CN109283593B - Vehicle chassis detection system and vehicle chassis detection method - Google Patents
Vehicle chassis detection system and vehicle chassis detection method Download PDFInfo
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- CN109283593B CN109283593B CN201811415690.1A CN201811415690A CN109283593B CN 109283593 B CN109283593 B CN 109283593B CN 201811415690 A CN201811415690 A CN 201811415690A CN 109283593 B CN109283593 B CN 109283593B
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- 230000005855 radiation Effects 0.000 claims abstract description 157
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- 238000004364 calculation method Methods 0.000 claims description 17
- 230000001502 supplementing effect Effects 0.000 claims description 12
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 11
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 11
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- 125000001309 chloro group Chemical group Cl* 0.000 claims 2
- 239000007789 gas Substances 0.000 description 73
- 238000003331 infrared imaging Methods 0.000 description 14
- 230000002093 peripheral effect Effects 0.000 description 8
- 239000013589 supplement Substances 0.000 description 8
- 238000007689 inspection Methods 0.000 description 5
- 231100001261 hazardous Toxicity 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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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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- 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
- G01N21/84—Systems specially adapted for particular applications
-
- 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
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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Abstract
The invention discloses a vehicle chassis detection system and a vehicle chassis detection method. The vehicle chassis detection system includes: the information acquisition module comprises a first visible light image acquisition unit, a gas measurement unit and a radiation measurement unit; the identity information acquisition module is used for acquiring the identity information of the vehicle; a control module; and the information processing module is communicated with each of the information acquisition module and the identity information acquisition module, and is used for retrieving a stored vehicle chassis history image according to the identity information, matching the first visible light image with the vehicle chassis history image so as to identify whether foreign matters exist, judging the dangerousness of the foreign matters according to the gas concentration and the radiation intensity when the foreign matters exist, and judging the dangerousness of the foreign matters when the concentration is greater than or equal to a preset concentration or the radiation intensity is greater than or equal to a preset radiation intensity. The vehicle chassis detection system has the advantages of high recognition efficiency, high recognition accuracy and the like.
Description
Technical Field
The invention relates to a vehicle chassis detection system and a vehicle chassis detection method.
Background
As automobiles are becoming more popular in daily life, automobile safety issues are becoming more and more important. Particularly, the chassis of an automobile is often utilized by lawbreakers due to its unique secrecy, such as hiding bombs in the chassis of an automobile.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, a first aspect of the invention proposes a vehicle chassis detection system.
The vehicle chassis detection system according to the embodiment of the invention includes: the information acquisition module comprises a first visible light image acquisition unit for acquiring a first visible light image of a vehicle chassis, a gas measurement unit for measuring the type and concentration of gas and a radiation measurement unit for measuring the radiation wavelength and the radiation intensity; the identity information acquisition module is used for acquiring identity information of the vehicle, wherein the identity information comprises at least one of license plate information and vehicle type information; the control module comprises a first visible light image acquisition unit controller, a gas measurement unit controller, a radiation measurement unit controller and an identity information acquisition module controller, wherein the first visible light image acquisition unit controller is connected with the first visible light image acquisition unit so as to control the opening and closing of the first visible light image acquisition unit, the gas measurement unit controller is connected with the gas measurement unit so as to control the opening and closing of the gas measurement unit, the radiation measurement unit controller is connected with the radiation measurement unit so as to control the opening and closing of the radiation measurement unit, and the identity information acquisition module controller is connected with the identity information acquisition module so as to control the opening and closing of the identity information acquisition module; and the information processing module is communicated with each of the information acquisition module and the identity information acquisition module, and is used for retrieving a stored vehicle chassis history image according to the identity information, matching the first visible light image with the vehicle chassis history image so as to identify whether a foreign object exists, judging the risk of the foreign object according to the gas concentration and the radiation intensity when the foreign object exists, and judging the risk of the foreign object when the concentration is greater than or equal to a preset concentration or the radiation intensity is greater than or equal to a preset radiation intensity.
The vehicle chassis detection system provided by the embodiment of the invention has the advantages of high recognition efficiency and high recognition accuracy.
In addition, the vehicle chassis detection system according to the above embodiment of the invention may have the following additional technical features:
according to an embodiment of the present invention, the information acquisition module further includes a second visible light image acquisition unit for acquiring a second visible light image of at least one of the front and rear surfaces of the vehicle, the information processing module is for storing the first visible light image and the second visible light image in association, preferably, the information processing module is for storing the first visible light image, the second visible light image, and their photographing times in association, preferably, each of the first visible light image acquisition unit and the second visible light image acquisition unit is a CCD camera.
According to an embodiment of the present invention, the first and second visible light image capturing units are disposed at a distance along a preset direction, the first and second visible light image capturing units being opposite in the preset direction.
According to one embodiment of the present invention, the vehicle chassis detection system further includes: a vehicle bottom scanning platform; and a first light supplementing lamp and a second light supplementing lamp, wherein the first light supplementing lamp is positioned on a first side of a width central line of the vehicle bottom scanning platform, the second light supplementing lamp is positioned on a second side of the width central line of the vehicle bottom scanning platform, and preferably, each of the first visible light image acquisition unit and the second visible light image acquisition unit is positioned on the width central line of the vehicle bottom scanning platform.
According to one embodiment of the invention, the vehicle chassis detection system further comprises a vehicle speed measurement module for measuring a traveling speed of the vehicle, the vehicle speed measurement module being located on a width centerline of the under-vehicle scanning platform, wherein the control module is in communication with the vehicle speed measurement module for controlling the line frequency of the first visible light image acquisition unit in accordance with the traveling speed of the vehicle measured by the vehicle speed measurement module.
