CN102074125A - Low power consumption parking management system based on wireless sensor network, and wireless network nodes - Google Patents
Low power consumption parking management system based on wireless sensor network, and wireless network nodes Download PDFInfo
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Abstract
The invention provides a low power consumption parking management system based on a wireless sensor network, and wireless network nodes, wherein the parking management system includes a display control device, a guide device and wireless network nodes. The wireless network nodes work based on three modes, namely a high energy consumption detection mode, a low energy consumption sleep mode and a monitoring mode. Every wireless network node is responsible for the management of the corresponding stall, a plurality of wireless network nodes constitute an area, each area has one wireless network node serving as the monitoring node which work in the monitoring mode, other wireless network nodes serve as detection nodes which all work in a high energy consumption detection mode or all work in a low energy consumption sleep mode. Due to the adoption of the wireless network nodes with the three working modes, the detection and the monitoring of the stalls can be realized, data about left available stalls can be updated in a real-time manner in the display control device, and the guide device is controlled to guide vehicles into the left available stalls. Therefore, the stalls can be completely managed.
Description
Technical field
The present invention relates to low-power consumption managing system of car parking and wireless network node, belong to field of system management based on wireless sense network.
Background technology
Along with China's rapid development of economy, motor vehicle quantity has presented the growth of blowout formula.Some cities of the medium-and-large-sized city in the whole nation, especially east coastal economy developed regions, the development of managing system of car parking far can not satisfy the demands.According to incompletely statistics, national motor vehicle is about 5: 1 with the ratio on parking stall, and this ratio also will progressively enlarge.Be subjected to the restriction of quantity and scale, most of parking lots all in various degree have situations such as vehicle is crowded, the parking stall is saturated.In the face of so severe form, traditional parking lot management pattern is had too many difficulties to cope with already, and rebuilding at low cost parking lot how is used obtaining that the parking stall can be efficient and rational, and becomes the primary problem that solves of modern parking lot management person.
Present managing system of car parking has three kinds, is respectively managing system of car parking based on camera head monitor, based on the Entrance management system of radio-frequency card with based on the managing system of car parking of imageing sensor.Three kinds of management systems are other management system of Entrance level.
Managing system of car parking based on camera head monitor adopts a large amount of cameras, monitors each parking stall in parking lot in real time, and by video line signal is passed to central control room.In order to guarantee that camera system can not have each parking stall that monitors at dead angle, roughly need per 5 parking stalls that a monitoring camera is installed, and need transform the parking lot, lay a large amount of signal wires.The parking stall level management of camera head monitor is crucial to be the information complicate statistics parking space information that the Control Room staff returns according to camera, and the management in whole parking lot is based on behavior adjustment management, and reliability can not ensure.This type of management system can not be to the parking channeling conduct, and the parking lot management granularity is thicker.
Managing system of car parking based on radio-frequency card is other management system of Entrance level.This type of management system generally is made of master control computer, radio-frequency card and radio-frequency card card reader, if there are a plurality of inlets in the parking lot, then need purchase many cover card-reading apparatus.Vehicle is manually distributed radio-frequency card by the parking lot management personnel when entering the parking lot, the back master control computer of swiping the card begins to charge.Vehicle enters the parking lot, parks voluntarily, without any the guidance system channeling conduct.When vehicle goes out the parking lot, radio-frequency card is returned the parking attendant, the keeper uses the card reader Card Reader to show expense automatically.Managing system of car parking based on radio-frequency card belongs to the management of coarseness parking lot, to parking stall, inside, parking lot resource without any Supervision Measures, just do simple statistics according to total space quantity and current radio-frequency card quantity of chargeing, not only the utilization rate to the parking stall is not high, poor user experience, also stay administrative vulnerability, be difficult for supervision.
