Reminding device for face state recognition and use method thereof

Abstract

The invention discloses a reminding device for facial state recognition and a using method thereof, and belongs to the technical field of image acquisition assistance. The device comprises an arc-shaped support, movable frames used for adjusting the distance are arranged on the inner sides of the two ends of the arc-shaped support, and clamping frames used for fixing a bed frame are arranged on the outer sides of the movable frames. The moving frame is rotationally connected with the arc-shaped support, a picture collector and a state analysis assembly are arranged on the outer side of the moving frame, an electric connecting device is arranged at the top of the moving frame, and the picture collector is connected with a lens; an adjusting gear matched with a gear groove in the arc-shaped support is arranged in the picture collector, and the adjusting gear is driven by an adjusting motor to drive the moving frame to rotate along the arc-shaped support. The rotary screw rod can be driven to rotate by rotating the rotary knob, finally, the clamping plate can be controlled to move to clamp and fix the bed frame, and flexible adjustment and fixation are facilitated to adapt to different requirements.

Description

Technical Field

[0001] The present invention relates to a reminder device for facial state recognition and its usage method, belonging to the technical field of picture acquisition auxiliary devices. Background Art

[0002] When a patient is resting in a hospital bed, medical staff cannot take care of the patient all the time. During the patient's sleep, sudden situations often occur, but the patient cannot notify the medical staff independently. To avoid this situation, a picture acquisition device can be used to collect the facial information of the patient, preprocess the collected information by using point cloud data acquisition and modeling, then perform emotion recognition and analysis on the patient through feature extraction and description, and can extract HRV information from the video image through the photoplethysmography (PPG) technology. Combine the obtained HRV features and the features of facial expressions and emotions to generate a new feature vector, and select a suitable classification model for binary classification such as SVM. Different emotional states can be well distinguished through HRV and the facial expressions and emotions of the person, and the patient's state can be judged and the staff can be provided for nursing in time. However, the existing emotion recognition reminder device cannot be flexibly adjusted and fixed according to the specifications of different patient bed frames. At the same time, when the patient switches between the lying flat and side-lying states, the camera cannot follow, resulting in abnormal picture acquisition and emotion recognition. Finally, when the position of the adjustable camera is set, the connecting wires are prone to looseness, resulting in entanglement or damage. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiency that the reminder device in the prior art cannot be flexibly adjusted and fixed according to the specifications of different patient bed frames, and provide a reminder device for facial state recognition and its usage method; To achieve the above object / To solve the above technical problems, the present invention is implemented by the following technical solutions: First aspect: A reminder device for facial state recognition, comprising: An arc-shaped bracket, the inner sides of both ends of the arc-shaped bracket are provided with movable frames for adjusting the spacing, and the outer sides of the movable frames are provided with clamping frames for fixing the bed frame; A movable frame, the movable frame is rotatably connected to the arc-shaped bracket, a picture collector and a state analysis component are arranged on the outer side of the movable frame, an electrical connection device is arranged on the top of the movable frame, and the picture collector is connected with a lens; The picture collector includes an adjustment gear that cooperates with the internal gear groove of the arc-shaped bracket, and the adjustment gear is driven by an adjustment motor to drive the movable frame to rotate along the arc-shaped bracket.

[0004] Optionally, a limiting arc plate is installed at the top of the arc-shaped bracket, a guiding groove is formed on the side surface of the arc-shaped bracket, a limiting arc groove is formed at the bottom of the arc-shaped bracket, and the limiting arc groove and the limiting arc plate are slidably combined with the moving frame.

[0005] Optionally, the moving frame includes a limiting frame, a groove for engaging with the limiting arc plate is provided at the top end inside the limiting frame, an arc-shaped plate for cooperating with the guiding groove is provided on the limiting frame, and a supporting wheel for cooperating with the electrical connection device is provided at the top of the limiting frame.

[0006] Optionally, the electrical connection device includes a connecting wire, the connecting wire passes through the limiting frame and is electrically connected to the image collector and the state analysis component; a rotating winch is provided at the end of the connecting wire, a power-on slip ring is provided inside the rotating winch, a toothed ring is installed on the rotating winch, and a driving gear is engaged with the top of the toothed ring, and a driving motor is provided at the input end of the driving gear.

