CN2870035Y - Geographic ring-coil and its oscillation circuit and parking site detecting system - Google Patents
Geographic ring-coil and its oscillation circuit and parking site detecting system Download PDFInfo
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- CN2870035Y CN2870035Y CN 200620022773 CN200620022773U CN2870035Y CN 2870035 Y CN2870035 Y CN 2870035Y CN 200620022773 CN200620022773 CN 200620022773 CN 200620022773 U CN200620022773 U CN 200620022773U CN 2870035 Y CN2870035 Y CN 2870035Y
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Abstract
This utility model discloses a buried coil comprising a cable with the following character: said two cables is circled to be a coil structure around an axis; the front end of one cable is connected with the rear end of another cable; said buried circular coil is favorable to form a transformer to generate a frequency oscillating circuit. This utility model is also to provide an oscillating circuit which is able to form two way elementary oscillating units by the feature of buried rings, favorable to make the oscillating circuit to create steady oscillating frequency. This utility model is also to provide a parking test system to define parking position correctly for 100% accuracy rate.
Description
Technical field
The utility model relates to toroid winding inductance element and frequency detecting technology, and particularly a kind of buried toroid winding comprises this buried toroidal oscillatory circuit, and the parking stall detection system that adopts this oscillatory circuit.
Background technology
Various wagon detectors are arranged at present, be used for detecting and have or not vehicle, travel direction or traffic statistics etc., these all are widely used in road traffic supervision, highway toll and parking lot management aspect.Be embedded in ground toroid winding induction and detection method is useful, useful infrared detection, useful ultrasonic listening, perhaps rely on the contact mechanical hook-up of wheel pressure and dead weight folding etc.The shortcoming of using mechanical hook-up to exist is, because operated by rotary motion at ground surface, takes up room and destroyed easily, so serviceable life and reliability are all good inadequately.Use infrared detection, mainly whether interdicted and judge and have or not vehicle, but disturbed by artificial or external interference thing easily by vehicle according to light, cause detect inaccurate.Use ultrasonic listening, if at the detection of a plurality of fixedly parking stalls, the expense of being brought also is very expensive.Employing is embedded in the induction of ground toroid winding and detects principle and be: vehicle by the time toroid winding inductance that is embedded on the road surface under change, and the oscillatory circuit frequency is changed, this delivers to data processing unit again through processing after changing after testing element testing.And some employings at present are embedded in ground toroid winding sensor detector generally all at mobile vehicle detection, the toroid winding that is adopted generally is the solid wire coiling, as shown in Figure 1, oscillation frequency generation circuit that the coil that makes in this way constitutes and treatment circuit be more complicated all.And the utility model is just to present toroidal coil structure significant improvement in addition, and adopts new frequency oscillation circuit.
The utility model content
The utility model provides a kind of improved buried toroid winding at defective that exists in the prior art or deficiency, adopts this buried toroid winding to help constituting mutual inductor and produces frequency oscillation circuit.
The utility model also provides a kind of above-mentioned buried toroidal oscillatory circuit that comprises, and this oscillatory circuit can utilize buried toroidal characteristics, forms two-way fundamental oscillation unit, helps making this oscillatory circuit to produce stable oscillation frequency.
The utility model also provides a kind of parking stall detection system that comprises above-mentioned oscillatory circuit, adopting this parking stall detection system whether to have parked vehicle to the parking stall detects accurately, and, can make and detect the rate of accuracy reached to 100% that has or not vehicle by further perfect.
The technical solution of the utility model is as follows:
Buried toroid winding comprises cable, it is characterized in that: described cable is two, and these two cables form the loop construction that parallel ring is around in same axle center, and wherein the rear end of one front end and another root links together.
Described cable is formed by concentric cable or 2 line parallel coilings.If direct employing concentric cable, one in two cables is coaxial cable shielding layer, and another root is a coaxial cable core wire.
The coiling number of turns of described loop construction is 1 circle or 2 circles.
The shape of described loop construction is square circular or oval.
Oscillatory circuit, it is characterized in that: comprise above-mentioned buried toroid winding, two cables in this buried toroid winding constitute two-way fundamental oscillation unit with two electric capacity respectively, and the output signal of this two-way fundamental oscillation unit is capacitively coupled to the circuit and square-wave with frequency output terminal respectively.
