CN116898430A - Multi-band near infrared luminous shooting device and data acquisition method - Google Patents
Multi-band near infrared luminous shooting device and data acquisition method Download PDFInfo
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- TVWHNULVHGKJHS-UHFFFAOYSA-N Uric acid Natural products N1C(=O)NC(=O)C2NC(=O)NC21 TVWHNULVHGKJHS-UHFFFAOYSA-N 0.000 description 4
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14532—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring glucose, e.g. by tissue impedance measurement
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
- A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
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- A61B2562/18—Shielding or protection of sensors from environmental influences, e.g. protection from mechanical damage
- A61B2562/185—Optical shielding, e.g. baffles
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Abstract
The application discloses a multiband near infrared light-emitting shooting device and a data acquisition method thereof, wherein the shooting device comprises a transmitting module and a receiving module; the light source elements are symmetrically arranged in light source element mounting areas on the light source circuit board, so that overlapping parts of all light source element irradiation areas cover the part to be tested and respectively emit near infrared light with respective wavelengths in sequence, and the light source element mounting areas comprise at least one convex lens; the receiving module comprises a band-pass filter and a photoelectric sensor, wherein the photoelectric sensor is a photoelectric sensor for undistorted microspur shooting; the light passing through the band-pass filter is diffuse transmission light penetrating through the part to be measured. The shooting device provided by the application can enable the light source to be uniformly converged in the effective illumination area, simultaneously, the interference of light in other wave bands in the ambient light is avoided, the noise is reduced, and the detection accuracy is further improved.
Description
The application relates to a split application of Chinese patent application with the application date of 2023, 06 and 25 days, the application number of 2023107490068 and the name of 'a multiband near infrared light-emitting shooting device and a data acquisition method'.
Technical Field
The invention relates to the field of medical equipment and noninvasive detection, in particular to a multiband near infrared light-emitting shooting device and a data acquisition method.
Background
The method has the advantages of no wound, no pain, no consumable, quick analysis and the like in the detection application of medical indexes of various diseases by utilizing the characteristics of near infrared special physical parameters, collecting data and then analyzing the data parameters, in particular, near infrared spectroscopy (NIRS) and near infrared chemical imaging (NIRCI) analysis technologies, can effectively overcome the defects existing in the conventional invasive detection method, is favorable for realizing the screening, diagnosis, prevention and treatment of various diseases, and has great social benefit and medical value. Physical theory and experiment show that the transmission near infrared spectrum and near infrared chemical imaging carry effective information of the concentration of the component to be detected in blood, and can be used for quantitative analysis.
However, the technical scheme of performing non-invasive detection by using NIRS or NIRCI analysis technology provided by the prior art cannot realize the characteristics of high brightness, multiband, low noise and the like of the non-invasive detection device, and simultaneously, the characteristics of convergence, uniform brightness in an effective illumination area, high light energy utilization rate and good structural stability are satisfied.
Disclosure of Invention
In view of the foregoing drawbacks of the prior art, an object of the present invention is to provide a multi-band near infrared light emitting photographing device, which can solve at least one of the above problems,
in order to achieve the above purpose, the invention adopts the following technical scheme:
a multi-band near infrared luminous shooting device comprises a transmitting module and a receiving module;
the emitting module comprises at least one light source element and an emitting end optical lens group; the transmitting end optical lens group comprises at least one transmitting end convex lens;
the receiving module comprises a band-pass filter, a receiving end optical lens group and a photoelectric sensor;
the path through which the light emitted by the light source element of the emission module passes is sequentially the emission end optical lens group, the part to be detected, the band-pass filter, the receiving end optical lens group and the photoelectric sensor.
The light passing through the band-pass filter is diffuse transmission light penetrating through the part to be detected.
In some embodiments, the light source elements are symmetrically arranged in light source element mounting areas on the light source circuit board, so that overlapping parts of all the light source element irradiation areas cover the part to be tested and respectively emit near infrared light with respective wavelengths in sequence; the light source element mounting area is positioned on the light source circuit board and can be rectangular, circular and the like; the light source circuit board is round or rectangular.
The symmetrical arrangement includes center symmetry, axial symmetry, etc., for example, when the number of the light source elements is one, it may be arranged at the center position of the light source circuit board; when the number of the light source elements is three, the light source elements can be arranged on the light source circuit board in an equilateral triangle, namely, each light source element is positioned at the vertex of the equilateral triangle, and the center of the equilateral triangle is the center of the light source circuit board.
In some embodiments, the emission module further comprises at least one concave mirror for converging light emitted by the light source element; the light source elements are in one-to-one correspondence with the concave mirrors, namely, each light source element is correspondingly provided with one or more concave mirrors, the installation positions of the concave mirrors are determined according to the installation positions of the light source elements, and preferably, one light source element corresponds to one concave mirror and is installed at the center of the concave surface of the corresponding concave mirror; the concave mirror enables the near infrared light irradiation area of the light source element to uniformly cover the part to be measured, and particularly, the concave mirror can adjust the light path of the near infrared light emitted by the light source element, so that the adjusted near infrared light is uniformly converged in the appointed area of the part to be measured.
The path through which the light emitted by the light source element of the emission module passes is the concave mirror, the emission end optical lens group, the part to be detected, the band-pass filter, the receiving end optical lens group and the photoelectric sensor in sequence.
In some embodiments, the emitter convex lens is two plano-convex lenses.
In some embodiments, the bandpass filter does not allow light of a wavelength less than the minimum wavelength emitted by the light source element to pass, nor does it allow light of a wavelength greater than the maximum wavelength emitted by the light source element to pass.
In some embodiments, the emission module further comprises a light source temperature control system mounted on either side of the light source circuit board, preferably the back side.
In some embodiments, the multiband near infrared luminescence shooting device further comprises a detection object fixing device for placing a part to be detected; the detection object fixing device is internally provided with elastic substances, preferably silica gel, and is used for limiting and fixing the position of the part to be detected; the two sides of the detection object fixing device are respectively provided with a detection object fixing device light-passing hole, so that light transmitted by the emission end optical lens group passes through the detection object fixing device light-passing holes on one side to reach a part to be detected, passes through the detection object fixing device light-passing holes on the other side after diffuse transmission of the part to be detected, and reaches the receiving module.
In some embodiments, the analyte fixation device further comprises a mechanical switch, wherein the contact of the part to be detected triggers the mechanical switch, thereby activating the emitting module and the photoelectric sensor.
