CN110225284A - A kind of supply power coaxially method, apparatus and system - Google Patents
A kind of supply power coaxially method, apparatus and system Download PDFInfo
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- CN110225284A CN110225284A CN201810175906.5A CN201810175906A CN110225284A CN 110225284 A CN110225284 A CN 110225284A CN 201810175906 A CN201810175906 A CN 201810175906A CN 110225284 A CN110225284 A CN 110225284A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
- H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers
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Abstract
The application provides a kind of supply power coaxially method, apparatus and system, which includes video analyzing device, POC relaying, POC power receiving equipment and video source device, and video analyzing device is used for through first transmission line to POC relay transmission power supply signal；After POC relaying is for carrying out boosting processing to power supply signal, POC power receiving equipment is transferred to by second transmission line；POC power receiving equipment is transmitted to video source device for isolating power supply signal from second transmission line；Video source device is used for after working on power, to POC power receiving equipment transmission video signal；POC power receiving equipment is also used to receive the vision signal of video source device transmission, and it is transferred to POC relaying by second transmission line；POC relaying is also used to isolate vision signal from second transmission line, and it is sent to video analyzing device by first transmission line.This method can extend the application scenarios of POC scheme.
Description
Technical field
This application involves Video Supervision Technique more particularly to a kind of supply power coaxially method, apparatus and system.
Background technique
POC (Power Over Coaxia, supply power coaxially) technology is by power supply, video, control Signal averaging on single line
Transmission solves the problems such as power supply, transmission of video, control of front end camera.But not only due to the receivable power of front end camera
Related to the output power of POC but also related with the quality of transmission line, length, the resistance on transmission line is with transmission line
Length increases and becomes larger, and resistance is bigger, and loss is bigger, and the receivable power of front end camera is smaller, therefore, in existing POC scheme
The distance between video analyzing device and front end camera cannot be excessive, and which limit the application scenarios of POC scheme.
Summary of the invention
In view of this, the application provides a kind of supply power coaxially method, apparatus and system.
Specifically, the application is achieved by the following technical solution:
According to the embodiment of the present application in a first aspect, providing a kind of supply power coaxially system, which is characterized in that including video solution
Desorption device, supply power coaxially trunking, supply power coaxially power receiving equipment and video source device, the video analyzing device with it is described
It is connected between supply power coaxially trunking by first transmission line, the supply power coaxially trunking and the supply power coaxially are by electricity
It is connected between equipment by second transmission line: wherein:
The video analyzing device, for transmitting power supply to the supply power coaxially trunking by the first transmission line
Signal；
The supply power coaxially trunking, for isolating power supply signal from the first transmission line, and to the electricity
After source signal carries out boosting processing, the supply power coaxially power receiving equipment is transferred to by the second transmission line；
The supply power coaxially power receiving equipment, for isolating power supply signal from the second transmission line, and is transmitted
To the video source device；
The video source device, for after working on power, Xiang Suoshu supply power coaxially power receiving equipment transmission video signal；
The supply power coaxially power receiving equipment, is also used to receive the vision signal of the video source device transmission, and is led to
It crosses the second transmission line and is transferred to supply power coaxially trunking；
The supply power coaxially trunking is also used to isolate vision signal from the second transmission line, and is led to
It crosses the first transmission line and is sent to the video analyzing device；
The video analyzing device is also used to isolate vision signal from the first transmission line, and carries out video solution
Analysis processing.
Optionally, the supply power coaxially trunking includes: the boosting processing module and first being arranged in power source path
Laminating module, and the signal processing module being arranged in video path；Wherein:
The boosting processing module, for boosting to the power supply signal of the video analyzing device transmission received
Processing；
First laminating module, for passing power supply signal after boost module boosting processing by second transmission line
It is defeated by supply power coaxially power receiving equipment；
First laminating module is also used in power source path block the vision signal；
The signal processing module, for being compensated to the vision signal received and enhanced processing, to enhance signal
Amplitude, and treated vision signal by the first transmission line is transferred to the video analyzing device.
