CN215341116U - Iris identification and drug absorption detection equipment - Google Patents
Iris identification and drug absorption detection equipment Download PDFInfo
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- CN215341116U CN215341116U CN202121499009.3U CN202121499009U CN215341116U CN 215341116 U CN215341116 U CN 215341116U CN 202121499009 U CN202121499009 U CN 202121499009U CN 215341116 U CN215341116 U CN 215341116U
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Abstract
The utility model discloses iris identification and drug absorption detection equipment, which belongs to the field of biological identification and comprises a lens silo and a lens cone, wherein the lens cone comprises a first lens cone and a second lens cone which are not transparent mutually, the front end surface and the rear end surface of the lens cone silo and the first lens cone are both transparent, the front end surface of the second lens cone is not transparent and the rear end surface of the second lens cone is transparent, and a laser piercing source is arranged in the second lens cone; the lens cone is arranged in the lens cone bin in a pluggable manner; the place ahead of mirror silo is provided with two sets of collection module, and every collection module all includes a near-infrared camera lens, a set of no red near-infrared fill light that explodes, a set of white light fill light and a sight guiding device. The utility model can realize binocular iris image acquisition, monocular iris image acquisition and virus absorption detection on the same equipment, has high equipment integration level and good flexibility, and guides the eye focus of a user through the eye guide device to avoid the eye contact dissociation.
Description
Technical Field
The utility model relates to the field of biological identification, in particular to iris identification and drug absorption detection equipment.
Background
At present, the method for detecting drug addicts by utilizing pupil characteristics is a common method, when light rays stimulate eyes, the pupils of the eyes have contraction actions, along with the adaptation of the eyes to the light rays, the pupils have relaxation actions, and the control of the contraction and relaxation actions is controlled by cerebral parasympathetic nerves. After a human body takes the drug, the influence on the cerebral cortex is irreversible, and the response of the brain to the pupil contraction and relaxation control after taking the drug is obviously different from that of a person who does not take the drug, so that whether the person to be tested takes the drug or not can be distinguished through the response characteristic of the pupil to light stimulation.
During virus absorption detection, the identity of a detected person needs to be identified or checked frequently, iris identification is a common identity identification method, and iris identification and virus absorption detection are both used for collecting eye images, so that iris identification and virus absorption detection are integrated into one device, the use of the device can be reduced, and the detection efficiency is improved.
At present, in the process of collecting pupil images in virus absorption detection and iris images in iris recognition, infrared light supplement is needed, but the infrared light supplement adopted for collecting the pupil images in the virus absorption detection and the iris images in the iris recognition can affect each other, and then the accuracy of the virus absorption detection and the iris recognition is affected. The device for drug absorption detection by using the pupil in the prior art cannot acquire the iris and cannot realize identity identification through iris identification.
During drug absorption detection, in order to ensure the accuracy of collected data of contraction and relaxation of pupils of human eyes, the environment for collecting images of the pupils of human eyes needs to be as dark as possible, but the catch of a collected user is not easy to focus in the dark environment, the catch is easy to dissociate, and the collected images of the pupils are inaccurate.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems that virus absorption detection and iris acquisition cannot be carried out on the same equipment in the prior art and the eye spirit of a user is easy to dissociate in a dark environment, the utility model provides the iris identification and virus absorption detection equipment, which can realize binocular iris image acquisition, monocular iris image acquisition and virus absorption detection on the same equipment, has high equipment integration level and good flexibility, and guides the eye spirit of the user to focus through the eye light guide device so as to avoid the eye spirit dissociating.
The technical scheme provided by the utility model is as follows:
an iris recognition and drug-taking detection device comprising a lens cartridge and a lens barrel, wherein:
the lens cone comprises a first lens cone and a second lens cone which are not light tight, the front end face and the rear end face of the first lens cone are light-transmitting, the front end face of the second lens cone is light-tight, the rear end face of the second lens cone is light-transmitting, and a stimulating light source for providing pupil stimulating laser for the interior of the second lens cone is arranged on the second lens cone;
the front end surface and the rear end surface of the lens silo are both light-transmitting, and the lens barrel is arranged in the lens silo in a pluggable manner;
the front of the lens silo is provided with two groups of acquisition modules, the positions of the two groups of acquisition modules correspond to the positions of the first lens cone and the second lens cone inserted into the lens silo, and each group of acquisition modules comprises a near-infrared lens, a group of red-explosion-free near-infrared light supplement lamps, a group of white light supplement lamps and a gaze guiding device.
