CN116567406B - Face recognition automatic focusing video camera and control method thereof - Google Patents

Abstract

The invention relates to the field of video cameras, in particular to an automatic focusing type video camera for face recognition and a control method thereof. Including the bottom plate subassembly, the bottom plate subassembly top is provided with the positioning subassembly, install spacing subassembly on the positioning subassembly, fixed mounting has the focus subassembly on the spacing subassembly, be provided with the camera body on the spacing subassembly, spacing subassembly includes the disc body, the focus subassembly includes miniature electric putter, install fifth micro motor on miniature electric putter's the output, the transmission is connected with the baffle on the output of fifth micro motor, install the focus lens on a side wall of baffle, the focus lens is close to a side wall edge of disc body and installs the loudspeaker cover structure, the sealing cushion layer is installed to the edge of loudspeaker cover structure. The embodiment improves the focusing recognition effect and simultaneously avoids the condition that the focusing is not in place due to the reflection of the environment.

Description

A face recognition autofocus video camera and its control method

Technical field

The invention belongs to the technical field of video cameras, and in particular relates to a face recognition automatic focusing video camera and a control method thereof.

Background technique

A camera, also known as a computer camera, computer eye, electronic eye, etc., is a video input device that is widely used in video conferencing, telemedicine, and real-time monitoring.

After searching, among the existing technologies, Chinese Patent Publication No.: CN115776610A, Publication Date: 2023-03-10, announced a camera shooting control method and device for freight vehicle cargo monitoring, including obtaining freight at the current preset detection time point The current driving conditions of the vehicle; based on the current driving conditions of the freight vehicle and the historical driving conditions of the freight vehicle obtained at the last preset detection time point, determine the status of the camera installed on the freight vehicle; if the camera The state is the monitoring state, then the shooting interval is determined based on the current driving conditions of the freight vehicle, and the camera is controlled to shoot and upload the cargo status image based on the shooting interval. The above embodiment improves the real-time and accuracy of cargo monitoring. sex.

However, this device still has the following defects: when the human body is in a moving state, its face cannot be positioned and recognized, and when the light conditions during work are not conducive to focusing, it cannot be wrapped. When the recognition distance is too far, , face recognition cannot be performed by focusing, making the focusing effect inefficient, thereby reducing the focusing effect of the video camera.

Contents of the invention

In order to solve the above problems, the present invention provides a face recognition automatic focusing video camera. It includes a base plate assembly, a position adjustment assembly is provided on the top of the base plate assembly, a limit assembly is installed on the position adjustment assembly, a focusing assembly is fixedly installed on the limit assembly, and a camera body is provided on the limit assembly. The limiting component includes a disk body, the focusing component includes a micro electric push rod, a fifth micro motor is installed on the output end of the micro electric push rod, and a gear is connected to the output end of the fifth micro motor. plate, a focusing lens is installed on one side wall of the baffle, a horn cover structure is installed near the edge of one side wall of the disc body, and the horn cover structure is installed near one end edge of the disc body. There is a gasket.

Further, a protective shell is provided on the top of the position adjustment component, and a slot is provided in a vertical direction on one side of the outer wall of the protective shell.

Further, the base plate assembly includes a base plate body, a chute is provided at the bottom of the base plate body, the sliding direction of the chute is horizontal, and two sets of screw rods are provided in the chute, and the two sets of screw rods are both Rotatingly connected to the inner walls of both sides of the chute, the screw threads of the two groups are in opposite directions, the central axes of the screws of the two groups are located on the same straight line, and a set of sliding plates are threadedly connected to each group of screws. Each set of sliding plates is slidably connected in the chute.

Further, a set of mounting plates is connected to the bottom of each set of sliding plates. Several sets of first snap-in slots are provided at equal intervals at the bottom of each set of mounting plates. The side walls of each set of mounting plates are provided with evenly spaced openings. There are several sets of second snap-in slots, and a connecting plate is provided directly below the mounting plate. Each set of connecting plates is a cylindrical structure.

Further, several groups of snap-in blocks are evenly spaced on the top of each group of connecting plates. Each group of snap-in blocks is a cylindrical structure, and each group of snap-in blocks is movably connected to any group of the first snap-in block. In the first snap-in slot and the second snap-in slot.