Optionally, the signal processing module includes: the first capacitance, level shift circuit, video amplifier and
Two capacitances；Wherein:
First capacitance, separates for the power supply signal to direct current；
The level shift circuit, for converting the vision signal of first capacitance treated AC coupled
For dc coupled signal；
The video amplifier, for the level shift circuit treated vision signal compensates and amplification at
Reason；
Second capacitance, separates for the power supply signal to direct current.
Optionally, the supply power coaxially power receiving equipment includes: the second laminating module and direct current being arranged in power source path
High-low pressure conversion module, and the third capacitance being arranged in video path；Wherein:
Second laminating module, for being blocked in power source path to vision signal；
The direct current high-low pressure conversion module, for the voltage of the DC power signal received to be converted to specified electricity
Pressure；
The third capacitance, separates for the power supply signal to direct current.
Optionally, the supply power coaxially power receiving equipment and the video source device merge deployment；Or, the supply power coaxially by
Electric equipment and the video source device are disposed independently of each other.
Optionally, the video source device is high definition analogue camera.
According to the second aspect of the embodiment of the present application, a kind of supply power coaxially trunking is provided, including is arranged on power supply road
Boosting processing module and the first laminating module on diameter, and the signal processing module being arranged in video path；Wherein:
The boosting processing module, for being carried out at boosting to the power supply signal of the video analyzing device transmission received
Reason；
First laminating module, for passing power supply signal after boost module boosting processing by second transmission line
It is defeated by supply power coaxially power receiving equipment；
First laminating module is also used in power source path block the vision signal；
The signal processing module, for being compensated to the vision signal received and enhanced processing, to enhance signal
Amplitude, and treated vision signal by the first transmission line is transferred to the video analyzing device.
Optionally, the signal processing module includes: the first capacitance, level shift circuit, video amplifier and
Two capacitances；Wherein:
First capacitance, separates for the power supply signal to direct current；
The level shift circuit, for the vision signal of AC coupled to be converted to dc coupled signal；
The video amplifier, for the level shift circuit treated vision signal compensates and amplification at
Reason.
According to the third aspect of the embodiment of the present application, a kind of supply power coaxially power receiving equipment is provided, comprising: be arranged on power supply road
The second laminating module and direct current high-low pressure conversion module on diameter, and the third capacitance being arranged in video path；Its
In:
Second laminating module, for being blocked in power source path to vision signal；
The direct current high-low pressure conversion module, for the voltage of the DC power signal received to be converted to specified electricity
Pressure；
The third capacitance, separates for the power supply signal to direct current.
Optionally, the supply power coaxially power receiving equipment and video source device merge deployment；Or, the supply power coaxially is set by electricity
Standby and video source device is disposed independently of each other.
According to the fourth aspect of the embodiment of the present application, a kind of supply power coaxially method is provided, is set applied to including video parsing
The supply power coaxially system of standby, supply power coaxially trunking, supply power coaxially power receiving equipment and video source device, the video parsing
It is connected between equipment and the supply power coaxially trunking by first transmission line, the supply power coaxially trunking and described same
It is connected between axis power supply power receiving equipment by second transmission line, which comprises
The supply power coaxially trunking isolates power supply signal from first transmission line；
The supply power coaxially trunking carries out boosting processing to the power supply signal, and is passed by the second transmission line
It is defeated by the supply power coaxially power receiving equipment；
The supply power coaxially power receiving equipment isolates power supply signal from the second transmission line, and is transmitted to described
Video source device；
After the video source device works on power, Xiang Suoshu supply power coaxially power receiving equipment transmission video signal；
The supply power coaxially power receiving equipment receives the vision signal of video source device transmission, and it is passed through described the
Two transmission lines give supply power coaxially trunking；
The supply power coaxially trunking isolates vision signal from the second transmission line, and it is passed through described the
One transmission line is sent to the video analyzing device；
The video analyzing device isolates vision signal from the first transmission line, and carries out video dissection process.