[0007] Optionally, an outer shell is provided outside the image collector, a connector is installed inside the outer shell, and the connector is respectively connected to the connecting wire, the adjusting motor and the emotion analysis component.

[0008] Optionally, an adjusting screw rod for connecting with the arc-shaped bracket is provided on the movable frame, one end of the adjusting screw rod is connected to the arc-shaped bracket through a combined bearing, and the other end is connected to the movable frame through a fixed nut sleeve.

[0009] Optionally, an adjusting knob is provided at one end of the adjusting screw rod away from the movable frame, four groups of limiting guide rods are installed on one side of the movable frame where the fixed nut sleeve is provided, and a slot for inserting the clamping frame is provided on the movable frame.

[0010] Optionally, a connecting plate is installed on the clamping frame, three inserting rods are installed on the top of the connecting plate, and the inserting rods are located inside the slot.

[0011] Optionally, a clamping plate is provided in the clamping slot of the clamping frame, one side of the clamping plate is connected by a bearing to a rotating screw rod, and the rotating screw rod is located inside the front or back of the clamping frame, and a rotating knob is installed at the end of the rotating screw rod.

[0012] Second aspect: A using method of a reminder device for facial state recognition, including the steps: S1. First, measure the length of the bed frame, and by adjusting the movable frame and the clamping frame, splice the movable frame and the clamping frame on the bracket of the bed frame at the same time; S2. Adjust the clamping frame to clamp it on the bed frame, and then connect the wire in the electrical connection device to the alarm panel above the hospital bed; S3. The camera of the re-image collector scans the face of the patient on the hospital bed and determines the position. The scan can be analyzed by the internal emotion analysis component, and the analyzed data is transmitted to the nurse station through the alarm panel via a line. At the same time, the image collector continuously analyzes the position of the patient's face. The signal is used to control the adjustment gear to rotate through the adjustment motor. The rotation will drive the limit frame to slide along the arc-shaped bracket along the gear groove, and the sliding will ensure that the camera always aims at the patient's face to maintain image acquisition. The collected information is preprocessed using point cloud data acquisition and modeling, and then emotion recognition and analysis are performed on the patient through feature extraction and description. At the same time, HRV information is extracted from the video image through the photoplethysmography (PPG) method. The obtained HRV features and the features of the facial expression emotions are combined to generate a new feature vector. The analyzed information is provided to medical staff for nursing or emergency rescue; S4. Finally, during the movement of the movable frame, the connecting line will send a signal to the driving motor, and the driving motor will control the driving gear to rotate. The rotation will drive the rotating winch to rotate synchronously along the energized slip ring in the middle, and the connecting line wound around it will be released during the rotation.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention is provided with a movable frame and a clamping frame. By using the adjusting screw rod, the fixed nut sleeve and the movable frame can be driven to adjust the position. Through the adjustment, it can adapt to bed frames of different specifications. After splicing the insertion rod and the slot, the clamping frame and the movable frame can be combined. After combination, the opening at the bottom is spliced with the bed frame. Finally, by rotating the knob, the rotating screw rod can be driven to rotate, and finally the clamping plate can be controlled to move to clamp and fix the bed frame, which is convenient for flexible adjustment and fixation to meet different needs; By providing an emotion analysis component and an adjustment gear, the image collector on the right side of the emotion analysis component continuously analyzes and determines the position of the patient's face. Then the emotion analysis component controls the adjustment motor to drive the adjustment gear to rotate. When the adjustment gear rotates, it will drive the limit frame to slide along the arc-shaped bracket, thereby changing the position of the camera to follow the patient's face and perform continuous emotion analysis; By providing a winch device and a driving gear, the winch device can provide an installation position for the internal structure, and the energized slip ring can keep the wire and the connecting line in a connected state. When the limit frame adjusts its position, the driving motor drives the driving gear to rotate, and the driving gear drives the toothed ring and the connected rotating winch to rotate, thereby achieving the effect of releasing or winding the connecting line and avoiding the problem that the connecting line is easily entangled. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present invention; Figure 2 Schematic diagram of the arc-shaped bracket structure of the present invention; Figure 3 Schematic diagram of the movable frame structure of the present invention; Figure 4 Schematic diagram of the clamping frame structure of the present invention; Figure 5 Schematic diagram of the limit frame structure of the present invention; Figure 6 Schematic cross-sectional view of the emotion analysis component of the present invention; Figure 7 Schematic cross-sectional view of the rotating winch of the present invention; In the figure: 1. Arc-shaped bracket; 101. Limit arc plate; 102. Guide groove; 103. Gear groove; 104. Limit arc groove; 2. Movable frame; 201. Combined bearing; 202. Adjusting knob; 203. Adjusting screw; 204. Fixed sleeve; 205. Limit guide rod; 206. Slot; 3. Clamping frame; 301. Connecting plate; 302. Insert rod; 303. Clamping plate; 304. Rotating screw; 305. Rotating knob; 4. Moving frame; 401. Limit frame; 402. Limit plate; 403. Fixed bearing; 404. Arc plate; 405. Support wheel; 5. Image collector; 501. Shell; 502. Connector; 503. Adjusting motor; 504. Adjusting gear; 505. Emotion analysis component; 506. Lens; 6. Electrical connection device; 601. Connecting wire; 602. Rotating winch; 603. Power-on slip ring; 604. Electric wire; 605. Tooth ring; 606. Bearing ring; 607. Winch device; 7. Driving motor; 701. Driving gear. Detailed implementation manners

