CN103065498B - Parking stall management method - Google Patents
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- CN103065498B CN103065498B CN201210567821.4A CN201210567821A CN103065498B CN 103065498 B CN103065498 B CN 103065498B CN 201210567821 A CN201210567821 A CN 201210567821A CN 103065498 B CN103065498 B CN 103065498B
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Abstract
The invention provides a kind of parking stall management method. Relate to fields of application of sensor networks; Solve more complicated, the inefficient problem of the calibration value handling process having. The method comprises: gateway is collected current parking stall status data by described geomagnetic sensor, described parking stall status data comprises node number and the ground magnetic value of geomagnetic sensor corresponding to described parking stall, described node number unique identification one parking stall and corresponding geomagnetic sensor thereof; Whether the absolute difference that judges the calibration value on described parking stall status data and this parking stall is less than preset parking threshold value; In the time that described absolute difference is greater than described parking position value, judging that described parking stall is current has car to berth. Technical scheme provided by the invention is applicable to parking stall measure, has realized gateway and has detected parking stall dead ship condition.
Description
Technical field
The present invention relates to fields of application of sensor networks, relate in particular to a kind of parking stall management method.
Background technology
In existing parking stall measure system, gateway is directly all node datas to be directly sent to backstageServer, has increased unnecessary transfer of data on the one hand, in addition on the one hand because number of nodes is very large,All nodes are carried out to data analysis, and the work amount of calculation that calibration value is followed the trail of renewal is very large, and backstage is takenThe requirement of business device is very high.
To sum up, existing calibration value handling process is more complicated, and efficiency is low.
Summary of the invention
The invention provides a kind of parking stall management method, solved existing calibration value handling process more complicated,Inefficient problem.
A kind of parking stall management method, in parking stall, place is equipped with geomagnetic sensor, and the method comprises:
Initialize the initial alignment value on described parking stall; Comprise: collect at least twice by geomagnetic sensorDescribed parking stall is at the parking stall status data without under car parked state; Described in asking, described at least twice, stopPosition in the parking stall status data without under car parked state the mean value of magnetic value, described mean value is doneFor the initial alignment value on described parking stall; Store described initial alignment value and corresponding extremely demarcation of node number thereofIn value queue;
Gateway is collected current parking stall status data by described geomagnetic sensor, and wherein, described earth magnetism passesThe every 10s of sensor gathers once current parking stall status data, described in described parking stall status data comprises, stopsThe node number of geomagnetic sensor corresponding to parking stall and ground magnetic value, described node number unique identification one parking stall andThe geomagnetic sensor that it is corresponding;
Whether the absolute difference that judges the calibration value on described parking stall status data and this parking stall is less than in advanceThe parking threshold value of putting;
In the time that described absolute difference is greater than described parking position value, judging that described parking stall is current has car to stopPool.
Preferably, the difference of the calibration value on described judgement described parking stall status data and this parking stall is absoluteThe step whether value is less than preset parking threshold value also comprises afterwards:
In the time that described absolute difference is less than or equal to described parking position value, judge that described parking stall is currentBerth without car.
Preferably, above-mentioned parking stall management method also comprises:
Upgrade described calibration value.
Preferably, the described calibration value of described renewal comprises:
Described in gathering at least twice, parking stall is at the parking stall status data without under car parked state, described in askingIn the status data of parking stall the mean value of magnetic value;
According to the node number on described parking stall, in described calibration value queue, obtain the current of described parking stallCalibration value;
The absolute value of the current demarcation value difference of more described mean value and described parking stall and preset renewal are demarcatedValue threshold value;
In the time that described absolute value is greater than described renewal calibration value threshold value, judgement need to be upgraded calibration value, uses instituteState mean value and substitute described current calibration value, as the new calibration value on described parking stall.
Preferably, the absolute value of the current demarcation value difference of more described mean value and described parking stall and presetAfter upgrading the step of calibration value threshold value, also comprise:
In the time that described absolute value is less than or equal to described renewal calibration value threshold value, judges not need to upgrade and demarcateValue, retains current calibration value.
Preferably, described in described collection at least twice parking stall at the parking stall state without under car parked stateData comprise:
The seek common ground absolute value of difference of double parking stall, a parking stall status data;
More described absolute value and preset base state threshold interval;
Within described absolute value drops on described base state threshold interval time, retain described parking stall stateData as described parking stall at the parking stall status data without under car parked state, by described parking stall shapeState data are saved to buffer area corresponding to described parking stall.
