A projection device for tongue surface detection and a projection system thereof

Abstract

The application relates to the technical field of image acquisition and processing devices, and discloses a projection device for tongue surface detection, a connecting rod is fixedly connected to a rotating frame, a shielding curtain is detachably connected to the connecting rod, the bottom of the shielding curtain abuts against the bottom of a dark box, the surface of the shielding curtain is provided with a carbon fiber layer, the top of the dark box is provided with an air hole, the air hole is located on the front side of the shielding curtain, and the dark box is connected with an air outlet cavity. The photos taken by the device have high consistency for people with different postures and body shapes, and the machine analysis is facilitated. In addition, under the isolation and guiding action of the shielding curtain, the flow direction of the gas is consistent, the old gas carrying bacteria is further isolated by the airflow itself, the shielding curtain has the functions of adsorption and isolation, the airflow is guided and bound, the spread of droplets in the dark box is avoided, and the adhesion of the droplets to the camera and the coaxial light source is reduced.

Description

Technical Field

[0001] This invention relates to the field of image acquisition and processing equipment technology, specifically to a projection device and projection system for tongue surface detection. Background Technology

[0002] Tongue diagnosis is a simple and effective method for assisting in diagnosis and differentiation by observing changes in the color and shape of the tongue, and it is one of the key aspects of visual diagnosis. Benefiting from the development of internet technology, remote diagnosis of the tongue surface has become possible. Patients can collect tongue surface information at home, in a lower-level hospital, or at other collection points, and project it remotely onto a display device via the internet for more accurate diagnosis by experienced doctors.

[0003] For remote diagnosis, the accuracy of image acquisition directly affects the accuracy of diagnosis. When acquiring images of the tongue surface, it is greatly affected by ambient light. At the same time, the liquid on the tongue surface will also produce reflections, resulting in overexposed areas. Therefore, by using a dark box supplemented with a suitable light source to acquire tongue surface information, the influence of ambient light can be overcome, the influence of liquid reflection can be reduced, and the accuracy of tongue surface information acquisition can be improved.

[0004] The positions of the camera and light source inside the darkroom are relatively fixed, but because everyone's body size and posture when using it are different, it is difficult to ensure that the shooting angle and lighting angle are kept at the optimal angle, which affects the image acquisition quality and the diagnosis.

[0005] The darkroom is usually sealed. When collecting information from a user's tongue, the user's face is pressed against the opening of the darkroom, creating a relatively enclosed space inside. Since the space inside the darkroom is relatively small, the user's exhaled air can fill the interior, and this exhaled air may carry germs that could infect subsequent users.

[0006] Secondly, users may cough involuntarily during the examination, expelling a large amount of droplets. Since the space inside the darkroom is small, the droplets may stick to the lens or the inner wall. Droplets sticking to the lens will affect the image quality, while droplets sticking to the inner wall of the darkroom may carry germs that could infect the next user. Summary of the Invention

[0007] To address the shortcomings of the aforementioned background technology, this invention provides a technical solution for a projection device and projection system for tongue surface detection. A coaxial light source and camera simultaneously rotate around the tongue and take pictures. The photos taken show high consistency for people with different postures and body types, facilitating machine analysis. Furthermore, the isolation and guiding effect of the shielding curtain ensures consistent gas flow. Simultaneously, the airflow itself further isolates germ-carrying air pockets. The shielding curtain also has adsorption and isolation functions. Combined with the binding effect of the guided airflow, this prevents droplets from spreading in the dark chamber and reduces droplet adhesion to the camera and coaxial light source, thus solving the problems raised in the background technology.

[0008] This invention provides the following technical solution: a projection device for tongue surface detection, comprising an image acquisition component, a server, and an image display component:

[0009] The image acquisition component includes a dark box with an opening at the front end, a mask at the front end of the dark box, a rotating frame hinged to the side wall of the dark box, the hinge point of the rotating frame being located within the projection range of the user's jaw and tongue on the side wall, a coaxial light source and a camera fixedly connected to the rotating frame, the camera being connected to a controller, the controller transmitting information to a server, and a servo motor connected to the rotating frame for driving the rotating frame to rotate.

[0010] The rotating frame is fixedly connected to a connecting rod, and the connecting rod is detachably connected to a shielding curtain. The bottom of the shielding curtain abuts against the bottom of the dark box. The surface of the shielding curtain is provided with a carbon fiber layer. The top of the dark box is provided with an air hole, which is located on the front side of the shielding curtain. The dark box is connected to an air outlet chamber, which is provided with a fan. The air outlet chamber is located on the rear side of the shielding curtain.

