CN202832657U - Coal miner positioning and management system based on ZigBee technology - Google Patents

Abstract

The utility model discloses a coal mine personnel positioning and management system based on ZigBee technology. When a person carrying an identification card passes through the working range of a wireless positioning base station, the identification card actively sends personnel code information to the wireless positioning base station, and the wireless positioning base station After receiving the information sent by the identification card, the information is transmitted to the network controller through the LonWorks control bus, and the network controller then sends the data to the ground control center network through Ethernet. The ground control center network collects and processes the information and displays it to the management personnel in real time. The scheme of the utility model improves the real-time supervision ability of the coal mine management personnel and the upper supervisory department on the operation of the coal mine, and provides strong information guarantee and support for the rescue personnel after the accident occurs.

Description

Coal mine personnel positioning and management system based on ZigBee technology

technical field

The purpose of the present invention is to propose a coal mine personnel positioning and management system based on ZigBee technology, improve the real-time supervision ability of coal mine management personnel and upper supervisory departments on the operation of coal mines, and provide strong information protection for rescuers after accidents occur and support. the

Background technique

In recent years, the country's demand for coal has been increasing rapidly, and the coal industry has also been greatly developed. However, major accidents in coal mines occur from time to time, and effective control of disaster accidents has not yet been realized. Due to the particularity of the coal mine industry, it is generally difficult to manage the underground personnel at present. It is difficult for the above-ground personnel to grasp the dynamic distribution and operating conditions of the underground personnel in a timely manner. Once an accident occurs, the above-ground personnel lack reliable underground information, and the efficiency of emergency rescue and safety rescue is low. The effect is not ideal, for this reason, a set of advanced and reliable personnel positioning system is very important. When an accident occurs, it can accurately determine the trapped location of the underground production operators, the evacuation route of the distressed personnel, the underground environmental monitoring situation, etc., and provide powerful information guarantee for the rescuers to formulate rescue plans. the

At present, there are some personnel positioning systems on the market, the main shortcomings are as follows:

(1) For the tracking of underground personnel, the marking card basically uses RFID. This method is to use radio frequency card (RFID) reading at the mine wellhead, or some other key underground passages, to record and track the personnel who go down the mine. This kind of identification card has the following problems: the effective working time is short; the missed detection rate of positioning personnel is high under high-speed conditions; ), there will be a phenomenon of missing reading; the communication method requires a high signal-to-noise ratio, and the anti-interference ability is poor, while the underground environmental conditions are very complex, and interference factors are everywhere, especially the most critical mining face; the reading and writing distance is limited , There are certain requirements for the matching of the direction position of the marking card and the direction of the reader antenna, and the flexibility of the system is greatly limited. the

(2) One-way information transmission, the information transmission rate is low. The direction of information transmission in the early personnel positioning system was from the identification card to the main station. As a system to ensure the safety of miners, there is no way to send information underground, which greatly reduces the role that such systems can play. The low data transmission data of the personnel positioning system affects the real-time performance of the system. the

(3) The transmission rate of the underground control network or bus is low, the transmission distance is short, the communication is unreliable, the bit error rate is high, and the damage of one node often leads to the paralysis of the whole system. the

Contents of the invention

The purpose of the present invention is to propose a coal mine personnel positioning and management system, improve the real-time supervision ability of coal mine management personnel and upper supervisory departments on the operation of coal mines, and provide strong information guarantee and support for rescuers after an accident occurs. the

The technical solution to achieve the purpose is as follows: a coal mine personnel positioning and management system based on ZigBee technology, using ZigBee positioning technology to track and manage coal mine staff, including underground personnel positioning network, ground control center network, and internal enterprise The interface between the local area network, the interface with the network of the coal mine safety supervision department, the data acquisition and processing module, the query management module, the wireless identification card and the wireless positioning base station; the connection between the ground control center network and the underground personnel positioning network is connected by optical fiber Ethernet ; The ground control center network uses a firewall to separate the network, provides Ethernet services internally, and externally provides interfaces with the internal LAN of the enterprise and the interface with the network of the coal mine safety supervision department; the network controller and the wireless positioning base station use The LonWorks control bus is connected to form an underground personnel positioning network; the information exchange between the Ethernet and the LonWorks control bus is realized by the i.LON server in the network controller; Actively send personnel code information to the wireless positioning base station. After receiving the information sent by the identification card, the wireless positioning base station transmits the information to the network controller through the LonWorks control bus, and the network controller sends the data to the ground control center network through Ethernet. The ground control center network collects and processes information and displays it to managers in real time. the

