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1. Overview of personnel positioning system underground in coal mines
Coal mine safety production concerns the lives and property safety of the people. Governments at all levels have always attached great importance to coal mine safety production issues and adopted a series of measures to continuously strengthen safety production work. Through continuous efforts, the safety production situation of coal mines has generally stabilized and improved in the recent period. However, due to various reasons such as weak foundations, the safety production situation of coal mines is still not optimistic. How to change the current management model of coal mine enterprises for the backward personnel in underground mines, and how to realize management modernization and informatization have become the concerns of all coal mine enterprises. Therefore, the establishment of informatization and management with disaster prevention, accident rescue, and electronic information management as the main objectives Intelligent construction is imperative.
The core identification equipment of the underground personnel positioning management system of Mulan Coal Mine adopts the internationally advanced ML-RFID technology independently developed by Mulan Company. The ML-RFID technology uses the most advanced 0.18uM microwave chip technology, which makes the performance of RFID and Compared with the original microwave technology, it has been substantially improved. It has completely solved the identification and data transmission problems of long-distance, large-flow, ultra-low-power, and high-speed moving markers, and the cost is greatly reduced compared with the past. Low-frequency electromagnetic wave technology has the fatal weakness of short sensing distance and poor anti-collision ability.
The underground personnel positioning management system of Mulan Coal Mine can timely and accurately reflect the dynamics of personnel and equipment in various underground areas to the ground computer system, so that managers can grasp the distribution status of underground personnel and equipment and the movement trajectory of each miner at any time. For more reasonable scheduling management. When an accident occurs, rescuers can also quickly understand the location of relevant personnel based on the data and graphics provided by the underground personnel and equipment positioning system, and take corresponding rescue measures in time to improve the efficiency of emergency rescue work.
The downhole personnel and equipment positioning system is a comprehensive application system that integrates downhole personnel attendance, tracking and positioning, post-disaster first aid, daily management, etc., which integrates the top domestic identification technology, transmission technology, software technology and other top products and technologies. The most advanced technology, the most stable operation, and the most professionally designed underground personnel positioning system. The realization of this scientific and technological achievement will bring new opportunities for the safety production and daily management of coal mine enterprises as well as emergency first aid.
2. System function introduction
This system is suitable for the location recognition and tracking playback of underground personnel in coal mines, personnel attendance, overtime alarm, overcrowded alarm, restricted area alarm, personnel statistics and personnel rescue command.
(1) Staff attendance
It is possible to inspect and reflect the corresponding personnel information on authorized personnel’s entry and exit and arrival time, frequency of entry and exit, etc.; unauthorized personnel are prohibited from entering and call the police.
(2) Real-time underground situation query
1. Query the number of personnel and personnel information at a certain location in the well at any time;
2. The activity trajectory of each downhole personnel at any time in the downhole;
3. Query the actual location of one or more personnel, so that the dispatch center can quickly and correctly contact the personnel by telephone;
4. Inquire about a series of information such as the arrival/departure time and total working hours of relevant personnel at any location, and can supervise and confirm whether important inspection personnel (such as: gas detection personnel, temperature detection personnel, exhaust personnel, etc.) are on time and on time. Perform the testing and processing of various data at various points, so as to prevent related accidents caused by human factors as much as possible.
(3) Reflect the dynamic trajectory of underground personnel
The real-time dynamic distribution of underground personnel in the tunnel at all times, and the corresponding dynamic map is made according to the actual geographical situation of the underground, so that the underground situation is vivid and vivid at a glance;
(Iv) Statistical work report of various types of personnel
1. The production personnel’s downtime report, monthly attendance report, overtime report, leave or absence report and other management required basis and can generate salary report, etc.
2. Develop and count management personnel’s inspection report and so on.
3. Whether other personnel, such as visitors and inspectors, go to the designated area as required.
(5) Location search of accident personnel
In the event of an accident, it can immediately find out the specific location, number of personnel and information of the personnel in the underground, so that mobile identification devices can be adopted during rescue to more accurately and quickly identify the specific location and number of personnel in distress, and improve the efficiency of rescue and rescue Effect, minimize loss.
3. Introduction to System Features
1. System features:
Highly automated
Advanced network communication system
Geographic Information Display and Query System Based on GIS Technology
Complete data analysis system
Safe and reliable, work normally in harsh environments 24 hours a day
2. Main system parameters of underground personnel positioning products in Mulan Coal Mine
Long distance, the effective recognition distance is adjustable from 2 meters to 80 meters.