The supply power coaxially system of the embodiment of the present application, it is coaxial by being disposed between video analyzing device and video source device
Power interruption equipment carries out boosting processing by the power supply signal that the supply power coaxially trunking video analyzing device provides, and mentions
Supplying video source device weakens the distance between video analyzing device and front end camera in POC scheme and limits, improves POC
The flexibility of scheme construction wiring, and extend the application scenarios of POC scheme.
Detailed description of the invention
Fig. 1 is a kind of configuration diagram of supply power coaxially system shown in one exemplary embodiment of the application；
Fig. 2 is a kind of structural schematic diagram of POC relaying shown in one exemplary embodiment of the application；
Fig. 3 is a kind of structural schematic diagram of POC relaying shown in the application another exemplary embodiment；
Fig. 4 is a kind of structural schematic diagram of POC power receiving equipment shown in one exemplary embodiment of the application；
Fig. 5 is a kind of schematic diagram of level shift circuit shown in one exemplary embodiment of the application；
Fig. 6 is a kind of schematic diagram of video amplifier shown in one exemplary embodiment of the application；
Fig. 7 is a kind of flow diagram of supply power coaxially method shown in one exemplary embodiment of the application.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.
In order to make those skilled in the art more fully understand technical solution provided by the embodiments of the present application, and keep the application real
The above objects, features, and advantages for applying example can be more obvious and easy to understand, with reference to the accompanying drawing to technical side in the embodiment of the present application
Case is described in further detail.
It referring to Figure 1, is a kind of configuration diagram of supply power coaxially system provided by the embodiments of the present application, as shown in Figure 1,
The supply power coaxially system may include video analyzing device 110, supply power coaxially trunking (referred to as POC relaying) 120, POC
Power receiving equipment 130 and video source device 140；Pass through first transmission line 150 between video analyzing device 110 and POC relaying 120
Connection, POC are relayed and are connected between 120 and POC power receiving equipment 130 by second transmission line 160.Wherein:
Video analyzing device 110, for transmitting power supply signal to POC relaying 120 by first transmission line 150；
POC relaying 120, carries out at boosting for isolating power supply signal from first transmission line 150, and to power supply signal
After reason, POC power receiving equipment 130 is transferred to by second transmission line 160；
POC power receiving equipment 130 for isolating power supply signal from second transmission line 160, and is transmitted to video source
Equipment 140；
Video source device 140, for after working on power, to 130 transmission video signal of POC power receiving equipment；
POC power receiving equipment 130 is also used to receive the vision signal of the transmission of video source device 140, and it is passed by second
Defeated line 160 is transferred to POC relaying 120；
POC relaying 120, is also used to isolate vision signal from second transmission line 160, and passed through first transmission line
150 are sent to video analyzing device 110；
Video analyzing device 110 is also used to isolate vision signal from first transmission line 150, and carries out video parsing
Processing.
In the embodiment of the present application, it is contemplated that the transmission line in existing POC scheme, between video analyzing device and front end camera
When longer, the resistance of transmission line is bigger, and the loss of the power supply signal transmitted on transmission line is bigger, cause video analyzing device with
The distance between front end camera cannot be excessive, and then the application scenarios for limiting POC scheme therefore, can in order to release above-mentioned limitation
To dispose POC relaying between video analyzing device and front end camera, the power supply that video analyzing device provides is believed by POC relaying
Number boosting processing is carried out, to reduce the loss of power supply signal on the transmit path, and extends the transmission range of power supply signal, in turn
Extend the application scenarios of POC scheme.
Correspondingly, in the embodiment of the present application, video analyzing device 110 and video source device 140 in supply power coaxially system
Between be deployed with POC relaying 120, POC relaying 120 boosts for the power supply signal that provides video analyzing device 110
Processing, and the video signal transmission for being supplied to video source device 140, and video source device 140 being issued is to video analyzing device
110。
Wherein, the power supply signal that video analyzing device 110 provides can include but is not limited to the DC power supply of 48V or 12V
Signal.
In the embodiment of the present application, POC relaying 120 can transmit electricity to POC power receiving equipment 130 by second transmission line 160
Source signal；After POC power receiving equipment 130 receives power supply signal, video source device 140 can be transmitted to.
