CN208581304U - Wireless portable recording and broadcasting system - Google Patents
Wireless portable recording and broadcasting system Download PDFInfo
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- CN208581304U CN208581304U CN201821224915.0U CN201821224915U CN208581304U CN 208581304 U CN208581304 U CN 208581304U CN 201821224915 U CN201821224915 U CN 201821224915U CN 208581304 U CN208581304 U CN 208581304U
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Abstract
The utility model discloses a kind of wireless portable recording and broadcasting systems, including multimedia collection device, collected equipment, recording player and projector, collected equipment and recording player are connect with multimedia collection device, projector is connect with recording player, and multimedia collection device includes controller, data acquisition unit, coding encapsulation unit, wireless communication module, HDMI interface, signal emission control chip, physical control switch, memory and flash memory；The data acquisition unit includes signal input part, DC power supply, frequency converter, the first triode, light emitting diode, first capacitor, first resistor, the first operational amplifier, the second capacitor, 3rd resistor, photosensitive tube, second resistance, third capacitor, second operational amplifier, the 4th potentiometer, the 5th resistance and signal output end.The utility model circuit structure is relatively simple, cost is relatively low, maintain easily, the safety and reliability of circuit is preferable.
Description
Technical field
The utility model relates to recording and broadcasting system field, in particular to a kind of wireless portable recording and broadcasting system.
Background technique
Recording and broadcasting system can will give lessons or the image of speaker (Video), sound (Audio) and handout of attending class (VGA), with hard
Part DeviceMode instant recording and is broadcast live at the network format of standard by network and server sync.Spectators are with IE and Media
Player can watch live audio-visual and graph-text content.When speech terminates content imprinting be saved or be deposited at CD immediately
In server, on-demand program request (VOD) service is provided.Traditional recording and broadcasting system can capture multimedia by software, then to more matchmakers
Body carries out coding encapsulation and using cable transmission to recording player.The internal circuit knot of multimedia collection device in traditional recording and broadcasting system
The component that structure uses is more, and wiring is complicated, is not easy to safeguard, and hardware cost is higher.In addition, more in traditional recording and broadcasting system
The internal circuit configuration of acquisition of media device lacks corresponding circuit protection function, such as: the function of interference signal is prevented, electricity is caused
The safety and reliability on road is poor.
Utility model content
The technical problem to be solved by the present invention is in view of the above drawbacks of the prior art, provide a kind of circuit knot
Structure is relatively simple, cost is relatively low, maintains easily, the preferable wireless portable recording and broadcasting system of the safety and reliability of circuit.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of wireless portable recording and broadcasting system is constructed,
Including multimedia collection device, collected equipment, recording player and projector, the collected equipment and recording player with more matchmakers
The connection of body collector, the projector are connect with the recording player, and the multimedia collection device includes controller, data acquisition list
Member, coding encapsulation unit, wireless communication module, HDMI interface, signal emission control chip, physical control switch, memory and sudden strain of a muscle
It deposits, the data acquisition unit, coding encapsulation unit, wireless communication module, HDMI interface, signal emission control chip and memory
Connect with the controller, the flash memory and Memory linkage, physical control switch respectively with the signal emission control
Chip is connected with flash memory；
The data acquisition unit include signal input part, DC power supply, frequency converter, the first triode, light emitting diode,
First capacitor, first resistor, the first operational amplifier, the second capacitor, 3rd resistor, photosensitive tube, second resistance, third capacitor,
Second operational amplifier, the 4th potentiometer, the 5th resistance and signal output end, the input terminal of the frequency converter and the signal are defeated
Enter end connection, the DC power supply is connect with the emitter at the cathode power supply end of the frequency converter and the first triode respectively, institute
The output end for stating frequency converter is connect with the base stage of first triode, the ground terminal ground connection of the frequency converter, and the described 1st
The collector of pole pipe is connect with the anode of the light emitting diode, the minus earth of the light emitting diode, first operation
The inverting input terminal of amplifier is connect with one end of one end of the first resistor and first capacitor respectively, the first resistor
The other end and the other end of first capacitor are grounded, the non-inverting input terminal of first operational amplifier and second capacitor
One end connection, the other end of second capacitor is connect with one end of the anode of the photosensitive tube and 3rd resistor respectively, described
The cathode of photosensitive tube is grounded by the second resistance, and the light emitting diode is connect by optical fiber with the photosensitive tube,
The output end of first operational amplifier is put with one end of the 3rd resistor, one end of third capacitor and the second operation respectively
The sliding end of the non-inverting input terminal connection of big device, the inverting input terminal of the second operational amplifier and the 4th potentiometer connects
It connects, a fixing end of the 4th potentiometer is connect with the DC power supply, another fixing end of the 4th potentiometer
Ground connection, the output end of the second operational amplifier respectively with the other end of the third capacitor, one end of the 5th resistance and letter
The connection of number output end, the other end of the 5th resistance are connect with the DC power supply, and the capacitance of the third capacitor is
390pF。
In wireless portable recording and broadcasting system described in the utility model, the data acquisition unit further includes the one or two pole
Pipe, the anode of the first diode are connect with the output end of the second operational amplifier, the cathode of the first diode
It is connect with one end of the third capacitor, the model S-352T of the first diode.
