CN109451218A - Video camera - Google Patents
Video camera Download PDFInfo
- Publication number
- CN109451218A CN109451218A CN201811385574.XA CN201811385574A CN109451218A CN 109451218 A CN109451218 A CN 109451218A CN 201811385574 A CN201811385574 A CN 201811385574A CN 109451218 A CN109451218 A CN 109451218A
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- CN
- China
- Prior art keywords
- module
- triode
- connect
- capacitor
- diode
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/51—Housings
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/142—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Power Sources (AREA)
Abstract
The invention discloses a kind of video cameras, microprocessor including shell and setting inside the shell, touch screen, USB interface, switch control module, temperature sensor, power module, call module, modem, audio video processor and wireless communication module, touch screen, USB interface, switch control module, temperature sensor and power module are connect with microprocessor, audio video processor receives the speech signal of wireless communication module transmitting, speech signal is sent to modem to be modulated or demodulate, signal after ovennodulation or demodulation is sent to microprocessor by call module；Power module includes voltage input end, transformer, bridge rectifier, first capacitor, the first triode, first resistor, 3rd resistor, the second triode, first diode, the second potentiometer, the second capacitor and voltage output end.Circuit structure of the present invention is relatively simple, cost is relatively low, maintain easily, the safety and reliability of circuit is higher.
Description
Technical field
The present invention relates to photographic goods field, in particular to a kind of video camera.
Background technique
Camera type is various, and the basic principle of work is all that optical image signal is changed into electric signal mostly, with
Convenient for storing or transmitting.When user shoots an object, the light reflected on this object is collected by camera lens, keeps it poly-
Coke picture pick-up device light-receiving surface, as pick-up tube target surface on, then optical signal is changed by picture pick-up device by electric signal
Obtain graphics image signal.The applicable scene of existing video camera is relatively broad.However, what the power pack of traditional cameras used
Component is more, and circuit structure is complicated, and hardware cost is higher, it has not been convenient to safeguard.In addition, due to the power pack of traditional cameras
Lack corresponding circuit protection function, such as: lack current-limiting protection function, causes the safety and reliability of circuit poor.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, provide a kind of circuit structure compared with
For simple, cost is relatively low, maintains easily, the higher video camera of the safety and reliability of circuit.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of video camera, shell and setting exist
Microprocessor, touch screen, USB interface, switch control module, temperature sensor, power module, call mould in the shell
Block, modem, audio video processor and wireless communication module, the touch screen, USB interface, switch control module, temperature
Sensor and power module are connect with the microprocessor, and the audio video processor receives the wireless communication module transmitting
Speech signal, the speech signal is sent to the modem and is modulated or demodulates, after ovennodulation or demodulation
Signal the microprocessor is sent to by the call module；
The power module includes voltage input end, transformer, bridge rectifier, first capacitor, the first triode, first
Resistance, 3rd resistor, the second triode, first diode, the second potentiometer, the second capacitor and voltage output end, the transformation
One end of the primary coil of device is connect with one end of the voltage input end, the other end of the primary coil of the transformer and institute
State the other end connection of voltage input end, the second end company of one end of the secondary coil of the transformer and the bridge rectifier
It connects, the other end of the secondary coil of the transformer is connect with the 4th end of the bridge rectifier, the bridge rectifier
First end is connect with the collector of first triode, one end of first resistor and the cathode of first capacitor respectively, and described
The base stage of one triode is connect with one end of the other end of the first resistor and 3rd resistor respectively, the bridge rectifier
Third end respectively with the first capacitor anode and 3rd resistor other end connect and ground, the hair of first triode
Emitter-base bandgap grading respectively with the collector of second triode, a fixing end of the second potentiometer, the second capacitor cathode and voltage
The cathode of output end connects, and the emitter of second triode is connect with the cathode of the first diode, and the described 2nd 3
The base stage of pole pipe is connect with the sliding end of second potentiometer, the anode of the first diode respectively with second current potential
The positive connect and ground of another fixing end of device, the anode of the second capacitor and voltage output end, the resistance of the 3rd resistor
Value is 35k Ω.
In video camera of the present invention, the power module further includes third capacitor, one end of the third capacitor
It is connect with the emitter of first triode, the collector of the other end of the third capacitor and second triode connects
It connects, the capacitance of the third capacitor is 35k Ω.