Further, the positioning assembly includes a fixed plate. Two sets of placing plates are symmetrically arranged on the top of the fixed plate. One set of the placing plates is equipped with a micro electric slide on one side wall, and the other set of the placing plates is installed with a miniature electric slide. A mounting block is installed on the side wall of the board close to the micro electric slide table. A slide track is provided on the side wall of the mounting block close to the micro electric slide table. The sliding direction of the slide track is vertical.

Further, a third micro motor is slidingly connected to the output end of the micro electric slide, and a positioning plate is drivingly connected to the output end of the third micro motor. The positioning plate is located directly above the fixed plate. One end of the positioning plate away from the third micromotor is slidably connected in the slideway.

Further, the limiting assembly includes a disk body, a circular hole is provided in the center of one side wall of the disk body, and a number of holes are provided in an annular array on the side wall of the disk body away from the positioning plate. Each group of sliding chambers is provided with a set of threaded rods, and each group of threaded rods is rotatably connected to the inner walls of both sides of the sliding chamber.

Further, each group of the threaded rods is threadedly connected to a set of sliding blocks, each group of the sliding blocks is slidingly connected in the sliding cavity, and each group of the sliding blocks is mounted on a side wall away from the positioning plate. A set of fixed rods, and a set of rubber cushions are movably connected to the outer wall of each set of fixed rods. Furthermore, several sets of fourth micromotors are distributed in an annular array on the side wall of the disc body, and each set of The output end of the fourth micromotor penetrates the disc body and is connected to one of the specified groups of threaded rods. Each group of threaded rods is equipped with a set of blocks on the side wall away from the fourth micromotor.

A face recognition autofocus video camera control method, the control method includes:

Plug the camera body into the limiting component;

Fix the camera body by controlling the limit component;

Install the base plate assembly at the job site;

Adjust the installation position of the camera body by controlling the base plate assembly;

Adjust the height correction and front-view angle of the camera angle by controlling the positioning component, as well as the upward or downward view of the camera angle;

Start the fifth micro motor, and the fifth micro motor drives the baffle to rotate, and the baffle drives the focusing lens to rotate to the front of the camera body for face recognition;

Start the micro electric push rod, and the electric push rod drives the focusing lens to move to the camera body, and wraps the face recognition end of the camera body through the sealing cushion.

The beneficial effects of the present invention are:

1. In order to improve the recognition effect of autofocus, start the fifth micro motor to drive the focusing lens to move to the front of the camera body for face recognition, then start the micro electric push rod to drive the focusing lens to move to the camera body, and then use the sealing cushion to The face recognition end of the camera body is wrapped, which improves its focus recognition effect and avoids reflections from the environment causing insufficient focus.

2. The camera body is fixed and limited through the limit component, which plays a role in relieving pressure during the fixation process, avoiding wear and tear of the camera body while increasing friction, improving the convenience of installing the camera body, and improving its Flexibility for subsequent replacement and movement of the camera body.

3. When the working place is not convenient for installation, the first micro motor can be started to drive the connecting plate to move, and then fixed through the connecting plate, which reduces the labor intensity of installation and disassembly, improves its installation flexibility and enhances its convenience. When the connecting plate is not convenient to place, it can be disassembled through the clamping block and the first clamping slot, and then the clamping block on the connecting plate and the second clamping slot can be flexibly connected to improve the stability of the device. sex.

4. Start the fifth micro motor to drive the focusing lens to move to the front of the camera body for face recognition, then start the micro electric push rod to drive the focusing lens to move to the camera body, and then use the sealing cushion to perform the face recognition end of the camera body. package, improving its focus recognition effect.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and obtained by the structure pointed out in the written description, claims and appended drawings.

Description of the drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 shows a schematic structural diagram of a video camera according to an embodiment of the present invention;

Figure 2 shows a schematic cross-sectional view of a protective shell according to an embodiment of the present invention;

Figure 3 shows a schematic structural diagram of a limiting component according to an embodiment of the present invention;

Figure 4 shows a schematic cross-sectional view of a base plate assembly according to an embodiment of the present invention;

Figure 5 shows a schematic structural diagram of a position adjustment component according to an embodiment of the present invention;

Figure 6 shows a top cross-sectional view of the limiting assembly according to an embodiment of the present invention;

Figure 7 shows a schematic structural diagram of a focusing assembly according to an embodiment of the present invention.