Further, the gaze guidance device comprises a dim light lamp or an animation display device, and the dim light lamp or the animation display device flickers or continuously lights up.
Further, the positions of the first lens barrel and the second lens barrel inserted into the lens silo can be reversed.
Furthermore, the first lens barrel and the second lens barrel are of an integrated structure, the integrated structure comprises a light-tight casing with a closed front end face and an open rear end face, a light shading plate for separating the light-tight casing into the first lens barrel and the second lens barrel is arranged in the light-tight casing, and a light-transmitting window is formed in the front end face of the first lens barrel.
Furthermore, a through hole is formed in the front end face of the second lens barrel, the stimulating light source is arranged on a light source circuit board, the light source circuit board is fixed on the outer side of the front end face of the second lens barrel, and the stimulating light source penetrates through the through hole to provide pupil stimulating laser for the second lens barrel.
Furthermore, the two groups of acquisition modules are arranged on a main circuit board, and a near-infrared optical filter is arranged between the main circuit board and the front end face of the mirror silo.
Furthermore, a probe is arranged on the front end face of the second lens barrel, and a group of probe contacts matched with the probe are respectively arranged on the front part of the positions, inserted into the lens silo, of the first lens barrel and the second lens barrel on the main circuit board.
Further, when the probe is not inserted into the probe contact, the level at the probe contact is a first level; when the probe is inserted into the probe contact, the electrical level at the probe contact is a second electrical level.
Further, the probe is arranged on the light source circuit board.
Further, the wavelength of the non-red-explosion near-infrared light supplement lamp is 940nm, the wavelength of the red-explosion near-infrared light supplement lamp is 810nm, the wavelength range of the light transmitted by the near-infrared optical filter is 770nm to 1100nm, and the stimulation light source is a white light source.
Further, the lens cone moves in the lens cone bin through the guide rail sliding groove.
Furthermore, the lens silo is made of light-transmitting materials, a light-tight shell is arranged on the outer surface of the lens barrel silo, and an eye shield made of soft materials is detachably connected to the rear of the lens silo.
The utility model has the following beneficial effects:
the lens cone of the iris identification and drug absorption detection equipment can be arranged in the lens cone bin in a pluggable manner, namely the lens cone can be inserted into the lens cone bin and also can be pulled out of the lens cone bin, and the device can be used in a plug-and-play manner. When the lens cone is pulled out of the lens cone bin, the iris recognition and virus absorption detection equipment collects binocular iris images, and when the lens cone is inserted into the lens cone bin, monocular iris image collection and virus absorption detection can be carried out. The utility model realizes the virus-absorption detection and the iris image acquisition on the same equipment, has high equipment integration level, can realize the binocular iris image acquisition, the monocular iris image acquisition and the virus-absorption detection, and has good flexibility. And the eye focus of the user is guided by the eye light guiding device, so that the eye dissociation is avoided, and the accuracy of the drug inhalation detection data acquisition is improved.
