CN109979203A - A kind of parking stall monitoring method and device based on earth magnetism monitoring - Google Patents
A kind of parking stall monitoring method and device based on earth magnetism monitoring Download PDFInfo
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- CN109979203A CN109979203A CN201910334973.1A CN201910334973A CN109979203A CN 109979203 A CN109979203 A CN 109979203A CN 201910334973 A CN201910334973 A CN 201910334973A CN 109979203 A CN109979203 A CN 109979203A
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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
- G08G1/02—Detecting movement of traffic to be counted or controlled using treadles built into the road
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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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- 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
- G08G1/141—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces
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- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The present invention discloses a kind of parking stall monitoring method based on earth magnetism monitoring, comprising the following steps: monitoring terminal acquisition parking stall background magnetic field as the first background magnetic field information and stores；Changes of magnetic field situation on terminal detection parking stall is monitored to store as the second changes of magnetic field information and according to FIFO way to manage；Monitoring terminal handles the second changes of magnetic field information, judges whether there is vehicle storage or outbound.The present invention also provides a kind of parking stall monitoring devices based on earth magnetism monitoring.Whether the present invention detects the changes of magnetic field on parking stall by the way that monitoring terminal is arranged on parking stall, analyze to obtain by changes of magnetic field and park cars on parking stall, achievees the purpose that parking space state monitors.
Description
Technical field
The present invention relates to parking space state detection control technology field more particularly to a kind of parking stall monitorings based on earth magnetism monitoring
Method and device.
Background technique
Intelligent transportation system increasingly by it is concerned by people simultaneously, information collection front as intelligent transportation system
One of wagon detector also increasingly by the concern of insider.Wagon detector is detection target, inspection with motor vehicles
Measuring car passes through or there are situation, collects relevant information, provide data supporting for intelligent transportation system.
Earth magnetism wagon detector is all the detection for carrying out vehicle-state in a detector at present, then wirelessly will inspection
It surveys result and issues platform.
Geomagnetic parking stall detection is normally based on parking stall background magnetic field, and detection parking stall changes of magnetic field state determines vehicles while passing.
Due to vehicle, the differentiation of parking stall, the factors such as normalization parked, after vehicle parking, GEOMAGNETIC CHANGE is widely different, there is detection
Less than wrong report, situations such as failing to report, accuracy rate is lower.
Summary of the invention
Current generated energy acquisition data there are aiming at the problem that, the present invention by it is a kind of based on earth magnetism monitoring parking stall monitoring
Method and device.
The technical solution adopted by the present invention are as follows:
A kind of parking stall monitoring method based on earth magnetism monitoring, comprising the following steps:
Monitoring terminal acquisition parking stall background magnetic field as the first background magnetic field information and stores；
Changes of magnetic field situation is as the second changes of magnetic field information and according to FIFO way to manage on monitoring terminal detection parking stall
Storage；
Monitoring terminal handles the second changes of magnetic field information, judges whether there is vehicle storage or outbound.
Further, the monitoring terminal acquisition parking stall background magnetic field as the first background magnetic field information and stores；Specifically
Include: that monitoring terminal is arranged on the ground of parking stall center, after monitoring terminal is installed, is car-free status on parking stall, opens
Dynamic monitoring terminal, is acquired the magnetic field on parking stall and obtains the first background magnetic field information and be stored in a storage unit.
As further technical solution of the present invention are as follows: store the corresponding benchmark of vehicle storage outbound in the storage unit
Changes of magnetic field curve.
As further technical solution of the present invention are as follows: changes of magnetic field situation is as the on monitoring terminal detection parking stall
Two changes of magnetic field information are simultaneously stored according to FIFO way to manage, and specifically include: monitoring terminal examines magnetic field conditions on parking stall
It surveys, when magnetic field changes on parking stall, monitoring terminal is detected and handled to parking stall magnetic field within a certain period of time, obtains the
Two changes of magnetic field information are simultaneously stored in a storage unit according to FIFO way to manage.
As further technical solution of the present invention are as follows: the monitoring terminal within a certain period of time to parking stall changes of magnetic field into
Row is detected and is handled, specifically: monitoring terminal is when there is changes of magnetic field on detecting parking stall, to vehicle in the time range of setting
Position changes of magnetic field situation is detected, by delay Key dithering to repeatedly storage or outbound information are corrected in the stipulated time.
As further technical solution of the present invention are as follows: the monitoring terminal handles the second changes of magnetic field information,
Judge whether there is vehicle storage or outbound, specifically include: monitoring terminal carries out processing to the second changes of magnetic field information and forms second
Changes of magnetic field curve；Second changes of magnetic field curve is fitted with reference magnetic field change curve, judges whether there is vehicle storage
Or outbound.