In video camera of the present invention, the power module further includes the second diode, second diode
Anode is connect with the collector of first triode, and the cathode of second diode and one end of the first resistor connect
It connects, the model E-103 of second diode.
In video camera of the present invention, the power module further includes the 4th resistance, one end of the 4th resistance
It being connect with the emitter of first triode, the other end of the 4th resistance is connect with the cathode of the voltage output end,
The resistance value of 4th resistance is 42k Ω.
In video camera of the present invention, first triode and the second triode are PNP type triode.
In video camera of the present invention, the wireless communication module be bluetooth module, WIFI module, gsm module,
GPRS module, CDMA module, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module or LoRa module.
Implement video camera of the invention, have the advantages that due to be equipped with microprocessor, touch screen, USB interface,
Switch control module, temperature sensor, power module, call module, modem, audio video processor and radio communication mold
Block；Power module includes voltage input end, transformer, bridge rectifier, first capacitor, the first triode, first resistor, third
Resistance, the second triode, first diode, the second potentiometer, the second capacitor and voltage output end, the power module are taken the photograph with tradition
The power pack of camera is compared, and the component used is less, due to saving some components, can reduce in this way hardware at
This, in addition, 3rd resistor is used to carry out current-limiting protection, therefore circuit structure is relatively simple, cost is relatively low, maintains easily, circuit
Safety and reliability it is higher.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram in video camera one embodiment of the present invention；
Fig. 2 is the circuit diagram of power module in the embodiment.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In video camera embodiment of the present invention, the structural schematic diagram of the video camera is as shown in Figure 1.In Fig. 1, the video camera packet
Include shell (not shown) and setting microprocessor 1 inside the shell, touch screen 2, USB interface 3, switch control module 4,
Temperature sensor 5, power module 6, call module 7, modem 8, audio video processor 9 and wireless communication module 10, touching
Control screen 2, USB interface 3, switch control module 4, temperature sensor 5 and power module 6 are connect with microprocessor 1, at audio-video
It manages device 9 and receives the speech signal that wireless communication module 10 transmits, speech signal is sent to modem 8 and is modulated or solves
It adjusts, the signal after ovennodulation or demodulation is sent to microprocessor 1 by call module 7.
Wireless communication module 10 is analyzed and processed for the speech signal of user to be sent to audio video processor 9, will
Treated that speech signal is successively sent to modem 8 and call module 7 for analysis, microprocessor 1 is sent into later, by micro-
It manages device 1 and exports speech signal, realize the video call with external equipment.
Temperature of the temperature sensor 5 for each device local environment in real-time monitoring shell, and in time pass temperature signal
Pass microprocessor 1.
In the present embodiment, wireless communication module 10 is bluetooth module, WIFI module, gsm module, GPRS module, CDMA mould
Block, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module or LoRa module etc..By the way that a variety of nothings are arranged
Line communication mode can not only increase the flexibility of communication, moreover it is possible to meet the needs of different user and different occasions.
When in particular by LoRa module, farther out, and communication performance is relatively stable for communication distance, be suitable for QoS requirement compared with
High occasion.
Fig. 2 is the circuit diagram of power module in the present embodiment, and in Fig. 2, which includes voltage input end
Vin, transformer T, bridge rectifier Z, first capacitor C1, the first triode Q1, first resistor R1,3rd resistor R3, the two or three
Pole pipe Q2, first diode D1, the second potentiometer RP2, the second capacitor C2 and voltage output end Vo, the primary coil of transformer T
One end connect with one end of voltage input end Vin, the other end of the primary coil of transformer T is another with voltage input end Vin's
One end connection, one end of the secondary coil of transformer T are connect with the second end of bridge rectifier Z, the secondary coil of transformer T
The other end is connect with the 4th end of bridge rectifier Z, the first end of the bridge rectifier Z current collection with the first triode Q1 respectively
Pole, first resistor R1 one end connected with the cathode of first capacitor C1, the base stage of the first triode Q1 respectively with first resistor R1
The other end connected with one end of 3rd resistor R3, the third end of bridge rectifier Z respectively with the anode of first capacitor C1 and the
The other end connect and ground of three resistance R3, the emitter of the first triode Q1 respectively with the collector of the second triode Q2,
A fixing end of two potentiometer RP2, the cathode of the second capacitor C2 are connected with the cathode of voltage output end Vo, the second triode Q2
Emitter connect with the cathode of first diode D1, the sliding end of the base stage of the second triode Q2 and the second potentiometer RP2 connect
It connects, the anode of the first diode D1 anode and voltage with another fixing end of the second potentiometer RP2, the second capacitor C2 respectively
The positive connect and ground of output end vo.