Drawings
FIG. 1 is a perspective view of an iris recognition and virus exposure detection apparatus of the present invention;
FIG. 2 is a cross-sectional view of an iris recognition and virus exposure detection apparatus of the present invention;
FIG. 3 is a schematic diagram of a main circuit board of the iris recognition and virus exposure detection apparatus of the present invention;
FIG. 4 is a driving circuit diagram of two groups of white light supplement lamps on the main circuit board;
FIG. 5 is a driving circuit diagram of the stimulating light source on the light source circuit board;
FIG. 6 is a circuit diagram of the probe contacts on the main circuit board;
fig. 7 is a circuit diagram of a probe on a light source circuit board.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
In the existing virus absorption detection and iris recognition, infrared light supplement is needed, but the infrared light supplement of the virus absorption detection and the iris recognition can affect each other, and the accuracy of the virus absorption detection and the iris recognition is affected. The specific reasons are as follows:
the pupillary light reflex is an unconditional reflex, which means that when one eye is stimulated to contract or relax by light, the other eye can do the actions of pupil contraction or relaxation synchronously like the eye stimulated by light even if the other eye is only in a dark environment. The device for drug absorption detection by using pupils in the prior art uses the principle of pupillary light reflex. The device is mostly in a 'telescope' shape, and is provided with two independent lens cones, wherein one lens cone stimulates one eye by using light control, the pupil contraction and relaxation parameters of the other eye are collected in a totally dark environment in the other lens cone, and whether the device is toxic or not is judged according to the pupil diameter data analysis in the whole collection process.
Pupil imaging during virus absorption detection needs to be performed under near-infrared light supplementary lighting, so that the influence of light on pupils is avoided, the accuracy of data acquisition of contraction and relaxation of the pupils of human eyes is ensured, and the environment for acquiring the pupil images needs to be ensured to be dark as much as possible. Therefore, near-infrared supplementary lighting used in the drug absorption detection should have no red explosion, and the wavelength of the current general near-infrared light without red explosion is 940 nm.
During iris recognition, in order to collect iris characteristic data of different human bodies (brown eyeballs, blue eyeballs and the like) in a matching mode, the wavelength of the optimal near-infrared supplementary lighting collected by the iris is 810-850 nm, but the near-infrared light of the wave band has obvious visible red explosion (the red explosion is in direct proportion to the driving current), and the accuracy of collecting data of contraction and relaxation of pupils of the human eyes in virus absorption detection is influenced. In addition, the infrared light source without red explosion used in the drug absorption detection is not friendly to iris imaging, and the quality of the acquired iris image is poor, so that the iris image is difficult to be used for iris identification.
Therefore, the equipment for drug absorption detection by using the pupil in the prior art cannot acquire the iris and cannot realize identity identification through iris identification.
In order to solve the above problems, the present invention provides an iris identification and drug-taking detection device, as shown in fig. 1-3, comprising a lens cartridge 1 and a lens barrel 2, wherein:
the lens barrel 2 includes a first barrel 3 and a second barrel 4 that are opaque to each other. The first lens barrel 3 and the second lens barrel 4 can be realized in various ways without light transmission, for example: the first barrel 3 and the second barrel 4 are made of opaque materials, or the first barrel 3 and the second barrel 4 are separated by a light shielding structure, and the like, which is not limited in the present invention.
To facilitate understanding of the orientation relationship of the various components of the present invention, as shown in fig. 2, the present invention defines the end near the eye of the subject as the front end and the end far from the eye of the subject as the rear end, and defines the left and right sides with the iris recognition and drug-taking detection device in the position shown in fig. 2.
In the present invention, the front, rear, left and right positions are defined as shown in FIG. 2.
The front end surface and the rear end surface of the first barrel 3 are both transparent. There are various implementations of the first barrel 3, in which both the front end surface and the rear end surface transmit light, and the present invention is not limited to this, for example: the front end face and the rear end face of the first lens barrel 3 are in an open form, or the front end face and the rear end face of the first lens barrel 3 are provided with light-transmitting windows, or the front end face and the rear end face of the first lens barrel 3 are made of light-transmitting materials and the like.
The front end face of the second lens barrel 4 is light-tight and the rear end face is light-tight. The rear end surface of the second barrel 4 can transmit light in various ways, for example: the rear end surface of the second barrel 4 is open, or a light-transmitting window is opened on the rear end surface of the second barrel 4, or the rear end surface of the second barrel 4 is made of light-transmitting material, and the like. The front end surface of the second barrel 4 can be made opaque in various ways, for example: the front end surface of the second barrel 4 is made of opaque material, or the front end surface of the second barrel 4 is coated with an opaque coating, etc.
The second lens barrel 4 is provided with a stimulus light source 5 for providing pupil stimulating light to the inside of the second lens barrel 4.
