CN103258442A - Parking space state sensor and parking space state sensing method - Google Patents
Parking space state sensor and parking space state sensing method Download PDFInfo
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- CN103258442A CN103258442A CN2013101361820A CN201310136182A CN103258442A CN 103258442 A CN103258442 A CN 103258442A CN 2013101361820 A CN2013101361820 A CN 2013101361820A CN 201310136182 A CN201310136182 A CN 201310136182A CN 103258442 A CN103258442 A CN 103258442A
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Abstract
The invention relates to a parking space state sensor and a parking space state sensing method. The parking space state sensor comprises an earth magnetism sensing unit, an infrared detecting unit and a control unit, wherein the earth magnetism sensing unit is used for detecting disturbance information of a parking space earth magnetic field, the infrared detecting unit comprises an infrared emitter and an infrared receiver, and the infrared emitter and the infrared receiver are respectively used for primarily judging whether a vehicle drives in onto a parking space or leaves the parking space and then further judging whether a vehicle exists in the parking space according to a detecting result of the infrared detecting unit. The parking space state sensor detects parking space states through the method of enabling the earth magnetism sensing unit with low power consumption to be in an on-duty state, together with the precise control of the control unit, only when the detecting result is not clear, is the infrared detecting unit with high power consumption and high detecting precision started to make further judgment, and therefore the parking space state sensor realizes the purposes of being low in power consumption and high in detecting precision.
Description
Technical field
The present invention relates to parking stall state sensing technology, particularly a kind of wireless parking stall condition sensor and parking stall state cognitive method.
Background technology
Existing parking stall detector can be divided into wired and wireless two kinds according to its communication mode.
The technology that the parking stall detector of wire communication mode adopts comprises supersonic sounding and video detection method etc., these detection methods all need to adopt the mode of wired power supply and wire communication because the required electric energy that expends is high, but adopt its detection degree of accuracy of detection product of wire communication mode work generally to survey the product height than wireless parking stall, wherein supersonic sounding is most widely used.But the limitation of wired parking stall detector maximum is that its installation workload is big, and labor intensive and material will carry out more construction to the parking lot, such as wiring, set up mounting bracket etc.Because detector energy consumption height is unfavorable for energy-conserving and environment-protective.
And the parking stall detector of the communication of prior art, its detection method adopts single terrestrial magnetic field detection mode mostly, because the energy that this detection mode expends is very little, so this detector can be taked battery powered mode, power without cable power, so also just can take wireless communication mode.Adopt wireless communication means, can significantly reduce the workload when installing and save material cost, the secondary of inside, parking lot is constructed seldom, the energy consumption of equipment itself is also very low.But, the detection principle of this method be by detect vehicle over the ground the disturbance of signal magnetic field judge the existence of vehicle, because the manufactured materials of different vehicle, highly, the carrier frame diversity structure, cause its disturbance situation to the magnetic field of the earth different, vary in size, the disturbance that the chassis central authorities of some vehicle bring the magnetic field of the earth is very little, the chassis of some oversize vehicle is very high, cause the detector detection on ground less than the existence of vehicle, also some vehicle is because a large amount of alumina based material or plastics of adopting, its ferromagnetism is very weak, cause the disturbance of terrestrial magnetic field also very faint, to such an extent as to the detector on ground can't detect the existence of vehicle, these situations all cause taking the parking stall perceptron meeting omission of single terrestrial magnetic field detection mode, and accuracy of detection is low, and error is big.
Summary of the invention
One of purpose of the present invention provides a kind of wireless parking stall condition sensor, improves parking stall status detection precision.
Another goal of the invention of the present invention is to provide a kind of parking stall state cognitive method, guarantees that above-mentioned wireless parking stall condition sensor reaches than high measurement accuracy, and makes this wireless parking stall condition sensor keep than low energy consumption.
This is wireless, and the parking stall condition sensor comprises: an earth magnetism sensing unit, for detection of the disturbance information of terrestrial magnetic field, parking stall; One infrared detection unit, it comprises an infrared transmitter and an infrared remote receiver, is respectively applied to the infrared ray of top, parking stall emission infrared ray and the object reflection of top, reception parking stall; And a control module, whether there is vehicle to sail into or leave on the parking stall, to judge further according to the testing result of this infrared detection unit whether vehicle is arranged on the parking stall again in order to tentatively to judge by the disturbance information of this terrestrial magnetic field.
