CN106781659A - A kind of parking space state a reference value scaling method and device - Google Patents
A kind of parking space state a reference value scaling method and device Download PDFInfo
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- CN106781659A CN106781659A CN201611189519.4A CN201611189519A CN106781659A CN 106781659 A CN106781659 A CN 106781659A CN 201611189519 A CN201611189519 A CN 201611189519A CN 106781659 A CN106781659 A CN 106781659A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
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- G—PHYSICS
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- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/048—Detecting movement of traffic to be counted or controlled with provision for compensation of environmental or other condition, e.g. snow, vehicle stopped at detector
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Abstract
The invention provides a kind of parking space state a reference value scaling method and device, wherein, the method includes：When parking stall is in having car state or without car state, it is determined that the parking space state reference data under current parking space state；According to the parking space state reference data, the adjusted value that the parking space state under the current parking space state judges distance is calculated；By the adjusted value to current parking space state under the parking space state judge distance demarcate.By parking space state a reference value scaling method provided in an embodiment of the present invention and device, the accuracy rate of parking space state detection can be improved.
Description
Technical field
The present invention relates to technical field of data processing, in particular to a kind of parking space state a reference value scaling method and
Device.
Background technology
At present, with the popularization of motor vehicle, parking lot is also more and more, and existing parking lot is managed to parking stall
When, the state of parking stall can be carried out using the stall testing apparatus with geomagnetism detecting device, distance measuring sensor or microstrip antenna
Detection.
In correlation technique, during stall testing apparatus detection parking space state, can be by geomagnetism detecting device, range finding sensing
Default judgement parking space state data are compared the data that device or microstrip antenna are collected with stall testing apparatus, it is determined that
The seizure condition of parking stall.
In process of the present invention is realized, inventor has found that at least there are the following problems in correlation technique：
The humiture change of parking stall environment can make actual judgement parking space state data change, if using default judgement
Parking space state data determine the seizure condition of parking stall, and stall testing apparatus can be caused to judge parking space state by accident, reduce parking stall shape
The accuracy rate of state detection.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of parking space state a reference value scaling method and device,
To improve the accuracy rate of parking space state detection.
In a first aspect, a kind of parking space state a reference value scaling method is the embodiment of the invention provides, including：
When parking stall is in having car state or without car state, it is determined that the parking space state reference data under current parking space state；
According to the parking space state reference data, the tune that the parking space state under the current parking space state judges distance is calculated
Whole value；
By the adjusted value to current parking space state under the parking space state judge distance demarcate.
With reference in a first aspect, the embodiment of the invention provides the first possible implementation method of first aspect, wherein：Really
Parking space state reference data under settled preceding parking space state, including：
When failing to get the parking space state reference data under current parking space state, multigroup microstrip antenna number of echoes is obtained
According to；
Calculate the average value of each group microstrip antenna echo data in multigroup microstrip antenna echo data；
By the average value of microstrip antenna echo data described in each group that is calculated, it is determined that the institute under current parking space state
State parking space state reference data.
With reference in a first aspect, the embodiment of the invention provides second possible implementation method of first aspect, wherein：It is logical
Cross the parking space state that the average value of microstrip antenna echo data described in each group being calculated is determined under current parking space state
Reference data, including：
Remove the most value in the average value of microstrip antenna echo data described in each group；
The mean data of the average value of microstrip antenna echo data described in each group after most value, and the institute that will be obtained are removed in calculating
Mean data is stated as the parking space state reference data under current parking space state.
With reference in a first aspect, the embodiment of the invention provides the third possible implementation method of first aspect, wherein：Root
According to the parking space state reference data, the adjusted value that the parking space state under the current parking space state judges distance is calculated, including：
Obtain multiple microstrip antenna data；
Calculate multiple microstrip antenna data respectively with the mahalanobis distance of the parking space state reference data, obtain multiple
Mahalanobis distance result of calculation；
According to multiple mahalanobis distance result of calculations, the parking space state calculated under the current parking space state judges distance
Adjusted value.