The front end surface and the rear end surface of the mirror silo 1 are both light-transmitting. The front end face and the rear end face of the mirror silo 1 can be realized in various light transmission modes, which are not limited by the utility model, such as: the front end face and the rear end face of the mirror silo 1 are in an open form, or light-transmitting windows are formed in the front end face and the rear end face of the mirror silo 1, or the front end face and the rear end face of the mirror silo 1 are made of light-transmitting materials, or the mirror silo 1 is made of light-transmitting materials.
The lens barrel 2 is arranged in the lens barrel chamber 1 in a pluggable manner.
Two groups of acquisition modules 100 are arranged in front of the lens silo 1, the positions of the two groups of acquisition modules 100 correspond to the positions of the first lens barrel 3 and the second lens barrel 4 inserted into the lens silo 1, and each group of acquisition modules 100 comprises a near-infrared lens 6, a group of red-explosion-free near-infrared light supplement lamps 7, a group of red-explosion-free near-infrared light supplement lamps 8, a group of white-light supplement lamps 9 and a gaze guiding device 21.
The utility model respectively arranges two near-infrared light supplementing lamps for a first lens cone 3 and a second lens cone 4, wherein a red-explosion-free near-infrared light supplementing lamp 7 is used for supplementing light for pupil images collected in virus absorption detection; and the red explosion near-infrared light supplement lamp 8 is used for supplementing light for collecting iris images in iris recognition. The two near-infrared light supplement lamps are respectively controlled, so that the same equipment integrates the dual functions of virus absorption detection and iris identification.
The pupil can relax in a completely black environment, so that the iris texture extrusion is serious, the normal texture presentation is influenced, the collection and the identification of the iris image are influenced, and in order to collect the high-quality iris image, each near-infrared lens 6 is provided with a group of white light supplement lamps 9, and the dim light irradiation control is carried out on the eyes of people during the collection of the iris image. As shown in fig. 4, the driving circuits of the two groups of white light supplement lamps 9 drive and control the two groups of white light supplement lamps (LEDs 1 and LEDs 3) through output ports (VOUT1 and VOUT2) of the SGM operational amplifier chip, which is SGM3780YTDP 14G.
The iris identification and virus-absorption detection equipment can realize binocular iris image acquisition, monocular iris image acquisition and virus-absorption detection on the same equipment. When the processing capacity of the iris recognition and virus-taking detection equipment is strong, binocular iris image recognition and monocular iris image recognition can be realized.
When the lens barrel 2 is not inserted into the lens silo 1, binocular iris image acquisition (of course, monocular iris image acquisition may also be performed) is performed as follows:
1. the iris identification and drug absorption detection equipment simultaneously turns on the near-infrared lenses 6 and the red-explosion near-infrared light supplement lamps 8 of the two groups of acquisition modules 100 and turns off the red-explosion-free near-infrared light supplement lamps 7 of the two groups of acquisition modules 100; the lens cone 2 is not inserted into the lens silo 1, the lens cone 2 does not participate in the work, and the stimulating light source 5 is in a closed state.
2. In order to prevent pupil dilation in a completely black environment, which causes serious iris texture extrusion and influences normal texture presentation, the two groups of acquisition modules 100 of the white light supplement lamps 9 are turned on, and parameters are driven by software to adjust the brightness level of white light, so that dim light irradiation control is performed on human eyes.
3. And starting iris image acquisition, and acquiring a binocular iris image for binocular iris recognition.
When the lens barrel 2 is inserted into the lens silo 1, virus absorption detection and monocular iris image acquisition can be carried out.
At this time, the light paths between the near-infrared lens 6, the non-red-explosion near-infrared light supplement lamp 7, the red-explosion near-infrared light supplement lamp 8, the white-light supplement lamp 9 and the eyes on one side of the first lens barrel are unobstructed. The light beams emitted by the red-explosion-free near-infrared light supplement lamp 7, the red-explosion-free near-infrared light supplement lamp 8 and the white light supplement lamp 9 on one side of the first lens barrel can reach the eyes of a user along the first lens barrel 3 on the left side, and the near-infrared lens 6 on one side of the first lens barrel can collect pupil images used for drug absorption detection and iris images used for iris recognition of the user.
