Lightning protection structure of spherical video camera

Abstract

A lightning protection structure of a spherical video camera comprises a power supply interface lightning protection structure, a control interface lightning protection structure and a video interface lightning protection structure, wherein a discharge circuit formed by connecting a piezoresistor and a ceramic discharge tube of the power supply interface lightning protection structure is connected between two input ends of an alternating-current power supply. The control interface lightning protection structure is arranged at the position of an external control data interface of the spherical video camera and comprises a first-stage control lightning protection circuit and a second-stage control lightning protection circuit. The video interface lightning protection structure is arranged at the position of a video interface of the spherical video camera and comprises a first-stage video lightning protection circuit and a second-stage video lightning protection circuit. Different voltage overload schemes are adopted according to different structures and voltage characteristics of the interfaces so that lightning stroke can be effectively prevented from causing influence on elements in the video camera from the outside interfaces, and the spherical video camera can be guaranteed to work in a lightning area normally and continuously.

Description

technical field [0001] The invention relates to the technical field of monitoring cameras, in particular to a lightning protection structure of a dome camera equipped with a power interface lightning protection structure, a control interface lightning protection structure and a video interface lightning protection structure to prevent damage caused by lightning strikes. Background technique [0002] The dome camera is a front end of an intelligent camera, its full name is a high-speed intelligent dome camera, or an integrated high-speed dome smart dome, or simply a dome machine or a high-speed dome. The high-speed dome is the most complex camera front end with the best comprehensive performance in the monitoring system, and can adapt to high-density and most complex monitoring occasions. The dome camera is a highly integrated product that integrates the pan-tilt system, communication system and camera system. The pan-tilt system refers to the rotating part driven by the moto...

AI Technical Summary

Problems solved by technology

[0006] However, due to the damage caused by lightning to the camera in many ways, the high voltage generated by lightning can affect multiple components inside the camera through multiple interfaces between the outside and the dome camera, resulting in component damage

However, the existing dome camera does not have a comprehensive lightning protection structure for the external interface of the camera, resulting in poor lightning protection capability of the dome camera itself, and it is prone to failure and damage when lightning strikes occur, affecting video collection in the monitoring area

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