CN209448834U - A kind of long-distance education video recording equipment multimachine position imaging control device - Google Patents

Abstract

A kind of long-distance education video recording equipment multimachine position imaging control device, including Switching Power Supply, camera, PC machine, it is characterized in that also having control circuit, support base, every set control circuit includes infra-red detection sub-circuit, switch sub-circuit, rpyroelectric infrared detecting module, switching sub-circuit is mounted in subassembly wrapper, subassembly wrapper front end is equipped with an arc Fresnel lens, the lower supporting plate of every set control circuit subassembly wrapper upper end upper junction plate and every set support base links together, Switching Power Supply is mounted in plastic casing, the upper end frame body of three sets of cameras is separately mounted to three subassembly wrapper lower ends, Switching Power Supply, camera, PC machine is connected with control circuit through conducting wire.The utility model enters PC machine in use, the switching sub-circuit of three sets of control circuits switches three sets of camera output videos respectively, and remote learner can clearly watch the education activities in teacher each orientation at dais as far as possible, improve the effect of long-distance education.Based on above-mentioned, so the prospect that the utility model has had.

Description

A kind of long-distance education video recording equipment multimachine position imaging control device

Technical field

The utility model relates to teaching equipment auxiliary facility field, especially a kind of long-distance education video recording equipment multimachine position is clapped Take the photograph control device.

Background technique

Remote online education is the side that content propagation and Fast Learning is carried out by application message science and technology and Internet technology Method, remote online education is the teaching method using network as medium as its name suggests, by network, even if student is separated by with teacher Interactive teaching and learning activity can also be carried out in ten thousand, really broken the limitation in space, long-distance education can also effectively be realized including outstanding The shared education resources of teacher etc., therefore using more and more extensive in teaching.Remote online education mainly passes through teacher platform The camera of front middle part carries out real-time recording to the instructional video of teacher, and the video then shot application in PC machine (computer) is soft After part processing, by network real-time delivery to the online student of distal end.

In remote online education, when live teacher carries out education activities, demonstration operation is carried out either on blackboard, Or position can all occur at dais for operation experiments equipment etc. mobile, that is to say, that teacher is not at dais in teaching Fixed position, in this way, since existing remote teaching apparatus only has a camera, it can only be living to the teacher at the certain visual angle of fixation Dynamic information is effectively shot and is transmitted (camera generally to image in the intermediate region of dais), when teacher's active interval is taken the photograph When as head farther out, due to the limitation of distance and angle, the video information clarity of shooting will be affected camera, then Remote learner also just can not effectively see the teaching movement of teacher, or demonstration operation (such as the nothing in the progress such as blackboard corner Method sees the formula that teacher writes in blackboard edge, draws etc., can not see in teacher's teaching and go to dais side hand Movement etc. is gesticulated in teaching), can thus certain influence be brought on the effect of long-distance education.

Based on above-mentioned, provide it is a kind of can by teacher, instructional video action message feeds back to distal end and learns at dais as far as possible Member, the equipment for improving remote teaching effect seem particularly necessary.

Utility model content

In order to overcome picture pick-up device used in existing long-distance education, because camera is mounted in fixed position, visual angle has Limit cannot effectively cover teacher in teaching and cause remote learner effectively can not clearly watch teacher in the movable range in dais The educational activities information in all directions at dais, the drawbacks of causing long-distance education effect to be affected, the utility model provides With three sets of cameras, three sets of control circuits, in the case where three sets of control circuits act on, three sets of cameras can carry out video output automatically Switching is shot when ensure that body movement in teacher's teaching as far as possible by nearest camera, and camera is input in PC machine Vision signal is as close possible to the education activities for reacting teacher, so that remote learner clearly can watch teacher at dais as far as possible The education activities for locating each orientation which thereby enhance a kind of long-distance education video recording equipment multimachine position shooting control of long-distance education effect Device processed.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