[0011] Preferably, the shielding curtain includes a guide curtain connected to the rear wall of the darkroom and an isolation curtain connected to the bottom of the darkroom. The guide curtain, the isolation curtain and the darkroom form a dead zone cavity, a negative pressure cavity and a breathing cavity. The negative pressure cavity is connected to the air outlet cavity. The negative pressure of the negative pressure cavity acts on the dead zone cavity and the breathing cavity through the shielding curtain.

[0012] Preferably, the bottom of the dark box is detachably connected to a base plate, the base plate is provided with a groove connecting the breathing chamber and the negative pressure chamber, and the bottom of the isolation curtain is shielded on the base plate.

[0013] Preferably, the upper part of the breathing chamber is provided with an inclined air guide plate, one end of which is connected to the upper wall of the front opening of the dark box.

[0014] Preferably, the darkroom is equipped with a secondary display screen at a position corresponding to the eye, the secondary display screen is connected to the camera, and displays the image captured by the camera.

[0015] Preferably, a chin support is provided at the center of the front opening of the dark box. The chin support includes a slider that is slidably connected to the dark box, and the slider is rotatably connected to a U-shaped support through a sliding block.

[0016] Preferably, the connecting rod is hinged to an adjusting frame, and a drive motor is provided between the adjusting frame and the connecting rod to drive the adjusting frame to rotate. The top of the adjusting frame supports the curtain.

[0017] Preferably, the U-shaped support is equipped with a pressure sensor, which is used to sense the pressure on the slider. When the pressure detected by the pressure sensor is greater than a set value, the adjustment frame is triggered to rotate to the highest position.

[0018] A projection system for a projection device for tongue detection, comprising controlling the aforementioned projection device for tongue detection, including the following steps:

[0019] S1. After the equipment is turned on, the fan in the air outlet chamber starts, forming a one-way airflow to clear the bacteria floating in the dark box.

[0020] S2. The user's face is pressed tightly against the mask, the coaxial light source and camera are turned on, the controller detects the posture of the tongue, and when the posture meets the requirements, proceed to step S3.

[0021] S3. The rotating frame starts to rotate. Every time the rotating frame rotates by a set angle, the camera takes a picture, and the controller uploads the picture to the server.

[0022] S4. The server processes the photos, deletes unqualified photos, and saves qualified photos in the server. If there are no qualified photos or the number of qualified photos is less than the set value, feedback is sent to the controller, and the controller reminds the user that the photos are unqualified and need to be retaken.

[0023] S5. The image display component retrieves the corresponding photo information from the server using the extraction code and displays it.

[0024] The present invention has the following beneficial effects:

[0025] 1. The projection device and its projection system for tongue surface detection, under the action of the rotating frame, the coaxial light source and camera rotate around the tongue and take pictures at the same time. The pictures taken have high consistency for people with different postures and body types, which is convenient for machine analysis, and at the same time can ensure the capture of high-quality pictures.

[0026] 2. The projection device and its projection system for tongue surface detection ensure consistent gas flow direction under the isolation and guidance of the shielding curtain, while using the airflow itself for further isolation to prevent old gas carrying pathogens from approaching the opening and causing infection.

[0027] 3. The projection device and projection system used for tongue surface detection have a shielding curtain that has the functions of adsorption and isolation. Combined with the binding effect of the guided airflow, it prevents droplets from spreading in the dark box, reduces droplet adhesion to the camera and coaxial light source, and ensures the quality of the finished product. Attached Figure Description

[0028] Figure 1 This is a side sectional view of the image acquisition component in this invention;

[0029] Figure 2 This is a schematic diagram of the overall structure of the image acquisition component in this invention;

[0030] Figure 3 This is a structural block diagram of the present invention;

[0031] Figure 4 This is a partial cross-sectional view of the image acquisition component in this invention;

[0032] Figure 5 For the present invention Figure 2 A magnified view of 'a' in the middle.

[0033] In the diagram: 1. Dark box; 2. Mask; 3. Chin rest; 31. U-shaped support; 32. Sliding block; 33. Sliding block; 34. Pressure sensor; 4. Air vent; 5. Coaxial light source; 6. Camera; 7. Rotating frame; 8. Connecting rod; 9. Adjusting frame; 10. Dead zone chamber; 11. Shielding curtain; 11A. Guide curtain; 11B. Isolation curtain; 12. Negative pressure chamber; 13. Breathing chamber; 14. Exhaust chamber; 15. Base plate; 16. Air guide plate; 17. Secondary display screen; 18. Observation window. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-3 A projection device for tongue surface detection includes an image acquisition component, a server, and an image display component;

[0036] The image acquisition unit is used to acquire images of the tongue surface and transmit the image information to the server via the Internet. The server receives the image information and judges the image quality based on the image information. If it is qualified, the image information is stored in the server. If it is unqualified, the unqualified information is fed back to the image acquisition unit, and the image acquisition unit re-acquires the image of the tongue surface. The image display unit is used to send an extraction code to the server, obtain the image information corresponding to the extraction code from the server, and display it.

