CN104361727A - Tunnel environment monitoring method based on wireless sensor network - Google Patents
Tunnel environment monitoring method based on wireless sensor network Download PDFInfo
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Abstract
The invention discloses a tunnel environment monitoring method based on a wireless sensor network. A monitoring center performs real-time monitoring on parameters in a tunnel through a plurality of wireless sensor nodes respectively, meanwhile, the plurality of wireless sensor nodes acquire the respectively monitored data regularly and transmit the data to an aggregation node; the aggregation node receives the data transmitted by the sensor nodes and analyzes and compares the data; as for nodes with acquired data in the normal range, a data transmission unit is used for controlling the corresponding nodes to reduce the measuring frequency; as for collected parameter values exceeding the normal range, the data transmission unit is used for controlling the corresponding nodes to increase the measuring frequency; and corresponding measures are taken by the monitoring center according to parameters uploaded on the aggregation node for work. The tunnel environment monitoring method is reasonable in design, low in cost, simple to operate and flexible and convenient to distribute.
Description
Technical field
The present invention relates to a kind of tunnel environment monitoring method based on wireless sensor network.
Background technology
The health of environment in tunnel to traffic safety and passenger, maintenance work personnel can be with and serve specific question, mainly because the component amount of the temperature in tunnel, humidity, light, harmful gas and accumulation.Most of tunnel is all the passage of all round closure, without guardrail.Without available light, the illumination in tunnel can only be provided by light fixture substantially.After personnel enter tunnel daytime, because light intensity difference inside and outside tunnel is large, human eye can not adapt at once, and glare effect when there will be into black-hole effect during hole and appear, humidity and harmful gas also can damage personnel are healthy.
Under the background that network technology is progressively ripe, there is the problems such as equipment control imperfection, not easy care in traditional tunnel environment monitoring system, and mostly existed system is the direct control processing individual command, need deeply for being responsible for batch research that order controls.Wireless sense network is the important foundation of technology of Internet of things, solves interconnected problem, by the ad hoc network system having perception, a large amount of sensor nodes of process and wireless communication ability form a multi-hop, completes set task.Current tunnel environment monitoring system utilizes Ethernet to carry out the wire transmission of data mostly, there is the Practical Project problems such as cost is high, comprehensive wiring is complicated, telecommunication cable selection, limits with the development prospect to environmental monitoring system.
Such as application number is a kind of safety for tunnel engineering pre-warning management system of " 201220722727.7 ", this utility model discloses a kind of safety for tunnel engineering pre-warning management system, comprises and measures radar terminal, workmen and preparation of construction real time position monitoring system and the environmental monitoring terminal for the gas in Real-Time Monitoring tunnel, water level information by the country rock deformation of the micro-displacement information of linear frequency modulation continuous wave measurement tunnel surrounding.This utility model can carry out Real-Time Monitoring and early warning to construction environment in workmen in tunnel surrounding deformation, tunnel or preparation of construction and tunnel simultaneously, occurrence probability of safety accidents can be reduced, avoid occurring casualties, eliminate safe hidden trouble, more reasonably management and running and security monitoring management can be carried out to site operation personnel, equipment simultaneously.This utility model tunnel environment monitoring system also exists the Practical Project problems such as cost is high, comprehensive wiring is complicated, telecommunication cable selection, limits with the development prospect to environmental monitoring system.
And for example application number is a kind of tunnel environment remote monitoring early warning system and the method for " 201210519187.7 ", this system comprises radio sensing network, embedded gateway, network control system and tunnel environment monitoring center, wherein radio sensing network comprises the wireless sense network data acquisition node being positioned at tested point, described wireless sense network data acquisition node comprises router node and terminal node, described wireless sense network data acquisition node accesses embedded gateway by coordinator node, data are sent to public network by RS232 data communication by embedded gateway and 3G communication module, built-in network control system obtains public network environmental data information by 3G communication module and is connected to remote detection center, tunnel, wherein embedded gateway connect 3G communication module and built-in network control system in 3G communication module carry out point-to-point communication.Also disclose a kind of tunnel environment monitoring method based on radio sensing network accordingly.This invention can be used for the Monitoring and forecasting system in real-time of tunnel and Road Tunnel Environment, and can make counter-measure timely to the change of tunnel environment.Although this invention achieves wireless monitor and transmission with arriving environment, power consumption is high, and cost is higher, detect data and there is error, and lack corresponding node control, make most of node be in idle work state, on energy saving optimizing, still there is very large progressive space.