In some embodiments, the receiving module further comprises a spectral filter, a camera plate; the receiving end optical lens group comprises a wide-angle lens and a receiving end convex lens, and the receiving end convex lens can be a plano-convex lens group; an imaging channel is formed between the wide-angle lens and the camera plate, and the receiving end convex lens and the beam-splitting filter are arranged in the imaging channel; the camera board is a circuit board, is provided with the photoelectric sensor, is associated with the transmitting module, and can be externally connected with a processor to receive instructions of the processor to complete shooting, data acquisition, data set analysis, transmission and other works;
the imaging channel is mainly used for restricting an imaging range and preventing other stray light in the shooting device from entering the receiving end optical lens group and the photoelectric sensor; the receiving end optical lens group enables diffuse transmission light passing through a part to be detected to be accurately collected and converged to the photoelectric sensor; the light splitting filter only allows the light source element to emit light with a specific wave band to pass through and reach the photoelectric sensor; the photoelectric sensor is a high-precision high-quality photoelectric sensor, and the received light is diffuse transmission near infrared light penetrating through a part to be detected.
The path through which the light emitted by the light source element of the emission module passes is sequentially the emission end optical lens group, the part to be detected, the band-pass filter, the wide-angle lens, the receiving end convex lens, the light splitting filter and the photoelectric sensor.
In some embodiments, the multiband near infrared light emitting photographing device further comprises a connecting and fixing component device for respectively connecting and fixing each component, wherein a plurality of buckles are arranged on the connecting and fixing component device for installing and fixing each component, and the connecting and fixing component device simplifies the installation of each component, particularly the installation and fixing of the imaging channel become simple integration and insertion like building blocks, so that once the multiband near infrared light emitting photographing device is installed, no other adjustment is needed for light path convergence and photographing focusing of the multiband near infrared light emitting photographing device.
In some embodiments, the light source element is an LED lamp; the light source temperature control system is a semiconductor refrigerator (TEC); the spectral filter is a linear graded filter (Linear Variable Filter, LVF); the photoelectric sensor is an indium gallium arsenide (InGaAs) detector; the camera board is a PCB electronic circuit board.
In some embodiments, the light source element can emit light with a plurality of wavelengths between the wave bands of 750-2250 nm according to the detection purpose; the band-pass filter can allow light in a certain wave band interval in the wave band of 750-2250 nm to pass through according to the wavelength of the light emitted by the light source element; the light splitting filter can allow light with a plurality of wavelengths in a wave band of 750-2250 nm to pass through according to the wavelength of the light emitted by the light source element; the photoelectric sensor is black and white and can shoot near infrared images with a plurality of wavelengths in a wave band of 700-2500 nm according to the wavelength of light emitted by the light source element.
In some embodiments, the photographing device is used for measuring blood glucose index and hemoglobin concentration of anemia of the user, etc.; the wave band of the light emitted by the light source element is 750-1000 nm; the band-pass filter allows light in a band range of 750-1000 nm to pass through; the light splitting filter allows light with a plurality of wavelengths in a wave band of 750-1000 nm to pass through; the photoelectric sensor is black and white and can shoot near infrared images of a plurality of wavelengths in a wave band of 750-1000 nm.
In some embodiments, the camera is used to measure uric acid indicators of a user; the wave band of the light emitted by the light source element is 1550-1650 nm; the band-pass filter allows light in a 1550-1650 nm wave band interval to pass through; the light-splitting filter allows light with a plurality of wavelengths in 1550-1650 nm wave bands to pass through; the photosensor is black and white and can shoot near infrared images of a plurality of wavelengths in 1550-1650 nm wave bands.
The data acquisition method by using the multiband near infrared light-emitting shooting device comprises the following acquisition steps:
placing a part to be detected on the detection object fixing device, wherein the part to be detected triggers the mechanical switch through direct contact, and the mechanical switch starts the transmitting module and the photoelectric sensor through the camera board;
The light source elements sequentially emit near infrared light with respective wavelengths, and the wavelengths of the light emitted by the light source elements are the same at the same time;
the photoelectric sensor is matched with the time of the light source element to sequentially emit near infrared light with respective wavelengths, and continuously collects near infrared images of the to-be-detected part after a plurality of frames of near infrared light with the wavelengths pass through the to-be-detected part at each wavelength in sequence;
screening at least one frame in the near infrared image of the part to be detected for data pre-processing, and applying the processed near infrared image of the part to be detected as a data set to subsequent application.
The near infrared image of the part to be detected comprises but is not limited to a photo, a continuous video clip, a spectrogram and the like.
Preferably, after the photoelectric sensor collects the near infrared image of the part to be measured under the previous wavelength and confirms that the image can meet the collection purpose, the light source element which emits near infrared light of the previous wavelength is switched to the light source element which emits near infrared light of the next wavelength by emitting a feedback signal until the near infrared light images under all the wavelengths are collected.
The invention also provides another multiband near infrared luminous shooting device, which has the following technical scheme:
A multi-band near infrared luminous shooting device comprises a reflective transmitting module and a receiving module;
the reflective emission module comprises at least one light source element and an emission end optical lens group; the transmitting end optical lens group comprises at least one transmitting end concave mirror;
the receiving module comprises a band-pass filter, a receiving end optical lens group and a photoelectric sensor.
The path through which the light emitted by the light source element of the reflective emission module passes is sequentially the emission end concave mirror, the part to be detected, the band-pass filter, the receiving end optical lens group and the photoelectric sensor;
the light passing through the band-pass filter is diffuse transmission light penetrating through the part to be detected.
In some embodiments, the light source elements are symmetrically arranged in light source element mounting areas on the light source circuit board, so that overlapping parts of all the light source element irradiation areas cover the part to be tested and respectively emit near infrared light with respective wavelengths in sequence; the light source element mounting area may be rectangular, circular, etc.; the light source circuit board may be rectangular, circular, etc.
The symmetrical arrangement includes center symmetry, axis symmetry, etc., for example, when the number of the light source elements is three, the light source elements may be arranged in an equilateral triangle on the light source circuit board, that is, each of the light source elements is located at the vertex of the equilateral triangle, and the center of the equilateral triangle is the center of the light source circuit board.