[0037] The image acquisition component includes a dark box 1 with a front opening. A mask 2 is located at the front of the dark box 1, fitting snugly against the user's face to reduce ambient light interference inside the dark box 1. A rotating frame 7 is hinged to the side wall of the dark box 1, with its two sides respectively hinged to the sides of the dark box 1. The hinge points of the rotating frame 7 are located within the projection range of the user's jaw and tongue on the side wall. A coaxial light source 5 and a camera 6 are fixedly connected to the rotating frame 7. The camera 6 is connected to a controller, which transmits information to a server. The coaxial light source 5 is located in the center, and its illumination direction is horizontal with the rotating frame 7. A servo motor is connected to the rotating frame 7 to drive its rotation. The servo motor drives the rotating frame 7 to rotate. The illumination angles of the coaxial light source 5 and camera 6 are adjusted. A connecting rod 8 is fixedly connected to the rotating frame 7. A shielding curtain 11 is detachably connected to the connecting rod 8. The bottom of the shielding curtain 11 abuts against the bottom of the dark box 1. The surface of the shielding curtain 11 is provided with a carbon fiber layer for adsorbing droplets. The top of the dark box 1 is provided with an air hole 4, which is located in front of the shielding curtain 11. The dark box 1 is connected to an air outlet chamber 14, which is provided with a fan. The air outlet chamber 14 is located behind the shielding curtain 11. The gas in the dark box 1 flows unidirectionally under the action of the fan. At the same time, because the shielding curtain 11 divides the inner cavity of the dark box 1, it extends the gas flow path, making the gas flow unidirectionally and avoiding the mixing of new and old air, thereby avoiding the inhalation of germs in the old air.

[0038] The shielding curtain 11 includes a guide curtain 11A connected to the rear wall of the darkroom 1 and an isolation curtain 11B connected to the bottom of the darkroom 1. The guide curtain 11A, isolation curtain 11B, and darkroom 1 form a dead zone 10, a negative pressure chamber 12, and a breathing chamber 13. The breathing chamber 13 is located on one side of the opening. The dead zone 10 is located above the guide curtain 11A, and the breathing chamber 13 is located on one side of the isolation curtain 11B. The negative pressure chamber 12 communicates with the air outlet chamber 14, and a negative pressure is formed within the negative pressure chamber 12. The negative pressure of the negative pressure chamber 12 acts through the shielding curtain 11 on the dead zone 10 and the breathing chamber 13, i.e., the guide curtain 11A. The isolation curtain 11B allows gas to pass through, but it creates significant resistance to the gas passage. The pressure inside the dead zone 10 is higher than that in the negative pressure chamber 12 and lower than that in the atmosphere. Since the gas in the dark box 1 flows freely when the machine is stopped, and germs adhere to the side wall of the dark box 1, the dead zone 10 forms a dead zone for airflow, binding the germs that fall off the side wall. The newly flowing gas directly enters the breathing chamber 13 and then enters the negative pressure chamber 12, preventing the gas that comes into contact with the shielding curtain 11 from carrying germs and flowing back. The three ends of the shielding curtain 11 are magnetically attached to the inner wall of the dark box 1 or the connecting rod 8.

[0039] Please see Figure 4 The bottom of the dark box 1 is detachably connected to a base plate 15. The base plate 15 has a groove that connects the breathing chamber 13 and the negative pressure chamber 12. The bottom of the isolation curtain 11B is shielded on the base plate 15. The base plate 15 is made of absorbent plant fiber. The exhaled gas flows directly to the isolation curtain 11B and flows down the isolation curtain 11B to the bottom. In addition, since the groove directly connects the negative pressure chamber 12 and the breathing chamber 13, a large amount of airflow flows from the groove to the negative pressure chamber 12. The airflow is relatively rapid, which pulls the airflow flowing down the isolation curtain 11B and avoids the airflow being blocked by the isolation curtain 11B and flowing back.

[0040] The upper part of the breathing chamber 13 is provided with an inclined air guide plate 16. One end of the air guide plate 16 is connected to the upper wall of the front opening of the dark box 1 to avoid the formation of a dead corner near the mouth at the front end, which would cause germs to adhere. At the same time, the position where fresh gas enters corresponds to the position where the user breathes, so as to avoid the fresh gas carrying germs.

