Optical door magnetic sensor

A door magnetic sensor, enhanced technology, applied to alarms that rely on opening, alarms that rely on interference with short-wavelength radiation, anti-theft alarm mechanical activation, etc., can solve equipment theft, sensor false alarms, base station damage, etc. question
CN103700203BActive Publication Date: 2016-05-11CHINA TELECOM CORP LTD
7 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA TELECOM CORP LTD
Publication Date
2016-05-11

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a light-operated door magnetic sensor, which comprises a commutation unit, a voltage division unit and a voltage control unit, wherein the voltage control unit is connected with the voltage division unit and the commutation unit respectively; the voltage division unit is connected with the commutation unit; the commutation unit is provided with two connection terminals which are connected with a door control interface respectively; the voltage division unit is provided with a photosensitive device; the voltage of the connection point of the voltage control unit and the voltage division unit is reduced to turn off the voltage control unit in light environment; the voltage of the connection point of the voltage control unit and the voltage division unit is increased to turn on the voltage control unit in dark light environment. The light-operated door magnetic sensor can response to the light environment in a base station timely, the condition that a person opens a door to enter the base station or light is used can be effectively detected, and a power supply is not required to be mounted.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of automatic control, in particular to a light-controlled magnetic door sensor. Background technique

[0002] The environmental monitoring of mobile base stations often uses door magnetic sensors to detect whether someone enters the base station. Closed, the door magnetic switch is in a short circuit state; and when the door of the base station is opened, the door magnetic switch is in an open state. There are certain defects in this detection method. For example, some illegal intruders can enter the base station by breaking the door or destroying the wall without directly opening the door of the base station. Vicious incidents such as sabotage or equipment theft.

[0003] At present, some units try to use human body infrared sensors in the base station to detect whether someone enters the base station, but this kind of sensor is mainly designed for home or office use, and when the computer room of the base station ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More