Preferably, the ground magnetic value in the status data of described parking stall and the difference of described calibration valueAfter the step of absolute value and preset base state threshold interval, also comprise:
Outside described absolute value drops on described base state threshold interval time, abandon described dead ship condition numberAccording to.
The invention provides a kind of parking stall management method, gateway is collected current stopping by described geomagnetic sensorParking space state data, described parking stall status data comprises the joint of geomagnetic sensor corresponding to described parking stallPeriod and ground magnetic value, described node number unique identification one parking stall and corresponding geomagnetic sensor thereof, judgementWhether the absolute difference of the calibration value on described parking stall status data and this parking stall is less than preset parkingThreshold value, in the time that described absolute difference is greater than described parking position value, judging that described parking stall is current has a carBerth, complete the collection of parking stall status data and the judgement of dead ship condition by gateway, sentence by ground magnetic valueDisconnected dead ship condition, has saved the procedure links that judges parking stall parking state, has improved judgement efficiency and standardExactness, has solved more complicated, the inefficient problem of existing calibration value handling process.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of parking space management system of providing of embodiments of the invention one;
Fig. 2 is that a kind of parking stall management method that embodiments of the invention two provide judges whether that car berthsFlow chart;
Fig. 3 is the stream that a kind of parking stall management method that embodiments of the invention two provide generates primary standard valueCheng Tu;
Fig. 4 is the flow process that a kind of parking stall management method that embodiments of the invention two provide is upgraded standard valueFigure;
Fig. 5 collects without car parked state in a kind of parking stall management method of providing of embodiments of the invention twoUnder the flow chart of parking stall status data.
Detailed description of the invention
Existing gateway is directly all node datas to be directly sent to background server, increases on the one handAdd unnecessary transfer of data, on the one hand because number of nodes is very large, all nodes have been carried out in additionData analysis, the work amount of calculation that calibration value is followed the trail of renewal is very large, very high to the requirement of background server.Embodiments of the invention provide a kind of parking stall management method, by the algorithm of data analysis and calibration value tracking,Be put on gateway device, can effectively reduce the data volume (only sending the information of stopping) of transmission, effectivelyThe calculating pressure that ground alleviates server (because the node of each gateway management can be not too many, is generally no more than100).
Hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated. It should be noted that,In the situation of not conflicting, the feature in embodiment and embodiment in the application can be combined mutually.
First by reference to the accompanying drawings, embodiments of the invention one are described.
The embodiment of the present invention provides a kind of parking space management system, and the structure of this system as shown in Figure 1, is wrappedDraw together gateway device 101 and at least one be placed in parking stall and with parking stall geomagnetic sensor one to one102, described geomagnetic sensor 102 has unique node number.
Preferably, described gateway device 101 comprises:
RF transceiver 1011, collects current parking stall status data by described geomagnetic sensor 102,Described parking stall status data comprises node number and the earth magnetism of geomagnetic sensor corresponding to described parking stall 102Value;
The parking stall status data of collecting is sent to processor 1012 by described RF transceiver 1011, instituteState the absolute difference that processor 1012 judges the calibration value on described parking stall status data and this parking stallWhether be less than preset parking threshold value, and in the time that described absolute difference is greater than described parking position value, sentenceDescribed parking stall is current calmly has car to berth.
Preferably, described gateway device 101 also comprises register 1013;
Described RF transceiver 1011 collect at least twice by described geomagnetic sensor 102 described in parking stallAt the parking stall status data without under car parked state and transfer to described processor 1012, described processor1012 generate at the parking stall status data without under car parked state on parking stall described at least twice according to thisThe initial alignment value on described parking stall, is stored to described register 1013 by described initial alignment value.
Preferably, described RF transceiver 1011 is collected at least twice by described geomagnetic sensor 102State parking stall at the parking stall status data without under car parked state and transfer to described processor 1012, instituteState processor 1012 according to this described at least twice parking stall at the parking stall state without under car parked stateData judge whether to upgrade calibration value, and in the time need to upgrading calibration value, new calibration value are substituted formerCalibration value is stored to described register 1013.
Preferably, described gateway device 101 also comprises buffer area 1014;
Described RF transceiver 1011 collect at least twice by described geomagnetic sensor 102 described in parking stallAt the parking stall status data without under car parked state and transfer to described processor 1012, described processor1012 by parking stall described in described at least twice in the parking stall status data storage without under car parked stateTo described buffer area 1014.
Preferably, described RF transceiver 1011 is specially CC1101 chip.
Preferably, described register 1013 and described buffer area 1013 are described gateway device 101A part for memory field.
