CN207835583U - The web camera of two wires connection - Google Patents
The web camera of two wires connection Download PDFInfo
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- CN207835583U CN207835583U CN201720801442.5U CN201720801442U CN207835583U CN 207835583 U CN207835583 U CN 207835583U CN 201720801442 U CN201720801442 U CN 201720801442U CN 207835583 U CN207835583 U CN 207835583U
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Abstract
The utility model proposes a kind of web cameras of two wires connection, including power supply and signal separation module, signal isolation coupling module, OFDM carrier signals processing module, web camera module and electric power driving module；The power supply is sequentially connected with signal separation module, signal isolation coupling module, OFDM carrier signals processing module, web camera module；Two lines are used only with external connection in video camera, instead of the common crystal head cable of traditional network video camera and power cord；This both threads signal can be not only transmitted but also transmit power supply, and not polarity, as long as linking together with two external transmission lines achieves that the transmission of image network signal and the transmission of camera power supply.
Description
Technical field
The utility model is related to web camera field of communication technology, more particularly to a kind of network shooting of two wires connection
Machine.
Background technology
Existing web camera is usually all with eight core cables and two core power-line and external connection, cable connection needs
Specially doing crystal connector needs specific purpose tool and corresponding skill set requirements, and in today that camcorder technology application becomes increasingly popular, this is right
It is a large amount of to truly have difficulty using the layman of video camera, to influence the popularization and application of security monitoring video camera.
Utility model content
The purpose of this utility model aims to solve at least one of the technological deficiency.
For this purpose, a purpose of the utility model is to propose a kind of web camera of two wires connection, video camera with it is outer
Two lines are used only in the connection in portion, instead of the common crystal head cable of traditional network video camera and power cord；It can be by this both threads
Not only it had transmitted signal but also had transmitted power supply, and not polarity, as long as linking together with two external transmission lines achieves that image
The transmission of network signal and the transmission of camera power supply.
To achieve the goals above, the embodiment of the utility model one side provides a kind of network shooting of two wires connection
Machine, video camera are only connect with two wires with external network, complete network video signal and control and the transmission of power supply；Including power supply with
Signal separation module, signal isolation coupling module, OFDM carrier signals processing module, web camera module and power drives mould
Block；The power supply and the input terminal of signal separation module are separately connected power cord and ofdm signal carrier wire；The power supply and letter
The output end of number separation module is connected with the input terminal of signal isolation coupling module；The output of the signal isolation coupling module
End is connected with the signal input part of OFDM carrier signal processing modules；The signal of the OFDM carrier signals processing module exports
End is connected with the signal input part of web camera module；The electric power driving module is separately connected power supply and Signal separator mould
Block, OFDM carrier signals processing module and web camera module.
The electric power driving module is internally provided with PWM pressure units and DC/DC converters.
Further, the input terminal of the electric power driving module passes through the first inductance and the second inductance and power supply and Signal separator
Module is connected, and the power supply signal that the electric power driving module is used to input power cord filters, and is converted into direct current signal, is
OFDM carrier signals processing module and the power supply of web camera module.
Preferably, the signal isolation coupling module includes the first capacitance, the second capacitance, transformer；First capacitance
One end, the second capacitance one end connection power supply and signal separation module output end；The other end of first capacitance and
The other end of two capacitances is separately connected the both ends of the primary coil of transformer.
Preferably, the signal output end of the OFDM carrier signals processing module passes through standard network interface and network shooting
Machine module corresponding network signal end is connected.
According to a kind of web camera of the two wires connection provided by the utility model of the utility model embodiment, compared to
Traditional web camera has at least the following advantages；Using the electric power driving module of model DCCH012A, using inside it
The PWM decompressions of setting and DC/DC conversions, the voltage conversion efficiency of power cord are up to 95%；Video camera only makes with external connection
With two lines, this both threads had not only transmitted signal but also had transmitted power supply, and not polarity, as long as being connected to two external transmission lines
The transmission of image network signal and the transmission of camera power supply are achieved that together.Using two wires camcorder technology, installs and connect
It connects and is quite convenient to, simultaneously because being transmitted using carrier system, transmission range improves a lot compared with network cable transmission, saves simultaneously
A large amount of wire rods.
The additional aspect of the utility model and advantage will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment
Become apparent and is readily appreciated that, wherein：
Fig. 1 is a kind of web camera circuit diagram of two wires connection of the utility model.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
As shown in Figure 1, the utility model embodiment a kind of two wires connection web camera, video camera only use two wires with
External network connects, and completes network video signal and control and the transmission of power supply；Including power supply and signal separation module, signal every
From coupling module, OFDM carrier signals processing module, web camera module and electric power driving module；Power supply and Signal separator mould
The input terminal of block is separately connected power cord and ofdm signal carrier wire；The output end and signal isolation of power supply and signal separation module
The input terminal of coupling module is connected；The output end of signal isolation coupling module and the signal of OFDM carrier signal processing modules are defeated
Enter end to be connected；The signal output end of OFDM carrier signal processing modules is connected with the signal input part of web camera module
It connects；Electric power driving module is separately connected power supply and signal separation module, OFDM carrier signals processing module and web camera mould
Group.