In wireless portable recording and broadcasting system described in the utility model, the data acquisition unit further includes the 6th resistance,
One end of 6th resistance is connect with the DC power supply, the other end of the 6th resistance and the hair of first triode
Emitter-base bandgap grading connection, the resistance value of the 6th resistance are 36k Ω.
In wireless portable recording and broadcasting system described in the utility model, the data acquisition unit further includes the 7th resistance,
One end of 7th resistance is connect with the other end of the third capacitor, and the other end and the signal of the 7th resistance are defeated
Outlet connection, the resistance value of the 7th resistance are 47k Ω.
In wireless portable recording and broadcasting system described in the utility model, first triode is PNP type triode.
In wireless portable recording and broadcasting system described in the utility model, the wireless communication module is bluetooth module, WIFI
Module, gsm module, GPRS module, CDMA module, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module
Or LoRa module.
The wireless portable recording and broadcasting system for implementing the utility model has the advantages that due to being equipped with multimedia collection
Device, collected equipment, recording player and projector, multimedia collection device include controller, data acquisition unit, coding encapsulation list
Member, wireless communication module, HDMI interface, signal emission control chip, physical control switch, memory and flash memory；Data acquisition is single
Member includes signal input part, DC power supply, frequency converter, the first triode, light emitting diode, first capacitor, first resistor, first
Operational amplifier, the second capacitor, 3rd resistor, photosensitive tube, second resistance, third capacitor, second operational amplifier, the 4th current potential
Device, the 5th resistance and signal output end, the data acquisition unit is relative in the multimedia collection device in traditional recording and broadcasting system
Portion's circuit, the component used is less, due to saving some components, hardware cost can be reduced in this way, in addition, third
Capacitor is used to preventing interference between the first operational amplifier and second operational amplifier, thus circuit structure it is relatively simple, at
This is lower, maintain easily, the safety and reliability of circuit is preferable.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram in the utility model wireless portable recording and broadcasting system one embodiment；
Fig. 2 is the structural block diagram of multimedia collection device in the embodiment；
Fig. 3 is the circuit diagram of data acquisition unit in the embodiment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In the utility model wireless portable recording and broadcasting system embodiment, the structural schematic diagram of the wireless portable recording and broadcasting system is such as
Shown in Fig. 1.In Fig. 1, which includes multimedia collection device 1, collected equipment 2, recording player 3 and projector
4, wherein collected equipment 2 and recording player 3 are connect with multimedia collection device 1, and projector 4 is connect with recording player 3.
Fig. 2 is the structural block diagram of multimedia collection device in the present embodiment, and in Fig. 2, which includes controller
11, data acquisition unit 12, coding encapsulation unit 13, wireless communication module 14, HDMI interface 15, signal emission control chip
16, physical control switch 17, memory 18 and flash memory 19, wherein data acquisition unit 12, coding encapsulation unit 13, wireless communication
Module 14, HDMI interface 15, signal emission control chip 16 and memory are connect with controller 11, and flash memory 18 and memory 19 connect
It connects, physical control switch 17 is connect with signal emission control chip 16 and flash memory 19 respectively.Wherein, coding encapsulation unit 13 is used for
The multi-medium data obtained from data acquisition unit 12 is handled, data are encoded according to specific coding format, encapsulation is compiled
Multi-medium data after code, makes it be converted to the transmission format of standard, and be temporarily stored into memory 18.