[0015] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0016] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0017] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances. Embodiment

[0018] Reference Figures 1-7, the present invention provides a reminder device for facial state recognition, including an arc-shaped bracket 1. Inside both ends of the arc-shaped bracket 1, there are fixed screw sleeves 204, and inside the fixed screw sleeves 204, there are adjusting screw rods 203. One end of the fixed screw sleeve 204 is equipped with a movable frame 2, and on the right side of the movable frame 2, there is a combined clamping frame 3. Inside the clamping frame 3, there is a clamping plate 303. Inside the arc-shaped bracket 1, there is a gear groove 103, and on the outside of the arc-shaped bracket 1, there is a movable frame 4. The movable frame 4 is rotatably connected to the arc-shaped bracket 1. The movable frame 4 is provided with a limit frame 401. On the right side of the limit frame 401, there is a housing 501. Inside the left side of the housing 501, there is an adjusting motor 503. The output end of the adjusting motor 503 is provided with an adjusting gear 504, and the adjusting gear 504 is located inside the gear groove 103. Inside the housing 501, there is an emotion analysis component 505, and on the right side of the emotion analysis component 505, there is a picture collector 5. Inside the upper end of the limit frame 401, there is a connecting wire 601, and inside the end of the connecting wire 601, there is a rotating winch 602. Inside the rotating winch 602, there is a power-on slip ring 603. On the left side of the rotating winch 602, there is a gear ring 605, and on the top of the gear ring 605, there is an engaged driving gear 701. The input end of the driving gear 701 is provided with a driving motor 7.

[0019] Through the above technical solution, by using the adjusting screw rod 203, the fixed screw sleeve 204 and the movable frame 2 can be driven to adjust their positions. Through adjustment, it can adapt to bed frames of different specifications. After splicing the insertion rod 302 and the slot 206, the clamping frame 3 and the movable frame 2 can be combined. After combination, the opening at the bottom is spliced with the bed frame. Finally, by turning the knob 305, the rotating screw rod 304 can be driven to rotate, and finally, the movement of the clamping plate 303 can be controlled to clamp and fix the bed frame, which is convenient for flexible adjustment and fixation to meet different requirements. By setting the emotion analysis component 505 and the adjusting gear 504, the picture collector 5 on the right side of the emotion analysis component 505 will continuously analyze the patient's face and judge the position. Then, the emotion analysis component 505 will control the adjusting motor 503 to drive the adjusting gear 504 to rotate. When the adjusting gear 504 rotates, it will drive the limit frame 401 to slide and adjust along the arc-shaped bracket 1, thereby changing the position of the lens 506 to follow the patient's face and conduct continuous emotion analysis. By setting the winch 607 and the driving gear 701, the winch 607 can provide an installation position for the internal structure, and the power-on slip ring 603 can keep the wire 604 and the connecting wire 601 in a connected state. When the limit frame 401 adjusts its position, the driving motor 7 will drive the driving gear 701 to rotate, and the driving gear 701 will drive the gear ring 605 and the connected rotating winch 602 to rotate, thereby achieving the effect of releasing or winding the connecting wire 601 and avoiding the problem that the connecting wire 601 is prone to entanglement.

