CN104850024A

CN104850024A - Current loop communication and power supply control circuit of air conditioner and outdoor unit and method thereof

Info

Publication number: CN104850024A
Application number: CN201510239504.3A
Authority: CN
Inventors: 鲍殿生; 陈建昌
Original assignee: Midea Group Co Ltd; Guangdong Midea Refrigeration Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2015-05-12
Filing date: 2015-05-12
Publication date: 2015-08-19
Anticipated expiration: 2035-05-12
Also published as: CN104850024B

Abstract

The present invention belongs to the field of power supply control technology and provides a current loop communication and power supply control circuit of an air conditioner and an outdoor unit and a method thereof. According to the current loop communication and power supply control circuit, after the outdoor unit is powered, a current loop wake-up control module controls the second output end of a power supply circuit to output power supply such that the main controller and other load in the outdoor unit can be powered to work, when the air conditioner is shut down, the main controller controls the load in the outdoor unit to stop working, the current loop wake-up control module controls the second output end of the power supply circuit to stop outputting power supply, thus the power supply of the main controller and other load of the outdoor unit is cut, so the power consumption of the outdoor unit in standby is reduced, and the standby power of the air conditioner can be reduced to satisfy the requirement of low energy consumption.

Description

The current ring communication of air conditioner and off-premises station thereof and power-supplying circuit and method

Technical field

The invention belongs to power supply control technical field, particularly relate to the current ring communication of a kind of air conditioner and off-premises station thereof and power-supplying circuit and method.

Background technology

At present, because countries in the world are progressively paid attention to environmental issue, constantly release the standby energy consumption requirement of higher standard, therefore each household electrical appliances producer is all being devoted to the standby energy consumption reducing household appliances.For air conditioner; because it generally comprises indoor set and off-premises station; air conditioner normally provides power supply to off-premises station by indoor set; if when carrying out low-power consumption standby design to air conditioner; usually indoor set can be adopted to carry out the mode of dump to off-premises station; to make the complete power down of off-premises station, thus the stand-by power consumption of off-premises station can be reduced.

But, if air conditioner provides power supply (namely the supply socket of air conditioner is in outdoor) by off-premises station, load in indoor set is (as indoor fan, stepper motor) provide power supply by off-premises station, then indoor set and off-premises station pass through live wire, zero line, ground wire and signal wire connect, indoor set and off-premises station are kept in communication by existing current-loop communication circuit, the master controller of indoor set is the main control part of air conditioner, the load of indoor set and off-premises station is all controlled by the master controller of indoor set, the control signal of indoor set load is directly sent by the master controller of indoor set, and off-premises station load is (as outdoor electric-controlled plate, compressor, four-way valve, outdoor fan) control signal be then the master controller being sent to off-premises station by the master controller of indoor set by current-loop communication circuit, controlled the operation of off-premises station load again according to control signal by the master controller of off-premises station.Because the complete machine power supply of air conditioner is provided by off-premises station, when complete machine is in holding state, the load in off-premises station is still in live line work state, air conditioner therefore can be caused high because of standby power, and cannot meet low energy consumption requirement.

Summary of the invention

The object of the present invention is to provide a kind of current ring communication and power-supplying circuit of air-conditioner outdoor unit, be intended to solve existing air conditioner reason off-premises station and power and when standby, occur that standby power is high and the problem of low energy consumption requirement cannot be met.

The present invention realizes like this, a kind of current ring communication of air-conditioner outdoor unit and power-supplying circuit, it comprises current ring communication module and signal backflow module, and the master controller in described off-premises station carries out electric current loop communication by the main control chip of the current loop communication circuit in described current ring communication module, the backflow of described signal module, signal wire, live wire or zero line, air conditioner room unit and described indoor set; First output terminal and second output terminal of the power circuit in described off-premises station all export power supply, and the power supply that the load in described master controller and described off-premises station exports according to the second output terminal of described power circuit works on power;

Described current ring communication and power-supplying circuit also comprise electric current loop and wake control module up;

