CN109257533A - A kind of networking power supply unit and camera device for camera - Google Patents
A kind of networking power supply unit and camera device for camera Download PDFInfo
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- CN109257533A CN109257533A CN201810213176.3A CN201810213176A CN109257533A CN 109257533 A CN109257533 A CN 109257533A CN 201810213176 A CN201810213176 A CN 201810213176A CN 109257533 A CN109257533 A CN 109257533A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/65—Control of camera operation in relation to power supply
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Abstract
The present invention relates to a kind of networking power supply unit and camera device for camera, device therein includes: receiving end PD circuit, feeder ear PSE circuit, direct current regulation circuit and interchanger；PD circuit is connect with the PSE circuit, direct current regulation circuit and the interchanger respectively, and direct current regulation circuit is connect with camera and interchanger respectively, and interchanger is connect with camera and PSE circuit respectively.The present invention utilizes PoE technology, so that each networking power supply unit can either provide electric power for camera, it is able to carry out data transmission again, and it can be connected in series between each networking power supply unit, so as to which each camera device is connected into a complete camera device networking power supply system using a cable, same line transmission while electric power and data is realized, difficulty of construction and cost are greatly reduced.
Description
Technical field
The present invention relates to camera power supply plan and networking plans, and in particular to a kind of networking for camera is for Denso
It sets and camera device.
Background technique
With universal, camera group network system and the item for being routed to and needing to optimize for one of constructing of camera technology
Mesh, wherein becoming dominant systems by switchboard unit network+DC12 power-supply wiring, the laying mode of this networking+power supply needs two
Cable, comprising: cable and power supply line, with the increase of camera quantity in group network system, the complexity of construction cost and networking
Property can also be multiplied.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of networking power supply unit and camera device for camera.
The technical scheme to solve the above technical problems is that a kind of networking power supply unit for camera, packet
It includes: receiving end PD circuit, feeder ear PSE circuit, direct current regulation circuit and interchanger；
The PD circuit is connect with the PSE circuit, the direct current regulation circuit and the interchanger respectively, the direct current
Voltage regulator circuit is connect with camera and the interchanger respectively, the interchanger respectively with the camera and the PSE circuit
Connection；
The PD circuit is used for externally input active Ethernet PoE Signal separator into partial power and network data portion
Point, the direct current regulation circuit for after the partial power is converted into the camera and the power supply for exchange,
The interchanger is used to carry out data exchange with the camera and the PSE circuit, and the PSE circuit is used for the electric power
The network data of part and interchanger input is mixed into PoE signal and exports.
For achieving the above object, the present invention also provides a kind of camera devices, including camera and above-mentioned networking to supply
Electric installation.
The beneficial effects of the present invention are: using PoE technology, so that each networking power supply unit can either provide for camera
Electric power, and it is able to carry out data transmission, and can be connected in series between each networking power supply unit, so as to utilize a cable
Each camera device is connected into a complete camera device networking power supply system, while realizing electric power and data
Same line transmission, greatly reduces difficulty of construction and cost.
Detailed description of the invention
Fig. 1 is the attachment structure schematic diagram of the power supply of camera networking in the prior art；
Fig. 2 is the attachment structure schematic diagram of the networking power supply of single camera in the prior art；
Fig. 3 is a kind of attachment structure schematic diagram of the networking power supply unit for camera provided in an embodiment of the present invention；
Fig. 4 is the networking power supply system of PoE interchanger provided in an embodiment of the present invention and multiple camera devices composition
Attachment structure schematic diagram；
Fig. 5 is the circuit diagram of PD circuit provided in an embodiment of the present invention；
Fig. 6 is the circuit diagram of Switching Power Supply provided in an embodiment of the present invention and D.C. regulated power supply；
Fig. 7 is the circuit diagram of interchanger provided in an embodiment of the present invention；
Fig. 8 is the circuit diagram of PSE circuit provided in an embodiment of the present invention.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Before understanding the present invention, it is to be understood that the mode that once camera networking is powered in the prior art, such as Fig. 1 institute
Show, in the prior art, camera networking needs interchanger and power supply two parts to pass through cable and electricity with each camera respectively
Source line is connect with camera.Such connection type can make each camera not influence each other, but for exchange data mouth
And the pressure of wire rod is very big.