It, can be to 130 transmission video signal of POC power receiving equipment after video source 140 works on power；POC power receiving equipment 130 connects
After receiving vision signal, the video signal transmission can be relayed 120 to POC by second transmission line 160.
After POC relaying 120 receives vision signal, video parsing can be transmitted to by first transmission line 150
Equipment 110.
As it can be seen that not only transmitting power supply signal in first transmission line 150 in supply power coaxially system shown in Fig. 1, also it is superimposed
Vision signal, wherein vision signal is transmitted from POC relaying 120 to 110 direction of video analyzing device；Power supply signal is by video solution
Desorption device 110 relays 120 directions to POC and transmits.
Not only transmission video signal in second transmission line 160 has also been superimposed power supply signal, realize POC repeater 120 to
POC power receiving equipment 130 is powered, and then is powered to video source device 140；Wherein, vision signal is from POC power receiving equipment 130 to POC
Relay the transmission of 120 directions；Power supply signal is transmitted from POC relaying 120 to 130 direction of POC power receiving equipment.
Correspondingly, in the embodiment of the present application, on the one hand POC relaying 120 needs to isolate electricity from first transmission line 150
Source signal, and after carrying out boosting processing, POC is transferred to by electric module 130；On the other hand POC relaying 120 is needed from the second transmission
Vision signal is isolated on line 160, and is transmitted to video analyzing device 110；POC power receiving equipment 130 needs to pass from second
Power supply signal is isolated on defeated line, and is transmitted to video source device 110.
As it can be seen that in the embodiment of the present application, by disposing between video analyzing device and video source device for view
The power supply signal that frequency analyzing device provides carries out the POC relaying of boosting processing, effectively extends the transmission range of POC link,
It is routed in construction more flexible, extends the application scenarios of POC scheme.
The application in one embodiment, POC power receiving equipment 130 and video source device 140 can merge deployment, i.e.,
POC power receiving equipment 130 can be used as a part of video source device 140.
In this embodiment, video source device 140 can be the analogue camera of support POC function, as supported POC function
High definition analogue camera.
In another embodiment of the application, POC power receiving equipment 130 and video source device 140 can also mutually indepedent portions
Administration.
In this embodiment, video source device 140 can not need to support POC function, i.e., it can be common simulation
Camera, such as high definition analogue camera.
It should be noted that in this embodiment, POC power receiving equipment 130 can be deployed in and 140 distance of video source device
Closer position.
As it can be seen that in this embodiment, by by POC power receiving equipment and video source device separation, making whole system both can be with
The analogue camera of POC function is supported in access, and can be accessed common analogue camera and (not supported the simulation phase of POC function
Machine), extend the application scenarios of POC scheme.
Refer to Fig. 2, the application in one embodiment, POC relaying 120 may include: be arranged in power source path
On boosting processing module 121 and the first laminating module 122, and the signal processing module 123 being arranged in video path；Its
In:
Boosting processing module 121, the power supply signal for transmitting to the video analyzing device 110 received carry out at boosting
Reason；
First laminating module 122, for power supply signal after 121 boosting of boost module processing to be passed through second transmission line 160
It is transferred to POC power receiving equipment；
First laminating module 122 is also used to block vision signal in power source path；
Signal processing module 123, for being compensated to the vision signal received and enhanced processing, to enhance signal width
Degree, and will treated vision signal by first transmission line transmission 150 to video analyzing device 110.
In this embodiment, the power supply signal that POC relaying can not only provide video analyzing device carries out boosting processing,
The shaping of vision signal can also be carried out, optimizes vision signal, extends transmission distance.
In this embodiment, Low ESR is presented to power supply signal in the first laminating module 122, keeps video analyzing device 110 logical
POC power receiving equipment 130 can be transmitted to by crossing the power supply signal that first transmission line 150 transmits.Meanwhile first laminating module
High impedance is presented in 122 pairs of vision signals, and the vision signal transmitted in power source path to POC power receiving equipment 130 hinders
It is disconnected.