In some embodiments, the transmitting end optical lens group further comprises at least one transmitting end convex lens, preferably two plano-convex lenses; the path through which the light emitted by the light source element of the reflective emission module passes is the emission end concave mirror, the emission end convex lens, the part to be detected, the band-pass filter, the receiving end optical lens group and the photoelectric sensor in sequence.
In some embodiments, a light source circuit board light-passing hole is formed in the middle of the light source circuit board, and the light converged by the concave mirror at the transmitting end passes through the light source circuit board light-passing hole to reach the receiving module; the light source elements are arranged around the light through holes of the light source circuit board.
In some embodiments, the bandpass filter does not allow light of a wavelength less than the minimum wavelength emitted by the light source element to pass, nor does it allow light of a wavelength greater than the maximum wavelength emitted by the light source element to pass. The band-pass filter is arranged between the light passing hole and the photoelectric sensor, and is preferably arranged at the light passing hole so as to save equipment space.
In some embodiments, the receiving module further comprises a spectral filter, a camera plate; the receiving end optical lens group comprises a wide-angle lens and a receiving end convex lens, and the receiving end convex lens can be a plano-convex lens group; an imaging channel is formed between the wide-angle lens and the camera plate, and the receiving end convex lens and the beam-splitting filter are arranged in the imaging channel; the camera board is a circuit board, is provided with the photoelectric sensor, is associated with the transmitting module, and can be externally connected with a processor to receive instructions of the processor to complete shooting, data acquisition, data set analysis, transmission and other works;
The path through which the light emitted by the light source element of the reflective emission module passes is the emission end concave mirror, the part to be detected, the band-pass filter, the wide-angle lens, the receiving end convex lens, the beam splitting filter and the photoelectric sensor in sequence.
In some embodiments, the light source element is an LED lamp; the light source temperature control system is a semiconductor refrigerator; the light splitting filter is a linear gradient filter; the photoelectric sensor is an InGaAs detector; the camera board is a PCB electronic circuit board.
In some embodiments, the light source element can emit light with a plurality of wavelengths between the wave bands of 750-2250 nm according to the detection purpose; the band-pass filter can allow light in a certain wave band interval in the wave band of 750-2250 nm to pass through according to the wavelength of the light emitted by the light source element; the light splitting filter can allow light with a plurality of wavelengths in a wave band of 750-2250 nm to pass through according to the wavelength of the light emitted by the light source element; the photoelectric sensor is black and white and can shoot near infrared images with a plurality of wavelengths in a wave band of 700-2500 nm according to the wavelength of light emitted by the light source element.
The data acquisition method by using the multiband near infrared light-emitting shooting device comprises the following acquisition steps:
Placing a part to be detected on the detection object fixing device, wherein the part to be detected triggers the mechanical switch through direct contact, and the mechanical switch starts the transmitting module and the photoelectric sensor through the camera board;
the light source elements sequentially emit near infrared light with respective wavelengths, and the wavelengths of the light emitted by the light source elements are the same at the same time;
the photoelectric sensor is matched with the time of the light source element to sequentially emit near infrared light with respective wavelengths, and continuously collects near infrared images of the to-be-detected part after a plurality of frames of near infrared light with the wavelengths pass through the to-be-detected part at each wavelength in sequence;
screening at least one frame in the near infrared image of the part to be detected for data pre-processing, and applying the processed near infrared image of the part to be detected as a data set to a subsequent detection algorithm.
The near infrared image of the part to be detected comprises but is not limited to a photo, a continuous video clip, a spectrogram and the like.
Preferably, after the photoelectric sensor collects the near infrared image of the part to be measured under the previous wavelength and confirms that the image can meet the collection purpose, the light source element which emits near infrared light of the previous wavelength is switched to the light source element which emits near infrared light of the next wavelength by emitting a feedback signal until the near infrared light images under all the wavelengths are collected.
The invention also provides another multiband near infrared luminous shooting device, which has the following technical scheme:
a multi-band near infrared luminous shooting device comprises a reflective emission module and a lens-free receiving module;
the reflective emission module comprises at least one light source element and an emission end optical lens group; the transmitting end optical lens group comprises at least one transmitting end concave mirror;
the lens-free receiving module comprises a band-pass filter and a photoelectric sensor, and the photoelectric sensor is a photoelectric sensor for undistorted macro shooting; the undistorted macro-photographing photoelectric sensor is a photoelectric sensor capable of performing undistorted imaging in a macro scene, and an organic photoelectric sensor (OPD) is one of the most widely used at present.
The path through which the light emitted by the light source element of the reflective emission module passes is sequentially the emission end concave mirror, the part to be detected, the band-pass filter and the photoelectric sensor;
the light passing through the band-pass filter is diffuse transmission light penetrating through the part to be detected.
In some embodiments, the light source elements are symmetrically arranged in light source element mounting areas on the light source circuit board, so that overlapping parts of all the light source element irradiation areas cover the part to be tested and respectively emit near infrared light with respective wavelengths in sequence; the light source element mounting area may be rectangular, circular, etc.; the light source circuit board may be rectangular, circular, etc.
In some embodiments, the transmitting end optical lens group further comprises at least one transmitting end convex lens, preferably two plano-convex lenses; the path through which the light emitted by the light source element of the reflective emission module passes is the emission end concave mirror, the emission end convex lens, the part to be detected, the band-pass filter and the photoelectric sensor in sequence.
In some embodiments, a light source circuit board light-passing hole is formed in the middle of the light source circuit board, and the light converged by the concave mirror at the emitting end passes through the light source circuit board light-passing hole to reach the lens-free receiving module; the light source elements are arranged around the light through holes of the light source circuit board.
In some embodiments, the bandpass filter does not allow light of a wavelength less than the minimum wavelength emitted by the light source element to pass, nor does it allow light of a wavelength greater than the maximum wavelength emitted by the light source element to pass. The band-pass filter is arranged between the light passing hole and the photoelectric sensor, and is preferably arranged at the light passing hole so as to save equipment space.
In some embodiments, the analyte fixation device further comprises a mechanical switch, wherein the contact of the part to be detected triggers the mechanical switch, thereby activating the emitting module and the photoelectric sensor.
In some embodiments, the multiband near infrared light emitting shooting device further comprises a connecting and fixing component device for respectively connecting and fixing each component, a plurality of buckles are arranged on the connecting and fixing component device for installing and fixing each component, the connecting and fixing component device simplifies the installation of each component, the installation and fixing of each component become simple integral insertion like building blocks, and the multiband near infrared light emitting shooting device does not need to perform other adjustment on light path convergence and shooting focusing once being installed.
