CN218568079U - Classroom real-time attendance system based on computer vision - Google Patents
Classroom real-time attendance system based on computer vision Download PDFInfo
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- CN218568079U CN218568079U CN202221633656.3U CN202221633656U CN218568079U CN 218568079 U CN218568079 U CN 218568079U CN 202221633656 U CN202221633656 U CN 202221633656U CN 218568079 U CN218568079 U CN 218568079U
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Abstract
The utility model relates to an attendance management technical field, specifically speaking relates to real-time attendance system in classroom based on computer vision, including the attendance machine, the attendance machine is including hanging the body and setting up in hanging the body bottom the body of making a video recording the body, it is equipped with the link plate to hang body both ends symmetry, the square plate of link plate for seting up circular cross cut, it has seted up logical groove in vivo to hang, it is connected with reciprocal lead screw to lead to the groove rotation, reciprocal lead screw one end transmission is connected with a motor, a motor and hang body one side surface fixed connection, it is equipped with the regulation body to hang body bottom, the regulation body includes top and reciprocal lead screw threaded connection's hanger plate, the hanger plate bottom is connected with the bottom plate, the bottom plate bottom is connected with the chassis, the camera body includes the overcoat that top is connected bottom the chassis, the inside groove has been seted up to the overcoat bottom, be equipped with the camera in the inside groove. The utility model discloses a camera scanning student's face has reached attendance management's purpose to the camera can remove, enlarges the field of vision scope of camera.
Description
Technical Field
The utility model relates to an attendance management technical field, specifically speaking relates to real-time attendance system in classroom based on computer vision.
Background
In order to accurately master the learning quality and time of students, colleges and universities generally carry out classroom attendance, the traditional classroom attendance management mainly adopts roll call and sign-in modes, so that the time consumption is high, the precious teaching time is occupied, the situation of imposition is easy to occur, the attendance management effect is poor, and in order to realize the classroom real-time attendance of students, a classroom real-time attendance system based on computer vision is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a real-time attendance system in classroom based on computer vision to solve the problem of proposing in the above-mentioned background art.
In order to realize the above-mentioned purpose, the utility model provides a real-time attendance system in classroom based on computer vision, including the attendance machine, the attendance machine including hang the body and set up in hang the camera body of body bottom, it is equipped with the link plate to hang body both ends symmetry, the link plate is for seting up the square plate of circular wearing, it has seted up logical groove to hang internally, it is connected with reciprocal lead screw to lead to the groove rotation, reciprocal lead screw one end transmission is connected with the motor, the motor with hang a body side surface fixed connection, it is equipped with the regulation body to hang body bottom, the regulation body include the top with reciprocal lead screw threaded connection's hanger plate, the hanger plate bottom is connected with the bottom plate, the bottom plate bottom is connected with the chassis, the camera body include the top with the overcoat that the chassis bottom is connected, the inside groove has been seted up to the overcoat bottom, be equipped with the camera in the inside groove.
As a further improvement of the technical scheme, the through groove is provided with a clamping groove close to the inner surface of the bottom end, two ends of the clamping groove are connected with elastic belts, the elastic belts are close to one end of the hanging plate and provided with end plates, and the end plates are fixedly connected with the surface of the hanging plate.
As a further improvement of the technical scheme, circular through holes are symmetrically formed in two ends of the bottom of the hanging plate, side rods are symmetrically arranged at two ends of the upper surface of the bottom plate and penetrate through the circular through holes, spiral rings are connected to the surfaces of the side rods in a threaded mode, and the bottoms of the spiral rings are in clamping fit with the circular through holes.
As a further improvement of the technical scheme, the middle of the bottom plate is provided with a second motor, the bottom of the second motor is in transmission connection with a rotary table, and the bottom of the rotary table is rotatably connected with the top of the chassis.
As a further improvement of the technical scheme, the bottom of the outer sleeve is provided with a sheath, and the bottom of the sheath is provided with a glass plate.
As a further improvement of the technical scheme, the top of the sheath is in sleeve joint with the bottom of the outer sleeve, clamping plates are in insertion joint with the two sides of the sheath, and one end of the top of each clamping plate is in insertion joint with the outer sleeve.
As a further improvement of the technical scheme, the surface of one side of the outer sleeve is provided with a pyroelectric inductor, and an infrared light emitting tube is arranged on a classroom door.
Compared with the prior art, the beneficial effects of the utility model are that:
1. in the real-time class attendance system based on the computer vision, the circular penetrating opening is formed in the hanging plate, so that the hanging body and the indoor ceiling are fixed by the bolts penetrating through the hanging plate, and the camera equipment is fixed conveniently.