The signal input part that described electric current loop wakes control module up and the first signal output part are connected signal output part and the signal input part of described current ring communication module respectively, the secondary signal output terminal that described electric current loop wakes control module up connects the input end of described signal backflow module, the power end that described electric current loop wakes control module up connects the first output terminal of described power circuit, the power control terminal that described electric current loop wakes control module up connects the controlled end of described power circuit, what the controlled end that described electric current loop wakes control module up connected described master controller wakes control end up, signal wire and live wire or signal wire and zero line are as electric current loop communication wire,

After described off-premises station powers on, when described current loop communication circuit is to described current ring communication module dispatcher's office internal current communication signal, described electric current loop wakes the second output terminal that control module controls described power circuit according to the indoor electric current communication signal that described current ring communication module receives up and exports described power supply, and described indoor electric current communication signal is back to signal wire by described signal backflow module, described master controller wake up control end export control signal make described electric current loop wake up control module stop output signal to described signal backflow module, after the described control signal of output, the transmitting terminal of described master controller refluxes module dispatcher's office outer current communication signal to signal wire by described current ring communication module and described signal, described electric current loop wakes control module up and exports described power supply according to the second output terminal of the described power circuit of described outside electric current communication signal continuation control being back to described current ring communication module,

In the process of described electric current loop communication, if described main control chip sends off signal to described master controller, load then in off-premises station described in described main controller controls quits work, described current ring communication module no signal after output described off signal to described master controller exports described electric current loop to and wakes control module up, and described electric current loop wakes control module up and quits work to make the second output terminal of described power circuit to stop exporting described power supply.

Present invention also offers a kind of air conditioner, it comprises indoor set and off-premises station, and has above-mentioned current ring communication and power-supplying circuit in described off-premises station.

Present invention also offers a kind of current ring communication based on above-mentioned current ring communication and power-supplying circuit and method for controlling power supply, it comprises the following steps:

Power at off-premises station, and off-premises station and indoor set are when carrying out electric current loop communication, the main control chip that the master controller in described off-premises station is waken up in the electric current communication loop and described indoor set that the current loop communication circuit in control module and described indoor set forms by refluxed by current ring communication module, signal module, signal wire, live wire or zero line, electric current loop carries out electric current loop communication;

In the process of described electric current loop communication, if described main control chip sends off signal to described master controller by described electric current communication loop, then the load in off-premises station described in described main controller controls quits work;

Described current ring communication module no signal after output described off signal to described master controller exports described electric current loop to and wakes control module up, and described electric current loop wakes control module up and quits work to make the second output terminal of described power circuit to stop exporting described power supply.

The present invention comprises current ring communication module by adopting in air-conditioner outdoor unit, signal backflow module and electric current loop wake current ring communication and the power-supplying circuit of control module up, after off-premises station powers on, the second output terminal output power supply that control module controls power circuit is waken up by electric current loop, work on power to enable the master controller in off-premises station and other loads, and after indoor set sends off signal to off-premises station, load in main controller controls off-premises station quits work, and electric current loop wake up control module quit work (namely indoor set sends after off signal to off-premises station) stop exporting power supply to make the second output terminal of power circuit, thus the power supply cut off the master controller in off-premises station and other loads, with make off-premises station standby or surprisingly disconnect communication with indoor set and safety shutdown time the lower power consumption that consumes, and then the standby power that can reduce air conditioner is to meet low energy consumption requirement.

Accompanying drawing explanation

Fig. 1 is the function structure chart of the current ring communication that provides of the embodiment of the present invention and power-supplying circuit;

Fig. 2 is another function structure chart of the current ring communication that provides of the embodiment of the present invention and power-supplying circuit;

Fig. 3 is the another function structure chart of the current ring communication that provides of the embodiment of the present invention and power-supplying circuit;

Fig. 4 is the realization flow figure of the current ring communication that provides of the embodiment of the present invention and method for controlling power supply;

Fig. 5 is another realization flow figure of the current ring communication that provides of the embodiment of the present invention and method for controlling power supply;

Fig. 6 is the another realization flow figure of the current ring communication that provides of the embodiment of the present invention and method for controlling power supply;

Fig. 7 is a kind of exemplary circuit structural drawing of the current ring communication shown in Fig. 1 and power-supplying circuit;

Fig. 8 is a kind of exemplary circuit structural drawing of the current ring communication shown in Fig. 1 and power-supplying circuit;