With reference in a first aspect, the embodiment of the invention provides the 4th kind of possible implementation method of first aspect, wherein：Root
According to multiple mahalanobis distance result of calculations, the adjusted value that the parking space state under current parking space state judges distance is calculated, including：
Remove the most value in multiple mahalanobis distance result of calculations；
Calculating removes the mahalanobis distance average of the multiple described mahalanobis distance result of calculation after most value, and will be calculated
The mahalanobis distance average judges the adjusted value of distance as the parking space state under current parking space state.
Second aspect, the embodiment of the invention provides a kind of parking space state a reference value caliberating device, including：
Determining module, for when parking stall is in having car state or without car state, it is determined that the parking stall under current parking space state
State reference data；
Adjustment calculation module, for according to the parking space state reference data, calculating under the current parking space state
Parking space state judges the adjusted value of distance；
Demarcating module, for by the adjusted value to current parking space state under the parking space state judge distance carry out
Demarcate.
With reference to second aspect, the first possible implementation method of second aspect is the embodiment of the invention provides, wherein：Institute
Determining module is stated, including：
Acquiring unit, for when failing to get the parking space state reference data under current parking space state, obtaining multigroup
Microstrip antenna echo data；
Average calculation unit, for calculating each group microstrip antenna echo data in multigroup microstrip antenna echo data
Average value；
Reference data determining unit, for the average value of microstrip antenna echo data described in each group by being calculated,
It is determined that the parking space state reference data under current parking space state.
With reference to second aspect, second possible implementation method of second aspect is the embodiment of the invention provides, wherein：Institute
Reference data determining unit is stated, including：
Treatment subelement, for removing the most value in the average value of microstrip antenna echo data described in each group；
Computation subunit, the average number of the average value of microstrip antenna echo data described in each group after most value is removed for calculating
According to, and the mean data that will be obtained is used as the parking space state reference data under current parking space state.
With reference to second aspect, the third possible implementation method of second aspect is the embodiment of the invention provides, wherein：Institute
Adjustment calculation module is stated, including：
Microstrip antenna data capture unit, for obtaining multiple microstrip antenna data；
Mahalanobis distance computing unit, for calculate multiple microstrip antenna data respectively with the parking space state base value
According to mahalanobis distance, obtain multiple mahalanobis distance result of calculations；
Adjustment calculation unit, for according to multiple mahalanobis distance result of calculations, calculating the current parking space state
Under parking space state judge distance adjusted value.
With reference to second aspect, the 4th kind of possible implementation method of second aspect is the embodiment of the invention provides, wherein：Institute
Adjustment calculation unit is stated, including：
Most value treatment subelement, for removing the most value in multiple mahalanobis distance result of calculations；
Adjustment calculation subelement, for calculate remove the geneva of the multiple described mahalanobis distance result of calculation after most value away from
From average, and the mahalanobis distance average that will be calculated judges the tune of distance as the parking space state under current parking space state
Whole value.
Parking space state a reference value scaling method provided in an embodiment of the present invention and device, have car shape by obtaining parking stall and being in
Parking space state reference data under state or without car state, obtains the adjustment that the parking space state under current parking space state judges distance
Value, and judge that distance is demarcated to parking space state according to adjusted value, and can only judge parking stall shape by default in the prior art
State data carry out judgement and compare to parking space state, even if parking stall environment causes actual judgement parking space state data to change,
Can judge that distance is judged parking space state by the parking space state of real-time calibration, avoid as far as possible because parking space state is sentenced
Parking space state erroneous judgement caused by the error that set a distance occurs, improves the accuracy rate of parking space state detection；Meanwhile, using adjusted value
Also it is avoided that by the influence that the electric property difference of microstrip antenna in each detector is brought, so as to further improve parking stall
The accuracy rate of state-detection.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows a kind of flow chart of parking space state a reference value scaling method that the embodiment of the present invention 1 is provided；
Fig. 2 shown in the parking space state a reference value scaling method that the embodiment of the present invention 1 is provided, described parking stall shape
The specific method flow chart of state a reference value scaling method；
Fig. 3 shows a kind of structural representation of parking space state a reference value caliberating device that the embodiment of the present invention 2 is provided；
Fig. 4 shown in the parking space state a reference value caliberating device that the embodiment of the present invention 2 is provided, determining module it is specific
Structural representation.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
Middle accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
It is a part of embodiment of the invention, rather than whole embodiments.The present invention generally described and illustrated in accompanying drawing herein is real
The component for applying example can be arranged and designed with a variety of configurations.Therefore, it is of the invention to what is provided in the accompanying drawings below
The detailed description of embodiment is not intended to limit the scope of claimed invention, but is merely representative of selected reality of the invention
Apply example.Based on embodiments of the invention, the institute that those skilled in the art are obtained on the premise of creative work is not made
There is other embodiment, belong to the scope of protection of the invention.
