CN203260191U - Traffic monitoring and management system - Google Patents
Traffic monitoring and management system Download PDFInfo
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- CN203260191U CN203260191U CN 201320151716 CN201320151716U CN203260191U CN 203260191 U CN203260191 U CN 203260191U CN 201320151716 CN201320151716 CN 201320151716 CN 201320151716 U CN201320151716 U CN 201320151716U CN 203260191 U CN203260191 U CN 203260191U
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Abstract
The utility model discloses a traffic monitoring and management system. The traffic monitoring and management system comprises at least one traffic parameter acquisition unit used for acquiring traffic parameter information; at least one data processing unit connected with the traffic parameter acquisition unit and used for processing the traffic parameter information, obtaining traffic condition data and making control instructions; and at least one information issuing unit connected with the data processing unit and used for issuing the traffic parameter information, the traffic condition information and the control instructions. The traffic monitoring and management system has the advantages that the traffic parameter information monitoring is high in precision and small in error, the data processing is high in speed and efficiency, and the traffic monitoring and management system is applicable in bad weather, have more functions, and is convenient to promote and utilize.
Description
Technical field
The utility model relates to a kind of traffic monitoring management system.
Background technology
Along with China's rapid economic development and city size constantly enlarge, various transport needs constantly increase, more or less all there is the problem of traffic congestion in cities in China, a kind of intelligentized traffic monitoring management system need to be arranged, provide to the public and to comprise traffic information, parking information, traffic advance notice and in real time dynamic traffic parameter information etc., in order to more reasonably utilize existing road and means of transportation, realize relieving traffic congestion fast, alleviating the effect of blocking up.
The intelligent traffic monitoring management system of prior art, the general collection of just paying attention to traffic parameter information, analysis, arrangement and control to data are all finished by computing machine (Surveillance center) at a distance, instruction and traffic related information that computing machine is made are sent to execution module by communication system, issuing command or traffic related information.In this traffic monitoring management system, the data that gathered need to be transferred to computing machine at a distance by communication system, and computing machine issuing command or traffic related information need to transfer to execution module by communication system.In this process, if described communication system adopts the wire communication mode, its wiring, construction cost are too high, so this communication system often adopts communication, relatively wire communication, its poor stability, failure rate height; In addition, the simultaneously treated data of computing machine are more, and data processing cycle is longer, the data communication step is more, can form certain time-delay when instruction issuing command or traffic related information, because traffic is fast changing, feedback information will form certain error with respect to real information.
The utility model content
The utility model efficiently solves the technical matterss such as the existing data processing cycle of traffic monitoring management system of prior art is grown, traffic parameter information error is large.
The utility model public technology scheme is as follows:
The traffic monitoring management system comprises:
At least one traffic parameter collecting unit is used for gathering traffic parameter information;
At least one data processing unit is connected to described traffic parameter collecting unit, for the treatment of described traffic parameter information, analyze traffic related information, judge traffic events and send steering order; And
At least one information release unit is connected to described data processing unit, is used for issuing described traffic parameter information, described traffic related information, described traffic events and described steering order.
Described traffic monitoring management system also comprises:
One central server is used for receiving described traffic parameter information, described traffic related information, described traffic events and described steering order, and sends the center steering order; And
At least one remote data communication unit is used for transmitting described traffic parameter information, described traffic related information, described traffic events and described steering order to described central server, and transmits described center steering order to described data processing unit;
Described central server is connected to described data processing unit by described remote data communication unit.
Described traffic monitoring management system also comprises:
At least one short-range data communication unit, connect arbitrary data processing unit to another data processing unit, be used for transmitting the described traffic parameter information of arbitrary data processing unit, described traffic related information, described traffic events and described steering order to another data processing unit.
Arbitrary traffic parameter collecting unit comprises:
At least one rfid interrogator is for the information of vehicles of identifying described traffic parameter information;
At least one microwave detector is for detection of the magnitude of traffic flow, space headway information, the speed information in the described traffic parameter information; And
At least one camera is for the traffic pictorial information or the traffic video information that gather described traffic parameter information;
Described rfid interrogator, described microwave detector, described camera are connected to respectively described data processing unit.
