CN203644223U - Parking space detection apparatus - Google Patents
Parking space detection apparatus Download PDFInfo
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- CN203644223U CN203644223U CN201320705101.XU CN201320705101U CN203644223U CN 203644223 U CN203644223 U CN 203644223U CN 201320705101 U CN201320705101 U CN 201320705101U CN 203644223 U CN203644223 U CN 203644223U
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- dependent sensor
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- 238000001514 detection method Methods 0.000 title abstract description 9
- 230000001419 dependent effect Effects 0.000 claims description 26
- 239000000463 material Substances 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model relates to a detection apparatus and discloses a parking space detection apparatus. The parking space detection apparatus comprises a magnetic sensor, a magnetic signal processing chip and a master control chip. The magnetic signal processing chip is connected with both the magnetic sensor and the master control chip, and acquires earth magnetic field signals when a vehicle passes or is parked. The magnetic sensor is a single-axis magnetic sensor, and is placed with the axial direction of the magnetic sensor being perpendicular to the ground of a parking space. Compared with the prior art, the parking space detection apparatus helps to reduce the material cost thereof.
Description
Technical field
The utility model relates to pick-up unit, particularly stall testing apparatus.
Background technology
Geomagnetic parking stall pick-up unit is a kind of conventional vehicle detection apparatus.The earth exists magnetic field, and changes of magnetic field value is smaller under normal circumstances.The metal construction of vehicle is more, in the time that vehicle passes through or berths, can produce larger impact to magnetic field of the earth, cause magnetic field value to change.Geomagnetic parking stall pick-up unit changes to have judged whether storing cycle by detecting magnetic field of the earth exactly.The parts that detect terrestrial magnetic field variation are geomagnetic sensors.
At present, the geomagnetic sensor in geomagnetic parking stall pick-up unit is generally three axle geomagnetic sensors, and in the time that vehicle passes through or berths, the terrestrial magnetic field in three directions of detection space changes.
But, find after deliberation, in the time that vehicle passes through or berths, the terrestrial magnetic field relative value of X-direction, Y direction changes very little, and as shown in Figure 1, and the magnetic field relative value of Z-direction changes comparatively speaking greatly, as shown in Figure 2.Wherein, X-axis is parallel to the minor face on parking stall, and Y-axis is parallel to the long limit on parking stall, and Z axis is perpendicular to XY plane.The terrestrial magnetic field of X-direction, Y direction changes very little to the contribution of earth magnetism stall testing apparatus, use three axle geomagnetic sensors both to increase the Material Cost of geomagnetic parking stall pick-up unit, extend again the response time of device, shortened the life-span (consume unnecessary electric weight and process unnecessary terrestrial magnetic field signal) of power supply simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of stall testing apparatus, has made to reduce the Material Cost of stall testing apparatus.
For solving the problems of the technologies described above, the utility model provides a kind of stall testing apparatus, comprises magneto-dependent sensor, magnetosensitive signal processing chip and main control chip; Described magnetosensitive signal processing chip is all connected with described magneto-dependent sensor, described main control chip; Described magneto-dependent sensor vehicle through or field signal locality while berthing; It is characterized in that, described magneto-dependent sensor is uniaxial magnetic dependent sensor, and put on the ground that is axially perpendicular to parking stall.
The utility model embodiment in terms of existing technologies, magneto-dependent sensor is uniaxial magnetic dependent sensor, and put on the ground that is axially perpendicular to parking stall, in the time that vehicle passes through or berths, only gather perpendicular to the terrestrial magnetic field signal in the direction of ground, parking stall, and export the terrestrial magnetic field signal of collection to magnetosensitive signal processing chip; Magnetosensitive signal processing chip carries out signal condition and analog to digital conversion to the terrestrial magnetic field signal receiving, and the digital signal after conversion is sent to main control chip by specific interface; Main control chip is processed the digital signal receiving, and judges on parking stall, whether to stop to have vehicle.In the utility model, stall testing apparatus adopts the uniaxial magnetic dependent sensor of vertically putting, and has made to reduce the Material Cost of stall testing apparatus.
In addition, uniaxial magnetic dependent sensor is single shaft geomagnetic sensor, for detection of the changes of magnetic field of Z-direction.Because single shaft geomagnetic sensor is existing ripe device, guarantee the feasibility of the utility model embodiment.
In addition, also comprise power supply and clock module.Power supply and clock module provide power supply and clock signal for magnetosensitive signal processing chip.Because power supply and clock module are existing ripe devices, guarantee the feasibility of the utility model embodiment.