In this embodiment, it is contemplated that after long distance transmission, vision signal has a degree of decaying, due to passing
The characteristic of defeated line, high frequency signal attenuation are bigger.Therefore, signal processing module 123 can compensate and amplify to signal, enhancing
Signal amplitude extends the transmission range that POC relaying 120 arrives video analyzing device 110.
Fig. 3 is referred to, in the one of embodiment of the embodiment, above-mentioned signal processing module 123 may include:
One capacitance 1231, level shift circuit 1232, video amplifier 1233 and the second capacitance 1234；Wherein:
First capacitance 1231, separates for the power supply signal to direct current；
Level shift circuit 1232, for converting the vision signal of the first capacitance 1231 treated AC coupled
For dc coupled signal；
Video amplifier 1233, for level shift circuit 1232 treated vision signal compensates and amplification at
Reason；
Second capacitance 1234, separates for the power supply signal to direct current.
It in this embodiment, can be in order to avoid power supply signal transmits in video path, in signal processing module 123
First capacitance 1231 and the second capacitance 1234 are set, and first capacitance 1231 and the second capacitance 1234 can
Separated with the power supply signal to direct current, makes to be only capable of the vision signal by exchange in video path.
In this embodiment, signal processing module 123 carries out DC power signal by the first capacitance 1231
The vision signal of available AC coupled after partition, signal processing module 123 can be incited somebody to action by level shift circuit 1232
The vision signal of AC coupled is converted to dc coupled signal, and by video amplifier 1233 according to preset signal amplification factor
To level shift circuit 1232, treated that vision signal compensates and enhanced processing.
In one example, the schematic diagram of above-mentioned level shift circuit 1232 can be as shown in Figure 4, wherein the level moves
Position circuit 1232 can use dual-stage amplifier, and first order amplification factor is set as -1, and second level amplification factor is set as -1, always
Amplification factor it is constant, vision signal becomes direct current signal by AC signal；Wherein it is possible to which direct current can be set by adjusting Rs
Bias level.
In one example, the schematic diagram of above-mentioned video amplifier 1233 can be as shown in Figure 5, wherein the video amplifier electricity
Road may include two parts: amplitude equalizer (in this example by taking passive equalizer as an example) and the video amplifier.Due to signal
When by long distance transmission, high frequency signal attenuation is bigger than low frequency signals decay, and the low cut of passive equalizer circuit is than high
Frequency decaying is bigger, therefore, can make low frequency consistent with the decaying of high frequency by adjusting parameter, then pass through the video amplifier again
Signal amplitude is further amplified in (Video Amp).
In this example, for the vision signal transmitted by second transmission line 160, high-frequency signal is passed through from capacitor C4
It crosses, low frequency signal passes through resistance R6, and R7 has certain decaying, low frequency can be made to decline by adjusting the parameter of passive equalizer circuit
Subtract with high frequency attenuation close to consistent.
In video amplifier circuit, the amplification factor of low frequency signal can be determined by the ratio of R4/R5, by adjustable
The frequency range of resistance Rs, C1 adjustment high frequency compensation.
It should be noted that in this embodiment, amplitude equalizer is not limited to passive equalizer, it can also use and be directed to
The active amplitude equalizer that high frequency section compensates, specific implementation do not repeat them here herein.
In addition, in this embodiment, when the video amplifier for including in signal processing module 122 is rail-to-rail amplifier, letter
It can not need to include level shift circuit in number processing module 122, specific implementation does not repeat them here herein.
Refer to Fig. 6, the application in one embodiment, above-mentioned POC power receiving equipment 130 may include: setting exist
The second laminating module 131 and direct current high-low pressure conversion module 132 in power source path, and the third being arranged in video path
Capacitance 133；Wherein:
Second laminating module 131, for being blocked in power source path to vision signal；
Direct current high-low pressure conversion module 132, for the voltage of the DC power signal received to be converted to given voltage；
Third capacitance 133 separates for the power supply signal to direct current.