A kind of long-distance education video recording equipment multimachine position imaging control device, including Switching Power Supply, camera, PC machine, it is special Sign is also there is control circuit, support base, and support base, camera, control circuit respectively have three sets, and every set support base includes upper solid Determine plectane, connecting tube, lower connecting rod, middle part is mounted on fixed disc lower end in connecting tube, and the lower part side of connecting tube has one A tool internal thread aperture, screwing in aperture has a hand screw, the upper end cap of lower connecting rod in connecting tube lower end, under The lower, transverse of connecting rod is equipped with a lower supporting plate, and every set control circuit includes infra-red detection sub-circuit, switching son electricity Road, infra-red detection sub-circuit are the rpyroelectric infrared detecting module of model HN911L, rpyroelectric infrared detecting module, switching Circuit is installed on circuit boards, and circuit board is mounted on rear side in subassembly wrapper, and the detecting head of rpyroelectric infrared detecting module is located at member Part box front end, subassembly wrapper front end are Open architecture, and subassembly wrapper front end is equipped with an arc Fresnel lens, every set control Laterally there are a upper junction plate, every set control circuit subassembly wrapper upper end upper junction plate and every set support base in the subassembly wrapper upper end of circuit Lower supporting plate link together, Switching Power Supply is mounted in plastic casing, and the upper end frame body of three sets of cameras is separately mounted to three A subassembly wrapper lower end, the camera lens of camera are located at the detecting head direction one of subassembly wrapper front end and rpyroelectric infrared detecting module finished product It causes, lateral separation distance is mounted at the dais of classroom on ceiling three sets of support bases respectively, first set control circuit and first Camera is located at dais middle part on ceiling, and Switching Power Supply, the power input of PC machine and 220V AC power source the two poles of the earth are through leading Line is separately connected, and the power output end of Switching Power Supply and the positive and negative polarities power input of first set control circuit are respectively through conducting wire Connection, the power output end of first set control circuit, the negative power supply output end of Switching Power Supply and second set, third set control electricity The positive and negative polarities power input on road is connected through conducting wire respectively, the video output both ends of three sets of cameras respectively with first set, the Two sets, third set control circuit signal input part connected through video line, first set, second set, third cover control circuit letter Number output end is connected in parallel through video line, it is in parallel after two terminals of two video lines and a video plug be separately connected, Video plug is inserted into the video input socket of PC machine, the power supply of Switching Power Supply output both ends respectively with three sets of cameras, two electricity Source input terminal is connected through conducting wire.

The Switching Power Supply is that alternating current 220V turns direct-current switch power supply module.

The switching sub-circuit of the first set control circuit includes adjustable resistance, resistance, relay, NPN triode, switching It is connected between sub-circuit and infra-red detection sub-circuit through circuit board wiring, adjustable resistance both ends and rpyroelectric infrared detecting module The external resistance terminal 4 of finished product and the connection of 5 feet, 3 foot of cathode power supply input terminal of rpyroelectric infrared detecting module finished product and first Relay cathode power supply input terminal and control power input connection, 1 foot of output end of rpyroelectric infrared detecting module finished product and The connection of resistance one end, the resistance other end are connected with NPN transistor base, NPN triode collector and first relay cathode Power input connection, 6 foot of rpyroelectric infrared detecting module finished product negative power supply input terminal and NPN triode emitter, second Relay, third relay, the 4th relay negative power supply input terminal connection, first relay normally open contact end and Second relay cathode power supply input terminal and control power input, third relay cathode power supply input terminal and control electricity Source input terminal, the 4th relay cathode power supply input terminal connection.

The switching sub-circuit of second set of control circuit includes adjustable resistance, resistance, relay, NPN triode, switching It is connected between sub-circuit and infra-red detection sub-circuit through circuit board wiring, adjustable resistance both ends and rpyroelectric infrared detecting module The external resistance terminal 4 of finished product and the connection of 5 feet, 3 foot of cathode power supply input terminal and relay of rpyroelectric infrared detecting module finished product The connection of cathode power supply input terminal, 1 foot of output end of rpyroelectric infrared detecting module finished product are connected with resistance one end, the resistance other end It is connected with NPN transistor base, NPN triode collector is connected with relay negative power supply input terminal, rpyroelectric infrared detection 6 foot of module finished product negative power supply input terminal is connected with NPN triode emitter.

