CN105756708A - Mine safety monitoring system based on ZigBee wireless network technology - Google Patents
Mine safety monitoring system based on ZigBee wireless network technology Download PDFInfo
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- CN105756708A CN105756708A CN201410783709.3A CN201410783709A CN105756708A CN 105756708 A CN105756708 A CN 105756708A CN 201410783709 A CN201410783709 A CN 201410783709A CN 105756708 A CN105756708 A CN 105756708A
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Abstract
The invention relates to a wireless network monitoring technology, a zigbee technology and a wireless sensor, in particular to a mine safety monitoring system based on a ZigBee wireless network technology. The mine safety monitoring system based on the ZigBee wireless network technology comprises terminal node equipment, a wireless base station and a server, wherein the terminal node equipment is used for realizing functions of positioning a miner, giving an alarm and calling for help; the wireless base station is used for realizing data forwarding and routing functions; the server is used for analyzing data and determining and recording information of a worker entering a well; the wireless base station and the server are connected through a bus. The mine safety monitoring system based on the ZigBee wireless network technology has the beneficial effects as follows: the zigbee safety monitoring system with application of low-power-consumption microprocessor combined with corresponding peripheral circuits can collect data of temperature, humidity and gas concentration, can position the underground worker in real time, can transmit information to a ground control center through the zigbee gateway, has the characteristics of low power consumption, low cost, short time delay and high network capacity and is reliable and safe.
Description
Technical field
The present invention relates to wireless network monitoring technology, Zigbee-technology, wireless senser, particularly relate to a kind of mine safety monitoring system based on ZigBee radio network technique.
Background technology
Along with the progress of society, automatically identifying, radio communication, the technology such as computer network is day by day ripe, has promoted the development of coal mine safety monitoring, zigbee wireless communication technology to be applied in subsurface environment monitoring and mine personnel is accurately positioned aspect in real time and achieves effect.Zigbee is the synonym of IEEE802.15.4 agreement.This technology is the wireless communication technology of a kind of short distance, low-power consumption.Be characterized in closely, low complex degree, self-organizing, low-power consumption, low data rate, low cost.It is primarily adapted for use in and automatically controls and remote control field, it is possible to embed various equipment.In brief, zigbee is exactly a kind of cheap, the near radio group-net communication technology of low-power consumption.
At present, the short-distance wireless communication technology that we commonly use mainly has infrared ray, wi-fi, bluetooth, super-broadband tech, near radio transmission and zigbee.Infrared ray can only in point-to-point transmission communication.I wi-fi transmits quality and security performance needs to improve.And hinder that bluetooth develops two because have cost and distance.The shortcoming of super-broadband tech is that transmission range is short.Fig. 3 compares the pluses and minuses of these several technology in detail.
The safety information such as sensor Real-time Collection mine gas concentration humiture, by ZigBee-network wirelessly transmitting data, mail to Surveillance center, can control terminal shows real time information at PC and ARM, note can be sent by GSM when dangerous situation occurs and inform user, short message content includes exceed standard data and position, monitoring point, the audible-visual annunciator of ground and down-hole is reported to the police simultaneously, inform user's dangerous situation in time, PC interface display distress situation can pass through PC note ARM and control the opening and closing of terminal control monitoring node along with the expansion of network, whole wireless network can increase routing node, can need arbitrarily to increase or mobile according to user realizing data remote transmission and monitoring node.
Summary of the invention
The technical problem to be solved in the present invention is: the environment of underground coal mine and personnel activity cannot be carried out implementing monitoring.
Having the purpose of the present invention is to propose to a kind of mine safety monitoring system based on ZigBee radio network technique, wireless senser and radio network technique and introduced mine safety monitoring system, the activity of Real-time Collection personnel in the pit is tracked wirelessly.And radio network technique Zigbee-technology will be introduced, it is introduced into Colliery Security System, propose a set of networking flexibility, autgmentability is strong, safe and reliable safety of coal mines information collecting and monitoring system, the information transmission performance and the efficiency that make Colliery Security System are greatly improved, and when not increasing cost, make every effort to the information technology process improving China's coal-mine safety.
This purpose realizes in the following way:
A kind of mine safety monitoring system based on Zigbee radio network technique, it is characterised in that: include end node devices, be used for realizing mineworker locating, warning, emergency function；Wireless base station, forwards and routing function for data；Server, for being analyzed data, it is determined that and it is recorded into the information of well personnel；Described wireless base station and described server are connected by bus.End node devices is used for being worn on miner, and wireless base station is based upon in tunnel, is used for transmitting signal.