The front end face of the second lens barrel 4 is light-tight, and the light paths between the near-infrared lens 6, the red-explosion-free near-infrared light supplement lamp 7, the red-explosion near-infrared light supplement lamp 8 and the white light supplement lamp 9 on one side of the second lens barrel and eyes are shielded by the front end face of the second lens barrel 4, so that the light paths are not smooth. The light beams emitted by the red explosion-free near-infrared light supplement lamp 7, the red explosion-free near-infrared light supplement lamp 8 and the white light supplement lamp 9 on one side of the second lens barrel cannot reach the eyes of the user along the second lens barrel 4 on the right side, and the near-infrared lens 6 on one side of the second lens barrel cannot collect pupil images for inhalation detection and iris images for iris recognition of the user.
The catch of the user is not easy to focus in dark environment, and the catch is easy to dissociate, which causes inaccurate collected pupil images. In order to solve the problem, the utility model sets one gaze guiding device 21 for each group of acquisition modules 100, guides the gaze of the user to focus through the gaze guiding device 21, enables the user to stare at the gaze guiding device 21, avoids the gaze from dissociating, and improves the accuracy of the acquisition of the drug absorption detection data.
The lens cone 2 of the iris identification and drug absorption detection equipment can be inserted into the lens silo 1 and also can be pulled out from the lens cone silo 1, and the equipment can be used in a plug-and-play mode. When the lens cone 2 is pulled out from the lens cone bin 1, the iris recognition and virus absorption detection equipment carries out binocular iris image acquisition, and when the lens cone 2 is inserted into the lens cone bin 1, monocular iris image acquisition and virus absorption detection can be carried out. The utility model realizes the virus-absorption detection and the iris image acquisition on the same equipment, has high equipment integration level, can realize the binocular iris image acquisition, the monocular iris image acquisition and the virus-absorption detection, and has good flexibility. And guide user's eye focus through eyesight guiding device 21, avoid the eye to wander, improve the accuracy that the virus absorption detected data was gathered.
In order to focus the eye of the user on the near-infrared lens 6, the present invention may set 21 the gaze guiding device near the near-infrared lens 6, for example, the gaze guiding device 21 may be set near the upper side, lower side, left side or right side of the near-infrared lens 6 or other nearby positions, which is not limited by the present invention.
The eye guiding device 21 may be a dim light lamp or a miniature animation display device, and when the eyes of the user are located in the lens cone in the completely dark environment, the dim light lamp or the animation display device guides the eye focus of the user by flashing rapidly, or the dim light lamp or the animation display device lights continuously to guide the eye focus of the user.
The pupil imaging of the virus absorption detection is carried out in a dark environment, and the effect of guiding the vision of the user can be achieved only by very small light brightness in the dark environment, so that the vision of the user can be guided only by very weak light of the low-light lamp or the miniature animation display device, and the very weak light of the low-light lamp or the miniature animation display device hardly influences the pupil imaging in the dark environment.
And when the dim light lamp or the animation display device guides the user to focus by flashing rapidly, the pupil images can be collected in the gap when the dim light lamp or the animation display device is extinguished, and the pupil images are in a completely dark environment when being collected, so that the pupil imaging cannot be influenced.
In the utility model, the positions of the first lens cone 3 and the second lens cone 4 inserted into the lens silo 1 can be reversed, and monocular iris image acquisition and virus absorption detection can be carried out on eyes at any side according to the positions of the first lens cone 3 and the second lens cone 4 inserted into the lens silo 1.
When the first lens cone 3 is positioned at the left side in the lens silo 1 and the second lens cone 4 is positioned at the right side in the lens silo 1, the virus absorption detection and the left monocular iris image acquisition can be carried out, and the acquisition process is as follows:
1. the iris identification and inhalation detection device automatically turns off the near-infrared lens 6 on the right side, the red-explosion-free near-infrared light supplement lamp 7, the red-explosion-free near-infrared light supplement lamp 8 and the white light supplement lamp 9, turns off the red-explosion-free near-infrared light supplement lamp 8 and the white light supplement lamp 9 on the left side, and keeps the stimulation light source 5 of the second lens barrel 4 off.