According to one embodiment of the present invention, the information processing module includes: a vehicle chassis history image storage unit configured to store the vehicle chassis history image; the matching calculation unit is used for matching the visible light image with the vehicle chassis history image so as to identify whether a foreign object exists, judging the risk of the foreign object according to the concentration and the radiation intensity when the foreign object exists, and judging the risk of the foreign object when the concentration is greater than or equal to a preset concentration or the radiation intensity is greater than or equal to a preset radiation intensity; preferably, the matching calculation unit is configured to correlate the first visible light image with a second visible light image of at least one of a front surface and a rear surface of the vehicle, and the information processing module further includes an information storage unit configured to store the first visible light image and the second visible light image correlated together, preferably, when the gas measurement unit detects flammable and explosive gas, the preset concentration is 10% lel; when the gas measurement unit detects chlorine gas, the preset concentration is 0.5ppm; when the gas measuring unit detects phosgene, the preset concentration is 0.1ppm; when the gas measurement unit detects sulfur dioxide, the preset concentration is 2pm; when the gas measurement unit detects formaldehyde, the preset concentration is 0.5ppm; the preset concentration is 0.1ppm when the gas measurement unit detects ozone, more preferably 30% lel when the gas measurement unit detects flammable and explosive gas; when the gas measurement unit detects chlorine gas, the preset concentration is 1ppm; when the gas measuring unit detects phosgene, the preset concentration is 0.2ppm; when the gas measurement unit detects sulfur dioxide, the preset concentration is 5pm; when the gas measurement unit detects formaldehyde, the preset concentration is 0.8ppm; when (when) The preset concentration is 0.2ppm when the gas measurement unit detects ozone, preferably the preset radiation intensity is 10v/m when the radiation wavelength is long, medium or short; when the radiation wavelength is ultrashort wave, the preset radiation intensity is 5v/m; when the radiation wavelength is microwave, the preset radiation intensity is 10 mu W/cm 2 More preferably, when the radiation wavelength is long wave, medium wave or short wave, the preset radiation intensity is 25v/m; when the radiation wavelength is ultrashort wave, the preset radiation intensity is 512v/m; when the radiation wavelength is microwave, the preset radiation intensity is 40 mu W/cm 2 。
According to one embodiment of the present invention, the vehicle chassis detection system further includes: an external receiving module in communication with the information processing module for displaying the first visible light image, the concentration, and the radiation intensity; and the alarm module is used for alarming when the concentration is greater than or equal to a preset concentration or the radiation intensity is greater than or equal to a preset radiation intensity.
The second aspect of the present invention proposes a vehicle chassis detection method, comprising the steps of: collecting a first visible light image of a vehicle chassis, and performing radiation wavelength measurement, radiation intensity measurement, gas type measurement and gas concentration measurement on the vehicle chassis so as to obtain radiation wavelength, radiation intensity and gas type and concentration; collecting identity information of a vehicle, wherein the identity information comprises at least one of license plate information and vehicle type information; retrieving a stored vehicle chassis history image according to the identity information, matching the first visible light image with the vehicle chassis history image so as to identify whether a foreign object exists, judging the risk of the foreign object according to the concentration and the radiation intensity when the foreign object exists, judging that the foreign object has the risk when the concentration is greater than or equal to a preset concentration or the radiation intensity is greater than or equal to a preset radiation intensity,
Preferably, when the gas measurement unit detects flammable and explosive gas, the preset concentration is 10% lel; when the gas measurement unit detects chlorine gas, the preset concentration is 0.5ppm; when the gas measuring unit detects phosgene, the preset concentration is 0.1ppm; when the gas measurement unit detects sulfur dioxide, the preset concentration is 2pm; when the gas measurement unit detects formaldehyde, the preset concentration is 0.5ppm; when the gas measuring unit detects ozone, the preset concentration is 0.1ppm,
more preferably, the preset concentration is 30% lel when the gas measuring unit detects a flammable and explosive gas; when the gas measurement unit detects chlorine gas, the preset concentration is 1ppm; when the gas measuring unit detects phosgene, the preset concentration is 0.2ppm; when the gas measurement unit detects sulfur dioxide, the preset concentration is 5pm; when the gas measurement unit detects formaldehyde, the preset concentration is 0.8ppm; when the gas measuring unit detects ozone, the preset concentration is 0.2ppm,
preferably, when the radiation wavelength is long wave, medium wave or short wave, the preset radiation intensity is 10v/m; when the radiation wavelength is ultrashort wave, the preset radiation intensity is 5v/m; when the radiation wavelength is microwave, the preset radiation intensity is 10 mu W/cm 2 ，
More preferably, when the radiation wavelength is long, medium or short, the preset radiation intensity is 25v/m; when the radiation wavelength is ultrashort wave, the preset radiation intensity is 512v/m; when the radiation wavelength is microwave, the preset radiation intensity is 40 mu W/cm 2 。
According to an embodiment of the present invention, the vehicle chassis detection method further includes: and measuring the running speed of the vehicle, and controlling the running frequency of a visible light image acquisition unit for acquiring the visible light image according to the running speed.
According to an embodiment of the present invention, the vehicle chassis detection method further includes: a second visible light image of at least one of the front and rear of the vehicle is acquired, the first and second visible light images are stored in association, and preferably, the first and second visible light images and their photographing times are stored in association.
Drawings
FIG. 1 is a schematic partial construction of a vehicle chassis detection system according to an embodiment of the present invention;
FIG. 2 is a topology of a vehicle chassis detection system according to an embodiment of the present invention;
fig. 3 is a flowchart of a vehicle chassis detection method according to an embodiment of the present invention.