In the present embodiment, HDMI interface 15 is used to receive the multi-medium data of collected equipment 2 (PC machine), if by more matchmakers
The HDMI interface 15 that body collector 1 is linked into collected equipment 2 can start to work normally.Wireless communication module 14 is for will be from
Encoding encapsulation unit 13, treated that multi-medium data is wirelessly sent to recording player 3.Data acquisition unit 12 is used for
Preparation processing will be kept in into memory 18 in the form of source data from the multi-medium data that HDMI interface 15 receives.Controller 11
For operation, the information of memory 18 is read, is communicated with data acquisition unit 12, coding encapsulation unit 13, wireless communication module 14
And it controls it and starts and stops operation.Coding encapsulation unit 13 is for handling the multi-medium data obtained from data acquisition unit 12
And it is encoded with H264 format or other coded formats, the multi-medium data after encapsulation coding is then become into standard
Transmission format, and will be temporarily stored into memory 18.
In the present embodiment, the wireless communication module 14 can be bluetooth module, WIFI module, gsm module, GPRS module,
CDMA module, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module or LoRa module etc..Pass through setting
Various wireless communication mode can not only increase the flexibility of communication, moreover it is possible to meet different user and different occasions
Demand.When in particular by LoRa module, farther out, and communication performance is relatively stable for communication distance, is suitable for communication matter
Measure more demanding occasion.
In the present embodiment, if operating to physical control switch 17, the information of physical control switch 17 will be written to
In flash memory 19, and it is notified that controller 11 and signal emission control chip 16 do corresponding processing.Signal emission control chip 16
The number of multimedia collection device 1, the switch state of physical control switch 17 and current each chip can be obtained from flash memory 19
Working condition；If each chip works normally, and physical control switch 17 is in the state opened, the signal emission control chip 16
Send normal-state for opening；If each chip works normally, and physical control switch 17 is in the state of normal-pass, the signal
Emission control chip 16 sends the state closed；If each chip non-normal working, and physical control switch 17 is in the state opened,
The signal emission control chip 16 sends the state that exception-is opened；If each chip works normally, and physical control switch 17 is in
The state of exception-pass can be transmitted in the state of pass, the signal emission control chip 16.16 normal operation of signal emission control chip
When, it can directly be communicated with recording player 3, transmit signals to recording player 3.
Fig. 3 is the circuit diagram of data acquisition unit in the present embodiment, and in Fig. 3, which includes letter
Number input terminal Vin, DC power supply VCC, frequency converter VF, the first triode Q1, Light-emitting diode LED, first capacitor C1, the first electricity
Hinder R1, the first operational amplifier A1, the second capacitor C2,3rd resistor R3, photosensitive tube RG, second resistance R2, third capacitor C3, the
Two operational amplifier A2, the 4th potentiometer RP4, the 5th resistance R5 and signal output end Vo, the input terminal and signal of frequency converter VF
Input terminal Vin connection, DC power supply VCC connect with the emitter of the cathode power supply end of frequency converter VF and the first triode Q1 respectively
It connects, the output end of frequency converter VF is connect with the base stage of the first triode Q1, the ground terminal ground connection of frequency converter VF, the first triode Q1
Collector and Light-emitting diode LED anode connect, the minus earth of Light-emitting diode LED, the first operational amplifier A1's
Inverting input terminal is connect with one end of one end of first resistor R1 and first capacitor C1 respectively, the other end of first resistor R1 and
The other end of one capacitor C1 is grounded, and the non-inverting input terminal of the first operational amplifier A1 is connect with one end of the second capacitor C2, the
The other end of two capacitor C2 is connect with one end of the anode of photosensitive tube RG and 3rd resistor R3 respectively, and the cathode of photosensitive tube RG passes through
Second resistance R2 ground connection, Light-emitting diode LED are connect by optical fiber GD with photosensitive tube RG, and the first operational amplifier A1's is defeated
Outlet connects with the non-inverting input terminal of one end of 3rd resistor R3, one end of third capacitor C3 and second operational amplifier A2 respectively
It connecing, the inverting input terminal of second operational amplifier A2 is connect with the sliding end of the 4th potentiometer RP4, and the one of the 4th potentiometer RP4
A fixing end is connect with DC power supply VCC, another fixing end ground connection of the 4th potentiometer RP4, second operational amplifier A2's
Output end is connect with the other end of third capacitor C3, one end of the 5th resistance R5 and signal output end Vo respectively, the 5th resistance R5
The other end connect with DC power supply VCC.
