CN204029178U - A kind of recording and broadcasting system writing on the blackboard control device - Google Patents
A kind of recording and broadcasting system writing on the blackboard control device Download PDFInfo
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- CN204029178U CN204029178U CN201420409786.8U CN201420409786U CN204029178U CN 204029178 U CN204029178 U CN 204029178U CN 201420409786 U CN201420409786 U CN 201420409786U CN 204029178 U CN204029178 U CN 204029178U
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Abstract
The utility model relates to a kind of recording and broadcasting system writing on the blackboard control device.Existing recording and broadcasting system has debug difficulties, the common fault that effect is undesirable.The utility model provides a kind of recording and broadcasting system writing on the blackboard control device, comprise apparatus for writing and writing on the blackboard video camera, it is characterized in that: also comprise Vibration induction element, shock sensor, signal converter, Dao Boji, described Vibration induction element is arranged in apparatus for writing, described Vibration induction element is connected with vibrations converter, described vibrations converter is connected with signal converter, and described signal converter is connected with instructor in broadcasting's machine, and described instructor in broadcasting's machine is connected with writing on the blackboard video camera.The utility model reasonable in design, by the impact of light source, also can not can not produce the limitation of erroneous judgement and trigger range by image range restriction.
Description
Technical field
The utility model relates to a kind of recording and broadcasting system writing on the blackboard control device, for specialty recorded broadcast classroom, campus, belongs to teaching equipment.
Background technology
Recording and broadcasting system can while teacher gives lessons on the spot, automatic generation recording in classroom teaching video recording, intactly record the overall process of teachers' instruction, comprise the Multimedia Teaching Courseware etc. of the process that teacher lectures, process that writing on the blackboard is write and use, automatically edit generation according to the time sequencing of giving lessons to give lessons live video, can also carry out live simultaneously in the streaming media on the internet, make users as on-the-spot in classroom, can also reset in online program request after class.
Existing recording and broadcasting system has debug difficulties, the common fault that effect is undesirable, its writing on the blackboard control mode mainly contains two kinds: one is infrared acquisition, and camera lens is followed and rotated shooting with the pen of infrared facility or tie clip Mike, but mode easily affects by external light source; Another kind is Camera Positioning, judges whether this switching by graphical analysis, and because image is by the impact of light source factor, which False Rate is high, and trigger range is little.
Application publication number CN 103777643 A, in the Chinese patent of Shen Qing Publication day 2014.05.07, disclose camera to automatically track system and the tracking of a kind of image based location, this comprises object locating system, automatic tracking system, recorded broadcast host computer system etc.The system and method that this invention provides eliminates external interference, accurately can orient the concrete coordinate position of moving target, by control camera pan-tilt, achieve to moving target from motion tracking.This technical scheme mainly adopts image detecting technique, namely when image recognition software senses the movement of related objective thing, thus conduction and control video camera or camera and press moving direction indexing, accomplish the effect of following the tracks of, but this technical scheme is easily by the interference of external light source, causes and misread, judge by accident, in addition, dollying easily causes image blurring, and machine loss is larger, and cost is higher.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of reasonable in design, not by the impact of light source, does not also produce the circumscribed recording and broadcasting system writing on the blackboard control device of erroneous judgement and trigger range by image range restriction.
The technical scheme in the invention for solving the above technical problem is: this recording and broadcasting system writing on the blackboard control device comprises apparatus for writing and writing on the blackboard video camera, it is characterized in that: the Vibration induction element of the vibrations produced when also comprising for responding to and writing, for receiving the vibration signal of Vibration induction element and vibration signal being converted to the shock sensor of level signal, for receiving level signal that shock sensor produces and level signal being converted to the signal converter of digital signal, the digital signal produced for collection signal converter according to instructor in broadcasting's machine of Digital Signals writing on the blackboard video camera, described Vibration induction element is arranged on the writing instrument, described Vibration induction element is connected with vibrations converter, described vibrations converter is connected with signal converter, described signal converter is connected with instructor in broadcasting's machine, described instructor in broadcasting's machine is connected with writing on the blackboard video camera.Vibrations can be produced when teacher writes on the writing instrument, Vibration induction element on apparatus for writing can be empathized thereupon and produce vibration signal, vibration signal is received by shock sensor, thus make shock sensor generation current, when stopping writing, the circuit of shock sensor can disconnect automatically, by the disconnection of circuit, closed generation one group of level signal, level signal transfers to signal converter, level signal converted to by signal converter the digital signal that one group of instructor in broadcasting's machine can recognize, again digital signal is defined in instructor in broadcasting's rule of instructor in broadcasting's machine, instructor in broadcasting's machine can complete the switching of writing on the blackboard video camera and other picture according to the digital signal received, whole process reaction is highly sensitive, and not by the interference of any external light source, that is, no matter director system main broadcaster interface is in any scape position, as long as receive the signal that the Vibration induction element on apparatus for writing is sent, control writing on the blackboard video camera is automatically switched into writing on the blackboard scape position by instructor in broadcasting's machine, completely not by the interference of any external light source, also erroneous judgement is not produced by image range restriction.