A vehicle chassis detection system 10,
An information acquisition module 110, a first visible light image acquisition unit 111, an infrared imaging unit 112, a gray-height image acquisition unit 113, an inductance coil 116, a vehicle speed measurement module 150,
An under-car scanning platform 120,
A first light supplementing lamp 131, a second light supplementing lamp 132, a mounting table 140,
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A vehicle chassis detection system 10 according to an embodiment of the present invention is described below with reference to the accompanying drawings. As shown in fig. 1, the vehicle chassis detection system 10 according to the embodiment of the present invention includes an information acquisition module 110, an identity information acquisition module 160, a control module, and an information processing module 170.
The information acquisition module 110 includes a first visible light image acquisition unit 111 for acquiring a first visible light image of the vehicle chassis, a gas measurement unit 114 for measuring the kind and concentration of gas, and a radiation measurement unit 115 for measuring the radiation wavelength and radiation intensity. The identity information collection module 160 is configured to collect identity information of a vehicle, where the identity information includes at least one of license plate information and vehicle type information.
The control module includes a first visible light image acquisition unit controller connected to the first visible light image acquisition unit 111 to control the opening and closing of the first visible light image acquisition unit 111, a gas measurement unit controller connected to the gas measurement unit 114 to control the opening and closing of the gas measurement unit 114, a radiation measurement unit controller connected to the radiation measurement unit 115 to control the opening and closing of the radiation measurement unit 115, and an identity information acquisition module controller connected to the identity information acquisition module 160 to control the opening and closing of the identity information acquisition module 160.
The information processing module 170 is in communication with each of the information acquisition module 110 and the identity information acquisition module 160. The information processing module 170 is configured to retrieve a stored vehicle chassis history image according to the identity information, and match the first visible light image with the vehicle chassis history image to identify whether a foreign object exists, and determine a risk of the foreign object according to the concentration and the radiation intensity when the foreign object exists, and determine that the foreign object has a risk when the concentration is equal to or greater than a preset concentration or the radiation intensity is equal to or greater than a preset radiation intensity.
The invention also provides a vehicle chassis detection method. The vehicle chassis detection method according to the embodiment of the invention comprises the following steps:
a first visible light image of the vehicle chassis is acquired, and radiation wavelength measurement, radiation intensity measurement, gas species measurement, and gas concentration measurement are performed on the vehicle chassis to obtain radiation wavelength, radiation intensity, and gas species and concentration.
The method comprises the steps of collecting identity information of a vehicle, wherein the identity information comprises at least one of license plate information and vehicle type information.
And retrieving a stored vehicle chassis history image according to the identity information, and matching the first visible light image with the vehicle chassis history image so as to identify whether foreign matters exist. When the foreign matter exists, the risk of the foreign matter is judged according to the concentration and the radiation intensity, and when the concentration is more than or equal to a preset concentration or the radiation intensity is more than or equal to the preset radiation intensity, the risk of the foreign matter is judged.
The vehicle chassis detection method according to the embodiment of the invention may be implemented with the vehicle chassis detection system 10 according to the embodiment of the invention.
The vehicle chassis detection system 10 according to the embodiment of the present invention can match the first visible light image of the chassis of the vehicle with the stored vehicle chassis history image by providing the first visible light image acquisition unit 111 and the identity information acquisition module 160, thereby recognizing (judging) whether or not foreign matter exists.
The vehicle chassis detection system 10 according to the embodiment of the present invention can obtain the radiation wavelength, the radiation intensity, and the kind and concentration of the gas by providing the gas measurement unit 114 and the radiation measurement unit 115. Thus, when the presence of the foreign matter is identified, the risk of the foreign matter can be judged by judging whether the concentration is equal to or higher than the preset concentration or whether the radiation intensity is equal to or higher than the preset radiation intensity. Therefore, misjudgment on the danger of foreign matters on the chassis of the vehicle can be avoided, so that the recognition efficiency can be improved, and the recognition accuracy can be improved.
Therefore, the vehicle chassis detection system 10 according to the embodiment of the invention has the advantages of high recognition efficiency, high recognition accuracy, and the like. Correspondingly, the vehicle chassis detection method provided by the embodiment of the invention also has the advantages of high recognition efficiency, high recognition accuracy and the like.
As shown in fig. 1, in some embodiments of the present invention, the vehicle chassis detection system 10 may include an information acquisition module 110, an identity information acquisition module 160, a control module, and an information processing module 170.
The information acquisition module 110 includes a first visible light image acquisition unit 111, a gas measurement unit 114, and a radiation measurement unit 115. Preferably, the first visible light image acquisition unit 111 may be a CCD camera, the gas measurement unit 114 may be a gas sensor, and the radiation measurement unit 115 may be a radiation detector.
In one embodiment of the present invention, the information acquisition module 110 further includes a second visible light image acquisition unit for acquiring a second visible light image of at least one of the front and rear surfaces of the vehicle. That is, the second visible light image may be a front image of the vehicle or a rear image of the vehicle, and the second visible light image may be a front image and a rear image of the vehicle. The information processing module 170 is configured to store the first visible light image and the second visible light image in association.
Thus, a retrospective inspection of the vehicle can be performed. That is, when the vehicle chassis detection system 10 does not detect a potential hazardous article, a newly occurring hazardous article, but a hazardous event occurs, not only the associated first visible light image and the second visible light image can be recalled to locate a vehicle with a hidden hazardous article, but also the vehicle chassis detection system 10 can be modified.
Preferably, the information processing module 170 is configured to store the first visible light image, the second visible light image and their shooting times in association. The second visible light image capturing unit may be a CCD camera. The control module further includes a second visible light image acquisition unit controller connected to the second visible light image acquisition unit to control opening and closing of the second visible light image acquisition unit.
The first and second visible light image capturing units 111 and 111 may be disposed at a distance along a preset direction in which the first and second visible light image capturing units 111 and 111 are opposite. Whereby the structure of the vehicle chassis detection system 10 can be made more reasonable. The preset direction may be a traveling direction of the vehicle.