Fig. 9 is a kind of exemplary circuit structural drawing of the current ring communication shown in Fig. 1 and power-supplying circuit;

Figure 10 is the current ring communication shown in Fig. 1 and power-supplying circuit function structure chart in actual applications;

Figure 11 is the receiving end of master controller and the signal waveforms of transmitting terminal of off-premises station involved by the embodiment of the present invention;

Figure 12 is a kind of exemplary circuit structural drawing of the current ring communication shown in Fig. 2 and power-supplying circuit;

Figure 13 is a kind of exemplary circuit structural drawing of the current ring communication shown in Fig. 2 and power-supplying circuit;

Figure 14 is a kind of exemplary circuit structural drawing of the current ring communication shown in Fig. 2 and power-supplying circuit;

Figure 15 is the current ring communication shown in Fig. 2 and power-supplying circuit function structure chart in actual applications;

Figure 16 is a kind of exemplary circuit structural drawing of the current ring communication shown in Fig. 3 and power-supplying circuit;

Figure 17 is a kind of exemplary circuit structural drawing of the current ring communication shown in Fig. 3 and power-supplying circuit;

Figure 18 is a kind of exemplary circuit structural drawing of the current ring communication shown in Fig. 3 and power-supplying circuit;

Figure 19 is the current ring communication shown in Fig. 3 and power-supplying circuit function structure chart in actual applications;

Figure 20 is the structural representation comprising the air conditioner of electric current loop Voltage stabilizing module of corresponding diagram 1;

Figure 21 is the structural representation comprising the air conditioner of electric current loop Voltage stabilizing module of corresponding diagram 2;

Figure 22 is the structural representation comprising the air conditioner of electric current loop Voltage stabilizing module of corresponding diagram 3;

Figure 23 is another structural representation comprising the air conditioner of electric current loop Voltage stabilizing module of corresponding diagram 1;

Figure 24 is another structural representation comprising the air conditioner of electric current loop Voltage stabilizing module of corresponding diagram 2;

Figure 25 is another structural representation comprising the air conditioner of electric current loop Voltage stabilizing module of corresponding diagram 3;

Figure 26 is the exemplary construction figure of the air conditioner shown in Figure 20;

Figure 27 is the exemplary construction figure of the air conditioner shown in Figure 21;

Figure 28 is the exemplary construction figure of the air conditioner shown in Figure 22;

Figure 29 is the exemplary construction figure of the air conditioner shown in Figure 23;

Figure 30 is the exemplary construction figure of the air conditioner shown in Figure 24;

Figure 31 is the exemplary construction figure of the air conditioner shown in Figure 25.

Embodiment

In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

In embodiments of the present invention, air conditioner comprises indoor set and off-premises station, and indoor set has main control chip, current loop communication circuit and load, and off-premises station has master controller, power circuit and load, and has current ring communication and power-supplying circuit in off-premises station.

As shown in Figure 1, current ring communication and power-supplying circuit 100 comprise current ring communication module 101 and signal and to reflux module 102, and the master controller 200 in off-premises station carries out electric current loop communication by the current loop communication circuit 500 (inner structure as shown in Figure 1) in current ring communication module 101, signal backflow module 102, signal wire S, live wire L or zero line N, air conditioner room unit with the main control chip 600 of indoor set; First output terminal VCC1 of the power circuit 300 in off-premises station and the second output terminal VCC2 all exports power supply (power supply that the first output terminal VCC1 and the second output terminal VCC2 exports possesses identical voltage), and the power supply that the load in master controller 200 and off-premises station exports according to the second output terminal VCC2 of power circuit 300 works on power.

Wherein, internal transmitting terminal and the internal receiving end of current ring communication module 101 are connected receiving end RX and the transmitting terminal TX of master controller 200 respectively, the external transmitting terminal of current ring communication module 101 and external receiving end be the input end of connection signal backflow module 102 and live wire L or the input end of connection signal backflow module 102 and zero line N respectively respectively, the output terminal connection signal line S of signal backflow module 102, the power end of current ring communication module 101 connects the first output terminal VCC1 or the second output terminal VCC2 of power circuit 300.The primary power of off-premises station connects live wire L, zero line N and ground wire GND.

