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MCU type intelligent PIR sensor signal processing device

A sensor signal and processing device technology, which is applied in the field of intelligent processing of human pyroelectric sensor signals to achieve the effects of improving system stability, realizing control, and reducing peripheral auxiliary devices of the system

Active Publication Date: 2017-02-01
SUZHOU HUAXIN MICROELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the main purpose of the present invention is to solve the problems of intelligent processing of sensor signals, especially pyroelectric infrared sensor signals, and miniaturization of the system

Method used

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  • MCU type intelligent PIR sensor signal processing device
  • MCU type intelligent PIR sensor signal processing device
  • MCU type intelligent PIR sensor signal processing device

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Embodiment Construction

[0024] In view of the deficiencies in the prior art, the inventor of this case was able to propose the technical solution of the present invention after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.

[0025] figure 2 It is a structure diagram of a PIR sensor signal intelligent processing device proposed by the embodiment of the present invention, as figure 2 As shown, the device described in the embodiment of the present invention includes: an ultra-high input impedance interface circuit, a Sigma-Delta ADC, a digital bandpass filter, a microprocessor (MCU), an I2C interface circuit, a bandgap reference circuit, and a high-speed oscillator OSC and low-speed oscillator OSC. After the PIR signal is input, it is processed by an ultra-high input impedance interface circuit, a Sigma-Delta ADC, a digital band-pass filter, and a microprocessor, and then output for subsequent intelli...

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Abstract

The invention discloses an MCU type intelligent PIR sensor signal processing device which comprises an ultrahigh input impedance interface circuit, a Sigma-Delta type ADC, a digital bandpass filter, a microprocessor, an I2C interface circuit, a band gap reference circuit, a high-speed oscillator and a low-speed oscillator. A signal of a PIR sensor is sequentially processed through the ultrahigh input impedance interface circuit, the Sigma-Delta type ADC, the digital bandpass filter and the microprocessor; the microprocessor processes output data of the digital bandpass filter, and advanced filtering and functional control are achieved in a software mode. The I2C interface circuit is connected with and communicated with other peripheral hosts, and intelligent processing and control are achieved. By means of the MCU type intelligent PIR sensor signal processing device, an application circuit can be simplified, systems stability can be improved, and intelligentization and microminiaturization of equipment in the smart home field in the Internet of Things are achieved.

Description

technical field [0001] The invention relates to an integrated circuit, in particular to a method and device for intelligently processing signals of a pyroelectric sensor of a human body. Background technique [0002] At present, the Internet of Things industry is one of the strategic commanding heights of the world's economic and technological development. The Internet of Things technology covers various applications from sensors, controllers to cloud computing. Smart home is one of the important components and development directions of the Internet of Things. Smart home connects various devices in the home (such as audio and video equipment, lighting systems, network appliances, etc.) . [0003] Pyroelectric infrared sensors can effectively detect moving infrared radiation sources in sensitive areas at room temperature. This technology is very suitable for application in the smart home field in the Internet of Things, used to detect human activities and realize various au...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/34
CPCG01J5/0025G01J5/34Y02B20/40
Inventor 陈志明石万文魏小康江猛韩红娟
Owner SUZHOU HUAXIN MICROELECTRONICS
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