As shown in fig. 1, the vehicle chassis detection system 10 further includes an under-floor scanning platform 120, a first light supplement lamp 131, and a second light supplement lamp 132. By providing the under-vehicle scanning platform 120, the running speed of the vehicle can be reduced so as to obtain a clearer and more accurate first visible light image. By providing the first light supplementing lamp 131 and the second light supplementing lamp 132, illumination light with appropriate intensity can be provided to the first visible light image capturing unit 111 so as to obtain a clearer and more accurate visible light image.
Preferably, the first light supplement lamp 131 is located on a first side (e.g., left side) of the width centerline of the underbody scanning platform 120, and the second light supplement lamp 132 is located on a second side (e.g., right side) of the width centerline of the underbody scanning platform 120. The width center line of the underbody scanning platform 120 refers to: a center line of the under-vehicle scanning platform 120 extending in the width direction of the under-vehicle scanning platform 120. The illumination light having uniform intensity can thereby be supplied to the first visible light image pickup unit 111 so as to obtain a clearer, more accurate image of the first visible light.
As shown in fig. 1, the first light compensating lamps 131 may be plural (e.g., three), and the second light compensating lamps 132 may be plural (e.g., three). Preferably, the plurality of first light supplement lamps 131 and the plurality of second light supplement lamps 132 are symmetrical with respect to a width center line of the under-vehicle scanning platform 120. Thereby, the illumination light having a more uniform intensity can be provided to the first visible light image capturing unit 111 so as to obtain a clearer and more accurate first visible light image.
When the vehicle passes through the information acquisition module 110, the inductor 116 may be triggered so as to turn on the first and second light supplement lamps 131 and 132. Meanwhile, the first visible light image capturing unit 111 captures a first visible light image of a vehicle chassis (vehicle bottom), and the second visible light image capturing unit captures a second visible light image of at least one of the front and rear surfaces of the vehicle. Preferably, the inductor 116 is located on the width centerline of the underbody scanning platform 120.
The control module may also include a vehicle detector and a light supplement lamp controller. The vehicle detector may be coupled to the inductor 116 to control the opening and closing of the inductor 116. The light supplementary controller may be connected to the first and second light supplementary lamps 131 and 132 to control the first and second light supplementary lamps 131 and 132 to be turned on and off.
As shown in fig. 1, the vehicle chassis detection system 10 further includes a vehicle speed measurement module 150 for measuring the traveling speed of the vehicle, the vehicle speed measurement module 150 being located on the width centerline of the underbody scanning platform 120. The control module is in communication with the vehicle speed measurement module 150 for controlling the line frequency of the first visible light image acquisition unit 111 according to the running speed of the vehicle measured by the vehicle speed measurement module 150. Thereby a more complete, clearer first visible image can be obtained.
Specifically, the vehicle speed measurement module 150 measures the moving distance of the vehicle in the video through the camera to estimate the running speed of the vehicle, and the vehicle speed measurement module 150 transmits the speed information to the control module in real time, thereby controlling the line frequency of the visible light image acquisition unit 111 of the information acquisition module 110.
At the same time, the gas measurement unit 114 performs gas species measurement and gas concentration measurement on the vehicle chassis so as to obtain the species and concentration of the gas; the radiation measuring unit 115 performs radiation wavelength measurement and radiation intensity measurement on the vehicle chassis so as to obtain a radiation wavelength and radiation intensity; the identity information acquisition module 160 acquires identity information of the vehicle, the identity information including at least one of license plate information and vehicle type information.
In some examples of the invention, the information processing module 170 includes a vehicle chassis history image storage unit and a matching calculation unit.
The vehicle chassis history image storage unit is configured to store a vehicle chassis history image that is an image (visible light image) of a vehicle chassis when no foreign matter is present. The vehicle chassis history image stored by the vehicle chassis history image storage unit may be provided by a public security department so as to store vehicle chassis history images of all vehicles. When the vehicle chassis detection system 10 is used for a certain unit (e.g., a certain business, a certain cell, or a certain organization), the vehicle chassis history image storage unit may store only the vehicle chassis history image of the vehicle of the unit. The vehicle chassis history image storage unit may also store vehicle chassis history images of all or most vehicle models.
Preferably, the vehicle chassis history image storage unit has a networking sharing function.
The information processing module 170 is in communication with each of the information acquisition module 110 and the identity information acquisition module 160. For example, the information processing module 170 is in wireless communication with each of the information acquisition module 110 and the identity information acquisition module 160. The information acquisition module 110 may transmit the acquired first visible light image, the radiation wavelength, the radiation intensity, and the kind and concentration of the gas of the vehicle chassis to the information processing module 170, and the identity information acquisition module 160 may transmit the acquired identity information of the vehicle to the information processing module 170 (the matching calculation unit).
The matching calculation unit may retrieve the vehicle chassis history image corresponding to the vehicle from the vehicle chassis history image storage unit based on the identity information of the vehicle. The identity information collection module 160 may collect license plate information of the vehicle preferentially, so that the matching calculation unit may retrieve the vehicle chassis history image of the vehicle itself from the vehicle chassis history image storage unit according to the license plate information of the vehicle.
The identity information collection module 160 may also collect model information of the vehicle. The matching calculation unit may retrieve a vehicle chassis history image of a vehicle type to which the vehicle belongs from the vehicle chassis history image storage unit according to the vehicle type information of the vehicle. For example, if the matching calculation unit determines that the vehicle type of the vehicle is volwa V90 based on the vehicle type information of the vehicle, the matching calculation unit retrieves a vehicle chassis history image of volwa V90 from the vehicle chassis history image storage unit.