Shock sensor described in the utility model comprises power supply, for receiving the sensor of the vibration signal of Vibration induction element and receiving vibration signal time the switch that can automatically close, described power supply, sensor and switch are connected successively and form loop.After sensor receives the vibration signal of Vibration induction element, switch closes automatically, thus makes whole circuit generation current, and when stopping writing, switch disconnects automatically, and whole circuit disconnects thereupon, can produce one group of level signal by the closed and disconnected of circuit.
Power supply described in the utility model is provided with power lead, described power lead is connected with transformer and power interface.Power interface is used for being connected with external power source, thus powers for shock sensor.
Apparatus for writing described in the utility model is blackboard.
Writing on the blackboard video camera described in the utility model has one at least.
The utility model compared with prior art, have the following advantages and effect: structure is simple, reasonable in design, vibrations can be produced when teacher writes on the writing instrument, Vibration induction element on apparatus for writing can be empathized thereupon and produce vibration signal, vibration signal is received by shock sensor, thus make shock sensor generation current, when stopping writing, the circuit of shock sensor can disconnect automatically, by the disconnection of circuit, closed generation one group of level signal, level signal transfers to signal converter, level signal converted to by signal converter the digital signal that one group of instructor in broadcasting's machine can recognize, again digital signal is defined in instructor in broadcasting's rule of instructor in broadcasting's machine, instructor in broadcasting's machine can complete the switching of writing on the blackboard video camera and other picture according to the digital signal received, whole process reaction is highly sensitive, and not by the interference of any external light source, that is, no matter director system main broadcaster interface is in any scape position, as long as receive the signal that the Vibration induction element on apparatus for writing is sent, control writing on the blackboard video camera is automatically switched into writing on the blackboard scape position by instructor in broadcasting's machine, completely not by the interference of any external light source, also erroneous judgement is not produced by image range restriction.
Accompanying drawing explanation
Fig. 1 is the structural representation of recording and broadcasting system writing on the blackboard control device in the utility model embodiment.
Fig. 2 is the structural representation of Vibration induction element, shock sensor, signal converter and casing.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
Embodiment.
See Fig. 1 to Fig. 2, the recording and broadcasting system writing on the blackboard control device in the present embodiment comprises apparatus for writing 1, writing on the blackboard video camera 2, Vibration induction element 3, shock sensor 4, signal converter 5, instructor in broadcasting's machine 6 and casing 7.
The vibrations produced when Vibration induction element 3 in the present embodiment is write for responding to also are empathized, thus produce vibration signal, and Vibration induction element 3 is arranged on apparatus for writing 1, and can produce vibration signal with the action of writing of teacher; Shock sensor 4 is for receiving the vibration signal of Vibration induction element 3 and vibration signal being converted to level signal, and shock sensor 4 is connected with Vibration induction element 3; Signal converter 5 for receive shock sensor 4 produce level signal and level signal is converted to digital signal, digital signal can identify by instructor in broadcasting's machine 6, signal converter 5 is connected with shock sensor 4; The digital signal that instructor in broadcasting's machine 6 produces for collection signal converter 5 according to Digital Signals writing on the blackboard video camera 2, instructor in broadcasting's machine 6 is connected with signal converter 5; Writing on the blackboard video camera 2 is connected with instructor in broadcasting's machine 6, and writing on the blackboard video camera 2, and can image switching accordingly for taking the writing on the blackboard of teacher.
Vibrations can be produced when teacher writes on apparatus for writing 1, Vibration induction element 3 on apparatus for writing 1 can be empathized thereupon and produce vibration signal, vibration signal is received by shock sensor 4, thus make shock sensor 4 generation current, when stopping writing, the circuit of shock sensor 4 can disconnect automatically, by the disconnection of circuit, close and produce one group of level signal, level signal transfers to signal converter 5, level signal converted to by signal converter 5 digital signal that one group of instructor in broadcasting's machine 6 can recognize, again digital signal is defined in instructor in broadcasting's rule of instructor in broadcasting's machine 6, instructor in broadcasting's machine 6 can complete the switching of writing on the blackboard video camera 2 and other picture according to the digital signal received, the intelligent-tracking to teacher position can be realized, and according to teaching process automatic switchover video, whole process reaction is highly sensitive, and not by the interference of any external light source.That is, no matter director system main broadcaster interface is in any scape position, as long as receive the signal that the Vibration induction element 3 on apparatus for writing 1 is sent, control writing on the blackboard video camera 2 is automatically switched into writing on the blackboard scape position by instructor in broadcasting's machine 6, completely not by the interference of any external light source, also do not produce erroneous judgement by image range restriction.