Summary of the invention
Technical matters to be solved by this invention is the tunnel environment monitoring method providing a kind of low cost based on wireless sensor network, low-power consumption, high reliability for the deficiency of background technology.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
Based on a tunnel environment monitoring method for wireless sensor network, comprise concrete steps as follows:
Step 1, Surveillance center carry out Real-Time Monitoring by multiple wireless sensor node is real-time respectively to the parameters in tunnel, and multiple wireless sensor node is by respective institute Monitoring Data timing acquiring simultaneously, and sends data to aggregation node;
The data that sensor node transmits by step 2, aggregation node carry out receiving, com-parison and analysis, for the node of image data in normal range, control corresponding node by data transmission unit and reduce survey frequency, for the parameter value overrun gathered, then control corresponding node by data transmission unit and increase survey frequency;
Step 3, aggregation node detect each node data in real time, if find, particular sensor node does not transmit data; Then signal transmission is waken up, if can not be waken up for a long time, then failure message is uploaded to Surveillance center;
Step 4, Surveillance center take corresponding measure to devote oneself to work according to the information that aggregation node is uploaded.
Preferably, described sensor node comprises processor module and connected sensor assembly, video monitoring module, sound and light alarm module, serial communication module, data memory module and for providing the power module of electric energy needed for sensor node.
Preferably, described aggregation node comprises a data analysis unit and a data transmission unit, and the data of described data analysis unit to sensor node collection were analyzed by the cycle.
Preferably, described sensor assembly comprises CO sensor, optical sensor and Temperature Humidity Sensor.
Preferably, described processor module and data analysis unit are AVR single chip.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1, reasonable in design, cost is low, simple to operate, to arrange net flexibly and convenient;
2, sensor node forms the wireless sensor network of multi-hop, self-organization by communication, and this ad hoc capability is strong, can real-time synchronization to parameters Real-Time Monitoring in tunnel;
3, the energy consumption of sensor node is low, extensibility strong, positional information of arranging net is directly perceived;
The component content of the temperature in detection tunnel that 4, can be real-time, humidity, light, harmful gas and accumulation, grasp in real time the environmental aspect in tunnel, effectively protects that personnel's is healthy.
Accompanying drawing explanation
Fig. 1 is tunnel environment monitoring method process flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, a kind of tunnel environment monitoring method based on wireless sensor network, comprises concrete steps as follows:
Step 1, Surveillance center carry out Real-Time Monitoring by multiple wireless sensor node is real-time respectively to the parameters in tunnel, and multiple wireless sensor node is by respective institute Monitoring Data timing acquiring simultaneously, and sends data to aggregation node;
The data that sensor node transmits by step 2, aggregation node carry out receiving, com-parison and analysis, for the node of image data in normal range, control corresponding node by data transmission unit and reduce survey frequency, for the parameter value overrun gathered, then control corresponding node by data transmission unit and increase survey frequency;
Step 3, aggregation node detect each node data in real time, if find, particular sensor node does not transmit data; Then signal transmission is waken up, if can not be waken up for a long time, then failure message is uploaded to Surveillance center;
Step 4, Surveillance center take corresponding measure to devote oneself to work according to the information that aggregation node is uploaded.
The present invention relates to a kind of environmental monitoring system, especially a kind of tunnel environment monitoring system is designed, multiple wireless sensor networks that this system comprises convergence center, Surveillance center and is made up of multiple sensor node, described sensor node comprises processor module and connected sensor assembly, video monitoring module, sound and light alarm module, serial communication module, data memory module and for providing the power module of electric energy needed for sensor node.
Described aggregation node comprises a data analysis unit and a data transmission unit, the data of described data analysis unit to sensor node collection were analyzed by the cycle, for the node of image data in normal range, control corresponding node by data transmission unit and reduce survey frequency, for the parameter value overrun gathered, then control corresponding node by data transmission unit and increase survey frequency.
Wherein, described sensor assembly comprises CO sensor, optical sensor and Temperature Humidity Sensor, described sound and light alarm module is light emitting diode and loudspeaker, described processor module and data analysis unit are AVR single chip, and described serial communication module and data transmission unit are CC2530 wireless transmission.
The tunnel environment monitoring system that sensor node of the present invention adopts AVR32 processor to build, there is the low-power consumption of integrated level height, low cost, high reliability, be beneficial to and build tunnel environment monitoring system, greatly can reduce the cost of whole system, improve the dirigibility of system and intelligentized advantage; Whole system can gather the humiture of tunnel surrounding environment, CO concentration, illumination and video information, and through Data Analysis Services, when certain index exceedes normal value, sound and light alarm will give the alarm, and is uploaded to Surveillance center by wireless communication mode simultaneously.