Internal circuit of the data acquisition unit 12 relative to the multimedia collection device in traditional recording and broadcasting system, uses
Component is less, and circuit structure is relatively simple, maintains easily, due to saving some components, can reduce in this way hardware at
This.In addition, third capacitor C3 is coupled capacitor, for preventing between the first operational amplifier A1 and second operational amplifier A2
Interference, therefore the safety and reliability of circuit is preferable.It is noted that in the present embodiment, the capacitance of third capacitor C3
For 390pF, certainly, in practical applications, the capacitance of third capacitor C3 can adjust accordingly as the case may be, also
It is that the capacitance of third capacitor C3 can be increased accordingly or be reduced as the case may be.
When work, analog signal is converted into frequency signal by frequency converter VF, is sent by Light-emitting diode LED to photosensitive tube
RG, photosensitive tube RG drive the first operational amplifier A1, then carry out two-stage amplification through second operational amplifier A2, then export, adopt
The weak of signal can be reduced with optical fiber GD.
It is noted that the first triode Q1 is PNP type triode in the present embodiment, certainly, in practical applications,
First triode Q1 may be NPN type triode, but at this moment the structure of circuit also will accordingly change.
In the present embodiment, which further includes first diode D1, the anode of first diode D1 and
The output end of two operational amplifier A2 connects, and the cathode of first diode D1 is connect with one end of third capacitor C3.One or two pole
Pipe D1 is Current Limiting Diodes, for carrying out current-limiting protection, to further enhance the safety and reliability of circuit.It is worth mentioning
It is that in the present embodiment, the model S-352T of first diode D1, certainly, in practical applications, first diode D1 can also be with
There is the diode of similar functions using other models.
In the present embodiment, which further includes the 6th resistance R6, one end of the 6th resistance R6 and direct current
Source VCC connection, the other end of the 6th resistance R6 are connect with the emitter of the first triode Q1.6th resistance R6 is current-limiting resistance,
Current-limiting protection is carried out for the emitter current to the first triode Q1, further to enhance the safety of circuit and reliable
Property.It is noted that the resistance value of the 6th resistance R6 is 36k Ω in the present embodiment, certainly, in practical applications, the 6th resistance
The resistance value of R6 can adjust accordingly as the case may be, that is, the 6th resistance R6 resistance value can as the case may be into
Row increases accordingly or reduces.
In the present embodiment, which further includes the 7th resistance R7, one end of the 7th resistance R7 and third electricity
Hold the other end connection of C3, the other end of the 7th resistance R7 is connect with signal output end Vo.7th resistance R7 is current-limiting resistance, is used
In carrying out current-limiting protection, to further enhance current-limiting protection effect.It is noted that in the present embodiment, the 7th resistance R7's
Resistance value is 47k Ω, and certainly, in practical applications, the resistance value of the 7th resistance R7 can adjust accordingly as the case may be,
That is the resistance value of the 7th resistance R7 can be increased accordingly or be reduced as the case may be.