Further, described end node devices includes zigbee module, radio-frequency front-end, warning circuit, emergency module, power supply and supplementary module.
Further, described emergency module is emergency button.
Further, described Zigbee module is used for positioning, and adopts RSSI location algorithm.
Further, described end node devices also includes relay indicating light.
Further, described server is built-in with electronic chart.
The invention has the beneficial effects as follows: it is as emerging wireless communication technology, zigbee safety monitoring system application low-power microprocessor is in conjunction with respective peripheral circuit, can collecting temperature, humidity and gas density data, personnel in the pit can be carried out real-time positioning, and by zigbee gateway, information can be passed to ground maneuvers center, there is following characteristics:
(1) low-power consumption: owing to the transfer rate of ZigBee is low, transmitting power is only 1mW, and have employed park mode, low in energy consumption, therefore the very power saving of ZigBee equipment.ZigBee equipment only just can maintain the use time up to about 6 months to 2 years by two No. 5 batteries of joint, and this is that other wireless device is too far behind to catch up.
(2) cost is low: the initial cost of ZigBee module is at about 6 dollars, and estimation will soon drop to 1.5 2.5 dollars, and Zigbee protocol exempts from patent fee.Low cost is also a crucial factor for ZigBee.
(3) time delay is short: communication delay and the time delay activated from resting state are all very short, and typical search equipment delay 30ms, the time delay that dormancy activates is 15ms, and the time delay of vehicular equipment channel access is 15ms.Therefore ZigBee technology is applicable to controlled in wireless (such as the Industry Control occasion etc.) application that delay requirement is harsh.
(4) network capacity is big: the Zigbee network of a hub-and-spoke configuration can hold at most 254 from equipment and a main equipment, can there are maximum 100 ZigBee-networks simultaneously, and network composition is flexibly in a region.
(5) reliable: to take collision avoidance strategy, simultaneously for need the communication service of fixed-bandwidth to reserve dedicated time slot, avoid the competition and conflict that send data.MAC layer have employed fully validated data-transmission mode, and the packet of each transmission has to wait for the confirmation of recipient.Can retransmit if transmitting procedure goes wrong.
(6) safety: ZigBee provides the packet integrity checking function based on cyclic redundancy check (CRC) (CRC), supports authentication and certification, have employed the AES of AES-128, and each application can determine its security attribute flexibly.
Accompanying drawing explanation
Fig. 1 is the system block diagram of zigbee near radio group-net communication technology；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is that different radio transmission technology has pluses and minuses to compare form.
Detailed description of the invention
As in figure 2 it is shown, terminal node and mobile node, mainly realizing mineworker locating, report to the police, the function such as emergency, its band is with miner, including zigbee module, radio-frequency front-end, warning circuit, emergency button, power supply and supplementary module.Except alarm module, emergency button and power supply, other circuit are all the same with coordinator.So volume and weight all can not be too big, otherwise can cause very big burden, affect miner's normal operation.
Wherein, it is location algorithm that Zigbee location is generally adopted RSSI (Receviedsignalstrengthindex), the method is according to relation in exponential damping of electromagnetic wave signal intensity and transmission range, and thus determine that unknown node can be successively decreased by such as formula along with distance increases from base station distance .RSSI value: in RSSI=-(10nog10d+A) formula, n is signal propagation constant, the transmission environment impact of signal；D is the distance between receiving node and sending node；A is signal intensity during distance sending node 1 meter.
In actual location region, measurement calculates, and the value of first setup parameter A and n, due to each tropism of transmitting node and receiving node antenna.The value of A might not be identical, this needs the average value of n of repetitive measurement to be continually changing, relevant with signal communication environments, it is necessary to first to obtain one group of n value in region, location then after reference mode arranges by measurement, use different values to find a value being best suitable for this regional environment.
RSSI value due to be subject to the outside environmental elements such as sighting distance and multipath impact, can have relatively larger undulatory property, therefore first be filtered process, obtain one be worth more accurately be calculated again we adopt gaussian filtering model carry out RSSI filtering.
