CN206421575U - Mechanism for improving accuracy of geomagnetic vehicle detector - Google Patents
Mechanism for improving accuracy of geomagnetic vehicle detector Download PDFInfo
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- CN206421575U CN206421575U CN201720109042.8U CN201720109042U CN206421575U CN 206421575 U CN206421575 U CN 206421575U CN 201720109042 U CN201720109042 U CN 201720109042U CN 206421575 U CN206421575 U CN 206421575U
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- 231100000289 photo-effect Toxicity 0.000 claims description 3
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Abstract
The utility model relates to an improve mechanism of earth magnetism car inspection ware rate of accuracy in intelligent transportation and the internet of things field, include: the geomagnetic vehicle detector comprises a geomagnetic vehicle detector main body part and an improved expansion part; the geomagnetic vehicle detector main body part is an existing geomagnetic vehicle detector and can acquire other vehicle entering and exiting characteristic signals through an interface for optimization processing; the improved expansion part comprises other in-and-out characteristic signal sensors, a signal conditioning circuit and/or an A/D conversion circuit, a power supply and a control circuit. The problem of the missed measure of the false retrieval that adjacent vehicle earth magnetism interference effect that appears in using and specific vehicle earth magnetism signal are not enough to cause is used to current product, the utility model discloses can use other business turn over car characteristic signal through fusing at appropriate time-space point on earth magnetism signal processing mechanism basis for the more accurate method of information is more perfect, and the reinforcement is present not enough, has improved the rate of accuracy that the vehicle detected, has reduced the later maintenance cost, can be applicable to future various intelligent transportation and use.
Description
Technical field
The utility model is related to a kind of intelligent transportation and the mechanism of vehicle detection in Internet of Things field, more particularly to a kind of
On the basis of Geomagnetic signal processing, energy effective integration is other to be passed in and out car characteristic signals further to improve vehicle detection accuracy rate
Mechanism.
Background technology
At present, earth magnetism vehicle checker is simple dependence magnetoresistive transducer such as anisotropic magnetoresistance (AMR), tunnel magneto resistance
(TMR) or giant magnetoresistance (GMR) come collect magnetic field of the earth (hereinafter referred to as " earth magnetism ") data so as to deployment analysis handle with
To vehicle presence or absence, even the device of the information such as travel direction, speed, such as utility model patent " one kind have low-power consumption without
Line communicates the wagon detector with solar energy acquisition mechanism " (the patent No.：ZL201220578700.5 AMR magnetic resistance) is used to pass
Sensor.Earth magnetism vehicle checker is embodied in city roadside because compact, fast and easy are disposed and are increasingly widely applied
In Car park payment and various indoor and outdoor managing system of car parking, it almost instead of traditional ground induction coil and specially take charge of and provide highly reliable
The vehicle detection data or result of determination of high-accuracy.In terms of Related product running situation in the industry, existing earth magnetism vehicle checker is present
Problems with needs further Optimal improvements：1st, for the connected berth in left and right, because vehicle-to-vehicle distance is close, easily produce
Near-by interference effect, simple to rely on geomagnetic sensor data to detect vehicles while passing, the space that discrimination is further lifted is limited；
2nd, there is various complicated vehicles and parking condition on road, such as some car type vehicles are few not very bright to disturbance of magnetic field because of metal ingredient
Aobvious, some are then because driver is accustomed to and artificially produces various parkings lack of standardization so that earth magnetism vehicle checker easily produce missing inspection flase drop and
Must background process；3rd, vehicle checker is disturbed and failure because of earth magnetism sensing element under extreme case, and its self- recoverage time is different in size
Used so as to have impact on the normal of product.
Utility model content
The technical problems to be solved in the utility model, is to avoid above-mentioned the deficiencies in the prior art part and propose one kind and carry
The mechanism of high earth magnetism vehicle checker accuracy rate.The mechanism is on the basis of Geomagnetic signal processing, to pass through interface and other turnover cars spies
Reference number carries out use processing together, so as to more comprehensively more objectively carry out analysis judgement, reaches further raising
The vehicle identification accuracy rate of existing earth magnetism vehicle checker, and the controllable effect of power consumption.