Below in conjunction with accompanying drawing, embodiments of the invention two are described.
The embodiment of the present invention provides a kind of parking stall management method, in conjunction with parking space management system shown in Fig. 1,Use the flow process of the method confirmation parking stall state as shown in Figure 2, comprising:
Step 201, gateway are collected current parking stall status data by described geomagnetic sensor;
In this step, gateway receives the parking stall status data that geomagnetic sensor is collected. Described parking stall shapeState data comprise node number and the ground magnetic value of geomagnetic sensor corresponding to described parking stall, and described node number onlyOne mark one parking stall and corresponding geomagnetic sensor thereof.
Generally, the every 10s of geomagnetic sensor once gathers, and by the ground magnetic value collecting andThe node number composition parking stall status data of this geomagnetic sensor is sent to gateway
Step 202, judge the absolute difference of the calibration value on described parking stall status data and this parking stallWhether be less than preset parking threshold value;
In this step, first according to the node number in the state token of parking stall from preset standard value queueFind out the calibration value on this parking stall, it is poor that the ground magnetic value in dead ship condition data and this calibration value are done, thanThe size of poor absolute value and preset parking threshold value. Described parking threshold value is that a preset difference (passesThe difference of sensor data and its calibration value) reference value. Reduce the threshold value of stopping, can increase the rate of false alarm of system(such as, close on parking stall and stop large on the impact change of this parking stall); Increase parking threshold value, can make system(such as, some car, the impact of magnetic value is less over the ground, if now stop threshold value for sensitivityGreatly, can not produce parking information). Can be according to actual needs, as parking stall size, geomagnetism detecting deviceSusceptibilitys etc., set suitable parking threshold value.
When being, enter step 204 in judged result, while being no, enter step 203 in judged result.
Step 203, in the time that described absolute difference is greater than described parking position value, judge described parking stallCurrent have car to berth.
Step 204, in the time that described absolute difference is less than or equal to described parking position value, described in judgementParking stall is current berths without car.
In the embodiment of the present invention, need to safeguard a standard value, as the reference that judges whether parking, headFirst, need in the time that system starts, initialize a primary standard value, this flow process as shown in Figure 3, comprising:
Step 301, collect at least twice by geomagnetic sensor described in parking stall under without car parked stateParking stall status data;
Preferably, in this step, gateway can gather repeatedly without stopping under car parked state by geomagnetic sensorParking space state data are as sample, and the parking stall status data of collecting can be temporary in buffer area, to doFor calculating the foundation of primary standard value. The parking stall status data of each geomagnetic sensor is preserved separately, excellentChoosing, can preserve 20 up-to-date parking stall status datas.
Step 302, ask described in described at least twice parking stall at the parking stall state without under car parked stateIn data the mean value of magnetic value, the initial alignment value using described mean value as described parking stall;
Step 303, store described initial alignment value and corresponding node number thereof to calibration value queue.
In detecting dead ship condition, can collect without the dead ship condition data under car parked state, rootAccording to these dead ship condition data, standard value is upgraded, idiographic flow as shown in Figure 4, comprising:
Described in step 401, collection at least twice, parking stall is at the parking stall status number without under car parked stateAccording to, ask in the status data of described parking stall the mean value of magnetic value;
Preferably, in this step, gateway can be by ten of geomagnetic sensor collection time or 20 times without the car shape that berthsParking stall status data under state is as sample, and the parking stall status data of collecting can be temporary in buffer areaIn, so that subsequent calls is calculated standard value.
Step 402, according to the node number on described parking stall, described in obtaining in described calibration value queue, stopThe current calibration value of parking stall;
The absolute value of step 403, the current demarcation value difference of more described mean value and described parking stall and presetRenewal calibration value threshold value;
Upgrading calibration value threshold value is the foundation for judging whether to upgrade calibration value. Upgrade and demarcate threshold valueSo fixed that to increase, can make the sensitivity of system; Upgrade demarcation threshold value and reduce, can increase the wrong report of systemRate (such as, close on parking stall and stop large on the impact change of this parking stall). Can be according to actual needs, as stoppedPosition size, geomagnetism detecting device susceptibility etc., set suitable parking threshold value.
Step 404, in the time that described absolute value is greater than described renewal calibration value threshold value, judge need upgrade markDefinite value, with the alternative described current calibration value of described mean value, as the new calibration value on described parking stall.
Step 405, in the time that described absolute value is less than or equal to described renewal calibration value threshold value, judge do not needUpgrade calibration value, retain current calibration value.