In some embodiments, the light source element is an LED lamp; the light source temperature control system is a semiconductor refrigerator; the photoelectric sensor for undistorted microspur shooting is an organic pattern photoelectric sensor, and the organic photoelectric sensor has the characteristics of mechanical flexibility, easiness in processing, adjustable photoelectric characteristic and excellent light sensing performance. Because the organic photoelectric sensor has low requirement on imaging object distance, lens focusing is not needed when the organic photoelectric sensor is used for micro-distance imaging.
In some embodiments, the light source element can emit light with a plurality of wavelengths between the wave bands of 750-2250 nm according to the detection purpose; the band-pass filter can allow light in a certain wave band interval in the wave band of 750-2250 nm to pass through according to the wavelength of the light emitted by the light source element; the photoelectric sensor can shoot near infrared images with a plurality of wavelengths in a wave band of 700-2500 nm according to the wavelength of the light emitted by the light source element.
In some embodiments, the photographing device is used for measuring blood glucose index and hemoglobin concentration of anemia of the user, etc.; the wave band of the light emitted by the light source element is 750-1000 nm; the band-pass filter allows light in a band range of 750-1000 nm to pass through; the photoelectric sensor can shoot near infrared images with a plurality of wavelengths in a wave band of 750-1000 nm.
In some embodiments, the camera is used to measure uric acid indicators of a user; the wave band of the light emitted by the light source element is 1550-1650 nm; the band-pass filter allows light in a 1550-1650 nm wave band interval to pass through; the photoelectric sensor can shoot near infrared images with a plurality of wavelengths in 1550-1650 nm wave bands.
The data acquisition method by using the multiband near infrared light-emitting shooting device comprises the following acquisition steps:
placing a part to be detected on the detection object fixing device, wherein the part to be detected triggers the mechanical switch through direct contact, and the mechanical switch starts the transmitting module and the photoelectric sensor through the camera board;
the light source elements sequentially emit near infrared light with respective wavelengths, and the wavelengths of the light emitted by the light source elements are the same at the same time;
The photoelectric sensor is matched with the time of the light source element to sequentially emit near infrared light with respective wavelengths, and continuously collects near infrared images of the to-be-detected part after a plurality of frames of near infrared light with the wavelengths pass through the to-be-detected part at each wavelength in sequence;
screening at least one frame in the near infrared image of the part to be detected for data pre-processing, and applying the processed near infrared image of the part to be detected as a data set to a subsequent detection algorithm.
The near infrared image of the part to be detected comprises but is not limited to a photo, a continuous video clip, a spectrogram and the like.
Preferably, after the photoelectric sensor collects the near infrared image of the part to be measured under the previous wavelength and confirms that the image can meet the collection purpose, the light source element which emits near infrared light of the previous wavelength is switched to the light source element which emits near infrared light of the next wavelength by emitting a feedback signal until the near infrared light images under all the wavelengths are collected.
The invention also provides another multiband near infrared luminous shooting device, which has the following technical scheme:
a multi-band near infrared luminous shooting device comprises a transmitting module and a lens-free receiving module;
the emitting module comprises at least one light source element and an emitting end optical lens group; the transmitting end optical lens group comprises at least one transmitting end convex lens;
The lens-free receiving module comprises a band-pass filter and a photoelectric sensor, and the photoelectric sensor is a photoelectric sensor for undistorted macro shooting; the undistorted macro-photographing photoelectric sensor is a photoelectric sensor capable of performing undistorted imaging in a macro scene, and an organic photoelectric sensor (OPD) is one of the most widely used at present.
The path through which the light emitted by the light source element of the emission module passes is sequentially the emission end optical lens group, the part to be detected, the band-pass filter and the photoelectric sensor.
The light passing through the band-pass filter is diffuse transmission light penetrating through the part to be detected.
In some embodiments, the light source elements are symmetrically arranged in light source element mounting areas on the light source circuit board, so that overlapping parts of all the light source element irradiation areas cover the part to be tested and respectively emit near infrared light with respective wavelengths in sequence; the light source element mounting area is positioned on the light source circuit board and can be rectangular, circular and the like; the light source circuit board is round or rectangular.
In some embodiments, the analyte fixation device further comprises a mechanical switch, wherein the contact of the part to be detected triggers the mechanical switch, thereby activating the emitting module and the photoelectric sensor.
In some embodiments, the light source element is an LED lamp; the light source temperature control system is a semiconductor refrigerator (TEC); the photoelectric sensor for undistorted microspur shooting is an organic pattern photoelectric sensor, and the organic photoelectric sensor has the characteristics of mechanical flexibility, easiness in processing, adjustable photoelectric characteristic and excellent light sensing performance. Because the organic photoelectric sensor has low requirement on imaging object distance, lens focusing is not needed when the organic photoelectric sensor is used for micro-distance imaging.
In some embodiments, the light source element can emit light with a plurality of wavelengths between the wave bands of 750-2250 nm according to the detection purpose; the band-pass filter can allow light in a certain wave band interval in the wave band of 750-2250 nm to pass through according to the wavelength of the light emitted by the light source element; the photoelectric sensor can shoot near infrared images with a plurality of wavelengths in a wave band of 700-2500 nm according to the wavelength of the light emitted by the light source element.
The data acquisition method by using the multiband near infrared light-emitting shooting device comprises the following acquisition steps:
placing a part to be detected on the detection object fixing device, wherein the part to be detected triggers the mechanical switch through direct contact, and the mechanical switch further starts the transmitting module and the photoelectric sensor;
The light source elements sequentially emit near infrared light with respective wavelengths, and the wavelengths of the light emitted by the light source elements are the same at the same time;
the photoelectric sensor is matched with the time of the light source element to sequentially emit near infrared light with respective wavelengths, and continuously collects near infrared images of the to-be-detected part after a plurality of frames of near infrared light with the wavelengths pass through the to-be-detected part at each wavelength in sequence;
screening at least one frame in the near infrared image of the part to be detected for data pre-processing, and applying the processed near infrared image of the part to be detected as a data set to subsequent application.
The near infrared image of the part to be detected comprises but is not limited to a photo, a continuous video clip, a spectrogram and the like.
