CN103742195A - Underground coal mine power monitoring system based on ZigBee wireless technology - Google Patents
Underground coal mine power monitoring system based on ZigBee wireless technology Download PDFInfo
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- CN103742195A CN103742195A CN201310719337.3A CN201310719337A CN103742195A CN 103742195 A CN103742195 A CN 103742195A CN 201310719337 A CN201310719337 A CN 201310719337A CN 103742195 A CN103742195 A CN 103742195A
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Abstract
The invention discloses an underground coal mine power monitoring system based on a ZigBee wireless technology. The underground coal mine power monitoring system comprises a ground ZigBee wireless network management system, a monitoring substation and an intelligent power device. The ground ZigBee wireless network management system comprises a ZigBee wireless network communication interface and a monitoring host, the monitoring host is directly connected with the ZigBee wireless network communication interface and a CAN communication interface, the monitoring host of the ground ZigBee wireless network management system is in communication with the monitoring substation in a CAN field bus communication mode and in a ZigBee wireless network communication mode, and the monitoring substation is in communication with the intelligent power device through an RS-485 communication mode. By adopting the ZigBee wireless technology which has the advantages of being high in transmission capability and reliability and low in power consumption, data rate and cost, the coal mine power grid utilization rate is greatly improved, and coal mine safety in production is facilitated.
Description
Technical field
The present invention relates generally to technical field, relates in particular to a kind of Power Monitored Control System For Underground Mine based on ZigBee wireless technology.
Background technology
ZigBee is a kind of wireless connections, can be operated in 2.4GHz (Global prevalence), 868MHz (Europe is popular) and 3 frequency ranges of 915 MHz (U.S. is popular), there is respectively the transfer rate of the highest 250kbit/s, 20kbit/s and 40kbit/s, its transmission range in the scope of 10-75m, but can continue increase.As a kind of wireless communication technology, ZigBee has following features:
(1) low-power consumption: because the transfer rate of ZigBee is low, transmitting power is only 1mW, and has adopted park mode, low in energy consumption, therefore very power saving of ZigBee equipment.It is estimated, ZigBee equipment only depends on No. 5 batteries of two joints just can maintain the service time reaching about 6 months to 2 years, and this is that other wireless device is too far behind to catch up.
(2) cost is low: the initial cost of ZigBee module, 6 dollars of left and right, estimate can drop to 1.5-2.5 dollars soon, and Zigbee protocol is exempted from patent fee.Low cost is also a crucial factor for ZigBee.
(3) time delay is short: communication delay and the time delay activating from resting state are all very short, typical search equipment time delay 30ms, and the time delay that dormancy activates is 15ms, the time delay of vehicular equipment channel access is 15ms.Therefore ZigBee technology is applicable to controlled in wireless to delay requirement harshness (as Industry Control occasion etc.) application.
(4) network capacity is large: the Zigbee network of a hub-and-spoke configuration can hold at most 254 from equipment and a main equipment, can have maximum 100 ZigBee-networks in a region simultaneously, and network composition flexibly.
(5) reliable: to have taked collision avoidance strategy, simultaneously for to need the communication service of fixed-bandwidth to reserve dedicated time slot, avoided sending competition and the conflict of data.MAC layer has adopted the data-transmission mode of full confirmation, and the packet of each transmission must be waited for recipient's confirmation.If gone wrong in transmitting procedure, can retransmit.
(6) safety: ZigBee provides the function of the packet integrity checking based on CRC (CRC), supports authentication and authentication, has adopted the AES of AES-128, and each application can be determined its security attribute flexibly.