Current ring communication and power-supplying circuit 100 also comprise electric current loop and wake control module 103 up.

The signal input part that electric current loop wakes control module 103 up and the first signal output part and secondary signal output terminal are connected signal output part and the signal input part of current ring communication module 101 respectively, electric current loop wakes the input end of the secondary signal output terminal connection signal backflow module 102 of control module 103 up, electric current loop wakes the first output terminal VCC1 of the power end connection power circuit 300 of control module 103 up, electric current loop wakes the controlled end of the power control terminal connection power circuit 300 of control module 103 up, electric current loop wake up control module 103 controlled end connect master controller 200 wake control end P1 up, signal wire S and live wire L or signal wire S and zero line N is as electric current loop communication wire.

After off-premises station powers on, when current loop communication circuit 500 is to current ring communication module 101 dispatcher's office internal current communication signal, electric current loop wakes control module 103 controls power circuit 300 the second output terminal VCC2 output power supply according to the indoor electric current communication signal that current ring communication module 101 receives up, and indoor electric current communication signal is back to signal wire S by signal backflow module 102; Master controller 200 wake up control end P1 export control signal make electric current loop wake up control module 103 stop output signal to signal backflow module 102, after the above-mentioned control signal of output, the transmitting terminal TX of master controller 200 refluxes module 102 transmission output outside electric current communication signal to signal wire S by current ring communication module 101 and signal, and electric current loop wakes control module 103 continues to control power circuit 300 the second output terminal VCC2 output power supply according to the outside electric current communication signal being back to current ring communication module 101 up.

For above-mentioned after off-premises station powers on, the course of work of current ring communication and power-supplying circuit 100 is specific as follows:

After off-premises station powers on, when current loop communication circuit 500 by live wire L or zero line N dispatcher's office internal current communication signal to current ring communication module 101 time, current ring communication module 101 exports indoor electric current communication signal to master controller 101 respectively and electric current loop wakes control module 103 up, electric current loop wakes control module 103 up and indoor electric current communication signal is back to signal wire S by signal backflow module 102, and electric current loop wakes control module 103 controls power circuit 300 the second output terminal VCC2 output power supply according to indoor electric current communication signal up, master controller 200 wake up control end P1 export control signal make electric current loop wake up control module 103 stop output signal to signal backflow module 102, after this control signal of output, the transmitting terminal TX of master controller 200 exports outside electric current communication signal, current ring communication module 101 exports outside electric current communication signal to signal wire S by signal backflow module 102, and the outside electric current communication signal refluxed by live wire L or zero line N exports electric current loop to wakes control module 103 up, electric current loop wakes control module 103 continues to control power circuit 300 the second output terminal VCC2 output power supply according to this outside electric current communication signal up, and outside electric current communication signal is back to current ring communication module 101, master controller 200 is thence through by current ring communication module 101, signal backflow module 102, signal wire S, live wire L or zero line N, the main control chip 600 that electric current loop wakes up in the electric current communication loop and indoor set that control module 103 and current loop communication circuit 500 form carries out electric current loop communication.

In the process of above-mentioned electric current loop communication, if main control chip 600 sends off signal to master controller 200, then master controller 200 load controlled in off-premises station quits work (specifically load quits work according to default " shut " mode"), current ring communication module 101 no signal after output off signal to master controller 200 exports electric current loop to and wakes control module 103 up, then electric current loop wakes the second output terminal VCC2 stopping output power supply that control module 103 quits work to make power circuit 300 up.Wherein, above-mentioned default " shut " mode" specifically refers to different loads required closing sequence followed when closing, and such as, under air conditioner is in refrigeration mode, when master controller 200 controls compressor cut out, can controls four-way valve simultaneously and close; And under if air conditioner is in heating mode, then master controller 200 needs to cut out at control compressor, and time delay a period of time (as 2 minutes) controls four-way valve again closes, can avoid like this under heating mode because of while close compressor and four-way valve and cause air-conditioning duct internal pressure uneven and damage the problem of compressor.

