Static human body position estimation device and method based on pyroelectric technology

Abstract

The invention relates to a static human body position estimation device and method based on the pyroelectricity technology. The device comprises a front end collecting module, a rotary transmission device and a data processing transmission module. The front end collecting module comprises a single-hole information modulation cover, a Fresnel lens and a pyroelectric sensor. The rotary transmission device comprises a stepping motor. The data processing transmission module comprises a data processing circuit, a wireless transmission circuit and a data storage circuit. The information modulation cover is used for adjusting the thermal infrared incidence amount of the human body. The Fresnel lens is provided with an induction region capable of enlarging the induction distance and generating bright and dark alternation. The stepping motor drives the front end collecting module to rotate on a fixing shaft at a certain speed and a certain angle, and the pyroelectric sensor is used for processing inducted human body thermal infrared energy signals through the data processing circuit. By the utilization of multiple pieces of measured angle information and in combination with a mature positioning algorithm, the position information of the static human body is estimated, and meanwhile the relative azimuth information of the static human body can be estimated through the single device.

Description

technical field [0001] The invention belongs to a human body positioning device, in particular to a static human body position estimation device and method based on pyroelectric technology. technical background [0002] The pyroelectric effect is to generate excess thermal charges on its own surface when its own temperature changes, and it only responds to the rate of change of its own temperature. In layman's terms, the pyroelectric effect is the inherent self-electric polarization phenomenon of certain crystals in nature caused by thermal changes. In essence, all sensors are energy-transforming devices. In this sense, pyroelectric infrared sensors are photothermoelectric converters of infrared radiation, which convert invisible infrared radiation energy into thermal energy and then into electrical energy. Measure. [0003] The most common and widely used is the dual-element pyroelectric sensor. The dual-element pyroelectric sensor has two sensitive elements in reverse se...

AI Technical Summary

Problems solved by technology

[0023] When the human body is still in the sensing area, the pyroelectric sensor will not sense the changing thermal radiation source, so it cannot detect the static human body

That is to say, it is impossible to estimate the position information of a static human body, and it is also impossible to recognize the infrared characteristics of a static human body.

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