Fig. 2 is the attachment structure schematic diagram that the networking of single camera is powered, figure it is seen that power supply power supply sum number
It is carried out respectively according to transmission, and the function of realizing is fairly simple.Power utilization power supply chip by DC12V be converted into 5V and
Two voltages of 3.3V power to corresponding circuit.And camera module then passes through onboard exchanger chip and extraneous interchanger
It is linked together using cable.The function most basic as camera is to complete the acquisition of image, is handled, analysis, indicator light tune
The interaction of section and camera and server, camera in the market can satisfy the requirement of these basic functions, but be
Realization these requirements, interchanger need to reserve that many network interfaces considerably increase cost in this way and in addition each camera will also be
Fishing line material is for powering.
It describes in detail below to the technical solution of the embodiment of the present invention.
Fig. 3 is a kind of attachment structure schematic diagram of the networking power supply unit for camera provided in an embodiment of the present invention,
As shown in figure 3, the device includes: receiving end PD circuit, feeder ear PSE circuit, direct current regulation circuit and interchanger；
The PD circuit is connect with the PSE circuit, the direct current regulation circuit and the interchanger respectively, the direct current
Voltage regulator circuit is connect with camera and the interchanger respectively, the interchanger respectively with the camera and the PSE circuit
Connection；
The PD circuit is used for externally input active Ethernet PoE Signal separator into partial power and network data portion
Point, the direct current regulation circuit for after the partial power is converted into the camera and the power supply for exchange,
The interchanger is used to carry out data exchange with the camera and the PSE circuit, and the PSE circuit is used for the electric power
The network data of part and interchanger input is mixed into PoE signal and exports.
Optionally, in this embodiment, the direct current regulation circuit includes steady for the direct current for the power supply for exchange
Voltage source and for for the camera and the D.C. regulated power supply power supply Switching Power Supply；
The Switching Power Supply is connect with the PD circuit, camera and the D.C. regulated power supply respectively, and the direct current is steady
Voltage source is also connect with the interchanger.
Specifically, as shown in figure 3, being divided into two parts, system power supply part and data portion inside the networking power supply unit.
Prime equipment provides a PoE cable, and PoE cable has the function of two kinds of cable and power supply simultaneously, and PoE cable is accessed and is exchanged
On the interface of machine, each networking power supply unit just passes through interchanger and constitutes network.And it is picked out from another interface of interchanger
Prepare the cable connecting with next stage networking power supply unit.The partial power of PoE is by PD circuit conversion at the electricity of a 48V
Source.48V power supply is converted into 5V by Switching Power Supply and powers to camera module, is converted into using D.C. regulated power supply
3.3V power supply and give the equipment such as interchanger power supply.And 48V generates one further through PSE circuit and meets IEEE802.3af/at mark
Quasi- PoE partial power, and using the PoE network transformer in PSE circuit the partial power of PoE and the data of interchanger
Part is mixed into a PoE network interface and comes for connecting with next stage networking power supply unit.And three ports of interchanger point
It is not connected with prime equipment, subsequent equipment and camera module.
In the embodiment of the present invention, the networking power supply unit of each camera has PD circuit (PoE input circuit) and PSE
Circuit (PoE output circuit) so that each networking power supply unit can either provide electric power for camera, and is able to carry out data biography
It is defeated, and can be connected in series between each networking power supply unit, as shown in figure 4, by a cable can by PoE interchanger with
Each camera device is connected into a complete camera device networking power supply system.
This PoE powers networking model, so that a cable is provided with the difunctional of power supply and data, cable is greatly saved
Cost, and do not need to provide other power supplys again.The PoE transmission mode of the adoptable standard of the present apparatus, it is possible to adopt
It is accessed with gigabit network interface, interchanger will not be burnt out.In addition, the transmission range of PoE is 100 meters and undamped, this also allows equipment
The distance between can be longer.