The model DCCH012A of electric power driving module；It is internally provided with PWM pressure units and DC/DC converters.Using big
The PWM pressure units and DC/DC converters of electric current 5A, input voltage range are 3.6-25V, and output voltage is that 0.8V-23V can
Adjust, transfer efficiency is up to 95%, using PWM pressure units by the voltage drop of power cord as low as OFDM carrier signals processing module and
The operating voltage of web camera module.
The input terminal of electric power driving module is connected by the first inductance and the second inductance with power supply with signal separation module,
The power supply signal that electric power driving module is used to input power cord filters, and is converted into direct current signal, while being converted using DC/DC
Device carries out direct current conversion, is that OFDM carrier signals processing module and web camera module are powered.
Signal isolation coupling module includes the first capacitance C1, the second capacitance C2, transformer T2；One end of first capacitance C1,
The output end of one end connection power supply and signal separation module of second capacitance C2；The other end of first capacitance and the second capacitance it is another
One end is separately connected the both ends of the primary coil of transformer.
OFDM carrier signal processing modules DS500M；The model TA38M2 of web camera module.OFDM carrier signals
Processing module passes through standard network interface (TX+TX-RX+RX-) network interface phase corresponding with the web camera module
Connection carries out image transmitting.
Two lines are used only in video camera and external connection by the utility model, this both threads had not only transmitted signal but also transmitted electricity
Source, and not polarity achieve that the transmission of image network signal and take the photograph as long as linking together with two external transmission lines
The transmission of camera power supply.Using two wires camcorder technology, installation and connection are quite convenient to, simultaneously because being passed using carrier system
Defeated, transmission range improves a lot compared with network cable transmission, while saving a large amount of wire rods.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiments or example.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case of above-described embodiment can be changed in the scope of the utility model, change, replace and
Modification.The scope of the utility model is by appended claims and its equivalent limits.
Claims (5)
1. a kind of web camera of two wires connection, which is characterized in that video camera is only connect with two wires with external network, completes net
Network vision signal and control and the transmission of power supply；Including power supply and signal separation module, signal isolation coupling module, OFDM carrier waves
Signal processing module, web camera module and electric power driving module；The power supply and the input terminal of signal separation module are distinguished
Connect power cord and ofdm signal carrier wire；The ofdm signal carrier wire is connected with the input terminal of signal isolation coupling module
It connects；The output end of the signal isolation coupling module is connected with the signal input part of OFDM carrier signal processing modules；It is described
The signal output end of OFDM carrier signal processing modules is connected with the signal input part of web camera module；The power cord
It is connect with the input terminal of the electric power driving module, the input terminal of electric power driving module passes through the first inductance and the second inductance and electricity
Source is connected with signal separation module；The output end of the electric power driving module is taken the photograph with OFDM carrier signals processing module and network
Camera module is connected.
2. the web camera of two wires connection according to claim 1, which is characterized in that the electric power driving module, it is interior
Portion is equipped with PWM pressure units and DC/DC converters.
3. the web camera of two wires according to claim 2 connection, which is characterized in that the electric power driving module it is defeated
Enter end by the first inductance and the second inductance to be connected with power supply with signal separation module, the electric power driving module will be for that will carry
The power supply of wave power cord input is converted into the power supply signal of video camera adaptation, is OFDM carrier signals processing module and network shooting
Machine module is powered.
4. the web camera of two wires connection according to claim 1, which is characterized in that the signal isolation coupling module
Including the first capacitance, the second capacitance, transformer；One end of first capacitance, one end connection power supply of the second capacitance and signal
The output end of separation module；The other end of first capacitance and the other end of the second capacitance are separately connected the primary line of transformer
The both ends of circle.
5. the web camera of two wires connection according to claim 1, which is characterized in that the OFDM carrier signals processing
The signal output end of module is connected by standard network interface with web camera module corresponding network signal end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720801442.5U CN207835583U (en) | 2017-07-04 | 2017-07-04 | The web camera of two wires connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720801442.5U CN207835583U (en) | 2017-07-04 | 2017-07-04 | The web camera of two wires connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207835583U true CN207835583U (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720801442.5U Active CN207835583U (en) | 2017-07-04 | 2017-07-04 | The web camera of two wires connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207835583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420345A (en) * | 2020-11-11 | 2021-02-26 | 广东电网有限责任公司 | Power transformer and power supply system |
-
2017
- 2017-07-04 CN CN201720801442.5U patent/CN207835583U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420345A (en) * | 2020-11-11 | 2021-02-26 | 广东电网有限责任公司 | Power transformer and power supply system |
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