Compared with the prior art, the present invention has significant advantages: (1) The effective working time of the wireless identification card is long, and it can handle the situation that many people pass through the card reading system at the same time; (2) Two-way information transmission, the information transmission rate is higher . Improve the real-time performance of the system. (3) The transmission rate of the underground control network and the bus is improved. the

Description of drawings

Figure 1 is a system network structure diagram. the

Figure 2 is a block diagram of the network controller. the

Fig. 3 is a schematic block diagram of base station composition. the

Figure 4 is a block diagram of the composition of the identification card. the

Detailed ways

The system of the invention is mainly used for positioning and tracking underground personnel and locomotives. In use, the wireless positioning base station is installed in the passage where personnel may pass through, such as the main underground passageway and the entrance of each mining area, and is connected to the computer of the ground control center through network wiring. When a person or locomotive carrying a positioning identification card passes the base station installed in the underground roadway, the base station obtains the tag information carried by the person or locomotive, and automatically collects the time and location information of the person passing by, and transmits it to the management database on the ground. The ground central station processes the coded signals from the underground positioning base station, realizes the functions of collecting, analyzing and processing, real-time display, historical data storage report, query and printing of the tracking and positioning information of underground personnel and locomotives, and displays them on the monitor of the control center at the same time On the one hand, it enables management personnel to inquire and observe various information in a timely and accurate manner, and is convenient for management personnel to manage underground personnel and dispatch equipment. At the same time, once an accident occurs underground, the distribution of personnel at the accident site can be obtained immediately according to the personnel distribution information in the computer, so as to help rescuers carry out rescue quickly and accurately. the

The present invention utilizes ZigBee positioning technology to track and manage coal mine workers, and includes three functional modules: a system network module 1, a ground monitoring module 2, and an underground positioning equipment module 3. The system network module 1 includes an underground personnel positioning network 11, a ground control center network 12, an interface 13 with the enterprise internal LAN, and an interface 14 with the coal mine safety supervision department network; the ground monitoring module 2 includes a data collection and processing module 21, Inquiry management module 22; downhole positioning equipment module 3 includes wireless identification card 31, wireless positioning base station 32; adopts 100M optical fiber Ethernet connection between ground monitoring module 2 and downhole personnel positioning network 11; uses network controller in underground personnel positioning network 11 The LonWorks control bus is used to connect with the wireless positioning base station 32; the information exchange task of the Ethernet and the LonWorks control bus is realized by the i.LON server in the network controller in the underground personnel positioning network 11; When wirelessly locating the working range of the base station, the identification card actively sends personnel code information to the base station. After receiving the information sent by the identification card, the base station transmits the information to the network controller through the LonWorks control bus, and the network controller then sends the data through Ethernet. To the ground monitoring module 2, the ground monitoring module 2 collects and processes information and displays it to the management personnel in real time, and the management personnel understand and manage the operation status and situation of the coal mine through the ground monitoring module 2. the

The system network module 1 includes four sub-modules including the underground personnel positioning network 11, the ground control center network 12, the interface 13 with the enterprise internal LAN, and the interface 14 with the network of the coal mine safety supervision department. The characteristics are as follows:

1) Underground personnel positioning network 11: composed of several network controllers connected in the form of a ring network, each network controller is connected to several wireless positioning base stations 32, the underground network controller and network controller are connected by 100M optical fiber Ethernet, The wireless positioning base stations 32 are connected by the LonWorks control bus; the network controller is used for two-way communication with the underground wireless positioning base station and the communication with the ground control center network; the network controller and the underground wireless positioning base station [32], the network controller and the The ground control center network [12] carries out two-way communication respectively;

2) Ground control center network 12: composed of monitoring hosts, backup hosts, servers (including firewalls, Web servers, database servers), surge protectors, display screens, etc., each monitoring host is connected to the Web server, The monitoring host is connected to the display screen; at the same time, it provides the access interface of the internal LAN of the enterprise and the access interface of the network of the coal mine safety supervision department;

3) Interface 13 with the internal LAN of the enterprise: the access service interface is composed of a firewall and a network server to provide access services to the internal LAN of the enterprise, and the internal LAN of the enterprise collects relevant required information through this service interface for the safety production function of the enterprise Departments and supervisors understand and control the production situation of each mine;

