CN101271629A - City rail traffic station on-site mobile detection system based on wireless sensor network - Google Patents
City rail traffic station on-site mobile detection system based on wireless sensor network Download PDFInfo
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- CN101271629A CN101271629A CNA2008100600749A CN200810060074A CN101271629A CN 101271629 A CN101271629 A CN 101271629A CN A2008100600749 A CNA2008100600749 A CN A2008100600749A CN 200810060074 A CN200810060074 A CN 200810060074A CN 101271629 A CN101271629 A CN 101271629A
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Abstract
The invention relates to an on-site mobile detection system based on a wireless sensor network for an urban rail transit station, comprising a hand-held mobile detection node, a wireless base station (a convergent node), the base station of a monitoring terminal and a supervisory control computer. The hand-held mobile detection node and the wireless base station (the convergent node) constitute jointly the mobile wireless sensor network. A wireless communication mode is adopted between all the mobile detection nodes and the wireless base station (the convergent node), and between the wireless base station (the convergent node) and the base station of the monitoring terminal, and between the hand-held mobile nodes; a standard interface RS232 or a USB interface connection is adopted for the communication between the base station of the monitoring terminal and the supervisory control computer; a system network protocol stack adopts self-designed technology basing on a CSMA-CA technology. The mobile detection system of the invention can meet a demand of an on-site real-time mobile detection of various hazardous materials such as a nuclear material, a biochemical material and an explosive substance in the urban rail transit station, which solves the existing problem of a detection dead angle of a wire detection, and avoids a destruction of the existing building facilities in the urban rail transit station by a wire layout at same time.
Description
Technical field
The present invention relates to a kind of mobile detection system, specifically, relate to the on-the-spot mobile detection system of a kind of city rail traffic station based on wireless sensor network.
Background technology
In recent years, along with the quick growth of China's economic development, the quick expansion of city size, the subway construction on ground such as domestic city such as Beijing, Shanghai, Guangzhou is in the high-speed developing period.City rail traffic station has characteristics such as the volume of the flow of passengers is big, geographical environment is complicated, the space is narrow relatively, in case security incident takes place, consequence is hardly imaginable.Therefore, the urban track traffic safety precaution becomes more and more important.
But traditional cable video monitoring means are mainly adopted in urban rail transit in China safety precaution at present, and its major defect is that monitoring range is limited, can only carry out video monitoring to regional area.Simultaneously, these monitoring means are single, lack the fast detecting to nuclear, biochemistry, explosive etc., are difficult to satisfy the safety precaution requirement at city rail station.
At the defective of present city rail traffic station tradition wired monitoring means, we have proposed the on-the-spot mobile detection system of a kind of city rail traffic station based on wireless sensor network.This system all adopts wireless transmission method, need not rewiring, can carry out the scene to dangerous material such as existing rail traffic station kernel, biochemistry, explosives and move detection, solved problems such as dead angle problem that cable network can't survey and monitoring means are single, construction has important use and is worth for the city rail traffic station security system.
Summary of the invention
Therefore, the object of the present invention is to provide the on-the-spot mobile detection system of a kind of city rail traffic station based on wireless sensor network, need not rewiring, can carry out the scene to dangerous material such as nuclear, biochemistry, explosives and move detection and monitoring, satisfy existing city rail traffic station the scene of dangerous material such as nuclear, biochemistry, explosive is surveyed and the monitoring demand.