At present, stall testing apparatus detection parking space state during, can by geomagnetism detecting device, distance measuring sensor or
Default judgement parking space state data are compared the data that microstrip antenna is collected with stall testing apparatus, determine parking stall
Seizure condition.And the humiture change of parking stall environment can make actual judgement parking space state data change, if using default
Judge that parking space state data determine the seizure condition of parking stall, stall testing apparatus can be caused to judge parking space state by accident, reduce car
The accuracy rate of position state-detection.Based on this, the application provide a kind of parking space state a reference value scaling method and device.
Embodiment one
The present embodiment provides a kind of parking space state a reference value scaling method, and the executive agent of the method is parking stall measure dress
Put.The stall testing apparatus are sentenced when parking stall is in having car state or without car state to the parking space state under current parking space state
Set a distance is demarcated.
Above-mentioned stall testing apparatus, can be set using existing any calculating containing microcontroller or microprocessor
It is standby, distance is demarcated to be judged to the parking space state under current parking space state.
Provided in an embodiment of the present invention a kind of parking space state a reference value scaling method flow chart shown in Figure 1, the party
Method describes to judge the parking space state under current parking space state the process that distance is demarcated.The method includes walking in detail below
Suddenly：
Step 100, when parking stall is in having car state or without car state, it is determined that the parking space state base under current parking space state
Quasi- data.
In above-mentioned steps 100, above-mentioned having car state refers to that current parking stall is in the state taken by vehicle；It is above-mentioned without car
State refers to that preceding parking stall is in the state not taken by vehicle.
Before above-mentioned steps 100, the parking space state a reference value scaling method that the present embodiment is proposed also is included to parking stall
In having car state or the determination process of without car state, the determination process includes step (1) to (2) in detail below：
(1) echo data got according to the microstrip antenna for being arranged on parking stall, calculates vehicle and micro-strip in current parking stall
The distance of antenna；
(2) parking stall under current having car state or without car state is met when the distance of vehicle in current parking stall and microstrip antenna
State judge apart from when, determine that above-mentioned parking stall is to be in without car state in having car state.
In above-mentioned steps (1), stall testing apparatus can use existing any echo data according to microstrip antenna
Calculate object to calculate vehicle in parking stall with the distance of microstrip antenna with the method for microstrip antenna distance, here no longer one by one
Repeat.
Certainly, in the present embodiment, can also be determined using modes such as existing geomagnetic sensor or range sensors
Above-mentioned parking stall state in which, repeats no more here.
Above-mentioned microstrip antenna, may be mounted at parking stall top, it is also possible to parking stall is embedded in below ground, for obtaining parking stall
The echo data of surrounding.
Above-mentioned parking space state reference data, refers to that microwave antenna is received under parking stall is in having car state or without car state
Echo data a reference value, the adjusted value of distance is judged for calculating the parking space state under current parking space state.
Above-mentioned parking space state reference data can be the preset data in stall testing apparatus, but in order to calculate parking stall shape
The error that default value is caused to result of calculation is reduced during state reference data, can also be not provided with stall testing apparatus
Parking space state reference data, then the now parking space state reference data under the current parking space state of above-mentioned determination, including following tool
Body step (1) is to step (3)：
(1) when failing to get the parking space state reference data under current parking space state, obtain multigroup microstrip antenna and return
Wave number evidence；
(2) average value of each group microstrip antenna echo data in above-mentioned multigroup microstrip antenna echo data is calculated；
(3) average value of the above-mentioned microstrip antenna echo data of each group by being calculated, it is determined that under current parking space state
Above-mentioned parking space state reference data.