The technical program is entered the court interior camera difficult wiring for market, and the problem of power transmission mode complexity has carried out skill
Art innovation, integrates the above-mentioned networking power supply unit with PoE function in camera device, and camera device is become can be with
Only need a cable that can connect, it can networking and the system of transmitting electric power by cable series connection.Greatly reduce construction
Difficulty and cost, by the optimization of system, the general power of single camera device does not exceed 5W, the net of single PoE interchanger
Mouthful power consumption provided is limited, and the low-power consumption of this camera device just allows single switch mouth that can connect multiple cameras
Equipment.In the actual construction process, by taking one 384 watts of 24 mouthfuls of PoE interchanger as an example, this interchanger can be by 76
Camera device network consisting and power supply.
Lower mask body introduces the circuit structure of each built-up circuit in the networking power supply unit.
Optionally, in this embodiment, as shown in figure 5, the PD circuit includes the first socket P5, rectifier bridge D6, first
Capacitor C29, the second capacitor C15, third capacitor C11, first diode D7, the second diode D3, first resistor R47, the second electricity
Hinder R45,3rd resistor R49, the first power transistor Q2, receiving end PD control device U4 and first network transformer U7；
3 foot of the first signal input pin of the first socket P5,4 foot of second signal input pin, the output of the first signal
5 foot of pin and 6 foot of second signal output pin respectively with 16 foot of the first signal input pin of the first network transformer,
14 foot of binary signal input pin, 11 foot of the first signal output pin are connected with 9 foot of second signal output pin,
1 foot of the first data-out pin, 3 foot of the second data-out pin, the first data of the first network transformer
6 foot of output pin and 8 foot of the second data output pins are connect with the interchanger, the first electricity of the first network transformer
10 foot of power output pin and 15 foot of the second electric power output pin are defeated with the first input end COMTB of the rectifier bridge and second respectively
Enter COMT is held to be correspondingly connected with,
First output end of the rectifier bridge respectively with the first end of the first capacitor C29, the second capacitor C15 first
End, the first end of first resistor R47, the first end of third capacitor C11, the first end of second resistance R45, first diode D7
Anode, PD control device 1 foot of VDD pin connected with the feeder ear+48V of PD circuit,
The second end of the first resistor R47 is connect with 2 foot of DEN pin of the PD control device, the third capacitor C11
Second end respectively with 5 foot of RTN pin of the PD control device, the anode of the second diode D3 and the first power transistor Q2
Source electrode connection, the cathode of the second diode D3 respectively with 6 foot of CDB pin of the PD control device, second resistance R45 the
Two ends are connected with the grid of the first power transistor Q2, the grounded drain of the first power transistor Q2, the rectifier bridge D6
Second output terminal second end, the 3rd resistor with the first capacitor C29, first diode D7, the second capacitor C15 respectively
The first end of C49, the PD control device 4 foot of VSS pin connected with 9 foot of PWPD pin, the second end of the 3rd resistor R49
It is connect with 3 foot of CLS pin of the PD control device.
Specifically, this system selects the TPS2378DDA chip of TI company to pass through TPS2378DDA chip as PD equipment
To obtain the electric power in PoE cable.A DC48V power supply is generated using TPS2378DDA.U4 is the basis electricity of entire PD system
Road.P5 is the interface of PoE cable, and comes by network transformer chip HLL20NL network data part access switch core
Piece and partial power is connected on two input pins of rectifier bridge (D6).D6 is marked by rectifying IEEE802.3af/at is met
Quasi- power transmission can pass through cable when prime detects that U4 is the PD equipment for meeting IEEE802.3af/at standard to U4
With the frequency different from cable data communication 1 foot of power transmission to U4 and 4, on 9 feet.U4 generates one using entire circuit
The power supply of 48V.48V power supply provides power supply for subsequent entire circuit and passes through PSE circuit for power transmission to next stage.