In the figure: 1. Base plate assembly; 101. Base plate body; 102. Screw rod; 103. Chute; 104. Sliding plate; 105. Installation plate; 106. First snap-in slot; 107, snap-in block; 108. Connection board; 109. The first micro motor; 110. The second micro motor; 111. The second clamping slot; 2. Position adjustment component; 201. Fixing plate; 202. Placement plate; 203. Micro electric slide; 204. No. Three micro motors; 205, mounting block; 206, slide; 207, positioning plate; 3, protective shell; 4, slot; 5, limit component; 501, disc body; 502, threaded rod; 503, slide Cavity; 504, sliding block; 505, fixed rod; 506, rubber cushion; 507, stopper; 508, fourth micro motor; 6, focusing component; 601, micro electric push rod; 602, fifth micro motor; 603 , Baffle; 604. Focusing lens; 605. Speaker cover structure; 606. Sealing cushion; 7. Camera body.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

An embodiment of the present invention provides a face recognition automatic focusing video camera. It includes a base plate assembly 1. For example, as shown in Figures 1, 2 and 3, the base plate assembly 1 is provided with a position adjustment assembly 2 on the top. The position-limiting component 5 is installed on the position-adjusting component 2 . A focusing component 6 is fixedly installed on the limiting component 5 , and a camera body 7 is provided on the limiting component 5 . The positioning component 2 is used to adjust the vertical position of the camera body 7; the position limiting component 5 is used to disassemble and install the camera body 7; and the focusing component 6 is used to focus the lens of the camera body 7.

A protective shell 3 is provided on the top of the positioning assembly 2, and a slot 4 is provided in the vertical direction on one side of the outer wall of the protective shell 3.

Exemplarily, as shown in Figures 4 and 5, the base plate assembly 1 includes a base plate body 101. A chute 103 is provided at the bottom of the base plate body 101. The sliding direction of the chute 103 is horizontal. The chute 103 is arranged horizontally. There are two sets of screw rods 102 inside 103. The two sets of screw rods 102 are rotatably connected to the inner walls of both sides of the chute 103. The thread directions of the two sets of screw rods 102 are opposite. The central axis of the two sets of screw rods 102 is Located on the same straight line, each group of the screw rods 102 is threadedly connected to a group of sliding plates 104 , and each group of the sliding plates 104 is slidably connected in the chute 103 .

A set of mounting plates 105 is connected to the bottom of each set of sliding plates 104. Several sets of first snap-in slots 106 are provided at the bottom of each set of mounting plates 105 at equal intervals. The side walls of each set of mounting plates 105 are equally spaced. Several sets of second snap-in slots 111 are provided, and a connecting plate 108 is provided directly below the mounting plate 105. Each group of connecting plates 108 is a cylindrical structure, and a number of connecting plates 108 are evenly spaced on the top of each group. A group of clamping blocks 107, each group of the clamping blocks 107 is a cylindrical structure, and each group of the clamping blocks 107 is movably connected to any group of the first clamping groove 106 and the second clamping slot 111 Inside.

A first micromotor 109 is installed on one side of the inner wall of the bottom plate body 101 , and the output end of the first micromotor 109 is drivingly connected to one of the groups of screw rods 102 .

After the camera body 7 is fixed in place, if the current working place is not convenient for installation, the first micro motor 109 can be started. The first micro motor 109 drives the screw rod 102 to rotate, and the screw rod 102 drives the sliding plate 104 to slide in the chute 103. The connecting plate 108 is driven to move along, and then fixed through the connecting plate 108, which reduces the labor intensity of installation and disassembly, improves the installation flexibility and enhances the convenience.

When the connecting plate 108 is inconvenient to be placed, it can be disassembled through the clamping block 107 and the first clamping slot 106, and then the clamping block 107 on the connecting plate 108 can be flexibly connected with the second clamping slot 111 to achieve the desired effect. It acts as a support to improve the stability of the device.

