Human body sensing chip used for infrared pyroelectricity

A technology of infrared pyroelectricity and human body induction, which is applied in electrical radiation detectors, sensing radiation of moving objects, measuring devices, etc. The effect of high integration, high integration and simple system

Pending Publication Date: 2018-02-06
SUZHOU HUAXIN MICROELECTRONICS +1
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  • Abstract
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Problems solved by technology

[0007] It can be seen from the above chart that the traditional infrared pyroelectric human body induction chip generally requires a number of resistors, capacitors and other components around the chip to cooperate with the chip to achieve some parameters or functions. Therefore, the traditional infrared pyroelectric human body induction chip tube Many pins, low integration, cumbersome system
In order to simplify the chip system, make it more integrated and perform better, the applicant applied for a human body sensor chip for infrared py

Method used

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  • Human body sensing chip used for infrared pyroelectricity
  • Human body sensing chip used for infrared pyroelectricity
  • Human body sensing chip used for infrared pyroelectricity

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Embodiment Construction

[0032] 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.

[0033] The human body induction chip for infrared pyroelectric proposed by the present invention, its integrated circuit part comprises differential analog-to-digital converter module, digital filter module, control circuit module, output circuit module; Pin area comprises signal input end, signal output end , the positive terminal of the power supply and the ground terminal;

[0034] specifically:

[0035] The differential analog-to-digital converter module is connected to the signal input terminal, and is used to receive the sensing signal, and output a digital signal after performing analog-to-digital conversion on the sensing signal;

[0036] The digital filtering module is c...

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Abstract

The invention discloses a human body sensing chip used for infrared pyroelectricity. The chip comprises an internal integration circuit and a pipe pin region. The integration circuit comprises a difference analog-to-digital converter module, a digital filtering module, a control circuit module, and an output circuit module. The pipe pin region comprises a signal input end, a signal output end, a power supply positive end and a grounding end. According to the invention, the chip is highly integrated; the system is simple; at least only four pipe pins are required; and miniaturation of the system is quite facilitated.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a human body induction chip for infrared pyroelectricity. Background technique [0002] The pyroelectric infrared human body sensor is an infrared signal that uses the body's own heat to convert into a weak electrical signal through the pyroelectric sensor. This weak electrical signal is amplified, filtered and other signal processing to achieve various control functions. s installation. Pyroelectric infrared human body sensor has a wide range of applications. It can automatically and quickly turn on various incandescent lamps, fluorescent lamps, buzzers, automatic doors, electric fans, dryers and automatic sinks. It is especially suitable for enterprises and hotels. , Shopping malls, warehouses and family aisles, corridors and other sensitive areas, or automatic lighting, lighting and alarm systems for safe areas. [0003] The infrared pyroelectric human body sensor chip is ...

Claims

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Application Information

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IPC IPC(8): G01J5/34G01J5/00G01J5/02
CPCG01J5/34G01J5/0025G01J5/02
Inventor 石万文陈志明
Owner SUZHOU HUAXIN MICROELECTRONICS
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