Electricity approach alarm apparatus and method

Abstract

The invention discloses a proximity electric alarm device and a method thereof, comprising an electromagnetic field sensor, an induced current pickup module, an amplification module for a high power instrument, a power frequency detection filter module, a signal conditioning module, a processor, a button control module, a display module, Sound and light alarm module and power supply; The processor is used for sampling, frequency domain analysis and processing to the signal, calculates the corresponding electric field strength signal and the distance from the field source (transmission line), and displays it through the display module, and simultaneously according to The alarm threshold is used for sound and light alarm through the sound and light alarm module. The present invention can detect electromagnetic induction in a high-voltage and strong electromagnetic environment, and can notify whether there is a high-voltage charged object or a strong electromagnetic field nearby through a sound alarm signal, and quickly, safely and reliably remind the parties to pay attention to vigilance or quickly evacuate from a dangerous situation, effectively ensuring Personal and equipment safety issues.

Description

technical field [0001] The invention relates to the field of power frequency strong electric induction measurement technology and high-voltage engineering safety production, in particular to a near-electricity alarm device and a method thereof. Background technique [0002] Over the years, the number of serious injuries or deaths caused by electric shock accidents is very alarming, and it has become a major killer affecting social harmony and family happiness. According to the statistical analysis of accidents in recent years, it is found that the number of fatalities caused by electrocution accounts for 6.54% of all deaths. About every 150 million kWh of electricity consumption in my country causes one person to die from electric shock. In fact, industrial electricity, especially in the suburbs of cities, county towns and below, is mostly powered by overhead lines, and personal electric shock casualties are more likely to occur. According to the causes of electric shock ac...

AI Technical Summary

Problems solved by technology

However, when using insulating rods for near-electrical operation, the operator often causes electric shock accidents for staff due to the high operating distance and long insulating rods, causing the insulating rods to touch adjacent live equipment, or make the safe distance between the tested equipment and the busbar occur

During the test of a substation in 2012, because the test personnel were unsteady when they removed the test insulation rod, the insulation rod was out of balance and fell to the adjacent live equipment, causing the test personnel to be burned by the arc drawn by the test line

[0004] At present, the measures adopted to solve the problem of high-voltage electric shock basically stay on the two means of strengthening publicity and using over-current protection devices to complete leakage protection. However, in actual production and life, it is basically impossible to prevent electric shock with high tension all the time. , especially the induction electric shock in the high electromagnetic environment is difficult to prevent

At the same time, the action of the overcurrent protection device is closely related to the actual power system operating state, operating mode, and calculated action setting value. It is difficult to formulate a working current threshold suitable for the safe operation of people and equipment in different situations.

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