Personnel positioning system

Abstract

The invention provides a personnel positioning system. The personnel positioning system comprises a personnel positioning communication base station (1), a personnel positioning portable terminal (2), positioning beacons (3) and a personnel positioning server (4), wherein the positioning beacons (3) are arranged at the fixed positions according to the needs, are provided with unique numbers related to installing position information and send number information periodically to the personnel positioning portable terminal in a wireless manner; the personnel positioning portable terminal (2) is carried by personnel, receives the number information sent by all the positioning beacons (3) in real time, obtains current position information by processing, displays the current position information to a carrier and sends the current position information to the personnel positioning server (4). The personnel positioning system provided by the invention has the advantages that the structure is simple, the number of types of equipment is small, and different positioning-accuracy requirements corresponding to different scenes can be met according to the needs.

Description

technical field [0001] The invention relates to the field of positioning and wireless sensing, in particular to a personnel positioning system. Background technique [0002] There are nearly a hundred domestic invention patents related to personnel positioning systems or methods, involving various technical systems such as RFID, Zigbee, Wi-Fi, and UWB, as well as various positioning technologies such as coding, field strength, and phase calculations. The basic architecture of these positioning systems are all fixed deployment positioning base stations, personnel carry positioning tags, and the positioning base station receives information from the positioning tags carried by personnel, and performs identification and positioning according to its field strength, phase, tag serial code and other information, identification and positioning The calculation of is done through the central server. This architecture is suitable for scenarios with fixed environments and high populat...

AI Technical Summary

Problems solved by technology

This architecture is suitable for scenarios with fixed environments and high population density, such as coal mines and factories. The disadvantages of this architecture are: (1) The improvement of its positioning accuracy depends on increasing the deployment density of positioning base stations. Since the network between base stations is mostly Through wired transmission methods such as optical cables and buses, it requires external power supply, which leads to a rapid increase in the investment required to improve positioning accuracy, the amount of engineering work such as cable erection, and the construction period.

(2) The positioning tags carried by the personnel are of low intelligence. Only the managers in the center can see the location of the personnel. The positioning tag bearers themselves cannot know the location information of themselves and their surroundings, and cannot realize the navigation function. People who are not familiar with the surrounding scenes cannot provide help, and those who enter or approach similar "restricted areas" cannot be notified in real time

(3) All calculations about location information rely on the central server. Once the server loses connection or crashes, the system will be paralyzed

However, (1) firstly, the system is highly complex and consists of up to 8 parts; (2) secondly, the construction of the system needs to lay optical fiber, bus and other wired transmission media, which requires a large amount of engineering and is difficult to deploy quickly. The mobile environment or harsh environment of the cable is difficult to apply; (3) the positioning of its mobile node depends on the matching calculation of the ground monitoring center. Once the system loses contact with the ground monitoring center, the terminal cannot be positioned. (4) its mobile The intelligence level of the node is low, the terminal does not have local real-time processing and display capabilities, the carrier of the mobile node cannot see his location, and thus does not have the ability to navigate, and it is useless to carry the mobile node even if he gets lost; (5) other The improvement of positioning accuracy needs to rely on training nodes to collect signals for each block in the roadway and establish model data. The operation is complex and the positioning accuracy is easily affected by the changing temperature and humidity, occlusion, and electromagnetic environment in the field environment.

To sum up, the system has high complexity, poor mobility, and does not have the characteristics of rapid deployment

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