Preferably, after the photoelectric sensor collects the near infrared image of the part to be measured under the previous wavelength and confirms that the image can meet the collection purpose, the light source element which emits near infrared light of the previous wavelength is switched to the light source element which emits near infrared light of the next wavelength by emitting a feedback signal until the near infrared light images under all the wavelengths are collected.
The invention has the beneficial effects that:
the light source elements on the multiband near infrared light-emitting shooting device can respectively emit light with different wavelengths, can collect a plurality of groups of detection data with different wavelengths in one detection, and is beneficial to improving the detection precision; in addition, the shooting device uniformly arranges the light source elements on the light source circuit board, so that the overlapping part of the irradiation areas of all the light source elements covers the area to be detected, errors caused by different positions of the light source elements are reduced when data are acquired in multiple bands, and the transmitting end convex lenses are arranged in the transmitting end lens group, so that the light source can realize uniformity while meeting convergence, and can be finally and uniformly converged in the detection area, and the detection precision is improved; and the receiving module is provided with a band-pass filter which only allows near infrared light in a specific wave band interval emitted by the light source component to pass through so as to filter other light, thereby avoiding interference of the light in other wave bands in the environment light, reducing noise and further improving detection accuracy.
The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.
Drawings
Fig. 1 is a schematic diagram of a multiband near infrared light emitting camera.
Fig. 2 is a schematic diagram of a light source circuit board structure.
Fig. 3 is an optical path diagram of the multiband near infrared light emission imaging device.
Fig. 4 is another schematic structural diagram of a multiband near infrared light-emitting photographing device
Fig. 5 is another optical path diagram of the multiband near infrared light emission photographing apparatus.
Fig. 6 is a flow chart of data acquisition using a multiband near infrared light emitting camera.
Fig. 7 is another flow chart of data acquisition using a multiband near infrared luminescence camera.
Fig. 8 is a schematic structural diagram of a multiband near infrared light emitting camera with a reflective emission module.
Fig. 9 is a schematic diagram of a light source circuit board structure of a multiband near infrared light-emitting camera with a reflective emission module.
Fig. 10 is an optical path diagram of a multiband near infrared light-emitting photographing device having a reflective emission module.
Fig. 11 is a schematic structural diagram of a multiband near-infrared light-emitting photographing device having a reflective emission module and a lens-free receiving module.
Fig. 12 is an optical path diagram of a multiband near infrared light-emitting photographing device having a reflective emission module and a lens-free receiving module.
Fig. 13 is a schematic diagram of a multiband near infrared light-emitting photographing device having a lens-free receiving module.
Fig. 14 is an optical path diagram of a multiband near infrared light-emitting photographing device having a lens-free receiving module.
Description of the drawings: 1a, an emission module, 111, a light source circuit board, 112, a light source element, 113, a light source circuit board light-passing hole, 114, a concave mirror, 115, a light source mounting area, 12, an emission end convex lens, 13, an emission end concave mirror, 2a, a receiving module, 21, a band-pass filter, 22, a shooting part, 221, a wide-angle lens, 222, a receiving end convex lens, 223, a spectral filter, 224, a photoelectric sensor, 225, a camera board, 226, an imaging channel, 227, a lens frame, 1b, a reflective emission module, 2b, and a lens-free receiving module.
Detailed Description
The invention is further described with reference to the following detailed description in order to make the technical means, the inventive features, the achieved objects and the effects of the invention easy to understand. The present invention is not limited to the following examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention.
As shown in fig. 1 and 3, one embodiment of the present invention is a multiband near infrared light-emitting shooting device, which includes a transmitting module 1a, a detection object fixing device and a receiving module 2a, wherein a part to be detected is a fingertip epidermis, and the purpose of detection is to non-invasively detect a blood sugar value or a uric acid value of a human body.
The emission module 1a includes a light source element 112, an emission-side optical lens group. The transmitting optical lens group comprises two transmitting convex lenses 12, preferably two plano-convex lenses, with the convex surfaces of the plano-convex lenses facing inward. The light source elements 112 are LED lamps (fig. 2), each light source element 112 emits only one light wavelength, the four light source elements 112 are symmetrically arranged in the light source element mounting area, each light source element 112 emits only one light wavelength, and the wavelengths of the light emitted by the four light source elements 112 are different. It should be noted that fig. 1 and 3 omit two light source elements 112 for convenience of reading. The symmetrical arrangement of the LED lamps is combined with the emission end optical lens group, so that near infrared light emitted by the LED lamps at different positions is converged by the emission end optical lens group and then covers the detection position, and the brightness is uniformly irradiated on the detection area. The back surface of the light source circuit board 111 is provided with a light source temperature control system (not shown), which is a semiconductor refrigerator (TEC). The wavelength of the near infrared light emitted by the LED lamp can influence the result of later data acquisition and analysis, and the temperature stability of the working time of the LED lamp can be ensured due to the existence of the TEC, so that the wavelength of the near infrared light emitted by the working time of the LED lamp can not be influenced by working and environmental temperature, the accuracy of the result is improved, and the detection result error caused by different working and environmental temperature is reduced.
In some embodiments, one light source element 112 emits light of only one wavelength, and a plurality of light source elements 112 emit light of the same wavelength at the same time, for example, three LED lamps are simultaneously turned on to emit near infrared light of a first wavelength, three other LED lamps are simultaneously turned on to emit near infrared light of a second wavelength, three other LED lamps are simultaneously turned on to emit near infrared light of a third wavelength, and three other LED lamps are simultaneously turned on to emit near infrared light of a fourth wavelength.
In some embodiments, as shown in fig. 4 and 5, each light source element 112 is provided with a concave mirror 114 to respectively collect light emitted from the light source element 112, and the light source element 112 is mounted on a concave surface of the concave mirror 114. The concave mirror 114 is configured to facilitate optical path adjustment of the near infrared light emitted from the light source element 112, so that the near infrared light after adjustment is uniformly converged at a specified region of the portion to be measured. It should be noted that fig. 4 and 5 omit the two light source elements 112 and the concave mirror 114 for convenience of reading.