In short, the data acquisition unit 12 is relative to the multimedia collection device in traditional recording and broadcasting system in the present embodiment
Internal circuit, circuit structure is relatively simple, maintains easily, and the component used is less, due to saving some components, this
Sample can reduce hardware cost.In addition, be equipped with coupled capacitor in the data acquisition unit 12, therefore the safety of circuit and reliable
Property is preferable.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. a kind of wireless portable recording and broadcasting system, which is characterized in that including multimedia collection device, collected equipment, recording player and throwing
Shadow instrument, the collected equipment and recording player are connect with the multimedia collection device, and the projector and the recording player connect
It connects, the multimedia collection device includes that controller, data acquisition unit, coding encapsulation unit, wireless communication module, HDMI connect
Mouth, signal emission control chip, physical control switch, memory and flash memory, the data acquisition unit, coding encapsulation unit, nothing
Line communication module, HDMI interface, signal emission control chip and memory are connect with the controller, and the flash memory and memory connect
It connects, the physical control switch is connect with the signal emission control chip and flash memory respectively；
The data acquisition unit includes signal input part, DC power supply, frequency converter, the first triode, light emitting diode, first
Capacitor, first resistor, the first operational amplifier, the second capacitor, 3rd resistor, photosensitive tube, second resistance, third capacitor, second
Operational amplifier, the 4th potentiometer, the 5th resistance and signal output end, the input terminal of the frequency converter and the signal input part
Connection, the DC power supply are connect with the emitter at the cathode power supply end of the frequency converter and the first triode respectively, the change
The output end of frequency device is connect with the base stage of first triode, the ground terminal ground connection of the frequency converter, first triode
Collector connect with the anode of the light emitting diode, the minus earth of the light emitting diode, first operation amplifier
The inverting input terminal of device is connect with one end of one end of the first resistor and first capacitor respectively, the first resistor it is another
The other end of end and first capacitor is grounded, one end of the non-inverting input terminal of first operational amplifier and second capacitor
Connection, the other end of second capacitor is connect with one end of the anode of the photosensitive tube and 3rd resistor respectively, described photosensitive
The cathode of pipe is grounded by the second resistance, and the light emitting diode is connect by optical fiber with the photosensitive tube, described
The output end of first operational amplifier respectively with one end of the 3rd resistor, one end of third capacitor and second operational amplifier
Non-inverting input terminal connection, the inverting input terminal of the second operational amplifier connect with the sliding end of the 4th potentiometer,
One fixing end of the 4th potentiometer is connect with the DC power supply, and another of the 4th potentiometer fixes termination
Ground, the output end of the second operational amplifier respectively with the other end of the third capacitor, one end of the 5th resistance and signal
Output end connection, the other end of the 5th resistance are connect with the DC power supply, and the capacitance of the third capacitor is
390pF。
2. wireless portable recording and broadcasting system according to claim 1, which is characterized in that the data acquisition unit further includes
One diode, the anode of the first diode are connect with the output end of the second operational amplifier, the first diode
Cathode connect with one end of the third capacitor, the model S-352T of the first diode.
3. wireless portable recording and broadcasting system according to claim 2, which is characterized in that the data acquisition unit further includes
One end of six resistance, the 6th resistance is connect with the DC power supply, the other end and the described 1st of the 6th resistance
The emitter of pole pipe connects, and the resistance value of the 6th resistance is 36k Ω.
4. wireless portable recording and broadcasting system according to claim 3, which is characterized in that the data acquisition unit further includes
One end of seven resistance, the 7th resistance is connect with the other end of the third capacitor, the other end of the 7th resistance and institute
Signal output end connection is stated, the resistance value of the 7th resistance is 47k Ω.
5. wireless portable recording and broadcasting system according to any one of claims 1 to 4, which is characterized in that the one or three pole
Pipe is PNP type triode.
6. wireless portable recording and broadcasting system according to any one of claims 1 to 4, which is characterized in that the wireless communication
Module is bluetooth module, WIFI module, gsm module, GPRS module, CDMA module, CDMA2000 module, WCDMA module, TD-
SCDMA module, Zigbee module or LoRa module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821224915.0U CN208581304U (en) | 2018-07-31 | 2018-07-31 | Wireless portable recording and broadcasting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821224915.0U CN208581304U (en) | 2018-07-31 | 2018-07-31 | Wireless portable recording and broadcasting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208581304U true CN208581304U (en) | 2019-03-05 |
Family
ID=65511641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821224915.0U Active CN208581304U (en) | 2018-07-31 | 2018-07-31 | Wireless portable recording and broadcasting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208581304U (en) |
-
2018
- 2018-07-31 CN CN201821224915.0U patent/CN208581304U/en active Active
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