The utility model beneficial effect is: the utility model in use, when teacher teaching in dais generate thermal infrared signal, It can be detected by the infra-red detection sub-circuit of three sets control circuits is seamless respectively, in turn, the switching of three sets control circuits is sub electric Road switches three sets of camera output videos respectively and enters PC machine, and then PC machine will be shot as close possible to front end camera at teacher Delivery of video to networking student, ensure that as far as possible teacher teaching in body movement when taken by nearest camera, take the photograph As head is input to the vision signal in PC machine as close possible to the education activities of reaction teacher, so that remote learner can be as clear as possible The clear education activities for watching teacher each orientation at dais, such as student can see the public affairs that teacher writes in blackboard edge Formula, drawing etc., it is seen that go to hand teaching in dais side in teacher's teaching and gesticulate movement etc., which thereby enhance long-distance education Effect.Based on above-mentioned, so the application prospect that the utility model has had.

Detailed description of the invention

The utility model is described further below in conjunction with drawings and examples.

Fig. 1 is structural representation of the utility model wherein between a set of support base, control circuit, camera and Switching Power Supply Figure.

Fig. 2 is the utility model circuit diagram.

Specific embodiment

Shown in Fig. 1, a kind of long-distance education video recording equipment multimachine position imaging control device, including Switching Power Supply 1, camera 2, PC machine also has control circuit 3, support base 4, and support base 4, camera 2, control circuit 3 respectively have three sets, every set support base 4 Including upper fixed disc 41, connecting tube 42, lower connecting rod 43, middle part is welded on 41 lower end of fixed disc in connecting tube 42, even There is a tool internal thread aperture in the lower part side of adapter tube 42, and screwing in aperture has a hand screw 44, lower connecting rod 43 Upper end cap in 42 lower end of connecting tube, hand screw 44 screw with 43 side of lower connecting rod be in close contact after, lower connecting rod 43 It will not be moveed downward along connecting tube 42, the lower, transverse of lower connecting rod 43 is welded with the lower supporting plate that a middle part has aperture 45, every set control circuit 3 includes infra-red detection sub-circuit 31, switching sub-circuit 32, and infra-red detection sub-circuit 31 is model The rpyroelectric infrared detecting module finished product of HN911L, rpyroelectric infrared detecting module finished product 31, switching sub-circuit 32 are mounted on electricity On the plate of road, circuit board is mounted on rear side in subassembly wrapper 5, and the detecting head of rpyroelectric infrared detecting module finished product 31 (is located at Fresnel On rear side of lens) it is located at 5 front end of subassembly wrapper, 5 front end of subassembly wrapper is Open architecture, and 5 front end of subassembly wrapper is equipped with an arc phenanthrene Nie Er lens finished product 33, the detecting head investigative range for expanding rpyroelectric infrared detecting module finished product 31, every set control circuit 5 upper end of subassembly wrapper laterally has one to be integrally formed the upper junction plate 51 that middle part has axis hole, every set control circuit subassembly wrapper upper end 51 axis hole of upper junction plate is linked together by 45 aperture of lower supporting plate of screw rod, nut and every set support base, and Switching Power Supply 1 is pacified In plastic casing 6, plastic casing 6 is mounted in indoor electric control cabinet, and the upper end frame body of three sets of cameras 2 passes through screw rod respectively Nut is mounted on three 5 lower ends of subassembly wrapper, the camera lens of camera 2 be located at 5 front end of subassembly wrapper and rpyroelectric infrared detecting module at For the detecting head of product 31 towards unanimously, three sets of support bases pass through multiple mounting hole expansion bolts around upper fixed disc 41 respectively Lateral separation certain distance is mounted at the dais of classroom on ceiling, (4 meters of three sets of support bases 4 and dais space before certain distance Left and right), first set control circuit 3 and first camera 2 are located at dais middle part on ceiling,