The utility model, which solves described technical problem, to be achieved through the following technical solutions：
A kind of mechanism for improving earth magnetism vehicle checker accuracy rate is proposed, including：Earth magnetism vehicle checker main part extends with improving
Part；The earth magnetism vehicle checker main part refers to existing earth magnetism vehicle checker, and other turnover cars can be collected by interface
Characteristic signal is to optimize processing；The interface is：Signal input interface, power supply and control interface；The improvement extension
Point, including：Other turnover car characteristic signal sensors, signal conditioning circuit and/or A/D change-over circuits, power supply and control circuit；
Other turnover car characteristic signal sensors, including：Sound transducer, photoelectric sensor, range sensor or close sensing
The one of which of device or multinomial combination；Signal conditioning circuit and/or the A/D change-over circuit, is to be directed to other turnover cars
The use characteristic of characteristic signal sensor and design primary signal conversion enter for ease of the earth magnetism vehicle checker main part
The pretreatment circuit of row data acquisition desired signal；The power supply and control circuit, refer to the earth magnetism vehicle checker main part
When needing to gather other turnover car characteristic signal sensing datas, to the circuit for controlling appropriate section to work；The letter
Car characteristic signal sensor is wired is connected for number modulate circuit and/or its sensor interface of A/D change-over circuits and other turnover,
Its signal output with the signal input interface of the earth magnetism vehicle checker main part is wired is connected, its power supply and control mouth and institute
State power supply and control the delivery outlet of circuit is wired to be connected；The input port and the earth magnetism vehicle checker master of the power supply and control circuit
The power supply and control interface of body portion are wired to be connected.
Further, the sound transducer, refers to the acoustoelectric sensor part that can be received and changed to sound wave；Again
Further, the sound transducer, is piezoelectric ceramic type audio sensor, thin film capacitor type audio sensor, polypropylene pressure
Electroelectret film acoustoelectric sensor, metal tape electromagnetic type audio sensor, electret capacitor type audio sensor or its correlation
Manufactured goods；The manufactured goods, including：Microphone, miaow head, microphone or sound pick-up.
The photoelectric sensor, refers to the photoelectric device that can be received and changed to light wave；Yet further, the light
Electric transducer, refers to inner photoeffect device or photovoltaic effect device, including：Photo resistance, photodiode, photosensitive three
Pole pipe or photocell.
The range sensor, refer to can with the sensor of measurement distance, including：Ultrasonic distance-measuring sensor, Laser Measuring
Away from sensor, infrared distance measuring sensor, 24GHZ radar sensors；
The proximity transducer, refers to the mobile letter that object will be detected in the way of being detected without contact detection object
Breath and existence information are converted to the sensor of electric signal, including：Higher-order of oscillation type, capacitor type, induced electricity bridge type, permanent magnet
Type or Hall effect type proximity transducer.
Compared with the existing technology compared with a kind of mechanism for improving earth magnetism vehicle checker accuracy rate of the utility model, with following skill
Art effect：1. on the basis of Geomagnetic signal treatment mechanism, by introducing other turnover in reasonable time point and spatial point fusion
Car characteristic signal, in the boundary strip of vehicle detection, there is more three-dimensional dimension, more rich details, more perfect judgement processing
Mechanism and means, further can eliminate or reduce the adjacent produced interference erroneous judgement of left and right vehicle；2. for existing on road
Various complicated vehicles and parking condition, filled up Geomagnetic signal it is not enough produced by breach leak, be that system and product are bigger
Area popularization and application create condition；3. the utility model is in addition to the controllable multiple source syncretizing mechanism of a set of power consumption is established,
A set of detecting fault treatment mechanism has been also set up, has made the fault-tolerant power of product stronger, engineering project follow-up maintenance cost is greatly reduced.
Brief description of the drawings
Fig. 1 is a kind of principle schematic diagram for the mechanism for improving earth magnetism vehicle checker accuracy rate of the utility model.
Embodiment
Such as Fig. 1, a kind of mechanism for improving earth magnetism vehicle checker accuracy rate of the utility model, including：Earth magnetism vehicle checker main part
Divide 01 with improving expansion 02；The earth magnetism vehicle checker main part 01 refers to existing earth magnetism vehicle checker, can pass through interface
Other turnover car characteristic signals are collected to optimize processing；The interface is：Signal input interface, power supply and control connect
Mouthful；The improvement expansion 02, including：Other turnover car characteristic signal sensors 021, signal conditioning circuit and/or A/D turn
Change circuit 022, power supply and control circuit 023；Described its sensor interface of signal conditioning circuit and/or A/D change-over circuit 022 with
Other turnover car characteristic signal sensors 021 are wired to be connected, its signal output and the earth magnetism vehicle checker main part
01 signal input interface is wired to be connected, its power supply and control mouth and the wired phase of delivery outlet of the power supply and control circuit 023
Even；The input port and the power supply and control interface of the earth magnetism vehicle checker main part 01 of the power supply and control circuit 023 have
Line is connected.