A second micromotor 110 is provided in the bottom plate body 101. The output end of the second micromotor 110 penetrates the bottom plate body 101 and is connected to the positioning assembly 2. The positioning assembly 2 includes a fixing plate 201, so Two sets of placing plates 202 are symmetrically arranged on the top of the fixed plate 201. One set of the placing plates 202 is equipped with a micro electric slide 203 on one side wall. The model of the miniature electric slide 203 is MF40. The other set is A mounting block 205 is installed on the side wall of the placing plate 202 close to the micro electric slide 203. A slide 206 is provided on the side wall of the mounting block 205 close to the micro electric slide 203. The sliding direction of the slide 206 is For vertical arrangement, a third micro motor 204 is slidingly connected to the output end of the micro electric sliding table 203, and a positioning plate 207 is drivingly connected to the output end of the third micro motor 204. The positioning plate 207 is located at Directly above the fixed plate 201, one end of the positioning plate 207 away from the third micromotor 204 is slidably connected in the slide 206.

When the camera body 7 needs to adjust the angle, the second micro motor 110 can be started, and the second micro motor 110 drives the fixed plate 201 to rotate. Since the camera body 7 and the fixed plate 201 are in a connected state, the second micro motor 110 is rotating. The camera body 7 is then driven to adjust the angle.

When the camera body 7 needs to be height corrected and the viewing angle adjusted, the miniature electric slide 203 can be started to drive the camera body 7 down, which can be suitable for use by people of different heights so that their viewing angles are always in a head-on state. When looking up or down, the third micro motor 204 is started to drive the positioning plate 207 to rotate, and the positioning plate 207 in turn drives the camera body 7 to rotate.

Exemplarily, as shown in Figures 2, 5 and 6, one side wall of the positioning plate 207 is fixedly installed on the limiting assembly 5. The limiting assembly 5 includes a disc body 501. A circular hole is provided in the center of one side wall of the disk body 501. A number of groups of sliding cavities 503 are provided in an annular array on the side wall of the disc body 501 away from the positioning plate 207. Each group of the sliding cavities 503 has a circular hole in the center. Each group of threaded rods 502 is provided with a group of threaded rods 502, and each group of the threaded rods 502 is rotatably connected to the inner walls of both sides of the sliding chamber 503. Each group of the threaded rods 502 is threadedly connected to a group of sliding blocks 504, and each group of the sliding blocks 504 is threadedly connected. The blocks 504 are all slidingly connected in the sliding cavity 503. A set of fixed rods 505 is installed on the side wall of each group of the sliding blocks 504 away from the positioning plate 207. The outer walls of each group of the fixed rods 505 are movable sockets. There is a set of rubber pads 506.

Several groups of fourth micro-motors 508 are distributed in an annular array on the side wall of the disc body 501. The output end of each group of the fourth micro-motors 508 penetrates the disc body 501 and is then drivingly connected to one of the designated groups. On the threaded rods 502, a set of blocks 507 is installed on the side wall of each group of the threaded rods 502 away from the fourth micromotor 508.

Before using the camera body 7, it is first placed between several sets of fixing rods 505, and then several sets of fourth micromotors 508 are started.

The fourth micro motor 508 drives the threaded rod 502 to rotate, and the threaded rod 502 drives the sliding block 504 to slide in the sliding cavity 503, and in turn drives several groups of fixed rods 505 to move toward the camera body 7, because the several groups of fixed rods 505 are distributed in an annular array. , so it is not limited to the shape of the camera body 7 to limit and fix it, and during the fixing process, the rubber cushion layer 506 can be used to relieve pressure, thereby avoiding wear of the camera body 7 and improving friction.

Exemplarily, as shown in Figures 3, 6 and 7, one end of a set of fixed rods 505 away from the disc body 501 is fixedly installed on the focusing assembly 6. The focusing assembly 6 includes a micro electric push rod 601 , the model of the micro electric push rod 601 is 38STG-50, the fifth micro motor 602 is installed on the output end of the micro electric push rod 601, the first micro motor 109, the second micro motor 110, the third The models of the micro motor 204, the fourth micro motor 508 and the fifth micro motor 602 are all HFF-K10VA. A baffle 603 is drivingly connected to the output end of the fifth micromotor 602. A focusing lens 604 is installed on one side wall of the baffle 603. The focusing lens 604 is close to the edge of one side wall of the disk body 501. A horn cover structure 605 is installed, and a sealing cushion layer 606 is installed at one end edge of the horn housing structure 605 close to the disc body 501. The sealing cushion layer 606 is made of rubber structure.

