CN113281306A - Highway visibility detection device - Google Patents
Highway visibility detection device Download PDFInfo
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- CN113281306A CN113281306A CN202110629307.8A CN202110629307A CN113281306A CN 113281306 A CN113281306 A CN 113281306A CN 202110629307 A CN202110629307 A CN 202110629307A CN 113281306 A CN113281306 A CN 113281306A
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- detection device
- visible light
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- infrared
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
- G01N21/538—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke for determining atmospheric attenuation and visibility
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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Abstract
The invention relates to a highway visibility detection device, which comprises an installation shell, a detection device, a convex lens, a visible light filter and a reflecting piece, wherein the detection device, the convex lens, the visible light filter and the reflecting piece are sequentially arranged on the same straight line at intervals in sequence, the detection device is provided with a light emitter, an infrared emitter, a visible light detector and an infrared light detector which all face the convex lens, and the reflecting piece is an infrared light reflecting piece for reflecting infrared light back in the original way. Compared with the prior art, the infrared visibility calculation device has the advantages that the backward heat dissipation photon number of infrared light and the transmission photon number of infrared light can be obtained by utilizing the cooperation of the emission and the receiving of a visible light spectrum and the visible light filter, so that the backward heat dissipation photon number of the infrared light can be considered during visibility calculation, the visibility calculation accuracy is greatly improved, and the detection accuracy of the detection device is higher.
Description
Technical Field
The invention relates to the field of traffic road detection, in particular to a device for detecting the visibility of a highway.
Background
The mass fog weather is an important factor which seriously affects the traffic safety of the expressway, the harmfulness of the mass fog weather phenomenon is very large, and the statistics of relevant data of all highway traffic accidents in China show that a lot of highway traffic accidents have great relationship with the mass fog. Due to the fact that the fog clusters can cause visibility reduction, sudden visibility reduction can seriously affect driving judgment of drivers and the randomness of occurrence time and places of the fog clusters can increase the potential safety hazard of highway driving, and the defects of high highway speed, large traffic flow and full sealing of the highway often cause serious traffic accidents and serious economic loss. Therefore, the monitoring and early warning device has great significance for timely, accurately and effectively monitoring and early warning the visibility in the foggy weather.
The existing detection mode for the group fog is that a light source generating device and a light detector for receiving the light source emitted by the light source generating device are arranged on a road surface, the distance between the light source generating device and the light detector is calculated within 40cm-100m, and the visibility is detected through the emitted light source and the received light sources. However, the visibility detection device has a long optical path, and is susceptible to moisture during the transmission process to generate backscattering, which is not received by the photodetector, thereby causing inaccurate detection.
Therefore, the present inventors have made extensive studies on the above problems, and as a result, they have made the present invention.
Disclosure of Invention
The invention aims to provide an expressway visibility detection device capable of accurately detecting visibility.
To achieve the above object, the solution of the present invention is as follows: a highway visibility detection device comprises an installation shell, a detection device, a convex lens, a visible light filter and a reflecting piece, wherein the detection device is installed in the installation shell, the detection device, the convex lens, the visible light filter and the reflecting piece are sequentially arranged on the same straight line at intervals, the convex lens, the visible light filter and the reflecting piece are vertically arranged, the detection device is provided with a light emitter capable of emitting visible light, an infrared emitter capable of emitting infrared light, a visible light detector for receiving visible light and an infrared light detector for receiving infrared light, the emitting direction of the light emitter, the emitting direction of the infrared emitter, the receiving direction of the visible light detector and the receiving direction of the infrared light detector all face the convex lens, the installation shell is provided with a window for emitting and emitting light, the distance between the detection device and the convex lens is 3-10cm, the distance between the convex lens and the visible light filter is 15-25cm, the visible light filter and the reflector are arranged close to each other, and the reflector is an infrared light reflector which reflects infrared light back in the original way.
The reflecting piece is a cylinder, one surface of which facing the visible light filter is adhered with a 3MM reflecting film.
The cylinder is a prism.
The distance between the detection device and the convex lens is 5cm, the distance between the convex lens and the visible light filter is 20cm, and the visible light filter is closely matched with the reflecting piece.
The light emitter is a red light emitter, and the visible light detector is a red light detector.
The installation shell is installed on a vertical column which is vertically arranged, a transverse support is arranged at the upper end of the vertical column, the first end of the transverse support is perpendicular to one side face of the vertical column, the second end of the transverse support extends towards the vertical column in a back mode, the installation shell is installed on one side face of the vertical column and located on the same side face of the vertical column together with the transverse support, and the convex lens, the visible light filter and the light reflecting piece are all installed on the lower bottom face of the transverse support.
The solar energy power supply device is provided with a solar cell panel, a rechargeable battery and a controller, the solar cell panel is installed on the top surface of the transverse support, the rechargeable battery and the controller are installed in the installation shell, and the rechargeable battery is connected with the detection device in a power supply mode.