2. In the real-time class attendance system based on computer vision, the reciprocating screw rod is driven to rotate through the first motor, so that the reciprocating screw rod drives the hanging plate to move back and forth at the bottom of the hanging body, the camera is driven to move back and forth, the visual field range of the camera is enlarged, and the real-time class attendance of students is facilitated.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the cross-section structure of the hanging body of the present invention.
Fig. 3 is a schematic view of the structure of the adjusting body of the present invention.
Fig. 4 is the schematic view of the sectional structure of the camera body of the present invention.
Fig. 5 is the induction circuit schematic diagram of the attendance machine of the utility model.
The various reference numbers in the figures mean:
1. an attendance machine;
11. a hanging body; 111. hanging plates; 112. a through groove; 113. a reciprocating screw rod; 114. a first motor; 115. a card slot; 116. an elastic band; 117. an end plate;
12. an image pickup object; 121. a jacket; 122. an inner tank; 123. a camera; 124. a sheath; 125. a glass plate; 126. clamping a plate; 127. a pyroelectric sensor;
13. an adjuster; 131. a hanger plate; 132. a base plate; 133. a chassis; 134. a side lever; 135. a spiro ring; 136. a second motor; 137. a turntable.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-4, the present embodiment provides a computer vision-based real-time class attendance system, which includes an attendance machine 1, the attendance machine 1 includes a hanging body 11 and a camera body 12 disposed at the bottom of the hanging body 11, in order to facilitate the realization of real-time class attendance of students due to the poor application effect of the traditional roll-call attendance management, first, in order to facilitate the fixation of the camera equipment, hanging plates 111 are symmetrically disposed at both ends of the hanging body 11, the hanging plates 111 are square plates with circular through holes, circular through holes are disposed on the hanging plates 111 so that bolts pass through the hanging plates 111 to fix the hanging body 11 with the indoor ceiling plate, thereby facilitating the fixation of the camera equipment, in order to ensure the visual field range of the camera equipment, through grooves 112 are disposed in the hanging body 11, the through groove 112 is rotatably connected with a reciprocating screw rod 113, one end of the reciprocating screw rod 113 is connected with a motor 114 in a transmission manner, the motor 114 is fixedly connected with one side surface of the hanging body 11, the bottom of the hanging body 11 is provided with an adjusting body 13, the adjusting body 13 comprises a hanging plate 131, the top of which is in threaded connection with the reciprocating screw rod 113, the bottom of the hanging plate 131 is connected with a bottom plate 132, the bottom of the bottom plate 132 is connected with a chassis 133, the camera body 12 comprises an outer sleeve 121, the bottom of the outer sleeve 121 is connected with an inner groove 122, a camera 123 is arranged in the inner groove 122, the reciprocating screw rod 113 is driven by the motor 114 to rotate, so that the reciprocating screw rod 113 drives the hanging plate 131 to move back and forth at the bottom of the hanging body 11, the camera 123 is driven to move back and forth, the visual field range of the camera 123 is enlarged, and real-time attendance of students in class is facilitated.
The camera 123 of the embodiment preferably adopts a MegEye-C4H-240 camera, which is an intelligent network camera with interaction defined based on a personnel passage scene, can realize the entrance guard application of a small scene in a single machine closed loop manner, is widely used in a non-inductive passage and high-frequency attendance checking scene, and can easily cope with a common backlight scene of passage application based on superior wide dynamic image capability.
The working principle is as follows: the camera 123 scans the appearances of students entering or leaving the classroom, attendance management of the students is achieved, the first motor 114 drives the reciprocating screw rod 113 to rotate, the camera 123 is driven to move back and forth, the camera 123 is enlarged in the shooting visual field, and omission is avoided.
In order to prevent sundries from entering the through groove 112 to clamp the hanging plate 131, a clamping groove 115 is formed in the bottom end inner surface of the through groove 112, the clamping groove 115 is a square groove, the two ends of the clamping groove 115 are connected with the elastic band 116, the end plate 117 is arranged at one end, close to the hanging plate 131, of the elastic band 116, the end plate 117 is fixedly connected with the surface of the hanging plate 131, through the elastic band 116 and the end plate 117, when the hanging plate 131 moves along the through groove 112, the hanging plate 131 drives the elastic band 116 to shrink and stretch correspondingly through the end plate 117, the bottom of the through groove 112 is blocked by the elastic band 116, and accordingly sundries are prevented from entering the through groove 112.
In order to adjust the height of the camera 123 conveniently, circular through holes are symmetrically formed in two ends of the bottom of the hanging plate 131, side rods 134 are symmetrically formed in two ends of the upper surface of the bottom plate 132, the side rods 134 penetrate through the circular through holes, a spiral ring 135 is connected to the surface of each side rod 134 in a threaded mode, the bottom of the spiral ring 135 is in clamping fit with the circular through holes, the side rods 134 and the spiral ring 135 are arranged, the spiral ring 135 is rotated on the surface of each side rod 134 in a threaded mode, the bottom plate 132 can be driven to lift in the circular through holes, and therefore the heights of the bottom plate 132 and the camera 123 can be changed conveniently.