In this embodiment, the effect of POC power receiving equipment 130 includes mainly by the power supply signal received by being depressured to
Given voltage (usually 12V, hereinafter by taking 12V as an example) is powered for video source device 140；In addition, POC power receiving equipment 130 is also
The vision signal of video source device 140 can be added on power supply signal, POC relaying is passed to by second transmission line 160
120。
In this embodiment, Low ESR is presented to power supply signal in the second laminating module 131, makes POC relaying 120 by second
The power supply signal that transmission line 160 transmits can be transmitted to video source device 140.Meanwhile second laminating module 131 to video
High impedance is presented in signal, blocks in power source path to vision signal.
In this embodiment, it is contemplated that the general operations voltage of existing video source device is generally 12V, therefore, for
The power supply signal that POC relaying 120 is transmitted by second transmission line 160, POC power receiving equipment 130 can pass through direct current height
Its voltage is reduced to 12V by pressure conversion module (referred to as DCDC module) 132, and is supplied to video source device 140.
Optionally, in the embodiment of the present application, video analyzing device 110 can be according to actual needs to video source device 140
It transmits coaxial signal (being properly termed as coaxial telecommunications signal), is communicated；Similarly, video source device 140 can also be to video solution
Desorption device 110 transmits coaxial telecommunications signal, to realize the communication between video analyzing device 110 and video source device 140.
Wherein, video source device 140 is led to the coaxial telecommunications signal that video analyzing device 110 is sent by POC power receiving equipment
It crosses second transmission line 160 and is transferred to POC trunking 120, and be transferred to by POC trunking 120 by first transmission line 150
Video analyzing device 110, specific processing send the processing of vision signal with video source device 140 to video analyzing device 110
Similar, the embodiment of the present application does not repeat them here this.
Similarly, video analyzing device 110 passes through first transmission line to the coaxial telecommunications signal that video source device 140 is sent
150 are transferred to POC trunking 120, and are transferred to POC power receiving equipment by second transmission line 160 by POC trunking 120
130, in turn, video source device is transferred to by POC power receiving equipment 130, specific processing is parsed with video source device 140 to video
The specifically processing that equipment 110 sends coaxial telecommunications signal is similar, and the embodiment of the present application does not repeat them here this.
Fig. 7 is referred to, is a kind of flow diagram of supply power coaxially method provided by the embodiments of the present application, wherein this is same
Axis method of supplying power to can be applied to above-mentioned supply power coaxially system, as shown in fig. 7, the supply power coaxially method may include following step
It is rapid:
Step S700, supply power coaxially trunking isolates power supply signal from first transmission line.
Step S710, supply power coaxially trunking carries out boosting processing to power supply signal, and is transmitted by second transmission line
To coaxial power receiving equipment.
In the embodiment of the present application, it is contemplated that the transmission line in existing POC scheme, between video analyzing device and front end camera
When longer, the resistance of transmission line is bigger, and the loss of the power supply signal transmitted on transmission line is bigger, cause video analyzing device with
The distance between front end camera cannot be excessive, and then the application scenarios for limiting POC scheme therefore, can in order to release above-mentioned limitation
To dispose POC relaying between video analyzing device and front end camera, the power supply that video analyzing device provides is believed by POC relaying
Number boosting processing is carried out, to reduce the loss of power supply signal on the transmit path, and extends the transmission range of power supply signal, in turn
Extend the application scenarios of POC scheme.
It correspondingly, in the embodiment of the present application, can be in video analyzing device (such as DVR (Digital Video
Recorder, hard disk video recorder)) and video source device (such as high definition analogue camera) between deployment POC relaying, the POC relaying use
Boosting processing is carried out in the power supply signal provided video analyzing device, and is supplied to video source device, and by video source device
The video signal transmission of sending is to video analyzing device.
Step S720, supply power coaxially power receiving equipment isolates power supply signal from second transmission line, and is transmitted to view
Frequency source equipment.
In the embodiment of the present application, not only transmission video signal in second transmission line has also been superimposed power supply signal.
Correspondingly, in the embodiment of the present application, POC power receiving equipment needs isolate power supply signal from second transmission line,
And it is transmitted to video source device.
Step S730, after video source device works on power, to supply power coaxially power receiving equipment transmission video signal.