Described circuit and square-wave comprises two field effect transistor, the corresponding respectively output signal that receives two-way fundamental oscillation unit of the grid of these two field effect transistor.
The parking stall detection system, it is characterized in that: comprise having above-mentioned buried toroidal oscillatory circuit, this oscillatory circuit connects the filter shape amplifying circuit, and this filter shape amplifying circuit connects the MCU signal processing unit, and this MCU signal processing unit connects display unit.
Technique effect of the present utility model is as follows:
Because buried toroid winding of the present utility model has adopted the two-wire winding structure, has used the mutual inductance principle, therefore, adopts this buried toroid winding to help constituting mutual inductor and produces frequency oscillation circuit.
Owing to adopted concentric cable, make that this buried toroidal coil structure is more simple, be easy to make.
Because oscillatory circuit of the present utility model, utilize above-mentioned buried toroidal two-wire winding structure, form two-way fundamental oscillation unit, two of two-wire winding cables constitute 1 basic mutual inductor like this, utilize 2 mutual inductances between the cable to constitute feedback circuit, help making this oscillatory circuit to produce stable oscillation frequency.
Because parking stall of the present utility model detection system has been utilized above-mentioned buried toroidal two-wire winding structure and simple oscillatory circuit thereof, can effectively prevent interference such as temperature, humidity, noise, dependable performance, wiring is easy; Can widespread adoption in open parking lot to vehicle detection with go into out the differentiation of car, the parking lot can be controlled separately each parking stall; This wagon detector can reach 100% accuracy rate to vehicle detection.
Description of drawings
Fig. 1 is a toroidal coil structure of the prior art.
Fig. 2 is a buried toroidal coil structure synoptic diagram of the present utility model.
Fig. 3 is an oscillatory circuit structural principle synoptic diagram of the present utility model.
Fig. 4 is a parking stall of the present utility model detection system structured flowchart.
Reference numeral lists as follows:
The buried toroid winding of 1-, 2-frequency generating circuit, 3-frequency filtering amplifying circuit, 4-MCU signal processing unit, the 5-display unit, M-coaxial cable shielding layer, the front end of M1-cable M, the rear end of M2-cable M, the N-coaxial cable core wire, the front end of N1-cable N, the rear end of N2-cable N.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
From Fig. 1 and Fig. 2 more as can be seen, toroidal coil structure of the prior art is generally formed by the solid wire coiling, and buried toroid winding of the present utility model, adopted the two-wire winding structure, used the mutual inductance principle, therefore, adopt this buried toroid winding to help constituting mutual inductor and produce frequency oscillation circuit.As shown in Figure 2, buried toroid winding of the present utility model is formed by concentric cable or 2 line parallel coilings.Wherein M is a cable, and N is another root cable.M1 is the front end of cable M, and M2 is the rear end of cable M, and N1 is the front end of cable N, and N2 is the rear end of cable N.If directly adopt concentric cable, then M is a coaxial cable shielding layer, and N is a coaxial cable core wire.When coil stationary, need be crimped on M2 and N1 together.1 meter of 1 meter * of the general coiled square structure of the used annular ground buried coil of the utility model turns to circle or ellipse also can.The coiling number of turns: 1-2 circle.
Oscillatory circuit structural principle of the present utility model as shown in Figure 3, this circuit adopts the balancing circuitry structure.Wherein M is a cable, and N is another root cable.M1 is the front end of cable M, and M2 is the rear end of cable M, and N1 is the front end of cable N, and N2 is the rear end of cable N.If directly adopt concentric cable, then M is a coaxial cable shielding layer, and N is a coaxial cable core wire.C1, C2, C3, C4 are electric capacity, and wherein C1, C2 constitute the fundamental oscillation unit with coil respectively, and C3, C4 are coupling capacitances, play the effect of handing over every straight-through; R1, R2, R3 are resistance; Q1, Q2 are field effect transistor (FET), play the copped wave shaping operation, square wave output.FREQ is a frequency output terminal.