[0041] A secondary display screen 17 is provided on the dark box 1 at the position corresponding to the eye. The secondary display screen 17 is connected to the camera 6 and displays the image captured by the camera 6. The secondary display screen 17 is located on the inner wall of the dark box 1, in the space enclosed by the air guide plate 16 and the dark box 1. A transparent observation window 18 is provided at the front of the dark box 1 at the height of the eye. The user observes the image on the secondary display screen 17 through the observation window 18. The secondary display screen 17 has a tongue-shaped reference pattern. The user adjusts his posture through the secondary display screen 17 to ensure that the posture meets the shooting requirements.

[0042] A chin rest 3 is located in the center of the front opening of the camera obscura 1. (See also...) Figure 5The chin support 3 includes a slider 33 that is slidably connected to the dark box 1. The slider 33 can slide back and forth. The slider 33 is rotatably connected to a U-shaped support 31 through a sliding block 32. The user places his chin on the U-shaped support 31 and can rotate it back and forth to adjust his posture and fix it. The edge of the mask 2 is provided with an airbag. After the posture is adjusted, the airbag automatically inflates and expands to fit snugly against the face and prevent external light from entering.

[0043] Please refer to Figure 1. The connecting rod 8 is hinged to the adjustment frame 9. A drive motor is provided between the adjustment frame 9 and the connecting rod 8 to drive the adjustment frame 9 to rotate. The top of the adjustment frame 9 supports the shielding curtain 11. The shielding curtain 11 is in the shape of a "V". The forked ends are the guide curtain 11A and the isolation curtain 11B. The top is airtight. On the one hand, a relatively narrow airflow channel is formed between the top and the dark box 1, which further reduces the probability of gas escaping from the dead zone cavity 10. On the other hand, the height of the highest point of the shielding curtain 11 can be adjusted to form a shield and prevent droplets from flying towards the coaxial light source 5 and the camera 6.

[0044] Please see Figure 1 and Figure 5 The U-shaped support 31 is equipped with a pressure sensor 34, which is used to sense the pressure on the slider 33. When the pressure detected by the pressure sensor 34 is greater than the set value, it triggers the adjustment frame 9 to rotate to the highest position. When the user coughs, the pressure on the chin support 3 will change significantly. When the pressure change is detected to be too large, the adjustment frame 9 will rotate to the highest position to form a shield and prevent droplets from flying towards the coaxial light source 5 and the camera 6.

[0045] A projection system for a projection device for tongue detection, comprising controlling the aforementioned projection device for tongue detection, including the following steps:

[0046] S1. After the equipment is turned on, the fan in the air outlet chamber 14 starts, forming a one-way airflow to clear the bacteria floating in the dark box 1.

[0047] S2. The user's face is pressed against the mask 2, the coaxial light source 5 and camera 6 are turned on, the controller detects the posture of the tongue, and when the posture meets the requirements, proceed to step S3; the user can adjust their posture by the position of the display and reference pattern on the secondary display screen 17.

[0048] S3. The rotating frame 7 starts to rotate. Every time the rotating frame 7 rotates by a set angle, the camera 6 takes a picture, and the controller uploads the picture to the server.

[0049] S4. The server processes the photos, deletes unqualified photos, and saves qualified photos in the server. If there are no qualified photos or the number of qualified photos is less than the set value, feedback is sent to the controller, and the controller reminds the user that the photos are unqualified and need to be retaken.

[0050] S5. The image display component retrieves the corresponding photo information from the server using the extraction code and displays it.

[0051] The working principle and workflow of this invention:

[0052] The hinge point of the rotating frame 7 is close to the position of the tongue. When the rotating frame 7 rotates, the illumination distance between the coaxial light source 5 and the camera 6 remains almost unchanged, while the angle with the tongue changes continuously. When a photo is taken at every set angle, there are always a few high-quality photos.

