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Pyroelectric sensor for simultaneously outputting digital signal and logical judgment

A pyroelectric sensor and logical judgment technology, applied in the direction of electric radiation detectors, etc., can solve the problems of single trigger mode and high power consumption of data reading, and achieve the effect of reducing energy consumption

Pending Publication Date: 2019-05-21
DONGGUAN TRANESEN OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the related art, the pyroelectric sensor adopts a dedicated MCU chip to output a logic judgment signal or a pyroelectric sensor of a digital signal; but the prior art solution has the following disadvantages: the general MCU logic judgment output integrated sensor, and the trigger mode is single; 2. General-purpose MCU digital output integrated sensor requires consistent reading of data and high power consumption

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  • Pyroelectric sensor for simultaneously outputting digital signal and logical judgment

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Embodiment Construction

[0012] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0013] Such as figure 1 As shown, a pyroelectric sensor that simultaneously outputs digital signals and logic judgments includes a pyroelectric sensing element 1 and a micro control unit 2, and the output terminal of the pyroelectric sensing element 1 is connected to the micro control unit 2 The input terminal is connected; the micro-control unit 2 includes a main control circuit 2.1, an analog-to-digital conversion circuit 2.2, a logic judgment circuit 2.3 and a serial communication 2.4, and the input terminal of the analog-to-digital conversion circuit 2.2 is connected to the pyroelectric induction element 1, the output end of the analog-to-digital conversion circuit 2.2 is connected to the signal input end of the...

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Abstract

The invention relates to a pyroelectric sensor for simultaneously outputting a digital signal and logical judgement. The pyroelectric sensor comprises a pyroelectric sensing element and a microcontrolunit. The output end of the pyroelectric sensing element is connected with the input end of the microcontrol unit. The microcontrol unit comprises a master control circuit, an analog-to-digital converting circuit, a logical judging circuit and a serial communication unit. The input end of the analog-to-digital converting unit is connected with the output end of the pyroelectric sensing element. The output end of the analog-to-digital converting unit is connected with the signal input end of the master control circuit. The signal output end of the master control circuit is connected with the input end of the logical judging circuit and the input end of the serial communication unit. The output end of the logical judging unit outputs a logical judging signal. The serial communication unit outputs a digital signal. Compared with the prior art, the pyroelectric sensor has advantages of realizing number outputting of a sensing signal and outputting of the logical judgment, realizing an external chip awaking function without reading chip data of the pyroelectric sensor, and effectively reducing energy consumption.

Description

technical field [0001] The invention relates to the technical field of pyroelectric sensors, in particular to a pyroelectric sensor that simultaneously outputs digital signals and logic judgments. Background technique [0002] In the related art, the pyroelectric sensor adopts a dedicated MCU chip to output a logic judgment signal or a pyroelectric sensor of a digital signal; but the prior art solution has the following disadvantages: the general MCU logic judgment output integrated sensor, and the trigger mode is single; 2. General-purpose MCU digital output integrated sensors require consistent reading of data and high power consumption. Contents of the invention [0003] The present invention aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent. Therefore, an object of the present invention is to propose a pyroelectric sensor that reduces power consumption and realizes trigger logic judgment and digital signal output...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/10
Inventor 路卫华黄伟林
Owner DONGGUAN TRANESEN OPTOELECTRONICS CO LTD