Arbitrary data processing unit comprises:
At least one processor is for the treatment of described traffic parameter information, analyze traffic related information, judge traffic events and send steering order; And
At least one image processing apparatus is connected to described processor, is used for traffic pictorial information or the traffic video information of the described traffic parameter of pre-service information.
Arbitrary information release unit comprises:
At least one induced screen is used for issuing described traffic parameter information, described traffic related information and/or described event; And
At least one group of traffic lights are used for issuing described steering order;
Described induced screen, described traffic lights are connected to respectively described data processing unit.
Arbitrary information release unit also comprises:
At least one wireless release unit is used for releasing news to a mobile communication terminal with communication, the corresponding described mobile communication terminal of described wireless release unit.
Wireless release unit comprises:
Wireless launcher is used for the emission wireless communication information;
Wireless receiver is used for receiving wireless communication information;
Wireless controller is connected to respectively described wireless launcher, described wireless receiver, is used for sending steering order to described wireless launcher, described wireless receiver.
Described remote data communication unit is wireline communication network or cordless communication network.
Described short-range data communication unit is wireline communication network or cordless communication network.
Described cordless communication network is 3G communication network, 4G communication network, GPRS communication network or cdma communication network.
Described traffic parameter information comprises any one or more in information of vehicles, vehicle information, speed information, lane information, space headway information, car density information, traffic flow information, traffic flow rate information, roadway occupancy information, traffic pictorial information or the traffic video information; Described traffic related information comprises level of service LOS information, any one or more in block up index CI information, unimpeded index information or the delay time at stop information; Described traffic events comprises that vehicle stop, running red light for vehicle, vehicle intertrack crosstalk, vehicle drive in the wrong direction, the pedestrian takies car lane or battery truck takies any one or more in the car lane.
The utility model has the advantage of that traffic parameter information monitoring precision is high, error is little, data processing speed is fast, efficient is high, goes for the environment of bad weather, and the information issue is quick, and function is more, is convenient to utilization and extention.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model embodiment 2;
Fig. 3 is the structural representation of the utility model embodiment 3;
Fig. 4 is the structural representation of the utility model embodiment 4;
The number in the figure meaning is as follows:
1, traffic parameter collecting unit, 11, rfid interrogator, 12, radio receiving transmitting module, 13, camera;
2, data processing unit, 21, processor, 22, image processing apparatus;
3, information release unit, 31, induced screen, 32, traffic lights; 33, wireless release unit;
4, central server, 5, the remote data communication unit, 6, the short-range data communication unit.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing, those skilled in the art is more clearly understood how to put into practice the utility model.Although should be appreciated that in conjunction with its preferred specific embodiments and described the utility model, these embodiments are intended setting forth, rather than limit scope of the present utility model.
Fig. 1 is the structural representation of the utility model embodiment 1, and embodiment 1 described traffic monitoring management system comprises:
At least one traffic parameter collecting unit 1 is used for gathering traffic parameter information;
At least one data processing unit 2 is connected to described traffic parameter collecting unit, for the treatment of described traffic parameter information, analyze traffic related information, judge traffic events and send steering order; And
At least one information release unit 3 is connected to data processing unit 2, is used for issuing described traffic parameter information, described traffic related information, described traffic events and described steering order.
Described traffic parameter information comprises any one or more in information of vehicles, vehicle information, speed information, lane information, space headway information, car density information, traffic flow information, traffic flow rate information, roadway occupancy information, traffic pictorial information or the traffic video information; Described traffic related information comprises level of service LOS information, any one or more in block up index CI information, unimpeded index information or the delay time at stop information; Described traffic events comprises that vehicle stop, running red light for vehicle, vehicle intertrack crosstalk, vehicle drive in the wrong direction, the pedestrian takies car lane or battery truck takies any one or more in the car lane.
Described traffic monitoring management system can realize the traffic guidance function, described traffic guidance is based on robot calculator, network and the technology such as communicate by letter, and the optimal path key instruction is provided or helps road user to find an optimal path from the starting point to the destination by real-time traffic parameter information to road user according to traveler is settled.