Other turnover car characteristic signal sensors 021, including：Sound transducer, photoelectric sensor, range sensor
Or one of which or the multinomial combination of proximity transducer.Before and after vehicle is reached, the low frequency noise meeting produced by vehicle motor
Larger fluctuation is produced to sound field around vehicle checker, this obvious fluctuation is easily detected and recognized, therefore believed using sound
Number be conducive to improving without car to the recognition accuracy for having car；Similarly, before and after leaving in vehicle, light field around vehicle checker is produced compared with
Big fluctuation, this obvious change is easily detected and recognized, therefore is conducive to improving car to without car using optical signal
Recognition accuracy.Thus, as a kind of preferred compositions, the present embodiment selects sound transducer and photoelectric sensor.
Signal conditioning circuit and/or the A/D change-over circuit 022, is for other turnover car characteristic signal sensings
Device 021, i.e. electret capacitor microphone and photronic use characteristic and design original audio signal and photosignal
Convert the pretreatment circuit that data acquisition desired signal is carried out for ease of the earth magnetism vehicle checker main part 01.Signal condition mistake
Journey, be original audio signal is amplified, filtering process, adaptation processing is then carried out to original photosignal；Whenever, institute
State earth magnetism vehicle checker main part 01 can by the power supply and control 023 pair of signal conditioning circuit of circuit and/or
The work of the appropriate section of A/D change-over circuits 022 is controlled；If needed for having been carried in the earth magnetism vehicle checker main part 01
A/D change-over circuits, then without A/D change-over circuits in signal conditioning circuit and/or the A/D change-over circuit 022.
The power supply and control circuit 023, refer to the earth magnetism vehicle checker main part 01 need collection it is described it is other enter
When going out car characteristic signal 021 data of sensor, to the circuit for controlling appropriate section to work.
The sound transducer, can be received and electricity conversion to sound wave, including：It is piezoelectric ceramic type audio sensor, thin
Membrane capacitance formula audio sensor, polypropylene piezo-electric electret thin film acoustoelectric sensor, metal tape electromagnetic type audio sensor, electret
Body capacitance formula audio sensor or its related manufactured goods；The manufactured goods, including：Microphone, miaow head, microphone or sound pick-up.Make
To be optimal, it is easy to the electret capacitor microphone that product is integrated and cost performance is high from compact so that the earth magnetism car
Inspection device main part 01 can collect acoustic-electric data.
The photoelectric sensor, refers to inner photoeffect device or photovoltaic effect device, including：Photo resistance, light
Quick diode, phototriode or photocell.Because the bigger signal of light-receiving area is more stable, and dynamic range is also larger, as
It is optimal, from photocell so that the earth magnetism vehicle checker main part 01 can collect photooptical data.
A kind of mechanism for improving earth magnetism vehicle checker accuracy rate of the present embodiment, its operation principle is further described as follows：
The timing acquiring of earth magnetism vehicle checker main part 01 and record geomagnetic data and other turnover car characteristic signal sensors
Acoustic-electric data and photooptical data produced by 021；Under normal circumstances, vehicles while passing can cause geomagnetic data to have ripple by a relatively large margin
It is dynamic, need not now it use acoustic-electric data and photooptical data to obtain the recognition result of the high degree of accuracy；Under abnormal conditions, for example
The vehicle in side berth is to the ground magnetic influence produced by this parking stall (no car), and the vehicle on this berth in the adjacent berth in left and right
Because metal ingredient is few or lack of standardization stop causes disturbance of magnetic field few, these all embody a concentrated reflection of the ground magnetic number caused by vehicles while passing
It is not big enough according to fluctuating range, and in the range of error is easily determined, then need fusion to use acoustic-electric data and photooptical data, tool
Body is：When geomagnetic data is stablized relatively, earth magnetism vehicle checker main part 01 passes through power supply and control using power supply and control interface
Circuit 023 processed enables signal conditioning circuit and/or A/D change-over circuits 022, is passed to collect other turnover car characteristic signals
Acoustic-electric data and photooptical data produced by sensor 021, for without car to there is car judgement, if acoustic-electric data have ripple by a relatively large margin
Dynamic, then emphasis with reference to acoustic-electric data, prove by other data, otherwise simple to be analyzed using geomagnetic data；For there is car to sentence to without car
Disconnected, if photooptical data has fluctuation by a relatively large margin, emphasis with reference to photooptical data, prove by other data, otherwise simple to use ground
Magnetic data is analyzed；Under extreme case, if the acoustic-electric data and photooptical data caused by vehicles while passing have fluctuation by a relatively large margin,
And geomagnetic data fluctuating range very little is even close to zero, then earth magnetism vehicle checker main part 01 can decide whether according to the order of severity
Start respective handling, to greatly shorten the self- recoverage time of earth magnetism sensing element failure.