Optionally, in this embodiment, as shown in fig. 6, the Switching Power Supply include the 4th capacitor C3, the 5th capacitor C5,
6th capacitor C7, the 7th capacitor C6, the 8th capacitor C4, the 9th capacitor C2, the 4th resistance R7, the 5th resistance R8, the 6th resistance
R15, the 7th resistance R14, the 8th resistance R13, the 9th resistance R9, third diode D1, the first inductance L1 and the first voltage-stablizer U1；
The first end of the 4th capacitor C3 first end with the feeder ear+48V of the PD circuit, the 4th resistance R7 respectively
Connected with 2 foot of VIN pin of the first voltage-stablizer U1, the second end of the 4th capacitor C3 respectively with the 5th resistance R8
One end, the first end of the 5th capacitor C5, the first end of the 6th capacitor C7, the first end of the 7th capacitor C6, the 6th resistance R15
9 foot of the GND pin connection of one end, the first end of the 7th resistance R14, the first end of the 8th capacitor C4 and the first voltage-stablizer U1,
The second end of the 4th resistance R7 connects with 3 foot of EN pin of the second end of the 5th resistance R8 and the first voltage-stablizer U1 respectively
It connects, COMP of the second end of the 5th capacitor C5 respectively with the first end of the 8th resistance R13 and the first voltage-stablizer U1 draws
The connection of 8 foot of foot, the second end of the 8th resistance R13 are connect with the second end of the 6th capacitor C7, the 7th capacitor C6
Second end connect with 4 foot of SS/TR pin of the first voltage-stablizer U1, the second end of the 6th resistance R15 and described the
5 foot of RT/CLK pin of one voltage-stablizer U1 connects, and the second end of the 7th resistance R14 is respectively with the first voltage-stablizer U1's
The connection of the first end of 7 foot of VSENSE pin and the 9th resistance R9, the second end of the 9th resistance R9 are electric with described first respectively
First end, the second end of the 8th capacitor C4 of sense L1 is connected with the feeder ear VCC5V of Switching Power Supply, the first inductance L1's
Second end respectively with the cathode of the third diode D1,10 foot of PH pin of the first voltage-stablizer U1 and the 9th capacitor C2 first
End connection, the plus earth of the third diode D1, the second end of the 9th capacitor C2 and the first voltage-stablizer U1's
The connection of 1 foot of BOOT pin.
The D.C. regulated power supply includes the tenth capacitor C31, the 11st capacitor C32, the 12nd capacitor C33, the second inductance
BD1 and the second voltage-stablizer U6；
The first end of the tenth capacitor C31 Vin with the feeder ear of the Switching Power Supply and the second voltage-stablizer U6 respectively
3 foot of pin connection, the second end of the tenth capacitor C31 respectively with 1 foot of GND pin of the second voltage-stablizer U6, the 11st
The first end of capacitor C32 is grounded after connecting with the first end of the 12nd capacitor C33, the second end point of the 11st capacitor C32
Not with 2 foot of Vout pin of second voltage-stablizer, the first feeder ear DVDD3.3V of the D.C. regulated power supply and described
The first end of two inductance BD1 connects, the second end of the 12nd capacitor C33 respectively with the second end of the second inductance BD1 and institute
State the second feeder ear AVDD3.3V connection of D.C. regulated power supply.
Specifically, D.C. regulated power supply completes the function that DC48V is converted to DC5V using the TPS54260 (U1) of TI company
Can, the circuit of U1 and surrounding completes this function.It the case where in order to meet non-PoE input i.e. common DC12V input, takes the photograph
As DC12V is turned the chip of DC5V by head inner utilization TPS5430 (U5), this partial circuit just completes PoE connection and common
The function that the double connections of DC12V+ cable can use.DC5V is finally converted into stable DC3.3V using LM1117-3.3V, it can
For the power supply of the circuits such as interchanger, DC5V is also camera module power supply.