Managing system of car parking based on imageing sensor also belongs to other management system of Entrance level, it utilizes imageing sensor is each vehicle photographic that enters the parking lot, be sent to the central primary control computer in real time, and discern by related software, begin automatically to charge after reading vehicle number.The same with all Entrance level management systems, any vehicle that enters the parking lot is not monitored and guided based on the managing system of car parking of imageing sensor, cause the utilization rate of parking stall not high, poor user experience also stays administrative vulnerability, is difficult for supervision.In addition, this system uses picture recognition software that the photo of monitoring camera collection is discerned, and is subjected to factor affecting such as angle easily and causes erroneous judgement, normally carries out in order to guarantee management work, often has managerial personnel and carries out secondary and confirm the waste resource.
Therefore, present managing system of car parking exist can not add up automatically parking stall sky/account for specifying information, parking stall utilization factor not high, be difficult for problems such as the supervision and management and the wasting of resources.
Summary of the invention
The present invention a kind of low-power consumption managing system of car parking and wireless network node based on wireless network, can add up automatically parking stall sky/account for specifying information, it is high to solve in the existing managing system of car parking parking stall utilization factor, the problem that is difficult for supervision and management can also reduce the parking lot maintenance cost simultaneously.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of low-power consumption managing system of car parking based on wireless sense network comprises display control unit, guidance device and wireless network node.Wherein, wireless network node has three kinds of mode of operations, is respectively high energy consumption detecting pattern, low energy consumption park mode and monitoring mode.
Each parking stall of wireless network node management, a plurality of wireless network nodes are formed a zone, there is a wireless network node to be operated in monitoring mode in each zone as monitor node, all the other each wireless network nodes are as detection node, and detection node is operated in high energy consumption detecting pattern or low energy consumption park mode under the control of monitor node.
Whether whether monitor node is used to monitor its affiliated area vehicle turnover, and detect its parking stall of managing and occupied; Whether detection node is operated in high energy consumption detecting pattern following time, detect its parking stall of managing and occupied; Detection node is operated in low energy consumption park mode following time, does not carry out detecting operation.
Monitor node has vehicle when turnover listening to its affiliated area, and all detection node that generate its affiliated area of state of activation information activation enter the high energy consumption detecting pattern; Receive the detection information that each detection node transmits, according to reception detection information and self testing result of its management parking stall being generated parking space information is transferred to display control unit and generates sleep state information and make each detection node of affiliated area enter the low energy consumption park mode.
Detection node enters the high energy consumption detecting pattern after receiving state of activation information, begin to detect separately whether the institute parking stall of manage is occupied, and generates the detection information transmission to monitor node according to testing result; Detection node enters the low energy consumption park mode after receiving sleep state information.
Display control unit is stored vacant parking stall data, and receives the vacant parking stall of parking space information real-time update data; The vacant parking stall data that guidance device is used for storing according to display control unit realize the guide to vehicle.
Wireless network node described in the present invention adopts powered battery; Wireless network node is further used for, and detects dump energy separately, the residual electric quantity that obtains is transferred to the monitor node of its affiliated area;
Monitor node is further used for, and residual electric quantity and the self residual electric weight that receives compared; When the self residual electric weight the most for a long time, do not carry out any response; When the self residual electric weight is not the most for a long time, then make and self withdraw from monitoring mode, the detection node that activates maximum residual charge value correspondence enters monitoring mode.
The present invention adopts the wireless communication mode based on the Zigbee agreement to carry out wireless transmission.
A kind of wireless network node that is used for the low-power consumption managing system of car parking, parking stall of a wireless network node management, wireless network node comprises ultrasonic sensor, vibration transducer and processing and control module.
Wherein, wireless network node has three kinds of mode of operations, is respectively high energy consumption detecting pattern, low energy consumption park mode and monitoring mode.When wireless network node was in monitoring mode, ultrasonic sensor and vibration transducer were in state of activation; When wireless network node was in the high energy consumption detecting pattern, ultrasonic sensor was in state of activation; When wireless network node was in the low energy consumption park mode, ultrasonic sensor was in dormant state.The wireless network node that is in high energy consumption detecting pattern or low energy consumption park mode is called detection node; The wireless network node that is in monitoring mode becomes monitor node.
