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Solution source: Shanghai Yiyade Software Technology Co., Ltd. (Cao Dongjin)
Overview:
The coal industry is a key industry with frequent occurrences of safety accidents in my country. In 2009 alone, the number of people killed in more than 10 incidents included:
On February 22, 2009, a gas explosion occurred in the fourth panel of the Tunlan Coal Mine of Shanxi Xishan Coal and Electricity Group, and 78 people were killed;
On April 4, 2009, a water penetration accident occurred in the Jinli Coal Mine of Tianyuan Company, Jiguan District, Jixi City, Heilongjiang, and 12 people were killed;
On May 30, 2009, a huge gas explosion occurred in Tonghua Coal Mine in Qijiang County, Chongqing City, killing 30 people;
On June 17, 2009, a water flooding accident occurred in Xinqiao Coal Mine, Zhongying Town, Qinglong County, Qianxinan Prefecture, Guizhou, and 16 people were killed;
On September 8, 2009, a fire broke out in the Wangjiayu Mine of Jinyuan Mining Company, Lingbao City, Henan Province, killing 13 people;
On September 9, 2009, 54 people were killed in a gas explosion accident at Xinhua No. 4 Mine in Pingdingshan, Henan;
… …
The geological storage conditions of China’s coal mines are complex, with a large number of high-gas mines and a low degree of mining automation. More than 95% of them rely on underground mining, and mining disasters occur frequently. Take 2005 as an example, the output of raw coal was 2.11 billion tons, 5,983 people died, and the death rate per million tons was 2.8l, almost 100 times that of the United States (the death rate per million tons in the United States was about 0.03). As the awareness of production safety and monitoring conditions have greatly improved, the mortality rate has been declining year by year. However, the death rate per million tons in 2009 was still as high as 0.892, and the death toll reached 2,700, which is still dozens of times that of developed countries. How to enhance production safety while increasing production capacity, and quickly and efficiently search and rescue in the event of an accident, thereby reducing the mortality rate is a problem that every mine manager needs to think about.
At present, large and medium-sized coal mines in my country have been equipped with various coal mine safety production monitoring systems. The application of these systems has improved the safety production status of coal mines in my country. However, there are still widespread difficulties in the management of personnel entering the well, and the personnel on the well cannot timely understand the dynamic distribution and operation of the personnel downhole. Once an accident occurs, it is impossible to accurately locate the location of the underground personnel, and it is difficult to carry out timely and reliable rescue. The efficiency of safety rescue is low and the effect is not ideal.
The YYD-TDS102 system is a downhole personnel tracking management system developed based on the latest RFID (Radio Frequency Identification) technology, real-time data acquisition and transmission methods, and advanced software design concepts. YYD-TDS102 establishes a complete, flexible and real-time tracking management system to dynamically track and control the location and distribution of underground operators, access rights management of tunnels, production plan arrangements, and safe flow of production materials to achieve underground The informatization and visualization of management improve the level of coal mining production management and operational safety. YYD-TDS101 can achieve:
Tracking function of downhole production personnel and equipment;
Attendance and daily management functions of production personnel;
Safety monitoring function in production.
YYD-TDS102 Underground Personnel Tracking Management System
YYD-TDS102 is a comprehensive application system integrating downhole personnel attendance, tracking and positioning, post-disaster first aid, daily management, etc. It integrates the latest products and technologies such as radio frequency identification, wireless transmission, and software programming.
The high-precision card readers of the YYD-TDS102 system are distributed in major places, working surfaces and roadways in the underground. When the production staff or equipment wearing the electronic identification card passes through the identification area of the card reader, the card reader will receive the electronic Identify the ID number of the card and transmit the ID code to the Inoue Monitoring Center. Each ID code is unique. Through this ID code, the movement trajectory of each employee or equipment entering and exiting the well can be identified, so as to realize the tracking and management of the target. The YYD-TDS102 system implements a passive monitoring mode, the measured target has no burden, and the recognition distance is long. Underground workers do not need to carry additional equipment, and do not need to take the initiative to carry out any operations.
Based on the above technical design, the YYD-TDS102 underground personnel tracking management system can realize:
Tracking of moving targets: The system combined with underground electronic mine maps can display the number and distribution of personnel in the entire mine, various panels and coal seams in real time; display the moving route of the designated personnel; locate and track the designated personnel; query the specific personnel in the underground s position. The positioning information can be displayed in real time, and the positioning information at a certain historical moment can also be queried.