Preferably, the identity information acquisition module 160 may acquire license plate information and model information of the vehicle at the same time. Thus, when the vehicle chassis history image storage unit does not store the vehicle chassis history image of the vehicle itself, the matching calculation unit can retrieve the vehicle chassis history image of the vehicle type to which the vehicle belongs from the vehicle chassis history image storage unit according to the vehicle type information of the vehicle.
Then, the matching calculation unit matches the first visible light image with the vehicle chassis history image to identify whether or not foreign matter is present. If no foreign matter exists, the inspection is ended; if the foreign matter exists, judging the risk of the foreign matter according to the concentration and the radiation intensity, and judging that the foreign matter has the risk when the concentration is more than or equal to a preset concentration or the radiation intensity is more than or equal to the preset radiation intensity. It will be appreciated by those skilled in the art that when the concentration is equal to or higher than a predetermined concentration and the radiation intensity is equal to or higher than a predetermined radiation intensity, it is also judged that the foreign matter is dangerous.
When foreign matters such as paper, plastic bags and leaves are attached to the chassis of the vehicle, the conventional detection system is easy to misjudge the dangers of the foreign matters. The vehicle chassis detection system 10 can determine whether the foreign matter is dangerous according to the concentration and the radiation intensity, so that when the foreign matter such as paper, plastic bags, leaves and the like is attached to the chassis of the vehicle, the foreign matter is not considered to be dangerous, misjudgment on the danger of the foreign matter is eliminated, and the recognition efficiency and the recognition accuracy are improved.
Preferably, the preset concentration is 10% lel when the gas measuring unit 114 detects flammable and explosive gas; when the gas measurement unit 114 detects chlorine gas, the preset concentration is 0.5ppm; when the gas measurement unit 114 detects phosgene, the preset concentration is 0.1ppm; when the gas measurement unit 114 detects sulfur dioxide, the preset concentration is 2pm; when the gas measurement unit 114 detects formaldehyde, the preset concentration is 0.5ppm; when the gas measurement unit 114 detects ozone, the preset concentration is 0.1ppm.
More preferably, the preset concentration is 30% lel when the gas measuring unit 114 detects a flammable and explosive gas; when the gas measurement unit 114 detects chlorine gas, the preset concentration is 1ppm; when the gas measurement unit 114 detects phosgene, the preset concentration is 0.2ppm; when the gas measurement unit 114 detects sulfur dioxide, the preset concentration is 5pm; when the gas measurement unit 114 detects formaldehyde, the preset concentration is 0.8ppm; when the gas measurement unit 114 detects ozone, the preset concentration is 0.2ppm.
Specifically, when the gas measurement unit 114 detects flammable and explosive gas, there is no explosion hazard when the preset concentration is less than 10% lel; when the preset concentration is more than or equal to 10% LEL and less than 30% LEL, the explosion hazard exists; when the preset concentration is greater than or equal to 30% lel, there is a great risk of explosion.
When the gas measurement unit 114 detects chlorine, phosgene, sulfur dioxide, formaldehyde and ozone, respectively, when the preset concentrations are less than 0.5ppm, 0.1ppm, 2pm, 0.5ppm and 0.1ppm, respectively, no toxic gas treatment is considered to be present; when the preset concentrations are greater than or equal to 0.5ppm, 0.1ppm, 2pm, 0.5ppm and 0.1ppm and less than 1ppm, 0.2ppm, 5pm, 0.8ppm and 0.2ppm, respectively, as a toxic gas treatment with a low hazard level; when the preset concentrations are 1ppm or more, 0.2ppm, 5pm, 0.8ppm and 0.2ppm, respectively, as a toxic gas treatment with a high risk level.
Preferably, when the radiation wavelength is long, medium or short, the preset radiation intensity is 10v/m; when the radiation wavelength is ultrashort wave, the preset radiation intensity is 5v/m; when the radiation wavelength is microwave, the preset radiation intensity is 10 mu W/cm 2 。
More preferably, when the radiation wavelength is long, medium or short, the preset radiation intensity is 25v/m; when the radiation wavelength is ultrashort wave, the preset radiation intensity is 512v/m; when the radiation wavelength is microwave, the preset radiation intensity is 40 mu W/cm 2 。
When the radiation measurement unit 115 detects the radiation intensity, but the radiation intensity is smaller than the preset radiation intensity, the first visible light image may be fused to perform judgment, and according to the first visible light image, a BP neural network is used to fuse the obtained result with a decision layer, so as to obtain a more accurate judgment result.
The detection information can be recorded in a database, and the file number is license plate + vehicle type + date + place.
Preferably, the matching calculation unit is configured to correlate the first visible light image with a second visible light image of at least one of the front and rear of the vehicle, and the information processing module 170 further includes an information storage unit configured to store the first visible light image and the second visible light image correlated together.
The vehicle chassis detection system 10 may further include an external receiving module 180 and an alarm module. The external receiving module 180 is in communication with the information processing module 170, the external receiving module 180 being configured to display the first visible light image, the concentration and the radiation intensity. The alarm module is used for alarming when the concentration is larger than or equal to a preset concentration or the radiation intensity is larger than or equal to a preset radiation intensity.
Specifically, the external receiving module 180 may include hardware such as a display, a keyboard, a mouse, and the like. The first visible light image of the vehicle chassis is displayed on a display in real time, and the area where the foreign matter is located is marked by a red frame. The operator can call the first visible light image in real time through a mouse and the like to view the first visible light image, and can perform local amplification.
If the concentration is greater than or equal to the preset concentration or the radiation intensity is greater than or equal to the preset radiation intensity, the alarm module can alarm to remind the security inspector that dangerous objects possibly exist in the vehicle in the field and display the super-standard value on the display.