Along with improving constantly and the increase of underground power supply used distance of colliery up-to-dateness, under coal mine, power system device reliability of operation, continuity and safety have become one of key of Safety of Coal Mine Production.In early days the computer technology take PC and PLC as representative oneself in coal in China industry, be widely used.At present Coal Mine Power Distribution System computer application is mainly reflected in the aspects such as the Microcomputer Protection, computer management, microcomputer detection of electric substation in coal mine, and has obtained good effect.But, colliery form of substation in underground mining area is mainly the important production link services such as coal mining, ventilation, driving, transportation, draining in contrast to this, due to these workplace complex geologic conditions, there is the gas and coal dust events such as roof fall accident of gathering, drip, can make insulation of electrical installation intensity reduce gradually, easily occur a series of faults such as electric leakage and single-phase earthing.If this class fault is got rid of not in time, can cause the each phase line of electrical network to be moved under on-Line Voltage for a long time, so that insulation breakdown, even there is two-phase or three-phase shortcircuit accident.The arc energy producing while breaking down can cause gas, coal-dust explosion, directly jeopardizes personal safety and mine and produces.So monitoring in real time seems very important to colliery underground power supply system.
In addition, owing to needing the region of monitoring wide under mine, control point disperses, the object of monitoring is of a great variety, need to spend a large amount of human and material resources and financial resources and carry out administering and maintaining of equipment, and attendant's deficiency, maintenance service fall behind oneself and become
Weak link in management.And the occurrence probability of this class event is less, and there is randomness and uncertainty, traditional monitoring
Can not the on-line monitoring on-the-spot all equipment running status of systems approach, carry out fault diagnosis in time, in advance fault got rid of, and
Be just to carry out fault diagnosis after by the time equipment paralysis, will increase the difficulty of maintenance for this reason, likely make this equipment owing to not having and
Time repairing and scrapping, equipment work that can the whole production line of impact out of service, and also most of accident is due to these hidden danger
And occur.
Given this, the present invention has designed electric power safety monitoring system under the coal mine that based on ZigBee wireless network,
This system, is improved speed and the shortening system of system acquisition data and patrols survey week as relay station by outstation
Phase, thus the overall performance of raising system plays a part to form a connecting link in whole system structure.Intelligent electric power device surface to
On-the-spot power equipment carries out real-time data acquisition.
Outstation has designed CAN bus communication interface, ZigBee wireless network communications interface and RS-485 and RS-232
Serial ports, has so just formed the monitoring system of two layers of mesh and Multistage Control.By CAN bus, be connected to the ZigBee transceiver that ground receives ZigBee wireless network monitored data or sends director data, ZigBee wireless network communications interface is connected to Intranet and Internet is upper, communicates by RS-485 and intelligent electric power device simultaneously.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, a kind of method of operation of electric power system and relevant electric parameter, duty of electric fixtures of not only can monitoring is provided, and the Power Monitored Control System For Underground Mine based on ZigBee wireless technology that can carry out dynamic management to all power supply units in full ore deposit, greatly improve the service efficiency of the equipment of the managerial skills of Coal Mine Power Network, be conducive to the safety in production in colliery.
The present invention is achieved by the following technical solutions:
A kind of Power Monitored Control System For Underground Mine based on ZigBee wireless technology, it is characterized in that: include ground ZigBee wireless network management system, outstation, intelligent electric power device, described ground ZigBee wireless network management system includes the ZigBee transceiver that receives ZigBee wireless network monitored data or send director data, ZigBee wireless network communications interface, multiple network computers, multiple network computers connect into wireless data transmission network with the ZigBee transceiver that receives ZigBee wireless network monitored data or transmission director data by ZigBee wireless network protocol and communicate, the ZigBee transceiver that receives ZigBee wireless network monitored data or send director data directly and ZigBee wireless network communications interface, CAN communication interface is connected, described outstation comprises and is arranged at multiple sensors, router, AT91RM9200 core processor of down-hole and terminal node composition, described AT91RM9200 core processor is built-in with memory cell, communication interface, input-output unit, man-machine interface, support circuit, power supply and power-off protector unit, described intelligent electric power device adopts 16 Chip Microcomputer A RM as core, and Chip Microcomputer A RM is connected with power module, input and output photoelectric isolation module, RS-485 communication interface, liquid crystal display and keyboard circuit, warning circuit, between the ZigBee transceiver of the reception ZigBee wireless network monitored data of ground ZigBee wireless network management system or transmission director data and outstation, adopt CAN fieldbus and two kinds of communication modes of ZigBee wireless network to carry out communication, between outstation and intelligent electric power device, adopt the communication modes of RS-485 to carry out communication.