According to above-mentioned purpose, the on-the-spot mobile detection system of a kind of city rail traffic station provided by the invention based on wireless sensor network, its system architecture diagram is as shown in Figure 1.System comprises as lower device:
Hand-held moves probe node, is used for direct communication between scene detection, node and the wireless base station to dangerous material such as nuclear, biochemistry, explosives and node by the communicating by letter of multi-hop mode and wireless base station, and its structured flowchart as shown in Figure 2;
Wireless base station (aggregation node) is used to collect the detection information in the affiliated area and carries out radio communication with the wireless base station of supervisory control comuter end, and its structured flowchart as shown in Figure 3;
Wireless base station (monitoring client) is used for the radio communication with aggregation node;
Supervisory control comuter is used for mobile probe node is monitored in real time;
As mentioned above, wireless base station (aggregation node) and hand-held move probe node and constitute mobile wireless sensor network jointly.All move probe node and all adopt wireless mode with communicating by letter of base station, base station (aggregation node) and monitoring client base station communication adopt wireless mode, wireless mode is adopted in communication between node and the node, and communication employing standard RS232 interface or USB interface are passed through wired connection between base station and the supervisory control comuter.Adopt standard interface among the present invention, satisfy the demand that city rail traffic station is surveyed multiple class dangerous material such as nuclear, biochemistry, explosive.Simultaneously,, grind the communication of algorithms and wireless communication module certainly, and all adopt wireless mode to realize the remote transmission of detection information, avoided the destruction of wiring rail traffic station existing building facility in view of complex communication environment in the station.
Description of drawings
Fig. 1 is the on-the-spot mobile detection system structured flowchart of the city rail traffic station based on wireless sensor network of the present invention;
Fig. 2 is that hand-held of the present invention moves the probe node structured flowchart;
Fig. 3 is wireless base station of the present invention (aggregation node) structured flowchart.
Embodiment
See also shown in Figure 1ly, on-the-spot mobile detection system of the present invention comprises that hand-held moves probe node 11, wireless base station (aggregation node) 12, wireless base station (monitoring client) 13 and supervisory control comuter 14.
Hand-held moves probe node 11 and in rail traffic station dangerous material such as nuclear, biochemistry, explosive is surveyed, in case detect suspicious object, immediately warning message is sent to wireless base station (aggregation node) 12, if hand-held move probe node 11 from the wireless base station (aggregation node) 12 far away, then can adopt the multi-hop mode that warning message is sent to wireless base station (aggregation node) 12.Wireless base station (aggregation node) 12 is sent to monitoring client base station 13 with the warning message that receives by wireless mode, and monitoring client base station 13 is delivered to supervisory control comuter 14 by the RS232 mouth with warning message.
See also shown in Figure 2ly, hand-held moves probe node 11 and comprises dangerous material detecting module 21, computer module 22, wireless communication module 23 and power modules 24 such as nuclear, biochemistry, explosive.Wherein computer module 22 comprises MCU part 25, UART part 26 and storer 27 parts; Wireless communication module 23 comprises radio frequency part 28, AD/DA part 29 and baseband digital signal processor 30.
When detecting module 21 detects dangerous material such as nuclear, biochemistry, explosive, by UART part 26 detection data is delivered to storer 27 and carry out buffer memory.Flush bonding processor 25 is read the data of storer 27, deliver to Base-Band Processing such as digital signal processor 30 is encoded, digital modulation, spread spectrum, base band data after will handling subsequently is sent to radio frequency part 28 after by 29 conversion of D/A part, and 28 pairs of analog baseband signals of radio frequency part carry out by antenna radiofrequency signal being sent to wireless base station (aggregation node) 12 after carrier modulation, amplification, the filtering.
When ambulatory handheld formula probe node receives data, radio frequency unit 28 is delivered to A/D part 29 to the analog baseband signal after handling, then the digital baseband signal after the conversion is delivered to digital signal processor 30 and carry out Base-Band Processing such as despreading, digital demodulation, decoding, and the writing data into memory after will handling 27.
See also shown in Figure 3ly, wireless base station (aggregation node) 12 mainly comprises power module 31, computer module 32 and wireless communication module 33.Wherein computer module comprises MCU part 34, UART part 35 and memory portion 36; Wireless communication module 33 comprises radio frequency part 37, AD/DA part 38 and baseband digital signal processor 39.
When wireless base station (aggregation node) 12 receives affiliated subdistrict when moving the signal of probe node 11, processing such as wireless communication module 33 is caught to received signal, tracking, demodulation, despreading and decoding, and the data after will handling are delivered to memory portion 36, the 34 further processing of confession MCU part.
