Positioning system based on laser intrusion detector array

Abstract

The invention discloses a positioning system based on a laser intrusion detector array, wherein the system relates to the field of Internet-of-things application. A sensor array which is arranged in an environment comprises a plurality of laser intrusion detectors which are respectively composed of a transmitting end and a receiving end. The transmitting ends and the receiving ends of the plurality of laser intrusion detectors are equidistantly arranged in a face-to-face manner. The plurality of laser intrusion detectors are arranged in a transverse direction and a longitudinal direction, thereby forming a detector network. In the sensor and the sensor array in the environment, the receiving ends of the laser intrusion detectors are connected with a signal acquiring circuit. The signal acquiring circuit is connected with a microprocessor circuit through an SPI serial interface. A man-machine interface circuit comprises a PC and an RS485 interface chip which are connected with each other. Furthermore the microprocessor circuit is connected with the PC through the RS485 interface chip. The positioning system does not require holding of certain positioning equipment by a positioned person or object and utilizes active positioning technology. Furthermore the laser has advantages of high reliability and high interference resistance.

Description

technical field [0001] The invention relates to the application field of the Internet of Things, in particular to a positioning system based on a laser beam detector array. Background technique [0002] Positioning technology is the basis for the application of Internet of Things systems such as intelligent security in indoor and outdoor spaces in large public places, smart homes, and smart communities, and has very broad application prospects. [0003] The current common positioning technologies in a specific area are mainly based on Bluetooth, WLAN, ultrasonic, GPS systems, etc. A common feature of these technologies is that they need to have a signal source and a signal receiver. At the same time, these positioning technologies require the person or object to be positioned to hold some kind of positioning device, so they are passive positioning technologies. In order to obtain positioning-related services in such a positioning system, it is necessary to carry a positioni...

AI Technical Summary

Problems solved by technology

To obtain positioning-related services in such a positioning system, it is necessary to carry a positioning device at all times, which is suitable for indoor navigation based on mobile phones and other handheld devices in large public places, but it is not convenient enough for some applications of the Internet of Things system , and it is difficult for intelligent security to realize the discovery and positioning of prevention and control objects

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