Arbitrary traffic parameter collecting unit 1 comprises:
At least one rfid interrogator 11 is for the information of vehicles of identifying described traffic parameter information;
At least one microwave detector 12 is for detection of the magnitude of traffic flow, space headway information, the speed information in the described traffic parameter information; And
At least one camera 13 is for the traffic pictorial information or the traffic video information that record described traffic parameter information;
Through all being provided with the RFID label near each vehicle the rfid interrogator 11, this RFID label can be installed in the electronic license plate of vehicle, the RFID label comprises RFID chip and RFID antenna, and the RFID chip is preserved the intrinsic information of this vehicle, such as owner information, number-plate number etc.Arbitrary vehicle is through near the rfid interrogator 11, and rfid interrogator 11 can obtain the vehicle information such as owner information, the number-plate number.
Arbitrary data processing unit 2 comprises:
At least one processor 21 is for the treatment of described traffic parameter information, analyze traffic related information, judge traffic events and send steering order; And an image processing apparatus 22, be connected to described processor, be used for traffic pictorial information or the traffic video information of the described traffic parameter of pre-service information.
Traffic parameter collecting unit 1 gathers traffic parameter message transport to data processing unit 2, processor 21 obtains the traffic parameter information such as vehicle, vehicle, the speed of a motor vehicle, track, obtain after treatment the traffic state datas such as the magnitude of traffic flow, roadway occupancy, following distance, thereby make targetedly steering order, realization is to monitoring, analysis, the decision-making at road or crossing, realize to vehicle control, dredge and dispatch.
Arbitrary information release unit 3 comprises:
At least one induced screen 31 is used for issuing described traffic parameter information, described traffic related information and/or described event; And
At least one group of traffic lights 32 are used for issuing described steering order;
Arbitrary information release unit 3 also comprises:
At least one wireless release unit 33 is used for releasing news to a mobile communication terminal (such as mobile phone) with communication, and wireless release unit 33 corresponding described mobile communication terminals use same mobile communications network.
Wireless launcher is used for the emission wireless communication information;
Wireless receiver is used for receiving wireless communication information;
Wireless controller is connected to respectively wireless launcher, wireless receiver, is used for sending steering order to wireless launcher, wireless receiver.Wireless launcher, wireless receiver all are provided with corresponding radio receiver, such as antenna etc.
Information release unit 3 can also comprise vehicular radio (such as broadcasting), website platform etc.The processor 21 of data processing unit 2 is with the described traffic parameter information (information of vehicles at the place, crossing at traffic parameter collecting unit 1 place, vehicle information, speed information, lane information, space headway information, the car density information, traffic flow information, the traffic flow rate information, roadway occupancy information, traffic pictorial information or traffic video information etc.), described traffic related information (level of service LOS information, the index CI information of blocking up, unimpeded index information or delay time at stop information etc.), described traffic events (vehicle stop, running red light for vehicle, the vehicle intertrack crosstalk, vehicle drives in the wrong direction, the pedestrian takies car lane or battery truck takies car lane etc.) etc. information be sent to induced screen 31, the traffic that shows this crossing with literal or figure, the driver of being convenient on the road surface understands, the processor 21 of data processing unit 2 is sent to steering order the traffic lights 32 at this crossing, control the phase place of more than one pair of traffic lights, the effectively signal conversion of the traffic lights 32 of this crossing different directions of control, and then rapid recovery traffic congestion situation.
Fig. 2 is the structural representation of the utility model embodiment 2, and embodiment 2 most of technical schemes are identical with enforcement 1, and its difference technical characterictic is that embodiment 2 described traffic monitoring management systems also comprise:
One central server 4 is used for receiving described traffic parameter information, described traffic related information, described traffic events and described steering order, and sends the center steering order; And
At least one remote data communication unit 5 is used for transmitting described traffic parameter information, described traffic related information, described traffic events and described steering order to central server 4, and transmits described center steering order to data processing unit 2;
Remote data communication unit 5 is wireline communication network or cordless communication network.
Disperse owing to distribute after the rfid interrogator 11 in the traffic parameter collecting unit 1, microwave detector 12, camera 13 are installed, need the data volume of transmission little, preferred wireless communication network mode, cordless communication network are 3G communication network, GPRS communication network or cdma communication network.