Further, this control module also is used for optionally starting this infrared detection unit, terrestrial magnetic field data behind the parking stall geomagnetic field disturbance that this control module detects this earth magnetism sensing unit compare with a background terrestrial magnetic field value its rate of change absolute value again with non-zero preset value comparison, if this rate of change absolute value less than this non-zero preset value, then starts this infrared detection unit.
Preferably, this non-zero preset value is the arbitrary value between 5%～10%, and this background terrestrial magnetic field value refers to not have vehicle to be parked under the situation on the parking stall this earth magnetism detecting module and surveys terrestrial magnetic field, the parking stall value that obtains.
Preferably, this parking stall condition sensor also comprises a wireless communication module, in order to this parking stall state-detection result is sent.
This parking stall state cognitive method comprises: step 1, by the disturbance information of an earth magnetism sensing unit with terrestrial magnetic field, state-detection on duty parking stall; Step 2 judges by a control module whether the terrestrial magnetic field, parking stall has the variation of size and/or direction, if, then enter step 3, if not, then return step 1; Step 3, preliminary judgement may have vehicle to sail into or leave, and continues to detect the terrestrial magnetic field data, tends to be steady until it; Step 4 judges that whether rate of change absolute value that these terrestrial magnetic field, parking stall data after tending to be steady compare with background terrestrial magnetic field value is greater than a non-zero predetermined value, if then enter step 8; If not, then enter step 5; Step 5 starts an infrared detection unit, and this infrared detection unit comprises an infrared transmitter and an infrared remote receiver, and wherein this infrared transmitter is to top, parking stall emission infrared ray, and this infrared remote receiver receives the infrared ray of top, parking stall object reflection; Step 6 judges whether this this infrared remote receiver receives the infrared ray of upper vehicle chassis, parking stall reflection, if, then enter step 8, if not, then enter step 7; Step 7 draws testing result: do not have vehicle on the parking stall; And step 8, draw testing result: vehicle is arranged on the parking stall.
Preferably, all further comprise step 9 after this step 7 and the step 8, testing result is sent by a wireless communication module.
Preferably, the preset value of non-zero described in the step 4 is the arbitrary value between 5%～10%.
The mode that parking stall provided by the invention condition sensor adopts the earth magnetism sensing unit to be combined with infrared detection unit, state by two kinds of means perception parking stalls, improved accuracy of detection, the more important thing is, this parking stall condition sensor is in state-detection on duty parking stall state with the lower earth magnetism sensing unit of energy consumption, accurate control in conjunction with control module, only just start the power consumption height under the indefinite situation of testing result but the high further judgement of infrared detection unit do of accuracy of detection, therefore parking stall provided by the invention condition sensor has realized the purpose that energy consumption is low and accuracy of detection is high.
Description of drawings
Fig. 1 is the construction module figure of the parking stall condition sensor that provides of a preferred embodiment of the present invention; And
Fig. 2 is the parking stall state cognitive method process flow diagram that a preferred embodiment of the present invention provides.
Specific embodiment
Below in conjunction with accompanying drawing parking stall provided by the present invention condition sensor is described further, only with a kind of optimized technical scheme technical scheme of the present invention and design concept is described in detail below it is pointed out that.
As shown in Figure 1, the parking stall condition sensor that provides of present embodiment comprises earth magnetism sensing unit 10, infrared detection unit 20, control module 30, wireless communication module 40 and battery 50.Wherein this earth magnetism sensing unit 10 that is to say for detection of the disturbance information of terrestrial magnetic field, parking stall, and whether size and/or direction that this earth magnetism sensing unit 10 can detect terrestrial magnetic field on the parking stall change; This infrared detection unit 20 comprises an infrared transmitter and an infrared remote receiver, this infrared transmitter is used for to top, parking stall emission infrared ray, this infrared remote receiver be used for to receive this infrared transmitter emission and by the infrared ray of this top, parking stall object reflection, whether the infrared ray that receives reflection with this infrared remote receiver serves as to have vehicle to park above judging the parking stall; This control module 30 at first tentatively judges whether have vehicle to sail into or leave on the parking stall by the disturbance information of this terrestrial magnetic field, judges further according to the testing result of this infrared detection unit whether vehicle is arranged on the parking stall again; With the judged result of this control module 30, just the information that whether has vehicle to park on the parking stall sends under the driving of this control module 30 for 40 of this wireless communication modules; Battery 50 then provides power supply for the parking stall condition sensor, and the energy of work just is provided for above-mentioned each unit and module.