In some embodiments, as shown in fig. 8-12, the emission module is a reflective emission module 1b, and the reflective emission module 1b includes a light source element 112 and an emission-side optical lens group, where the emission-side optical lens group includes one emission-side concave mirror 31 and two emission-side convex lenses 12, preferably two plano-convex lenses. A light-passing hole 113 (fig. 9) of the light source circuit board is provided in the middle of the square light source circuit board 111, so that the light converged by the concave mirror 31 at the emitting end can smoothly pass through the light source circuit board 111 to reach the plano-convex lens of the optical lens group at the emitting end, and four light source elements 112 are symmetrically arranged around the periphery of the light-passing hole 113 of the light source circuit board in the light source element mounting area. It should be noted that fig. 8 and 10 omit two light source elements 112 for convenience of reading. The back surface of the light source circuit board 111 is provided with a light source temperature control system (not shown). The light path of the photographing device is that light emitted by the light source element 112 of the reflective emission module sequentially passes through a concave mirror 31 at the emission end, two plano-convex lenses and a part to be measured, and the light after diffuse transmission through the part to be measured enters the receiving module 2a.
The detection object fixing device (not shown) is internally provided with elastic substances, such as silica gel, which are respectively positioned on the upper side and the lower side of the finger to limit and fix the position of the finger so as to eliminate the fat and thin of different fingers and the position change of the part to be detected caused by the difference of the placement positions, reduce the operation of adjusting the light path, increase the convenience of a user and ensure the measurement accuracy. Two sides of the detection object fixing device are respectively provided with two detection object fixing device light through holes, so that light can smoothly enter the detection object fixing device to reach a part to be detected and diffuse transmission to the receiving module 2a, a mechanical switch is further arranged in the detection object fixing device, after the fingertip is placed, the mechanical switch is triggered through direct contact, and then the transmitting module and the photoelectric sensor 224 are started.
The receiving module 2a includes a bandpass filter 21 and a photographing part 22. The photographing part 22 includes a lens frame 227 for supporting a lens, a camera board 225, and a receiving optical lens set, a spectral filter 223 and a photoelectric sensor 224 sequentially arranged, the receiving optical lens set includes a wide-angle lens 221 and a receiving convex lens 222, an imaging channel 226 is formed between the wide-angle lens 221 and the camera board 225, the receiving convex lens 222 and the spectral filter 223 are disposed in the imaging channel, the camera board 225 is a PBC electronic circuit board and is associated with the transmitting module 1a, and the photoelectric sensor 224 is mounted on the camera board 225 and can be externally connected with a processor to receive instructions of the processor to complete photographing, data acquisition, data set analysis and transmission, and the like. In this embodiment, the band-pass filter 21 and the spectral filter 223 can effectively filter out the interference light outside the shooting and data acquisition requirements, so as to greatly realize the shooting accuracy and promote the effective judgment of scientific analysis and data processing.
In some embodiments, it is preferable to use an organic photoelectric sensor (OPD), and as shown in fig. 11 to 14, the receiving module has no lens frame, no camera lens plate, no receiving-end optical lens group, no spectral filter, and only the bandpass filter 21 and the photoelectric sensor 224, which is called a lens-less receiving module 2b. The photosensor 224 in the lens-free receiving module 2b is a photosensor for distortion-free macro shooting. The undistorted micro-distance shooting photoelectric sensor is a photoelectric sensor capable of performing undistorted imaging in a micro-distance scene, has the characteristics of mechanical flexibility, easiness in processing, adjustable photoelectric characteristic and excellent light sensing performance, and has low requirements on imaging object distance, so that lens focusing is not required when the photoelectric sensor is used for micro-distance imaging, and the organic photoelectric sensor (OPD) is the undistorted micro-distance shooting photoelectric sensor. The light path of the photographing device is that the light emitted by the light source element 112 sequentially passes through the emission end optical lens group and the part to be measured, and the light after diffuse transmission through the part to be measured passes through the band-pass filter 21 and finally reaches the photoelectric sensor 224.
In some embodiments, the shooting device further comprises a connecting and fixing component device for respectively connecting and fixing the components, and a plurality of buckles are arranged on the connecting and fixing component device for fixing the components to be connected, in particular, the shooting component 22 is simply integrated and inserted in a manner similar to building blocks, so that once the multi-band near infrared light emitting shooting device is installed, other adjustment on light path convergence and shooting focusing is not needed.
In the multiband near-infrared light-emitting imaging device according to the present embodiment, the light source element 112 can emit light having any of a plurality of wavelengths between the wavelength bands of 750 to 2250nm, and the wavelength of the emitted light is determined according to the detection purpose; the bandpass filter 21 allows light in any one of the 750 to 2250nm wavelength bands to pass therethrough, the allowed wavelength band being determined according to the wavelength of light emitted from the light source element 112; the spectral filter 223 allows light of any number of wavelengths in the 750-2250 nm band to pass, and the number of wavelengths allowed to pass is determined according to the wavelength of the light emitted from the light source element 112; the photosensor 224 is black and white and can capture near infrared images at any number of wavelengths in the 700-2500 nm band, allowing the captured near infrared images at the number of wavelengths to be determined based on the wavelength of light emitted by the light source element 112.
In some embodiments, the camera is used to measure the blood glucose level and the hemoglobin concentration of anemia of the user, etc.; the light emitted from the light source element 112 has a wavelength of 750-1000 nm; the band-pass filter 21 allows light in a band range of 750 to 1000nm to pass; the spectral filter 223 allows light of several wavelengths in the 750-1000 nm band to pass; the photosensor 224 is black and white and can take near infrared images of several wavelengths in the 750-1000 nm band.
In some embodiments, the camera is used to measure uric acid indicators of the user; the light source element 112 emits light with a wavelength band of 1550-1650 nm; the band-pass filter 21 allows light in a band range of 1550 to 1650nm to pass therethrough; the spectral filter 223 allows light of several wavelengths in the 1550-1650 nm band to pass; the photosensor 224 is black and white and can take near infrared images of several wavelengths in the 1550-1650 nm band.
As shown in fig. 3, the optical path of the multiband near infrared light-emitting photographing device described in this embodiment is that light emitted by the light source element 112 of the emission module sequentially passes through the two emission-end convex lenses 12 and the part to be measured, the light transmitted through the part to be measured enters the imaging channel 226 through the band-pass filter 21, sequentially passes through the wide-angle lens 221, the receiving-end convex lens 222, the beam-splitting filter 223, and finally reaches the photoelectric sensor 224, and the light specifically enters from the plane of one plano-convex lens when passing through the two emission-end convex lenses 12, passes through the convex surface, enters the convex surface of the other plano-convex lens, and exits from the plane of the plano-convex lens. The dashed line and the solid line paths represent the paths of light emitted from the left and right light source elements 112, respectively.