High anti-collision performance, adopting multiple anti-collision schemes, can identify more than 200 signs at the same time.
High speed, ML-RFID can move at a speed of more than 200 kilometers per hour.
High recognition reliability, using channel isolation technology, multiple devices do not interfere with each other;
Intelligent, two-way high-speed data exchange can be realized between RFID and transceiver, application is flexible, and data security is guaranteed.
Can realize directional and non-directional recognition.
High reliability, adapt to the working environment of industrial and mining (-40℃-85℃), waterproof and shockproof.
Low cost, all 0.18uM chips are used, and the cost is lower.
Ultra-low power consumption, healthier and safer.
There is no need to apply for and pay for the ISM microwave frequency band that is open worldwide.
Configurable microwave module working mode, adjustable transmission power;
High anti-interference, no special requirements for various interference sources on site.
3. The special performance of the system in the well
● The problem of the safe operation of the equipment itself in the underground: in view of the special environment and working characteristics of the underground, our equipment (signal transceiver) achieves: adopts a fully enclosed shell, a firm structure, and is anti-collision and anti-vibration. Fully sealed design, waterproof, moisture-proof, anti-corrosion and explosion-proof.
● The operation of the equipment must not affect the safety of the underground: the equipment has ultra-low power consumption, and the maximum peak power does not exceed 1 milliwatt.
● The problem that the working voltage of the system in the well is less than 18V DC
● The equipment adapts to various installation environment problems above and below the mine: the equipment has a very high degree of anti-interference, and basically has no requirements on the installation site, which guarantees the high reliability of the equipment operation and greatly simplifies the installation and maintenance workload.
● The entire system is designed as a “fool type”, with extremely low technical requirements for users, with simple and adjustable functions, automatic fault inspection functions, and so on.
● Simple construction and installation problems in the tunnel: The product adopts the direct wall-mounted type in the underground, and it can be connected to the DC power supply and the network cable connector. It is also very convenient and easy to change and add the underground detection point in the future. .
● Simplification of fault handling: When a machine fails, it can be directly replaced with a spare machine.
Four, system hardware equipment
Signal transceiver (card reader), signal sensor (long-distance electronic label), CAN bus (communication cable), control room, etc. and system software are used in combination.
Five, the upper computer software part of the system
This system is designed in accordance with the general technical requirements of AQ 6210-2007 coal mine operating personnel management system, AQ 6201-2006 general technical requirements of coal mine safety monitoring system and MT/T1008-2006 general technical requirements of coal mine safety production monitoring system software. The system and its software, identification cards, signal transceivers (each substation), and transmission interface shall comply with the provisions of this standard, and comply with the relevant standards of MT209, MT/T1004, MT/T1005, MT/T1007, MT/T1008, AQ6201, etc. It is stipulated that other equipment in the system shall comply with relevant national and industry standards, and shall be manufactured and complete in accordance with the drawings and documents approved by the prescribed procedures.
The system connects the underground substations to the ground transmission interface through the communication cable. The system can accommodate the identification card with the maximum number of 8000 and 32 substations. Each substation governs a certain area, so as to identify the location of the underground cardholder in a certain area.
The system adopts the combination of advanced radio frequency identification technology, digital communication CANBUS technology, computer control, and computer network technology to better solve the problem of identification of moving targets such as underground coal mine personnel management and vehicles.
The system software adopts the integrated management system of data collection and information processing developed by Microsoft’s Visual C++ 6.0. This system uses SQL Server 2000 database data, and the collection server and the client display are run separately to ensure the continuity and reliability of the work. The operating platform is Microsoft Windows 2000 Server/XP/2003 and other operating systems.
Six, the working principle of the system
First of all, install a card reader at the entrance of the company and the route that the personnel and vehicles must pass through (keep a certain distance between the exit and the entrance reader to identify the card reading sequence), and the authorized personnel wear a signal sensor (electronic tag). When entering and exiting the enterprise passing by the signal transceiver (card reader), the signal transceiver will immediately sense the signal and upload it to the computer in the control center immediately. The computer can immediately determine the specific information (such as: who it is, where it is, Specific time), and display it on the large screen of the control center or computer display screen and make a backup for the control of personnel access and attendance.