It should be noted that, it is a lasting long-term process that calibration value upgrades, and need to follow the tracks of of ground alwaysMagnetic Sensor uploading data, therefrom tells without the parking stall status data under car parked state, just can sentenceDisconnected whether renewal. The data of single, can not affect calibration value. Certain is larger or less value once,When processing, be considered to burr one time, can ignore.
The status data of parking stall each time of a geomagnetic sensor collection is all to calculate this parking stall calibration valueReference value, judge whether to upgrade according to these reference values. Preferably, there is new parking at every turnWhen position status data is uploaded to gateway device, all need to do the judgement of once whether upgrading calibration value.
In step 301 and step 401, need to be according to the parking stall status data without under car parked stateCalculate calibration value, the parking stall management method that the embodiment of the present invention provides, can also be on numerous parking stallsIn status data, filter out the parking stall status data while berthing without car, as calculating the effective of calibration valueSample, its flow process as shown in Figure 5, comprising:
The absolute value of the difference of step 501, double parking stall, the parking stall status data of seeking common ground;
Step 502, more described absolute value and preset base state threshold interval;
This step be variation in order to judge double parking stall status data be whether because occurred fromWithout stopping to there being dead ship condition to change, when variation exceedes a normal scope, the absolute value of difference is notCan drop on base state threshold interval time, think and have burr, parking stall status data need to be abandoned.Otherwise think that parking stall status data is effective, can act on without the parking stall status data under car parked state and protectingStay.
Step 503, within described absolute value drops on described base state threshold interval time, described in reservationParking stall status data as described parking stall at the parking stall status data without under car parked state, by instituteState parking stall status data and be saved to buffer area corresponding to described parking stall.
Step 504, outside described absolute value drops on described base state threshold interval time, described in abandoningDead ship condition data.
Embodiments of the invention provide a kind of parking stall management method and system, comprise gateway device and at leastOne be placed in parking stall and with parking stall geomagnetic sensor one to one, described geomagnetic sensor has onlyOne node number gateway is collected current parking stall status data, described parking stall by described geomagnetic sensorStatus data comprises node number and the ground magnetic value of geomagnetic sensor corresponding to described parking stall, described node numberUnique identification one parking stall and corresponding geomagnetic sensor thereof, judge that described parking stall status data and this stopWhether the absolute difference of the calibration value of parking stall is less than preset parking threshold value, large in described absolute differenceIn the time of described parking position value, judging that described parking stall is current has car to berth, and completes parking stall shape by gatewayThe collection of state data and the judgement of dead ship condition, judge dead ship condition by ground magnetic value, saved judgement and stoppedThe procedure links of parking stall dead ship condition, has improved judgement efficiency and the degree of accuracy, has solved existing calibration valueMore complicated, the inefficient problem of handling process.
The all or part of step that one of ordinary skill in the art will appreciate that above-described embodiment can make to use tricksCalculation machine program circuit is realized, and described computer program can be stored in a computer-readable recording medium,Described computer program (as system, unit, device etc.) on corresponding hardware platform is carried out,In the time carrying out, comprise step of embodiment of the method one or a combination set of.
Alternatively, all or part of step of above-described embodiment also can realize with integrated circuit, thisA little steps can be made into respectively integrated circuit modules one by one, or by the multiple modules in them orStep is made into single integrated circuit module and realizes. Like this, the present invention is not restricted to any specific hardPart and software combination.
Each device/functional module/functional unit in above-described embodiment can adopt general calculation elementRealize, they can concentrate on single calculation element, also can be distributed in multiple calculation element institute groupOn the network becoming.
Each device/functional module/functional unit in above-described embodiment is realized with the form of software function moduleAnd as production marketing independently or while using, can be stored in a computer read/write memory medium.The above-mentioned computer read/write memory medium of mentioning can be read-only storage, disk or CD etc.
Any be familiar with those skilled in the art the present invention disclose technical scope in, can think easilyTo changing or replacing, within all should being encompassed in protection scope of the present invention. Therefore, protection model of the present inventionEnclose and should be as the criterion with the protection domain described in claim.
