CN107293151A - Method for detecting parking stalls and parking stall measure system based on Magnetic Sensor - Google Patents
Method for detecting parking stalls and parking stall measure system based on Magnetic Sensor Download PDFInfo
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- CN107293151A CN107293151A CN201710538169.6A CN201710538169A CN107293151A CN 107293151 A CN107293151 A CN 107293151A CN 201710538169 A CN201710538169 A CN 201710538169A CN 107293151 A CN107293151 A CN 107293151A
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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
- G08G1/145—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
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Abstract
The present invention relates to a kind of method for detecting parking stalls based on Magnetic Sensor and parking stall measure system, ground magnetic machine is provided with parking stall, ground magnetic machine includes the first Magnetic Sensor and the second Magnetic Sensor with certain distance interval, and this method includes：Synchronization, receives the magnetic field intensity that the first Magnetic Sensor and the second Magnetic Sensor in this parking stall Shangdi magnetic machine are detected；The magnetic field intensity difference of first Magnetic Sensor and the second Magnetic Sensor is compared with default first magnetic field intensity threshold value, the occupancy situation of the parking stall is determined according to comparative result.Whether adjacent parking stall has logical subway below car and this parking stall to nor affect on the accuracy in detection that this parking stall takes, even if vehicle is parked in inside the parking stall always, accurate detection can be also realized, therefore this method accuracy in detection is high, strong antijamming capability, can effectively reduce parking dispute.
Description
Technical field
The present invention relates to parking stall measure field, more particularly to a kind of method for detecting parking stalls and parking stall based on Magnetic Sensor
Detecting system.
Background technology
With the raising developed rapidly with civil plantation level in city, the various vehicle fleet sizes in city constantly increase, therewith
And come be exactly automobile problem of parking, and office building, the parking position in living area are limited, cause parking position anxiety, therefore,
In the case where not influenceing traffic, city road both sides open up temporary parking berth, alleviate the difficult contradiction of city parking, this is
The certainty of Urban Traffic Planning development, this unattended parking mode, it is impossible to which what is lacked is that this perception of Magnetic Sensor is set
It is standby.
The existing stall testing apparatus based on Magnetic Sensor, normally referred to as magnetic machine, its method use one
A ground magnetic machine is installed in individual parking stall, and a Magnetic Sensor built in ground magnetic machine, automobile passes in and out parking stall, can cause parking stall periphery
The change in magnetic field, using the Magnetic Sensor in two adjacent change of magnetic field strength differences not in the same time and default magnetic field intensity
Threshold value is compared, so as to judge whether there is car movement on parking stall.Although the method can detect the state of vehicles while passing parking stall,
But accuracy in detection is not high, whether adjacent parking stall has car on car and road also to detecting that the seizure condition of this parking stall is done
Disturb very greatly, if vehicle is parked in inside parking stall always, existing detection method also can't detect whether the parking stall has storing cycle,
If moreover, logical subway below the parking stall, the existing method for detecting parking stalls based on Magnetic Sensor will fail, thus hold very much
Easily cause parking dispute.
The content of the invention
Based on this, it is necessary to which providing a kind of can improve the car based on Magnetic Sensor of accuracy in detection and strong antijamming capability
Position detecting method.
Ground magnetic machine, described ground magnetic machine are provided with a kind of method for detecting parking stalls based on Magnetic Sensor, the parking stall
Including the first Magnetic Sensor and the second Magnetic Sensor with certain distance interval, methods described includes：
Synchronization, receives the first Magnetic Sensor and the second Magnetic Sensor on this parking stall in described ground magnetic machine and detects
Magnetic field intensity；
The magnetic field intensity difference of first Magnetic Sensor and second Magnetic Sensor and default first magnetic field is strong
Degree threshold value is compared, and the occupancy situation of the parking stall is determined according to comparative result.
In one of the embodiments, it is described the parking stall is determined according to comparative result occupancy situation the step of include：
If the magnetic field intensity difference is more than or equal to the first magnetic field intensity threshold value, the parking stall is occupied；
If the magnetic field intensity difference is less than the first magnetic field intensity threshold value, the parking stall is unoccupied.