Each traffic parameter collecting unit 1 gathers traffic parameter message transport to data processing unit 2, processor 21 obtains described traffic parameter information (information of vehicles, vehicle information, speed information, lane information, space headway information, the car density information, traffic flow information, the traffic flow rate information, roadway occupancy information, traffic pictorial information or traffic video information etc.), obtain after treatment traffic state data (level of service LOS information, the index CI information of blocking up, unimpeded index information or delay time at stop information etc.), further can obtain near the traffic events (vehicle stop in crossing, the utility model place, running red light for vehicle, the vehicle intertrack crosstalk, vehicle drives in the wrong direction, the pedestrian takies car lane or battery truck takies car lane etc.): be sent to central server 4 by remote data communication unit 5.The traffic parameter information that the traffic parameter collecting unit 1 at each crossing gathers of can certainly being about to central server 4 gathers, be made into database, be sent to the data processing unit 2 at each crossing, induced screen 31 by information release unit 3 is presented near the traffic at each crossing this crossing form with literal or figure on the induced screen again, so that the driver understands.Central server 4 can be assigned instruction voluntarily, the monitor staff also can assign instruction by central server 4, the instruction of central server 4 is sent to the data processing unit 2 at each crossing, the processor 21 of data processing unit 2 is sent to steering order the traffic lights 32 at each crossing, control the phase place of all traffic lights 32 of each crossing, the effectively signal conversion of the traffic lights 32 of each crossing different directions of control, and then rapid recovery traffic congestion situation.
Fig. 3 is the structural representation of the utility model embodiment 3, and embodiment 3 most of technical schemes are identical with enforcement 1, and its difference technical characterictic is that embodiment 1 described traffic monitoring management system also comprises:
At least one short-range data communication unit 6 connects arbitrary data processing unit to another data processing unit, is used for transmitting traffic parameter information, traffic state data and the steering order of arbitrary data processing unit to another data processing unit.
Short-range data communication unit 6 is wireline communication network or cordless communication network.Disperse owing to distribute after the rfid interrogator 11 in the traffic parameter collecting unit 1, microwave detector 12, camera 13 are installed, need the data volume of transmission little, preferred wireless communication network mode, cordless communication network are 3G communication network, GPRS communication network or cdma communication network.
The data processing unit 2 of adjacent intersection is intercoursed data by short-range data communication unit 6, traffic parameter information or the traffic state data at one or more crossings near the data processing unit 2 at each crossing can both obtain, and its form with literal or figure is presented on this crossing induced screen 31, so that near the driver this crossing understands the traffic at other places, crossings and makes route selection.The data processing unit 2 at each crossing can both be according near traffic parameter information or the traffic state data at crossing, make further steering order, thereby control the phase place of all traffic lights 32 of this crossing, the effectively signal conversion of the traffic lights 32 of each crossing different directions of control, and then rapid recovery traffic congestion situation.
Fig. 4 is the structural representation of the utility model embodiment 4, and embodiment 4 most of technical schemes are identical with enforcement 2, and its difference technical characterictic is that embodiment 4 described traffic monitoring management systems also comprise:
At least one short-range data communication unit 6 connects arbitrary data processing unit to another data processing unit, is used for transmitting traffic parameter information, traffic state data and the steering order of arbitrary data processing unit to another data processing unit.
Short-range data communication unit 6 is wireline communication network or cordless communication network.Disperse owing to distribute after the rfid interrogator 11 in the traffic parameter collecting unit 1, microwave detector 12, camera 13 are installed, need the data volume of transmission little, preferred wireless communication network mode, cordless communication network are 3G communication network, GPRS communication network or cdma communication network.
