CN201122963Y - Device for power supply by twisted pair line and implementing multi-machine digital communication - Google Patents
Device for power supply by twisted pair line and implementing multi-machine digital communication Download PDFInfo
- Publication number
- CN201122963Y CN201122963Y CNU2007200167861U CN200720016786U CN201122963Y CN 201122963 Y CN201122963 Y CN 201122963Y CN U2007200167861 U CNU2007200167861 U CN U2007200167861U CN 200720016786 U CN200720016786 U CN 200720016786U CN 201122963 Y CN201122963 Y CN 201122963Y
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- circuit
- twisted
- power supply
- pair feeder
- communication
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Abstract
The utility model relates to a device which performs power supply and realizes multi-machine digital communication through utilizing a twisted pair wire. The device is provided with a power supply circuit and a communication circuit, and is characterized in that a first and a second inductances are respectively connected in series on each wire of the twisted pair wire and then connected with a power supply after being connected in parallel with a first high frequency feed through capacitance, the power supply circuit is connected in parallel on the twisted pair wire through a high frequency stopping circuit, and the communication circuit is connected in parallel on the twisted pair wire through an isolated capacitance. The invented device can simultaneously perform multi-machine data communication on the twisted pair wire which is used for supplying power for an electric circuit, reduce the wiring quantity as well as the material and the construction costs, and in particular accomplish the electric circuit application with the data communication at the application places where both the wiring and the communication are limited or a pair of prior twisted pair wire can not lay the communication circuit.
Description
Technical field
The present invention relates to a kind of device that has power supply and communication function concurrently, specifically a kind of device that utilizes the twisted-pair feeder power supply and realize multi-machine digital communication.
Background technology
As everyone knows, at present electric room communicates with one another and all is to use certain communication bus and agreement to carry out communication, when a plurality of circuit units being arranged and be distributed in apart from each other regional, arrange power line and communication line respectively.But some site of deployment can't carry out rewiring or since spatial limitation power circuit and communication line can't be arranged simultaneously.
Summary of the invention
At weak point of the prior art, the technical problem to be solved in the present invention provides a kind of device that utilizes the twisted-pair feeder power supply and realize multi-machine digital communication, is embodied as power electronics and carries out multi-machine digital communication by twisted-pair feeder.
For addressing the above problem, the technical solution used in the present invention is:
Have power circuit and communicating circuit, the 1st, 2 inductance of connecting respectively on every circuit of twisted-pair feeder, be connected with power supply behind the 1st high-frequency bypass capacitor in parallel again, described power circuit is parallel on the twisted-pair feeder by the high-frequency cut-off circuit, and communicating circuit is parallel on the twisted-pair feeder by isolation capacitance.
Described high-frequency cut-off circuit is made up of the 3rd, 4 inductance and the 2nd high-frequency bypass capacitor, and wherein an end of the 3rd, 4 inductance is connected to twisted-pair feeder respectively, links to each other with the input of power circuit behind the other end the 1st high-frequency bypass capacitor in parallel; Be provided with the protection diode between power circuit input and the 2nd high-frequency bypass capacitor; Between communicating circuit and isolation capacitance, be respectively equipped with transition and suppress diode; Be connected with the two ends difference shunt terminal resistance of the twisted-pair feeder of power supply communication device.
The present invention has following beneficial effect and advantage:
1. apparatus of the present invention can carried out the multimachine data communication simultaneously on the twisted-pair feeder of power electronics, can reduce wiring quantity and reduce material and construction cost, especially finish the applications of electronic circuitry that has data communication in the application scenario of connecting up and construction is restricted or existing a pair of twisted-pair feeder can't lay communication line.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is that twisted-pair feeder of the present invention connects topology diagram.
Embodiment
Present embodiment uses the unit that articulates that power supply of the present invention and communication contain MCU to be example with needs.As shown in Figure 1, 2, VDDM and VSSM are the incoming ends of power supply, the 1st high-frequency bypass capacitor CM in parallel makes the communication signal that transmits on twisted-pair feeder 1 can not be powered power supply and absorbs after the 1st, 2 inductance L M1, LM2 are connected with BUSB with two lead BUSA of twisted-pair feeder 1.
Apparatus of the present invention comprise power circuit 4 and communicating circuit 3, the two one of composition articulates the unit and is mounted on the above-mentioned twisted-pair feeder 1, wherein power circuit 4 is in parallel with twisted-pair feeder 1 by the high-frequency cut-off circuit that the 3rd, 4 inductance inductance L 1, inductance L 2 and the 2nd high-frequency bypass capacitor C3 form, and the communication signal of transmission on twisted-pair feeder 1 can not absorbed by this power circuit 4 that articulates in the unit.Integrated regulator U2 in the power circuit 4 provides stable working power through VCC end for the integrated circuit U1 in the communicating circuit 3 and microprocessor MCU; Be provided with protection diode D1 between the input of integrated regulator U2 and the 2nd high-frequency bypass capacitor C3, can guarantee that twisted-pair feeder 1 can not connect the voltage stabilizing circuit part of damaging on the contrary in the power circuit 4 because of polarity; Capacitor C 4, C5, C6 play the effect of filtering and accumulation of energy; End points VDD and VSS are the power output ends that twisted-pair feeder 1 has been isolated communication signal.
