CN216117665U - Correlation type receiving mechanism of vehicle speed detection device for tail gas remote measurement - Google Patents
Correlation type receiving mechanism of vehicle speed detection device for tail gas remote measurement Download PDFInfo
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- CN216117665U CN216117665U CN202122652965.7U CN202122652965U CN216117665U CN 216117665 U CN216117665 U CN 216117665U CN 202122652965 U CN202122652965 U CN 202122652965U CN 216117665 U CN216117665 U CN 216117665U
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Abstract
The utility model discloses a correlation receiving mechanism of a vehicle speed detection device for tail gas remote measurement, which comprises a light-shielding device and a photoelectric conversion circuit, wherein a narrow-band filter is arranged at the front end of the light-shielding device, and a plurality of narrow-band filters form an array; the rear end of the light-avoiding device is provided with a photoelectric detector, and a plurality of photoelectric detectors form an array; and the photoelectric detectors are electrically connected with the photoelectric conversion circuit. The correlation formula receiving mechanism of this structure can effectively avoid factors such as natural light change, road surface vibrations, ambient temperature change to the influence of speed of a motor vehicle measurement, has improved the accuracy and the reliability that the speed of a motor vehicle detected greatly, and the structural design who optimizes simultaneously has improved the convenience and the stability of operation, and then has improved whole tail gas remote sensing system's data quality.
Description
Technical Field
The utility model relates to the field of optical, mechanical and electrical integration equipment, in particular to a correlation type receiving mechanism for vehicle speed detection.
Background
The remote measurement of tail gas of motor vehicle is a method capable of detecting pollutant discharged from vehicle in normal running of vehicle, in order to realize validity judgment of remote measurement data and dynamic correction of remote measurement algorithm, the speed and acceleration of the detected vehicle are all detected, and the existing vehicle speed detection equipment has the problems of low vehicle speed detection precision and easy influence of road vibration and natural light.
SUMMERY OF THE UTILITY MODEL
The utility model solves the technical problem of avoiding the influence of natural light change, road vibration, environmental temperature change and the like on vehicle speed measurement and improving the accuracy and reliability of vehicle speed detection.
The technical scheme adopted by the utility model is as follows: a correlation type receiving mechanism of a vehicle speed detection device for tail gas remote measurement comprises a light-shielding device and a photoelectric conversion circuit, wherein a narrow-band filter is arranged at the front end of the light-shielding device, and a plurality of narrow-band filters form an array; the rear end of the light-avoiding device is provided with a photoelectric detector, and a plurality of photoelectric detectors form an array; and the photoelectric detectors are electrically connected with the photoelectric conversion circuit.
As a further improvement of the present invention, the narrow band filter corresponds to a photodetector.
As a further development of the utility model, the narrowband filter is equipped with a protective lens.
As a further improvement of the utility model, the photoelectric conversion device is also provided with a working indicator light which is electrically connected with the photoelectric conversion circuit.
As a further improvement of the utility model, the work indicator has a longer pin.
As a further improvement of the utility model, the light-shielding device is provided with a deep hole for mounting the narrow-band filter and the photoelectric detector, and the depth of the deep hole is 30-60 mm.
The utility model has the following beneficial effects: the correlation formula receiving mechanism of this structure can effectively avoid factors such as natural light change, road surface vibrations, ambient temperature change to the influence of speed of a motor vehicle measurement, has improved the accuracy and the reliability that the speed of a motor vehicle detected greatly, and the structural design who optimizes simultaneously has improved the convenience and the stability of operation, and then has improved whole tail gas remote sensing system's data quality.
Drawings
FIG. 1 is a schematic view of the present invention.
Shown in the figure: 2 protective lens, 3 work pilot lamps, 4 narrow band filters, 5 light-resistant ware, 6 photoelectric detector, 7 photoelectric conversion circuit.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
As shown in the figure, the correlation receiving mechanism of the vehicle speed detection device for tail gas remote measurement comprises a light-shielding device 5 and a photoelectric conversion circuit 7, wherein a narrow-band filter 4 is arranged at the front end of the light-shielding device 5, and a plurality of narrow-band filters 4 form an array; the rear end of the light-avoiding device is provided with a photoelectric detector 6, and a plurality of photoelectric detectors 6 form an array; the photodetectors 6 are all electrically connected with the photoelectric conversion circuit 7.
Furthermore, in order to protect the narrowband filter, a protective lens is arranged at the front end of the narrowband filter, so that the narrowband filter is protected.
