Method and device for testing anti-static device with near failure prompting function

Abstract

The invention relates to a method for a testing personnel static grounding device with a near failure prompting function, which comprises the following steps of: inserting a test signal wire into a tester and connecting the test signal wire and a tested object; measuring a voltage of the tested object; performing an operation of the measured voltage and a reference value to obtain an actual voltage; performing an operation to generate a resistance value of the tested object; and comparing the resistance value with the set upper and lower limit resistance values of the tested object. If the resistance value is between the upper and lower limit resistance values of the tested object, a lamp of which the test result passes is on; if the resistance value is more than the upper limit resistancevalue or less than the lower limit resistance value of the tested object, a lamp of which the test result does not pass is on; and if the resistance value is near to the upper and lower limit resistance values of the tested object, within a permeable resistance value range and within a preset value range of the upper limit resistance value or the lower limit resistance value, a lamp of which thetest result is near failure is on. The testing device comprises a tester.

Description

Technical field [0001] The invention relates to a test method and a test device of an electrostatic protection device, in particular to an automatic test method and a test device of an electrostatic protection device with a function of prompting near failure. Background technique [0002] Nowadays, personal ESD (electric static discharge) testing has become an important result in the ESD protection area (EPA). In many EPA areas, the testing of whether the resistance of shoes and wristbands is normal is carried out with traditional testers with simple functions. One of the most commonly used methods is to use a tester with a high resistance limit value and a low resistance limit value. When the measured resistance of the shoe or wristband is higher than the high resistance limit value, an LED that fails the high resistance test will light up. When the measured resistance of the shoe or wristband is between the high resistance limit value and the low resistance limit value, an LE...

AI Technical Summary

Problems solved by technology

However, the wearer only knows that the worn shoes and wrist straps have failed when the test is carried out. Before that, the said loader may carry the failed shoes and wrist straps for a period of time. Public security related accidents will lead to personnel negligence in public safety

[0004] In the traditional test, the static wrist strap and the shoe are usually tested separately, which is inconvenient and time-consuming, and even full of mistakes, especially the test of static shoes, usually with both feet standing on a metal plate at the same time , as long as any one of the feet passes the test, it is considered a pass, which is not correct! This is clearly required in international standards (such as ANSI / ESD S20.20 or IEC-61340), because it is impossible for a person to walk with both feet on the ground at the same time. If there is no grounding, then there may be static electricity and electrostatic discharge damage, which forms a huge potential loophole in the electrostatic grounding of personnel

[0005] In the above-mentioned prior art, the requirement for electrostatic protection is not high, and it is not compulsory, so it is easy to get away with it. Two feet are tested at the same time. As long as one foot is normal, it will pass. There are potential ungrounded loopholes and risks. The test is divided into two times, which is troublesome and time-consuming, and the control is not easy. Although the initial purchase cost is low, the potential risks are relatively large and errors are prone to occur.

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