Whether ultrasonic sensor is used under the state of being activated, detect its parking stall of managing and occupied, and generates the relevant detection information transmission according to testing result and gives processing and control module.Vibration transducer is used under the state of being activated, and whether monitor its affiliated area has vehicle to sail into or roll away from, generates monitoring information according to snoop results and is transferred to processing and control module.
Processing and control module, be used for when the place wireless network node is monitor node, judge according to monitoring information from vibration transducer, when judgement has the vehicle turnover, generate all detection node that state of activation information sends to its affiliated area, enter the high energy consumption detecting pattern to activate these detection node; Judge according to the detection information that is received from detection node and self ultrasonic sensor, generate parking space information and be transferred to display control unit and generate the detection node that sleep state information is transferred to its affiliated area.Processing and control module also is used for, and when the place wireless network node is detection node, after receiving state of activation information, activates the ultrasonic sensor of this wireless network node; Reception is from the detection information of ultrasonic sensor and be transferred to the monitor node of its affiliated area; After the sleep state information that receives from monitor node, make the ultrasonic sensor of this wireless network node enter dormant state.
Beneficial effect
The present invention adopts the wireless network node with three kinds of mode of operations, realization is to the detection and the monitoring of parking stall, vacant parking stall data in the real-time update display control unit, the control guidance device correctly will sail vehicle into and introduce in the room, make the parking stall is utilized fully; Adopt zoned format that the parking stall is managed among the present invention, have only a wireless network node to be operated under the monitoring mode in the zone, be responsible for the vehicle turnover situation of its affiliated area of real-time listening, other wireless network node is controlled by the wireless network node that is operated under the monitoring mode, when having vehicle to pass in and out its affiliated area, detect, therefore can save each wireless network node consumption of electric, reach the order ground of low-power consumption work.
Secondly, the mode that the present invention adopts the electric weight contrast to have holidays by turns compares monitoring to wireless network node, the wireless network node of the electric weight maximum in each zone is operated under the monitoring mode, make that each wireless network node electric quantity consumption is even relatively, only need the unified battery of changing, reduced workman's labor capacity.
In addition, the present invention is based on the Zigbee agreement and carry out wireless transmission, the Zigbee agreement is the wireless communication protocol of a kind of short distance, low rate, low cost, low-power consumption, makes this managing system of car parking have low-power consumption, system is simple, networking mode is flexible and cost is low characteristics.
Description of drawings
Fig. 1 is the synoptic diagram that the present invention is based on the low-power consumption managing system of car parking of wireless sense network.
Fig. 2 is the synoptic diagram of wireless network node of the present invention.
Fig. 3 is the optimized wireless self-networking of low-power consumption managing system of car parking that the present invention is based on wireless sense network
Embodiment
The invention provides a kind of low-power consumption managing system of car parking, as shown in Figure 1, comprise display control unit, guidance device and wireless network node based on wireless sense network.
Wherein, wireless network node has three kinds of mode of operations, is respectively high energy consumption detecting pattern, low energy consumption park mode and monitoring mode.
Whether wireless network node is operated in monitoring mode following time and is called monitor node, and whether be used to monitor its affiliated area has the vehicle turnover, and detect its parking stall of managing and occupied.Whether wherein, monitoring has the function of vehicle turnover to be realized by vibration transducer, and the function whether the detection parking stall is occupied can be realized by ultrasonic sensor.Under monitoring mode, ultrasonic sensor and vibration transducer all are in state of activation.
