Charge quantity measuring equipment with alarm function

Abstract

The invention provides charge quantity measuring equipment with an alarm function which comprises an electrostatic simulation mechanism. The electrostatic simulation mechanism comprises a DC high voltage power supply, an energy storage capacitor, a metal ball and an electrostatic conductive plastic sheet, wherein the DC high voltage power supply and the energy storage capacitor are mutually connected in parallel, a positive terminal of the energy storage capacitor is connected with the metal ball through a switch, and the electrostatic conductive plastic sheet is adhered on the surface of themetal ball through an electrostatic conductive adhesive. The electrostatic simulation mechanism is provided with a sampling circuit, a measuring mechanism and a display screen, wherein the sampling circuit is connected with the measuring mechanism in parallel, the sampling circuit is composed of an input wire, a fixed-value resistor and an output wire which are sequentially connected, the measuring mechanism is a digital oscilloscope, the digital oscilloscope is connected with a sound-light alarm, and both the digital oscilloscope and the sound-light alarm are connected with the display screen. The equipment measures the quantity of charges, which flow to the ground during the process of electrostatic discharging to the ground, of an object, and gives out an alarm signal when the charge quantity exceeds an alarm threshold.

Description

technical field [0001] The invention relates to the field of electrostatic measurement, in particular to a charge measurement device with an alarm function. Background technique [0002] In flammable and explosive places, human body static electricity is an important source of danger for fires and explosions. Grounding is one of the important ways to eliminate static electricity. Therefore, workers in flammable and explosive places must release human body static electricity in time. The main way to release static electricity from the human body is to use a human body static discharge device. An important indicator for evaluating the safety of the human body electrostatic discharge device is the amount of charge flowing to the ground during the process of the human body electrostatic discharge device discharging static electricity to the ground, which is called the amount of transferred charge, expressed by Δq. According to the law of electrostatic discharge, the larger Δq i...

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Problems solved by technology

[0003] Aiming at the problem that the existing charge measurement method cannot accurately measure the Δq value, the present invention provides a charge measurement device with an alarm function

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