In one of the embodiments, it is described the parking stall is determined according to comparative result occupancy situation the step of include：
If the magnetic field intensity difference is by less than described in the first magnetic field intensity changes of threshold to final be more than or equal to
First magnetic field intensity threshold value, then the parking stall is to be changed into final occupied state from unoccupied state；
If the magnetic field intensity difference is by described to being finally less than more than or equal to the first magnetic field intensity changes of threshold
First magnetic field intensity threshold value, then the parking stall is to revert to unoccupied state by seizure condition；
If the magnetic field intensity difference is consistently greater than or equal to the first magnetic field intensity threshold value, the parking stall is all the time
Occupied state；
If the magnetic field intensity difference is consistently less than the first magnetic field intensity threshold value, the parking stall is not occupied all the time
Use state.
In one of the embodiments, the first magnetic field intensity threshold value and first Magnetic Sensor and second magnetic
The distance between sensor proportional.
Another further aspect, the present invention also proposes to be provided with a kind of method for detecting parking stalls based on Magnetic Sensor, the parking stall
Ground magnetic machine, described ground magnetic machine includes the first Magnetic Sensor and the second Magnetic Sensor with certain distance interval, the side
Method includes：
Synchronization, receives the first Magnetic Sensor and the second Magnetic Sensor on this parking stall in described ground magnetic machine and detects
Magnetic field intensity；
Magnetic field gradient value is compared with default second magnetic field gradient strength threshold value, according to being determined comparative result
The occupancy situation of parking stall, the magnetic field gradient value is poor for the magnetic field intensity of first Magnetic Sensor and second Magnetic Sensor
Value carries out the numerical value that division arithmetic is obtained with the distance between first Magnetic Sensor and second Magnetic Sensor.
In one of the embodiments, it is described the parking stall is determined according to comparative result occupancy situation the step of include：
If the magnetic field gradient value is more than or equal to the second magnetic field gradient strength threshold value, the parking stall is occupied；
If the magnetic field gradient value is less than the second magnetic field gradient strength threshold value, the parking stall is unoccupied.
In one of the embodiments, it is described the parking stall is determined according to comparative result occupancy situation the step of include：
If the magnetic field gradient value to final less than the second magnetic field gradient strength changes of threshold by being more than or equal to institute
The second magnetic field gradient strength threshold value is stated, then the parking stall is to be changed into final occupied state from unoccupied state；
If the magnetic field gradient value is by more than or equal to the second magnetic field gradient strength changes of threshold to finally less than institute
The second magnetic field gradient strength threshold value is stated, then the parking stall is to revert to unoccupied state by seizure condition；
If the magnetic field gradient value is consistently greater than or equal to the second magnetic field gradient strength threshold value, the parking stall is all the time
It is occupied state；
If the magnetic field gradient value is consistently less than the second magnetic field gradient strength threshold value, the parking stall be all the time not by
Seizure condition.
On the other hand, the present invention also proposes a kind of parking stall measure system based on Magnetic Sensor, including：
First Magnetic Sensor, is arranged on parking stall；
Second Magnetic Sensor, is arranged on the parking stall；
Processor, for by the magnetic field intensity difference of first Magnetic Sensor and second Magnetic Sensor with it is default
First magnetic field intensity threshold value is compared, and the occupancy situation of the parking stall is determined according to comparative result.
In one of the embodiments, the processor determines the occupancy situation of the parking stall according to comparative result, including：
If the magnetic field intensity difference is more than or equal to the first magnetic field intensity threshold value, the parking stall is occupied；
If the magnetic field intensity difference is less than the first magnetic field intensity threshold value, the parking stall is unoccupied.