2. And (3) opening the red explosion-free near-infrared light supplement lamp 7 and the near-infrared lens 6 on the left side, starting to collect pupil images on the left side, turning on the stimulating light source 5 of the second lens barrel 4 after a plurality of seconds, turning off after a plurality of seconds, continuously collecting pupil images on the left side for a plurality of seconds, ending the virus inhalation detection operation flow, and judging whether the detected person has a virus inhalation history or not by analyzing the diameter change of the pupil in the collected pupil images.
3. And closing the red explosion-free near-infrared light supplement lamp 7 on the left side, opening the red explosion-free near-infrared light supplement lamp 8 and the white light supplement lamp 9 on the left side, and collecting a left monocular iris image for left eye monocular iris recognition.
When the lens cone 2 is inserted into the lens silo 1, the second lens cone 4 is positioned on the left side in the lens silo 1, and the first lens cone 3 is positioned on the right side in the lens silo 1, virus absorption detection and right monocular iris image acquisition can be carried out. The implementation principle and the process are similar to those when the first lens barrel 3 is located at the left side in the lens silo 1 and the second lens barrel 4 is located at the right side in the lens silo 1, and the detailed description is omitted here.
The positions of the first lens barrel 3 and the second lens barrel 4 inserted into the lens silo 1 of the iris identification and virus absorption detection device can be reversed, and monocular iris image acquisition and virus absorption detection can be carried out on eyes at any side according to the positions of the first lens barrel 3 and the second lens barrel 4 inserted into the lens silo 1. The utility model can realize binocular iris image acquisition, monocular iris image acquisition and virus absorption detection of any eye, and has good flexibility.
In an implementation manner of the first lens barrel 3 and the second lens barrel 4, the first lens barrel 3 and the second lens barrel 4 are an integrated structure 10, the integrated structure 10 includes a light-proof housing 11 with a closed front end face and an open rear end face, and a light shielding plate 12 for separating the light-proof housing 11 into the first lens barrel 3 and the second lens barrel 4 is disposed in the light-proof housing 11.
The first lens cone 3 and the second lens cone 4 are arranged into an integral structure, the lens barrel is formed in one step, the manufacturing is simple and convenient, the first lens cone 3 and the second lens cone 4 can be simultaneously inserted into the lens silo 1, and the operation is simple. When the positions of the first lens cone 3 and the second lens cone 4 inserted into the lens silo 1 need to be changed, the first lens cone 3 and the second lens cone 4 which are integrally structured are only needed to be taken out, the integrally structured is turned over by 180 degrees, and the integrally structured is inserted into the lens silo 1 again.
In the case that the first barrel 3 and the second barrel 4 are an integral structure 10, in order to realize the light transmission of the front end surface of the first barrel 3, a light transmission window 13 is opened on the front end surface of the first barrel 3.
In the present invention, the position of the stimulus light source 5 is not limited as long as it can provide the pupil stimulating light to the inside of the second barrel 4, and one example thereof is:
the front end face of the second lens barrel 4 is provided with a through hole, the stimulating light source 5 is arranged on the light source circuit board 14, the light source circuit board 14 is fixed on the outer side of the front end face of the second lens barrel 4, and the stimulating light source 5 penetrates through the through hole to provide pupil stimulating laser for the second lens barrel 4.
Fig. 5 shows a driving circuit of the stimulating light source 5 on the light source circuit board 14, the driving circuit has the same structure as the driving circuit of the two groups of white light supplement lamps 9 shown in fig. 4, and the stimulating light source 5 is driven and controlled through an output port of the SGM operational amplifier chip.
In order to facilitate arrangement of the components, two sets of collection modules 100 (i.e., the near-infrared lens 6, the red-explosion-free near-infrared light supplement lamp 7, the red-explosion-free near-infrared light supplement lamp 8 and the white light supplement lamp 9) are arranged on the main circuit board 15, and the two sets of collection modules 100 are distributed on the left side and the right side of the main circuit board 15.