As parking stall of the present utility model detection system, specific implementation process is described below: according to fixedly connected this buried toroid winding of Fig. 2, wherein M2 and N1 are crimped on together, according to the map analysis of Fig. 3 circuit theory as can be seen: constitute the fundamental oscillation unit by cable M and C1, constitute another this vibration of roadbed unit by cable N and C2, output signal is handed on the grid G of Q1 every straight-through by C3, and another road that is made of cable M and C1 outputs to by C4 on the grid G of Q2, and principle is identical.Because the mutual inductance coupling between the coil that these 2 cables of M and N form produces induced electromotive force and forms the circuit positive feedback, make N2 end and M1 end all export stable sine waveform, sine waveform removes flip-flop by C3 and C4, the sine wave of AC portion is delivered to the G end of Q1 and Q2, by the FET pipe, at FREQ end output square wave.This square wave has stable oscillation frequency.When stoppage of vehicle is on this coil, the square wave frequency of FREQ end output will increase.As seen in Figure 4, the above-mentioned square wave that the frequency generating circuit 2 that is made of two-wire parallel cable toroid winding 1 produces, delivering to MCU signal processing unit 4 after these square wave process filtering shaping amplification circuit 3 processing, obtain into car frequency threshold values, go out car frequency threshold values, empty wagons frequency values and stable value and wait the car of coming in and going out to differentiate through the software fuzzy algorithm, and can carry out from motion tracking and correction the frequency anomaly variation that Yin Wendu, humidity and other disturbance factors cause.Handle through above-mentioned software and hardware, monolithic processor MCU just can export and have or not the car signal, and is shown by display unit 5, and makes control corresponding output according to going into car and going out car.
In a word, the utility model proposes a kind of new buried toroid winding and new parking stall detection mode, be mainly used in the differentiation that the fixing parking lot vehicle detection of parking stall has or not and go into out car.This new parking stall detection mode principal character is: the toroid winding that utilizes the paired cable parallel winded to make, paired cable both can be made by oneself, also can directly adopt concentric cable; Constitute mutual inductor by this toroid winding and produce frequency oscillation circuit.Toroid winding by this two-wire parallel winded utilizes 2 mutual inductance principles between the cable to constitute the fundamental oscillation circuit, as stoppage of vehicle on coil, change the inductance of coil, increase the coefficient of mutual inductance between toroidal 2 cables, cause the frequency of this oscillatory circuit to change, frequency signal is delivered to single-chip microcomputer MPU through filtering and amplifying circuit carry out signal Processing and just can go out having or not of vehicle according to the change-detection of frequency.Provide reliable guarantee for implementing this scheme especially and directly adopt concentric cable to make this toroid winding.
The toroid winding that this parking stall detection mode utilizes concentric cable or similar two-wire parallel cable to make is embedded in ground surface, constitute 1 this vibration of roadbed unit by 1 cable in this two-wire winding and capacitor C, and constitute 1 this vibration of roadbed unit in addition by in addition 1 cable and the capacitor C in this two-wire winding, when this two-wire winding during in wiring, the head of 1 cable is connected together with other tail of 1 cable, as Fig. 2, two of two-wire winding cables constitute 1 basic mutual inductor like this, utilize 2 mutual inductances between the cable to constitute feedback circuit, make this oscillatory circuit produce stable oscillation frequency.When stoppage of vehicle is on coil, the inductance of coil changes, increase the coefficient of mutual inductance between toroidal 2 cables, thereby cause coil oscillatory circuit frequency change, this frequency is delivered to the single-chip microprocessor MCU processing enter obtain into car frequency threshold values, go out car frequency threshold values, empty wagons frequency values and stable value and wait the car of coming in and going out to differentiate, and can carry out from motion tracking and correction the ANOMALOUS VARIATIONS that Yin Wendu, humidity and other disturbance factors cause through the software fuzzy algorithm.
Should be pointed out that the above embodiment can make those skilled in the art more fully understand the utility model, but limit the utility model never in any form.Therefore, although this instructions has been described in detail the utility model with reference to drawings and Examples,, it will be appreciated by those skilled in the art that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the middle of the protection domain of the utility model patent.
Claims (7)
1. buried toroid winding comprises cable, it is characterized in that: described cable is two, and these two cables form the loop construction that parallel ring is around in same axle center, and wherein the rear end of one front end and another root links together.