When wireless base station (aggregation node) 12 sends data, the data of MCU part 34 readout memories 36, carry out the encapsulation of Frame media access control sublayer, and deliver to Base-Band Processing and radio frequency processing such as carrier modulation, amplification such as wireless communication module 33 is encoded, digital modulation, spread spectrum, mail to monitoring client wireless base station 13 then.
With respect to hand-held probe node 11, owing to need carry out than long-distance transmissions, so the radio-frequency module 37 of wireless base station (aggregation node) 12 needs to be equipped with the bigger power amplifier of transmitted power.
The device of wireless base station (monitoring client) 13 is identical with wireless base station (aggregation node), comprise power module, flush bonding processor module, memory module and wireless communication module, to the transmission data carry out processing such as encoding and decoding, spread spectrum/despreading, modulating/demodulating, finish and wireless base station (aggregation node) between transmission of wireless signals.
The on-the-spot mobile detection system of city rail traffic station that is used for of the present invention is mainly based on wireless sensor network technology.Therefore, for energy safeguards system operate as normal, must there be corresponding network protocol stack to finish functions such as network management, resource allocation, network route, aerial access.The present invention has designed the network protocol stack based on CSMA-CA voluntarily, can satisfy system requirements.
Claims (5)
1. the on-the-spot mobile detection system of the city rail traffic station based on wireless sensor network comprises that hand-held moves probe node (11), wireless base station (aggregation node) (12), monitoring client base station (13) and supervisory control comuter (14); It is characterized in that described hand-held moves probe node and is positioned at a certain zone, station at random, be in real-time mobile status; Described hand-held moves probe node and is made up of dangerous material detecting module, computer module, wireless communication module and power modules such as nuclear, biochemistry, explosives; Wherein, wireless transport module is made up of baseband digital signal processor, AD/DA part and radio frequency part; Computer module is grouped into by MCU part, UART part and memory section; When detecting module detects dangerous material such as nuclear, biochemistry, explosive, by the UART part detection data is delivered to storer and carry out buffer memory; The MCU part is read the data of storer, deliver to Base-Band Processing such as digital signal processor is encoded, digital modulation, spread spectrum, base band data after will handling subsequently is sent to radio frequency part after by the D/A conversion, and radio frequency part carries out by antenna radiofrequency signal being sent to wireless base station (aggregation node) after carrier modulation, amplification, the filtering to analog baseband signal; When ambulatory handheld formula probe node receives data, radio frequency unit is delivered to A/D to the analog baseband signal after handling and is carried out analog to digital conversion, then the digital baseband signal after the conversion is delivered to digital signal processor and carry out Base-Band Processing such as despreading, digital demodulation, decoding, and the writing data into memory after will handling.
2. the on-the-spot mobile detection system of a kind of city rail traffic station according to claim 1 based on wireless sensor network, it is characterized in that described wireless base station (aggregation node) is in a certain zone in the station, be responsible for collecting the interior hand-held of affiliated area and move the probe node data, and be sent to monitoring client; Described wireless base station (aggregation node) mainly is made up of power module, computer module and wireless communication module; When wireless base station (aggregation node) receives affiliated subdistrict when moving the signal of probe node, processing such as wireless communication module is caught to received signal, tracking, demodulation, despreading and decoding, and the data after will handling deliver to memory module, further handle for flush bonding processor; When wireless base station (aggregation node) sends data, data in the flush bonding processor module readout memory module, carry out the encapsulation of Frame media access control sublayer, and deliver to Base-Band Processing and radio frequency processing such as carrier modulation, amplification such as wireless communication module is encoded, digital modulation, spread spectrum, mail to the monitoring client wireless base station then; With respect to the hand-held probe node, owing to need carry out than long-distance transmissions, so the wireless communication module of wireless base station (aggregation node) need be equipped with the bigger power amplifier of transmitted power.