Optionally, in this embodiment, as shown in fig. 7, the interchanger includes the second socket P1, the second network transformer
U9, exchanger chip U8, the 13rd capacitor C41, the 14th capacitor 42, the 15th capacitor 46, the 16th capacitor C47 and crystal oscillator
Y1；
3 foot of RXIN1 pin, 2 foot of RXIP1 pin, 4 foot of TXON1 pin, 5 foot of TXOP1 pin of the exchanger chip U8
Respectively with 1 foot of the first data-out pin of the first network transformer U7,3 foot of the second data-out pin, the first data
6 foot of output pin and the connection of 8 foot of the second data output pins, the TXOP2 pin of the exchanger chip U8, TXON2 pin,
RXIP2 pin, RXIN2 pin are connect with the PSE circuit, the TXOP3 pin of the exchanger chip U8, TXON3 pin,
RXIP3 pin and RXIN3 pin respectively with 9 foot of the first data output pins of the second network transformer U9, the second data
11 foot of output pin, 14 foot of the first data-out pin and the connection of 16 foot of the second data-out pin, the second network transformation
1 foot of the first signal input pin of device U9,3 foot of second signal input pin, 6 foot of the first signal output pin and second signal are defeated
8 foot of pin is believed with 4 foot of the first signal input pin of the second socket P1,3 foot of second signal input pin, first respectively out
Number 2 foot of output pin is connected with 1 foot of second signal output pin, 37 foot of V33IN pin and DVDDH of the exchanger chip U8
31 foot of pin is connect with the first feeder ear DVDD3.3V of the D.C. regulated power supply, the exchanger chip U8's
38 foot of AVDDHPLL pin and 6,8,18,48 foot of AVDDH pin with the second feeder ear of the D.C. regulated power supply
AVDD3.3V connection, 37 foot of V33IN pin of the exchanger chip U8 also respectively with the 13rd capacitor C41, the 14th
The first end of capacitor C42 connects, and second end, the second end of the 14th capacitor C42 of the 13rd capacitor C41 is grounded, institute
The X0 pin 39 for stating exchanger chip U8 is connect with the first end of the crystal oscillator Y1 and the 15th capacitor C46 respectively, and the described tenth
The second end of five capacitor C46 is grounded, 40 foot of X1 pin of the exchanger chip U8 respectively with the second end of the crystal oscillator Y1, with
And the 16th capacitor C47 first end connection, the second end that the 16th electricity C47 holds is grounded.
Specifically, each equipment is formed one using three network interfaces that exchanger chip RTL8305NB is drawn
Network.Wherein U9 is the network switch, and can draw three road network signals from U9 is four data lines with PoE input connection respectively
TXOP1, TXON1, RXIP1, RXIN1, with PoE output connection four data lines TTXOP2, TXON2, RXIP2, RXIN2 and with
Four data lines TXOP3, TXON3, RXIP3, RXIN3 of camera module connection.Wherein TXOP1, TXON1, RXIP1,
RXIN1, TXOP2, TXON2, RXIP2, RXIN2 are for common data line in non-PoE mode.This two groups of data lines only exist
PoE function is the differentiation on ability is functional, and two groups of data line functions are identical under non-PoE mode.And D9, D10, D11 are three
The data indicator light of network interface.Y1 is the crystal oscillator of exchanger chip.U8 is entire switch basis circuit.
Optionally, in this embodiment, as shown in figure 8, the PSE circuit includes third socket P2, third network transformation
Device U3, second power transistor Q1, PSE chip U2, eleventh resistor, twelfth resistor, thirteenth resistor, the 14th resistance,
15th resistance, the 17th capacitor, the 18th capacitor, the 19th capacitor, third diode and key switch；
3 foot of the first signal input pin of the third socket P2,4 foot of second signal input pin, the output of the first signal
5 foot of pin and 6 foot of second signal output pin respectively with 1 foot of the first signal input pin of the third network transformer U3,
3 foot of second signal input pin, 6 foot of the first signal output pin are connected with 8 foot of second signal output pin, the third network
14 foot of the first data-out pin, 16 foot of the second data-out pin, 9 foot of the first data output pins and second of transformer U3
11 foot of data output pins respectively with 12 foot of RXIP2 pin of the exchanger chip U8,11 foot of RXIN2 pin, TXOP2 pin
9 feet, the connection of 10 foot of TXON2 pin, 1 foot of VDD pin of the PSE chip U2 are supplied with the first of the D.C. regulated power supply respectively
Electric end DVDD3.3V, the first end of the eleventh resistor R17, the connection of the first end of the 17th capacitor C8, the 17th electricity
Hold C8 second end ground connection, 2 foot of RESET pin of the PSE chip U2 respectively with the second end of the eleventh resistor R17 and
The first end of the key switch S1 connects, the second end ground connection of the key switch S2, the VPWR pin of the PSE chip U2
28 feet are connect with the first end of the feeder ear+48V of the PD circuit and the 18th capacitor C9 respectively, the 18th capacitor
The second end of C9 is grounded, and 4 foot of grid of 21 foot of GATE2 pin of the PSE chip U2 and the second power transistor Q1 connect
It connects, 20 foot of DRAIN2 pin of the PSE chip U2 is connect with the first end of the twelfth resistor R18, the 12nd electricity
