RHC zigbee wireless underground positioning system application solution

xarhc

RHC zigbee wireless underground positioning system application solution [Copy link]

• RHC zigbee wireless underground positioning system application solution

As the country pays more and more attention to the safety of coal mines and other mining industries, the supervision is constantly strengthened. Large and medium-sized coal mines and many small coal mines in towns and villages have been equipped with coal mine safety monitoring systems, which effectively curbed the occurrence of major gas explosion accidents. However, there is a lack of monitoring of the location information of underground personnel. At present, there are still widespread difficulties in the management of personnel entering the mine. It is difficult for the personnel on the surface to grasp the distribution and operation of the underground personnel in a timely and accurate manner. Once an accident occurs, the efficiency of emergency rescue and safety rescue is low. In particular, there is a lack of reliable location information for the rescue of mine personnel after the accident, which seriously restricts the efficiency of emergency rescue and loses the most precious rescue opportunity.

The ZigBee wireless underground positioning system utilizes the world's latest wireless radio frequency technology, data processing technology, data communication technology and geographic information system, combined with the latest wireless network transmission technology ZigBee , positioning patent technology and coal mine underground communication base station patent technology, truly realizing the precise positioning of underground personnel and other business needs.

2. Product Overview

ZIGBEE underground positioning system is a new generation of intelligent underground positioning system developed by Xi'an Runhuicheng Electronic Technology Co., Ltd. The system consists of Zigbee coordination controller, Zigbee-GPS base station, mobile positioning terminal and background positioning management system software . The system uses dual-mode positioning, namely GPS and ZIGBEE , with small size, low energy consumption, strong network scalability, and can load various sensors arbitrarily to form a huge intelligent network . One host can correspond to 64,000 devices at the same time. It is safe, reliable and energy-saving. The system is also suitable for parking lots, bus systems, coal mines, subways and other occasions.

3. Product Application

As shown in the figure below: The ZIGBEE underground positioning system consists of three parts : the surface monitoring center, the underground positioning base station, and the personnel positioning terminal equipment. The surface monitoring center is connected to the underground coordinator control center by wired means. The underground control center station communicates with each underground positioning base station through the Zigbee wireless network. The positioning base station communicates with the personnel positioning terminal through the wireless network to establish a data connection, and the underlying wireless data communication platform is constructed.

The on-site management personnel can use the monitoring and positioning software system in the monitoring center to display the real-time distribution of underground personnel, timely and accurately grasp the distribution and operation of underground personnel, and send early warning information to underground personnel according to the monitoring situation. The on-site positioning software system is composed of the following subsystems : personnel positioning subsystem, underground environment monitoring subsystem, ground early warning subsystem, communication subsystem, and database management subsystem. The personnel positioning subsystem collects the signal strength (RSSI) of the communication between the underground personnel positioning terminal and each beacon node by collecting the underground positioning base stations ( beacon nodes ) , and uses the centroid algorithm to calculate the distance between the underground personnel and the beacon node to realize the positioning of the personnel and display their specific location on the screen. The underground environment monitoring subsystem collects the information of the gas, temperature, and humidity sensors of the underground positioning base stations to realize the monitoring of the underground working conditions. The ground warning subsystem determines whether to issue a warning based on the collected underground working condition information. While the monitoring center displays the location of the danger, the warning information is promptly transmitted to the underground personnel positioning terminal equipment through the underground positioning base station according to the danger location for early warning prompts, so that relevant personnel can evacuate in time and take corresponding disaster reduction measures. The communication subsystem realizes data communication between the monitoring center and the underground central station, and can realize data communication with each underground positioning base station and underground personnel positioning terminal through the underground central station. The database management subsystem realizes the management of underground personnel information, underground environmental monitoring data, and warning information, and provides statistics, query, and backup functions for system comprehensive data .

xarhc

System functions: Realize accurate positioning of underground tunnel working surface staff, timely and accurately provide the number, location, distribution of underground personnel and the location of each person at any time and the activity trajectory of each time period, provide reliable data basis for accident handling and rescue work, and ensure the efficient operation of disaster relief and safety rescue work. Provide intuitive tunnel map, which can conveniently observe the distribution of underground personnel and the working status of system equipment at any time. At the same time, improve the efficiency of assisting rescue work with simple and fast data processing and query methods. Real-time monitoring and screen display of mine mobile targets: The system program displays the schematic diagram of the tunnel and communication substation through the monitoring machine screen, and displays the relevant information of the mobile targets around the communication substation. Display the distribution of each communication substation in the tunnel and the status of each communication substation; display the personnel number and current location of each person in the large tunnel; display the personnel distribution table of each working surface; realize the attendance function of the staff of each department, and can issue various comprehensive and detailed attendance reports for each department and individual, providing a basis for the management to evaluate the work of the production department and individuals. The underground fixed-point attendance function can help supervise whether the staff of special departments work at the specified time and place, so as to achieve the purpose of strengthening the management of underground operations. Information storage and historical data playback: The system has data storage and playback functions. The system can store the personnel distribution of 1 week. The dispatcher can replay the personnel distribution of any period within this time period at any time to provide a basis for accident analysis. Emergency alarm function: When underground personnel encounter emergencies (such as fire, gas explosion, roof collapse, water seepage, etc.), they can use the alarm button on the mine intrinsically safe positioning card to alarm. Alarm information function: Once the personnel on the surface know that there is a dangerous situation, they can immediately notify all personnel underground as long as they have a positioning device, providing precious time for escape. Abnormal data automatic alarm function, such as restricted area and excessive downhole time alarm. Human-computer dialogue: Use human-computer dialogue to call various menus, and select functions according to the menu and input prompts. Self-diagnosis: Detect whether the communication substation on the network is working normally. Printing: Historical records can be printed according to requirements. System features: (1). Geographic information display and query system based on GIS technology (2). Large underground coverage (3) High positioning accuracy and low bit error rate (4) High reliability of the host mutual backup (5) Comprehensive wireless layout, safe and reliable (6) Wide voltage range 60V-12V can be connected (7) Ultra-long standby Even if the main power is disconnected, the internal power supply can be used to maintain for more than 7 days (8) Simple interface, easy to install. (Only antenna port, power port, aviation connector expansion port) (9) High scalability, can load various sensors at will, theoretically can load more than 60,000 IV. Conclusion ZIGBEE underground positioning system can timely and accurately reflect the personnel situation in various areas of the underground to the upper computer system on the ground. In the event of a sudden disaster in a coal mine, rescue personnel can take timely and effective rescue measures based on the information reflected by the system to the upper computer. Improve the safety factor of the coal industry.

fengzhang2002

It turns out that this plan is not yet mature