Specifically, this control module 30 also is used for optionally starting this infrared detection unit 20.That is to say that the higher infrared detection unit 20 of this energy consumption is not in running order always, and has only the lower earth magnetism sensing unit 10 of energy consumption to be in state on duty.When this earth magnetism sensing unit 10 detects the terrestrial magnetic field, parking stall disturbance information is arranged, the terrestrial magnetic field data that tend to be steady behind the parking stall geomagnetic field disturbance of this control module 30 with these earth magnetism sensing unit 10 detections are compared with background terrestrial magnetic field value and are obtained a rate of change absolute value, then this rate of change absolute value and a non-zero preset value are being compared, if this rate of change absolute value less than this preset value, then starts this infrared detection unit 20.That is to say that when the terrestrial magnetic field, parking stall changes greatly, this rate of change absolute value is during greater than this non-zero preset value, this parking stall condition sensor is that responsible this earth magnetism sensing unit 10 is accurately judged parking stall states, does not need to start the infrared detection unit 20 of high energy consumption; Detect parking stall geomagnetic field disturbance information and work as earth magnetism sensing unit 10, but this rate of change absolute value is during less than this non-zero preset value, earth magnetism sensing unit 10 can not judge accurately whether the top, parking stall has vehicle, just start infrared detection unit 20, judge further by the infrared detection means whether the top, parking stall has vehicle, to improve the accuracy of detection of this parking stall condition sensor.
Wherein, this non-zero preset value can be the arbitrary value between 5%～10%.Certainly this preset value can be decided according to the actual requirements, and when this preset value arranges more greatly, the startup frequency of this infrared detection unit 20 may be more high, and the energy consumption of whole parking stall condition sensor can increase; If this preset value arranges lowlyer, then the startup frequency of this infrared detection unit 20 can be lower, and whole parking stall condition sensor can keep than low energy consumption.Because this parking stall condition sensor adopts battery 50 power supplies, in order to prolong life of product, generally can guarantee under the situation of certain judging nicety rate at earth magnetism sensing unit 10, selects a lower preset value.For example, the earth magnetism sensing unit 10 of employing detects on the parking stall geomagnetic disturbance information greater than 5 percent, judges that then the top, parking stall has the accuracy rate of vehicle can reach 99 percent or other acceptable accuracys rate, and then this preset value can be set to 5 percent.
This parking stall condition sensor can be applicable to the indoor or outdoors parking lot, and it generally is installed on the ground surface of each parking stall, or buries in corresponding ground certain depth place, parking stall, leaves the infrared ray transmitting aperture and is used for to top, parking stall emission infrared light beam.
Introduce the method for this condition sensor perception parking stall, parking stall state below in conjunction with Fig. 2, what wherein Fig. 2 expressed is a flow process carrying out parking stall state cognitive method in this parking stall condition sensor course of work, and this parking stall condition sensor is constantly to carry out this flow process shown in Figure 2 circularly.This parking stall state cognitive method comprises:
Step 1 is by the disturbance information of an earth magnetism sensing unit with terrestrial magnetic field, state-detection on duty parking stall; Because earth magnetism sensing unit consumed power is less, have only tens usually to the hundreds of microampere, so with it as preliminary judging means, continue to monitor the terrestrial magnetic field value that current parking stall is located by control module control earth magnetism sensing unit.