In one of the embodiments, the processor determines the occupancy situation of the parking stall according to comparative result, including：
If the magnetic field intensity difference is by less than described in the first magnetic field intensity changes of threshold to final be more than or equal to
First magnetic field intensity threshold value, then the parking stall is to be changed into final occupied state from unoccupied state；
If the magnetic field intensity difference is by described to being finally less than more than or equal to the first magnetic field intensity changes of threshold
First magnetic field intensity threshold value, then the parking stall is to revert to unoccupied state by seizure condition；
If the magnetic field intensity difference is consistently greater than or equal to the first magnetic field intensity threshold value, the parking stall is all the time
Occupied state；
If the magnetic field intensity difference is consistently less than the first magnetic field intensity threshold value, the parking stall is not occupied all the time
Use state.
Above-mentioned method for detecting parking stalls and parking stall measure system based on Magnetic Sensor, using this Magnetic Sensor of parking stall first and
The magnetic field intensity difference of second Magnetic Sensor is compared with default first magnetic field intensity threshold value, and institute is determined according to comparative result
The occupancy situation of parking stall is stated, whether adjacent parking stall has logical subway below car and this parking stall to nor affect on the detection that this parking stall takes
The degree of accuracy, even if vehicle is parked in inside the parking stall always, can also realize accurate detection, therefore this method accuracy in detection is high,
Strong antijamming capability, can effectively reduce parking dispute.
Brief description of the drawings
Fig. 1 is the flow chart of the method for detecting parking stalls based on Magnetic Sensor in an embodiment；
Fig. 2 is the flow chart of the method for detecting parking stalls based on Magnetic Sensor in another embodiment；
Fig. 3 is the flow chart of the method for detecting parking stalls based on Magnetic Sensor in another embodiment；
Fig. 4 is the system block diagram of the parking stall measure system based on Magnetic Sensor in an embodiment.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the preferred embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose that these embodiments are provided be make to the disclosure more it is thorough comprehensively.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
Referring to Fig. 1, Fig. 1 is the flow chart of the method for detecting parking stalls based on Magnetic Sensor in an embodiment.
In the present embodiment, being somebody's turn to do the method for detecting parking stalls based on Magnetic Sensor includes：
S100, receives the magnetic field intensity that the first Magnetic Sensor and the second Magnetic Sensor are detected on this parking stall.
Automobile is ferromagnetic material, and when automobile passes in and out parking stall, during movement, periphery magnetic field can be produced with the time
Change.Ground magnetic machine is a kind of detection device for whether having car on off-position for detecting, ground magnetic machine is installed on this parking stall,
Ground magnetic machine includes the first Magnetic Sensor and the second Magnetic Sensor with certain distance interval, the first Magnetic Sensor and the second magnetic
Sensor can just be detected simultaneously by magnetic field intensity at any time.
S200, by the magnetic field intensity difference of the first Magnetic Sensor and the second Magnetic Sensor and default first magnetic field intensity threshold
Value is compared, and the occupancy situation of parking stall is determined according to comparative result.
The magnetic field intensity that first Magnetic Sensor and the second Magnetic Sensor are detected simultaneously by carries out subtraction, obtains first
The magnetic field intensity difference of Magnetic Sensor and the second Magnetic Sensor, the first magnetic field intensity threshold value is set in advance, therefore
The magnetic field intensity difference is compared with the first magnetic field intensity threshold value, the occupancy feelings of parking stall are just can determine that according to comparative result
Condition.
This method is that the magnetic field intensity using the first Magnetic Sensor and the second Magnetic Sensor simultaneously to this parking stall is detected,
And it is to be entered using the magnetic field intensity difference of the first Magnetic Sensor and the second Magnetic Sensor with default first magnetic field intensity threshold value
Row compares, therefore, if vehicle is parked in inside the parking stall logical subway below the either parking stall always, nor affects on the party
The accuracy of detection of method.In addition, actual conditions are proved, magnetic field intensity difference decays quickly with the increase of distance, therefore adjacent car
The disturbance of magnetic field of car does not influence substantially on the accuracy in detection of this parking stall in the changes of magnetic field and road of position.
The above-mentioned method for detecting parking stalls based on Magnetic Sensor, is detected simultaneously using the first Magnetic Sensor and the second Magnetic Sensor
To magnetic field intensity difference be compared with default first magnetic field intensity threshold value, the occupancy feelings of parking stall are determined according to comparative result
Condition, can effectively improve accuracy in detection, and strong antijamming capability.