Wireless network node is operated in the high energy consumption detecting pattern or low energy consumption park mode following time is called detection node.Detection node is operated in high energy consumption detecting pattern following time, and ultrasonic sensor is in state of activation, and whether vibration transducer is in dormant state, detect its parking stall of managing by ultrasonic sensor and occupied.Detection node is operated in low energy consumption park mode following time, and ultrasonic sensor and vibration transducer all are in dormant state, do not carry out detecting operation.In practice, the vibration transducer in the detecting pattern also can be in state of activation, helps monitor node monitoring one's respective area whether the vehicle turnover is arranged, but in order to save energy consumption, in this preferred embodiment, makes the vibration transducer dormancy in the detection node.
Each parking stall of wireless network node management, a plurality of wireless network nodes are formed a zone, have a wireless network node to be operated in monitoring mode as monitor node in each zone, and all the other each wireless network nodes are as detection node.Monitor node has vehicle when turnover listening to its affiliated area, and all detection node that generate its affiliated area of state of activation information activation enter the high energy consumption detecting pattern.The detection node that receives state of activation information enters the high energy consumption detecting pattern, begins to detect separately whether the institute parking stall of manage is occupied, and generates the detection information transmission to monitor node according to testing result.Monitor node receives the detection information that each detection node transmits, according to reception detection information and self testing result of its management parking stall being generated parking space information is transferred to display control unit and generates sleep state information and make each detection node of affiliated area enter the low energy consumption park mode.The detection node that receives sleep state information enters the low energy consumption park mode.
Display control unit is stored vacant parking stall data and is received the vacant parking stall of parking space information real-time update data.
The vacant parking stall data that guidance device is used for storing according to display control unit realize the guide to vehicle.Guidance device can show the information such as position of current unoccupied parking stall for having the display board of the concrete room of reality information on this display board, guidance device can also be for having the arrow of guiding function.This guidance device of hypothesis is the arrow with guiding function in the present embodiment.
Illustrate the course of work of this managing system of car parking below.
As shown in Figure 1, when vehicle enters the parking lot, the display control unit record enters the number-plate number and the time of vehicle, and the vacant parking stall Data Control guidance device according to its storage inside guides when advancing into vehicle simultaneously, makes it sail the regional P with vacant parking stall into.Sail P district when advancing into vehicle into according to the guide of guiding arrow with vacant parking stall.Wireless network node A is operated under the monitoring mode as monitor node among 6 wireless network node A, B in the P district, C, D, E, the F, and all the other each wireless network nodes are operated under the park mode as detection node.
Monitor node A in the P district carries out real-time listening to the P district, when listening to vehicle when entering the P district, generates the state of activation information transmission and activates them to detection node B, C, D, E, the F in P district and enter the high energy consumption detecting pattern.
Each detection node of P district enters the high energy consumption detecting pattern after receiving state of activation information, begin to detect separately whether the institute parking stall of manage is occupied, and generates the detection information transmission to monitor node A according to testing result.Wherein, if the parking stall of detection node C correspondence is occupied, monitor node A generates the optimum wireless-transmission network that corresponding occupy-place information independently builds by each regional monitor node according to the detection information that receives and the detection information of self and is transferred to display control unit, generate sleep state information simultaneously and be transferred to detection node B, C, D, E, F, detection node enters the low energy consumption park mode after receiving sleep state information.Display control unit is according to the vacant parking stall data of the occupy-place information real-time update storage that receives.
Monitor node A in the P district carries out real-time listening to the P district, when listening to vehicle when rolling the P district away from, generates the state of activation information transmission and activates them to detection node B, C, D, E, the F in P district and enter the high energy consumption detecting pattern.
Each detection node of P district enters the high energy consumption detecting pattern after receiving state of activation information, begin to detect separately whether the institute parking stall of manage is occupied, and generates the detection information transmission to monitor node A according to testing result.Wherein, if the parking stall of detection node C correspondence is vacated, monitor node A generates the optimum wireless-transmission network that corresponding room information independently builds by each regional monitor node according to the detection information that receives and the detection information of self and is transferred to display control unit, generate sleep state information simultaneously and be transferred to detection node B, C, D, E, F, detection node enters the low energy consumption park mode after receiving sleep state information.Display control unit is according to the vacant parking stall data of the room information real-time update storage that receives.