2. buried toroid winding according to claim 1 is characterized in that: described cable directly adopts concentric cable, and one in described two cables is coaxial cable shielding layer, and another root is a coaxial cable core wire.
3. buried toroid winding according to claim 1 is characterized in that: the coiling number of turns of described loop construction is 1 circle or 2 circles.
4. according to the described buried toroid winding of one of claim 1-3, it is characterized in that: the shape of described loop construction is square circular or oval.
5. oscillatory circuit, it is characterized in that: comprise above-mentioned buried toroid winding, two cables in this buried toroid winding constitute two-way fundamental oscillation unit with two electric capacity respectively, and the output signal of this two-way fundamental oscillation unit is capacitively coupled to the circuit and square-wave with frequency output terminal respectively.
6. oscillatory circuit according to claim 5 is characterized in that: described circuit and square-wave comprises two field effect transistor, the corresponding respectively output signal that receives two-way fundamental oscillation unit of the grid of these two field effect transistor.
7. parking stall detection system, it is characterized in that: comprise having above-mentioned buried toroidal oscillatory circuit, this oscillatory circuit connects the filter shape amplifying circuit, and this filter shape amplifying circuit connects the MCU signal processing unit, and this MCU signal processing unit connects display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022773 CN2870035Y (en) | 2006-02-15 | 2006-02-15 | Geographic ring-coil and its oscillation circuit and parking site detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022773 CN2870035Y (en) | 2006-02-15 | 2006-02-15 | Geographic ring-coil and its oscillation circuit and parking site detecting system |
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| Publication Number | Publication Date |
|---|---|
| CN2870035Y true CN2870035Y (en) | 2007-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620022773 Expired - Fee Related CN2870035Y (en) | 2006-02-15 | 2006-02-15 | Geographic ring-coil and its oscillation circuit and parking site detecting system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102750828A (en) * | 2012-07-24 | 2012-10-24 | 苏州工业园区七星电子有限公司 | Crossing vehicle flow monitoring system |
| CN102768368A (en) * | 2012-07-11 | 2012-11-07 | 上海澳星光电科技有限公司 | Vehicle detector circuit |
| CN103322918A (en) * | 2013-05-24 | 2013-09-25 | 陕西科技大学 | Equipment for measuring height of vehicle and measuring method thereof |
| CN104574958A (en) * | 2014-12-22 | 2015-04-29 | 深圳市捷顺科技实业股份有限公司 | Vehicle detection method and device |
| CN105162477A (en) * | 2015-09-30 | 2015-12-16 | 北京交大思诺科技股份有限公司 | Transponder with expanded range of action |
| CN109416882A (en) * | 2016-07-08 | 2019-03-01 | 罗伯特·博世有限公司 | In the determination of the separate parking space in side |
-
2006
- 2006-02-15 CN CN 200620022773 patent/CN2870035Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768368A (en) * | 2012-07-11 | 2012-11-07 | 上海澳星光电科技有限公司 | Vehicle detector circuit |
| CN102750828A (en) * | 2012-07-24 | 2012-10-24 | 苏州工业园区七星电子有限公司 | Crossing vehicle flow monitoring system |
| CN103322918A (en) * | 2013-05-24 | 2013-09-25 | 陕西科技大学 | Equipment for measuring height of vehicle and measuring method thereof |
| CN103322918B (en) * | 2013-05-24 | 2016-01-20 | 陕西科技大学 | The equipment of measuring vehicle height and measuring method thereof |
| CN104574958A (en) * | 2014-12-22 | 2015-04-29 | 深圳市捷顺科技实业股份有限公司 | Vehicle detection method and device |
| CN105162477A (en) * | 2015-09-30 | 2015-12-16 | 北京交大思诺科技股份有限公司 | Transponder with expanded range of action |
| CN105162477B (en) * | 2015-09-30 | 2018-06-12 | 北京交大思诺科技股份有限公司 | A kind of transponder for extending sphere of action |
| CN109416882A (en) * | 2016-07-08 | 2019-03-01 | 罗伯特·博世有限公司 | In the determination of the separate parking space in side |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070214 Termination date: 20110215 |