[0020] Specifically, a limiting arc plate 101 is installed at the top of the arc-shaped bracket 1, a guiding groove 102 is formed on the right side of the arc-shaped bracket 1, and a limiting arc groove 104 is formed at the bottom of the arc-shaped bracket 1. The limiting arc groove 104 and the limiting arc plate 101 are slidably combined with the limiting frame 401.

[0021] Through the above technical solution, the limiting arc plate 101 can provide limitation for the outer structure, and the guiding groove 102 can limit the arc-shaped plate 404 to maintain the stability of sliding adjustment.

[0022] Specifically, an adjusting knob 202 is installed at the end of the adjusting screw 203, and a combined bearing 201 is installed on one side of the adjusting knob 202. The combined bearing 201 is located inside the lower end of the arc-shaped bracket 1.

[0023] Through the above technical solution, the adjusting knob 202 can provide a grip for the user to conveniently control the rotation of the adjusting screw 203, and the combined bearing 201 can assist the adjusting knob 202 to rotate.

[0024] Specifically, four groups of limiting guide rods 205 are installed on one side of the movable frame 2 where the fixed screw sleeve 204 is provided. The limiting guide rods 205 are located inside the lower end of the arc-shaped bracket 1, and three groups of slots 206 are formed inside the movable frame 2 away from the fixed screw sleeve 204.

[0025] Through the above technical solution, the limiting guide rods 205 are used to limit the movable frame 2 to maintain the adjustment stability, and the slots 206 are used to provide a splicing position for the inserting rods 302.

[0026] Specifically, a connecting plate 301 is installed on the left side of the lower end of the clamping bracket 3, and three groups of inserting rods 302 are installed on the top of the connecting plate 301. The inserting rods 302 are located inside the slots 206. One side of the clamping plate 303 is connected by a bearing to a rotating screw 304. The rotating screw 304 is located inside the front or back of the clamping bracket 3, and a rotating knob 305 is installed at the end of the rotating screw 304.

[0027] Through the above technical solution, the connecting plate 301 can be spliced with the bottom of the movable frame 2. After the inserting rods 302 are inserted into the slots 206, they can be kept stable. The rotating screw 304 can drive the clamping plate 303 to move through rotation to clamp the bed frame, and the rotating knob 305 can provide a grip for the user to conveniently move the clamping plate 303 for fixing.

[0028] Specifically, an arc-shaped plate 404 is installed on the left side of the limiting frame 401, and the arc-shaped plate 404 is located inside the guiding groove 102.

[0029] Through the above technical solution, the arc-shaped plate 404 can slide and adjust along the inside of the limiting arc plate 101.

[0030] Specifically, four groups of limiting plates 402 are installed on the top of the limiting frame 401, and fixed bearings 403 are arranged on the inner sides of the upper ends of the limiting plates 402, and supporting wheels 405 are arranged on the inner sides of the fixed bearings 403.

[0031] Through the above technical solution, the limiting plates 402 can provide an installation position for the fixed bearings 403, and at the same time can assist the supporting wheels 405 on the inner side to rotate to support the connecting wire 601.

[0032] Specifically, a connector 502 is installed inside the left end of the housing 501, and the connector 502 is respectively connected to the connecting wire 601, the adjusting motor 503 and the emotion analysis component 505, and a lens 506 is installed at the bottom of the image collector 5.