When vehicle rolls the parking lot away from, the time that display control unit is gathered license board information and rolled away from, and according to down time of sailing the Time Calculation vehicle into of prior storage.
Be used among the present invention to detect when whether parking stall that each wireless network node manages is occupied and adopt ultrasonic sensor to realize, preferably adopt passive type ultrasonic sensor in the industry, on average each wireless network node can worked more than 2 years under the battery support.Use dry cell as the parking lot perception of probe power and guidance system owing to need not lay a large amount of supply lines, reduced early investment; Simultaneously, because the unlimited sensor power consumption of dry cell power supply is little, power supply cost is very low, greatly reduce the parking lot operation cost, and this scheme construction flexibly, wireless network node can move arbitrarily, can pass through the wireless mode upgrade software, keep the market top standard of product.In practice, can also adopt photoelectric sensor to realize that occupy-place detects.
Because the passive type ultrasonic sensor adopts battery as power supply, in order to prolong the service time of ultrasonic sensor, the present invention makes each wireless network node bear the monitoring task in turn, guarantees group's battery power consumption equilibrium.Specifically, each wireless network node further detects dump energy separately, the residual electric quantity that obtains is transferred to the monitor node of its affiliated area.For example each detection node of P zone detects dump energy separately and the value that will obtain is transferred to monitor node A, and monitor node A is to receiving residual electric quantity and self detection residual electric quantity compares judgement; When working as the self residual electric weight the most for a long time, do not carry out any response, then monitor node A continues to operate under the monitoring mode; When the self residual electric weight is not the most for a long time, then make and self withdraw from monitoring mode, the detection node that activates maximum charge value correspondence enters monitoring mode.The monitoring task is born in turn by each wireless network node, guaranteed group's battery power consumption equilibrium.
Realize information transmission by the Zigbee agreement between each wireless network node of the present invention, this is the wireless communication protocol of a kind of short distance, low rate, low cost, low-power consumption, and it belongs to IEEE 802.15.4 wireless standard standard.Zigbee alliance has formulated data link layer, network layer and application programming interface standard.Zigbee protocol transmission distance is a 10-75 rice, and communication delay is 15-30ms, and addressing mode comprises two kinds of the local addresses of the ieee address of 64bit and 16bit.A Zigbee network can hold maximum 255 subnets, reaches as high as 6.5 ten thousand wireless network nodes.Network topology structure based on the Zigbee agreement mainly contains star, tree-like and netted, and power consumption is very low, and reliability and security are higher, can realize dissimilar cryptographic algorithm.The characteristics that the Zigbee agreement has low-power consumption, system is simple, networking mode is flexible, cost is low and the stand-by period is short relatively are fit to be applied to the monitoring field.
Energy resource consumption based on the wireless network node control circuit of Zigbee agreement is divided into two parts: based on the wireless network node energy consumption of Zigbee agreement and the sensor energy consumption of embedding.If carrying out a call duration time based on the wireless network node of Zigbee agreement is T
c(once transmitting-receiving), the energy consumption of operate as normal is C
1, the park mode energy consumption is C
2, embedded sensors work energy consumption is C, the time of once gathering is T
wThe electric weight of No. 5 batteries of one joint is E, it is N time/day that average each sensor provides service times, and M sensor is one group to carry out the low-power consumption dormancy (on average to do the time of monitoring node is 24/M hour to each sensor, and have vehicle turnover institute wireless network node once to check at every turn), then at total work duration T (my god) following formula arranged:
Wherein, T
1=2M*N*T
cFor each wireless network node carries out time of exchanges data as monitoring node,
T
2=2N*T
cNeed transfer duty during for the wireless network node dormant state to goes forward side by side time of line data transmitting-receiving.