By the description of above-mentioned steps (1) to step (3), by the average value pair for calculating each group microstrip antenna echo data
Above-mentioned parking space state reference data under current parking space state is calculated, and can calculate the process of parking space state reference data
It is middle to reduce the error that default value is caused to result of calculation, improve and distance calibration is judged to current parking space state parking space state
Accuracy rate.
In order to further reduce the error of parking space state reference data, above-mentioned steps (3) can perform step in detail below
(31) to step (32)：
(31) the most value in the average value of the above-mentioned microstrip antenna echo data of each group is removed；
(32) mean data for removing the average value of the above-mentioned microstrip antenna echo data of each group after most value is calculated, and will be obtained
Above-mentioned mean data as the parking space state reference data under current parking space state.
In one embodiment, stall testing apparatus are in order to remove the average value of the above-mentioned microstrip antenna echo data of each group
In most value, above-mentioned steps (31) specifically include following steps (311) to step (313)：
(311) size of the average value according to the above-mentioned microstrip antenna echo data of each group, returns to the above-mentioned microstrip antenna of each group
The average value sequence of wave number evidence, obtains ranking results；
(312) according to the ranking results for obtaining, the maximum in the average value of the above-mentioned microstrip antenna echo data of each group is determined
Value and minimum value；
(313) maximum and minimum value in above-mentioned average value are removed.
During above-mentioned steps (311) to step (313) is a kind of average value for removing above-mentioned microstrip antenna echo data
The implementation being most worth, stall testing apparatus remove micro-strip day except the process described to step (313) by above-mentioned rapid (311)
Beyond most value in the average value of line echo data, can also be gone by the method being most worth in existing other determinations multiple numerical value
Fall the most value in the average value of microstrip antenna echo data, no longer repeat one by one here.
By the description of above-mentioned steps (31) to step (32), the above-mentioned each group microstrip antenna echo after removing most value
The average value of data to current parking space state under above-mentioned parking space state reference data calculate, can further reduce calculating
The error of result, improves the accuracy rate that parking space state judges.
After the parking space state reference data under determining current parking space state by above-mentioned steps 100, can continue into
Row following steps 102 judge that the adjusted value of distance is calculated to parking space state.
Step 102, according to above-mentioned parking space state reference data, the parking space state calculated under above-mentioned current parking space state judges
The adjusted value of distance.
Wherein, above-mentioned parking space state judges distance, is preset in stall testing apparatus, respectively including having car state judge away from
With a distance from judging with without car state；Having car state judges that distance and without car state judge distance, and it is to be in be respectively used to parking stall
Having car state is in without car state and is judged.
Above-mentioned parking space state judges the adjusted value of distance, can be on the occasion of can also be negative value.
Step 104, by above-mentioned adjusted value to current parking space state under above-mentioned parking space state judge distance demarcate.
In above-mentioned steps 104, calculate the above-mentioned parking space state under adjusted value and current parking space state judge distance and,
The result of calculation that will be obtained judges distance as calibrated parking space state.
In sum, the parking space state a reference value scaling method that the present embodiment is provided, has car shape by obtaining parking stall and being in
Parking space state reference data under state or without car state, obtains the adjustment that the parking space state under current parking space state judges distance
Value, and judge that distance is demarcated to parking space state according to adjusted value, and can only judge parking stall shape by default in the prior art
State data carry out judgement and compare to parking space state, even if parking stall environment causes actual judgement parking space state data to change,
Can judge that distance is judged parking space state by the parking space state of real-time calibration, avoid as far as possible because parking space state is sentenced
Parking space state erroneous judgement caused by the error that set a distance occurs, improves the accuracy rate of parking space state detection；Meanwhile, using adjusted value
Also it is avoided that by the influence that the electric property difference of microstrip antenna in each detector is brought, so as to further improve parking stall
The accuracy rate of state-detection.