The present invention also provides a kind of parking stall monitoring devices based on earth magnetism monitoring, comprising:
Magnetic field detection unit, for on parking stall the first background magnetic field information and the second changes of magnetic field information examine
It surveys；
Control unit, the first background magnetic field information and the second changes of magnetic field information of reception magnetic field detection unit detection are simultaneously right
It is handled；
Storage unit manages the second changes of magnetic field information according to FIFO for storing to the first background magnetic field information
Reason mode is stored.
As further technical solution of the present invention are as follows: the magnetic field detection unit is arranged on parking stall center ground
On, the magnetic field detection unit uses three axis magnetoresistive sensors.
As further technical solution of the present invention are as follows: store the corresponding benchmark of vehicle storage outbound in the storage unit
Changes of magnetic field curve.
As further technical solution of the present invention are as follows: described control unit receives the first of magnetic field detection unit detection
Background magnetic field information and the second changes of magnetic field information are simultaneously handled it；Specifically include: control unit receives magnetic field detection list
Member is to the detection signal of magnetic field conditions on parking stall, and when magnetic field changes on parking stall, control unit is within a certain period of time to vehicle
Position magnetic field is detected and is handled, and obtains the second changes of magnetic field information and is stored in a storage unit.
Beneficial effects of the present invention:
The present invention detects the changes of magnetic field on parking stall by the way that monitoring terminal is arranged on parking stall, passes through changes of magnetic field
Whether analysis obtains parking cars on parking stall, realizes the monitoring of parking space state.It is in the initial state, first in the embodiment of the present invention
First the magnetic field under car-free status on parking stall is detected, and is deposited the magnetic field under the state as background magnetic field information
Storage, when vehicle drives into, the magnetic field on parking stall changes, and the Magnetic Field of monitoring terminal acquisition at this time is believed as changes of magnetic field
Breath is stored, after obtaining the second changes of magnetic field information, monitoring terminal the second changes of magnetic field curve of acquisition, and by the second magnetic field
Change curve is put in storage with vehicle or the changes of magnetic field curve of outbound is fitted and compares, to judge whether there is vehicle storage or go out
Library achievees the purpose that parking space state monitors.
Detailed description of the invention
Fig. 1 is a kind of parking stall monitoring method flow chart based on earth magnetism monitoring proposed by the present invention；
Fig. 2 is a kind of parking stall monitoring device structure chart based on earth magnetism monitoring proposed by the present invention.
Specific embodiment
Technical solution of the present invention is described in detail below in conjunction with attached drawing.
Referring to Fig. 1, for a kind of parking stall monitoring method flow chart based on earth magnetism monitoring provided by the invention.
As shown in Figure 1, a kind of parking stall monitoring method based on earth magnetism monitoring, comprising the following steps:
Step 101, monitoring terminal acquisition parking stall background magnetic field as the first background magnetic field information and stores；
Step 102, monitoring terminal detection parking stall on changes of magnetic field situation as the second changes of magnetic field information and according to FIFO
Way to manage storage；
Step 103, monitoring terminal handles the second changes of magnetic field information, judges whether there is vehicle storage or outbound.
A kind of parking stall monitoring method based on earth magnetism monitoring provided by the invention, by the way that monitoring terminal pair is arranged on parking stall
Whether the changes of magnetic field on parking stall is detected, analyze to obtain by changes of magnetic field and park cars on parking stall, realizes parking space state
Monitoring.In the embodiment of the present invention, in the initial state, the magnetic field under car-free status on parking stall is detected first, and will
Magnetic field under the state is stored as background magnetic field information, and when vehicle drives into, the magnetic field on parking stall changes, monitoring
The Magnetic Field of terminal acquisition at this time is stored as changes of magnetic field information, after obtaining the second changes of magnetic field information, monitoring
Terminal obtains the second changes of magnetic field curve, and by the second changes of magnetic field curve and vehicle be put in storage or the changes of magnetic field curve of outbound into
Row fitting compares, to judge whether there is vehicle storage or outbound, achievees the purpose that parking space state monitors.
In a step 101, the monitoring terminal acquisition parking stall background magnetic field as the first background magnetic field information and stores；Tool
Body includes: that monitoring terminal is arranged on the ground of parking stall center, is car-free status on parking stall after monitoring terminal is installed,
Starting monitoring terminal, is acquired the magnetic field on parking stall and obtains the first background magnetic field information and be stored in a storage unit.Inspection
Terminal setting is surveyed in the cornerwise crossover location in parking stall and concordant with ground surface, will not influence vehicle in this way drives into or be driven out to vehicle
Library, safe ready.