Shown in Fig. 2, Switching Power Supply A1 is that the alternating current 220V of the bright latitude of brand turns 6V direct-current switch power supply module finished product, is had Two power inputs 1 and 2 feet, two power output ends 3 and 4 feet.Camera A5, A6, A7 brand is YOELBAER/ reputation despot, Model is YB-WG008A, and there are two 6V power inputs for tool, and video output terminals, its own shell upper end have mounting rack all the way Body.The switching sub-circuit of first set control circuit includes adjustable resistance RP, resistance R1, relay J1, J2, J3, J4, tri- pole NPN Pipe Q1；It is connected between switching sub-circuit and infra-red detection sub-circuit through circuit board wiring, the both ends adjustable resistance RP and pyroelectricity The external resistance terminal 4 of infrared detection module finished product A2 and the connection of 5 feet, the cathode power supply of rpyroelectric infrared detecting module finished product A2 are defeated Enter 3 feet of end and the first cathode power supply input terminal pole relay J1 control power input connection, rpyroelectric infrared detecting module 1 foot of output end of finished product A2 is connected with the one end resistance R1, and the another one end R1 of resistance is connected with NPN triode Q1 base stage, NPN triode Q1 collector and first relay J1 negative power supply input terminal connection, rpyroelectric infrared detecting module finished product A2 negative power supply are defeated Enter 6 feet of end and NPN triode Q1 emitter, second relay J2, third relay J3, the 4th relay J4 negative electricity The connection of source input terminal, first relay J1 normally opened contact end and second relay J2 cathode power supply input terminal and control power supply Input terminal, third relay J3 cathode power supply input terminal and control power input, the 4th relay J4 cathode power supply are defeated Enter end connection.The switching sub-circuit of second set of control circuit includes adjustable resistance RP1, resistance R2, relay J5, NPN triode Q2 switches and connects between sub-circuit and infra-red detection sub-circuit through circuit board wiring, and the both ends adjustable resistance RP1 and pyroelectricity are red The external resistance terminal 4 of outer detecting module finished product A3 and the connection of 5 feet, the cathode power supply input of rpyroelectric infrared detecting module finished product A3 3 feet are held to connect with relay J5 cathode power supply input terminal, 1 foot of output end and resistance R2 of rpyroelectric infrared detecting module finished product A3 One end connection, the resistance R2 other end are connected with NPN triode Q2 base stage, NPN triode Q2 collector and relay J5 negative electricity The connection of source input terminal, 6 foot of rpyroelectric infrared detecting module finished product A3 negative power supply input terminal and NPN triode Q3 emitter connect It connects.The switching sub-circuit of third set control circuit includes adjustable resistance RP2, resistance R3, relay J6, NPN triode Q3, switching It is connected between sub-circuit and infra-red detection sub-circuit through circuit board wiring, the both ends adjustable resistance RP2 and rpyroelectric infrared detection The external resistance terminal 4 of module finished product A4 and the connection of 5 feet, 3 foot of cathode power supply input terminal of rpyroelectric infrared detecting module finished product A4 It is connected with relay J6 cathode power supply input terminal, 1 foot of output end of rpyroelectric infrared detecting module finished product A4 and the one end resistance R3 Connection, the resistance R3 other end are connected with NPN triode Q3 base stage, and NPN triode Q3 collector and relay J6 negative power supply are defeated Enter end connection, 6 foot of rpyroelectric infrared detecting module finished product A4 negative power supply input terminal is connected with NPN triode Q3 emitter.Three When covering the rpyroelectric infrared detecting module finished product work of control circuit, the detecting head of front end is acted on plus Fresnel Lenses, energy Realize that (every rpyroelectric infrared detecting module finished product adds Fresnel to the seamless detection of dais front end transverse direction physical activity infrared signal Lens can detect the activity infrared signal of dais front end human body in the fan-shaped range of 4 meters or so of front end), three sets of camera A5, A6, A7 front lens distinguish three orientation on front side of parallel alignment dais.

Shown in Fig. 2, power input 1 and 2 feet, the power input of PC machine and 220V AC power source of Switching Power Supply A1 The two poles of the earth are separately connected through conducting wire, the power output end 3 and 4 feet of Switching Power Supply A1 and the positive and negative polarities power supply of first set control circuit Input terminal relay J1 cathode power supply input terminal and NPN triode Q1 emitter are connected through conducting wire respectively, first set control circuit Power output end relay J2 normally-closed contact end and relay J3 normally-closed contact end, Switching Power Supply A1 negative power supply output end The positive and negative polarities power input relay J5 cathode power supply input terminal and NPN triode Q2 hair of 4 feet and second set of control circuit The positive and negative polarities power input relay J6 cathode power supply input terminal and NPN triode Q3 hair of emitter-base bandgap grading, third set control circuit Emitter-base bandgap grading is connected through conducting wire respectively, and the video of three sets of cameras A5, A6, A7 export the both ends signal with first set control circuit respectively Input terminal relay J4 two control power inputs, two controls of signal input part relay J5 of second set of control circuit are electric Two signal input part relay J6, two control power inputs that source input terminal, third cover control circuit connect through video line Connect, the two normally opened contact ends first set control circuit signal output end relay J4, second set of control circuit signal output end after The two normally opened contact ends electric appliance J5, third set two normally opened contact ends control circuit signal output end relay J6 are through video line point It is not connected in parallel, two terminals of two video lines and a video plug CT are separately connected after parallel connection, and video plug CT is inserted Enter in the video input socket CZ of PC machine, the power supply of Switching Power Supply A1 output both ends 3 and 4 feet respectively with three sets of camera A5, A6, Two power inputs of A7 are connected through conducting wire.