Hinder the second end drain electrode 5,6,7,8 with the anode of the third diode D2, the second power transistor Q1 respectively of R18
10 foot of the first electric power input pin connection of foot, the first end of the 19th capacitor C10, the third network transformer U3,
The cathode of the third diode D2 feeder ear+48V with the second end of the 19th capacitor C10 and the PD circuit respectively
Connection, 19 foot of SEN2 pin of the PSE chip U2 are connect with the first end of the thirteenth resistor R34, the 13rd electricity
Hinder R34 second end respectively with 1,2,3 foot of source electrode, the 14th resistance R35 and the tenth of the second power transistor Q1
The first end of five resistance R44 connects, and is grounded after the second end connection of the 14th resistance R35 and the 15th resistance R44, described
15 foot of the second electric power input pin of third network transformer U3 is connect with the feeder ear+48V of the PD circuit, the PSE core
24 foot of SHTDWN pin of piece U2 is connect with the first feeder ear DVDD3.3V of the D.C. regulated power supply.
Specifically, PSE circuit generates PoE standard electric signal using TPS23861 (U2) chip, wherein U2 and Q1 composition is supplied
Electric system is being mixed into power supply signal in network data signals by H1188NL (U3), and finally by P2, this network interface is inserted
The PoE network signal of seat one standard of output.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of networking power supply unit for camera characterized by comprising receiving end PD circuit, feeder ear PSE electricity
Road, direct current regulation circuit and interchanger；
The PD circuit is connect with the PSE circuit, the direct current regulation circuit and the interchanger respectively, the DC voltage-stabilizing
Circuit is connect with camera and the interchanger respectively, and the interchanger is connect with the camera and the PSE circuit respectively；
The PD circuit is used for externally input active Ethernet PoE Signal separator into partial power and network data part,
The direct current regulation circuit for after the partial power is converted into the camera and the power supply for exchange, it is described
Interchanger is used to carry out data exchange with the camera and the PSE circuit, and the PSE circuit is used for the partial power
PoE signal is mixed into the network data of interchanger input and is exported.
2. the apparatus according to claim 1, which is characterized in that the direct current regulation circuit includes for being the interchanger
The D.C. regulated power supply of power supply and for for the camera and the D.C. regulated power supply power supply Switching Power Supply；
The Switching Power Supply is connect with the PD circuit, camera and the D.C. regulated power supply respectively, the DC voltage-stabilizing electricity
Source is also connect with the interchanger.
3. the apparatus of claim 2, which is characterized in that the PD circuit includes the first socket, rectifier bridge, the first electricity
Appearance, the second capacitor, third capacitor, first diode, the second diode, first resistor, second resistance, 3rd resistor, the first function
Rate transistor, receiving end PD control device and first network transformer；
The first signal input pin, second signal input pin, the first signal output pin and the second letter of first socket
Number output pin respectively with the first signal input pin of the first network transformer, second signal input pin, the first letter
Number output pin is connected with second signal output pin,
First data-out pin of the first network transformer, the second data-out pin, the first data output pins and
Second data output pins are connect with the interchanger, the first electric power output pin of the first network transformer and second
Electric power output pin is correspondingly connected with the first input end of the rectifier bridge and the second input terminal respectively,
First output end of the rectifier bridge respectively with the first end of the first capacitor, the first end of the second capacitor, first electricity
The first end of resistance, the first end of third capacitor, the first end of second resistance, the anode of first diode, PD control device VDD draw
Foot is connected with the feeder ear of PD circuit,
The second end of the first resistor is connect with the DEN pin of the PD control device, the second end difference of the third capacitor
It is connect with the source electrode of the RTN pin of the PD control device, the anode of the second diode and the first power transistor, the described 2nd 2
The cathode of the pole pipe grid with the CDB pin of the PD control device, the second end of second resistance and the first power transistor respectively
Connection, the grounded drain of first power transistor, the second output terminal of the rectifier bridge respectively with the first capacitor, the
One diode, the second end of the second capacitor, the first end of 3rd resistor, the VSS pin of the PD control device and PWPD pin connect
It connects, the second end of the 3rd resistor is connect with the CLS pin of the PD control device.
