High-precision personnel positioning application cases of the six major systems of the mine
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System Overview
The KJ280 underground high-precision personnel positioning system is an information technology product integrating computer software and hardware, information acquisition and processing, wireless data transmission, network data communication, automatic control and other technologies. Mobile personnel carry out non-contact information collection, thereby realizing the automatic collection management of the target, so that the underground can realize the high-precision positioning and management of the personnel.
The system integrates high-techZigBeeTechnology, using the wireless chip with the fastest transmission rate at present, to achieve reliable wireless data communication, the card reading sub-station and personnel card and other equipment adopts intrinsically safe design, easy to install, long range, with high-precision identification without blind spots, The signal has high security and confidentiality, no electromagnetic pollution to the human body, and strong environmental adaptability.
system structure
System functions
The system has powerful and practical emergency rescue functions for underground personnel:
When the underground personnel are in distress, the “Help” button can be triggered, and the ground will call the police in time, and the query will show who is calling for help, at what time and where;
When there is a danger in a certain area underground, and personnel need to be evacuated, the ground dispatcher or system management personnel can send an emergency evacuation notice to the personnel in the dangerous area underground, and the underground personnel can receive the “evacuation” signal in time through the sound and the indicator light;
When a person is required on the ground and notified to return a call, a “call” signal can be sent on the ground, and the underground personnel can receive the “call” signal in time through sound and indicator lights, and the underground personnel can call back to the surface.
The underground personnel can be tracked and monitored in real time, and the position can be automatically displayed.
It can accurately count the number of people under the mine and in a certain area (such as: working face).
Real-time tracking, query, and printing of the number, activity trajectory and distribution of underground personnel at present and a certain period of time.
The card reading substation and the personnel location identification card have completely independent transmitting and receiving components, and their core technologies are composed of embedded microprocessors and embedded software.
Personnel location identification card adopts advanced embedded microprocessor, and realizes functions such as encoding, decoding, communication and information collision processing under the control of embedded software.
The system has card checking and attendance functions. When workers pass the wellhead, the card can be checked for quality through the card checking screen, and it has a very powerful attendance management function.
The personnel location identification card adopts active working mode (independent power supply), ultra-low energy consumption design, one-time replacement of the battery, maintenance-free use for more than 1 year, and has the function of under-voltage indication.
The cardholder can recognize and receive commands through different light indicators. (Two-way function)
The system has the function of automatically merging time and attendance due to communication interruption, preventing the loss of personnel positioning data due to line failure caused by communication interruption of personnel substations.
The system software has a personnel identification card battery management function.
The system can reliably identify static or high-speed moving targets ≥15m/s.
A single target recognizer can recognize more than 300 personal identification cards at the same time.
Automatic identification function: The staff who enter and exit by car do not need to get off the car. After the vehicle enters the monitoring area, it can automatically complete the personnel positioning and attendance functions.
There is no directionality, no blind spots in the recognition area, and no harm to the human body.
When the underground personnel positioning substation loses contact with the ground central station, the substation can still work independently and automatically store the personnel monitoring data. When the communication is restored, the monitoring host can extract the data and automatically complete the data restoration. The stored data data is greater than 2000.
When the system is collecting real-time data, it can record, display, query, edit, manual input, network communication, etc.
Access control function: Restrict employees from entering special areas in the coal mine as needed. If an unauthorized person approaches the area, an audible and visual alarm signal can be issued, and the ground monitoring host will also issue an alarm signal.
Alarm function: It can restrict the time and place of entry and exit of the personnel. If the authorized time exceeds the authorized time or enters an unauthorized location, the alarm device will be triggered to issue a warning, so that the controller can quickly respond and take safety measures.
The system can automatically generate a database of personnel information, realize the statistics and management of attendance operations, and improve management efficiency.
Once a safety accident occurs in the mine, the monitoring center can know the basic situation of the trapped people in the first time, which is convenient for the development of accident rescue work.
The system has the function of reproducing the trajectory of personnel activities.
The substation has the functions of personnel code and independent clock display, and can be used to check records with a detector.
System Features
The fastest wireless speed and strong anti-interference ability: The latest radio frequency chip is adopted, and the air transmission is 1 megabits per second (1Mbps), which is the fastest among the current personnel positioning chips, which greatly reduces air collision and interference, and is more beneficial In applications where there are many personnel, the technology is in a leading position in China.
High-precision recognition area: The dual-receiving technology application of the personnel recognition card signal using the card reader substation and wireless receiver realizes the positioning of high-precision personnel underground; different areas can be set to specific accuracy according to different requirements .
Each substation can independently determine the direction of personnel entry and exit: special technology is adopted to enable underground personnel to identify the direction of entry and exit through one substation, instead of the traditional two substations to identify the entry and exit of personnel. (This technology has been patented)
The substation has the function of wireless relay: the substation in the mine has the function of wireless transmission between the substation and the substation. The bus can be wired and wireless. Especially suitable for three forks, corners, signal conversion is very convenient. Created a new mode of downhole bus distribution.
Graphical software with rich functions: the combination of geographic information system GIS and SQL Server database is used, with both pictures and texts. It is unique in substation settings, substation movement and line layout. The substations can be dragged arbitrarily, and the substations (increase or decrease) can be displayed conveniently according to the production progress of the mine.
It has a two-way call function: the underground can call the underground personnel, and the underground personnel can call the underground personnel for help when in danger, which is of great significance for rescue and disaster relief.
Certification according to the latest safety standards: The system adopts the safety standard certification of the latest personnel positioning standards, and the functions are compiled according to the new requirements and compatible with the functions of the personnel attendance system.
Self-detection of equipment failure: There is an automatic alarm function for equipment failure, which is very convenient for maintenance.
The system has the function of off-duty alarm: key personnel in the mine (lead foreman, team leader, tile inspector, security inspector, resident supervisor, etc.) Alarm for overcrowded staff in area and working surface. The safety of mine production can be ensured in real time through off-duty alarms for various positions and regional conditions.
The system has a gas mobile terminal-RFID detector: it can dynamically detect the gas concentration of various points in the underground in real time, and transmit it to the substation through wireless transmission, and then transmit it to the upper computer to display the gas concentration value in the upper computer, which complements the fixed type. Gas monitoring system.
success case:
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