Fig. 1, shown in 2, the utility model before use, operator by adjusting the upper ends of three sets of support base lower connecting rods 43 respectively Upper-lower height and circumferencial direction in 42 lower end of connecting tube can adjust three sets of cameras 2 and three sets of control circuit heat respectively The preceding height and direction that electric infrared detection module finished product 31 is located at dais is released, three sets of cameras, three sets of control circuit heat are met That releases electric infrared detection module finished product 31 reaches actual needs towards angle and height；After regulating, three hand screws 44 It is screwed respectively along 42 side screw hole of lower connector, in this way, three hand screws 44 and three 43 sides of lower connecting rod are in close contact Afterwards, three lower connecting rods 43 will not be moveed downward along connecting tube 42, locating effect after the adjusting reached.Operator passes through difference The subassembly wrapper upper junction plate 51 of three sets of control circuits of adjusting can divide along the upper and lower position of 45 aperture of lower supporting plate of three sets of support bases Not Tiao Jie three sets of subassembly wrapper front ends pitch angle height, the subassembly wrapper upper junction plate 51 of three sets of control circuits respectively along three sets support When 45 aperture of lower supporting plate of seat is adjusted up, the pitch angle height of three sets of subassembly wrapper front ends is got higher respectively, three sets of control circuits Subassembly wrapper upper junction plate 51 when being adjusted downwards along 45 aperture of lower supporting plate of three sets of support bases respectively, three sets of subassembly wrapper front ends Pitch angle height is lower respectively, and while three sets of subassembly wrapper front end pitch angles get higher and are lower, three sets of three sets of subassembly wrapper front ends are taken the photograph As the synchronous pitch angle of spy side head of first 2 front lens, three sets of control circuit rpyroelectric infrared detecting module finished products 31 is got higher respectively It is lower, guarantees that adjusting rear camera 2, control circuit rpyroelectric infrared detecting module finished product 31 can shoot video under best angle With induction physical activity thermal infrared signal, after regulating, connect 51 axis hole of every set control circuit subassembly wrapper upper end upper junction plate, The nut tightening of the lower supporting plate 45 of every set support base can, three sets of subassembly wrappers will not move again.

Shown in Fig. 2, after 1 and 2 feet of 220V AC power source access switch power supply A1, Switching Power Supply A1 circuit inside it Under effect, 3 and 4 feet can export 6V DC power supply into three sets of cameras A5, A6, A7, two power inputs and first Cover the positive and negative polarities power input of control circuit；Three sets of cameras A5, A6, A7 and first set control circuit are in work once electrified State.In first set control circuit, first set camera: activity within the scope of 70 degree of front side among being located at dais in teacher's teaching When, any infrared energy signal of human body can all be detected by the detecting head of rpyroelectric infrared detecting module finished product A2, and pyroelectricity is red Under peripheral cell adjustable resistance RP collective effect, 1 foot of output end can export high level and enter electricity outer detecting module finished product A2 The one end R1 is hindered, high level decompression current limliting is input to NPN triode Q1 base stage by resistance R1, its collector is connected in NPN triode Q1 Output low level enter relay J1 negative power supply input terminal, then, relay J1 obtain it is electric be attracted its control power input and Normally opened contact end closure, due to relay J1 cathode power supply input terminal and control power input and Switching Power Supply A1 3 feet this Carve identical, relay J2, J3 cathode power supply input terminal and control power input, relay J4 cathode power supply input terminal and relay Device J1 normally opened contact end connects (4 feet of relay J2, J3, J4 negative power supply input terminal and Switching Power Supply A1 communicate this moment), institute Electric actuation can be obtained with relay J2, J3, J4 at this time, and relay J2, J3 obtain after electric actuation it and control power input and normally closed Tip side open circuit, since relay J2 normally-closed contact end and relay J3 normally-closed contact end are controlled with second set, third set respectively The cathode power supply input terminal of circuit connects, thus second set this moment, third cover control circuit will not work once electrified, prevent three sets Control circuit all work once electrifieds, three sets of cameras export vision signal simultaneously and affect to the work of PC；Relay J4 obtains electric After actuation, two control power input and two normally opened contact ends closure, due to, two normally opened contact ends relay J4 and One video plug CT, two terminals are separately connected, and video plug CT is inserted into the video input socket CZ of PC machine, so, this The teacher's instructional video information for carving first set camera A5 shooting can pass to PC machine, and pass to distal end after PC machine is handled and learn Member (video of camera A6, A7 output is not transferred to PC machine this moment).

