ESD (Electro-Static Discharge) detection system and detection method for machine vision system

Abstract

The invention provides an ESD detection system for a machine vision system, the machine vision system comprises a light source and a light source controller, the ESD detection system is used for detecting the anti-static effect of the light source and the light source controller, and the ESD detection system comprises an ESD electrostatic generator, a detection controller and a line scanning camera, the detection controller can control the ESD electrostatic generator to conduct electrostatic discharge on the light source and the light source controller according to detection requirements, the line scanning camera is used for shooting towards the light source and sending collected images of each row to the detection controller, and the detection controller obtains gray information of the images of each row and judges the abnormal condition of the gray information. And the anti-static effects of the light source and the light source controller are further judged.

Description

Technical Field

[0001] The present invention relates to the field of electrostatic detection, and in particular to an ESD detection system and a detection method for a machine vision system. Background Art

[0002] Currently in the field of machine vision, machine vision light sources are generally based on adjusting parameters of light source controllers. Most visual light sources and controllers on the market will undergo ESD testing (electrostatic discharge testing), but the test results only judge the anti-static effect of the product by naked eyes, and cannot determine the static intrusion situation and the real anti-static effect of the light source and controller. Summary of the invention

[0003] The main purpose of the present invention is to provide an ESD detection system and a detection method for a machine vision system, so as to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: an ESD detection system for a machine vision system, the machine vision system includes a light source and a light source controller, the detection system is used to detect the anti-static effect of the light source and the light source controller, the ESD detection system includes an ESD electrostatic generator, a detection controller and a line scan camera, the detection controller can control the ESD electrostatic generator to perform electrostatic discharge to the light source and the light source controller according to the detection requirements, the line scan camera is used to shoot toward the light source and send each line of the collected image to the detection controller, the detection controller obtains the grayscale information of each line of the image and judges the abnormality of the grayscale information, and then judges the anti-static effect of the light source and the light source controller.

[0005] The detection method of the detection system of the present invention is as follows:

[0006] Step 1: Turn on the light source controller to turn on the light source;

[0007] Step 2: The ESD electrostatic generator performs electrostatic discharge on the light source and the light source controller as required;

[0008] Step 3: The detection controller controls the line scan camera to shoot the light source to obtain multiple lines of images of the light source;

[0009] Step 4: The detection controller obtains the grayscale value of each row of the image and analyzes the grayscale value to obtain abnormal grayscale value conditions;

[0010] Step 5: judging the anti-static effect of the light source and the light source controller according to the abnormal gray value.

[0011] Preferably, in step 4, the grayscale value abnormality is obtained by analyzing the change of the grayscale values ​​of adjacent images; in step 5, the smaller the change of the grayscale values ​​of adjacent images is, the better the anti-static effect of the light source and the light source controller is.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention generates static electricity through an ESD static electricity generator, obtains the light emission of a light source through a line scan camera, and judges the anti-static effect of the light source and the light source controller through the grayscale value in the obtained image. The operation is simple and the judgment is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the present invention. DETAILED DESCRIPTION

[0015] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0016] like Figure 1 As shown, an ESD detection system for a machine vision system, the machine vision system includes a light source and a light source controller, the detection system is used to detect the anti-static effect of the light source and the light source controller, the ESD detection system includes an ESD electrostatic generator, a detection controller and a line scan camera, the detection controller can control the ESD electrostatic generator to perform electrostatic discharge to the light source and the light source controller according to the detection requirements, the line scan camera is used to shoot toward the light source and send each line of the collected image to the detection controller, the detection controller obtains the grayscale information of each line of the image and determines the abnormality of the grayscale information, and then determines the anti-static effect of the light source and the light source controller.

[0017] The detection method of the detection system of the present invention is as follows:

[0018] Step 1: Turn on the light source controller to turn on the light source;

[0019] Step 2: The ESD electrostatic generator performs electrostatic discharge on the light source and the light source controller as required;

[0020] Step 3: The detection controller controls the line scan camera to shoot the light source to obtain multiple lines of images of the light source;

[0021] Step 4: The detection controller obtains the grayscale value of each row of the image and analyzes the grayscale value to obtain abnormal grayscale value conditions;

[0022] Step 5: judging the anti-static effect of the light source and the light source controller according to the abnormal gray value.

[0023] Specifically, in step four, when the light source or light source controller has static electricity, it will affect the change of current or voltage in the circuit, which will cause the brightness of the light source to change instantaneously. Therefore, by comparing the grayscale changes between the two pictures before and after, the anti-static effect of the light source and the light source controller can be judged. The smaller the grayscale change, the better the anti-static effect.

[0024] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An ESD detection system for a machine vision system, the machine vision system comprising a light source and a light source controller, for detecting the anti-static effect of the light source and the light source controller, characterized in that: The ESD detection system includes an ESD electrostatic generator, a detection controller and a line scan camera. The detection controller can control the ESD electrostatic generator to perform electrostatic discharge to the light source and the light source controller according to the detection requirements. The line scan camera is used to shoot toward the light source and send each line of the collected image to the detection controller. The detection controller obtains the grayscale information of each line of the image and determines the abnormality of the grayscale information, and then determines the anti-static effect of the light source and the light source controller.

2. An ESD detection method for a machine vision system, using the ESD detection system of claim 1, specifically comprising the following steps: Step 1: Turn on the light source controller to turn on the light source; Step 2: The ESD electrostatic generator performs electrostatic discharge on the light source and the light source controller as required; Step 3: The detection controller controls the line scan camera to shoot the light source to obtain multiple lines of images of the light source; Step 4: The detection controller obtains the grayscale value of each row of the image and analyzes the grayscale value to obtain abnormal grayscale value conditions; Step 5: judging the anti-static effect of the light source and the light source controller according to the abnormal gray value.

3. The ESD detection method for a machine vision system according to claim 2, characterized in that: In step 4, the grayscale value abnormality is obtained by analyzing the change of the grayscale value of the adjacent images; in step 5, when the change of the grayscale value of the adjacent images is smaller, it means that the anti-static effect of the light source and the light source controller is better.

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