This invention sensor node forms the wireless sensor network of multi-hop, self-organization by communication, this ad hoc capability is strong, can real-time synchronization to the monitoring parameter of tunnel environment.Wireless sensor network is a movability peer-to-peer network being formed, adopted the multi-hop of communication, dynamic group net by tens to up to a hundred nodes.Its objective is the multimedia information stream by dynamic routing and mobile management technical transmission with quality of service requirement.Usual node has lasting Power supply.
Although wireless sensor network has similarity with wireless self-networking, also there is very large difference simultaneously.Sensor network is integrated with monitoring, controls and the network system of radio communication, and interstitial content is more huge, and Node distribution is more intensive; Due to environmental impact and depleted of energy, node more easily breaks down; Environmental interference and node failure easily cause the change of network topology structure; Under normal circumstances, most of sensor node is fixed.In addition, energy, processing power, storage capacity and the communication capacity etc. that have of sensor node are all very limited.The primary design object of conventional wireless network is to provide high quality-of-service and high efficient band width utilizes, and secondly just considers economize energy; And the primary design object of sensor network is the efficiency utilization of the energy, this is also one of sensor network and the most important difference of legacy network.This invention can also be real-time detection tunnel in temperature, humidity, light, the component content of harmful gas and accumulation, grasp the environmental aspect in tunnel in real time, effectively protect that personnel's is healthy.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And these belong to connotation of the present invention the apparent change of extending out or variation still belong to protection scope of the present invention.
Claims (5)
1., based on a tunnel environment monitoring method for wireless sensor network, it is characterized in that: comprise concrete steps as follows:
Step 1, Surveillance center carry out Real-Time Monitoring by multiple wireless sensor node is real-time respectively to the parameters in tunnel, and multiple wireless sensor node is by respective institute Monitoring Data timing acquiring simultaneously, and sends data to aggregation node;
The data that sensor node transmits by step 2, aggregation node carry out receiving, com-parison and analysis, for the node of image data in normal range, control corresponding node by data transmission unit and reduce survey frequency, for the parameter value overrun gathered, then control corresponding node by data transmission unit and increase survey frequency;
Step 3, aggregation node detect each node data in real time, if find, particular sensor node does not transmit data; Then signal transmission is waken up, if can not be waken up for a long time, then failure message is uploaded to Surveillance center;
Step 4, Surveillance center take corresponding measure to devote oneself to work according to the information that aggregation node is uploaded.
2. according to claim 1 based on the tunnel environment monitoring method of wireless sensor network, it is characterized in that: described sensor node comprises processor module and connected sensor assembly, video monitoring module, sound and light alarm module, serial communication module, data memory module and for providing the power module of electric energy needed for sensor node.
3. according to claim 1 based on the tunnel environment monitoring method of wireless sensor network, it is characterized in that: described aggregation node comprises a data analysis unit and a data transmission unit, the data of described data analysis unit to sensor node collection were analyzed by the cycle.
4., according to claim 2 based on the tunnel environment monitoring method of wireless sensor network, it is characterized in that: described sensor assembly comprises CO sensor, optical sensor and Temperature Humidity Sensor.