Shown in Fig. 2, in second set of control circuit, second set of camera: being located at dais in teacher's teaching on front side of left end When movable in 60 degree or so ranges, this moment, the rpyroelectric infrared detecting module finished product A2 detecting head of first set control circuit is detected Less than signal, 1 foot of output end stops out-put supply, and in turn, relay J1, J2, J3, J4 whole power loss no longer works actuation, Relay J2, J3 power loss stops its control power input and normally-closed contact end closure after being attracted, due to the normally closed touching of relay J2 The cathode power supply input terminal that point end and relay J3 normally-closed contact end cover control circuit with second set, third respectively connects, so Second set this moment, third set control circuit can work once electrified, while relay J4 power loss stop be attracted after, two control electricity Source input terminal and two normally opened contact ends open circuit, due to, two normally opened contact ends relay J4 and one video plug CT two Terminals are separately connected, and video plug CT is inserted into the video input socket CZ of PC machine, so, first set camera A5 is clapped this moment The teacher's instructional video information taken the photograph is not transferred to PC machine, ensure that the delivery of video that will not be exported to subsequent camera A6, A7 It is impacted to PC machine；It is located at dais in teacher's teaching on front side of left end in 60 degree or so ranges when activity, human body generates red Outer energy signal can all be detected by the detecting head of rpyroelectric infrared detecting module finished product A3, rpyroelectric infrared detecting module finished product Under peripheral cell adjustable resistance RP1 collective effect, 1 foot of output end can export high level and enter the one end resistance R2, resistance A3 High level decompression current limliting is input to NPN triode Q2 base stage by R2, and NPN triode Q2 is connected its collector output low level and enters Relay J5 negative power supply input terminal, then, relay J5 obtain two control power input of electric actuation and two normally opened touchings Point end is respectively closed, due to, two terminals in the two normally opened contact ends relay J5 and a video plug CT are separately connected, depending on Frequency plug CT is inserted into the video input socket CZ of PC machine, so, teacher's instructional video of second set of camera A6 shooting this moment Information can pass to PC machine, and pass to after PC machine is handled remote learner (video of camera A5, A7 output will not pass this moment Pass PC machine).

Shown in Fig. 2, third covers control circuit, third covers in camera: being located at dais in teacher's teaching on front side of right end When movable in 60 degree or so ranges, this moment, the rpyroelectric infrared detecting module finished product A2 detecting head of first set control circuit is detected Less than signal, 1 foot of output end stops out-put supply, and in turn, relay J1, J2, J3, J4 whole power loss no longer works actuation, Second set, third set control circuit can work once electrified, this moment first set camera A5 shooting teacher's instructional video information not PC machine can be passed to, ensure that will not impact subsequent camera A6, A7 delivery of video exported to PC machine；Teacher's teaching In be located at dais on front side of right end in 60 degree or so ranges when activity, the infrared energy signal of human body generation all can be red by pyroelectricity The detecting head of outer detecting module finished product A4 detects, and rpyroelectric infrared detecting module finished product A4 is in peripheral cell adjustable resistance RP2 Under collective effect, 1 foot of output end can export high level and enter the one end resistance R3, and high level decompression current limliting is input to by resistance R3 NPN triode Q3 base stage, NPN triode Q3 are connected its collector output low level and enter relay J6 negative power supply input terminal, Then, relay J6 obtains two control power input of electric actuation and two normally opened contact ends are respectively closed, due to relay Two terminals in the two normally opened contact ends J6 and a video plug CT are separately connected, and the video that video plug CT is inserted into PC machine is defeated Enter in socket CZ, so, teacher's instructional video information of third set camera A7 shooting this moment can pass to PC machine, and through PC machine Remote learner is passed to after processing (video of camera A5, A6 output is not transferred to PC machine this moment).