In correlation technique, although stall testing apparatus can be by the microstrip antenna echo data or geomagnetic data that get
To determine parking space state, but distance is entered can not be judged to parking space state by with apart from unrelated microstrip antenna echo data
Rower is determined, and can only gather range data by the device of additionally mounted other measurement distances and judge that distance enters rower to parking space state
Fixed, operation is cumbersome and increased use cost.The proving operation of distance, above-mentioned basis are judged parking space state to simplify
Above-mentioned parking space state reference data, the adjusted value of the parking space state judgement distance under the above-mentioned current parking space state of calculating, including with
Lower specific steps (1) are to step (3)：
(1) multiple microstrip antenna data are obtained；
(2) calculate multiple above-mentioned microstrip antenna data respectively with the mahalanobis distance of above-mentioned parking space state reference data, obtain
Multiple mahalanobis distance result of calculations；
(3) according to multiple above-mentioned mahalanobis distance result of calculations, the parking space state calculated under above-mentioned current parking space state judges
The adjusted value of distance.
In above-mentioned steps (1), above-mentioned microstrip antenna data are exactly the echo data of above-mentioned microstrip antenna.
In above-mentioned steps (2), by below equation calculate multiple above-mentioned microstrip antenna data respectively with above-mentioned parking stall shape
The mahalanobis distance d of state reference datam(x,y)：
Wherein, x represents parking space state reference data, and y represents microstrip antenna data, Σ-1Represent covariance matrix.
In one embodiment, in order to be further ensured that demarcate after parking space state judge distance accuracy, improve car
The accuracy rate of position condition adjudgement, above-mentioned steps (3) can be including step (31) in detail below to step (32)：
(31) the most value in multiple above-mentioned mahalanobis distance result of calculations is removed；
(32) the mahalanobis distance average for removing the multiple above-mentioned mahalanobis distance result of calculation after most value is calculated, and will be calculated
The above-mentioned mahalanobis distance average for arriving judges the adjusted value of distance as the parking space state under current parking space state.
Wherein, the process being most worth that above-mentioned steps (31) are removed in multiple above-mentioned mahalanobis distance result of calculations is removed with above-mentioned
The process being most worth in the average value of the above-mentioned microstrip antenna echo data of each group is similar to, and repeats no more here.
The step of by the above (31), is to step (32) as can be seen that the parking space state in the case where current parking space state is calculated is sentenced
During the adjusted value of set a distance, first remove the most value in mahalanobis distance result of calculation, and calculate multiple mahalanobis distances calculating
The average of result is used as adjusted value, so as to judge that distance is demarcated to the parking space state under current parking space state by adjusted value
Afterwards, it is ensured that parking space state judges the accuracy that distance is judged parking space state after demarcation, further increases parking space state and sentences
Disconnected accuracy rate.
In sum, calculated by the mahalanobis distance to multiple microstrip antenna data and parking space state reference data,
Obtain the adjusted value that parking space state under current parking space state judges distance, thus by pair with apart from unrelated microstrip antenna number
According to carrying out simple computation, it is possible to the adjusted value that parking space state judges distance is obtained, without additionally mounted other measurement distances
Device gathers range data to judge that distance is demarcated to parking space state, simple to operate and reduce use cost.
Referring to Fig. 2, further is made to the parking space state a reference value scaling method proposed in the present embodiment by the example below
Description.
Step 200, the parking space state reference data judged whether under current parking space state, if it is perform step
212, if otherwise performing step 202；
Step 202, multigroup echo data is gathered by microstrip antenna；
Step 204, judge whether to acquire the echo data of predetermined number group, if it is perform step 206, if not
Then return to step 202；
The echo data average of the predetermined number group that step 206, calculating are collected simultaneously is stored；
Each group echo data average in step 208, the echo data for judging whether ask for predetermined number group, if it is
If performing step 210, otherwise performing step 202；
Step 210, the most value for removing each group echo data average, and calculate and remove equal equal of each group echo data after most value
Value Data is used as the parking space state reference data under current parking space state；
Step 212, the multiple echo datas obtained under current state, with the parking space state base value under current parking space state
According to mahalanobis distance calculating is carried out, multiple mahalanobis distance result of calculations are obtained；
Step 214, judge whether to obtain the mahalanobis distance result of calculation of predetermined number, if it is perform step 216, such as
Fruit otherwise performs step 212；
The multiple mahalanobis distances after most value are removed in step 216, the most value removed in multiple mahalanobis distance result of calculations, calculating
The average of result of calculation, and the average that will be calculated is used as adjusted value corresponding with each microwave detector.