Referring to Fig. 2, Fig. 2 is the flow chart of the method for detecting parking stalls based on Magnetic Sensor in another embodiment.
In the present embodiment, being somebody's turn to do the method for detecting parking stalls based on Magnetic Sensor includes：
S102, receives the magnetic field intensity that the first Magnetic Sensor and the second Magnetic Sensor are detected on this parking stall.
S202, judges whether the magnetic field intensity difference of the first and second Magnetic Sensors is less than the first magnetic field intensity threshold value.
Compare magnetic field intensity difference that the first Magnetic Sensor and the second Magnetic Sensor detect and default first magnetic field is strong
The size of threshold value is spent, if magnetic field intensity difference is less than default first magnetic field intensity threshold value, into step S304, if magnetic field intensity
Difference is more than or equal to default first magnetic field intensity threshold value, into step S302.
S302, judges that parking stall is occupied.
If the magnetic field intensity difference that the first Magnetic Sensor and the second Magnetic Sensor are detected simultaneously by any time is more than
Or equal to default first magnetic field intensity threshold value, then illustrate that this parking stall is in occupied state.In one embodiment,
One magnetic field intensity threshold value and the distance between the first Magnetic Sensor and the second Magnetic Sensor proportional.
S304, judges that parking stall is unoccupied.
If the magnetic field intensity difference that the first Magnetic Sensor and the second Magnetic Sensor are detected simultaneously by any time is less than
Default first magnetic field intensity threshold value, in one embodiment, magnetic field intensity difference are 0, then illustrate this parking stall in not
Occupied state.
Referring to Fig. 3, Fig. 3 is the flow chart of the method for detecting parking stalls based on Magnetic Sensor in another embodiment.
In the present embodiment, being somebody's turn to do the method for detecting parking stalls based on Magnetic Sensor includes：
S110, receives the magnetic field intensity that the first Magnetic Sensor and the second Magnetic Sensor are detected on this parking stall.
S210, judges whether the magnetic field intensity difference of the first and second Magnetic Sensors is less than the first magnetic field intensity threshold value.
The currently detected magnetic field intensity of first Magnetic Sensor and the second Magnetic Sensor is subjected to subtraction, first is obtained
The magnetic field intensity difference of Magnetic Sensor and the second Magnetic Sensor, by the magnetic field intensity difference and default first magnetic field intensity threshold value
It is compared, if magnetic field intensity difference is more than or equal to default first magnetic field intensity threshold value, determines whether variation tendency
Afterwards, into step S311 or S312, if magnetic field intensity difference is less than default first magnetic field intensity threshold value, determine whether
After variation tendency, into step S411 or S412.
S311, if difference by less than be changed to finally be more than or equal to the first magnetic field intensity threshold value, parking stall be by not by
Seizure condition is changed into final occupied state.
Certain moment, will be to comprising being now engraved in if magnetic field intensity difference is more than or equal to the first magnetic field intensity threshold value
The result of certain interior period is counted, if within the period, magnetic field intensity difference is by less than the first magnetic field intensity threshold value
It is changed to and is finally more than or equal to the first magnetic field intensity threshold value, then parking stall is to be changed into final occupied shape from unoccupied state
State.
S312, if difference is consistently greater than or equal to the first magnetic field intensity threshold value, parking stall is occupied state all the time.
Certain moment, will be to comprising being now engraved in if magnetic field intensity difference is more than or equal to the first magnetic field intensity threshold value
The result of certain interior period is counted, if within the period, magnetic field intensity difference is greater than or equal to the first magnetic all the time
Field intensity threshold value, then parking stall is occupied state all the time.
S411, if difference is by more than or equal to finally less than the first magnetic field intensity threshold value is changed to, parking stall is by taking
State reverts to unoccupied state.