4) Interface 14 with the coal mine safety supervision department network: through the firewall and network server to form an access service interface, provide access services to the coal mine safety supervision department, realize the networking between the monitoring center and the coal mine safety supervision department, and enable the supervision department Obtain coal mine information directly from the ground monitoring center by accessing the service interface, and understand and grasp the safety production situation of coal mines. the

The surface monitoring module 2 includes a data collection and processing module 21 and a query management module 22; the data collection and processing module 21 is composed of a server, is connected to the downhole personnel positioning network 11 through Ethernet, is equipped with data collection and processing software, collects personnel positioning data in real time and Processing, storage; data query management module 22 is made of Web server, is connected with data server, multiple monitoring hosts by Ethernet, runs relevant software system, handles the inquiry request and the management instruction that monitoring host sends in real time, according to corresponding inquiry to The data server makes a query request, and at the same time, sends instructions to the underground according to the instructions issued by the administrator of the monitoring host. the

Downhole positioning equipment module 3 adopts ZigBee wireless technology, including wireless identification card 31 and wireless positioning base station 32; described wireless identification card [31] and wireless positioning base station [32] have adopted ZigBee wireless technology; wireless positioning base station 32 and wireless positioning base station The 2.4G ISM frequency band wireless communication is adopted between the identification cards 31, and the communication rate is 250kbps; the wireless identification card 31 is usually in a dormant state, and when the wireless identification card [31] is within the identification range of a certain wireless positioning base station and is activated, it will actively Send personnel code information to wireless positioning base station [32], transfer to dormant state after sending, wait for the next activation of wireless positioning base station [32]; wireless positioning base station 32 is composed of regulated power supply, wireless transceiver, microprocessor, memory, Composed of antennas, the carrier signal is continuously sent through the antenna. When the wireless identification card passes near the base station, the identification card chip is awakened, and the chip that was originally in the "sleeping state" is activated and modulates its own coded information onto the carrier. It is transmitted through the antenna inside the card, and the base station receives the information sent by the identification card through the wireless transceiver. the

The present invention will be described in further detail below in conjunction with the accompanying drawings. the

The system network structure shown in Figure 1 is divided into two parts: ground monitoring network and underground control network. The ground monitoring center is mainly composed of monitoring host and monitoring software, backup host, UPS, printer, large screen, server (including firewall, database server), surge protector, etc. The C/S structure is adopted inside the local area network of the ground monitoring center. The monitoring host is the data acquisition host, and its main function is to use Ethernet to communicate with underground equipment to collect personnel location information. The main function of the database server is to store the data collected by the monitoring host. The web server mainly receives the request from the network client, and conducts socket communication with the monitoring host of the ground center station to obtain real-time and historical data, and uses the network to display the data and curves on the client. The web client requests the determined server URL, selects the real-time or historical data and curves that you want to view, and transmits data with the web server through the UDP protocol. After the server accepts the request, it establishes communication with the acquisition host, obtains the data and transmits it for display. The underground control network is mainly composed of a ring network, and several network controllers are connected to the ring network. Each network controller can connect 32 positioning base stations. The main function of the network controller is two-way communication with the underground positioning base station and communication with the ground monitoring network. The main function of the positioning base station is to track and identify underground personnel through the wireless network, and at the same time transmit the identified personnel information to the ground monitoring center in a certain data format. the

The network controller shown in Figure 2 is mainly composed of an Ethernet switch, 1 i.LON100 server, 1 fiber optic terminal box, 1 power transformer, DC regulated power supply, isolation coupler, and 24V battery. The network controller shoulders the heavy responsibility of system communication. The parameters and commands of the ground central station are converted into electrical signals through the Ethernet switch. Then transmit the parameters and commands to the base station through the carrier communication interface of the i.LON server. The data collected by the base station is transmitted to the Ethernet switch through the adaptive 10/100Base Ethernet interface of the i.LON server, and the electrical signal is converted into an optical signal and transmitted to the ground central station. the