Description more than can be seen that the parking space state a reference value scaling method that the present embodiment is provided, by obtaining
Parking stall is in the parking space state reference data under having car state or without car state, and the parking space state obtained under current parking space state is sentenced
The adjusted value of set a distance, and distance is demarcated to be judged to parking space state according to adjusted value, can only be by pre- with the prior art
If judging that parking space state data carry out judgement and compare to parking space state, even if parking stall environment causes actual judgement parking space state data
Change, also can judge that distance is judged parking space state by the parking space state of real-time calibration, avoid as far as possible by
The parking space state erroneous judgement caused by parking space state judges the error that distance occurs, improves the accuracy rate of parking space state detection；Together
When, also it is avoided that using adjusted value by the influence that the electric property difference of microstrip antenna in each detector is brought, so that
Further improve the accuracy rate of parking space state detection.
Embodiment two
Referring to a kind of parking space state a reference value caliberating device that Fig. 3 is provided for the present embodiment, for performing above-mentioned parking stall
State a reference value scaling method, including：
Determining module 300, for when parking stall is in having car state or without car state, it is determined that the car under current parking space state
Position state reference data；
Adjustment calculation module 302, for according to above-mentioned parking space state reference data, calculating under above-mentioned current parking space state
Parking space state judge distance adjusted value；
Demarcating module 304, for by above-mentioned adjusted value to current parking space state under above-mentioned parking space state judge distance
Demarcated.
In sum, the parking space state a reference value caliberating device that the present embodiment is provided, has car shape by obtaining parking stall and being in
Parking space state reference data under state or without car state, obtains the adjustment that the parking space state under current parking space state judges distance
Value, and judge that distance is demarcated to parking space state according to adjusted value, and can only judge parking stall shape by default in the prior art
State data carry out judgement and compare to parking space state, even if parking stall environment causes actual judgement parking space state data to change,
Can judge that distance is judged parking space state by the parking space state of real-time calibration, avoid as far as possible because parking space state is sentenced
Parking space state erroneous judgement caused by the error that set a distance occurs, improves the accuracy rate of parking space state detection；Meanwhile, using adjusted value
Also it is avoided that by the influence that the electric property difference of microstrip antenna in each detector is brought, so as to further improve parking stall
The accuracy rate of state-detection.
Above-mentioned parking space state reference data can be the preset data in stall testing apparatus, but in order to calculate parking stall shape
The error that default value is caused to result of calculation is reduced during state reference data, can also be not provided with stall testing apparatus
Parking space state reference data, then referring to Fig. 4, now above-mentioned determining module 300, including：
Acquiring unit 3000, for when failing to get the parking space state reference data under current parking space state, obtaining
Multigroup microstrip antenna echo data；
Average calculation unit 3002, for calculating each group microstrip antenna echo in above-mentioned multigroup microstrip antenna echo data
The average value of data；
Reference data determining unit 3004, for the average of the above-mentioned microstrip antenna echo data of each group by being calculated
Value, it is determined that the above-mentioned parking space state reference data under current parking space state.
In sum, by calculating the average value of each group microstrip antenna echo data to current parking space state under above-mentioned car
Position state reference data is calculated, and default value can be reduced during parking space state reference data is calculated and is tied to calculating
The error that fruit is caused, improves the accuracy rate for judging current parking space state parking space state distance calibration.
In order to further reduce the error of parking space state reference data, said reference data determination unit 3004, including：
Treatment subelement, for the most value in the average value for removing the above-mentioned microstrip antenna echo data of each group；
Computation subunit, the average number of the average value of the above-mentioned microstrip antenna echo data of each group after most value is removed for calculating
According to, and the above-mentioned mean data that will be obtained is used as the parking space state reference data under current parking space state.