For the power module 6 compared with the power pack of traditional cameras, the component used is less, and circuit structure is more
Simply, it maintains easily, due to saving some components, hardware cost can be reduced in this way.In addition, 3rd resistor R3 is current limliting
Resistance, for carrying out current-limiting protection, therefore the safety and reliability of circuit is higher.It is noted that in the present embodiment, the
The resistance value of three resistance R3 is 35k Ω, and certainly, in practical applications, the resistance value of 3rd resistor R3 can carry out as the case may be
Corresponding adjustment, that is, the resistance value of 3rd resistor R3 can be increased accordingly or be reduced as the case may be.
The working principle of the power module 6 is as follows: bridge rectifier Z exports the direct current of an amplitude variation by transformation
Voltage, the voltage are added on the collector of the first triode Q1, the voltage in the case where guaranteeing the first triode Q1 conducting
As output voltage output valve DC voltage output end, while the second triode Q2 is by being connected to the second potentiometer of its base stage
The variation of RP2 controls the second triode Q2, and gives the Voltage Feedback on the emitter of second triode Q2 to the first triode
Q1, so that the fluctuation for offsetting output voltage achievees the purpose that pressure stabilizing.In addition, first capacitor C1 is polar capacitor, it is ensured that defeated
Voltage out is negative value, and negative output voltage will be more stable.
In the present embodiment, the first triode Q1 and the second triode Q2 are PNP type triode.Certainly, in practical application
In, the first triode Q1 and the second triode Q2 can also be NPN type triode, but at this moment the structure of circuit also will accordingly be sent out
Changing.
In the present embodiment, which further includes third capacitor C3, one end of third capacitor C3 and the first triode Q1
Emitter connection, the other end of third capacitor C3 connect with the collector of the second triode Q2.Third capacitor C3 is coupling electricity
Hold, for preventing the interference between the first triode Q1 and the second triode Q2, with further enhance circuit safety and can
By property.It is noted that the capacitance of third capacitor C3 is 35k Ω in the present embodiment, certainly, in practical applications, third
The capacitance of capacitor C3 can adjust accordingly as the case may be, that is, the capacitance of third capacitor C3 can be according to tool
Body situation is increased accordingly or is reduced.
In the present embodiment, which further includes the second diode D2, the anode of the second diode D2 and the one or three pole
The collector of pipe Q1 connects, and the cathode of the second diode D2 is connect with one end of first resistor R1.Second diode D2 is current limliting
Diode carries out current-limiting protection for the collector current to the first triode Q1, further to enhance the safety of circuit
And reliability.It is noted that in the present embodiment, the model E-103 of the second diode D2, certainly, in practical applications,
Second diode D2 can also have the diode of similar functions using other models.
In the present embodiment, which further includes the 4th resistance R4, one end of the 4th resistance R4 and the first triode Q1
Emitter connection, the other end of the 4th resistance R4 connect with the cathode of voltage output end Vo.4th resistance R4 is current-limiting resistance,
Current-limiting protection is carried out for the emitter current to the first triode Q1, to further enhance current limitation effect.It is noted that
In the present embodiment, the resistance value of the 4th resistance R4 is 42k Ω, and certainly, in practical applications, the resistance value of the 4th resistance R4 can basis
Concrete condition adjusts accordingly, that is, the resistance value of the 4th resistance R4 can be increased accordingly or be subtracted as the case may be
It is small.