It, can be to POC power receiving equipment transmission video signal after video source device works on power in the embodiment of the present application.
Step S740, supply power coaxially power receiving equipment receives the vision signal of video source device transmission, and it is passed through second
Transmission line gives supply power coaxially trunking.
In the embodiment of the present application, after POC power receiving equipment receives the vision signal of video source device transmission, it can pass through
Second transmission line relays the video signal transmission to POC.
Step S750, supply power coaxially trunking isolates vision signal from second transmission line, and it is passed through first
Transmission line is sent to video analyzing device.
In the embodiment of the present application, not only transmission video signal in second transmission line has also been superimposed power supply signal.
Correspondingly, in the embodiment of the present application, POC relaying needs to isolate vision signal from second transmission line, and will
It is added in first transmission line, is transferred to video analyzing device.
Step S760, video analyzing device isolates vision signal from first transmission line, and carries out video dissection process.
In the embodiment of the present application, power supply signal is not only transmitted in first transmission line, has also been superimposed vision signal.
Video analyzing device can isolate vision signal from first transmission line, and carry out video dissection process.
It should be noted that in the embodiment of the present application, video analyzing device receives the specific place after vision signal
Reason mode may refer to the related realization in existing POC scheme, and this will not be repeated here for the embodiment of the present application.
In the embodiment of the present application, set by disposing supply power coaxially relaying between video analyzing device and video source device
It is standby, boosting processing is carried out by the power supply signal that the supply power coaxially trunking video analyzing device provides, and be supplied to video source
Equipment weakens the distance between video analyzing device and front end camera in POC scheme and limits, and improves POC scheme construction cloth
The flexibility of line, and extend the application scenarios of POC scheme.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (11)
1. a kind of supply power coaxially system, which is characterized in that including video analyzing device, supply power coaxially trunking, supply power coaxially
Power receiving equipment and video source device pass through the first transmission between the video analyzing device and the supply power coaxially trunking
Line connection, is connected between the supply power coaxially trunking and the supply power coaxially power receiving equipment by second transmission line: wherein:
The video analyzing device, for transmitting power supply letter to the supply power coaxially trunking by the first transmission line
Number；
The supply power coaxially trunking is believed for isolating power supply signal from the first transmission line, and to the power supply
After number carrying out boosting processing, the supply power coaxially power receiving equipment is transferred to by the second transmission line；
The supply power coaxially power receiving equipment for isolating power supply signal from the second transmission line, and is transmitted to institute
State video source device；
The video source device, for after working on power, Xiang Suoshu supply power coaxially power receiving equipment transmission video signal；
The supply power coaxially power receiving equipment, is also used to receive the vision signal of the video source device transmission, and is passed through institute
It states second transmission line and is transferred to supply power coaxially trunking；
The supply power coaxially trunking is also used to isolate vision signal from the second transmission line, and is passed through institute
It states first transmission line and is sent to the video analyzing device；
The video analyzing device is also used to isolate vision signal from the first transmission line, and carries out at video parsing
Reason.
2. supply power coaxially system according to claim 1, which is characterized in that the supply power coaxially trunking includes: to set
Set boosting processing module and the first laminating module in power source path, and the signal processing mould being arranged in video path
Block；Wherein:
The boosting processing module, for being carried out at boosting to the power supply signal of the video analyzing device transmission received
Reason；
First laminating module, for boost module boosting treated power supply signal to be passed through second transmission line transmission
Give supply power coaxially power receiving equipment；
First laminating module is also used in power source path block the vision signal；
The signal processing module, for being compensated to the vision signal received and enhanced processing, to enhance signal amplitude,
And treated vision signal by the first transmission line is transferred to the video analyzing device.
3. supply power coaxially system according to claim 2, which is characterized in that the signal processing module include: first every
Straight capacitor, level shift circuit, video amplifier and the second capacitance；Wherein:
First capacitance, separates for the power supply signal to direct current；
The level shift circuit, for being converted to directly the vision signal of first capacitance treated AC coupled
Flow coupled signal；
The video amplifier, for treated that vision signal compensates and enhanced processing to the level shift circuit；
Second capacitance, separates for the power supply signal to direct current.
