Pyroelectric human body transducer-based direction recognition device and recognition method thereof

Abstract

The invention discloses a pyroelectric human body transducer-based direction recognition device and a recognition method thereof. The pyroelectric human body transducer-based direction recognition device comprises an optical system, a pyroelectric infrared transducer, a signal amplifier, a signal comparator and a voice prompt device, wherein a Fresnel lens is adopted by the optical system; only one pyroelectric infrared transducer is available; the signal comparator is provided with two output ends TG1 and TG2; the TG1 and the TG2 are connected with the voice prompt device respectively. The pyroelectric human body transducer-based direction recognition device and the recognition method thereof have the beneficial effects that a double-probe recognition effect or an effect that a single probe is matched with a strong signal processor is achieved through a physical isolation and probe output signal analysis combined mode, the cost is saved and the device can be used on general household or unsafe and unreliable occasions.

Description

technical field [0001] The invention relates to a direction recognition device based on a pyroelectric human body sensor and a recognition method thereof, and belongs to the technical field of direction recognition. [0002] Background technique [0003] At present, the passive human body sensing direction recognition that exists in the society adopts dual-probe sensing, and the sensing information is extracted from the two probes for comparison. There are two defects: 1. It increases the hardware cost of the product and uses two sets of passive Human body induction probe and its auxiliary circuit; 2. The consistency of the hardware is not guaranteed. If the device parameters on any side are unbalanced, the success rate of direction recognition is low or the direction recognition action cannot be completed at all. [0004] Contents of the invention [0005] The object of the present invention is to provide a direction identification device and identification method based...

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Problems solved by technology

[0003] At present, the passive human body sensing direction recognition that exists in the society adopts dual-probe sensing, and the sensing information is extracted from the two probes for comparison. There are two defects: 1. It increases the hardware cost of the product and uses two sets of passive Human body induction probe and its auxiliary circuits; 2. The consistency of the hardware is not guaranteed. If the device parameters on either side are unbalanced, the success rate of direction recognition is low or the direction recognition action cannot be completed at all.

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