In order to facilitate adjustment camera 123's the angle of making a video recording, bottom plate 132 middle part is equipped with No. two motors 136, no. two motor 136 bottom transmission is connected with carousel 137, carousel 137 bottom is rotated with chassis 133 top and is connected, through the mode of rotating the connection, make No. two motors 136 drive the carousel 137 rotation, can drive camera 123 and take place the angular variation at the horizontal plane, rotate chassis 133 in carousel 137 bottom, can drive camera 123 and take place the angular variation at vertical face, thereby be convenient for adjust camera 123's the angle of making a video recording.
In order to protect the camera 123 from being damaged, the sheath 124 is arranged at the bottom of the outer sleeve 121, the sheath 124 is a hollow cylinder, the glass plate 125 is arranged at the bottom of the sheath 124, the bottom of the camera 123 is shielded by the sheath 124, the camera 123 can be protected from being damaged, and the camera 123 can conveniently take a picture of the outside world by being provided with the glass plate 125 while the bottom of the camera 123 is protected.
In order to facilitate the clearance to sheath 124, sheath 124 top and overcoat 121 bottom cup joint the cooperation, the cylindrical recess has been seted up to sheath 124 both sides, the cooperation of pegging graft in sheath 124 both sides has cardboard 126, cardboard 126 is equipped with the bellied square slab of cylinder for upper and lower both ends one side, overcoat 121 surface symmetry has seted up the cylindrical recess, cardboard 126 top one end is pegged graft the cooperation with overcoat 121, overcoat 121 cup joints with sheath 124 so that the dismantlement combination of sheath 124, in addition through the complex mode of pegging graft, make overcoat 121 and sheath 124 realize fixed connection through cardboard 126.
The computer vision-based classroom real-time attendance system of the embodiment is characterized in that when the system is used specifically, a side rod 134 is moved up and down in a circular through hole of a hanging plate 131 to drive a bottom plate 132 to lift, the height of a camera 123 is changed, a second motor 136 drives a rotary plate 137 and further drives the camera 123 to rotate on a horizontal plane through a base plate 133, the base plate 133 is rotated at the bottom of the rotary plate 137, the camera 123 is rotated on a vertical plane, the angle of the camera 123 is adjusted until a pyroelectric sensor 127 is aligned with an infrared light emitting tube on a classroom door, students need to push a classroom door open before going into the classroom or after leaving the classroom, namely, the infrared light emitting tube is moved, the pyroelectric sensor 127 cannot receive infrared light emitted by the infrared light, the electric motor 1 is powered on a circuit, the camera 123 scans the appearance of students entering the classroom, attendance management of the classroom is realized, and a first motor 114 drives a reciprocating screw rod 113 to rotate so as to drive the camera 123 to move back and forth through the hanging plate 131 in threaded connection with the reciprocating screw rod 113, so as to enlarge the camera 123 and avoid missing of the camera 123.
Example 2
In order to save power, a side surface of the outer sleeve 121 is provided with a pyroelectric sensor 127, an infrared light emitting tube is arranged on a classroom door, and by arranging the pyroelectric sensor 127, after the classroom door is opened, the pyroelectric sensor 127 cannot receive light from the infrared light emitting tube, so that a circuit is conducted, the attendance machine 1 is powered on and operates, namely, when no person in the classroom closes the classroom door, the pyroelectric sensor 127 can receive the light from the infrared light emitting tube, the circuit is disconnected, so that the attendance machine 1 is powered off and powered off, and the electricity is saved.
The pyroelectric inductor 127 is a phototransistor T1, the infrared luminotron is a light emitting diode VD, the induction circuit further comprises a chip IC, resistors R1 and R, R, a voltage divider RP, a relay RL, a diode D1 and a triode T2, wherein the chip IC is a CA3140 high input impedance operational amplifier,
a pin 2 of the chip IC is connected with a voltage divider RP, one end of the voltage divider RP is connected with resistors R1 and R2 and is connected with a VCC end in parallel, the other end of the voltage divider RP is connected with a phototransistor T1 and a light-emitting diode VD and is connected with a GND end in parallel, and the resistor R1 is connected with the other end of the light-emitting diode VD;
the pin No. 3 of the chip IC is connected with the other end of the resistor R2 and connected with the other end of the phototransistor T1 in parallel, and the pin No. 4 of the chip IC is connected with the GND end;
the No. 6 pin of the chip IC is connected with the resistor R3, and the No. 7 pin of the chip IC is connected with the VCC end;
the resistor R3 is connected with the triode T2, one end of the triode T2 is connected with the GND end, the other end of the triode T2 is connected with the relay RL, the diode D1 is connected with the relay RL in parallel, the N/O contact of the relay RL is connected with the load, namely the attendance machine 1, the attendance machine 1 is connected with the N phase, the N/C contact of the relay RL is connected with the L phase, and the relay RL is connected with the VCC end.