4. supply power coaxially system according to claim 1, which is characterized in that the supply power coaxially power receiving equipment includes: to set
Set the second laminating module and direct current high-low pressure conversion module in power source path, and the third being arranged in video path every
Straight capacitor；Wherein:
Second laminating module, for being blocked in power source path to vision signal；
The direct current high-low pressure conversion module, for the voltage of the DC power signal received to be converted to given voltage；
The third capacitance, separates for the power supply signal to direct current.
5. supply power coaxially system according to claim 1, which is characterized in that the supply power coaxially power receiving equipment and the view
Frequency source equipment merges deployment；Or, the supply power coaxially power receiving equipment and the video source device are disposed independently of each other.
6. supply power coaxially system according to claim 1, which is characterized in that the video source device is that high definition simulates phase
Machine.
7. a kind of supply power coaxially trunking, which is characterized in that including the boosting processing module being arranged in power source path and
One laminating module, and the signal processing module being arranged in video path；Wherein:
The boosting processing module, for carrying out boosting processing to the power supply signal of the video analyzing device transmission received；
First laminating module, for power supply signal after boost module boosting processing to be transferred to by second transmission line
Supply power coaxially power receiving equipment；
First laminating module is also used in power source path block the vision signal；
The signal processing module, for being compensated to the vision signal received and enhanced processing, to enhance signal amplitude,
And treated vision signal by the first transmission line is transferred to the video analyzing device.
8. supply power coaxially trunking according to claim 7, which is characterized in that the signal processing module includes:
One capacitance, level shift circuit, video amplifier and the second capacitance；Wherein:
First capacitance, separates for the power supply signal to direct current；
The level shift circuit, for the vision signal of AC coupled to be converted to dc coupled signal；
The video amplifier, for treated that vision signal compensates and enhanced processing to the level shift circuit；
Second capacitance, separates for the power supply signal to direct current.
9. a kind of supply power coaxially power receiving equipment characterized by comprising the second laminating module in power source path and straight is arranged in
Flow high-low pressure conversion module, and the third capacitance being arranged in video path；Wherein:
Second laminating module, for being blocked in power source path to vision signal；
The direct current high-low pressure conversion module, for the voltage of the DC power signal received to be converted to given voltage；
The third capacitance, separates for the power supply signal to direct current.
10. supply power coaxially power receiving equipment according to claim 9, which is characterized in that the supply power coaxially power receiving equipment and
Video source device merges deployment；Or, the supply power coaxially power receiving equipment and video source device are disposed independently of each other.
11. a kind of supply power coaxially method, which is characterized in that be applied to including video analyzing device, supply power coaxially trunking, same
The supply power coaxially system of axis power supply power receiving equipment and video source device, the video analyzing device and the supply power coaxially relay
It is connected between equipment by first transmission line, is passed through between the supply power coaxially trunking and the supply power coaxially power receiving equipment
Second transmission line connection, which comprises
The supply power coaxially trunking isolates power supply signal from first transmission line；
The supply power coaxially trunking carries out boosting processing to the power supply signal, and is transferred to by the second transmission line
The supply power coaxially power receiving equipment；
The supply power coaxially power receiving equipment isolates power supply signal from the second transmission line, and is transmitted to the video
Source device；
After the video source device works on power, Xiang Suoshu supply power coaxially power receiving equipment transmission video signal；
The supply power coaxially power receiving equipment receives the vision signal of the video source device transmission, and it is passed by described second
Defeated line is transferred to supply power coaxially trunking；
The supply power coaxially trunking isolates vision signal from the second transmission line, and it is passed by described first
Defeated line is sent to the video analyzing device；
The video analyzing device isolates vision signal from the first transmission line, and carries out video dissection process.
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Cited By (1)
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| CN110225283A (en) * | 2018-03-02 | 2019-09-10 | 杭州海康威视数字技术股份有限公司 | A kind of supply power coaxially method, apparatus and system |
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