Coal mine safety has become a difficult problem restricting the development of coal enterprises, people pay more and more attention to coal mine safety. Every major production safety accident has aroused great concern of the government and all sectors of society. It is imminent to comprehensively use information technology to strengthen the production safety management of coal mines and improve the efficiency of emergency command. Among them, the management platform based on video communication becomes the core carrier to solve the emergency problem of production safety.

In our country, the Eleventh Five Year Plan of national safety production informatization and the coal mine safety production emergency meeting put forward the requirements of building safety production emergency command and dispatch system. However, few manufacturers can provide coal industry emergency command and scheduling solutions. Although many coal enterprises have realized the construction and application of coal mine safety monitoring system to a certain extent, they have also realized information application in safety management and safety production. But in the face of increasing emergency demand, especially in the face of increasingly complex production safety command and scheduling applications, these can not meet the status of coal mine safety production. The command and dispatch of coal mine safety production has become a major task to be solved urgently. This integrated system should have stronger pertinence and applicability in emergency command and dispatch.

At present, most coal mines have built gas monitoring, ventilation detection, personnel positioning, program-controlled telephone, video monitoring, mobile command and other systems, which have realized the basic application of coal mine safety production, but the systems are independent of each other, and can not comprehensively apply various information and conduct unified emergency command and dispatch. Therefore, an efficient coal mine safety production emergency command and dispatch system should be able to integrate all kinds of systems, improve the utilization rate of effective information, and achieve real-time unified emergency command and dispatch in the three stages of beforehand, in-process and afterwards, so as to achieve the purpose of safety prevention in advance, timely investigation in the event and proper handling afterwards. Therefore, a powerful and well applied visual emergency management platform should have the following functions.

1. Daily management: focusing on comprehensive supervision of safety production

Prior safety supervision and management involves the following aspects. First, the leading office, work safety command center, dispatching room and other departments can monitor the situation of the production site in real time, so as to grasp the first-hand situation of the production site at any time, find out the signs of accidents in time, and eliminate the hidden danger as soon as possible; Second, through the close combination with personnel positioning system, the safety command center and dispatching room can not only see the image of underground workers, but also display their precise position on the coordinates of the positioning system, and obtain two-way voice communication with underground workers; Third, a variety of video recording methods can be used to record important places and processes such as production site, dispatching room, command and dispatching and remote training process, and centralized storage can be used to support web distributed playback function, so as to investigate the responsibility afterwards and provide strong evidence for experience summary.

2. Monitoring and dispatching: an integrated linkage mechanism of remote detection and early warning

In general, remote detection is an independent system, but in the application process, if it is integrated with video communication, it will undoubtedly enhance the efficiency of safety production detection. In practical application, when the environment of the production site changes and reaches the warning condition, all kinds of alarm programs for collecting information are started immediately, such as methane, carbon monoxide, wind speed, temperature, fan door opening and stopping, and so on. According to all kinds of alarm information and on-site images, the commander can determine whether the alarm information is false. If the alarm is true, it is convenient for personnel to evacuate in time, Avoid casualties. At the same time, the alarm information is uploaded to the superior management department, which is convenient for the superior leaders to make decisions and implement the integrated visual command, so as to nip the danger in the bud.

3. Accident emergency: Video emergency command with real-time interaction highlighted from the overall situation

After the accident, the leaders of the government and all levels of the coal mine can start the command and dispatch at the first time, upload the image of the scene of the accident to the command by using the dependent wired network or wireless monitoring, so that the leaders can make quick decisions. The relevant departments can start the emergency procedures, assist the evacuation of the site personnel, and start the emergency plan for rescue, so as to prevent and reduce casualties, Reduce property losses. In addition, coal mine leaders and relevant government departments can check the cause of the accident according to the video files before and during the accident, sum up the experience, and conduct safety training for on-the-job employees of coal mining enterprises through video and radio conferences, so as to enhance the vigilance.

4. Direct to underground site: remote operation guidance

If the dispatching room and the leadership office find that the underground personnel have illegal behaviors, they can directly communicate with them by voice, give them remote guidance and correct them. If the on-site personnel are not clear about the current situation, they can directly ask the relevant departments to avoid the accidents caused by personnel misoperation.

At present, according to the application requirements of coal mine emergency command and scheduling, many enterprises have proposed command and scheduling solutions, but most of the solutions are integrated through the way of “video monitoring + video conference”. Although these solutions can also achieve emergency command, the effect is far from the application requirements. This paper introduces the vc3 video command and dispatch system developed by Beijing huaweixun Telecommunication Technology Co., Ltd. It forms an integrated video emergency command and dispatch system by the way of video monitoring, video conference and command and dispatch, which is welcomed by the majority of coal mining enterprises. Figure 1 is the network structure diagram of vc3 system, and its functional features are introduced as follows:

Function and application analysis of coal mine safety production emergency command and dispatching management platform

1. Enhanced dispatching command function

With the help of the unique multiple levels and authority mode settings of the integrated video command and dispatch system, group leaders or managers can issue command and dispatch orders to their subordinates through the command and dispatch terminal, and the two-way communication of audio and video information can be carried out between the superior and subordinate departments, leaders at all levels and subordinates in real time.

2. All day long distance video interactive communication

According to the application needs of users, traditional video conference is held for two-way audio and video communication. The chairman can set up several regular meetings, and each regular meeting contains relatively fixed members. The chairman can easily organize the meeting. Members of the meeting can join and leave the meeting group at any time. The chairman can control the voice of each venue and broadcast a certain sub venue. The system supports various meeting forms: instant meeting, regular meeting, multi group meeting, etc.

3. Integrated video surveillance

Users can flexibly switch live video images, control PTZ and camera, conveniently display one to nine channel video images, and support two-way voice visual intercom. Support point-to-point monitoring, point to multipoint monitoring, multipoint to one point monitoring, multipoint to multipoint monitoring and other monitoring modes.

4. Integrated security alarm linkage

In the monitoring field, the environment acquisition sensing equipment can be connected, such as infrared, humidity, smoke sensor, etc. when the collected environment data is abnormal, the alarm can be sent out, and the monitoring image of the area will be displayed in the designated monitoring equipment immediately (such as command and dispatch terminal, electronic map). At the same time, the video server starts the video recording task of the monitoring point image, It provides valuable information for future evidence collection, and also provides materials for future education and learning.

5. Multi service integration and interconnection

The system can organically combine the existing gas monitoring, personnel positioning, program-controlled telephone, video monitoring, video conference, television broadcasting and other systems, realize the interconnection between various systems, improve the operation efficiency of various systems, and provide comprehensive and effective information for unified safety production emergency command.

6. Mobile command

Mobile command is an important means of emergency command. After the accident, the mobile command can reach the position designated by the leader, upload the scene image to the command center at the first time, and provide valuable information for the leader’s decision-making.

As a new type of video communication system, coal mine safety production emergency command and dispatching management platform has incomparable advantages with the traditional application mode. Through this system, decision-makers can conduct comprehensive command and overall scheduling for different production links related to the overall safety through face-to-face communication, so as to improve the efficiency of enterprise operation and increase the safety factor of operation. For the coal industry, it is a more potential application of video communication solutions, it is worth promoting in the majority of coal mining enterprises.

Editor in charge: GT

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