At the same time, place several signal transceivers (remote card readers) in the various tunnels and the channels through which all personnel may pass. Connect to the computer in the ground control center (control room) through the network wiring (CAN bus). At the same time, a signal sensor (electronic tag) is worn on each person who goes down the well. When the person who goes down the well enters the well, as long as they pass or approach any signal transceiver placed in the doorway or tunnel, the signal transceiver will immediately sense the signal. At the same time, it is uploaded to the computer in the control center immediately, and the computer can immediately determine the specific information (such as: who, where, and the specific time), and display it on the large screen of the control center or the computer display screen at the same time. For backup, the administrator can also click on a certain location in the underground according to the distribution diagram on the large screen or on the computer, and the computer will then count and display the personnel in this area. At the same time, the computer of the control center will sort out various attendance reports of each person who went down during this period (such as attendance rate, total attendance time, late/early leaving records, non-attendance time, etc.) according to the personnel entry and exit information for a period of time. In addition, once an accident occurs underground, the personnel at the accident site can be found immediately based on the personnel distribution information in the computer, and then special detectors can be used to further determine the location of the personnel at the accident site to help rescuers rescue them in an accurate and rapid manner Trapped personnel. The management principles of mine carts and other equipment are roughly the same.
System working principle diagram
1. Enterprise import and export control and personnel attendance
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Schematic diagram of attendance of import and export personnel of enterprises
2. Schematic diagram of underground personnel positioning
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System structure simulation diagram
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Schematic diagram of downhole system
Seven, system design description
This system follows the principle of “unified sensor distribution, unified equipment, unified management”, and implements the “one person, one sensor” system according to the permission of staff and teams. The sensor can be regarded as “induction certificate” and “tunnel access certificate” . The specific plan is as follows:
(1) The coal mine production unit installs a certain number of signal transceivers in all tunnels, and the specific location is determined according to the site conditions to meet the radiation area.
(2) The coal production unit issues and equips the relevant personnel with sensors, which should be carried with you.
(3) When sending the sensor, log in the basic information of the employee corresponding to the sensor, including name, age, gender, team, type of work, position, photo, etc., in the system database.
(4) The sensor will become effective after the safety production department authorizes the sensor. The scope of authorization includes: the employee can be qualified to enter the tunnels of the enterprise and the work surface, the aging, failure, and loss of the sensors, etc., to prevent irrelevant and illegal persons from entering the enterprise or tunnels;
(5) People who enter the enterprise or tunnel must wear sensors. When the person enters the enterprise or passes through the identification monitoring point of the tunnel, he is immediately recognized by the system, and through the information exchange of the system network, the road section, time and other information passed by the person are transmitted to the security monitoring center for record, and can be recorded in the geographic information at the same time A prompt message appears on the wall of the large screen, showing the name of the passing person. If the sensor number that is sensed is invalid or enters a restricted channel, the system will automatically alarm, and the security monitoring center staff on duty receives the alarm signal and immediately executes the relevant safety work management procedures.
(6) Once a safety accident occurs in the tunnel, the safety monitoring center can know the basic situation of the trapped person in the first time. The rescue team uses a mobile long-distance identification device to easily detect the location of the person in distress within a range of 10 meters. Safe and efficient operation of ambulance work.
After-sales service:
Suzhou Mulan Electronics Co., Ltd. promises to
1. Lifetime maintenance is free, and technical guidance is provided. Once a failure occurs, the equipment can be quickly replaced; if it exceeds one year, the corresponding cost will be charged.
2. Help solve the fault within 7 working days (in case of force majeure, it can be negotiated); provide remote technical guidance within one working day of receiving the repair request;
3. The overall construction period of the system can be completed within 30 working days
4. If you are not satisfied with the current system, we can tailor products for you with short cycle, low price and good quality.
contact us:
Mailing address: Building 1, Industrial Building, No. 625, Binhe Road, High-tech Zone, Suzhou City, China
Phone: (86)-0512 -87655880
Company Fax: (86)-0512-87655879
Service Hotline: (86)-0512-87655880
Email: [email protected]
QQ: 909458011
MSN: [email protected]
Website: http://www.mlrfid.com
Copyright Notice
The copyright of this technical solution belongs to Suzhou Mulan Electronic Technology Co., Ltd. Without written permission, no institution or individual may quote it in any form, otherwise Suzhou Mulan Electronic Technology Co., Ltd. reserves the right to pursue legal responsibility.
Hope to cooperate sincerely!
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