The hazard referred to herein is that the vehicle chassis detection system 10 prompts the operator that a foreign object may be at real hazard, but requires a field inspection by a security inspector to confirm whether it is truly at hazard.
The information acquisition module 110 may further include an infrared imaging unit 112 for acquiring an infrared image and a gray-height image acquisition unit 113 for acquiring a gray-height image. The control module further includes an infrared imaging unit controller and a gray-height image acquisition unit controller. The infrared imaging unit controller is connected to the infrared imaging unit 112 to control the opening and closing of the infrared imaging unit 112, and the gray-height image capturing unit controller is connected to the gray-height image capturing unit 113 to control the opening and closing of the gray-height image capturing unit 113.
When the foreign matter exists, the infrared ray image, the gray-level image and the first visible light image are matched so as to obtain the temperature difference and the level difference of the area where the foreign matter exists and the surrounding area, and the danger of the foreign matter is judged according to the temperature difference and the level difference.
The vehicle chassis detection system 10 according to the embodiment of the present invention can obtain an infrared ray image and a gradation-height image of the chassis of the vehicle by providing the infrared ray imaging unit 112 and the gradation-height image acquisition unit 113. When the foreign matter is identified, the infrared ray image, the gray-level image and the first visible light image can be matched so as to obtain the temperature difference and the height difference between the region where the foreign matter is located and the peripheral region of the region where the foreign matter is located, so that the three-dimensional attribute of the foreign matter can be obtained, and the danger of the foreign matter can be judged according to the temperature difference and the height difference.
Therefore, misjudgment on the danger of foreign matters on the chassis of the vehicle can be further avoided, so that the recognition efficiency can be further improved, and the recognition accuracy can be further improved.
Therefore, the vehicle chassis detection system 10 according to the embodiment of the invention has the advantages of high recognition efficiency, high recognition accuracy, and the like. Correspondingly, the vehicle chassis detection method provided by the embodiment of the invention also has the advantages of high recognition efficiency, high recognition accuracy and the like.
Preferably, the infrared imaging unit 112 may be an infrared camera, and the gray-height image acquisition unit 113 may be a laser ranging sensor.
As shown in fig. 1, the gray-height image acquisition unit 113 may be a plurality of laser ranging sensors, and a plurality of the laser ranging sensors may be disposed at intervals along a first preset direction, with adjacent two of the laser ranging sensors being spaced apart by a preset distance. That is, a plurality of the laser ranging sensors may be aligned to form an array, and the range information is drawn in real time into the gray-height image.
For example, the gray-height image acquisition unit 113 may be 19 laser ranging sensors, and 19 laser ranging sensors may be equally spaced along the first preset direction, with adjacent two of the laser ranging sensors being spaced apart by 12 cm-13 cm. Preferably, the first preset direction may be a horizontal direction and perpendicular to a traveling direction of the vehicle.
In one embodiment of the present invention, as shown in fig. 1, the first visible light image capturing unit 111 and the infrared imaging unit 112 are disposed at a distance along a second preset direction in which the first visible light image capturing unit 111 and the infrared imaging unit 112 are opposite, the first preset direction being perpendicular to the second preset direction. Whereby the results of the vehicle chassis detection system 10 can be made more reasonable. Preferably, the second preset direction may coincide with a traveling direction of the vehicle.
As shown in fig. 1, it is preferable that each of the first visible light image capturing unit 111 and the infrared imaging unit 112 is located on a width center line of the under-vehicle scanning platform 120. Thereby, the relative position relationship between the first visible light image acquisition unit 111 and the vehicle can be consistent with the relative position relationship between the infrared imaging unit 112 and the vehicle, so that the infrared image and the first visible light image can be more accurately matched, the area where the foreign matter is located can be more accurately found out on the infrared image, and the temperature difference between the area where the foreign matter is located and the peripheral area of the area where the foreign matter is located can be more accurately obtained.
The vehicle chassis detection system 10 may also include a mounting table 140, and the mounting table 140 may be positioned on the ground. Among them, the first visible light image acquisition unit 111, the infrared imaging unit 112, the chemical substance measuring unit 114, the radiation measuring unit 115, the inductance coil 116, and the vehicle speed measuring module 150 may be provided on the mounting stage 140. Preferably, the mounting table 140 may be provided with a mounting groove in which both the first visible light image capturing unit 111 and the infrared imaging unit 112 may be disposed.
When the vehicle passes through the information acquisition module 110, the infrared imaging unit 112 acquires an infrared image of the vehicle chassis, and the gradation-height image acquisition unit 113 acquires a gradation-height image of the vehicle chassis (scans three-dimensional information of the vehicle chassis). The information acquisition module 110 may transmit the acquired infrared ray image and gray-level-height image of the vehicle chassis to the information processing module 170 (the matching calculation unit).
Then, the matching calculation unit matches the first visible light image with the vehicle chassis history image to identify whether or not foreign matter is present. If no foreign matter exists, the inspection is ended; if a foreign object is present, the foreign object may be marked, for example, with a red frame.
When the foreign matter exists, the matching calculation unit performs foreign matter positioning so as to obtain a region where the foreign matter exists, and the matching calculation unit can match the infrared image, the gray-level image and the first visible light image so as to obtain a temperature difference and a height difference between the region where the foreign matter exists and a peripheral region of the region where the foreign matter exists.
By matching, the region where the foreign matter is located and the peripheral region of the region where the foreign matter is located can be obtained on the infrared image and the gray-level image, and further the temperature difference and the height difference between the region where the foreign matter is located and the peripheral region of the region where the foreign matter is located can be obtained.
