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Multifunctional sensor

A sensor and multi-functional technology, applied in the field of sensors, can solve the problems of complex processing circuits, high false alarm rate, high cost, etc., and achieve the effects of high detection sensitivity, high reliability, and simple structure

Inactive Publication Date: 2009-01-21
JIANGHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They are all two-dimensional or space detection, the output is an analog signal, the processing circuit is complex, the installation has specific requirements, and the false alarm rate of single technology detection is very high (80% to 90%), and in practical applications, dual detection technology or Multi-detection technology, so the processing circuit is very complicated and the cost is high

Method used

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Embodiment Construction

[0013] The present invention includes a signal detection circuit and a metal casing, the metal casing is composed of two mutually insulated first part metal casing 1 and second part metal casing 2, separated by insulating material 6 between them, in the A part of the metal shell 1 is provided with a stainless steel metal bracket 11, and the metal bracket 11 is provided with a copper conductive ring 10. The first part of the metal shell 1, the metal bracket 11 and the conductive ring 10 have good conductivity. A part of the metal shell 1 is connected to the ground wire 14; on the second part of the metal shell 2 vertically above the conductive ring 10, a soft metal wire 8 and a spring 7 are used to suspend a copper metal inverted cone corresponding to the conductive ring 10 body 9, the strength and rigidity of spring 7 should be moderate, can keep metal inverted cone 9 in suspension state, second part metal shell 2 is also connected with the signal input line 13 of signal detect...

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Abstract

The related multifunctional sensor comprises: a trigger-type signal detection circuit with output end connected to general I / O port of MPU, and a metal shell composed by a first and second metal shells insulated with each other. Wherein, arranging a metal frame with a conductive ring on the first shell to ground, using soft metal wire and a spring to hang a metal inverse-cone body on the second shell opposite to the ring. This invention is simple, has high reliability and sensitivity.

Description

technical field [0001] The invention relates to a sensor, in particular to a multifunctional sensor integrating vibration, touch and wire-cutting prevention functions. Background technique [0002] Currently commonly used anti-theft sensors include infrasonic sensors, ultrasonic sensors, microwave sensors, electric field distortion sensors, infrared grating sensors, pyroelectric infrared sensors, infrared laser sensors, etc. Among them, the infrasonic sensor, ultrasonic sensor, and microwave sensor mainly use the Doppler effect of the moving target to work; the electric field distortion sensor uses the moving object to break into the pre-arranged electrostatic field to make the electric field distorted; the infrared grating sensor and infrared laser sensor are all It uses the infrared beam to be blocked to generate an alarm signal; the pyroelectric infrared sensor works by detecting the infrared rays of a specific wavelength (9-10um) radiated by the human body. They are all...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B13/22H01H35/02H01H35/14
Inventor 张义涛叶杨婷王波
Owner JIANGHAN UNIVERSITY