[0033] Through the above technical solution, the connector 502 is used to connect various structures, and the lens 506 can collect images to obtain the emotion information of the patient.

[0034] Specifically, a winch 607 is arranged on the outer side of the rotating winch 602, and a bearing ring 606 is arranged on the inner side of the winch 607, and the bearing ring 606 is located on the inner side of the left end of the rotating winch 602.

[0035] Through the above technical solution, the winch 607 can provide an installation position for the inner structure, and the bearing ring 606 can assist the rotating winch 602 to rotate.

[0036] Embodiment 2, a method for using a reminder device for facial state recognition, includes the following steps: S1. First, measure the length of the bed frame, grasp the adjustment knob 202 to drive the adjustment screw 203. During the rotation of the adjustment screw 203, it will push the fixed nut sleeve 204 and the movable frame 2 on the back to move for position adjustment. After adjustment, insert the insertion rod 302 of the clamping frame 3 into the inner side of the slot 206 of the movable frame 2. After insertion, splice the movable frame 2 and the clamping frame 3 onto the bracket of the bed frame at the same time; S2. Then, grasp and turn the knob 305 to control the rotation of the rotating screw 304. During the rotation, due to the threaded structure being tightly movably connected to the clamping frame 3, the rotation will control the movement of the clamping plate 303 on the back. The movement will clamp the bed frame, and then connect the wire 604 to the alarm panel above the hospital bed; S3. The lens 506 of the re-image collector 5 scans the face of the patient on the hospital bed and determines the position. The scan can be analyzed by the internal emotion analysis component 505, and the analyzed data is transmitted to the nurse station through the alarm panel via a line. At the same time, the image collector 5 continuously analyzes the position of the patient's face, and uses the signal to control the adjustment gear 504 to rotate through the adjustment motor 503. The rotation will drive the limit frame 401 to slide along the arc-shaped bracket 1 along the gear groove 103. The sliding will ensure that the lens 506 always aims at the patient's face to maintain image acquisition. The collected information is preprocessed using point cloud data acquisition and modeling, and then the emotion of the patient is recognized and analyzed through feature extraction and description. At the same time, HRV information is extracted from the video image through the photoplethysmography (PPG) technology. The obtained HRV feature and the expression emotion feature are combined to generate a new feature vector, and the medical staff is provided with information for nursing or emergency rescue according to the analyzed information; S4. Finally, during the movement of the movable limit frame 401, the connection line 601 will send a signal to the drive motor 7, and the drive motor 7 will control the drive gear 701 to rotate. The rotation will drive the rotating winch 602 to rotate synchronously along the central energized slip ring 603. During the rotation, the wound connection line 601 will be released, and the connection line 601 will be placed inside the support wheel 405 to maintain a guiding state.

[0037] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A facial state recognition reminder device, characterized in that: include: An arc-shaped bracket (1), wherein movable brackets (2) for adjusting the spacing are provided on the inner sides of both ends of the arc-shaped bracket (1), and a clamping bracket (3) for fixing the bed frame is provided on the outer sides of the movable bracket (2); A movable frame (4), the movable frame (4) being rotatably connected to the arc-shaped bracket (1), a picture collector (5) and a state analysis component (505) being provided on the outer side of the movable frame (4), an electrical connection device (6) being provided on the top of the movable frame (4), and the picture collector (5) being connected to a lens (506); The image collector (5) includes an adjusting gear (504) that cooperates with the gear groove (103) inside the arc-shaped bracket (1); the adjusting gear (504) is driven by the adjusting motor (503) to drive the moving bracket (4) to rotate along the arc-shaped bracket (1).

2. The facial state recognition reminder device according to claim 1, characterized in that: A limiting arc plate (101) is installed on the top of the arc bracket (1), and a guide groove (102) is provided on the side of the arc bracket (1). A limiting arc groove (104) is provided on the bottom of the arc bracket (1), and the limiting arc groove (104) and the limiting arc plate (101) are slidably combined with the moving frame (4).