4. device according to claim 3, which is characterized in that the Switching Power Supply includes the 4th capacitor, the 5th capacitor, the
Six capacitors, the 7th capacitor, the 8th capacitor, the 9th capacitor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th electricity
Resistance, the 9th resistance, third diode, the first inductance and the first voltage-stablizer；
The first end of 4th capacitor first end and the first voltage-stablizer with the feeder ear of the PD circuit, the 4th resistance respectively
VIN pin connection, the second end of the 4th capacitor respectively with the first end of the 5th resistance, the 5th capacitor first
End, the first end of the 6th capacitor, the first end of the 7th capacitor, the first end of the 6th resistance, the first end of the 7th resistance, the 8th electricity
The GND pin of the first end of appearance and the first voltage-stablizer connection, the second end of the 4th resistance respectively with the 5th resistance
Second end connected with the EN pin of the first voltage-stablizer, the second end of the 5th capacitor respectively with the 8th resistance first
End is connected with the COMP pin of the first voltage-stablizer, and the second end of the 8th resistance is connect with the second end of the 6th capacitor,
The second end of 7th capacitor is connect with the SS/TR pin of first voltage-stablizer, the second end of the 6th resistance and institute
State the RT/CLK pin connection of the first voltage-stablizer, the second end of the 7th resistance VSENSE with first voltage-stablizer respectively
The connection of the first end of pin and the 9th resistance, the second end of the 9th resistance respectively with the first end of first inductance, the
The second end of eight capacitors is connected with the feeder ear of Switching Power Supply, the second end of first inductance respectively with the three or two pole
The first end of the cathode of pipe, the PH pin of the first voltage-stablizer and the 9th capacitor connects, the plus earth of the third diode, institute
The second end for stating the 9th capacitor is connect with the BOOT pin of first voltage-stablizer.
5. device according to claim 4, which is characterized in that the D.C. regulated power supply includes the tenth capacitor, the 11st
Capacitor, the 12nd capacitor, the second inductance and the second voltage-stablizer；
The first end of tenth capacitor is connect with the Vin pin of the feeder ear of the Switching Power Supply and the second voltage-stablizer respectively,
The second end of tenth capacitor first end and the 12nd with the GND pin of second voltage-stablizer, the 11st capacitor respectively
Capacitor first end connection after be grounded, the second end of the 11st capacitor respectively with the Vout pin of second voltage-stablizer,
First feeder ear of the D.C. regulated power supply is connected with the first end of second inductance, the second end difference of the 12nd capacitor
It is connect with the second feeder ear of the second end of second inductance and the D.C. regulated power supply.