In a step 102, on the monitoring terminal detection parking stall changes of magnetic field situation as the second changes of magnetic field information simultaneously
Store, specifically include according to FIFO way to manage: monitoring terminal detects magnetic field conditions on parking stall, when magnetic field is sent out on parking stall
When changing, monitoring terminal is detected and is handled to parking stall magnetic field within a certain period of time, obtains the second changes of magnetic field information simultaneously
It is stored in a storage unit according to FIFO way to manage.
Wherein, storage vehicle is put in storage the corresponding reference magnetic field change curve of outbound in the memory unit.The reference magnetic field becomes
Changing curve includes the changes of magnetic field song obtained with vehicle under normal condition from the changes of magnetic field situation that the surrounding of parking stall drives into parking stall
Line, when obtaining the second changes of magnetic field curve, by being fitted with preset multiple reference magnetic field change curve comparisons, to judge
Vehicle running state on parking stall, it is final to obtain parking space state information.
Wherein, monitoring terminal is detected and is handled to parking stall changes of magnetic field within a certain period of time, specifically: monitoring terminal
When there is changes of magnetic field on detecting parking stall, parking stall changes of magnetic field situation is detected in the time range of setting, is passed through
Delay Key dithering is to repeatedly storage or outbound information are corrected in the stipulated time.
In step 103, monitoring terminal handles the second changes of magnetic field information, judges whether there is vehicle storage or goes out
Library specifically includes: monitoring terminal carries out processing to the second changes of magnetic field information and forms the second changes of magnetic field curve；By the second magnetic field
Change curve is fitted with reference magnetic field change curve, judges whether there is vehicle storage or outbound.
Monitoring terminal is installed on parking stall center i.e. parking stall diagonal line point of intersection, after monitoring terminal is installed, in equipment
Electricity restarts meeting in parking stall without vehicle, and without acquisition parking stall background magnetic field under other magnetic interference source environment, and is saved in monitoring terminal
In；Background magnetic field is for monitoring parking stall changes of magnetic field situation, if sensitive axes magnetic field strength or three-axle magnetic field intensity or magnetic field are disturbed
After dynamic angle change has exceeded the magnetic field strength thresholding after vehicle parking, then determine currently there is vehicle to drive into.After system starting,
Periodic monitor magnetic field data carries out data management, monitoring by FIFO (first in, first out, First Input First Output)
Changes of magnetic field curve will monitor changes of magnetic field curve, is periodically fitted, is fitted with vehicle behavior (storage, outbound) curve
It is determined as a vehicle mobile behavior after success.Such as: timing detection magnetic field change curve, if meeting magnetic field in a period of time
Changing rule meets vehicle outbound, the magnetic field rule of storage is then determined as vehicle storage or outbound.Based on vehicle behavior, parking stall magnetic
The monitoring of field variable quantity, in conjunction with vehicle behavior changing rule and Key dithering is (if multiple vehicle storage, outbound are recognized in the stipulated time
To be shake, determine again after a period of time that is delayed.), COMPREHENSIVE CALCULATING determines current parking space state.
Parking stall monitoring method provided in an embodiment of the present invention, (detection parking stall is quick for fusion sensitive axes change of magnetic field strength algorithm
Feel the variation of axis magnetic vector), three-axle magnetic field change algorithm (detection three-axle magnetic field Strength Changes amount, disturbance of magnetic field angle), vehicle
Behavior monitoring algorithm (whether detection parking stall changes of magnetic field curve is similar with storage changes of magnetic field model is gone out) and scene error correction are calculated
Method COMPREHENSIVE CALCULATING determines parking space state.Above-mentioned algorithm exclusive use has certain applicability, for example sensitive axes magnetic field strength becomes
It is higher to change the detection accuracy on universal car, but the minibus high for chassis, SUV vehicle rate of false alarm are high, pass through vehicle
The time window of behavior monitoring algorithm combination sensitive axes changes of magnetic field can effectively evade different automobile types difference, vehicle passes by
The problem of interference, improves parking stall measure precision and accuracy rate.Using sensitive axes data monitoring, disturbance of magnetic field monitoring, three axis magnetic
Field intensity variation effectively evades disturbance caused by surrounding magnetic field variation, is determined by vehicle behavior, effectively prevent judging by accident, melt
Many algorithms are closed, can more accurately confirm parking space state.By setting delay Key dithering, correction process is increased in the algorithm,
If current magnetic field data are less than or greater than certain thresholding with respect to background magnetic field variable quantity, parking stall is assert without vehicle or has vehicle, it is right
Than current parking space state, correction process is carried out.For the non-type parking stall that parking is difficult, adjustment storage is needed repeatedly repeatedly
Scene can be detected accurately, greatly improve the applicability of algorithm.
