Human body infrared positioning apparatus and method facing to wireless sensor network

A wireless sensor, human body infrared technology, applied in the field of wireless sensor network technology and human body target positioning and tracking, can solve problems such as modes that cannot support measurement, large measurement errors, large measurement errors, etc., to facilitate large-scale layout and positioning. High precision, low cost effect

Inactive Publication Date: 2008-12-17
SUN YAT SEN UNIV
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Problems solved by technology

The disadvantage of the method of calculating the target distance based on the received signal strength is that the consumption of battery power will also cause changes in the signal strength, so the measurement error is large
The disadvantage of the method based on the time difference between the received signal and the transmitted signal is that: due to the relatively fast propagation speed of the electric wave in the air (3*10 8 m/s), as long as there is a small error in

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  • Human body infrared positioning apparatus and method facing to wireless sensor network
  • Human body infrared positioning apparatus and method facing to wireless sensor network
  • Human body infrared positioning apparatus and method facing to wireless sensor network

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Embodiment Construction

[0055] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0056] like figure 1 As shown, the human body infrared positioning device of the wireless sensor network includes a CPU and a radio frequency module, a sensor module, an address dial switch, a serial port, a power supply module, and the like. Among them, each sensor module includes 3 pyroelectric infrared sensors, and each pyroelectric infrared sensor has a special Fresnel lens coding design method. The pyroelectric infrared sensor plus the Fresnel lens can accurately detect the infrared light emitted by the moving human body with a wavelength of about 10um, which has the advantages of low cost, low energy consumption, and wide detection range. When detecting and locating, the measured target does not need to carry any device. The internal functional block diagram of the sensor module is attached figure 2 As shown, the infrared light emitted by the human body is f...

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Abstract

The invention relates to the human body target positioning and tracking field, in particular to a human body infrared detection and positioning device and a method based on a wireless sensor network. The device comprises a CPU, a radio frequency module, a sensor module, an address DIP switch, a serial port and a power supply, wherein, the sensor module comprises three pyroelectric infrared sensors. The method comprises the following steps: the method for re-dividing and coding of the visual fields of a plurality of ordinary Fresnel lenses and the method which is applicable to the cluster head dynamic selection of the wireless sensor network, etc. The device and the method can be widely applied in the indoor human body target positioning and the tracking, such as, the monitoring of whether the lifestyle habits of old solitary people are normal or not, the positioning and the tracking of an invaded target in the security, etc.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks and the field of positioning and tracking of human body targets, in particular to a human body infrared positioning device and method for wireless sensor networks. Background technique [0002] Human body detection and positioning are common key technologies and research hotspots in the fields of intelligent monitoring, advanced human-machine interface, human motion analysis, human behavior understanding, etc., and have extensive application value in disaster relief, security and medical monitoring, etc. . Wireless sensor network is the result of the condensation and development of sensor technology in the direction of miniaturization, networking and universalization. It is a new type of perceptual computing environment with wide coverage, high distribution density, strong fault tolerance and wide adaptability. The extension and expansion of the physical world has had a wide and ...

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Application Information

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IPC IPC(8): G01S5/16G01S1/70
Inventor 申柏华王国利黄鑫侯超钧黄超
Owner SUN YAT SEN UNIV
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