As further illustrating, CC2430 chip and peripheral circuit that above-described router or terminal node have enhancement mode 8051 kernels by least one form.
As further illustrating, the work of above-described outstation is to have router to reach ZigBee transceiver through terminal node detection case by sensor, finally reach face ZigBee wireless network management system, then feed back to AT91RM9200 core processor, carry out accident treatment;
As further illustrating, the above outstation can also be connected on Intranet and Internet by ZigBee wireless network communications interface, carries out remote monitoring.
Advantage of the present invention is:
The present invention has studied electric power safety monitoring system under the coal mine based on ZigBee wireless technology and has monitored down-hole power equipment, adopt ZigBee wireless technology transmittability strong, reliability is high, and have closely, low complex degree, low-power consumption, low data rate, the features such as low cost, the administrative staff of ground monitoring control centre just can directly be monitored underground equipment in real time, can not only monitor intuitively and record working condition and the safety in production situation of down-hole power system equipment, and can find in time accident danger, prevent trouble before it happens, also can provide the relevant firsthand information for ex-post analysis accident.Can realize centralized management and the unmanned of down-hole central substation, working section sub station simultaneously, for the reliability and the economical operation index that improve electric power system, promote scientific, the modernization of Power supply system management, having very important realistic meaning, is the developing direction of Modern Pit safety production monitoring system.
Accompanying drawing explanation
Fig. 1 is structural representation block diagram of the present invention.
Fig. 2 designs partial block diagram for outstation.
Fig. 3 designs partial block diagram for outstation.
Fig. 4 is intelligent electric power device the general frame.
Reference numeral: ground ZigBee wireless network management system 1, outstation 2, intelligent electric power device 3
The specific embodiment
As shown in Figure 1, electric power safety monitoring system under a kind of coal mine based on ZigBee wireless network, include ground ZigBee wireless network management system 1, outstation 2, intelligent electric power device 3, ground ZigBee wireless network management system 1 includes ZigBee wireless network communications interface 4, receive the ZigBee transceiver of ZigBee wireless network monitored data or transmission director data, multiple network computers, multiple network computers communicate by ZigBee wireless network with the ZigBee transceiver that receives ZigBee wireless network monitored data or transmission director data, the ZigBee transceiver 5 that receives ZigBee wireless network monitored data or send director data directly and ZigBee wireless network communications interface 4, CAN communication interface is connected, between the monitoring host computer 5 of ground ZigBee wireless network management system 1 and outstation 2, adopt two kinds of communication modes of CAN fieldbus and ZigBee wireless network to carry out communication, between outstation 2 and intelligent electric power device 3, adopt the communication modes of RS-485 to carry out communication.Each intelligent electric power device 3 is separate, concurrent working, and each electric substation substation of outstation 2 is also separate, is independent of each other.So whole system structure is DCS distributed computer monitoring system, reliable operation is efficient; Substation band reserve battery, while guaranteeing that each power distribution equipment breaks down in down-hole, system can continue reliably working.
Ground ZigBee wireless network management system 1 main task is that the information of whole form of substation in underground mining area is carried out to Storage and Processing, and by advanced friendly man-machine interface, realizes monitoring and the management of all working section sub stations.Only have monitoring host computer 5 to carry out Artificial Control operation to controller switching equipment in underground equipment electric substation, it is directly connected with communication interface, carry out data acquisition and control output, other computer can display section or all monitored picture and data by ZigBee wireless network, but can not carry out control operation.