In sum, the average value of the above-mentioned each group microstrip antenna echo data after removing most value is to current parking stall shape
Above-mentioned parking space state reference data under state is calculated, and can further reduce the error of result of calculation, improves parking space state
The accuracy rate of judgement.
In correlation technique, although stall testing apparatus can be by the microstrip antenna echo data or geomagnetic data that get
To determine parking space state, but distance is entered can not be judged to parking space state by with apart from unrelated microstrip antenna echo data
Rower is determined, and can only gather range data by the device of additionally mounted other measurement distances and judge that distance enters rower to parking space state
Fixed, operation is cumbersome and increased use cost.The proving operation of distance, above-mentioned adjustment are judged parking space state to simplify
Value computing module 302, including：
Microstrip antenna data capture unit, for obtaining multiple microstrip antenna data；
Mahalanobis distance computing unit, for calculate multiple above-mentioned microstrip antenna data respectively with above-mentioned parking space state base value
According to mahalanobis distance, obtain multiple mahalanobis distance result of calculations；
Adjustment calculation unit, for according to multiple above-mentioned mahalanobis distance result of calculations, calculating above-mentioned current parking space state
Under parking space state judge distance adjusted value.
In one embodiment, in order to be further ensured that demarcate after parking space state judge distance accuracy, improve car
The accuracy rate of position condition adjudgement, above-mentioned adjustment calculation unit, including：
Most value treatment subelement, for removing the most value in multiple above-mentioned mahalanobis distance result of calculations；
Adjustment calculation subelement, for calculate remove the geneva of the multiple above-mentioned mahalanobis distance result of calculation after most value away from
From average, and the above-mentioned mahalanobis distance average that will be calculated judges the tune of distance as the parking space state under current parking space state
Whole value.
The function to adjusted value computing unit more than describes the car as can be seen that in the case where current parking space state is calculated
During position state judges the adjusted value of distance, first remove the most value in mahalanobis distance result of calculation, and calculate multiple geneva
Average apart from result of calculation is used as adjusted value, so as to judge distance to the parking space state under current parking space state by adjusted value
After being demarcated, it is ensured that parking space state judges the accuracy that distance is judged parking space state after demarcation, further increases car
The accuracy rate of position condition adjudgement.
In sum, calculated by the mahalanobis distance to multiple microstrip antenna data and parking space state reference data,
Obtain the adjusted value that parking space state under current parking space state judges distance, thus by pair with apart from unrelated microstrip antenna number
According to carrying out simple computation, it is possible to the adjusted value that parking space state judges distance is obtained, without additionally mounted other measurement distances
Device gathers range data to judge that distance is demarcated to parking space state, simple to operate and reduce use cost.
What the embodiment of the present invention was provided carries out the computer program product of parking space state a reference value demarcation, including stores
The computer-readable recording medium of program code, the instruction that said procedure code includes can be used in execution previous methods embodiment
Above-mentioned method, implements and can be found in embodiment of the method, will not be repeated here.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method, can be with
Realize by another way.Device embodiment described above is only schematical, for example, the division of said units,
It is only a kind of division of logic function, there can be other dividing mode when actually realizing, but for example, multiple units or component can
To combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or beg for
The coupling each other of opinion or direct-coupling or communication connection can be by some communication interfaces, device or unit it is indirect
Coupling is communicated to connect, and can be electrical, mechanical or other forms.
The above-mentioned unit that is illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be according to the actual needs selected to realize the mesh of this embodiment scheme
's.
In addition, during each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.
If above-mentioned functions are to realize in the form of SFU software functional unit and as independent production marketing or when using, can be with
Storage is in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used to so that a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment above method of the invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
Above-mentioned, specific embodiment only of the invention, but protection scope of the present invention above is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention is answered and above-mentioned is defined by scope of the claims.
Claims (10)
1. a kind of parking space state a reference value scaling method, it is characterised in that including：
When parking stall is in having car state or without car state, it is determined that the parking space state reference data under current parking space state；
According to the parking space state reference data, the adjustment that the parking space state under the current parking space state judges distance is calculated
Value；
By the adjusted value to current parking space state under the parking space state judge distance demarcate.