It is 10mA that the present invention adopts the wireless network node energy consumption of on average working, receive and dispatch secondary data 0.5s consuming time, the park mode energy consumption is 2.6uA, the sensor energy consumption of wireless network node is 2mA, once check 2s consuming time, the electric weight of No. 5 batteries of one joint is 1600mph, it is 20 that each sensor on average provides service times, working group's wireless network node quantity is 12, then the native system continuous working period is about 120 days, can expand future and further dwindle energy consumption, maximum continuous working period can reach 1-2, is more than 10 times of wireless network node continuous working period in the traditional Z igbee wireless sensor network.
In order further to reduce the energy resource consumption of native system, the present invention makes and can consume minimum when carrying out data transmission between monitor node and the display control unit by making up a kind of optimum wireless-transmission network.The pattern of setting up of this optimum wireless-transmission network is: as shown in Figure 3, with the nearest zone of distance display control device is the center of circle, radius increases progressively with the step-length of a setting, as to set step-length be 10m, then first radius of a circle is 10m, second radius of a circle is 2*10m, and the parking lot is divided into a plurality of rings district by that analogy.Each ring district is numbered, and numbering of each ring is increasing or decreasing gradually from inside to outside; When wireless network node more than half in certain zone was in ring district x, all wireless network node numberings were identical with ring district x numbering in this zone.As when wireless network node more than half in certain zone is in the 1st annulus, each wireless network node that then should the zone is numbered 1, when wireless network node more than half in certain zone was in the 2nd ring, then each wireless network node with the one's respective area was numbered 2, by that analogy.When the monitor node that is numbered 4 need be in optimum wireless-transmission network that the monitor node under the monitoring mode independently builds by each zone parking space information is transferred to display control unit, then this monitor node seek be numbered 3 and from its nearest monitor node, receive parking space information be numbered 3 monitor node same seek be numbered 2 and from its nearest monitor node, and the like search out optimum transmission plan, parking space information is transferred to display control unit.As shown in Figure 3, wireless self-networking after the optimization that illustrates has reduced the quantity (only being the numbering of monitor node) that converges wireless network node greatly under the prerequisite that guarantees high availability, make total time-delay of whole network less than 10 seconds, the accuracy rate of stopping guide is greater than 95%.(I think that this has problems, and concrete problem is seen Figure of description)
Managing system of car parking of the present invention also comprises video camera, is used to gather the image in the parking lot and is transferred to display control unit realize the realtime graphic in parking lot is monitored.Wherein need not to be directed to each parking stall a video camera is installed, only need several parking stalls to attach together one, can reduce the cost in parking lot like this.The image that video camera is gathered the parking lot is in real time passed to display control unit and is shown, makes things convenient for the staff to understand situation in the parking lot, and display control unit is also stored the image that receives, and checks so that access when needing in the future.
In order to realize above-mentioned managing system of car parking, as shown in Figure 2, the present invention also provides a kind of wireless network node that is used for the low-power consumption managing system of car parking, comprises ultrasonic sensor, vibration transducer and processing and control module.
When wireless network node was in monitoring mode, ultrasonic sensor and vibration transducer were in state of activation.When wireless network node was in the high energy consumption detecting pattern, ultrasonic sensor was in state of activation, and vibration transducer is in dormant state.When wireless network node was in the low energy consumption park mode, ultrasonic sensor and vibration transducer all were in dormant state.
Whether ultrasonic sensor is used under the state of being activated, detect its parking stall of managing and occupied, and generates the relevant detection information transmission according to testing result and gives processing and control module.
Vibration transducer is used under the state of being activated, and whether monitor its affiliated area has vehicle to sail into or roll away from, generates monitoring information according to snoop results and is transferred to processing and control module.