In some embodiments, as shown in fig. 5, the optical path of the multiband near infrared light-emitting photographing device is that the light emitted by the light source element 112 of the emission module sequentially passes through the concave mirror 114, the two emission end convex lenses 12 and the part to be measured, the light after diffuse transmission of the part to be measured enters the imaging channel 226 through the band-pass filter 21, sequentially passes through the wide-angle lens 221, the receiving end convex lens 222, the beam-splitting filter 223 and finally reaches the photoelectric sensor 224, and the light specifically passes through the plane of one plano-convex lens when passing through the two emission end convex lenses 12, passes through the convex surface, enters the convex surface of the other plano-convex lens and exits from the plane of the plano-convex lens.
In use, as shown in fig. 6, after a fingertip is placed in the detection object fixing device, the fingertip contacts and triggers the mechanical switch so as to start the photoelectric sensor 224 and the light source elements 112 through the camera board 225, after the light source elements 112 are started, the plurality of light source elements 112 sequentially emit near infrared light with respective wavelengths, and the photoelectric sensor 224 sequentially collects a plurality of fingertip near infrared images after the near infrared light with respective wavelengths passes through the fingertip at each wavelength in cooperation with the time that the light source elements 112 sequentially emit the near infrared light with respective wavelengths.
Then, the fingertip is taken out, the camera board 225 receives an instruction of an external processor, the screened several frames of photos are stored as original data and are subjected to data preprocessing, the processed fingertip near infrared image is used as a data set to be applied to a subsequent detection algorithm, a required detection value is finally obtained, and finally, the mechanical switch is turned off.
As shown in fig. 6, an embodiment of the present invention related to data acquisition is implemented in conjunction with the multiband near infrared light emitting photographing device shown in fig. 1, 4 and 8, specifically, after a fingertip is placed in the object to be detected fixing device, the fingertip contacts trigger a mechanical switch so as to start the photoelectric sensor 224 and the light source element 112 through the camera board 225, after the light source element 112 is started, the plurality of light source elements 112 sequentially emit near infrared light with respective wavelengths, and the photoelectric sensor 224 sequentially cooperates with the light source element 112 to sequentially emit the near infrared light with respective wavelengths for a period of time, and at each wavelength, near infrared images of the fingertip after a plurality of frames of near infrared light with the wavelengths pass through the fingertip are sequentially acquired. In this embodiment, the first LED lamp is turned on to emit near infrared light of a first wavelength, and at the same time, the photosensor 224 starts to collect 3 frames of near infrared images of the fingertip after the near infrared light of the first wavelength passes through the fingertip, and screens out the optimal 1 frame. After the screening is finished, the first LED lamp is turned off, the second LED lamp is turned on, and emits near infrared light of a second wavelength, and at the same time, the photosensor 224 starts to collect 3 frames of near infrared images of the fingertip after the near infrared light of the second wavelength passes through the fingertip, and screens out the optimal 1 frame. After the screening is finished, the second LED lamp is turned off, and the third LED lamp is turned on, and emits near infrared light of a third wavelength, and at the same time, the photosensor 224 starts to collect 3 frames of near infrared images of the fingertip after the near infrared light of the third wavelength passes through the fingertip, and screen out the optimal 1 frame. After the screening is finished, the third LED lamp is turned off, and the fourth LED lamp is turned on, so that the fourth LED lamp emits the near infrared light with the fourth wavelength, and at the same time, the photosensor 224 starts to collect 3 frames of near infrared images of the fingertip after the near infrared light with the fourth wavelength passes through the fingertip, and screens out the optimal 1 frame.
Then, the fingertip is taken out, the camera board 225 receives an instruction of an external processor to perform data preprocessing on the screened 4 frames of photos, the processed fingertip near infrared image is used as a data set to be applied to a subsequent detection algorithm, a required detection value is finally obtained, and finally the mechanical switch is turned off.
In another embodiment of the present invention, as shown in fig. 1, 4 and 8, each light source element 112 can emit light with several different wavelengths, and only emits light with one wavelength at a time; at the same time, the wavelengths of the light emitted by the light source element 112 are the same, specifically, the four LED lamps are turned on simultaneously to emit near infrared light of a first wavelength, then the light emitted by the four LED lamps is switched from near infrared light of the first wavelength to near infrared light of a second wavelength at the same time, and so on.
When the multiband near infrared light emitting photographing device of the above embodiment is used for data collection, the collection steps are as shown in fig. 7, after a fingertip is placed in the detection object fixing device, the fingertip contacts and triggers the mechanical switch so as to start the photoelectric sensor 224 and the light source element 112 through the camera board 225, after the light source element 112 is started, the light source element 112 sequentially emits a plurality of groups of near infrared light with different wavelengths, the photoelectric sensor 224 cooperates with the light source element 112 to sequentially emit a plurality of near infrared light with different wavelengths for a period of time, and a plurality of frames of near infrared images of the fingertip after the near infrared light with the wavelength passes through the fingertip are sequentially collected at each wavelength. In this embodiment, the four LED lamps are turned on to emit the near infrared light of the first wavelength, and at the same time, the photosensor 224 starts to collect 3 frames of near infrared images of the fingertip after the near infrared light of the first wavelength passes through the fingertip, and screens out the optimal 1 frame. After the screening is finished, the near infrared light with the first wavelength emitted by the four LED lamps is switched to the near infrared light with the second wavelength, and at the same time, the photoelectric sensor 224 starts to collect 3 frames of near infrared images of the fingertip after the near infrared light with the second wavelength passes through the fingertip, and screens out the optimal 1 frame. After the screening is finished, the near infrared light with the second wavelength emitted by the four LED lamps is switched to the near infrared light with the third wavelength, and at the same time, the photoelectric sensor 224 starts to collect 3 frames of near infrared images of the fingertip after the near infrared light with the third wavelength passes through the fingertip, and screens out the optimal 1 frame. After the screening is finished, the near infrared light with the third wavelength emitted by the four LED lamps is switched to the near infrared light with the fourth wavelength, and at the same time, the photoelectric sensor 224 starts to collect 3 frames of near infrared images of the fingertip after the near infrared light with the fourth wavelength passes through the fingertip, and screens out the optimal 1 frame.