Claims (7)
1. a kind of mechanism for improving earth magnetism vehicle checker accuracy rate, it is characterised in that including：Earth magnetism vehicle checker main part is with improving
Expansion；The earth magnetism vehicle checker main part refers to existing earth magnetism vehicle checker, can be collected by interface it is other enter
Go out car characteristic signal to optimize processing；The interface is：Signal input interface, power supply and control interface；Described improve is expanded
Part is opened up, including：Other turnover car characteristic signal sensors, signal conditioning circuit and/or A/D change-over circuits, power supply and control
Circuit；Other turnover car characteristic signal sensors, including：Sound transducer, photoelectric sensor, range sensor or close
The one of which of sensor or multinomial combination；Signal conditioning circuit and/or the A/D change-over circuit, be for it is described it is other enter
What is gone out the use characteristic of car characteristic signal sensor and design converts primary signal for ease of the earth magnetism vehicle checker main part
Divide the pretreatment circuit for carrying out data acquisition desired signal；The power supply and control circuit, refer to the earth magnetism vehicle checker main body
When part needs to gather other turnover car characteristic signal sensing datas, to the circuit for controlling appropriate section to work；Institute
State signal conditioning circuit and/or its sensor interface of A/D change-over circuits and other turnover car characteristic signal sensors are wired
Be connected, its signal output with the signal input interface of the earth magnetism vehicle checker main part is wired is connected, its power supply and control
Mouthful wired it is connected with the delivery outlet of the power supply and control circuit；The input port and the earth magnetism car of the power supply and control circuit
The power supply and control interface for examining device main part are wired connected.
2. a kind of mechanism for improving earth magnetism vehicle checker accuracy rate as claimed in claim 1, it is characterised in that：The sound sensor
Device, refers to the acoustoelectric sensor part that can be received and changed to sound wave.
3. a kind of mechanism for improving earth magnetism vehicle checker accuracy rate as claimed in claim 2, it is characterised in that：The sound sensor
Device, including：Piezoelectric ceramic type audio sensor, thin film capacitor type audio sensor, polypropylene piezo-electric electret thin film acoustic-electric are passed
Sensor, metal tape electromagnetic type audio sensor, electret capacitor type audio sensor or its related manufactured goods；The manufactured goods,
Including：Microphone, miaow head, microphone or sound pick-up.
4. a kind of mechanism for improving earth magnetism vehicle checker accuracy rate as claimed in claim 1, it is characterised in that：The photoelectric sensing
Device, refers to the photoelectric device that can be received and changed to light wave.
5. a kind of mechanism for improving earth magnetism vehicle checker accuracy rate as claimed in claim 4, it is characterised in that：The photoelectric sensing
Device, refers to inner photoeffect device or photovoltaic effect device, including：Photo resistance, photodiode, phototriode or
Photocell.
6. a kind of mechanism for improving earth magnetism vehicle checker accuracy rate as claimed in claim 1, it is characterised in that：The Distance-sensing
Device, refer to can with the sensor of measurement distance, including：Ultrasonic distance-measuring sensor, laser range sensor, infrared distance measuring are passed
Sensor, 24GHZ radar sensors.
7. a kind of mechanism for improving earth magnetism vehicle checker accuracy rate as claimed in claim 1, it is characterised in that：The close sensing
Device, refers to the mobile message and existence information that detect object are converted into electricity in the way of being detected without contact detection object
The sensor of gas signal, including：Higher-order of oscillation type, capacitor type, induced electricity bridge type, permanent-magnet type or Hall effect type are close to be passed
Sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720109042.8U CN206421575U (en) | 2017-01-26 | 2017-01-26 | Mechanism for improving accuracy of geomagnetic vehicle detector |
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| CN201720109042.8U CN206421575U (en) | 2017-01-26 | 2017-01-26 | Mechanism for improving accuracy of geomagnetic vehicle detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710238A (en) * | 2017-01-26 | 2017-05-24 | 深圳市迅朗科技有限公司 | Mechanism and method for improving accuracy of geomagnetic vehicle detector |
| CN107730976A (en) * | 2017-09-19 | 2018-02-23 | 深圳云停智能交通技术研究院有限公司 | A kind of earth magnetism wagon detector jamproof system and method |
-
2017
- 2017-01-26 CN CN201720109042.8U patent/CN206421575U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710238A (en) * | 2017-01-26 | 2017-05-24 | 深圳市迅朗科技有限公司 | Mechanism and method for improving accuracy of geomagnetic vehicle detector |
| CN106710238B (en) * | 2017-01-26 | 2023-09-05 | 深圳市迅朗科技有限公司 | Method for improving accuracy of geomagnetic vehicle detector |
| CN107730976A (en) * | 2017-09-19 | 2018-02-23 | 深圳云停智能交通技术研究院有限公司 | A kind of earth magnetism wagon detector jamproof system and method |
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