Electric shock preventing device and electric shock preventing method for advertising board in rainy day

Abstract

The invention discloses an electric shock preventing device and an electric shock preventing method for an advertising board in a rainy day. The electric shock preventing device comprises a control unit, a power supply switching unit, a rain quantity sensor and a rain quantity measuring unit, wherein signal output ends of the rain quantity sensor and the rain quantity measuring unit are connected with a control input end of the control unit; a control output end of the control unit is in control connection with the power supply switching unit; the power supply switching unit comprises a storage battery and a relay main contact switch which is connected with a power supply loop of an advertising board lamp in series; and the storage battery is connected between the advertising board lamp and the relay main contact switch in parallel. According to the electric shock preventing device and the electric shock preventing method for the advertising board in the rainy day disclosed by the invention, a lamp power supply in the advertising board can be automatically opened and closed according to the rain quantity so as to effectively guarantee that people are safe when getting close to the advertising board, and prevent an electric shock accident from happening; the power supply switching unit can close the power supply of the advertising board lamp and the power is supplied to the control unit of the electric shock preventing device of the advertising board in the rainy day by the storage battery after raining. The device is simple and reliable in structure and is stable in performance.

Description

technical field [0001] The invention belongs to the field of anti-electric shock technology in rainy weather, and in particular relates to an anti-electric shock device and method for billboards in rainy weather. Background technique [0002] For the billboard leakage incident, the billboard did have leakage through the electric test pen, because it rained heavily that day, and the accumulated water overflowed the interface of the billboard, the insulation was not good, and the iron sheet of the billboard was conductive. At the same time, the leakage protector could not effectively realize Leakage protection will lead to a fatal accident caused by electric leakage on the billboard. At about 9:00 p.m. on April 7, 2012, Haikou was hit by heavy rainfall. A billboard on the Mingzhu Square bus stop near Xinyuan Hot Spring Hotel on Haixiu East Road, Haikou City leaked electricity, causing a passing man to be electrocuted to death. Therefore, it is particularly important to set a ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a billboard anti-electric shock device in rainy days to solve the problem that the existing billboards have

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