The region where the foreign matter is located is an image region where the edge of the foreign matter on an image (the infrared ray image, the gray-level image, the first visible light image) is included. That is, the region where the foreign matter is located refers to an image region included in an edge of a portion showing the foreign matter on the image. The peripheral area of the area where the foreign matter is located is an image area obtained by expanding the area where the foreign matter is located outwards. Preferably, the distance between the edge of the peripheral area of the area where the foreign matter is located and the edge of the area where the foreign matter is located may be 15 cm or less.
When foreign matters such as paper, plastic bags and leaves are attached to the chassis of the vehicle, the conventional detection system cannot acquire the three-dimensional attribute of the foreign matters, so that misjudgment is easily caused on the danger of the foreign matters. The vehicle chassis detection system 10 can determine whether the foreign matter is dangerous according to the temperature difference and the height difference between the area where the foreign matter is located and the peripheral area of the area where the foreign matter is located, so that when the foreign matter such as paper, plastic bag, leaf and the like is attached to the chassis of the vehicle, the foreign matter is not considered to be dangerous any more, so that misjudgment on the danger of the foreign matter is eliminated, and the recognition efficiency and the recognition accuracy are improved.
Preferably, when the height difference is equal to or greater than a first preset value, it is determined that the foreign matter is at risk. More preferably, the first preset value is 5 cm. Further preferably, the first preset value is 10 cm.
Preferably, when the temperature difference is equal to or greater than a second preset value, it is determined that the foreign matter is dangerous. More preferably, the second preset value is 5 degrees celsius. Further preferably, the second preset value is 10 degrees celsius. Since the vehicle itself has a high temperature, when the vehicle chassis is shielded by the foreign matter and the thickness of the foreign matter is large, the temperature of the vehicle chassis and the temperature of the foreign matter have a large difference because the specific heat capacity and the heat transfer coefficient of the vehicle chassis are different from those of the foreign matter. And when the temperature difference is larger than or equal to a second preset value, judging that the foreign matter is dangerous.
The detection information can be recorded in a database, and the file number is license plate + vehicle type + date + place.
The external receiving module 180 may also be used to display the first visible light image, the infrared image, the gray-level image, the region where the foreign matter is located (the foreign matter presence position is marked with a red frame), the temperature difference, and the height difference.
The first visible light image of the vehicle chassis is displayed on the display of the external receiving module 180 in real time, and the region where the foreign matter is located is marked with a red frame. The operator (security inspector) can also view the infrared image, the gray-level image, the temperature difference, and the height difference of the vehicle chassis through the display.
An operator can call the first visible light image, the infrared image and the gray-level image in real time through a mouse and the like to view, and can perform local amplification. For example, the volume of the foreign matter can be determined by the temperature difference and the height difference. If the abnormal condition is detected, the early warning can be manually performed, and a security inspector in the field is notified to perform field inspection on the vehicle.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (23)
1. A vehicle chassis detection system, comprising:
The information acquisition module comprises a first visible light image acquisition unit for acquiring a first visible light image of a vehicle chassis, a gas measurement unit for measuring the type and concentration of gas and a radiation measurement unit for measuring the radiation wavelength and the radiation intensity;
the identity information acquisition module is used for acquiring identity information of the vehicle, wherein the identity information comprises at least one of license plate information and vehicle type information;
the control module comprises a first visible light image acquisition unit controller, a gas measurement unit controller, a radiation measurement unit controller and an identity information acquisition module controller, wherein the first visible light image acquisition unit controller is connected with the first visible light image acquisition unit so as to control the opening and closing of the first visible light image acquisition unit, the gas measurement unit controller is connected with the gas measurement unit so as to control the opening and closing of the gas measurement unit, the radiation measurement unit controller is connected with the radiation measurement unit so as to control the opening and closing of the radiation measurement unit, and the identity information acquisition module controller is connected with the identity information acquisition module so as to control the opening and closing of the identity information acquisition module; and
The information processing module is communicated with each of the information acquisition module and the identity information acquisition module, and is used for retrieving a stored vehicle chassis history image according to the identity information, matching the first visible light image with the vehicle chassis history image so as to identify whether a foreign object exists, judging the risk of the foreign object according to the gas concentration and the radiation intensity when the foreign object exists, and judging that the foreign object has the risk when the concentration is greater than or equal to a preset concentration or the radiation intensity is greater than or equal to the preset radiation intensity.
2. The vehicle chassis detection system of claim 1, wherein the information acquisition module further comprises a second visible light image acquisition unit for acquiring a second visible light image of at least one of a front side and a rear side of the vehicle, the information processing module for storing the first visible light image and the second visible light image in association.
3. The vehicle chassis detection system of claim 2, wherein the first and second visible light image acquisition units are disposed spaced apart along a preset direction, the first and second visible light image acquisition units being opposite in the preset direction.
4. The vehicle chassis detection system of claim 2, further comprising:
a vehicle bottom scanning platform; and
the vehicle bottom scanning platform comprises a first light supplementing lamp and a second light supplementing lamp, wherein the first light supplementing lamp is located on a first side of a width central line of the vehicle bottom scanning platform, and the second light supplementing lamp is located on a second side of the width central line of the vehicle bottom scanning platform.
5. The vehicle chassis detection system of claim 4, further comprising a vehicle speed measurement module for measuring a travel speed of the vehicle, the vehicle speed measurement module being located on a width centerline of the under-vehicle scanning platform, wherein the control module is in communication with the vehicle speed measurement module for controlling a travel frequency of the first visible light image acquisition unit based on the travel speed of the vehicle measured by the vehicle speed measurement module.
6. The vehicle chassis detection system of claim 1, wherein the information processing module comprises:
a vehicle chassis history image storage unit configured to store the vehicle chassis history image; and
and the matching calculation unit is used for matching the visible light image with the vehicle chassis history image so as to identify whether a foreign object exists, judging the risk of the foreign object according to the concentration and the radiation intensity when the foreign object exists, and judging the risk of the foreign object when the concentration is greater than or equal to a preset concentration or the radiation intensity is greater than or equal to a preset radiation intensity.