3. the on-the-spot mobile detection system of a kind of city rail traffic station according to claim 1 based on wireless sensor network, it is characterized in that described monitoring client wireless base station is in monitoring place in the rail traffic station, be responsible for carrying out wireless transmission with wireless base station (aggregation node); Described monitoring client wireless base station mainly is made up of power module, computer module and wireless communication module, and the transmission data are carried out processing such as encoding and decoding, spread spectrum/despreading, modulating/demodulating.
4. the on-the-spot mobile detection system of a kind of city rail traffic station based on wireless sensor network according to claim 1 is characterized in that described supervisory control comuter is common P4 computing machine, links to each other with the wireless base station by RS232 interface or USB interface; Described supervisory control comuter is realized each moves the real-time monitoring of probe node in the rail traffic station by the monitoring software on the operation main frame.
5. the on-the-spot mobile detection system of a kind of city rail traffic station according to claim 1 based on wireless sensor network, it is characterized in that described network protocol stack based on the CSMA-CA technology, finish the function such as network management, resource allocation, network route, network insertion of system.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100600749A CN101271629A (en) | 2008-03-05 | 2008-03-05 | City rail traffic station on-site mobile detection system based on wireless sensor network |
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| CNA2008100600749A CN101271629A (en) | 2008-03-05 | 2008-03-05 | City rail traffic station on-site mobile detection system based on wireless sensor network |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666812B (en) * | 2009-09-28 | 2011-06-15 | 李惠 | Radio acceleration strain temperature data collecting system based on solar energy |
| CN102252711A (en) * | 2010-05-21 | 2011-11-23 | 沈阳新邮通信设备有限公司 | Wireless sensor and sensing system |
| CN102802212A (en) * | 2012-08-16 | 2012-11-28 | 杭州家和物联技术有限公司 | Data acquisition system and method of small-scale wireless sensor network orienting to mobile signal source |
| CN104869156A (en) * | 2015-04-30 | 2015-08-26 | 上海新储集成电路有限公司 | System and method for remotely transmitting information |
| CN105092814A (en) * | 2015-09-18 | 2015-11-25 | 毛茂军 | Intelligent explosive detection system based on Zigbee technology |
| CN105203733A (en) * | 2015-09-18 | 2015-12-30 | 毛茂军 | Intelligent explosive detection system |
-
2008
- 2008-03-05 CN CNA2008100600749A patent/CN101271629A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666812B (en) * | 2009-09-28 | 2011-06-15 | 李惠 | Radio acceleration strain temperature data collecting system based on solar energy |
| CN102252711A (en) * | 2010-05-21 | 2011-11-23 | 沈阳新邮通信设备有限公司 | Wireless sensor and sensing system |
| CN102802212A (en) * | 2012-08-16 | 2012-11-28 | 杭州家和物联技术有限公司 | Data acquisition system and method of small-scale wireless sensor network orienting to mobile signal source |
| CN104869156A (en) * | 2015-04-30 | 2015-08-26 | 上海新储集成电路有限公司 | System and method for remotely transmitting information |
| CN105092814A (en) * | 2015-09-18 | 2015-11-25 | 毛茂军 | Intelligent explosive detection system based on Zigbee technology |
| CN105203733A (en) * | 2015-09-18 | 2015-12-30 | 毛茂军 | Intelligent explosive detection system |
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Owner name: CAS JIAXING WIRELESS SENSOR NETWORK ENGINEERING CE Free format text: FORMER OWNER: CAS JIAXING CENTER MICROSYSTEMS INTITUTE BRANCH CENTER Effective date: 20100129 |
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Effective date of registration: 20100129 Address after: 2, building 1, No. 778 Asia Pacific Road, Nanhu District, Zhejiang, Jiaxing Province, China: 314000 Applicant after: Jiaxing Wireless Sensor Network Engineering Center, Chinese Academy of Sciences Address before: A, building four, block JRC, Asia Pacific Road, Nanhu District, Zhejiang City, Jiaxing Province, China: 314000 Applicant before: Microsystem Inst. Branch Center, Jiaxing Center, CAS |
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Open date: 20080924 |