Certain moment, will be to including certain in being now engraved in if magnetic field intensity difference is less than the first magnetic field intensity threshold value
The result of period is counted, if within the period, magnetic field intensity difference is by more than or equal to the first magnetic field intensity threshold value
Finally less than the first magnetic field intensity threshold value is changed to, then parking stall is to revert to unoccupied state by seizure condition.
S412, if difference is consistently less than the first magnetic field intensity threshold value, parking stall is unoccupied state all the time.
Certain moment, will be to including certain in being now engraved in if magnetic field intensity difference is less than the first magnetic field intensity threshold value
The result of period is counted, if within the period, magnetic field intensity difference is less than the first magnetic field intensity threshold value all the time, then
Parking stall is unoccupied state all the time.
On the other hand, the present invention also proposes to be provided with earth magnetism on a kind of method for detecting parking stalls based on Magnetic Sensor, parking stall
Equipment, ground magnetic machine includes the first Magnetic Sensor and the second Magnetic Sensor with certain distance interval, and this method includes following
Step：
Synchronization, receives the magnetic that the first Magnetic Sensor and the second Magnetic Sensor in this parking stall Shangdi magnetic machine are detected
Field intensity；
Magnetic field gradient value is compared with default second magnetic field gradient strength threshold value, parking stall is determined according to comparative result
Occupancy situation, magnetic field gradient value is the magnetic field intensity difference and the first Magnetic Sensor of the first Magnetic Sensor and the second Magnetic Sensor
The numerical value that division arithmetic is obtained is carried out with the distance between the second Magnetic Sensor.
Automobile is ferromagnetic material, and when automobile passes in and out parking stall, during movement, periphery magnetic field can be produced with the time
Change.Ground magnetic machine is installed on this parking stall, ground magnetic machine includes the first Magnetic Sensor and the with certain distance interval
Two Magnetic Sensors, the first Magnetic Sensor and the second Magnetic Sensor can just be detected simultaneously by magnetic field intensity at any time.By
Magnetic field intensity that one Magnetic Sensor and the second Magnetic Sensor are detected simultaneously by carries out subtraction, obtains the first Magnetic Sensor and the
The magnetic field intensity difference of two Magnetic Sensors.By between the magnetic field intensity difference and the first Magnetic Sensor and the second Magnetic Sensor away from
Magnetic field gradient value is just obtained from division arithmetic is carried out.Second magnetic field gradient strength threshold value is set in advance, therefore will
The magnetic field gradient value is compared with the second magnetic field gradient strength threshold value, and the occupancy feelings of parking stall are just can determine that according to comparative result
Condition.
This method is to be compared using magnetic field gradient value with default second magnetic field gradient strength threshold value, therefore, if
It is that vehicle is parked in inside the parking stall logical subway below the either parking stall always, nor affects on the accuracy of detection of this method.This
Outside, actual conditions are proved, magnetic field gradient value decays quickly with the increase of distance, therefore the changes of magnetic field and road of adjacent parking stall
The disturbance of magnetic field of car does not influence substantially on the accuracy in detection of this parking stall on road.
In one embodiment, the step of determining the occupancy situation of the parking stall according to comparative result includes：
If the magnetic field gradient value is more than or equal to the second magnetic field gradient strength threshold value, the parking stall is occupied；
If the magnetic field gradient value is less than the second magnetic field gradient strength threshold value, the parking stall is unoccupied.
Compare the size of magnetic field gradient value and default second magnetic field gradient strength threshold value, preset if magnetic field gradient value is less than
The second magnetic field gradient strength threshold value, then illustrate this parking stall be in unoccupied state, if magnetic field gradient value is more than or waited
In default second magnetic field gradient strength threshold value, then illustrate that this parking stall is in occupied state.