[0053] Due to the dividing and adsorption effect of the blocking curtain 11, on the one hand, a relative dead angle is formed, locking the gas in the dead angle cavity 10 and preventing the germs adhering to the inner wall of the dark box 1 from falling off and mixing with the fresh air. On the other hand, the isolation curtain 11B forms a guide to the bottom plate 15 for the exhaled gas. Even if some germs fall off from the isolation curtain 11B, they will be isolated by the gas flowing from the air guide plate 16 to the bottom plate 15, preventing the germs from flowing back.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A projection device for tongue surface detection, comprising an image acquisition component, a server, and an image display component, characterized in that: The image acquisition component includes a dark box (1) with an open front end. A mask (2) is provided at the front end of the dark box (1). A rotating frame (7) is hinged to the side wall of the dark box (1). The hinge point of the rotating frame (7) is within the projection range of the user's lower jaw and tongue on the side wall. A coaxial light source (5) and a camera (6) are fixedly connected to the rotating frame (7). The camera (6) is connected to a controller, and the controller transmits information to the server. The rotating frame (7) is connected to a servo motor for driving the rotation of the rotating frame (7); The rotating frame (7) is fixedly connected with a connecting rod (8). The connecting rod (8) is detachably connected with a shielding curtain (11). The bottom of the shielding curtain (11) abuts against the bottom of the dark box (1). The surface of the shielding curtain (11) is provided with a carbon fiber layer. An air hole (4) is provided at the top of the dark box (1). The air hole (4) is located in front of the shielding curtain (11). The dark box (1) is connected to an air outlet cavity (14). A fan is provided in the air outlet cavity (14). The air outlet cavity (14) is located behind the shielding curtain (11); The shielding curtain (11) is in a "human" shape. At the fork, a guiding curtain (11A) connected to the rear wall of the dark box (1) and an isolation curtain (11B) connected to the bottom of the dark box (1) are respectively formed. A dead angle cavity (10), a negative pressure cavity (12), and a breathing cavity (13) are formed between the guiding curtain (11A), the isolation curtain (11B), and the dark box (1). The negative pressure cavity (12) is communicated with the air outlet cavity (14). The guiding curtain (11A) and the isolation curtain (11B) allow gas to pass through. The negative pressure in the negative pressure cavity (12) acts on the dead angle cavity (10) and the breathing cavity (13) through the shielding curtain (11); The connecting rod (8) is located at the top of the rotating frame (7) and is hinged with an adjusting frame (9). The top of the adjusting frame (9) supports the shielding curtain (11). The top of the shielding curtain (11) is airtight, and a one-way air flow channel is formed between the top of the shielding curtain (11) and the dark box (1).

2. The projection device for tongue surface detection according to claim 1, characterized in that: The bottom of the dark box (1) is detachably connected with a bottom plate (15). The bottom plate (15) is provided with a groove communicating the breathing cavity (13) and the negative pressure cavity (12). The bottom of the isolation curtain (11B) shields on the bottom plate (15).

3. A projection device for tongue surface detection according to claim 2, characterized in that: An inclined air guiding plate (16) is provided at the upper part of the breathing cavity (13). One end of the air guiding plate (16) is connected to the upper wall of the front end opening of the dark box (1).

4. A projection device for tongue surface detection according to claim 1, characterized in that: A secondary display screen (17) is provided at the position corresponding to the eyes on the dark box (1). The secondary display screen (17) is connected to the camera (6) and displays the picture taken by the camera (6).

5. A projection device for tongue surface detection according to claim 1, characterized in that: A chin support (3) is provided at the central position of the front end opening of the dark box (1). The chin support (3) includes a slider (33) slidably connected to the dark box (1). The slider (33) is rotatably connected with a U-shaped support (31) through a sliding block (32).

6. A projection device for tongue surface detection according to claim 5, characterized in that: A drive motor is provided between the adjustment frame (9) and the connecting rod (8) to drive the adjustment frame (9) to rotate.

7. A projection device for tongue surface detection according to claim 6, characterized in that: The U-shaped support (31) is equipped with a pressure sensor (34), which is used to sense the pressure on the slider (33). When the pressure detected by the pressure sensor (34) is greater than the set value, the adjustment frame (9) is triggered to rotate to the highest position.

8. A projection system for a projection device for tongue surface detection, comprising controlling the projection device for tongue surface detection as described in any one of claims 1-7, including the steps of: S1. After the equipment is turned on, the fan in the air outlet chamber (14) starts to form a one-way airflow to clean up the bacteria floating in the dark box (1). S2. The user's face is pressed against the mask (2), the coaxial light source (5) and camera (6) are turned on, the controller detects the posture of the tongue, and when the posture meets the requirements, step S3 is performed. S3. The rotating frame (7) starts to rotate. Every time the rotating frame (7) rotates by a set angle, the camera (6) takes a picture and the controller uploads the picture to the server. S4. The server processes the photos, deletes unqualified photos, and saves qualified photos in the server. If there are no qualified photos or the number of qualified photos is less than the set value, feedback is sent to the controller, and the controller reminds the user that the photos are unqualified and need to be retaken. S5. The image display component retrieves the corresponding photo information from the server using the extraction code and displays it.

Images