Development of a Kind of Mine Staff Management System

Designing the mine staff management system based on the RFID technology and GIS technology. The personnel ID information can be collected by the locating substation and transmitted to monitor center by the wireless network and cables. User’s personnel ID information which is collected by the locating substation can be used to check the staff attendance and offer the rescuer some information with the trapped victims.


Introduction
The secure producing situation of the coalmine is about the people's life and property's safety, the central committee and all levels of governments correlation department give highly takes with vigorously to support. In general, the present secure producing situation of the coalmine has continued to tend toward relaxation through constant efforts, due to the various causes like the weak basis, the secure producing situation of the coalmine is very grim [1] . According to statistics, over the past few years, the annual death toll of the coalmine accidents have averaged about 5 thousands, among so many accidents, 80 percent is gas accident. So enhancing the inner staff management play a key role in preventing gas accident from occurring in the colliery. At present, the management of worker underground is inconvenience. The Persons distributing information who are working in underground coal mines are not monitored effectively by administrators. Once accident occurs, rescue is inefficient because of not enough information of the trapped coal miners [2] .
We have analyzed some recent serious accidents which happened in coal mines, and find some features as follows: (1) There is poor communication between the managers and the persons in underground workplace of coal mine; (2) The manager staff in the office can't know the situation of the people in the underground in time; (3) Once accident takes place, rescuers can't confirm where the victim is in trouble, it will be obstruction to the rescue.
In order to suitably deal with the relation between safety and production, and accurately perform safety supervision and people management, we have developed the mine staff management system.

Study on Architecture of Mine Staff Management System
The System's Functional Definition and the Principle of Design. Mine staff management system is a comprehensive management system involves computer software, data base, electronic circuit, safety power supply, data communication and RFID and so on, so it makes full preparation in stability, reliability and the anti-interference.
In the design and implementation of the mine staff management system, several issues such as cost, universal performance, and complicated circumstance are taken into consideration, and then give the design of mine staff management system based on RFID system consist of many card reader.
This system has following functions: A. People and vehicle position checking and tracking; B. Demography and attendance; C. The management for safety monitoring; D. Work overtime alarm and management; E. Data statistics, historical data query and tracing curves browse; F. Specific regions management; G. Underground worker's map display function; H. Information sharing with network.
The Systemic Constitution and the Working Principle. Mine staff management system consists of the facilities on the ground and the underground equipment.
The facilities on the ground are composed primarily of monitor host, transport interface, switchboard, printer, the lightning conductor and so on.
The underground equipment is composed primarily of card reader, tag, BFDZ-Z2A (N) power supply, explosion-proof power supply boxes and so on. The tag features low power and high performance, upgrade easily, anti-jamming and excellent security. Tag sends out continuing RFID digital signal when being used. Card reader is used for receiving data of tag, sensor, and other Wireless Repeater and transmitting the data which have been processed to the other Repeater, and finally the data are transported to the locating substation by the means, then the data are transported to the monitor host by FSK network [3] . At the same time, the card reader receives the signal from the tag and the relay station, then converts it into digital information and stores the digital code and receive time on the data base; Finally, These data are transmitted to the host computer through cables.
The working principle of system: First of all, fixed card readers, power supplied by the monitoring station, specific quantities and locations depending on the actual working conditions and the objective should be installed in the mine tunnels and passages where the crews pass through.
Card readers, combined wire and wireless allocation, will be connected to the computers in the ground control center by cable, optical fiber and wireless network.
As for workers, an electronic tag has to be placed in their belongings, when workers go down into the tunnel and approach to anyone of the signal transceivers placed nearby, the card reader will receive a signal and then send the corresponding signal to the computer in the control center. Specific information, such as name of the worker, location and time will be acquired and displayed on the main interface of the software in the control center; the administrator will obtain the working status of the specific workers or vehicles by the location displayed on the monitor.
What's more, the activity of the personnel for a period of time will be received. Attendance sheets and work condition sheets can be sorted out according to the activity record. Once there happens an accident, the locations and workers involved in will be easily discerned based on the information supplied by the system. Besides, special detector can be used to make further conformation so as to improve the rescue efficiency greatly [4,5] .

Mechatronics and Information Technology
The systemic constitution as fig. 1: Fig. 1. Mine staff management system component plot

Implemented with Technologies
The Frameworks of Underlying Technologies. The underlying technology uses the RFID technology, adopts new security design, and can realize reliable full-duplex communication. It features far operating distance, environmental adaptability, excellent security, and users can adjust the identification distance according to actual situations in order to make identification more accurately [6] . Underlying system is composed by three major parts: the locating substation, wireless card reader and tag. The location substation is made up of 18V power supply, I/O interface and the power management, etc.; wireless card reader is made up of CPU, wireless communications, I/O interface, the power management and so on; tag is made up of CPU, wireless communications, I/O interface and so on. Fig. 2, the entire application system is composed by three major parts: 1) data base; 2) Monitoring services; 3) management services.

Technical Frame of the Application System. As shown in
Data base is used to store data of the application system [7] .
Monitoring system: Fulfils the data exchange of the service management system and hardware network system, and measure of the network equipment hardware automatically.
Service management system: Main function is target location, special region management, emergency rescue, attendance management, typing lists, GIS software and so on.  There are many some products on market, for example, KJ214 and KJ376, etc. But the system has a demonstrable difference, which adopted the mixed way that GIS combines with RFID [8,9] . Compared to the same products on markets: Table 1 The system compare with the like product in market Have difficulty in network grouping.

System installation and upgrade
System network adopts the design mixed with the wired mode and wireless mode, and it is flexible to build up, low cost, simple structure, so it is the perfect setting for any mine Not fit the complicated mine， expensive, and difficult construction.

Test Result
Build the application platforms and design the control software in accordance with the above method. This software adopts the module structure to ensure easy maintenance. As shown in fig. 3 is main images of the control system:

Summarize
The management system uses the RFID technology to locate the worker, and the network is seted up with wireless or cables. It realizes the date communication between the card reader and host by the FSK bus inspection, makes use of the comprehensive software system which based on GSI to display, and manages relevant information of the people and devices. This system is of great practical value.