Further, in order to observe the working condition of the mechanism conveniently, a working indicator lamp 3 is further arranged, and the working indicator lamp 3 is electrically connected with a photoelectric conversion circuit 7. Meanwhile, in order to ensure the work of the work indicator light, the work indicator light 3 is provided with a long pin.
The narrow-band optical filter ensures that the photoelectric detector can only receive the laser with the specific wavelength emitted by the emitting unit, thereby further reducing the influence of ambient light on the measurement and improving the accuracy of the vehicle speed measurement; the photoelectric detector array expands the detectable range of the light beam, and can ensure that laser can still be incident on at least one photoelectric detector of the photoelectric detector array when a vehicle passes through the photoelectric detector array to cause small vibration of a road and further influence small deviation of a measuring laser beam, so that normal work of equipment is ensured, and the stability of the vehicle speed measuring system is improved.
Embodiment 1, when the receiving unit is placed on one side of a road for use, the receiving unit is called a correlation receiving unit and receives laser emitted from an emitting unit on the other side of the road. As shown in the figure, the correlation receiving unit is composed of a photoelectric conversion circuit 7, a photoelectric detector 6, a light-avoiding device 5, a narrow-band filter 4, a work indicator lamp 3 and a protective lens 2. The photoelectric detector 6 and the working indicator light 3 are welded on the photoelectric conversion circuit 7 and then are installed at the rear end in a setting hole of the light-avoiding device 5; the narrow-band filter 4 and the protective lens 2 are arranged in a groove at the front end of a set hole of the light-shading device 5; the work pilot lamp 3 remains longer pin during the welding so as to guarantee to install in the setting hole of light-resistant device 5 and can hug closely the protection lens 2 of front end, conveniently observes when focusing. The work indicator lamp 3 uses a high-brightness emerald LED with a diameter of 3 mm. The array formed by the narrow-band filters is formed by at least two narrow-band filters, and the center wavelength of the array is the same as or close to the laser wavelength used by the vehicle speed detection system.
The reflection type receiving mechanism for vehicle speed detection can be used in the field of tail gas remote measurement, can be applied to any field needing vehicle speed detection, and has the advantage of high anti-interference capability.
It should be understood by those skilled in the art that the protection scheme of the present invention is not limited to the above-mentioned embodiments, and various permutations, combinations and modifications can be made on the above-mentioned embodiments without departing from the spirit of the present invention, and the modifications are within the scope of the present invention.
Claims (6)
1. A correlation type receiving mechanism of a vehicle speed detection device for tail gas remote measurement is characterized by comprising a light-shielding device (5) and a photoelectric conversion circuit (7), wherein a narrow-band filter (4) is arranged at the front end of the light-shielding device (5), and a plurality of narrow-band filters (4) form an array; the rear end of the light-avoiding device is provided with a photoelectric detector (6), and a plurality of photoelectric detectors (6) form an array; the photoelectric detectors (6) are all electrically connected with the photoelectric conversion circuit (7).
2. The correlation receiver of vehicle speed detector for remote exhaust emission measurement according to claim 1, wherein the narrow band filter (4) corresponds to the photodetector (6).
3. The correlation receiver of vehicle speed detecting device for remote exhaust gas measurement according to claim 1, wherein the narrowband filter is provided with a protective lens (2).
4. The correlation type receiving mechanism of the vehicle speed detection device for the tail gas remote measurement according to claim 1 is further provided with a work indicator lamp (3), and the work indicator lamp (3) is electrically connected with the photoelectric conversion circuit (7).
5. The correlation receiver of vehicle speed detector for remote exhaust emission measurement according to claim 4, wherein the operation indicator lamp (3) has a long pin.
6. The correlation type receiving mechanism of the vehicle speed detection device for the tail gas remote measurement according to any one of claims 1 to 5, characterized in that a deep hole for installing a narrow band filter and a photoelectric detector is arranged on the light-shielding device (5), and the depth of the deep hole is 30-60 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122652965.7U CN216117665U (en) | 2021-11-02 | 2021-11-02 | Correlation type receiving mechanism of vehicle speed detection device for tail gas remote measurement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122652965.7U CN216117665U (en) | 2021-11-02 | 2021-11-02 | Correlation type receiving mechanism of vehicle speed detection device for tail gas remote measurement |
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| CN216117665U true CN216117665U (en) | 2022-03-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034879A (en) * | 2021-11-02 | 2022-02-11 | 安徽三恩光电科技有限公司 | Vehicle speed detection device for tail gas remote measurement |
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2021
- 2021-11-02 CN CN202122652965.7U patent/CN216117665U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034879A (en) * | 2021-11-02 | 2022-02-11 | 安徽三恩光电科技有限公司 | Vehicle speed detection device for tail gas remote measurement |
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