High probability generating region, the select probability scope (empirical value in common engineering is 0.6) more than 0.6, after gaussian filtering, the span of RSSI is, wherein
Then again the value of the RSSI within the scope of this is taken out, seek geometrical mean, obtain RSSI value finally, turn finally to node the network address of this value and this node is sent collectively to mobile destination node native system by line regression analysis, parameter is optimized, by gaussian filtering, RSSI value is modified, improve range accuracy, it is easy to extract, become monotonicity relation with distance.
nullIn native system，End node devices mainly completes in down-hole, the monitoring of personnel in the pit location is installed node,It is placed on safety helmet or the belt of well personnel wearing,Adopt the built-in engine of positioning of module,And there is unique address for identifying identity and positional information，Several wireless base stations are installed in tunnel,This base station has data and forwards and routing function，When entering well personnel when the regional activity such as tunnel or work surface,In safety helmet or belt, ID card timing sends radiofrequency signal,This signal enters the scope that wireless base station covers,The time of this signal is extracted in base station,The information such as ID card position,Then wireless network is organized certainly by agreement in this base station,Forward information to next or some wireless base stations,Final access node，This node transfers information to server by bus，Data are analyzed by server,Determine and record the position into well personnel、The information such as time，Uninterrupted by system、The positional information obtaining mine personnel of timing,With its event trace of electronics map depiction,Periodic monitor specific region number,Realize mine personnel following function once accident occurs,Start emergency preplan immediately,Realize the function of emergency action.
Claims (6)
1. the mine safety monitoring system based on Zigbee radio network technique, it is characterised in that:
Including end node devices, it is used for realizing mineworker locating, warning, emergency function；
Wireless base station, forwards and routing function for data；
Server, for being analyzed data, it is determined that and it is recorded into the information of well personnel；
Described wireless base station and described server are connected by bus.
2. the mine safety monitoring system based on Zigbee radio network technique according to claim 1, it is characterised in that: described end node devices includes zigbee module, radio-frequency front-end, warning circuit, emergency module, power supply and supplementary module.
3. the mine safety monitoring system based on Zigbee radio network technique according to claim 2, it is characterised in that: described emergency module is emergency button.
4. the mine safety monitoring system based on Zigbee radio network technique according to claim 2, it is characterised in that: described Zigbee module is used for positioning, and adopts RSSI location algorithm.
5. the mine safety monitoring system based on Zigbee radio network technique according to claim 1, it is characterised in that: described end node devices also includes relay indicating light.
6. the mine safety monitoring system based on Zigbee radio network technique according to claim 1, it is characterised in that: described server is built-in with electronic chart.
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| CN105221139A (en) * | 2015-10-29 | 2016-01-06 | 天津华宁电子有限公司 | Downhole wireless power center (PC) system |
| CN107957577A (en) * | 2017-10-19 | 2018-04-24 | 奥维飞越通信有限公司 | A kind of identification warning system in place and method |
| CN107995592A (en) * | 2017-12-25 | 2018-05-04 | 苏州赛源微电子有限公司 | A kind of WIFI wireless telecommunications personnel positioning management system |
| CN109644353A (en) * | 2018-10-31 | 2019-04-16 | 北京小米移动软件有限公司 | Configuration regulating method, device, electronic equipment and computer readable storage medium |
| CN110535921A (en) * | 2019-08-15 | 2019-12-03 | 感知集团有限公司 | A kind of user information transmitting device |
| CN111866712A (en) * | 2020-07-07 | 2020-10-30 | 浙江大信科技股份有限公司 | Base station with multiple network transmission modes and UWB (ultra wide band) accurate positioning |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105221139A (en) * | 2015-10-29 | 2016-01-06 | 天津华宁电子有限公司 | Downhole wireless power center (PC) system |
| CN107957577A (en) * | 2017-10-19 | 2018-04-24 | 奥维飞越通信有限公司 | A kind of identification warning system in place and method |
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| CN109644353B (en) * | 2018-10-31 | 2021-10-15 | 北京小米移动软件有限公司 | Configuration adjustment method, device, electronic equipment and computer readable storage medium |
| US11812386B2 (en) | 2018-10-31 | 2023-11-07 | Beijing Xiaomi Mobile Software Co., Ltd. | Configuration adjustment methods, apparatuses, electronic device and computer readable storage medium |
| CN110535921A (en) * | 2019-08-15 | 2019-12-03 | 感知集团有限公司 | A kind of user information transmitting device |
| CN111866712A (en) * | 2020-07-07 | 2020-10-30 | 浙江大信科技股份有限公司 | Base station with multiple network transmission modes and UWB (ultra wide band) accurate positioning |
| CN111866712B (en) * | 2020-07-07 | 2022-06-17 | 浙江大信科技股份有限公司 | Fusion base station containing 5G, WIFI6 and UWB accurate positioning |
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