Claims (7)
1. a parking stall management method, is characterized in that, in parking stall, place is equipped with geomagnetic sensor, the methodComprise:
Initialize the initial alignment value on parking stall; Comprise: gather described at least twice by geomagnetic sensorParking stall is at the parking stall status data without under car parked state; Described in asking, described at least twice, parking stall existsWithout in the parking stall status data under car parked state the mean value of magnetic value, using described mean value as instituteState the initial alignment value on parking stall; Store the node number of described initial alignment value and correspondence thereof to calibration value teamIn row;
Gateway is collected current parking stall status data by described geomagnetic sensor, and wherein, described earth magnetism passesThe every 10s of sensor gathers once current parking stall status data, described in described parking stall status data comprises, stopsThe node number of geomagnetic sensor corresponding to parking stall and ground magnetic value, described node number unique identification one parking stall andThe geomagnetic sensor that it is corresponding;
Whether the absolute difference that judges the calibration value on described parking stall status data and this parking stall is less than in advanceThe parking threshold value of putting;
In the time that described absolute difference is greater than parking position value, judging that described parking stall is current has car to berth.
2. parking stall according to claim 1 management method, is characterized in that, stops described in described judgementWhether the absolute difference of the calibration value on parking space state data and this parking stall is less than preset parking threshold valueAfter step, also comprise:
In the time that described absolute difference is less than or equal to described parking position value, judge that described parking stall is currentBerth without car.
3. parking stall according to claim 1 management method, is characterized in that, the method also comprises:
Upgrade the calibration value on described parking stall.
4. parking stall according to claim 3 management method, is characterized in that, stops described in described renewalThe calibration value of parking stall comprises:
Described in gathering at least twice, parking stall is at the parking stall status data without under car parked state, described in askingIn the status data of parking stall the mean value of magnetic value;
According to the node number on described parking stall, in described calibration value queue, obtain the current of described parking stallCalibration value;
The absolute value of the current demarcation value difference on more described mean value and described parking stall and preset renewal markDefinite value threshold value;
When described absolute value is greater than described renewal calibration value threshold value, judgement need to be upgraded described parking stallCalibration value, with the alternative described current calibration value of described mean value, as the new calibration value on described parking stall.
5. parking stall according to claim 4 management method, is characterized in that, more described mean valueWith the step of the absolute value of the current demarcation value difference on described parking stall and preset renewal calibration value threshold value itAfter, also comprise:
In the time that described absolute value is less than or equal to described renewal calibration value threshold value, judges and do not need described in renewalThe calibration value on parking stall, retains the current calibration value on described parking stall.
6. according to the parking stall management method described in claim 1 or 4, it is characterized in that, described collection extremelyDescribed in few twice, parking stall comprises at the parking stall status data without under car parked state:
The seek common ground absolute value of difference of double parking stall, a parking stall status data;
More described absolute value and preset base state threshold interval;
Within described absolute value drops on described base state threshold interval time, retain described parking stall stateData as described parking stall at the parking stall status data without under car parked state, by described parking stall shapeState data are saved to buffer area corresponding to described parking stall.
7. parking stall according to claim 6 management method, is characterized in that, described exhaustedAfter the step of value and preset base state threshold interval, also comprise:
Outside described absolute value drops on described base state threshold interval time, abandon described parking stall stateData.
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| CN104036658A (en) * | 2014-05-29 | 2014-09-10 | 深圳市泰丰网络设备有限公司 | System and method for guiding parking |
| CN104036555B (en) * | 2014-06-16 | 2016-09-21 | 无锡普智联科高新技术有限公司 | Parking charging method based on earth magnetism platform bistable definite value |
| CN104314336B (en) * | 2014-10-24 | 2016-04-13 | 四川科莱立泊停车设备有限公司 | The vacant detection method in a kind of machinery garage parking stall |
| CN105469629A (en) * | 2015-12-23 | 2016-04-06 | 数源科技股份有限公司 | Method for parking space monitoring with elimination of adjacent position interference |
| CN105448107B (en) * | 2015-12-30 | 2018-03-30 | 中国科学院深圳先进技术研究院 | A kind of method of adjustment and system of earth magnetism threshold model |
| CN105756391B (en) * | 2016-02-19 | 2018-03-20 | 杨海峰 | Lock remote-controlled intelligent with parking space state detecting function |
| CN105590456B (en) * | 2016-03-01 | 2017-12-05 | 深圳先进技术研究院 | A kind of earth magnetism threshold adjustment methods and system |
| CN106530817A (en) * | 2016-12-21 | 2017-03-22 | 迈锐数据（北京）有限公司 | Parking space detection method and device |
| CN106781671A (en) * | 2017-01-06 | 2017-05-31 | 武汉键停科技有限公司 | It is a kind of to be based on two kinds of parking space state detection methods of sensor cross checking |
| CN107679826A (en) * | 2017-09-20 | 2018-02-09 | 广东乐心医疗电子股份有限公司 | Intelligent feeding method and device |
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