Moreover as shown in Figure 2, the control end P1 that wakes up of master controller 200 is also connected with the emergency flight control end of power circuit 300.In the process of above-mentioned electric current loop communication, when electric current loop communication wire disconnects, current ring communication module 101 no signal exports electric current loop to and wakes control module 103 up, electric current loop wakes control module 103 up and quits work, when not receiving indoor electric current communication signal from the receiving end RX of master controller 200, the control end P1 that wakes up of master controller 200 continues to export Continuity signal to control the second output terminal VCC2 continuation output power supply of power circuit 300.

If the time that master controller 200 does not receive indoor electric current communication signal reaches preset time period, then master controller 200 load controlled in off-premises station quits work (specifically load quits work according to default " shut " mode"), and the control end P1 that wakes up of master controller 200 exports the second output terminal VCC2 stopping output power supply that shutdown signal controls power circuit 300.

And do not disconnect at electric current loop communication wire, and above-mentioned electric current loop communication is when normally carrying out, the the second output terminal VCC2 controlling power circuit 300 except being waken up control module 103 by electric current loop exports power supply, master controller 200 wake up control end P1 also sustainable output Continuity signal to power circuit 300 so that when electric current loop communication wire disconnects seamless take over electric current loop wake up control module 103 control power circuit 300 second output terminal VCC2 continue export power supply.

In addition, more as shown in Figure 3, the power control terminal P2 of master controller 200 is connected with the emergency flight control end of power circuit 300.In the process of above-mentioned electric current loop communication, when electric current loop communication wire disconnects, current ring communication module 101 no signal exports electric current loop to and wakes control module 103 up, electric current loop wakes control module 103 up and quits work, when not receiving indoor electric current communication signal from the receiving end RX of master controller 200, the power control terminal P2 of master controller 200 continues to export Continuity signal and continues to export power supply with the second output terminal VCC2 controlling power circuit 300.

If the time that master controller 200 does not receive indoor electric current communication signal reaches preset time period, then master controller 200 load controlled in off-premises station quits work (specifically load quits work according to default " shut " mode"), and the power control terminal P2 of master controller 200 exports the second output terminal VCC2 stopping output power supply that shutdown signal controls power circuit 300.

And do not disconnect at electric current loop communication wire, and above-mentioned electric current loop communication is when normally carrying out, the the second output terminal VCC2 controlling power circuit 300 except being waken up control module 103 by electric current loop exports power supply, the power control terminal P2 of master controller 200 also sustainable output Continuity signal to power circuit 300 so that seamless electric current loop of taking over wakes the second output terminal VCC2 that control module 103 controls power circuit 300 up and continues to export power supply when electric current loop communication wire disconnects.

The embodiment of the present invention comprises current ring communication module 101 by adopting in air-conditioner outdoor unit, signal backflow module 102 and electric current loop wake current ring communication and the power-supplying circuit of control module 103 up, after off-premises station powers on, the second output terminal VCC2 output power supply that control module 103 controls power circuit 300 is waken up by electric current loop, work on power to enable the master controller 200 in off-premises station and other loads, and after indoor set sends off signal to off-premises station, the load that master controller 200 controls in off-premises station quits work according to default " shut " mode", and electric current loop wakes the second output terminal VCC2 stopping output power supply that control module 103 quits work to make power circuit 300 up, thus the power supply cut off the master controller 200 in off-premises station and other loads, the lower power consumption consumed when standby to make off-premises station, and then the standby power that can reduce air conditioner is to meet low energy consumption requirement.In addition, when electric current loop communication wire disconnects, the master controller 200 equally load that can control in off-premises station quits work, and export shutdown signal subsequently to make the second output terminal VCC2 stopping output power supply of power circuit 300, thus make the payload security in off-premises station shut down when communication accidental interruption, and the power supply cut off again after control load shutdown the master controller in off-premises station and other loads, the power consumption of off-premises station can be reduced equally, reduce the standby power of air conditioner to meet low-power consumption requirement.

