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A two-wire anti-static wrist strap and real-time grounding monitoring device

A monitoring device and anti-static technology, which is applied in the direction of measuring device, grounding resistance measurement, and voltage-only measurement, can solve the problems of non-strict compliance and misjudgment, and achieve the effect of effective grounding and real-time monitoring of grounding resistance

Active Publication Date: 2020-10-02
BEIJING DONGFANG MEASUREMENT & TEST INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it can identify whether a person wears a wristband with a certain probability, this judgment standard is not measured by the size of the path resistance, and it has a relatively high probability of misjudgment, such as the wristband electrode bumping into something other than human skin. other items, it will also judge whether the person wears a wristband normally, etc.
Therefore, this mode does not strictly meet the relevant standards

Method used

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  • A two-wire anti-static wrist strap and real-time grounding monitoring device
  • A two-wire anti-static wrist strap and real-time grounding monitoring device

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as figure 1 As shown, this embodiment provides a two-wire anti-static wrist strap, and the two-wire anti-static wrist strap includes: a wrist strap continuous monitor and a two-wire wrist strap;

[0040] The two-wire wristband is used to be bound on the human wrist, and the inside of the two-wire wristband is provided with a metal electrode in contact with the skin of the human wrist;

[0041] The wristband continuous monitor is used to connect the two-wire wristband, ground the two-wire wristband, and monitor the voltage of the wrist of the human body at the same time.

[0042] Specifically, the two-wire wristband described in this embodiment has two electrodes in contact with the human body, and resistors are respectively connected in series between the two human body access electrodes and the two grounding plugs. Because the two-wire wristband has two electrodes in contact with the human body, it is theoretically possible to measure the resistance path between ...

Embodiment 2

[0071] This embodiment proposes a real-time grounding monitoring device for a two-wire anti-static wrist strap. The wrist strap is grounded while monitoring the voltage at the human wrist.

[0072] The wristband connection monitor includes a voltage source V0, a ​​voltage source -V0, a ​​resistor R1, a resistor R1', a resistor R2 and a resistor R2';

[0073] The voltage output terminal of the voltage source V0 is connected to one end of the resistor R1;

[0074] The other end of the resistor R1 is simultaneously connected to one end of the resistor R2 and the first input end of the two-wire wristband;

[0075] The other end of the resistor R2 is connected to one end of the resistor R2' and grounded;

[0076] The other end of the resistor R2' is simultaneously connected with one end of the resistor R1' and the second input end of the two-wire wristband;

[0077] The other end of the resistor R1' is connected to the voltage output end of the voltage source -V0.

[0078] The ...

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Abstract

The invention provides a two-wire type anti-static wrist strap. The two-wire type anti-static wrist strap comprises a wrist strap continuous monitor and a two-wire wrist strap. The two-wire wrist strap is used for being bound on the wrist of the human body, and a metal electrode making contact with skin of the wrist of the human body is arranged in the two-wire wrist strap. The wrist strap continuous monitor is used for being connected with the two-wire wrist strap to enable the two-wire wrist strap to be grounded, and meanwhile the voltage of the wrist of the human body is monitored. The invention further provides a real-time grounding monitoring device of the two-wire type anti-static wrist strap. By means of applying bipolar symmetrical voltages, the potential of measured staff can be prevented from being increased while the resistance is measured. The magnitude of the ground resistance can be monitored in real time and the voltage of the human body can be monitored in real time while the grounding function of the anti-static wrist strap is reserved.

Description

technical field [0001] The invention relates to the field of wrist strap grounding monitoring, in particular to a two-wire anti-static wrist strap and a real-time grounding monitoring device. Background technique [0002] The personnel on the anti-static workbench need to wear an anti-static wrist strap when working. The function of the anti-static wrist strap is to form a discharge path between the human body and the earth. The anti-static wrist strap is usually connected in series between the human body contact electrode and the grounding point. 1MΩ resistance, discharge the static electricity generated by the human body at any time. [0003] Many domestic and foreign standards stipulate that the anti-static wrist strap must be tested every day. If the product is very sensitive to static electricity, a real-time grounding monitoring system is required to ensure the reliability of the grounding. The wrist strap real-time grounding monitoring system needs to monitor in real...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/20G01R19/00
CPCG01R19/0084G01R27/20
Inventor 梅高峰季启政严明高志良张宇董纯
Owner BEIJING DONGFANG MEASUREMENT & TEST INST
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