Certainly, parked vehicle on the parking stall after, this parking stall condition sensor is still with state-detection on duty parking stall state, the flow process of its execution also as described in Figure 2 flow process is the same.When vehicle sails out of, vehicle launch, when beginning to move back and forth, the terrestrial magnetic field data have disturbance, then, along with car leaves, disturbance tends to be steady, and this moment, the terrestrial magnetic field data necessarily were worth near the background terrestrial magnetic field, and just the rate of change of terrestrial magnetic field data is necessarily less than 10, execution in step 5, step 6 and step 7 draw the result who does not have vehicle on the parking stall successively.If run into car owner's Iterim Change idea, when returning the parking stall again behind the vehicle launch, the terrestrial magnetic field data have disturbance, then, along with car comes to a complete stop, disturbance tends to be steady, and this moment, terrestrial magnetic field data and background terrestrial magnetic field value compared, execution in step 4 and corresponding subsequent step can draw the result that vehicle is arranged on the parking stall then.If after being parked in car on the parking stall originally and driving away, followed by other car of coming in again, cause the lasting disturbance of terrestrial magnetic field, but along with disturbance tends to be steady, this moment, terrestrial magnetic field data and background terrestrial magnetic field value compared, execution in step 4 and corresponding subsequent step still can accurately draw the result that vehicle is arranged on the parking stall then.
Because the present invention adopts earth magnetism to detect and two kinds of compound detection modes of means of infrared detection, avoid single earth magnetism detection means because of the difference of vehicle material, framed structure, and the error in judgement that causes of the factors such as drift in magnetic field of the earth, and single infrared detection means can not take battery powered working method because power consumption is high, thereby can not use the defective of communication.With two kinds of detection modes that detection means is compound, reach the accuracy that both improves detection, the purpose that cuts down the consumption of energy again.
The more important thing is, parking stall provided by the invention condition sensor with power consumption lower and accuracy in detection also low earth magnetism detecting unit with mode continuous firing on duty, only under the situation that the earth magnetism detecting unit can't correctly be judged, just start detection precision height but energy consumption also high infrared detection unit carry out compound judgement, thereby under the guaranteed situation of accuracy in detection, reduce the number of starts of infrared detection unit, further reduce power consumption.Therefore, parking stall of the present invention condition sensor works in the super low-power consumption state, can adopt the powered battery mode, reaches the purpose of energy-conserving and environment-protective.
In addition, parking stall provided by the invention condition sensor adopts wireless communication means, and it is quick, convenient to make product install, and saves mounting material, at utmost keeps the neat and artistic of parking lot environment.
Only be preferred implementation of the present invention below, should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim institute restricted portion.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. parking stall condition sensor comprises:
One earth magnetism sensing unit is for detection of the disturbance information of terrestrial magnetic field, parking stall;
One infrared detection unit, it comprises an infrared transmitter and an infrared remote receiver, is respectively applied to the infrared ray of top, parking stall emission infrared ray and the object reflection of top, reception parking stall; And
Whether one control module has vehicle to sail into or leave, to judge further according to the testing result of this infrared detection unit whether vehicle is arranged on the parking stall again in order to tentatively to judge according to the disturbance information of this terrestrial magnetic field on the parking stall.
2. parking stall as claimed in claim 1 condition sensor, it is characterized in that, this control module also is used for optionally starting this infrared detection unit, terrestrial magnetic field data behind the parking stall geomagnetic field disturbance that this control module detects this earth magnetism sensing unit are compared the comparison of its rate of change absolute value and a non-zero preset value with a background terrestrial magnetic field value, if this rate of change absolute value less than this non-zero preset value, then starts this infrared detection unit.
3. parking stall as claimed in claim 2 condition sensor, it is characterized in that, this non-zero preset value is the arbitrary value between 5%～10%, and this background terrestrial magnetic field value refers to not have vehicle to be parked under the situation on the parking stall this earth magnetism detecting module and surveys terrestrial magnetic field, the parking stall value that obtains.
4. parking stall as claimed in claim 1 condition sensor is characterized in that this parking stall condition sensor also comprises a wireless communication module, in order to this parking stall state-detection result is sent.