As shown in Figure 2,3, outstation 2 is cores of native system design, it collects the information of uploading of each preposition intelligent electric power terminal by network information passage, and be communicated to the monitoring host computer 5 on ground, with passing at present control that monitoring host computer 5 assigns and adjusting order to all intelligent electric power devices 3 that are connected with it.Outstation 2 can also be connected on Intranet and Internet by ZigBee wireless network communications interface, realizes remote monitoring.Outstation is arranged at that multiple sensors 6 of down-hole and router 7 and terminal node 8 form.
As shown in Figure 4, intelligent electric power device adopts 16 Chip Microcomputer A RM as core, and Chip Microcomputer A RM is connected with power module, input and output photoelectric isolation module, RS-485 communication interface, liquid crystal display and keyboard circuit, telegraph circuit; Intelligent electric power device adopts unified module, is positioned in high and low pressure switch explosion-proof chamber, forms the preposition intelligent measurement and control unit that Microcomputer Protection, data acquisition and monitoring are on the spot integrated.
Claims (4)
1. the Power Monitored Control System For Underground Mine based on ZigBee wireless technology, it is characterized in that: include ground ZigBee wireless network management system, outstation, intelligent electric power device, described ground ZigBee wireless network management system includes the ZigBee transceiver that receives ZigBee wireless network monitored data or send director data, ZigBee wireless network communications interface, multiple network computers, multiple network computers connect into wireless data transmission network with the ZigBee transceiver that receives ZigBee wireless network monitored data or transmission director data by ZigBee wireless network protocol and communicate, the ZigBee transceiver that receives ZigBee wireless network monitored data or send director data directly and ZigBee wireless network communications interface, CAN communication interface is connected, described outstation comprises and is arranged at multiple sensors, router, AT91RM9200 core processor of down-hole and terminal node composition, described AT91RM9200 core processor is built-in with memory cell, communication interface, input-output unit, man-machine interface, support circuit, power supply and power-off protector unit, described intelligent electric power device adopts 32 Chip Microcomputer A RM as core, and Chip Microcomputer A RM is connected with power module, input and output photoelectric isolation module, RS-485 communication interface, liquid crystal display and keyboard circuit, warning circuit, between the ZigBee transceiver of the reception ZigBee wireless network monitored data of ground ZigBee wireless network management system or transmission director data and outstation, adopt CAN fieldbus and two kinds of communication modes of ZigBee wireless network to carry out communication, between outstation and intelligent electric power device, adopt the communication modes of RS-485 to carry out communication.
2. the Power Monitored Control System For Underground Mine based on ZigBee wireless technology according to claim 1, is characterized in that: CC2430 chip and peripheral circuit that described router or terminal node have enhancement mode 8051 kernels by least one form.
3. the Power Monitored Control System For Underground Mine based on ZigBee wireless technology according to claim 1, it is characterized in that: the work of described outstation is to have router to reach ZigBee transceiver through terminal node detection case by sensor, finally reach face ZigBee wireless network management system, then feed back to AT91RM9200 core processor, carry out accident treatment.
4. the Power Monitored Control System For Underground Mine based on ZigBee wireless technology according to claim 1, is characterized in that: described outstation can also be connected on Intranet and Internet by ZigBee wireless network communications interface, carries out remote monitoring.
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| CN201310719337.3A CN103742195A (en) | 2013-12-20 | 2013-12-20 | Underground coal mine power monitoring system based on ZigBee wireless technology |
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| CN104505949A (en) * | 2015-01-22 | 2015-04-08 | 中国矿业大学 | Mine power network monitoring and guaranteeing system |
| CN110768242A (en) * | 2018-07-27 | 2020-02-07 | 珠海格力电器股份有限公司 | Power peak regulation system and its general data interface and data transmission format |
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| CN110768242A (en) * | 2018-07-27 | 2020-02-07 | 珠海格力电器股份有限公司 | Power peak regulation system and its general data interface and data transmission format |
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Application publication date: 20140423 |