The upright posts are positioned below the mounting shell and provided with a red light, a yellow light and a green light.
By adopting the technical scheme, the highway visibility detection device can obtain the backward heat dissipation photon number of infrared light and the transmission photon number of the infrared light by utilizing the transmission and the receiving of visible light spectrum and the matching use of the visible light filter, so that the backward heat dissipation photon number of the infrared light can be considered during the visibility calculation, the visibility calculation accuracy is greatly improved, the detection accuracy of the detection device is higher, meanwhile, the whole device is simple in structure, easy to arrange, install and maintain, small in power consumption, capable of protecting the long-term operation of the whole device and convenient to use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a perspective view of the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
The invention relates to a highway visibility detection device, as shown in figures 1 and 2, which comprises a detection device 1, a convex lens 2, a visible light filter 3 and a reflector 4, wherein the detection device 1, the convex lens 2, the visible light filter 3 and the reflector 4 are sequentially arranged at intervals on the same straight line, the convex lens 2, the visible light filter 3 and the reflector 4 are vertically arranged, the detection device 1 is provided with a light emitter (not shown in the figure) capable of emitting visible light 100, an infrared emitter (not shown in the figure) capable of emitting infrared light 200, a visible light detector for receiving visible light and an infrared light detector for receiving infrared light, the light emitter, the infrared emitter, the visible light detector and the infrared light detector are all known, the emitting direction of the light emitter, the emitting direction of the infrared emitter, the receiving direction of the visible light detector and the receiving direction of the infrared light detector all face the convex lens 2, in the novel LED display device, the light emitter preferably adopts a red light emitter, and the visible light detector correspondingly adopts a red light detector.
The distance between the detection device 1 and the convex lens 2 is 3-10cm, preferably, the distance between the emission end of the light emitter, the emission end of the infrared emitter, the detection end of the visible light detector and the detection end of the infrared light detector and the convex lens 2 is 5cm, the distance between the convex lens 2 and the visible light filter 3 is 15-25cm, preferably 20cm, the visible light filter 3 and the reflector 4 are arranged close to each other, preferably, are closely matched, and the reflector 4 is an infrared light reflector for reflecting infrared light back from the original path.
The invention relates to a highway visibility detection device, when in use, the detection device emits red light 100 and infrared light 200, the red light and the infrared light pass through a convex lens 2 to a visible light filter 3, at the moment, the red light and the infrared light are influenced by particles in the air in the process of transmitting to the visible light filter, a small amount of backward scattering of the red light and the infrared light can be generated, most of the red light is filtered by the visible light filter 3 and cannot be reflected to an infrared detector, the number of photons received by the red light detector is the number of photons of red light backward radiation, the infrared light 200 is reflected to a reflecting piece 4 to the detection device by an original circuit through the visible light filter 3, the number of photons received by the infrared light detector at the detection device is the sum of the number of photons transmitted by the infrared light and the number of photons of infrared light backward radiation, the device can calculate the number of photons of backward radiation when calculating the visibility, avoid traditional visibility to calculate not considering to the radiating problem after, the calculation precision of visibility has been improved greatly to make detection device's detection accuracy higher, and simultaneously, whole device structure is simple and easy, easily arranges, installation and maintenance, and in addition, whole detection adopts the reflective to detect, compares in traditional components of a whole that can function independently correlation formula detection light path calibration simple relatively, and under the unchangeable condition of optical path, this neotype transmitter and detector's installation distance can reduce half, is reducing the area of whole device greatly.
In the invention, the reflecting piece 4 is a cylinder with a 3MM reflecting film adhered to one surface facing the visible light filter, preferably the cylinder is a prism, infrared light at different angles can be reflected back by utilizing the matching of the 3MM reflecting film and the prism, and the calculation accuracy of visibility is further ensured.
In the present invention, as shown in fig. 2, the detecting device is installed on an installation housing 5, the installation housing 5 is a detachable casing or a buckling box which is buckled relatively, the installation housing 5 is installed on a vertical column 6 which is vertically arranged, the vertical column 6 is a metal vertical column, the upper end of the vertical column 6 is provided with a horizontal bracket 7, the horizontal bracket 7 is a metal bracket, the vertical column and the horizontal bracket form an inverted L shape, the horizontal bracket is located on the right side surface of the upper end of the vertical column, the first end of the horizontal bracket 7 is vertically arranged with the right side surface of the vertical column 6, the second end extends back to the vertical column, the installation housing 5 is installed on the right side surface of the vertical column 6 in a locking manner, the right side surface of the installation housing 5 is provided with a light window for emitting or emitting light, and the convex lens 2, the visible light filter 3 and the reflector 4 are all installed on the lower bottom surface of the horizontal bracket 7; the optical lens of the detection device can be prevented from being polluted by the mounting shell 5, the detection precision is enhanced, the mounting and maintenance of the detection device are facilitated by the mounting shell splitting structure, and the detection device is mounted by the upright column and the transverse support.