Shown in Fig. 2, in the utility model, the detecting head of the rpyroelectric infrared detecting module finished product A2 of first set control circuit is visited Measuring angle is 70 degree or so, second set, the detecting head of rpyroelectric infrared detecting module finished product A3, A4 of third set control circuit visits Measuring angle is 60 degree or so, in fact, the angle of three sets of rpyroelectric infrared detecting module finished products detection has intersection, in this way, teacher When walking between first set control circuit and the rpyroelectric infrared detecting module finished product of second set of control circuit, since pyroelectricity is red The detecting head of outer detecting module finished product A2 has 5 degree or so of surplus, and detection can be effectively ensured, and first set, second set of heat is prevented to release There is detection blind area (the first set camera shooting of first set control circuit control this moment in the detecting head of electric infrared detection module finished product A2, A3 Head A5 output video, second set of control circuit power loss, second set of camera A6 do not export video)；Teacher walks to be controlled in first set When between circuit and the rpyroelectric infrared detecting module finished product of third set control circuit, due to rpyroelectric infrared detecting module finished product The detecting head of A2 has 5 degree or so of surplus, and detection can be effectively ensured, and prevents first set, third set rpyroelectric infrared detecting module The detecting head of finished product A2, A4 occur detection blind area ((this moment first set control circuit control first set camera A5 output video, Third set control circuit power loss, third set camera A7 do not export video.In the utility model, when what is generated in teacher's teaching at dais Thermal infrared signal can be detected by the infra-red detection sub-circuit of three sets of control circuits is seamless respectively, in turn, three sets of control circuits Switching sub-circuit switch three sets of cameras output videos respectively and enter PC machine, then PC machine will be as close possible to front end at teacher The delivery of video of camera shooting is to the student of networking, by nearest camera when ensure that body movement in teacher's teaching as far as possible It takes, camera is input to the vision signal in PC machine as close possible to the education activities of reaction teacher, thus remote learner It can clearly watch the education activities in teacher each orientation at dais, such as student that teacher can be seen in blackboard corner as far as possible Locate the formula write, draw etc., it is seen that hand teaching in dais side is gone in teacher's teaching and gesticulates movement etc., is thus improved The effect of long-distance education.

In Fig. 2, relay J1, J2, J3 are the 6V DC relays of brand pine pleasure, model DC4123；Relay J4, J5, J6 is the 6V DC relay of brand pine pleasure, model SLA-6VDC-SL, and for tool there are two power input, two control power supplys are defeated Enter end, two normally-closed contact ends, two normally opened contact ends.NPN triode Q1, Q2, Q3 model are 9013.Resistance R1, R2, R3 resistance Value is 1K.Adjustable resistance RP, RP1, RP2 specification is 1M.

The advantages of basic principles and main features and the utility model of the utility model have been shown and described above, for For those skilled in the art, it is clear that the utility model is limited to the details of above-mentioned exemplary embodiment, and without departing substantially from this reality In the case where with novel spirit or essential attributes, the utility model can be realized in other specific forms.Therefore, no matter from From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the utility model is by appended Claim rather than above description limit, it is intended that the institute that will be fallen within the meaning and scope of the equivalent elements of the claims It changes and is embraced therein.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (4)