Based on above-mentioned current ring communication and power-supplying circuit 100, the embodiment of the present invention additionally provides a kind of current ring communication and method for controlling power supply of air-conditioner outdoor unit, and as shown in Figure 4, it comprises the following steps:

S1. power at off-premises station, and off-premises station and indoor set are when carrying out electric current loop communication, the main control chip 600 that the master controller 200 in off-premises station wakes up in the electric current communication loop and indoor set that the current loop communication circuit 500 in control module 103 and indoor set forms thence through refluxed by current ring communication module 101, signal module 102, signal wire S, live wire L or zero line N, electric current loop carries out electric current loop communication;

S2., in the process of electric current loop communication, if main control chip 600 sends off signal to master controller 200 by electric current communication loop, then the load that master controller 200 controls in off-premises station quits work;

S3. current ring communication module 101 no signal after output off signal to master controller 200 exports electric current loop to and wakes control module 103 up, and electric current loop wakes control module 103 up and quits work to make the second output terminal VCC2 of power circuit 300 to stop exporting power supply;

Moreover, the current ring communication shown in corresponding diagram 2 and power-supplying circuit 100, for electric current loop connection disconnect situation, as shown in Figure 5, after step S1, above-mentioned current ring communication and method for controlling power supply further comprising the steps of:

S4., in the process of electric current loop communication, when electric current loop communication wire disconnects, current ring communication module 101 no signal exports electric current loop to and wakes control module 103 up, and electric current loop wakes control module 103 up and quits work;

When S5. not receiving indoor electric current communication signal from the receiving end RX of master controller 200, the control end P1 that wakes up of master controller 200 continues to export Continuity signal to make the second output terminal VCC2 continuation output power supply of power circuit 300;

If the time that S6. master controller 200 does not receive indoor electric current communication signal reaches preset time period, the load that then master controller 200 controls in off-premises station quits work, and the control end P1 that wakes up of master controller 200 exports the second output terminal VCC2 stopping output power supply that shutdown signal controls power circuit 300.

Wherein, step S2 to step S3 normally carries out in electric current loop communication and makes off-premises station enter the process of holding state according to the off signal that indoor set sends, step S4 to step S6 is electric current loop communication accidental interruption and off-premises station is carried out to the process of safety shutdown, two processes are arranged side by side, there is not successively execution relation.

In addition, the current ring communication shown in corresponding diagram 3 and power-supplying circuit 100, for electric current loop connection disconnect situation, as shown in Figure 6, after step S1, above-mentioned current ring communication and method for controlling power supply further comprising the steps of:

S7., in the process of electric current loop communication, when electric current loop communication wire disconnects, current ring communication module 101 no signal exports electric current loop to and wakes control module 103 up, and electric current loop wakes control module 103 up and quits work;

When S8. not receiving indoor electric current communication signal from the receiving end RX of master controller 200, the power control terminal P2 of master controller 200 continues to export Continuity signal and continues to export power supply to make the second output terminal VCC2 of power circuit 300;

If the time that S9. master controller 200 does not receive indoor electric current communication signal reaches preset time period, the load that then master controller 200 controls in off-premises station quits work, and the power control terminal P2 of master controller 200 exports the second output terminal VCC2 stopping output power supply that shutdown signal controls power circuit 300.

Wherein, step S2 to step S3 normally carries out in electric current loop communication and makes off-premises station enter the process of holding state according to the off signal that indoor set sends, step S7 to step S9 is electric current loop communication accidental interruption and off-premises station is carried out to the process of safety shutdown, two processes are arranged side by side, there is not successively execution relation.

For the current ring communication shown in Fig. 1 and power-supplying circuit, the inner structure that the current ring communication module 101 included by it, signal backflow module 102 and electric current loop wake control module 103 up is specific as follows:

As shown in Fig. 7, Fig. 8 and Fig. 9, current ring communication module 101 comprises:

First optocoupler IC1, the second optocoupler IC2, the first resistance R1, the first NPN type triode Q1, the second resistance R2 and the 3rd resistance R3;

The anode of the light emitting diode of the first optocoupler IC1 and negative electrode are respectively external receiving end and the signal output part of current ring communication module 101, the common contact of the collector of the phototriode of the first optocoupler IC1 and the first end of the first resistance R1 is the power end of current ring communication module 101, the internal transmitting terminal of the transmitting of the phototriode of the first optocoupler IC1 very current ring communication module 101, second end of the first resistance R1 connects the anode of the light emitting diode of the second optocoupler IC2, the negative electrode of the second optocoupler IC2 connects the collector of the first NPN type triode Q1, the first end of the second resistance R2 and the first end of the 3rd resistance R3 are connected to the base stage of the first NPN type triode Q1 altogether, second end of the second resistance R2 and the emitter of the first NPN type triode Q1 are connected to ground altogether, second end of the 3rd resistance R3 is the internal receiving end of current ring communication module 101, the signal input part of the current collection of the phototriode of the second optocoupler IC2 very current ring communication module 101, the external transmitting terminal of the transmitting of the phototriode of the second optocoupler IC2 very current ring communication module 101.