The technical scheme of embodiment 4 is the combination of embodiment 2 and embodiment 3, the advantage that has simultaneously the two, the data processing unit 2 at each crossing can both be intercoursed data by short-range data communication unit 6, traffic parameter information or the traffic state data at one or more crossings near obtaining; Also can pass through remote data communication unit 5, traffic parameter information or the traffic state data at one or more crossings near obtaining from central server 4; It is presented on the induced screen 31 at this crossing, so that near the driver this crossing understands the traffic at other places, crossing and makes route selection.Data processing unit 2 can be made steering order voluntarily, also can obtain steering order from central server 4, thereby control the phase place of all traffic lights 32 of this crossing, effectively control the signal conversion of the traffic lights 32 of each crossing different directions, and then rapid recovery traffic congestion situation.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (12)
1. the traffic monitoring management system is characterized in that, comprising:
At least one traffic parameter collecting unit is used for gathering traffic parameter information;
At least one data processing unit is connected to described traffic parameter collecting unit, for the treatment of described traffic parameter information, analyze traffic related information, judge traffic events and send steering order; And
At least one information release unit is connected to described data processing unit, is used for issuing described traffic parameter information, described traffic related information, described traffic events and described steering order.
2. traffic monitoring management system as claimed in claim 1 is characterized in that, also comprises:
One central server is used for receiving described traffic parameter information, described traffic related information, described traffic events and described steering order, and sends the center steering order; And
At least one remote data communication unit is used for transmitting described traffic parameter information, described traffic related information, described traffic events and described steering order to described central server, and transmits described center steering order to described data processing unit;
Described central server is connected to described data processing unit by described remote data communication unit.
3. traffic monitoring management system as claimed in claim 1 is characterized in that, also comprises:
At least one short-range data communication unit, connect arbitrary data processing unit to another data processing unit, be used for transmitting the described traffic parameter information of arbitrary data processing unit, described traffic related information, described traffic events and described steering order to another data processing unit.
4. traffic monitoring management system as claimed in claim 1 is characterized in that, arbitrary traffic parameter collecting unit comprises:
At least one rfid interrogator is for the information of vehicles of identifying described traffic parameter information;
At least one microwave detector is for detection of the magnitude of traffic flow, space headway information, the speed information in the described traffic parameter information; And
At least one camera is for the traffic pictorial information or the traffic video information that gather described traffic parameter information;
Described rfid interrogator, described microwave detector, described camera are connected to respectively described data processing unit.
5. traffic monitoring management system as claimed in claim 1 is characterized in that, arbitrary data processing unit comprises:
At least one processor is for the treatment of described traffic parameter information, analyze traffic related information, judge traffic events and send steering order; And
At least one image processing apparatus is connected to described processor, is used for traffic pictorial information or the traffic video information of the described traffic parameter of pre-service information.
6. traffic monitoring management system as claimed in claim 1 is characterized in that, arbitrary information release unit comprises:
At least one induced screen is used for issuing described traffic parameter information, described traffic related information and/or described event; And
At least one group of traffic lights are used for issuing described steering order;
Described induced screen, described traffic lights are connected to respectively described data processing unit.
7. such as claim 1 or 6 described traffic monitoring management systems, it is characterized in that arbitrary information release unit comprises:
At least one wireless release unit is used for releasing news to a mobile communication terminal with communication, the corresponding described mobile communication terminal of described wireless release unit.
8. traffic monitoring management system as claimed in claim 7 is characterized in that, wireless release unit comprises:
Wireless launcher is used for the emission wireless communication information;
Wireless receiver is used for receiving wireless communication information;
Wireless controller is connected to respectively described wireless launcher, described wireless receiver, is used for sending steering order to described wireless launcher, described wireless receiver.
9. traffic monitoring management system as claimed in claim 2 is characterized in that, described remote data communication unit is wireline communication network or cordless communication network.
10. traffic monitoring management system as claimed in claim 3 is characterized in that, described short-range data communication unit is wireline communication network or cordless communication network.
11., it is characterized in that described cordless communication network is 3G communication network, 4G communication network, GPRS communication network or cdma communication network such as claim 9 or 10 described traffic monitoring management systems.
12. such as each described traffic monitoring management system among the claim 1-6, it is characterized in that described traffic parameter information comprises any one or more in information of vehicles, vehicle information, speed information, lane information, space headway information, car density information, traffic flow information, traffic flow rate information, roadway occupancy information, traffic pictorial information or the traffic video information; Described traffic related information comprises level of service LOS information, any one or more in block up index CI information, unimpeded index information or the delay time at stop information; Described traffic events comprises that vehicle stop, running red light for vehicle, vehicle intertrack crosstalk, vehicle drive in the wrong direction, the pedestrian takies car lane or battery truck takies any one or more in the car lane.