It referring to fig. 2, is a kind of parking stall monitoring device structure chart based on earth magnetism monitoring proposed by the present invention.
As shown in Fig. 2, a kind of parking stall monitoring device based on earth magnetism monitoring, comprising:
Magnetic field detection unit 201, for the first background magnetic field information and the progress of the second changes of magnetic field information on parking stall
Detection；
Control unit 202 receives the first background magnetic field information and the second changes of magnetic field information of the detection of magnetic field detection unit
And it is handled；
Storage unit 203, storage unit believe the second changes of magnetic field for storing to the first background magnetic field information
Breath is stored according to FIFO way to manage.
In the embodiment of the present invention, it is quick that parking stall monitoring device passes through the magnetic field detection unit real-time watch device being disposed therein
Feel axis changes of magnetic field, three-axle magnetic field variable quantity, disturbance of magnetic field angle, by control unit save field curve data, periodically into
Row field curve the Fitting Calculation, using change of magnetic field strength situation and curve matching state as input, adoption status machine carries out vehicle
Position state multi-level change management, comprehensive judgement confirm parking space state and variation.
Parking stall monitor terminal to the monitoring of parking stall occupied state by using built-in magnetoresistive sensor come real-time collecting vehicle
Earth magnetic field around position is realized.When car-free status, earth magnetic field distribution is relatively uniform, when vehicle is close or passes through
When magnetoresistive sensor, earth magnetic field is disturbed, and is handled by the edge algorithms of control unit, is analyzed and determined out current parking stall
State, technology sends parking space state information to background server by wireless communication.
In the embodiment of the present invention, magnetic field detection unit is arranged on the ground of parking stall center, the magnetic field detection unit
Using three axis magnetoresistive sensors.For being detected to parking stall magnetic field.
Wherein, the corresponding reference magnetic field change curve of vehicle storage outbound is stored in storage unit.
In the embodiment of the present invention, control unit receives the first background magnetic field information and second of magnetic field detection unit detection
Changes of magnetic field information is simultaneously handled it；Specifically include: control unit receives magnetic field detection unit to magnetic field conditions on parking stall
Detection signal, when magnetic field changes on parking stall, control unit is detected and is located to parking stall magnetic field within a certain period of time
Reason obtains the second changes of magnetic field information and is stored in a storage unit.
Parking stall monitoring device is installed on parking stall center (diagonal line point of intersection).After equipment is installed, device power weight
Meeting is opened in parking stall without vehicle, and without under other magnetic interference source environment, magnetic field detection unit acquires parking stall background magnetic field, is saved in and deposits
In storage unit.
Background magnetic field is for monitoring parking stall changes of magnetic field situation, if sensitive axes magnetic field strength or three-axle magnetic field intensity or magnetic
After field disturbs the magnetic field strength thresholding after angle change has exceeded vehicle parking, then determine currently there is vehicle to drive into.
After system starting, periodic monitor magnetic field data carries out data management by FIFO, monitors changes of magnetic field curve, will
It monitors changes of magnetic field curve, is periodically fitted, is determined as after being fitted successfully primary with vehicle behavior (storage, outbound) curve
Vehicle mobile behavior.Such as: timing detection magnetic field change curve, if meeting changes of magnetic field rule in a period of time meets vehicle
Outbound, storage magnetic field rule be then determined as vehicle storage or outbound.
Monitoring based on vehicle behavior, parking stall changes of magnetic field amount, in conjunction with vehicle behavior changing rule and Key dithering, if rule
Fixing time, interior multiple vehicle is put in storage, outbound is considered to shake, and is determined again after a period of time that is delayed；Front truck is worked as in COMPREHENSIVE CALCULATING determination
Position state.
By setting delay Key dithering, correction process is increased in the algorithm, if current magnetic field data are with respect to background magnetic
Field variable quantity is less than or greater than certain thresholding, then assert parking stall without vehicle or have vehicle, compares current parking space state, carries out at error correction
Reason.For the non-type parking stall that parking is difficult, needs the scene for repeatedly adjusting storage repeatedly that can accurately detect, greatly mention
The high applicability of algorithm.