In one embodiment, the step of determining the occupancy situation of the parking stall according to comparative result includes：
If the magnetic field gradient value to final less than the second magnetic field gradient strength changes of threshold by being more than or equal to institute
The second magnetic field gradient strength threshold value is stated, then the parking stall is to be changed into final occupied state from unoccupied state；
If the magnetic field gradient value is by more than or equal to the second magnetic field gradient strength changes of threshold to finally less than institute
The second magnetic field gradient strength threshold value is stated, then the parking stall is to revert to unoccupied state by seizure condition；
If the magnetic field gradient value is consistently greater than or equal to the second magnetic field gradient strength threshold value, the parking stall is all the time
It is occupied state；
If the magnetic field gradient value is consistently less than the second magnetic field gradient strength threshold value, the parking stall be all the time not by
Seizure condition.
Certain moment, will be to including this moment if magnetic field gradient value is more than or equal to the second magnetic field gradient strength threshold value
The result of certain period inside is counted, if within the period, magnetic field gradient value is by less than the second magnetic field gradient strength
Changes of threshold is to the second magnetic field gradient strength threshold value is finally more than or equal to, then parking stall is to be changed into finally quilt from unoccupied state
Seizure condition；If within the period, magnetic field gradient value is greater than or equal to the second magnetic field gradient strength threshold value all the time, then parking stall
All the time it is occupied state.
Certain moment, will be to comprising in being now engraved in if magnetic field gradient value is less than the second magnetic field gradient strength threshold value
The result of certain period is counted, if within the period, magnetic field gradient value is by more than or equal to the second magnetic field gradient strength
Changes of threshold to finally less than the second magnetic field gradient strength threshold value, then parking stall is to revert to unoccupied state by seizure condition；
If within the period, magnetic field gradient value is less than the second magnetic field gradient strength threshold value all the time, then parking stall is unoccupied all the time
State.
Referring to Fig. 4, Fig. 4 is the system block diagram of the parking stall measure system based on Magnetic Sensor in an embodiment.
In the present embodiment, being somebody's turn to do the parking stall measure system 40 based on Magnetic Sensor includes：First Magnetic Sensor 10, the second magnetic
Sensor 20 and processor 30.First Magnetic Sensor 10 and the second Magnetic Sensor 20 are all disposed within parking stall, for detecting the car
The magnetic field intensity of position.Processor 30 is used for the magnetic field intensity difference for detecting the first Magnetic Sensor 10 and the second Magnetic Sensor 20
It is compared with default first magnetic field intensity threshold value, the occupancy situation of parking stall is determined according to comparative result.
In one embodiment, the processor 30 determines the occupancy situation of parking stall according to comparative result, including：
If the magnetic field intensity difference that the first Magnetic Sensor 10 and the second Magnetic Sensor 20 are detected is more than or equal to the first magnetic
Field intensity threshold value, the parking stall is occupied；
If the magnetic field intensity difference that the first Magnetic Sensor 10 and the second Magnetic Sensor 20 are detected is less than the first magnetic field intensity
Threshold value, the parking stall is unoccupied.
In one embodiment, processor 30 determines the occupancy situation of parking stall according to comparative result, including：
If the magnetic field intensity difference that the first Magnetic Sensor 10 and the second Magnetic Sensor 20 are detected is by strong less than the first magnetic field
Changes of threshold is spent to the first magnetic field intensity threshold value is finally more than or equal to, then the parking stall is to be changed into finally quilt from unoccupied state
Seizure condition；
If the magnetic field intensity difference that the first Magnetic Sensor 10 and the second Magnetic Sensor 20 are detected is by more than or equal to first
Magnetic field intensity changes of threshold to finally less than the first magnetic field intensity threshold value, then the parking stall be reverted to by seizure condition it is unoccupied
State；
If the magnetic field intensity difference that the first Magnetic Sensor 10 and the second Magnetic Sensor 20 are detected is consistently greater than or equal to
One magnetic field intensity threshold value, then the parking stall is occupied state all the time；
If the magnetic field intensity difference that the first Magnetic Sensor 10 and the second Magnetic Sensor 20 are detected is consistently less than the first magnetic field
Intensity threshold, then the parking stall is unoccupied state all the time.
In one embodiment, the distance between the first Magnetic Sensor 10 and the second Magnetic Sensor 20 excursion be [3 ±
5%, 20 ± 5%] cm.