1. a kind of long-distance education video recording equipment multimachine position imaging control device, including Switching Power Supply, camera, PC machine, feature It is that also there is control circuit, support base, support base, camera, control circuit respectively there are three sets, and every set support base includes upper fixation Plectane, connecting tube, lower connecting rod, middle part is mounted on fixed disc lower end in connecting tube, and the lower part side of connecting tube has one Has internal thread aperture, screwing in aperture has a hand screw, and the upper end cap of lower connecting rod is in connecting tube lower end, lower company The lower, transverse of extension bar is equipped with a lower supporting plate, and every set control circuit includes infra-red detection sub-circuit, switches sub-circuit, Infra-red detection sub-circuit is the rpyroelectric infrared detecting module of model HN911L, rpyroelectric infrared detecting module, switching son electricity Road is installed on circuit boards, and circuit board is mounted on rear side, the detecting head of rpyroelectric infrared detecting module in subassembly wrapper and is located at element Box front end, subassembly wrapper front end are Open architecture, and subassembly wrapper front end is equipped with an arc Fresnel lens, every set control electricity Laterally there is a upper junction plate in the subassembly wrapper upper end on road, every set control circuit subassembly wrapper upper end upper junction plate and every set support base Lower supporting plate links together, and Switching Power Supply is mounted in plastic casing, and the upper end frame body of three sets of cameras is separately mounted to three Subassembly wrapper lower end, the camera lens of camera are located at the detecting head direction one of subassembly wrapper front end and rpyroelectric infrared detecting module finished product It causes, lateral separation distance is mounted at the dais of classroom on ceiling three sets of support bases respectively, first set control circuit and first Camera is located at dais middle part on ceiling, and Switching Power Supply, the power input of PC machine and 220V AC power source the two poles of the earth are through leading Line is separately connected, and the power output end of Switching Power Supply and the positive and negative polarities power input of first set control circuit are respectively through conducting wire Connection, the power output end of first set control circuit, the negative power supply output end of Switching Power Supply and second set, third set control electricity The positive and negative polarities power input on road is connected through conducting wire respectively, the video output both ends of three sets of cameras respectively with first set, the Two sets, third set control circuit signal input part connected through video line, first set, second set, third cover control circuit letter Number output end is connected in parallel through video line, it is in parallel after two terminals of two video lines and a video plug be separately connected, Video plug is inserted into the video input socket of PC machine, the power supply of Switching Power Supply output both ends respectively with three sets of cameras, two electricity Source input terminal is connected through conducting wire.

2. a kind of long-distance education video recording equipment multimachine position imaging control device according to claim 1, it is characterised in that open Powered-down source is that alternating current 220V turns direct-current switch power supply module.

3. a kind of long-distance education video recording equipment multimachine position imaging control device according to claim 1, it is characterised in that the The switching sub-circuit of a set of control circuit includes adjustable resistance, resistance, relay, NPN triode, switches sub-circuit and infrared ray It is connected between detection sub-circuit through circuit board wiring, the outer connecting resistance at adjustable resistance both ends and rpyroelectric infrared detecting module finished product Hold the connection of 4 and 5 feet, 3 foot of cathode power supply input terminal and first relay cathode power supply of rpyroelectric infrared detecting module finished product Input terminal and control power input connection, 1 foot of output end of rpyroelectric infrared detecting module finished product are connected with resistance one end, electricity The resistance other end is connected with NPN transistor base, NPN triode collector and first relay negative power supply input terminal connection, 6 foot of rpyroelectric infrared detecting module finished product negative power supply input terminal and NPN triode emitter, second relay, third are only Relay, the 4th relay negative power supply input terminal connection, first relay normally open contact end and second relay are just Pole power input and control power input, third relay cathode power supply input terminal and control power input, the 4th The connection of relay cathode power supply input terminal.

4. a kind of long-distance education video recording equipment multimachine position imaging control device according to claim 1, it is characterised in that the The switching sub-circuit of two sets of control circuits includes adjustable resistance, resistance, relay, NPN triode, switches sub-circuit and infrared ray It is connected between detection sub-circuit through circuit board wiring, the outer connecting resistance at adjustable resistance both ends and rpyroelectric infrared detecting module finished product Hold the connection of 4 and 5 feet, 3 foot of cathode power supply input terminal and relay cathode power supply input terminal of rpyroelectric infrared detecting module finished product Connection, 1 foot of output end of rpyroelectric infrared detecting module finished product are connected with resistance one end, the resistance other end and NPN triode base Pole connection, NPN triode collector are connected with relay negative power supply input terminal, rpyroelectric infrared detecting module finished product negative electricity Input terminal 6 foot in source is connected with NPN triode emitter.