The handheld instrument and positioning method are suitable for accurate positioning of coal miners

Abstract

The invention discloses a handheld instrument suitable for accurate positioning of coal mine personnel. The handheld instrument comprises a shell, a power supply, a voltage conversion circuit, a UWB radio frequency chip, a power amplifier, a UWB signal receiving and transmitting antenna, a microcontroller, a Bluetooth communication module, a Bluetooth signal receiving and transmitting antenna anda touch display screen. Three working modes are provided to adapt to search and rescue requirements under different conditions, accurate positioning of the label/base station is achieved by effectively combining the three working modes, and search and rescue of personnel under a mine are facilitated; meanwhile, parameter configuration, operation management and firmware updating are carried out onthe labels/base stations in combination with the Bluetooth communication module, daily management is facilitated, the positioning precision of other labels can be improved by reasonably setting the working mode of each label in the search and rescue process, and the electricity consumption of the labels is reduced.

Description

technical field [0001] The invention relates to the technical field of coal mine scene positioning, in particular to a hand-held instrument suitable for accurate positioning of coal mine personnel and a positioning method. Background technique [0002] For the current coal mine personnel positioning system, more than 99% of the solutions on the market use UWB technology. This system includes several equipment roles, namely positioning identification card, positioning base station and position calculation engine. The system is mainly used to monitor the location of personnel. In daily operation, functions such as attendance record and personnel entry and exit management in dangerous areas can be realized through the location; Search and rescue. [0003] However, when a dangerous situation occurs, it is very likely that the positioning base station or the communication network is damaged. At this time, the position calculation engine cannot obtain the personnel position becau...

AI Technical Summary

Problems solved by technology

[0004] First, only the personnel tags within the area can be identified, and the searched tags / base stations cannot be managed

[0005] Second, the search and rescue mode is single

When the base station is damaged, the search and rescue function cannot be realized; when there are many positioning identification cards, the rate of missing cards is high

[0006] Third, lack of precision

The search and rescue instruments on the existing market are all combined with the previous generation technology of coal mine positioning, such as zigbee, RFID, BLE, etc. These technologies themselves mainly perform area existence detection or distance calculation based on signal strength, and the ranging error is as high as tens of meters

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