Solar battery-based passive positioning system

Abstract

The invention relates to a solar battery-based passive positioning system. The solar battery-based passive positioning system comprises a light source control module, a light source, an anchor node, awireless data acquisition module and a data processing module, wherein the anchor node comprises a solar battery, a signal processing module, a current detection and metering module, an anchor pointcontrol module, a visible light communication demodulation module and a wireless communication module. The anchor node controls the modules and judges whether the variation quantity of an electric signal output by the solar battery is more than a set threshold value or not; and when the variation quantity of an electric signal output by the solar battery is more than the set threshold value, the anchor node activates the visible light communication demodulation module and the wireless communication module and commands the visible light communication demodulation module to demodulate a digitalsignal transformed by a light signal and identify the serial number of the light source; meanwhile, the wireless communication module of the anchor node and the wireless data acquisition module of thepositioning system are commanded to perform communication. Meanwhile, the invention provides a positioning method implemented by the above positioning system. A shadow link shielded by a positioningtarget is detected by the solar battery and the position information of the positioning target is acquired.

Description

technical field [0001] The invention relates to a passive positioning system and method based on solar cells, belonging to the field of positioning. Background technique [0002] Today's positioning technology research has been very extensive, and the equipment applied is also very rich, mainly including video camera, infrared, Bluetooth, wifi, ultrasonic, visible light, etc. However, these technical devices all have some defects. For example, using video image recognition to locate targets is not suitable for relatively private spaces, infrared and ultrasonic positioning equipment are relatively expensive, and the positioning accuracy of Bluetooth and WiFi is not high. The most important thing is that these technologies need to be powered by an external power source before they can work. Therefore, the complexity of the installation of the positioning system is increased, and the post-maintenance cost of the positioning equipment is increased. [0003] In recent years, sc...

AI Technical Summary

Problems solved by technology

Due to the high cost of photodetectors, they are easily damaged, and require a regulated power supply to provide power, they are not suitable for large-scale applications.

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