Real-time monitoring parking space state of the present invention passes through sensitive axes changes of magnetic field, three-axle magnetic field variable quantity, disturbance of magnetic field angle
Degree, storage unit save field curve data, and control unit timing carries out field curve the Fitting Calculation, by change of magnetic field strength feelings
As input, adoption status machine carries out parking space state multistage change management for condition and curve matching state, and comprehensive judgement confirms parking stall
State and variation.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field can still modify to a specific embodiment of the invention referring to above-described embodiment or
Equivalent replacement, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent replacement
Within bright claims.
Claims (10)
1. a kind of parking stall monitoring method based on earth magnetism monitoring, which comprises the following steps:
Monitoring terminal acquisition parking stall background magnetic field as the first background magnetic field information and stores；
Changes of magnetic field situation on terminal detection parking stall is monitored to store as the second changes of magnetic field information and according to FIFO way to manage；
Monitoring terminal handles the second changes of magnetic field information, judges whether there is vehicle storage or outbound.
2. a kind of parking stall monitoring method based on earth magnetism monitoring according to claim 1, which is characterized in that the monitoring is eventually
End acquisition parking stall background magnetic field as the first background magnetic field information and stores；Specifically include: monitoring terminal is arranged at parking stall center
On position ground, monitoring terminal be installed after, on parking stall be car-free status, starting monitoring terminal, to the magnetic field on parking stall into
Row acquisition obtains the first background magnetic field information and is stored in a storage unit.
3. a kind of parking stall monitoring method based on earth magnetism monitoring according to claim 2, which is characterized in that the storage is single
The corresponding reference magnetic field change curve of vehicle storage outbound is stored in member.
4. a kind of parking stall monitoring method based on earth magnetism monitoring according to claim 1, which is characterized in that the monitoring is eventually
Changes of magnetic field situation is stored as the second changes of magnetic field information and according to FIFO way to manage on the detection parking stall of end, is specifically included:
Monitoring terminal detects magnetic field conditions on parking stall, and when magnetic field changes on parking stall, monitoring terminal is within a certain period of time
Parking stall magnetic field is detected and handled, the second changes of magnetic field information is obtained and is stored in storage unit according to FIFO way to manage
In.
5. a kind of parking stall monitoring method based on earth magnetism monitoring according to claim 4, which is characterized in that the monitoring is eventually
End is detected and is handled to parking stall changes of magnetic field within a certain period of time, specifically: monitoring terminal has magnetic on detecting parking stall
When the variation of field, parking stall changes of magnetic field situation is detected in the time range of setting, when by delay Key dithering to regulation
Interior multiple storage or outbound information are corrected.
6. a kind of parking stall monitoring method based on earth magnetism monitoring according to claim 1, which is characterized in that the monitoring is eventually
End handles the second changes of magnetic field information, judges whether there is vehicle storage or outbound, specifically includes: monitoring terminal is to second
Changes of magnetic field information carries out processing and forms the second changes of magnetic field curve；By the second changes of magnetic field curve and reference magnetic field change curve
It is fitted, judges whether there is vehicle storage or outbound.
7. any method provides a kind of parking stall monitoring device based on earth magnetism monitoring in -6 according to claim 1, special
Sign is, comprising:
Magnetic field detection unit, for on parking stall the first background magnetic field information and the second changes of magnetic field information detect；
Control unit, receive magnetic field detection unit detection the first background magnetic field information and the second changes of magnetic field information and to its into
Row processing；
Storage unit, for being stored to the first background magnetic field information, to the second changes of magnetic field information according to FIFO manager
Formula is stored.
8. a kind of parking stall monitoring device based on earth magnetism monitoring according to claim 7, which is characterized in that the magnetic field inspection
It surveys unit to be arranged on the ground of parking stall center, the magnetic field detection unit uses three axis magnetoresistive sensors.
9. a kind of parking stall monitoring device based on earth magnetism monitoring according to claim 7, which is characterized in that the storage is single
The corresponding reference magnetic field change curve of vehicle storage outbound is stored in member.
10. a kind of parking stall monitoring device based on earth magnetism monitoring according to claim 7, which is characterized in that the control
Unit receives the first background magnetic field information and the second changes of magnetic field information that magnetic field detection unit detects and handles it；
Specifically include: control unit receives magnetic field detection unit to the detection signal of magnetic field conditions on parking stall, when magnetic field occurs on parking stall
When variation, control unit is detected and is handled to parking stall magnetic field within a certain period of time, is obtained the second changes of magnetic field information and is deposited
Storage is in the memory unit.
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| CN114373306A (en) * | 2022-01-12 | 2022-04-19 | 中国公路工程咨询集团有限公司 | Vehicle passing detection method and system based on intelligent spike and storable medium |
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Application publication date: 20190705 |