In short, in the present embodiment, the power module 6 is compared with the power pack of traditional cameras, the component that uses
Less, circuit structure is relatively simple, maintains easily, and due to saving some components, can reduce hardware cost in this way.Separately
Outside, current-limiting resistance is equipped in the power module 6, therefore the safety and reliability of circuit is higher.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of video camera, which is characterized in that including shell and the microprocessor being arranged in the shell, touch screen, USB
Interface, switch control module, temperature sensor, power module, call module, modem, audio video processor and wireless
Communication module, the touch screen, USB interface, switch control module, temperature sensor and power module with the microprocessor
Connection, the audio video processor receive the speech signal of the wireless communication module transmitting, the speech signal are sent to
The modem is modulated or demodulates, and the signal after ovennodulation or demodulation is sent to described by the call module
Microprocessor；
The power module includes voltage input end, transformer, bridge rectifier, first capacitor, the first triode, the first electricity
Resistance, 3rd resistor, the second triode, first diode, the second potentiometer, the second capacitor and voltage output end, the transformer
One end of primary coil connect with one end of the voltage input end, the other end of the primary coil of the transformer with it is described
The other end of voltage input end connects, and the second end of one end of the secondary coil of the transformer and the bridge rectifier connects
It connects, the other end of the secondary coil of the transformer is connect with the 4th end of the bridge rectifier, the bridge rectifier
First end is connect with the collector of first triode, one end of first resistor and the cathode of first capacitor respectively, and described
The base stage of one triode is connect with one end of the other end of the first resistor and 3rd resistor respectively, the bridge rectifier
Third end respectively with the first capacitor anode and 3rd resistor other end connect and ground, the hair of first triode
Emitter-base bandgap grading respectively with the collector of second triode, a fixing end of the second potentiometer, the second capacitor cathode and voltage
The cathode of output end connects, and the emitter of second triode is connect with the cathode of the first diode, and the described 2nd 3
The base stage of pole pipe is connect with the sliding end of second potentiometer, the anode of the first diode respectively with second current potential
The positive connect and ground of another fixing end of device, the anode of the second capacitor and voltage output end, the resistance of the 3rd resistor
Value is 35k Ω.
2. video camera according to claim 1, which is characterized in that the power module further includes third capacitor, and described
One end of three capacitors is connect with the emitter of first triode, the other end of the third capacitor and second triode
Collector connection, the capacitance of the third capacitor is 35k Ω.
3. video camera according to claim 2, which is characterized in that the power module further includes the second diode, described
The anode of second diode is connect with the collector of first triode, the cathode of second diode and first electricity
One end of resistance connects, the model E-103 of second diode.
4. video camera according to claim 3, which is characterized in that the power module further includes the 4th resistance, and described
One end of four resistance is connect with the emitter of first triode, the other end and the voltage output end of the 4th resistance
Cathode connection, the resistance value of the 4th resistance is 42k Ω.
5. video camera according to any one of claims 1 to 4, which is characterized in that first triode and the two or three
Pole pipe is PNP type triode.
6. video camera 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 |
|---|---|---|---|
| CN201811385574.XA CN109451218A (en) | 2018-11-20 | 2018-11-20 | Video camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811385574.XA CN109451218A (en) | 2018-11-20 | 2018-11-20 | Video camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109451218A true CN109451218A (en) | 2019-03-08 |
Family
ID=65553354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811385574.XA Pending CN109451218A (en) | 2018-11-20 | 2018-11-20 | Video camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109451218A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203251234U (en) * | 2013-05-07 | 2013-10-23 | 高怡达科技(深圳)有限公司 | Switch power supply voltage stabilizing circuit |
| CN205212980U (en) * | 2015-12-23 | 2016-05-04 | 苏州中德宏泰电子科技股份有限公司 | Camera |
| CN206226309U (en) * | 2016-11-17 | 2017-06-06 | 王旋 | A kind of low-power power regulation device |
| US20180019603A1 (en) * | 2016-07-15 | 2018-01-18 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Surge Protection Circuit and Terminal |
-
2018
- 2018-11-20 CN CN201811385574.XA patent/CN109451218A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203251234U (en) * | 2013-05-07 | 2013-10-23 | 高怡达科技(深圳)有限公司 | Switch power supply voltage stabilizing circuit |
| CN205212980U (en) * | 2015-12-23 | 2016-05-04 | 苏州中德宏泰电子科技股份有限公司 | Camera |
| US20180019603A1 (en) * | 2016-07-15 | 2018-01-18 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Surge Protection Circuit and Terminal |
| CN206226309U (en) * | 2016-11-17 | 2017-06-06 | 王旋 | A kind of low-power power regulation device |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190308 |
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| RJ01 | Rejection of invention patent application after publication |