Processing and control module, be used for when the place wireless network node is monitor node, judge according to monitoring information from vibration transducer, when judgement has the vehicle turnover, generate all detection node that state of activation information sends to its affiliated area, enter the high energy consumption detecting pattern to activate these detection node; Judge according to the detection information that is received from detection node and self ultrasonic sensor, generate parking space information and be transferred to display control unit and generate the detection node that sleep state information is transferred to its affiliated area.Processing and control module also is used for, and when the place wireless network node is detection node, after receiving state of activation information, activates the ultrasonic sensor of this wireless network node; Reception is from the detection information of ultrasonic sensor and be transferred to the monitor node of its affiliated area; After the sleep state information that receives from monitor node, make the ultrasonic sensor of this wireless network node enter dormant state.
Wherein, wireless network node comprises that also the power supply detection module is used to detect the dump energy of place wireless network node.Processing and control module is further used for, and when the place wireless network node was monitor node, all detection node were obtained the residual electric quantity of each wireless network node and judged from this wireless network node and region; When the dump energy of judging the place wireless network node the most for a long time, then do not carry out any processing; When the residual electric quantity of judging the place wireless network node is not the most for a long time, then make the place wireless network node withdraw from monitoring mode, activate maximum residual electric weight corresponding wireless network node and enter monitoring mode.
The above only is a preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvement; perhaps part technical characterictic wherein is equal to replacement, these improvement and replace and also should be considered as protection scope of the present invention.
Claims (10)
1. based on the low-power consumption managing system of car parking of wireless sense network, it is characterized in that, comprise display control unit, guidance device and wireless network node;
Wherein, wireless network node has three kinds of mode of operations, is respectively high energy consumption detecting pattern, low energy consumption park mode and monitoring mode;
Each parking stall of wireless network node management, a plurality of wireless network nodes are formed a zone, there is a wireless network node to be operated in monitoring mode in each zone as monitor node, all the other each wireless network nodes are as detection node, and detection node is operated in high energy consumption detecting pattern or low energy consumption park mode under the control of monitor node;
Whether whether monitor node is used to monitor its affiliated area vehicle turnover, and detect its parking stall of managing and occupied;
Whether detection node is operated in high energy consumption detecting pattern following time, detect its parking stall of managing and occupied; Detection node is operated in low energy consumption park mode following time, does not carry out detecting operation;
Monitor node has vehicle when turnover listening to its affiliated area, and all detection node that generate its affiliated area of state of activation information activation enter the high energy consumption detecting pattern; Receive the detection information that each detection node transmits, according to reception detection information and self testing result of its management parking stall being generated parking space information is transferred to display control unit and generates sleep state information and make each detection node of affiliated area enter the low energy consumption park mode;
Detection node enters the high energy consumption detecting pattern after receiving state of activation information, begin to detect separately whether the institute parking stall of manage is occupied, and generates the detection information transmission to monitor node according to testing result; Detection node enters the low energy consumption park mode after receiving sleep state information;
Display control unit is stored vacant parking stall data, and receives the vacant parking stall of parking space information real-time update data;
The vacant parking stall data that guidance device is used for storing according to display control unit realize the guide to vehicle.
2. the low-power consumption managing system of car parking based on wireless sense network according to claim 1 is characterized in that, described detection its function that whether occupied of the parking stall of managing realize by the passive type ultrasonic sensor.
3. the low-power consumption managing system of car parking based on wireless sense network according to claim 1 and 2 is characterized in that, described wireless network node adopts powered battery;
Described wireless network node is further used for, and detects dump energy separately, the residual electric quantity that obtains is transferred to the monitor node of its affiliated area;
Monitor node is further used for, and residual electric quantity and the self residual electric weight that receives compared; When the self residual electric weight the most for a long time, do not carry out any response; When the self residual electric weight is not the most for a long time, then make and self withdraw from monitoring mode, the detection node that activates maximum residual charge value correspondence enters monitoring mode.
4. the low-power consumption managing system of car parking based on wireless sense network according to claim 1, it is characterized in that, this managing system of car parking also comprises video camera, is used to gather the image in the parking lot and is transferred to display control unit realize the realtime graphic in parking lot is monitored.