6. device according to claim 5, which is characterized in that the interchanger includes the second socket, the second network transformation
Device, exchanger chip, the 13rd capacitor, the 14th capacitor, the 15th capacitor, the 16th capacitor, crystal oscillator and the tenth resistance；
The RXIP1 pin of the exchanger chip, RXIN1 pin, TXON1 pin, TXOP1 pin respectively with the first network
The first data-out pin, the second data-out pin, the first data output pins and the second data output pins of transformer
Connection, TXOP2 pin, TXON2 pin, RXIP2 pin, the RXIN2 pin of the exchanger chip connect with the PSE circuit
Connect, TXOP3 pin, TXON3 pin, RXIP3 pin and the RXIN3 pin of the exchanger chip respectively with second network
The first data output pins, the second data output pins, the first data-out pin and the second data-out pin of transformer
Connection, the first signal input pin of second network transformer, second signal input pin, the first signal output pin and
Second signal output pin is believed with the first signal input pin of second socket, second signal input pin, first respectively
Number output pin is connected with second signal output pin, the V33IN pin and DVDDH pin of the exchanger chip with it is described
First feeder ear of D.C. regulated power supply connects, the AVDDHPLL pin and AVDDH pin of the exchanger chip with it is described
Second feeder ear of D.C. regulated power supply connects, the V33IN pin of the exchanger chip also respectively with the 13rd capacitor,
The first end of 14th capacitor connects, and second end, the second end of the 14th capacitor of the 13rd capacitor are grounded, the friendship
The X0 pin of chip of changing planes is connect with the first end of the crystal oscillator and the 15th capacitor respectively, the second end of the 15th capacitor
Ground connection, the X1 pin of the exchanger chip are connect with the first end of the second end of the crystal oscillator and the 16th capacitor respectively,
The second end of 16th capacitor is grounded.
7. device according to claim 6, which is characterized in that the PSE circuit includes third socket, third network transformation
Device, the second power transistor, PSE chip, eleventh resistor, twelfth resistor, thirteenth resistor, the 14th resistance, the 15th
Resistance, the 17th capacitor, the 18th capacitor, the 19th capacitor, third diode and key switch；
The first signal input pin, second signal input pin, the first signal output pin and the second letter of the third socket
Number output pin respectively with the first signal input pin of the third network transformer, second signal input pin, the first letter
Number output pin is connected with second signal output pin, the first data-out pin of the third network transformer, the second number
According to input pin, the first data output pins and the second data output pins respectively with the RXIP2 pin of the exchanger chip,
RXIN2 pin, TXOP2 pin, TXON2 pin connection, the VDD pin of the PSE chip respectively with the D.C. regulated power supply
The first feeder ear, the first end of the eleventh resistor, the connection of the first end of the 17th capacitor, the of the 17th capacitor
Two ends ground connection, the RESET pin of the PSE chip respectively with the second end of the eleventh resistor and the key switch the
One end connection, the second end ground connection of the key switch, the power supply with the PD circuit respectively of the VPWR pin of the PSE chip
End is connected with the first end of the 18th capacitor, the second end ground connection of the 18th capacitor, the GATE2 of the PSE chip
Pin is connect with the grid of second power transistor, DRAIN2 pin and the twelfth resistor of the PSE chip
First end connection, the second end of the twelfth resistor respectively with the anode of the third diode, second power crystal
The drain electrode of pipe, the first electric power input pin connection of the first end of the 19th capacitor, the third network transformer, it is described
The cathode of third diode is connect with the feeder ear of the second end of the 19th capacitor and the PD circuit respectively, the PSE
The SEN2 pin of chip is connect with the first end of the thirteenth resistor, and the second end of the thirteenth resistor is respectively with described
The first end of the source electrode of two power transistors, the 14th resistance and the 15th resistance connects, the 14th resistance and the
It is grounded after the second end connection of 15 resistance, the second electric power input pin and the PD circuit of the third network transformer
Feeder ear connection, the SHTDWN pin of the PSE chip are connect with the first feeder ear of the D.C. regulated power supply.
8. device according to claim 7, which is characterized in that the PD circuit, PSE circuit, direct current regulation circuit and friendship
It changes planes and is set on same circuit board.
9. device according to claim 1-8, which is characterized in that it further include PoE interchanger, the PoE exchange
Machine and the PD circuit connection.
10. a kind of camera device, which is characterized in that supplied including camera and such as the described in any item networkings of claim 1-9
Electric installation.
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| CN201810213176.3A CN109257533B (en) | 2018-03-15 | 2018-03-15 | Networking power supply device for camera and camera equipment |
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| CN201810213176.3A CN109257533B (en) | 2018-03-15 | 2018-03-15 | Networking power supply device for camera and camera equipment |
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| CN109257533B (en) | 2024-03-26 |
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