Displacement detection method for valve element of linear electromagnetic valve

Abstract

The invention provides a displacement detection method for a valve element of a linear electromagnetic valve. The method involves the linear electromagnetic valve, a control unit and a monocular microscope camera. The displacement detection method includes the steps that firstly, the linear electromagnetic valve is placed below the monocular microscope camera and connected with the control unit; secondly, a coil of the linear electromagnetic valve is powered on, and the valve element is correspondingly displaced; the monocular microscope camera conducts real-time video acquisition on the end face of the valve element, and video frames are extracted from video streams to serve as objects to be researched; thirdly, noise processing is conducted on each acquired video frame; fourthly, the image definition values F of the video frames, obtained after noise processing, of the end face of the valve element of the linear electromagnetic valve are acquired through an image definition evaluation function, wherein F0 is used for representing an original image definition value; fifthly, displacement values corresponding to the image definition values are acquired through a displacement calculation formula, and therefore a data set formed by one power-on voltage and the displacement values is acquired. By the adoption of the method, the detection efficiency and the accuracy of the linear electromagnetic valve can be improved.

Description

technical field [0001] The patent of the present invention relates to a method for detecting the displacement of industrial components, in particular to a method for detecting the displacement of the spool of a linear solenoid valve. Background technique [0002] In the development of the manufacturing industry, the requirements for the precision and volume of the structure of many industrial components are getting higher and higher, so the high-precision measurement of the displacement of some industrial components in some industrial parts has become a must in the manufacturing industry. A problem faced. The displacement of the spool of the linear solenoid valve has a direct impact on the performance of the linear solenoid valve, which is required in the design of the linear solenoid valve. However, in the industrial field, it is necessary to detect the displacement of the spool installed in the linear solenoid valve. Since the field of view of the target object is very sm...

AI Technical Summary

Problems solved by technology

However, in the industrial field, it is necessary to detect the displacement of the spool installed in the linear solenoid valve. Since the field of view of the target object is very small, the actual displacement of the spool is also very small, so the displacement of the spool needs to be highly monitored. It is very difficult to measure the accuracy. At present, the method of detecting the displacement of the spool of the linear solenoid valve is not only time-consuming, but also has poor accuracy and is prone to misjudgment.

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