5. the low-power consumption managing system of car parking based on wireless sense network according to claim 1 is characterized in that, described generation parking space information is transferred to display control unit and is: adopt the wireless communication mode based on the Zigbee agreement to carry out wireless transmission.
6. the low-power consumption managing system of car parking based on wireless sense network according to claim 5, it is characterized in that, described employing is carried out wireless transmission based on the wireless communication mode of Zigbee agreement: with the nearest zone of distance display control device is the center of circle, radius increases progressively with the step-length of a setting, and the parking lot is divided into a plurality of rings district; Each ring district is numbered, and numbering of each ring is increasing or decreasing gradually from inside to outside; When wireless network node more than half in certain zone was in ring district x, all wireless network node numberings were identical with ring district x numbering in this zone; When monitor node transmits parking space information, parking space information is transferred to continuous numbering and, parking space information is transferred to display control unit through a plurality of different monitor nodes of numbering at a distance of nearest monitor node.
7. the low-power consumption managing system of car parking based on wireless sense network according to claim 1 is characterized in that the wireless network node in each zone is 6.
8. be used for the wireless network node of low-power consumption managing system of car parking, it is characterized in that, parking stall of a wireless network node management, wireless network node comprises ultrasonic sensor, vibration transducer and processing and control module;
Wherein, wireless network node has three kinds of mode of operations, is respectively high energy consumption detecting pattern, low energy consumption park mode and monitoring mode;
When wireless network node was in monitoring mode, ultrasonic sensor and vibration transducer were in state of activation;
When wireless network node was in the high energy consumption detecting pattern, ultrasonic sensor was in state of activation;
When wireless network node was in the low energy consumption park mode, ultrasonic sensor was in dormant state;
The wireless network node that is in high energy consumption detecting pattern or low energy consumption park mode is called detection node; The wireless network node that is in monitoring mode becomes monitor node;
Whether ultrasonic sensor is used under the state of being activated, detect its parking stall of managing and occupied, and generates the relevant detection information transmission according to testing result and gives processing and control module;
Vibration transducer is used under the state of being activated, and whether monitor its affiliated area has vehicle to sail into or roll away from, generates monitoring information according to snoop results and is transferred to processing and control module;
Processing and control module, be used for when the place wireless network node is monitor node, judge according to monitoring information from vibration transducer, when judgement has the vehicle turnover, generate all detection node that state of activation information sends to its affiliated area, enter the high energy consumption detecting pattern to activate these detection node; Judge according to the detection information that is received from detection node and self ultrasonic sensor, generate parking space information and be transferred to display control unit and generate the detection node that sleep state information is transferred to its affiliated area;
Processing and control module also is used for, and when the place wireless network node is detection node, after receiving state of activation information, activates the ultrasonic sensor of this wireless network node; Reception is from the detection information of ultrasonic sensor and be transferred to the monitor node of its affiliated area; After the sleep state information that receives from monitor node, make the ultrasonic sensor of this wireless network node enter dormant state.
9. the wireless network node that is used for the low-power consumption managing system of car parking according to claim 8 is characterized in that the vibration transducer in the detection node is in dormant state.
10. be used for the wireless network node of low-power consumption managing system of car parking according to claim 9, it is characterized in that, this wireless network node also comprises the power supply detection module;
The power supply detection module detects the dump energy of place wireless network node;
Described processing and control module is further used for, and when the place wireless network node was monitor node, all detection node were obtained the residual electric quantity of each wireless network node and judged from this wireless network node and region; When the dump energy of judging the place wireless network node the most for a long time, then do not carry out any processing; When the residual electric quantity of judging the place wireless network node is not the most for a long time, then make the place wireless network node withdraw from monitoring mode, activate maximum residual electric weight corresponding wireless network node and enter monitoring mode.
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