Specifically, for a group of acquisition modules 100, a group of non-red-explosion near-infrared light supplement lamps 7 includes a plurality of non-red-explosion near-infrared light supplement lamps, and the plurality of non-red-explosion near-infrared light supplement lamps are divided into two parts and arranged on two sides of the near-infrared lens 6; the group of red-explosion near-infrared light supplementing lamps 8 also comprises a plurality of red-explosion near-infrared light supplementing lamps which are divided into two parts and arranged on two sides of the near-infrared lens 6; the white light supplement lamp 9 is arranged outside the near-infrared lens 6.
A near infrared filter 16 is arranged between the main circuit board 15 and the front end face of the mirror silo 1, and the near infrared filter 16 is used for eliminating interference.
Specifically, the wavelength of the non-red-explosion near-infrared light supplement lamp 7 is 940nm, the wavelength of the red-explosion near-infrared light supplement lamp 8 is 810nm, the wavelength range of the light transmitted by the near-infrared filter 16 is 770nm to 1100nm, light rays outside the wavelength range of 770nm to 1100nm are filtered, and interference of light rays with other wavelengths on iris image imaging and pupil image imaging is prevented. The stimulus light source 5 is a white light source.
As a modification of the embodiment of the present invention, a probe 17 is disposed on the front end surface of the second lens barrel 4, and a group of probe contacts 18 which are matched with the probe 17 are disposed on the main circuit board 15 at the front of the positions where the first lens barrel 3 and the second lens barrel 4 are inserted into the lens silo 1.
When the probe 17 is not inserted into the probe contact 18, the level at the probe contact 18 is a first level; when the probe 17 is inserted into the probe contact 18, the level at the probe contact 18 is a second level.
Illustratively, the first level is a high level and the second level is a low level.
After the probe 17 on the second lens cone 4 contacts with the probe contact 18 on the main circuit board 15, a second level can be fed back to the controller on the main circuit board 15, the controller can determine whether the second lens cone 4 is inserted on the left side or the right side by judging which side of the left side and the right side is the second level, and carry out inhalation detection and monocular iris image acquisition on human eyes which are not inserted into one side of the second lens cone 4 (namely, the side inserted into the first lens cone 3).
For example, when the second lens barrel 4 is inserted into the right side of the lens silo 1, the right side probe contact 18 on the main circuit board 15 is in contact with the probe 17, the R _ CHK signal on the main circuit board 15 is at the second level, and virus absorption detection and monocular iris image acquisition are performed on the left eye.
If the first lens cone 3 and the second lens cone 4 are not inserted into the lens silo 1, the probe contacts 18 on the left side and the right side of the main circuit board 15 are both at the first level, and binocular iris image acquisition is performed. By the above determination, the function switching between the first barrel 3 and the second barrel 4 can be realized or the first barrel 3 and the second barrel 4 are not inserted.
In one implementation manner, the probe 17 is disposed on the light source circuit board 14, and the probe 17 on the light source circuit board 14 is matched with the probe contact 18 on the main circuit board 15, so that not only can the detection of the insertion positions of the first lens barrel 3 and the second lens barrel 4 be realized, but also the main circuit board 15 can supply power to the light source circuit board 14 through the probe contact 18 and the probe 17, and provide power for the stimulation light source 5 on the light source circuit board 14.
The circuit of the probe contact 18 on the main circuit board 15 is shown in fig. 6, and the circuit of the probe 17 on the light source circuit board 14 is shown in fig. 7. Taking the left probe contact to probe contact as an example, the 4-point probe (J12) is in contact with the left probe contact (J10), the power supply VCC _3V3 powers the stimulus light source (LED4), and the contact of J12 with J10 causes the level at J10 to be pulled low.
In order to realize the guiding and limiting of the lens cone 2 in the lens cone bin 1, a guide rail sliding groove is arranged in the lens cone bin 1, and the lens cone 2 moves in the lens cone bin 1 through the guide rail sliding groove.
In the utility model, the front end surface and the rear end surface of the lens silo 1 are required to be transparent, in order to realize the transparency of the front end surface and the rear end surface of the lens silo, the lens cone silo 1 is made of a transparent material, the rear end surface of the lens silo 1 is of an open structure, and the front end surface of the lens silo 1 can be of an open structure or a sealed structure.