In the novel, highway visibility detection device is still including having solar cell panel, the solar power unit of rechargeable battery and controller, this solar power unit is known technology, it states no longer to mention here, solar cell panel installs on the top surface of horizontal stand, rechargeable battery and controller are installed in the installation casing, rechargeable battery is connected with detection device's power end electricity, rechargeable battery and ruddiness emitter promptly, infrared emitter, visible light detector and infrared detector's power end electricity is connected, give the light emitter, infrared emitter, visible light detector and infrared detector power supply, this kind of electric connection mode is publicly known, utilize the installation and the application of the convenient whole detection device of solar power unit, and whole device power consumption is little, can protect the long-term operation of whole device, high durability and convenient use.
In this novel, stand 6's right flank is located installation casing below and is equipped with red light (not drawn in the picture), yellow light (not drawn in the picture) and green light (not drawn in the picture), and red light, yellow light and green light are the LED lamp, and rechargeable battery supplies power for each LED lamp, and each LED lamp of control is lighted correspondingly to the result that utilizes three-colour LED lamp detectable detection device, can play the safety warning effect to driver's driving.
The above-described embodiments and drawings are not intended to limit the structure of the present invention, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (8)
1. A highway visibility detection device is characterized by comprising a mounting shell, a detection device, a convex lens, a visible light filter and a reflecting piece, wherein the detection device is mounted in the mounting shell, the detection device, the convex lens, the visible light filter and the reflecting piece are sequentially arranged on the same straight line at intervals, the convex lens, the visible light filter and the reflecting piece are vertically arranged, the detection device is provided with a light emitter capable of emitting visible light, an infrared emitter capable of emitting infrared light, a visible light detector for receiving visible light and an infrared light detector for receiving infrared light, the emitting direction of the light emitter, the emitting direction of the infrared emitter, the receiving direction of the visible light detector and the receiving direction of the infrared light detector all face the convex lens, a window for emitting and emitting light is formed in the mounting shell, the distance between the detection device and the convex lens is 3-10cm, the distance between the convex lens and the visible light filter is 15-25cm, the visible light filter and the reflector are arranged close to each other, and the reflector is an infrared light reflector which reflects infrared light back in the original way.
2. The highway visibility detection device according to claim 1, wherein: the reflecting piece is a cylinder, one surface of which facing the visible light filter is adhered with a 3MM reflecting film.
3. The highway visibility detecting device according to claim 2, wherein: the cylinder is a prism.
4. The highway visibility detection device according to claim 1, wherein: the distance between the detection device and the convex lens is 5cm, the distance between the convex lens and the visible light filter is 20cm, and the visible light filter is closely matched with the reflecting piece.
5. The highway visibility detection device according to claim 1, wherein: the light emitter is a red light emitter, and the visible light detector is a red light detector.
6. The highway visibility detection device according to claim 1, wherein: the installation shell is installed on a vertical column which is vertically arranged, a transverse support is arranged at the upper end of the vertical column, the first end of the transverse support is perpendicular to one side face of the vertical column, the second end of the transverse support extends towards the vertical column in a back mode, the installation shell is installed on one side face of the vertical column and located on the same side face of the vertical column together with the transverse support, and the convex lens, the visible light filter and the light reflecting piece are all installed on the lower bottom face of the transverse support.
7. The highway visibility detection device according to claim 6, wherein: the solar energy power supply device is provided with a solar cell panel, a rechargeable battery and a controller, the solar cell panel is installed on the top surface of the transverse support, the rechargeable battery and the controller are installed in the installation shell, and the rechargeable battery is connected with the detection device in a power supply mode.
8. The highway visibility detection device according to claim 6, wherein: the upright posts are positioned below the mounting shell and provided with a red light, a yellow light and a green light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110629307.8A CN113281306A (en) | 2021-06-03 | 2021-06-03 | Highway visibility detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110629307.8A CN113281306A (en) | 2021-06-03 | 2021-06-03 | Highway visibility detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113281306A true CN113281306A (en) | 2021-08-20 |
Family
ID=77283743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110629307.8A Pending CN113281306A (en) | 2021-06-03 | 2021-06-03 | Highway visibility detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113281306A (en) |
-
2021
- 2021-06-03 CN CN202110629307.8A patent/CN113281306A/en active Pending
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Inventor after: Wang Hua Inventor after: Quan Wei Inventor after: Tian Jinbao Inventor after: Wei Zhichao Inventor after: Man Yongxing Inventor before: Wang Hua Inventor before: Quan Wei Inventor before: Tian Jinbao Inventor before: Gai Zhichao Inventor before: Man Yongxing |
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