7. The vehicle chassis detection system of claim 1, further comprising:
an external receiving module in communication with the information processing module for displaying the first visible light image, the concentration, and the radiation intensity; and
and the alarm module is used for alarming when the concentration is greater than or equal to a preset concentration or the radiation intensity is greater than or equal to a preset radiation intensity.
8. The vehicle chassis detection system of claim 2, wherein the information processing module is configured to store the first visible light image, the second visible light image, and their times of capture in association.
9. The vehicle chassis detection system of claim 2, wherein each of the first and second visible light image acquisition units is a CCD camera.
10. The vehicle chassis detection system of claim 4, wherein each of the first and second visible light image acquisition units is located on a width centerline of the underbody scanning platform.
11. The vehicle chassis detection system of claim 6, wherein the match computing unit is configured to correlate the first visible light image with a second visible light image of at least one of a front side and a rear side of the vehicle, the information processing module further comprising an information storage unit configured to store the first visible light image and the second visible light image correlated together.
12. The vehicle chassis detection system of claim 6, wherein the preset concentration is 10% lel when the gas measurement unit detects flammable and explosive gas; when the gas measurement unit detects chlorine gas, the preset concentration is 0.5ppm; when the gas measuring unit detects phosgene, the preset concentration is 0.1ppm; when the gas measurement unit detects sulfur dioxide, the preset concentration is 2pm; when the gas measurement unit detects formaldehyde, the preset concentration is 0.5ppm; when the gas measurement unit detects ozone, the preset concentration is 0.1ppm.
13. The vehicle chassis detection system of claim 6, wherein the preset concentration is 30% lel when the gas measurement unit detects flammable and explosive gas; when the gas measurement unit detects chlorine gas, the preset concentration is 1ppm; when the gas measuring unit detects phosgene, the preset concentration is 0.2ppm; when the gas measurement unit detects sulfur dioxide, the preset concentration is 5pm; when the gas measurement unit detects formaldehyde, the preset concentration is 0.8ppm; when the gas measurement unit detects ozone, the preset concentration is 0.2ppm.
14. The vehicle chassis detection system of claim 6, wherein the preset radiation intensity is 10v/m when the radiation wavelength is long, medium or short; when the radiation wavelength is ultrashort wave, the preset radiation intensity is 5v/m; when the radiation wavelength is microwave, the preset radiation intensity is 10 mu W/cm 2 。
15. The vehicle chassis detection system of claim 6, wherein the preset radiation intensity is 25v/m when the radiation wavelength is long, medium or short; when the radiation wavelength is ultrashort wave, the preset radiation intensity is 512v/m; when the radiation wavelength is microwave, the preset radiation intensity is 40 mu W/cm 2 。
16. A vehicle chassis detection method, characterized by comprising the steps of:
collecting a first visible light image of a vehicle chassis, and performing radiation wavelength measurement, radiation intensity measurement, gas type measurement and gas concentration measurement on the vehicle chassis so as to obtain radiation wavelength, radiation intensity and gas type and concentration;
collecting identity information of a vehicle, wherein the identity information comprises at least one of license plate information and vehicle type information; and
And retrieving the stored vehicle chassis historical image according to the identity information, matching the first visible light image with the vehicle chassis historical image so as to identify whether a foreign object exists, judging the risk of the foreign object according to the concentration and the radiation intensity when the foreign object exists, and judging that the foreign object has the risk when the concentration is greater than or equal to a preset concentration or the radiation intensity is greater than or equal to a preset radiation intensity.
17. The vehicle chassis detection method of claim 16, further comprising:
and measuring the running speed of the vehicle, and controlling the running frequency of a visible light image acquisition unit for acquiring the visible light image according to the running speed.
18. The vehicle chassis detection method of claim 16, further comprising:
a second visible light image of at least one of the front and the back of the vehicle is acquired, and the first visible light image and the second visible light image are associated and stored.
19. The vehicle chassis detection method according to claim 16, wherein when the gas type is a flammable and explosive gas, the preset concentration is 10% lel; when the gas type is chlorine, the preset concentration is 0.5ppm; when the gas species is phosgene, the preset concentration is 0.1ppm; when the gas is sulfur dioxide, the preset concentration is 2pm; when the gas type is formaldehyde, the preset concentration is 0.5ppm; when the gas species is ozone, the preset concentration is 0.1ppm.
20. The vehicle chassis detection method according to claim 16, wherein the preset concentration is 30% lel when the gas species is a flammable and explosive gas; when the gas type is chlorine, the preset concentration is 1ppm; when the gas type is phosgene, the preset concentration is 0.2ppm; when the gas is sulfur dioxide, the preset concentration is 5pm; when the gas type is formaldehyde, the preset concentration is 0.8ppm; when the gas species is ozone, the preset concentration is 0.2ppm.
21. The method according to claim 16The vehicle chassis detection method is characterized in that when the radiation wavelength is long wave, medium wave or short wave, the preset radiation intensity is 10v/m; when the radiation wavelength is ultrashort wave, the preset radiation intensity is 5v/m; when the radiation wavelength is microwave, the preset radiation intensity is 10 mu W/cm 2 。
22. The vehicle chassis detection method according to claim 16, wherein when the radiation wavelength is long wave, medium wave or short wave, the preset radiation intensity is 25v/m; when the radiation wavelength is ultrashort wave, the preset radiation intensity is 512v/m; when the radiation wavelength is microwave, the preset radiation intensity is 40 mu W/cm 2 。
23. The vehicle chassis detection method according to claim 18, wherein the first visible light image, the second visible light image, and their photographing times are stored in association.
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