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| CN 201320151716 CN203260191U (en) | 2013-03-29 | 2013-03-29 | Traffic monitoring and management system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280096A (en) * | 2013-03-29 | 2013-09-04 | 苏州数伦科技有限公司 | Traffic monitoring management system |
| CN103713616A (en) * | 2014-01-09 | 2014-04-09 | 国家电网公司 | Transformer substation field safety monitoring system |
| CN104933867A (en) * | 2015-06-17 | 2015-09-23 | 苏州大学 | Road information real-time acquisition device and method based on traffic monitoring video |
| CN105448090A (en) * | 2015-11-29 | 2016-03-30 | 陈国涛 | Interaction type city road traffic management indication system |
| CN107085958A (en) * | 2017-06-24 | 2017-08-22 | 深圳森阳环保材料科技有限公司 | A kind of information issues timely information issuing system |
| CN107103757A (en) * | 2017-05-19 | 2017-08-29 | 武汉为华智慧城市科技有限公司 | A kind of method that regional traffic flow detection is carried out using white spectrum communication |
| CN107103760A (en) * | 2017-06-24 | 2017-08-29 | 深圳源广安智能科技有限公司 | A kind of high traffic behavior monitoring system of level monitoring |
| CN107146413A (en) * | 2017-06-24 | 2017-09-08 | 梧州市兴能农业科技有限公司 | A kind of smart city service platform |
| CN107665578A (en) * | 2016-07-27 | 2018-02-06 | 上海宝康电子控制工程有限公司 | Management and control system and method is integrated based on the traffic that big data is studied and judged |
| CN108417070A (en) * | 2018-04-25 | 2018-08-17 | 张维 | A kind of road vehicle guiding system based on big data |
| CN110310533A (en) * | 2019-04-01 | 2019-10-08 | 北方工业大学 | Demonstration system and method for urban road traffic control and experiment |
| US11645906B2 (en) * | 2021-04-29 | 2023-05-09 | Tetenav, Inc. | Navigation system with traffic state detection mechanism and method of operation thereof |
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2013
- 2013-03-29 CN CN 201320151716 patent/CN203260191U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280096A (en) * | 2013-03-29 | 2013-09-04 | 苏州数伦科技有限公司 | Traffic monitoring management system |
| CN103713616A (en) * | 2014-01-09 | 2014-04-09 | 国家电网公司 | Transformer substation field safety monitoring system |
| CN104933867A (en) * | 2015-06-17 | 2015-09-23 | 苏州大学 | Road information real-time acquisition device and method based on traffic monitoring video |
| CN104933867B (en) * | 2015-06-17 | 2017-05-24 | 苏州大学 | Road information real-time acquisition method based on traffic monitoring video |
| CN105448090A (en) * | 2015-11-29 | 2016-03-30 | 陈国涛 | Interaction type city road traffic management indication system |
| CN107665578A (en) * | 2016-07-27 | 2018-02-06 | 上海宝康电子控制工程有限公司 | Management and control system and method is integrated based on the traffic that big data is studied and judged |
| CN107103757A (en) * | 2017-05-19 | 2017-08-29 | 武汉为华智慧城市科技有限公司 | A kind of method that regional traffic flow detection is carried out using white spectrum communication |
| CN107103760A (en) * | 2017-06-24 | 2017-08-29 | 深圳源广安智能科技有限公司 | A kind of high traffic behavior monitoring system of level monitoring |
| CN107146413A (en) * | 2017-06-24 | 2017-09-08 | 梧州市兴能农业科技有限公司 | A kind of smart city service platform |
| CN107085958A (en) * | 2017-06-24 | 2017-08-22 | 深圳森阳环保材料科技有限公司 | A kind of information issues timely information issuing system |
| CN108417070A (en) * | 2018-04-25 | 2018-08-17 | 张维 | A kind of road vehicle guiding system based on big data |
| CN110310533A (en) * | 2019-04-01 | 2019-10-08 | 北方工业大学 | Demonstration system and method for urban road traffic control and experiment |
| US11645906B2 (en) * | 2021-04-29 | 2023-05-09 | Tetenav, Inc. | Navigation system with traffic state detection mechanism and method of operation thereof |
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