3. The facial state recognition reminder device according to claim 2, characterized in that: The movable frame (4) comprises a limit frame (401), the top of the limit frame (401) is provided with a groove engaging with the limit arc plate (101), the limit frame (401) is provided with an arc plate (404) cooperating with the guide groove (102), and the top of the limit frame (401) is provided with a support wheel (405) cooperating with the electrical connection device (6).

4. The facial state recognition reminder device according to claim 3, characterized in that: The electrical connection device (6) comprises a connection line (601), the connection line (601) passes through a limit frame (401) and is electrically connected to a picture collector (5) and a state analysis component (505); a rotating capstan (602) is provided at the end of the connection line (601), an energized slip ring (603) is provided on the inner side of the rotating capstan (602), a gear ring (605) is installed on the rotating capstan (602), and a driving gear (701) is meshed at the top of the gear ring (605), and a driving motor (7) is provided at the input end of the driving gear (701).

5. The facial state recognition reminder device according to claim 4, characterized in that: The picture collector (5) is provided with a housing (501) on the outside, and a connector (502) is installed inside the housing (501), and the connector (502) is respectively connected to the connecting line (601), the regulating motor (503) and the emotion analysis component (505).

6. The facial state recognition reminder device according to claim 1, characterized in that: The movable frame (2) is provided with an adjusting screw (203) connected to the arc-shaped bracket (1); one end of the adjusting screw (203) is connected to the arc-shaped bracket (1) via a combined bearing (201), and the other end is connected to the movable frame (2) via a fixed screw sleeve (204).

7. The facial state recognition reminder device according to claim 6, characterized in that: An adjusting knob (202) is provided at one end of the adjusting screw rod (203) away from the movable frame (2); four sets of limiting guide rods (205) are installed on one side of the movable frame (2) provided with a fixing screw sleeve (204); and a slot (206) for plugging into the clamping frame (3) is provided on the movable frame (2).

8. The facial state recognition reminder device according to claim 7, characterized in that: The clamping frame (3) is installed with a connecting plate (301), and three groups of insertion rods (302) are installed on the top of the connecting plate (301), and the insertion rods (302) are located on the inner side of the slot (206).

9. The facial state recognition reminder device according to claim 1, characterized in that: A clamping plate (303) is provided in the clamping slot of the clamping frame (3), one side of the clamping plate (303) is connected to a rotating screw rod (304) via a bearing, and the rotating screw rod (304) is located on the inner side of the front or back side of the clamping frame (3), and a rotating knob (305) is installed at the end of the rotating screw rod (304).

10. The method for using the facial state recognition reminder device according to any one of claims 1 to 9, characterized in that: Includes steps: S1. First, measure the length of the bed frame, and simultaneously splice the movable frame (2) and the clamping frame (3) onto the bracket of the bed frame by adjusting the movable frame (2) and the clamping frame (3); S2, adjusting the clamping frame (3) to clamp it onto the bed frame, and then connecting the wire (604) in the electrical connection device (6) to the alarm panel above the bed; S3, the lens (506) of the image collector (5) scans and determines the position of the patient on the bed. The scan can be analyzed by the internal emotion analysis component (505), and the analyzed data is then transmitted to the nurse station through the alarm panel via the line. At the same time, the image collector (5) will continue to analyze the position of the patient's face, and control the adjustment gear (504) to rotate by using the adjustment motor (503) through the signal. The rotation will drive the limit frame (401) along the arc bracket (1) to slide and adjust along the gear groove (103). The sliding will ensure that the lens (506) is always aimed at the patient's face to maintain image acquisition. The collected information is pre-processed by point cloud data acquisition and modeling, and then the patient's emotion recognition and analysis are performed through feature extraction and description. At the same time, HRV information is extracted from the video image by the photoplethysmography (IPPG) method, and the two features of the HRV feature and the facial expression feature are combined to generate a new feature vector. According to the analyzed information, medical staff are provided with care or emergency rescue; S4. During the movement of the last moving frame (4), the connecting wire (601) will send a signal to the driving motor (7), and the driving motor (7) will control the driving gear (701) to rotate. The rotation will drive the rotating capstan (602) to rotate synchronously along the energized slip ring (603) in the middle, and the entangled connecting wire (601) will be released during the rotation.

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