5. parking stall state cognitive method, it comprises:
Step 1 is by the disturbance information of an earth magnetism sensing unit with terrestrial magnetic field, state-detection on duty parking stall;
Step 2 judges by a control module whether the terrestrial magnetic field, parking stall has the variation of size and/or direction, if, then enter step 3, if not, then return step 1;
Step 3, preliminary judgement may have vehicle to sail into or leave, and continues to detect the terrestrial magnetic field data, tends to be steady until it;
Step 4 judges that these terrestrial magnetic field, parking stall data after tending to be steady compare its rate of change absolute value whether greater than a non-zero predetermined value, if then enter step 8 with background terrestrial magnetic field value; If not, then enter step 5;
Step 5 starts an infrared detection unit, and this infrared detection unit comprises an infrared transmitter and an infrared remote receiver, and wherein this infrared transmitter is to top, parking stall emission infrared ray, and this infrared remote receiver receives the infrared ray of top, parking stall object reflection;
Step 6 judges whether this this infrared remote receiver receives the infrared ray of upper vehicle chassis, parking stall reflection, if, then enter step 8, if not, then enter step 7;
Step 7 draws testing result: do not have vehicle on the parking stall; And
Step 8 draws testing result: vehicle is arranged on the parking stall.
6. parking stall as claimed in claim 5 state cognitive method is characterized in that, all further comprises after this step 7 and the step 8:
Step 9 sends testing result by a wireless communication module.
7. parking stall as claimed in claim 5 state cognitive method is characterized in that the preset value of non-zero described in the step 4 is the arbitrary value between 5%～10%.
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104658267A (en) * | 2013-11-15 | 2015-05-27 | 国民技术股份有限公司 | Vehicle state detection method and vehicle state detection device |
| CN105006170A (en) * | 2015-07-06 | 2015-10-28 | 中国船舶重工集团公司第七一〇研究所 | Parking stall detection system and method based on doppler radar and terrestrial magnetism detection |
| CN105118303A (en) * | 2015-07-17 | 2015-12-02 | 袁丽 | Intelligent parking monitoring and management system and vehicle in-position detection method under parking mode |
| CN105303872A (en) * | 2015-08-28 | 2016-02-03 | 芜湖科创生产力促进中心有限责任公司 | Parking charging system |
| CN105321351A (en) * | 2015-11-03 | 2016-02-10 | 徐承柬 | Parking space arrearage management method and system |
| CN105427593A (en) * | 2015-11-03 | 2016-03-23 | 徐承柬 | Parking stall management method and system |
| CN106504581A (en) * | 2017-01-03 | 2017-03-15 | 安徽嘉盛位联网络科技有限公司 | A kind of Vehicle berth vehicle checker and detection method |
| CN106504582A (en) * | 2017-01-03 | 2017-03-15 | 安徽嘉盛位联网络科技有限公司 | A kind of trackside berth vehicle checker |
| CN106530819A (en) * | 2017-01-03 | 2017-03-22 | 安徽嘉盛位联网络科技有限公司 | Vehicle detection device and detection method |
| CN106781534A (en) * | 2017-01-03 | 2017-05-31 | 安徽嘉盛位联网络科技有限公司 | A kind of berth vehicle checker and detection method |
| CN106781664A (en) * | 2016-12-27 | 2017-05-31 | 成都天铂数字技术有限公司 | Method for detecting parking stalls and device |
| CN107730995A (en) * | 2017-11-21 | 2018-02-23 | 微传智能科技（常州）有限公司 | It is a kind of to combine parking space detection method and the system that data judge |
| CN108281011A (en) * | 2018-01-25 | 2018-07-13 | 小牛（深圳）科技贸易有限公司 | A kind of vehicle in-place detection system and method |
| CN108352114A (en) * | 2015-10-27 | 2018-07-31 | 市政停车服务公司 | Parking space detection method and system |
| CN110047321A (en) * | 2019-04-25 | 2019-07-23 | 武汉科技大学 | A kind of parking position management method and system based on Car license recognition |
