control module drives a servo motor, the servo motor drives the moving part of a displacement mechanism to move downwards, and the moving part walks to a preset pressing position, so that a pull pressure signal value is collected when the pull pressure sensor makes contact with the to-be-detected piece, and the laser sensor collects a relative displacement signal value. According to the invention, the servo motor slowly drives the pull pressure sensor to carry out a product pressing test, the pressing curve of the product can be obtained at one time, the on-off characteristics of the tested product can be displayed, the measurement precision is high, the measurement result is accurate and direct, the measurement efficiency is improved, the product quality is ensured, the device starts the test by one key, and the operation is convenient and easy to learn.

Description

technical field [0001] The invention relates to product button function detection in the field of automobile manufacturing, in particular to a high-precision button detection device and method based on a LabVIEW platform. Background technique [0002] With the development of the automobile industry, the safety and reliability of automobiles has always been an issue that consumers and manufacturers attach great importance to. The quality of the button functions of auto parts is directly related to the safety of the car, such as the function buttons on the steering wheel and the media buttons in the central control area. 1. The function of the rearview mirror adjustment button seriously affects the safety and stability of the car. Therefore, the function test of the button function of the auto parts becomes an indispensable part of the qualified test of the part. At present, the button function detection is difficult to accurately capture the signal when the button is turned o...

AI Technical Summary

Problems solved by technology

At present, the button function detection is difficult to accurately capture the signal when the button is turned on when the button is pressed down. For ordinary measurement, the position of the ruler when the button is turned on is read by a hand-operated scale. The product is disconnected, so the conduction point measured in this way is often unable to accurately obtain the conduction position within a certain range, and this detection method has low detection efficiency, high manual detection cost, single detection function, and cannot directly obtain specific data of the product. It is difficult to achieve a reliable guarantee for the quality of the product

Images