In one embodiment, being somebody's turn to do the parking stall measure system 40 based on Magnetic Sensor also includes the 3rd Magnetic Sensor, the 3rd
Magnetic Sensor is also disposed on parking stall, the magnetic field intensity for detecting the parking stall.Processor 30 is used for the first Magnetic Sensor 10
The magnetic field intensity difference being detected simultaneously by with the second Magnetic Sensor 20 is compared with default first magnetic field intensity threshold value A；Will
The magnetic field intensity difference that first Magnetic Sensor 10 and the 3rd Magnetic Sensor are detected simultaneously by and default first magnetic field intensity threshold value B
It is compared；The magnetic field intensity difference that second Magnetic Sensor 20 and the 3rd Magnetic Sensor are detected simultaneously by and default first magnetic
Field intensity threshold value C is compared, and the occupancy situation of parking stall is determined according to comparative result.As long as it is that magnetic field is strong to have one group of comparative result
Spend difference and be more than or equal to default first magnetic field intensity threshold value, then the parking stall is occupied state.One embodiment wherein
In, default first magnetic field intensity threshold value A, default first magnetic field intensity threshold value B and default first magnetic field intensity threshold value C numbers
Value is identical, in other embodiments, default first magnetic field intensity threshold value A, default first magnetic field intensity threshold value B and default
First magnetic field intensity threshold value C numerical value is differed.
In one embodiment, being somebody's turn to do the parking stall measure system 40 based on Magnetic Sensor also includes the 4th sensor, the 4th magnetic
Sensor is also disposed on parking stall, the magnetic field intensity for detecting the parking stall.Processor 30 is used for the first Magnetic Sensor 10, the
The magnetic field intensity difference that any two Magnetic Sensor is detected simultaneously by two Magnetic Sensors 20,3rd sensor and the 4th sensor
It is compared with default first magnetic field intensity threshold value, as long as there is one group of comparative result to be that magnetic field intensity difference is more than or equal in advance
If the first magnetic field intensity threshold value, then the parking stall is occupied state.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. ground magnetic machine, described ground magnetic machine bag are provided with a kind of method for detecting parking stalls based on Magnetic Sensor, the parking stall
Include the first Magnetic Sensor and the second Magnetic Sensor with certain distance interval, it is characterised in that methods described includes：
Synchronization, receives the magnetic that the first Magnetic Sensor and the second Magnetic Sensor on this parking stall in described ground magnetic machine are detected
Field intensity；
By the magnetic field intensity difference of first Magnetic Sensor and second Magnetic Sensor and default first magnetic field intensity threshold
Value is compared, and the occupancy situation of the parking stall is determined according to comparative result.
2. the method for detecting parking stalls according to claim 1 based on Magnetic Sensor, it is characterised in that described according to comparing knot
The step of fruit determines the occupancy situation of the parking stall includes：
If the magnetic field intensity difference is more than or equal to the first magnetic field intensity threshold value, the parking stall is occupied；
If the magnetic field intensity difference is less than the first magnetic field intensity threshold value, the parking stall is unoccupied.
3. the method for detecting parking stalls according to claim 2 based on Magnetic Sensor, it is characterised in that described according to comparing knot
The step of fruit determines the occupancy situation of the parking stall includes：
If the magnetic field intensity difference by less than the first magnetic field intensity changes of threshold to finally be more than or equal to described first
Magnetic field intensity threshold value, then the parking stall is to be changed into final occupied state from unoccupied state；
If the magnetic field intensity difference is by more than or equal to the first magnetic field intensity changes of threshold to finally less than described first
Magnetic field intensity threshold value, then the parking stall is to revert to unoccupied state by seizure condition；
If the magnetic field intensity difference is consistently greater than or equal to the first magnetic field intensity threshold value, the parking stall is occupied all the time
Use state；
If the magnetic field intensity difference is consistently less than the first magnetic field intensity threshold value, the parking stall is unoccupied shape all the time
State.
4. the method for detecting parking stalls according to any one of claim 1 to 3 based on Magnetic Sensor, it is characterised in that institute
State the first magnetic field intensity threshold value and the distance between first Magnetic Sensor and second Magnetic Sensor proportional.