The base station shown in Figure 3 is mainly composed of regulated power supply module, wireless transceiver, microprocessor, memory, receiving antenna, display module, infrared receiver, Lonworks interface module, sound and light alarm interface and other auxiliary modules. The base station is a key component for collecting signals, and it continuously sends out carrier signals (finding signals) through the transmitting antenna. When an employee with an identification card passes near the substation, the identification card chip is awakened, and the chip that was originally in a "sleeping state" is activated and modulates its own coded information onto the carrier wave and transmits it through the antenna in the card. The transmission is successful Immediately enters sleep mode. Among them, the ZigBee wireless transceiver chip is the first portal channel for collecting radio frequency identification cards, and it is also the most important functional component. The interior integrates a wireless receiving circuit and a power output circuit that generates baseband signals. It will receive the identification code baseband information sent by the identification card, demodulate it internally, and then output the serial signal (SPI) from the output circuit to the microprocessor after band-pass filtering and shaping. After the microprocessor receives the signal output by the wireless transceiver, it collects and processes the signal. the

The indicator card shown in Figure 4 is mainly composed of power supply battery, voltage stabilization module, antenna, wireless transceiver and other modules. The wireless identification card is in a dormant state when it is in standby, and consumes little power. When it is "woke up" by a nearby personnel positioning base station, it will transmit a signal, and it will go to a dormant state immediately after the transmission. When an employee or locomotive with an identification card passes the monitoring base station, it will be recognized by the system immediately, and through the information exchange of the system network, information such as the road section (base station number), passing time, identification card number and other information passed by the person will be transmitted to the ground monitoring Center. the

Claims (3)

1. A coal mine personnel positioning and management system based on ZigBee technology, which is characterized in that it uses ZigBee positioning technology to track and manage coal mine staff, including underground personnel positioning network [11], ground control center network [12], and The interface between the internal LAN of the enterprise [13], the interface between the network of the coal mine safety supervision department [14], the data collection and processing module [21], the query management module [22], the wireless identification card [31] and the wireless positioning base station [32]; the ground control center network [12] and the underground personnel positioning network [11] are connected by fiber-optic Ethernet; the ground control center network [12] uses a firewall to separate the network, providing Ethernet services internally and externally The interface between the enterprise's internal LAN [13] and the interface with the network of the coal mine safety supervision department [14]; the network controller and the wireless positioning base station [32] are connected by the LonWorks control bus to form an underground personnel positioning network [11] ]; the information exchange between Ethernet and LonWorks control bus is realized by the i.LON server in the network controller; when the personnel carrying the identification card [31] locates the working range of the base station [32] wirelessly, the identification card [31] Actively send personnel code information to the wireless positioning base station [32]. After receiving the information sent by the identification card [31], the wireless positioning base station [32] transmits the information to the network controller through the LonWorks control bus, and the network controller then transmits the information through the Ethernet Send the data to the ground control center network [12], and the ground control center network [12] collects and processes the information and displays it to the managers in real time. 2. according to the coal mine personnel location and management system based on ZigBee technology described in right 1, it is characterized in that: The underground personnel positioning network [11]: consists of several network controllers connected in the form of a ring network. Each network controller is connected to several wireless positioning base stations [32]. , the wireless positioning base stations [32] are connected by the LonWorks control bus; the network controller communicates with the underground wireless positioning base station [32], and the network controller and the ground control center network [12] respectively; Ground control center network [12]: It also includes monitoring hosts, firewalls, Web servers, database servers, and display screens. Each monitoring host is connected to the Web server, monitoring host, and display screens in the form of Ethernet; the ground control center network [12 ] Externally provide the access interface of the internal LAN of the enterprise and the access interface of the network of the coal mine safety supervision department. 3. The coal mine personnel positioning and management system based on ZigBee technology according to right 1 is characterized in that: the wireless identification card [31] and the wireless positioning base station [32] have adopted ZigBee wireless technology; the wireless positioning base station [32] 2.4G ISM frequency band wireless communication is adopted between the wireless identification card [31], and the communication rate is 250kbps; And when it is activated, it actively sends personnel code information to the wireless positioning base station [32], and turns to a dormant state after sending, waiting for the next activation of the wireless positioning base station [32]; the wireless positioning base station [32] is powered by a regulated power supply, wireless transceiver Composed of a processor, a microprocessor, a memory, and an antenna, the carrier signal is continuously sent out through the antenna. When the wireless identification card passes near the base station, the identification card chip is awakened, and the chip that was originally in the "sleeping state" is activated and will contain The coded information of itself is modulated onto the carrier wave and transmitted through the antenna inside the card, and the base station receives the information sent by the identification card through the wireless transceiver.

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