Described communicating circuit 3 is parallel on the twisted-pair feeder 1 by isolation capacitance C1, C2, integrated circuit U1 in the communicating circuit 3 is the integrated circuit (as RS485, RS422 bus driver receiving chip) with differential driving and reception, is used to finish communication data conversion and the data transmission on the twisted-pair feeder 1 of microprocessor MCU and receive; Isolation capacitance C1, C2 have isolated the power supply DC component on the twisted-pair feeder 1, only allow communication signal feed-in and output; Node between integrated circuit U1 and isolation capacitance C1, C2 suppresses diode ZD1, ZD2 ground connection by transition respectively, and two-way transition suppresses diode ZD1, ZD2 can absorb the peak voltage that causes because of inductance and electric capacity on the twisted-pair feeder 1.
As shown in Figure 2, present embodiment needs to use apparatus of the present invention of twisted-pair feeder 1 communication and power supply to be connected on the twisted-pair feeder 1 with a plurality of, when the 1st unit AP-1 need be carried out communication with the 2nd unit AP-2, the 1st unit AP-1 will need the data of communication to be sent on the twisted-pair feeder 1 by integrated circuit U1 in the communicating circuit 3, and the 2nd unit AP-2 receives these data by integrated circuit U1; Also be performed such communication between other each unit.Be connected with the two ends shunt terminal resistance 2 respectively of the twisted-pair feeder 1 of power supply communication device, in order to alleviate because the element of the reflection interference that distributed capacitance that twisted-pair feeder exists and distributed inductance produce.
Claims (5)
1. device that utilizes twisted-pair feeder power supply and realize multi-machine digital communication, have power circuit and communicating circuit, it is characterized in that: the 1st, 2 inductance (LM1, LM2) of connecting respectively on every circuit of twisted-pair feeder, the 1st high-frequency bypass capacitor in parallel (CM) back is connected with power supply again, described power circuit (4) is parallel on the twisted-pair feeder (1) by the high-frequency cut-off circuit, and communicating circuit (3) is parallel on the twisted-pair feeder (1) by isolation capacitance (C1, C2).
2. by the described device that utilizes the twisted-pair feeder power supply and realize multi-machine digital communication of claim 1, it is characterized in that: described high-frequency cut-off circuit is made up of the 3rd, 4 inductance (L1, L2) and the 2nd high-frequency bypass capacitor (C3), wherein an end of the 3rd, 4 inductance (L1, L2) is connected to twisted-pair feeder (1) respectively, and the other end the 1st high-frequency bypass capacitor in parallel (C3) back links to each other with the input of power circuit (4).
3. by the described device that utilizes the twisted-pair feeder power supply and realize multi-machine digital communication of claim 2, it is characterized in that: be provided with protection diode (D1) between power circuit (4) input and the 2nd high-frequency bypass capacitor (C3).
4. by the described device that utilizes the twisted-pair feeder power supply and realize multi-machine digital communication of claim 1, it is characterized in that: between communicating circuit (3) and isolation capacitance (C1, C2), be respectively equipped with transition and suppress diode (ZD1, ZD2).
5. by the described device that utilizes the twisted-pair feeder power supply and realize multi-machine digital communication of claim 1, it is characterized in that: the two ends difference shunt terminal resistance (2) that is connected with the twisted-pair feeder (1) of power supply communication device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200167861U CN201122963Y (en) | 2007-12-12 | 2007-12-12 | Device for power supply by twisted pair line and implementing multi-machine digital communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200167861U CN201122963Y (en) | 2007-12-12 | 2007-12-12 | Device for power supply by twisted pair line and implementing multi-machine digital communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201122963Y true CN201122963Y (en) | 2008-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200167861U Expired - Lifetime CN201122963Y (en) | 2007-12-12 | 2007-12-12 | Device for power supply by twisted pair line and implementing multi-machine digital communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201122963Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459522B (en) * | 2007-12-12 | 2011-04-20 | 沈阳芯源微电子设备有限公司 | Apparatus for power supply by twisted pair line and multi-machine digital communication implementation |
-
2007
- 2007-12-12 CN CNU2007200167861U patent/CN201122963Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459522B (en) * | 2007-12-12 | 2011-04-20 | 沈阳芯源微电子设备有限公司 | Apparatus for power supply by twisted pair line and multi-machine digital communication implementation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080924 Effective date of abandoning: 20071212 |