5. ground magnetic machine, described ground magnetic machine bag are provided with a kind of method for detecting parking stalls based on Magnetic Sensor, the parking stall
Include the first Magnetic Sensor and the second Magnetic Sensor with certain distance interval, it is characterised in that methods described includes：
Synchronization, receives the magnetic that the first Magnetic Sensor and the second Magnetic Sensor on this parking stall in described ground magnetic machine are detected
Field intensity；
Magnetic field gradient value is compared with default second magnetic field gradient strength threshold value, the parking stall is determined according to comparative result
Occupancy situation, the magnetic field gradient value be first Magnetic Sensor and second Magnetic Sensor magnetic field intensity difference with
The distance between first Magnetic Sensor and second Magnetic Sensor carry out the numerical value that division arithmetic is obtained.
6. the method for detecting parking stalls according to claim 5 based on Magnetic Sensor, it is characterised in that described according to comparing knot
The step of fruit determines the occupancy situation of the parking stall includes：
If the magnetic field gradient value is more than or equal to the second magnetic field gradient strength threshold value, the parking stall is occupied；
If the magnetic field gradient value is less than the second magnetic field gradient strength threshold value, the parking stall is unoccupied.
7. the method for detecting parking stalls according to claim 6 based on Magnetic Sensor, it is characterised in that described according to comparing knot
The step of fruit determines the occupancy situation of the parking stall includes：
If the magnetic field gradient value by less than the second magnetic field gradient strength changes of threshold to being finally more than or equal to described the
Two magnetic field gradient strength threshold values, then the parking stall is to be changed into final occupied state from unoccupied state；
If the magnetic field gradient value is by more than or equal to the second magnetic field gradient strength changes of threshold to finally less than described
Two magnetic field gradient strength threshold values, then the parking stall is to revert to unoccupied state by seizure condition；
If the magnetic field gradient value is consistently greater than or equal to the second magnetic field gradient strength threshold value, the parking stall be all the time by
Seizure condition；
If the magnetic field gradient value is consistently less than the second magnetic field gradient strength threshold value, the parking stall is unoccupied all the time
State.
8. a kind of parking stall measure system based on Magnetic Sensor, it is characterised in that including：
First Magnetic Sensor, is arranged on parking stall；
Second Magnetic Sensor, is arranged on the parking stall；
Processor, for by the magnetic field intensity difference of first Magnetic Sensor and second Magnetic Sensor and default first
Magnetic field intensity threshold value is compared, and the occupancy situation of the parking stall is determined according to comparative result.
9. the parking stall measure system according to claim 8 based on Magnetic Sensor, it is characterised in that the processor according to
Comparative result determines the occupancy situation of the parking stall, including：
If the magnetic field intensity difference is more than or equal to the first magnetic field intensity threshold value, the parking stall is occupied；
If the magnetic field intensity difference is less than the first magnetic field intensity threshold value, the parking stall is unoccupied.
10. the parking stall measure system according to claim 9 based on Magnetic Sensor, it is characterised in that the processor root
The occupancy situation of the parking stall is determined according to comparative result, including：
If the magnetic field intensity difference by less than the first magnetic field intensity changes of threshold to finally be more than or equal to described first
Magnetic field intensity threshold value, then the parking stall is to be changed into final occupied state from unoccupied state；
If the magnetic field intensity difference is by more than or equal to the first magnetic field intensity changes of threshold to finally less than described first
Magnetic field intensity threshold value, then the parking stall is to revert to unoccupied state by seizure condition；
If the magnetic field intensity difference is consistently greater than or equal to the first magnetic field intensity threshold value, the parking stall is occupied all the time
Use state；
If the magnetic field intensity difference is consistently less than the first magnetic field intensity threshold value, the parking stall is unoccupied shape all the time
State.
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| CN111512186A (en) * | 2017-12-22 | 2020-08-07 | 罗伯特·博世有限公司 | Method and device for determining the occupancy state of a parking space |
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