5., according to claim 2 based on the tunnel environment monitoring method of wireless sensor network, it is characterized in that: described processor module and data analysis unit are AVR single chip.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107404399A (en) * | 2017-06-19 | 2017-11-28 | 深圳市盛路物联通讯技术有限公司 | A kind of method and apparatus based on the Internet of Things data reported management monitored equipment |
| CN110716015A (en) * | 2019-09-27 | 2020-01-21 | 中铁十局集团有限公司 | Wireless relay transmission system for tunnel environment monitoring data |
| CN111432367A (en) * | 2020-03-30 | 2020-07-17 | 国网上海市电力公司 | A LoRa-based wireless monitoring method for underground cable tunnels |
| CN111669721A (en) * | 2019-03-06 | 2020-09-15 | 中国科学院微电子研究所 | A method for collecting and transmitting road guardrail collision data combining wireless broadband and narrowband |
| CN111866786A (en) * | 2020-07-09 | 2020-10-30 | 中国地质科学院地质力学研究所 | Monitoring system and method for karst pipeline flow |
| CN112714464A (en) * | 2020-12-25 | 2021-04-27 | 中国工程物理研究院电子工程研究所 | Large-scale distributed monitoring method based on position information matching |
| CN113438750A (en) * | 2021-06-29 | 2021-09-24 | 广州派租易科技有限公司 | Wireless transmission communication system for construction of shield machine in tunnel |
| CN118032040A (en) * | 2023-12-25 | 2024-05-14 | 上海伟轩环保科技有限公司 | Environment monitoring system based on Internet of things |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070114977A (en) * | 2006-05-30 | 2007-12-05 | 주식회사 케이티 | Tunnel measurement management system by wireless sensor network |
| CN201839317U (en) * | 2010-09-28 | 2011-05-18 | 郭乐江 | Tunnel safety quick detection system based on wireless sensor network |
| CN102175269A (en) * | 2011-01-24 | 2011-09-07 | 华东师范大学 | Sensor device capable of changing sampling frequency and control method thereof |
| CN102612122A (en) * | 2012-02-24 | 2012-07-25 | 苏州博联科技有限公司 | Low-power-consumption wireless sensor network system and controlling and awaking method thereof |
| CN202455538U (en) * | 2011-05-26 | 2012-09-26 | 扬州贝尔斯通科技有限公司 | Wireless sensor network road tunnel environment monitoring communication module |
| CN103076771A (en) * | 2012-12-02 | 2013-05-01 | 兰州鸿创电子科技有限公司 | Tunnel environment remote monitoring and early warning system and method |
-
2014
- 2014-10-14 CN CN201410541493.XA patent/CN104361727A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070114977A (en) * | 2006-05-30 | 2007-12-05 | 주식회사 케이티 | Tunnel measurement management system by wireless sensor network |
| CN201839317U (en) * | 2010-09-28 | 2011-05-18 | 郭乐江 | Tunnel safety quick detection system based on wireless sensor network |
| CN102175269A (en) * | 2011-01-24 | 2011-09-07 | 华东师范大学 | Sensor device capable of changing sampling frequency and control method thereof |
| CN202455538U (en) * | 2011-05-26 | 2012-09-26 | 扬州贝尔斯通科技有限公司 | Wireless sensor network road tunnel environment monitoring communication module |
| CN102612122A (en) * | 2012-02-24 | 2012-07-25 | 苏州博联科技有限公司 | Low-power-consumption wireless sensor network system and controlling and awaking method thereof |
| CN103076771A (en) * | 2012-12-02 | 2013-05-01 | 兰州鸿创电子科技有限公司 | Tunnel environment remote monitoring and early warning system and method |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107404399A (en) * | 2017-06-19 | 2017-11-28 | 深圳市盛路物联通讯技术有限公司 | A kind of method and apparatus based on the Internet of Things data reported management monitored equipment |
| WO2018232975A1 (en) * | 2017-06-19 | 2018-12-27 | 深圳市盛路物联通讯技术有限公司 | Reported internet of things data-based method and device for managing monitored devices |
| CN107404399B (en) * | 2017-06-19 | 2020-03-24 | 深圳市盛路物联通讯技术有限公司 | Method and equipment for managing monitored equipment based on reported data of Internet of things |
| CN111669721A (en) * | 2019-03-06 | 2020-09-15 | 中国科学院微电子研究所 | A method for collecting and transmitting road guardrail collision data combining wireless broadband and narrowband |
| CN110716015A (en) * | 2019-09-27 | 2020-01-21 | 中铁十局集团有限公司 | Wireless relay transmission system for tunnel environment monitoring data |
| CN111432367A (en) * | 2020-03-30 | 2020-07-17 | 国网上海市电力公司 | A LoRa-based wireless monitoring method for underground cable tunnels |
| CN111866786A (en) * | 2020-07-09 | 2020-10-30 | 中国地质科学院地质力学研究所 | Monitoring system and method for karst pipeline flow |
| CN112714464A (en) * | 2020-12-25 | 2021-04-27 | 中国工程物理研究院电子工程研究所 | Large-scale distributed monitoring method based on position information matching |
| CN113438750A (en) * | 2021-06-29 | 2021-09-24 | 广州派租易科技有限公司 | Wireless transmission communication system for construction of shield machine in tunnel |
| CN113438750B (en) * | 2021-06-29 | 2022-08-26 | 广州派租易科技有限公司 | Wireless transmission communication system for construction of shield machine in tunnel |
| CN118032040A (en) * | 2023-12-25 | 2024-05-14 | 上海伟轩环保科技有限公司 | Environment monitoring system based on Internet of things |
| CN118032040B (en) * | 2023-12-25 | 2024-09-06 | 石久资本管理有限公司 | An environmental monitoring system based on the Internet of Things |
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Application publication date: 20150218 |