In order to improve the recognition effect of autofocus, the fifth micro motor 602 can be started. The fifth micro motor 602 drives the baffle 603 to rotate. The baffle 603 drives the focusing lens 604 to move to the front of the camera body 7 for face recognition, and then the micro motor is started. The push rod 601 drives the focusing lens 604 to move toward the camera body 7, and then wraps the face recognition end of the camera body 7 through the sealing cushion layer 606. Since the sealing cushion layer 606 is a soft structure, it can be combined with the camera body 7 The gap between them is filled, which improves the focus recognition effect while avoiding environmental reflections that cause the focus to be out of place. Then the work begins.

This embodiment has the following beneficial effects:

In order to improve the recognition effect of autofocus, the fifth micro motor 602 is started to drive the focusing lens 604 to move to the front of the camera body 7 for face recognition, and then the micro electric push rod 601 is started to drive the focusing lens 604 to move to the camera body 7, and then through The sealing cushion layer 606 wraps the face recognition end of the camera body 7, which improves the focus recognition effect and avoids insufficient focus due to environmental reflections.

The camera body 7 is fixed and limited by the limiting component 5, which plays a role in relieving pressure during the fixing process, avoiding wear and tear of the camera body 7 while increasing the friction, improving the convenience of installing the camera body, and improving the The camera body is flexible for subsequent replacement and movement.

When the working place is not convenient for installation, the first micro motor 109 can be started to drive the connecting plate 108 to move, and then fixed through the connecting plate 108, which reduces the labor intensity of installation and disassembly, improves its installation flexibility and strengthens its Convenience, when the connecting plate 108 is not convenient to place, it can be disassembled through the clamping block 107 and the first clamping groove 106, and then the clamping block 107 on the connecting plate 108 can be flexibly connected with the second clamping slot 111 , to improve the stability of the device.

The fifth micro motor 602 is started to drive the focusing lens 604 to move to the front of the camera body 7 for face recognition, and then the micro electric push rod 601 is started to drive the focusing lens 604 to move towards the camera body 7 , and then the camera body 7 is aligned with the sealing cushion layer 606 The face recognition end is wrapped to improve its focus recognition effect.

Based on the above-mentioned face recognition auto-focus video camera, embodiments of the present invention also propose a control method for the video camera. Exemplarily, the control method includes:

Place the camera body between several sets of fixed rods;

Start the fourth micro motor, and the fourth micro motor drives the threaded rod to rotate. The threaded rod drives the sliding block to slide in the sliding cavity, and then drives several sets of fixed rods to move toward the camera body so that they are fixed around the outer wall of the camera body;

Detach the clamping block from the first clamping slot, and then clamp the clamping block in the second clamping slot;

Start the second micro motor, the second micro motor drives the fixed plate to rotate, and the fixed plate drives the camera body to adjust the installation position;

Start the miniature electric slide to drive the camera body down to meet the adjustment of camera angle height correction and front view angle adjustment;

The third micro motor is started to drive the positioning plate to rotate through the third micro motor, and the positioning plate drives the camera body to rotate to meet the upward or downward adjustment of the camera angle;

Start the fifth micro motor, and the fifth micro motor drives the baffle to rotate, and the baffle drives the focusing lens to rotate to the front of the camera body for face recognition;

Start the micro electric push rod, and the electric push rod drives the focusing lens to move to the camera body, and wraps the face recognition end of the camera body through the sealing cushion.

Start the fifth micro motor to drive the focusing lens to move directly in front of the face recognition of the camera body, then start the micro electric push rod to drive the focusing lens to move to the camera body, and then wrap the face recognition end of the camera body through the sealing cushion layer. Improved its focus recognition effect.

Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these Modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims (6)