The circuit is connected with a VCC end to enable the light-emitting diode VD to emit infrared light, at the moment, a collector of the phototransistor T1 is connected to a pin No. 3, namely an in-phase input pin, of the chip IC, a pin No. 2, namely an anti-phase input pin, is connected to the voltage divider RP, the voltage divider RP is adjusted to change reference voltage of the anti-phase input pin, the voltage can affect the sensitivity of the phototransistor T1, the chip IC amplifies a signal sent from the phototransistor T1, a pin No. 6 of the chip IC outputs high potential to drive the triode T2 to conduct electricity, the relay RL is enabled to attract, a contact N/O of the relay RL is connected with an external electrical appliance, when a student enters or leaves a classroom, a classroom door is pushed, the phototransistor T1 cannot receive the infrared light of the light-emitting diode VD, the N/O of the relay RL keeps connected, at the moment, the attendance machine 1 is powered to work, when the classroom door is closed, the relay RL is released, and the attendance machine 1 is powered off.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only the preferred embodiments of the present invention, and is not intended to limit the present invention, and that there may be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. Real-time attendance system in classroom based on computer vision, including attendance machine (1), its characterized in that: attendance machine (1) including hang body (11) and set up in hang body (12) of making a video recording of body (11) bottom, hang body (11) both ends symmetry and be equipped with link plate (111), link plate (111) are for seting up the square plate of circular opening of wearing, logical groove (112) have been seted up in hanging body (11), it is connected with reciprocal lead screw (113) to lead to groove (112) rotation, reciprocal lead screw (113) one end transmission is connected with motor (114), motor (114) with hang body (11) one side fixed surface and be connected, it is equipped with regulation body (13) to hang body (11) bottom, regulation body (13) include the top with hanger plate (131) of reciprocal lead screw (113) threaded connection, hanger plate (131) bottom is connected with bottom plate (132), bottom plate (132) bottom is connected with chassis (133), it includes the top with overcoat (121) that chassis (133) bottom is connected to take a video recording body (12), overcoat (121) have seted up interior groove (122) bottom, be equipped with interior groove camera (123) in interior groove (122).
2. The computer vision-based real-time class attendance system of claim 1, wherein: the through groove (112) is provided with a clamping groove (115) close to the inner surface of the bottom end, two ends of the clamping groove (115) are connected with an elastic belt (116), one end, close to the hanging plate (131), of the elastic belt (116) is provided with an end plate (117), and the end plate (117) is fixedly connected with the surface of the hanging plate (131).
3. The computer vision based real-time class attendance system of claim 1, wherein: circular openings are symmetrically formed in two ends of the bottom of the hanging plate (131), side rods (134) are symmetrically arranged at two ends of the upper surface of the bottom plate (132), the side rods (134) penetrate through the circular openings, spiral rings (135) are in threaded connection with the surfaces of the side rods (134), and the bottoms of the spiral rings (135) are in clamping fit with the circular openings.
4. The computer vision based real-time class attendance system of claim 1, wherein: the middle of the bottom plate (132) is provided with a second motor (136), the bottom of the second motor (136) is in transmission connection with a rotary table (137), and the bottom of the rotary table (137) is rotatably connected with the top of the chassis (133).
5. The computer vision based real-time class attendance system of claim 1, wherein: the bottom of the outer sleeve (121) is provided with a sheath (124), and the bottom of the sheath (124) is provided with a glass plate (125).
6. The computer vision based real-time class attendance system of claim 5, wherein: the top of the sheath (124) is in sleeve fit with the bottom of the outer sleeve (121), clamping plates (126) are in plug fit with two sides of the sheath (124), and one end of the top of each clamping plate (126) is in plug fit with the outer sleeve (121).
7. The computer vision based real-time class attendance system of claim 1, wherein: the surface of one side of the outer sleeve (121) is provided with a pyroelectric inductor (127), and an infrared light emitting tube is arranged on a classroom door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221633656.3U CN218568079U (en) | 2022-06-28 | 2022-06-28 | Classroom real-time attendance system based on computer vision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221633656.3U CN218568079U (en) | 2022-06-28 | 2022-06-28 | Classroom real-time attendance system based on computer vision |
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| Publication Number | Publication Date |
|---|---|
| CN218568079U true CN218568079U (en) | 2023-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221633656.3U Active CN218568079U (en) | 2022-06-28 | 2022-06-28 | Classroom real-time attendance system based on computer vision |
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| CN (1) | CN218568079U (en) |
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- 2022-06-28 CN CN202221633656.3U patent/CN218568079U/en active Active
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