Production attendance and personnel management: It can accurately count the time of mine workers and risers, and can generate reports such as daily attendance and monthly attendance statistics according to shifts and departments. At the end of each shift, the staff on duty are counted, and if any personnel are found to be missing, the alarm will be reported for the on-duty personnel to check; if the personnel are found to be working underground for more than the specified time, the system will automatically alarm and give a list of relevant personnel and other information, and pass at the same time Radio frequency tag alarms to notify relevant personnel. When an emergency occurs in a mine, the location of personnel can be quickly determined, and search and rescue work can be carried out in time.
Safety monitoring management: Set up monitoring sub-stations in some important places underground, dangerous places (such as blind alleys, water silos) and other areas where entry is prohibited. When unauthorized persons enter, the system will give prompts and warnings to prevent dangerous situations from occurring. At the same time, the relevant information is recorded and saved.
The specific design principles and functions of the YYD-TDS102 system are as follows:
YYD-TDS102 System Solution Technical Principle
The YYD-TDS102 system adopts RFID identification technology. The identification carrier is composed of an electronic identification card, a card reader and an antenna. Among them:
1) Electronic identification card: the data carrier of the identification system, which contains the identification code (ID) information of the label;
2) Card reader: After receiving the microwave composite signal reflected by the electronic identification card, it reads the ID information in the electronic identification card, and then sends the information to the ground monitoring center;
3) Antenna: transmit radio frequency signal between electronic identification card and card reader, control data acquisition and communication.
YYD-TDS102 system consists of downhole part and uphole part, as shown in Figure X. The downhole part realizes the reading of the identification code data of employees or equipment, and transmits it to the uphole part in real time via the explosion-proof cable; the uphole part matches the identity information corresponding to each identification code in the database according to the received identification code of each employee and equipment, such as name, team , Type of work, etc., and displayed on the monitoring screen in real time and stored in the computer database for future use. The system structure of YYD-TDS102 is shown in Figure X:
YYD-TDS102 system solution
The underground part uses explosion-proof cables as the main transmission path (in the form of CAN bus), which is mainly composed of card reader substations, electronic card readers, and explosion-proof power supplies. The card reading substation is fixedly installed at the entrance and exit of each main roadway, and the data information of the card reader under the card reading substation is summarized. Electronic card readers are installed in major or dangerous locations underground, such as intersections, working faces, dangerous places (such as blind lanes, tunnel heads, etc.), and main entrances and exits on the ground, and other places that need to be monitored. Data inspection and signal collection are continuously carried out. . The entire downhole system is installed in a distributed manner to ensure the stability and reliability of the system. Electronic identification cards are divided into employee identification cards and equipment identification cards. The employee identification card is worn by the employee (such as installing the employee’s helmet, belt or miner’s lamp, etc.) without additional carrying equipment. The device identification card is installed on the bulk equipment that needs to be monitored for going up and down or moving targets, such as vehicles.
The Inoue part uses Ethernet as the main transmission channel, including database servers, monitoring computers, printers and other equipment located in the monitoring center. The database server stores the personnel name or equipment name, grouping, shift number, attendance record and other data information corresponding to the electronic identification card. Through the electronic identification card information collected in real time, matching the personal and equipment information recorded in the database server, the tracking and positioning of underground personnel and equipment can be completed in real time. Using the local area network, the Work Safety Supervision Bureau, the Mining Bureau and related clients (relevant departments) can also understand the conditions of underground personnel and equipment in real time.
Basic principle: When an employee or device carrying electronics passes through the identification area of the card reader, the card reader will be activated and the identification information of the card reader will be sent to the card reader. After the card reader receives the personal information , After processing, sent to the upper card reading substation. The card reader station transmits data information to the well through the explosion-proof cable in real time. The monitoring dynamic receives the information of each underground electronic card reader, and extracts the information stored in the database. Managers can see the status of monitoring targets in real time, perform lock-in monitoring of different areas or pending targets, and dynamically manage and dispatch controlled personnel and equipment. Ensure that corresponding emergency measures can be taken in an emergency. The coal mine safety information monitoring system is a collection, input, storage, retrieval, query and analysis of spatial data in one. Through the account authorization form, different clients can be authorized, so that each relevant department can understand the activity trajectory of a specific group member.
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