Shock sensor 4 in the present embodiment comprises power supply 41, for receiving the sensor 42 of the vibration signal of Vibration induction element 3 and receiving vibration signal time the switch 43 that can automatically close, power supply 41, sensor 42 are connected successively with switch 43 and form loop, after sensor 42 receives the vibration signal of Vibration induction element 3, switch 43 can close automatically, thus make whole circuit generation current, when stopping writing, switch 43 disconnects automatically, whole circuit disconnects thereupon, can produce one group of level signal by the closed and disconnected of circuit.Switch 43 in the present embodiment is prior art, thus repeats no more herein.
Power supply 41 in the present embodiment is provided with power lead 411, power lead 411 is connected with transformer 412 and power interface 413, power interface 413 for being connected with external power source, thus is powered for shock sensor 4, transformer 412, for changing voltage, specifically transfers 220V voltage to 12V.
Signal converter 5 in the present embodiment is also provided with No. two power supplys 51, No. two power supplys 51 are provided with power lead 511, power lead 511 is connected with transformer 512 and power interface 513, power interface 513 is for being connected with external power source, thus power for signal converter 5, transformer 512, for changing voltage, specifically transfers 220V voltage to 12V.
Signal converter 5 in the present embodiment is provided with 485 serial ports 52, signal converter 5 is connected with instructor in broadcasting's machine 6 by 485 serial ports 52.
Shock sensor 4 in the present embodiment and signal converter 5 are all arranged in casing 7, and casing 7 can be fixed on apparatus for writing 1 on one side, it is outside that Vibration induction element 3 is located at casing 7, and 485 serial ports 52 are drawn from the signal converter 5 in casing, and are used for directly being connected with instructor in broadcasting's machine 6.
Apparatus for writing 1 in the present embodiment is blackboard, and Vibration induction element 3 is contained on blackboard.
Writing on the blackboard video camera 2 in the present embodiment has one at least.
In addition, it should be noted that, the specific embodiment described in this instructions, the shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this instructions is only to the utility model structure and the explanation of accompanying drawing example.The equivalence change that structure, feature and principle described in all foundation the utility model inventional idea are done or simple change, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (5)
1. a recording and broadcasting system writing on the blackboard control device, comprise apparatus for writing and writing on the blackboard video camera, it is characterized in that: the Vibration induction element of the vibrations produced when also comprising for responding to and writing, for receiving the vibration signal of Vibration induction element and vibration signal being converted to the shock sensor of level signal, for receiving level signal that shock sensor produces and level signal being converted to the signal converter of digital signal, the digital signal produced for collection signal converter according to instructor in broadcasting's machine of Digital Signals writing on the blackboard video camera, described Vibration induction element is arranged on the writing instrument, described Vibration induction element is connected with vibrations converter, described vibrations converter is connected with signal converter, described signal converter is connected with instructor in broadcasting's machine, described instructor in broadcasting's machine is connected with writing on the blackboard video camera.
2. a kind of recording and broadcasting system writing on the blackboard control device according to claim 1, it is characterized in that: described shock sensor comprises power supply, for receiving the sensor of the vibration signal of Vibration induction element and receiving vibration signal time the switch that can automatically close, described power supply, sensor and switch are connected successively and form loop.
3. a kind of recording and broadcasting system writing on the blackboard control device according to claim 2, is characterized in that: described power supply is provided with power lead, described power lead is connected with transformer and power interface.
4. a kind of recording and broadcasting system writing on the blackboard control device according to claim 1, is characterized in that: described apparatus for writing is blackboard.
5. a kind of recording and broadcasting system writing on the blackboard control device according to claim 1, is characterized in that: described writing on the blackboard video camera has one at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420409786.8U CN204029178U (en) | 2014-07-24 | 2014-07-24 | A kind of recording and broadcasting system writing on the blackboard control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420409786.8U CN204029178U (en) | 2014-07-24 | 2014-07-24 | A kind of recording and broadcasting system writing on the blackboard control device |
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| CN204029178U true CN204029178U (en) | 2014-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113538988A (en) * | 2021-06-04 | 2021-10-22 | 深圳市中达聚能技术有限公司 | Intelligent classroom and teaching control method for same |
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2014
- 2014-07-24 CN CN201420409786.8U patent/CN204029178U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113538988A (en) * | 2021-06-04 | 2021-10-22 | 深圳市中达聚能技术有限公司 | Intelligent classroom and teaching control method for same |
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