UWB-based underground positioning and vital sign monitoring system

Abstract

The invention provides a UWB-based underground positioning and vital sign monitoring system. The UWB-based underground positioning and vital sign monitoring system comprises a target node, a plurality of anchor nodes and a positioning server; the target node comprises a first CPU, a first UWB module, and at least one sensor capable of representing vital signs; the output end of the sensor is connected with the first CPU; the first UWB module is connected with the first CPU; the plurality of anchor nodes and the positioning server are used for acquiring data from the sensor through the Ethernet and the plurality of anchor nodes and carrying out clock synchronization calculation based on a TDOA technology so as to position the target node. Compared with the prior art, a bidirectional communication technology is used. In the positioning communication process, other data can be transmitted back through a UWB wireless device on the arranged base station (anchor nodes), so that the base station is relatively low in manufacturing cost, good in anti-interference performance, ultra-low in power consumption, comprehensive in information and particularly suitable for an underground long and narrow structure.

Description

technical field [0001] The invention relates to an underground positioning and vital sign monitoring system. Background technique [0002] my country is a big country in coal mining, and coal is an important energy source in our country. The coal production industry is a high-risk industry, and various accidents plague the safety production of coal mines. The harsh working environment and overloaded physical labor seriously threaten the health of underground workers. Real-time monitoring of abnormal health conditions of underground personnel is of great significance for preventing accidents, improving production efficiency and management level, and can also provide important information for emergency rescue. The mine personnel positioning system is one of the six major systems for coal mine safety and risk avoidance, and plays an important role in ensuring mine safety production. [0003] At present, the mine personnel positioning system mainly adopts RFID card identifica...

AI Technical Summary

Problems solved by technology

Identification and positioning based on RFID cards is an area positioning technology, which can only identify whether people pass through a certain area, and cannot accurately locate people in the area

The radio signal positioning technology is based on the transmission signal attenuation RSSI or transmission time of the radio signal in the mine. Since the radio signal is easily affected by the size, shape, roughness of the roadway, obstacles and other factors during the transmission process, the signal attenuation model is extremely complicated. , the positioning accuracy is low, and the current radio signal positioning system still has problems such as large communication terminal equipment, many auxiliary equipment, and high system construction and maintenance costs.

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