The outer surface of the lens cone bin 1 made of the light-transmitting material is also provided with a light-tight casing 19, and the light-tight casing 19 plays a role in protection. An eyeshade 20 made of soft material is detachably connected to the rear of the lens silo 1 to be attached to the eye area of the subject.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. An iris identification and drug-taking detection device, comprising a lens cartridge and a lens barrel, wherein:
the lens cone comprises a first lens cone and a second lens cone which are not light tight, the front end face and the rear end face of the first lens cone are light-transmitting, the front end face of the second lens cone is light-tight, the rear end face of the second lens cone is light-transmitting, and a stimulating light source for providing pupil stimulating laser for the interior of the second lens cone is arranged on the second lens cone;
the front end surface and the rear end surface of the lens silo are both light-transmitting, and the lens barrel is arranged in the lens silo in a pluggable manner;
the front of the lens silo is provided with two groups of acquisition modules, the positions of the two groups of acquisition modules correspond to the positions of the first lens cone and the second lens cone inserted into the lens silo, and each group of acquisition modules comprises a near-infrared lens, a group of red-explosion-free near-infrared light supplement lamps, a group of white light supplement lamps and a gaze guiding device.
2. An iris identification and poison absorption test device according to claim 1, wherein the eye guiding means includes a low light lamp or animation display means which flashes or lights up continuously.
3. The iris identification and virus aspiration detection apparatus of claim 2, wherein the positions of insertion of the first and second lens barrels into the lens silo can be reversed.
4. The iris identification and poison suction testing device according to claim 3, wherein the first lens barrel and the second lens barrel are an integral structure, the integral structure includes a light-tight housing with a closed front end face and an open rear end face, a light shielding plate for separating the light-tight housing to obtain the first lens barrel and the second lens barrel is arranged in the light-tight housing, and a light-transmitting window is arranged on the front end face of the first lens barrel.
5. The iris identification and drug absorption detection device of claim 4, wherein the front end face of the second lens barrel is provided with a through hole, the stimulus light source is arranged on a light source circuit board, the light source circuit board is fixed on the outer side of the front end face of the second lens barrel, and the stimulus light source passes through the through hole to provide pupil stimulation light into the second lens barrel.
6. The iris identification and poison suction testing device of claim 5, wherein said two sets of collecting modules are arranged on a main circuit board, and a near infrared filter is arranged between said main circuit board and the front end surface of said lens silo.
7. The iris identification and poison suction testing device according to claim 6, wherein a probe is provided on the front end surface of the second barrel, a set of probe contacts which are matched with the probe are provided on the main circuit board in front of the positions where the first and second barrels are inserted into the lens silo, respectively, and the probe is provided on the light source circuit board.
8. An iris identification and virus exposure apparatus according to claim 7, wherein when said probe is not inserted into said probe contact point, the level at said probe contact point is a first level; when the probe is inserted into the probe contact, the electrical level at the probe contact is a second electrical level.
9. The iris identification and inhalation detection device of any one of claims 1 to 8, wherein the wavelength of the light supplement lamp without red explosion is 940nm, the wavelength of the light supplement lamp with red explosion is 810nm, the wavelength range of the light transmitted by the near infrared filter is 770nm to 1100nm, and the stimulation light source is a white light source.
10. The iris identification and virus exposure detection apparatus of claim 9, wherein the lens barrel moves within the barrel magazine through a guide rail slide groove;
the lens silo is made of light-transmitting materials, a light-tight shell is arranged on the outer surface of the lens barrel silo, and an eye patch made of soft materials is detachably connected to the rear of the lens silo.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121499009.3U CN215341116U (en) | 2021-07-03 | 2021-07-03 | Iris identification and drug absorption detection equipment |
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115273311A (en) * | 2022-07-28 | 2022-11-01 | 杭州海康威视数字技术股份有限公司 | Gate machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115273311A (en) * | 2022-07-28 | 2022-11-01 | 杭州海康威视数字技术股份有限公司 | Gate machine |
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