Accompanying drawing explanation
Fig. 1 be according to vehicle in prior art through or the terrestrial magnetic field relative value schematic diagram over time of terrestrial magnetic field X, Y-axis while berthing;
Fig. 2 be according to vehicle in prior art through or the terrestrial magnetic field relative value schematic diagram over time of terrestrial magnetic field Z-axis direction while berthing;
Fig. 3 is according to the structural representation of the stall testing apparatus in the utility model the first embodiment;
Fig. 4 is the schematic diagram of putting according to the uniaxial magnetic dependent sensor in the utility model the first embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, each embodiment of the present utility model is explained in detail.But, persons of ordinary skill in the art may appreciate that in the each embodiment of the utility model, in order to make reader understand the application better, many ins and outs are proposed.But, even without these ins and outs and the many variations based on following embodiment and modification, also can realize the each claim of the application technical scheme required for protection.
The first embodiment of the present utility model relates to a kind of stall testing apparatus, and as shown in Figure 3, this stall testing apparatus comprises magneto-dependent sensor, magnetosensitive signal processing chip, main control chip, power supply and clock module to concrete structure.
Magnetosensitive signal processing chip is all connected with magneto-dependent sensor, main control chip, power supply and clock module; Magneto-dependent sensor vehicle through or field signal locality while berthing, power supply and clock module provide power supply and clock signal for magnetosensitive signal processing chip, wherein, clock signal has guaranteed that each device of stall testing apparatus is in synchronous regime.
The terrestrial magnetic field signal that magneto-dependent sensor gathers when vehicle is passed through or berthed exports magnetosensitive signal processing chip to; Magnetosensitive signal processing chip carries out signal condition and analog to digital conversion to the terrestrial magnetic field signal receiving, and the digital signal after conversion is sent to main control chip by specific interface.
Main control chip is processed the digital signal receiving, and judges on parking stall, whether to stop to have vehicle.
In the utility model, magneto-dependent sensor is uniaxial magnetic dependent sensor, and the ground that is axially perpendicular to parking stall puts, as shown in Figure 4.This be because, in the time that vehicle passes through or berths, the terrestrial magnetic field relative value of X-direction, Y direction changes very little, and the magnetic field relative value of Z-direction changes comparatively speaking greatly, and the terrestrial magnetic field of X-direction, Y direction changes very little to the contribution of stall testing apparatus.The terrestrial magnetic field that the magneto-dependent sensor of stall testing apparatus only gathers Z-direction changes the function that just can complete detection parking stall.This that is to say, the magneto-dependent sensor of stall testing apparatus adopts uniaxial magnetic dependent sensor, and put on the ground that is axially perpendicular to parking stall.Like this, made to reduce the Material Cost of stall testing apparatus.
In addition, because this stall testing apparatus only gathers and process the terrestrial magnetic field signal of Z-direction, shortened the response time of device, and extended the life-span of power supply.
The second embodiment of the present utility model relates to a kind of parking stall measure assembling device.The second embodiment and the first embodiment are roughly the same, and key distinction part is: in the first embodiment, locality field signal is uniaxial magnetic dependent sensor; And in the second embodiment, locality field signal is single shaft geomagnetic sensor.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above are to realize specific embodiment of the utility model, and in actual applications, can do various changes to it in the form and details, and do not depart from spirit and scope of the present utility model.
Claims (3)
1. a stall testing apparatus, comprises magneto-dependent sensor, magnetosensitive signal processing chip and main control chip; Described magnetosensitive signal processing chip is all connected with described magneto-dependent sensor, described main control chip; Described magneto-dependent sensor vehicle through or field signal locality while berthing; It is characterized in that, described magneto-dependent sensor is uniaxial magnetic dependent sensor, and put on the ground that is axially perpendicular to parking stall.
2. stall testing apparatus according to claim 1, is characterized in that, described uniaxial magnetic dependent sensor is single shaft geomagnetic sensor.
3. stall testing apparatus according to claim 1, is characterized in that, also comprises power supply and clock module;
Described power supply and clock module are connected with described magnetosensitive signal processing chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320705101.XU CN203644223U (en) | 2013-11-08 | 2013-11-08 | Parking space detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320705101.XU CN203644223U (en) | 2013-11-08 | 2013-11-08 | Parking space detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203644223U true CN203644223U (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320705101.XU Expired - Lifetime CN203644223U (en) | 2013-11-08 | 2013-11-08 | Parking space detection apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN203644223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108986482A (en) * | 2018-07-05 | 2018-12-11 | 南京理工大学 | A kind of vehicle checking method based on uniaxial geomagnetic sensor |
-
2013
- 2013-11-08 CN CN201320705101.XU patent/CN203644223U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108986482A (en) * | 2018-07-05 | 2018-12-11 | 南京理工大学 | A kind of vehicle checking method based on uniaxial geomagnetic sensor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
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| CX01 | Expiry of patent term |