2. method according to claim 1, it is characterised in that it is determined that the parking space state base value under current parking space state
According to, including：
When failing to get the parking space state reference data under current parking space state, multigroup microstrip antenna echo data is obtained；
Calculate the average value of each group microstrip antenna echo data in multigroup microstrip antenna echo data；
By the average value of microstrip antenna echo data described in each group that is calculated, it is determined that the car under current parking space state
Position state reference data.
3. method according to claim 2, it is characterised in that by microstrip antenna number of echoes described in each group that is calculated
According to the average value parking space state reference data that determines under current parking space state, including：
Remove the most value in the average value of microstrip antenna echo data described in each group；
The mean data of the average value of microstrip antenna echo data described in each group after most value is removed in calculating, and described equal by what is obtained
Value Data is used as the parking space state reference data under current parking space state.
4. method according to claim 1, it is characterised in that according to the parking space state reference data, calculates described working as
Parking space state under preceding parking space state judges the adjusted value of distance, including：
Obtain multiple microstrip antenna data；
Calculate multiple microstrip antenna data respectively with the mahalanobis distance of the parking space state reference data, obtain multiple geneva
Apart from result of calculation；
According to multiple mahalanobis distance result of calculations, the tune that the parking space state under the current parking space state judges distance is calculated
Whole value.
5. method according to claim 4, it is characterised in that according to multiple mahalanobis distance result of calculations, calculates and works as
Parking space state under preceding parking space state judges the adjusted value of distance, including：
Remove the most value in multiple mahalanobis distance result of calculations；
The mahalanobis distance average of the multiple described mahalanobis distance result of calculation after most value is removed in calculating, and described in being calculated
Mahalanobis distance average judges the adjusted value of distance as the parking space state under current parking space state.
6. a kind of parking space state a reference value caliberating device, it is characterised in that including：
Determining module, for when parking stall is in having car state or without car state, it is determined that the parking space state under current parking space state
Reference data；
Adjustment calculation module, for according to the parking space state reference data, calculating the parking stall under the current parking space state
State judges the adjusted value of distance；
Demarcating module, for by the adjusted value to current parking space state under the parking space state judge distance enter rower
It is fixed.
7. device according to claim 6, it is characterised in that the determining module, including：
Acquiring unit, for when failing to get the parking space state reference data under current parking space state, obtaining multigroup micro-strip
Antenna echo data；
Average calculation unit, for calculating the flat of each group microstrip antenna echo data in multigroup microstrip antenna echo data
Average；
Reference data determining unit, for the average value of microstrip antenna echo data described in each group by being calculated, it is determined that
The parking space state reference data under current parking space state.
8. device according to claim 7, it is characterised in that the reference data determining unit, including：
Treatment subelement, for removing the most value in the average value of microstrip antenna echo data described in each group；
Computation subunit, the mean data of the average value of microstrip antenna echo data described in each group after most value is removed for calculating,
And the mean data that will be obtained is used as the parking space state reference data under current parking space state.
9. device according to claim 6, it is characterised in that the adjustment calculation module, including：
Microstrip antenna data capture unit, for obtaining multiple microstrip antenna data；
Mahalanobis distance computing unit, for calculate multiple microstrip antenna data respectively with the parking space state reference data
Mahalanobis distance, obtains multiple mahalanobis distance result of calculations；
Adjustment calculation unit, for according to multiple mahalanobis distance result of calculations, calculating under the current parking space state
Parking space state judges the adjusted value of distance.
10. device according to claim 9, it is characterised in that the adjustment calculation unit, including：
Most value treatment subelement, for removing the most value in multiple mahalanobis distance result of calculations；
Adjustment calculation subelement, the mahalanobis distance that the multiple described mahalanobis distance result of calculation after most value is removed for calculating is equal
Value, and the mahalanobis distance average that will be calculated judges the adjustment of distance as the parking space state under current parking space state
Value.
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| CN201611189519.4A CN106781659B (en) | 2016-12-21 | 2016-12-21 | A kind of parking space state a reference value scaling method and device |
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| CN106781659B (en) | 2019-09-13 |
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