1. A face recognition auto-focus video camera, characterized by: including a base plate assembly (1), a positioning assembly (2) is provided on the top of the base plate assembly (1), and the positioning assembly (2) is Install a limiting component (5), a focusing component (6) is fixedly installed on the limiting component (5), and a camera body (7) is provided on the limiting component (5); The positioning assembly (2) includes a fixed plate (201). Two sets of placing plates (202) are symmetrically arranged on the top of the fixed plate (201). One set of the placing plates (202) is installed on one side wall. There is a micro electric slide table (203), and another set of placement plates (202) is equipped with a mounting block (205) on a side wall close to the micro electric slide table (203). The mounting block (205) is close to the micro electric slide table (203). A slideway (206) is provided on one side wall of the slideway (203), and the sliding direction of the slideway (206) is vertical. The output end of the microelectric slideway (203) is slidably connected to a third micron slideway (206). Motor (204), the output end of the third micromotor (204) is connected to an adjusting plate (207), and the adjusting plate (207) is located directly above the fixed plate (201). One end of the plate (207) away from the third micromotor (204) is slidably connected in the slideway (206). The limiting component (5) includes a disc body (501), and an end of the disc body (501) There is a circular hole in the center of the side wall, and several groups of sliding cavities (503) are provided in an annular array on the side wall of the disc body (501) away from the positioning plate (207). Each group of the sliding cavities (503) 503) is provided with a set of threaded rods (502). Each set of threaded rods (502) is rotatably connected to the inner walls of both sides of the sliding cavity (503). Each set of threaded rods (502) is threadedly connected. There is a group of sliding blocks (504), each group of the sliding blocks (504) is slidingly connected in the sliding cavity (503), and each group of the sliding blocks (504) has a A set of fixed rods (505) is installed, and a set of rubber cushions (506) are movably connected to the outer wall of each set of fixed rods (505). The side walls of the disc body (501) are distributed in an annular array. There are several groups of fourth micro-motors (508). The output end of each group of the fourth micro-motors (508) penetrates the disc body (501) and is connected to one of the specified groups of threaded rods (502). A set of blocks (507) is installed on the side wall of the threaded rod (502) away from the fourth micro motor (508). The focusing assembly (6) includes a micro electric push rod (601). The electric push rod (601) is connected to one of the side walls of one group of fixed rods (505) away from the disc body (501), and the camera body (7) is arranged between several groups of fixed rods (505). A fifth micromotor (602) is installed on the output end of the micro electric push rod (601), and a baffle (603) is drivingly connected to the output end of the fifth micromotor (602). The baffle (603) A focusing lens (604) is installed on one side wall of the disc body (501), and a horn cover structure (605) is installed on the edge of the side wall of the focusing lens (604) close to the disc body (501). The horn cover structure (605) 605) A sealing gasket (606) is installed near the edge of one end of the disk body (501). 2. A face recognition auto-focus video camera according to claim 1, characterized in that: a protective shell (3) is provided on the top of the position adjustment component (2), and one side of the protective shell (3) Slots (4) are provided in the vertical direction on the side outer wall. 3. A face recognition auto-focus video camera according to claim 2, characterized in that: the base plate assembly (1) includes a base plate body (101), and a chute is provided at the bottom of the base plate body (101) (103), the sliding direction of the chute (103) is set horizontally, and two sets of screw rods (102) are provided in the chute (103). Both sets of screw rods (102) are rotationally connected to the chute. On both sides of the inner walls of (103), the thread directions of the two groups of screw rods (102) are opposite, the central axes of the two groups of screw rods (102) are located on the same straight line, and the screw rods (102) of each group are A set of sliding plates (104) is threadedly connected, and each set of sliding plates (104) is slidably connected in the chute (103). 4. A face recognition auto-focus video camera according to claim 3, characterized in that: a set of mounting plates (105) is connected to the bottom of each set of sliding plates (104), and each set of mounting plates (105) There are several sets of first snap-in slots (106) at equal intervals at the bottom, and several sets of second snap-in slots (111) at equal intervals on the side walls of each group of the mounting plates (105). A connecting plate (108) is provided directly below the plate (105), and each group of connecting plates (108) has a cylindrical structure. 5. A face recognition auto-focus video camera according to claim 4, characterized in that: there are several groups of snap-in blocks (107) evenly spaced on the top of each group of connecting plates (108), and each group has The clamping blocks (107) are all cylindrical structures, and each group of the clamping blocks (107) is movably connected in any group of the first clamping groove (106) and the second clamping groove (111). . 6. A control method for the face recognition auto-focus video camera according to any one of claims 1 to 5, characterized in that: the control method includes: Plug the camera body into the limiting component; Fix the camera body by controlling the limit component; Install the base plate assembly at the job site; Adjust the installation position of the camera body by controlling the base plate assembly; Adjust the height of the camera and the camera angle to look up or down by controlling the positioning component; Start the fifth micro motor, and the fifth micro motor drives the baffle to rotate, and the baffle drives the focusing lens to rotate to the front of the camera body for face recognition; Start the micro electric push rod, and the electric push rod drives the focusing lens to move to the camera body, and wraps the face recognition end of the camera body through the sealing cushion.