Then, the fingertip is taken out, the camera board 225 receives an instruction of an external processor to perform data preprocessing on the screened 4 frames of photos, the processed fingertip near infrared image is used as a data set to be applied to a subsequent detection algorithm, a required detection value is finally obtained, and finally the mechanical switch is turned off.
As shown in fig. 6, another embodiment of the present invention related to data acquisition is implemented in conjunction with the multiband near infrared light emitting camera shown in fig. 11 and 13, and the specific steps are similar to those described above with respect to fig. 6, except that the photoelectric sensor 224 and the light source element 112 are not required to be directly activated by a camera board.
As shown in fig. 7, another embodiment of the present invention related to data acquisition is implemented in conjunction with the multiband near infrared light emitting camera shown in fig. 11 and 13, and the specific steps are similar to those described above with respect to fig. 7, except that the photoelectric sensor 224 and the light source element 112 are not required to be directly activated by a camera board.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention without requiring creative effort by one of ordinary skill in the art. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (11)
1. A multi-band near infrared luminous shooting device is characterized in that,
comprises a transmitting module and a receiving module;
the emitting module comprises at least one light source element and an emitting end optical lens group; the light source elements are symmetrically arranged in light source element mounting areas on the light source circuit board, so that overlapping parts of all light source element irradiation areas cover the part to be tested and respectively and sequentially emit near infrared light with respective wavelengths; the transmitting end optical lens group comprises at least one transmitting end convex lens;
the receiving module comprises a band-pass filter and a photoelectric sensor; the photoelectric sensor is a photoelectric sensor for undistorted microspur shooting;
the path of the light emitted by the light source element of the emitting module is sequentially the emitting end optical lens group, the part to be detected, the band-pass filter and the photoelectric sensor;
the light passing through the band-pass filter is diffuse transmission light penetrating through the part to be detected.
2. The multi-band near infrared light emitting camera of claim 1, wherein the emission module further comprises at least one concave mirror for converging light emitted from the light source element; the light source elements are in one-to-one correspondence with the concave mirrors; the path through which the light emitted by the light source element of the emission module passes is the concave mirror, the emission end optical lens group, the part to be detected, the band-pass filter and the photoelectric sensor in sequence.
3. The multiband near infrared light-emitting device according to claim 1, wherein the band pass filter allows neither light having a wavelength smaller than a minimum wavelength emitted from the light source element nor light having a wavelength larger than a maximum wavelength emitted from the light source element to pass.
4. The multi-band near infrared light emitting camera of claim 1, wherein the emission module further comprises a light source temperature control system mounted on the back of the light source circuit board.
5. The multi-band near infrared light emitting camera of claim 4, further comprising a fixture for positioning a part to be measured; the detection object fixing device is internally provided with an elastic substance for limiting and fixing the position of the part to be detected; the two sides of the detection object fixing device are respectively provided with a detection object fixing device light-passing hole, so that light transmitted by the emission end optical lens group passes through the detection object fixing device light-passing holes on one side to reach a part to be detected, passes through the detection object fixing device light-passing holes on the other side after diffuse transmission of the part to be detected, and reaches the receiving module.
6. The multi-band near infrared light emitting device of claim 5, wherein the object-to-be-detected fixture further comprises a mechanical switch, wherein contact of the part to be detected triggers the mechanical switch, thereby activating the emitting module and the photoelectric sensor.
7. The device of claim 6, further comprising means for connecting and fixing the respective components, wherein a plurality of fasteners are provided for fixing the components.
8. The multiband near infrared light-emitting camera of claim 4, wherein the light source element is an LED lamp; the light source temperature control system is a semiconductor refrigerator; the undistorted micro-distance shooting photoelectric sensor is an organic pattern photoelectric sensor.
9. The device of claim 1, wherein the light source element emits light with several wavelengths between 750-2250 nm according to the detection purpose; the band-pass filter can allow light in a certain wave band interval in the wave band of 750-2250 nm to pass through according to the wavelength of the light emitted by the light source element; the photoelectric sensor can shoot near infrared images with a plurality of wavelengths in a wave band of 700-2500 nm according to the wavelength of the light emitted by the light source element.
10. A method for data acquisition using a multiband near infrared light emitting camera according to any one of claims 6 to 9, characterized in that the acquisition steps are as follows:
placing a part to be detected on the detection object fixing device, wherein the part to be detected triggers the mechanical switch through direct contact, and the mechanical switch further starts the transmitting module and the photoelectric sensor;
the light source elements sequentially emit near infrared light with respective wavelengths, and the wavelengths of the light emitted by the light source elements are the same at the same time;
the photoelectric sensor is matched with the time of the light source element to sequentially emit near infrared light with respective wavelengths, and continuously collects near infrared images of the to-be-detected part after a plurality of frames of near infrared light with the wavelengths pass through the to-be-detected part at each wavelength in sequence;
screening at least one frame in the near infrared image of the part to be detected for data pre-processing, and applying the processed near infrared image of the part to be detected as a data set to subsequent application.
11. The method according to claim 10, wherein after the photoelectric sensor collects the near infrared image of the part to be measured at the previous wavelength and confirms that the image can meet the collection purpose, the light source element emitting the near infrared light at the previous wavelength is switched to the light source element emitting the near infrared light at the next wavelength by the feedback signal until the near infrared light images at all wavelengths are collected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310842547.5A CN116898430A (en) | 2023-06-25 | 2023-06-25 | Multi-band near infrared luminous shooting device and data acquisition method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310749006.8A CN116712069A (en) | 2023-06-25 | 2023-06-25 | Multi-band near infrared luminous shooting device and data acquisition method |
| CN202310842547.5A CN116898430A (en) | 2023-06-25 | 2023-06-25 | Multi-band near infrared luminous shooting device and data acquisition method |
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| CN202310842547.5A Pending CN116898430A (en) | 2023-06-25 | 2023-06-25 | Multi-band near infrared luminous shooting device and data acquisition method |
| CN202310843158.4A Pending CN116898431A (en) | 2023-06-25 | 2023-06-25 | Multi-band near infrared luminous shooting device and data acquisition method |
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| CN202310842324.9A Pending CN116898429A (en) | 2023-06-25 | 2023-06-25 | Multi-band near infrared luminous shooting device and data acquisition method |
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| CN116898429A (en) | 2023-10-20 |
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