| CN110379179A (en) * | 2019-07-31 | 2019-10-25 | 四川长虹电器股份有限公司 | Improve the system and method for earth magnetism vehicle checker Detection accuracy under complex environment |
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| CN111696380A (en) * | 2020-05-20 | 2020-09-22 | 深圳市中智车联科技有限责任公司 | Method for detecting parking spaces by double barrels |
| CN113034929A (en) * | 2020-10-29 | 2021-06-25 | 微传智能科技（常州）有限公司 | Parking space state detection method and system |
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| CN104658267A (en) * | 2013-11-15 | 2015-05-27 | 国民技术股份有限公司 | Vehicle state detection method and vehicle state detection device |
| CN105006170A (en) * | 2015-07-06 | 2015-10-28 | 中国船舶重工集团公司第七一〇研究所 | Parking stall detection system and method based on doppler radar and terrestrial magnetism detection |
| CN105006170B (en) * | 2015-07-06 | 2017-05-03 | 中国船舶重工集团公司第七一〇研究所 | Parking stall detection system and method based on doppler radar and terrestrial magnetism detection |
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| CN105118303A (en) * | 2015-07-17 | 2015-12-02 | 袁丽 | Intelligent parking monitoring and management system and vehicle in-position detection method under parking mode |
| CN105118303B (en) * | 2015-07-17 | 2018-03-27 | 袁丽 | Vehicle enters position detecting method under intelligent parking monitoring management system and car-parking model |
| CN105303872A (en) * | 2015-08-28 | 2016-02-03 | 芜湖科创生产力促进中心有限责任公司 | Parking charging system |
| US11164452B2 (en) | 2015-10-27 | 2021-11-02 | Municipal Parking Services, Inc. | Parking space detection method and system |
| CN108352114A (en) * | 2015-10-27 | 2018-07-31 | 市政停车服务公司 | Parking space detection method and system |
| CN105427593A (en) * | 2015-11-03 | 2016-03-23 | 徐承柬 | Parking stall management method and system |
| CN105321351A (en) * | 2015-11-03 | 2016-02-10 | 徐承柬 | Parking space arrearage management method and system |
| CN106781664B (en) * | 2016-12-27 | 2019-08-06 | 成都天铂数字技术有限公司 | Method for detecting parking stalls and device |
| CN106781664A (en) * | 2016-12-27 | 2017-05-31 | 成都天铂数字技术有限公司 | Method for detecting parking stalls and device |
| CN106504581A (en) * | 2017-01-03 | 2017-03-15 | 安徽嘉盛位联网络科技有限公司 | A kind of Vehicle berth vehicle checker and detection method |
| CN106504582A (en) * | 2017-01-03 | 2017-03-15 | 安徽嘉盛位联网络科技有限公司 | A kind of trackside berth vehicle checker |
| CN106781534A (en) * | 2017-01-03 | 2017-05-31 | 安徽嘉盛位联网络科技有限公司 | A kind of berth vehicle checker and detection method |
| CN106530819A (en) * | 2017-01-03 | 2017-03-22 | 安徽嘉盛位联网络科技有限公司 | Vehicle detection device and detection method |
| CN107730995A (en) * | 2017-11-21 | 2018-02-23 | 微传智能科技（常州）有限公司 | It is a kind of to combine parking space detection method and the system that data judge |
| CN108281011A (en) * | 2018-01-25 | 2018-07-13 | 小牛（深圳）科技贸易有限公司 | A kind of vehicle in-place detection system and method |
| CN110047321A (en) * | 2019-04-25 | 2019-07-23 | 武汉科技大学 | A kind of parking position management method and system based on Car license recognition |
| CN110379179A (en) * | 2019-07-31 | 2019-10-25 | 四川长虹电器股份有限公司 | Improve the system and method for earth magnetism vehicle checker Detection accuracy under complex environment |
| CN111524364A (en) * | 2020-04-29 | 2020-08-11 | 武汉拓宝科技股份有限公司 | Parking space state detection method and system |
| CN111524364B (en) * | 2020-04-29 | 2021-06-25 | 武汉拓宝科技股份有限公司 | Parking space state detection method and system |
| CN111696380A (en) * | 2020-05-20 | 2020-09-22 | 深圳市中智车联科技有限责任公司 | Method for detecting parking spaces by double barrels |
| CN113034929A (en) * | 2020-10-29 | 2021-06-25 | 微传智能科技（常州）有限公司 | Parking space state detection method and system |
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