As shown in Fig. 7, Fig. 8 and Fig. 9, signal backflow module 102 comprises the 4th resistance R4 and the first diode D1, the first end of the 4th resistance R4 is the input end of signal backflow module 102, second end of the 4th resistance R4 connects the anode of the first diode D1, and the negative electrode of the first diode D1 is the output terminal of signal backflow module 102.

The inner structure that electric current loop wakes control module 103 up specifically can be realized, respectively as shown in Fig. 7, Fig. 8 and Fig. 9 by three kinds of modes.Wherein, for Fig. 7, electric current loop wakes control module 103 up and comprises:

3rd optocoupler IC3, the 4th optocoupler IC4, the 5th resistance R5, the 6th resistance R6, the second NPN type triode Q2, the 7th resistance R7 and the 8th resistance R8;

The anode of the light emitting diode of the 3rd optocoupler IC3 is the signal input part that electric current loop wakes control module 103 up, it is the first signal output part that electric current loop wakes control module 103 up that the collector of the negative electrode of the light emitting diode of the 3rd optocoupler IC3 and the phototriode of the 4th optocoupler IC4 connects formed common contact altogether, the transmitting of the phototriode of the 3rd optocoupler IC3 very electric current loop wakes the power control terminal of control module 103 up, the transmitting of the phototriode of the 4th optocoupler IC4 very electric current loop wakes the secondary signal output terminal of control module 103 up, the first end of the 5th resistance R5 connects the collector of the phototriode of the 3rd optocoupler IC3, the common contact of second end of the 5th resistance R5 and the first end of the 6th resistance R6 is the power end that electric current loop wakes control module 103 up, the anode of second end of the 6th resistance R6 and the light emitting diode of the 4th optocoupler IC4 is connected to the collector of the second NPN type triode Q2 altogether, the first end of the 7th resistance R7 and the first end of the 8th resistance R8 are connected to the base stage of the second NPN type triode Q2 altogether, the first end of the 7th resistance R7 is the controlled end that electric current loop wakes control module 103 up, the negative electrode of the light emitting diode of second end of the 8th resistance R8 and the emitter of the second NPN type triode Q2 and the 4th optocoupler IC4 is connected to ground altogether.

For Fig. 8, electric current loop wakes control module 103 up and comprises:

5th optocoupler IC5, the 9th resistance R9, the first relay R Y1, the 3rd NPN type triode Q3, the tenth resistance R10 and the 11 resistance R11;

The anode of the light emitting diode of the 5th optocoupler IC5 is the signal input part that electric current loop wakes control module 103 up, it is the first signal output part that electric current loop wakes control module 103 up that the negative electrode of the light emitting diode of the 5th optocoupler IC5 and the normally closed contact 4 of the first relay R Y1 connect formed common contact altogether, the stationary contact 3 of the first relay R Y1 wakes the secondary signal output terminal of control module 103 up for electric current loop, the first common contact controlling the first end of contact 1 and the 9th resistance R9 of the first relay R Y1 is the power end that electric current loop wakes control module 103 up, second end of the 9th resistance R9 connects the collector of the phototriode of the 5th optocoupler IC5, the transmitting of the phototriode of the 5th optocoupler IC5 very electric current loop wakes the power control terminal of control module 103 up, normally opened contact 5 sky of the first relay R Y1 connects, the collector of the 3rd NPN type triode Q3 connects second of the first relay R Y1 and controls contact 2, the first end of the tenth resistance R10 is the controlled end that electric current loop wakes control module 103 up, second end of the tenth resistance R10 and the first end of the 11 resistance R11 are connected to the base stage of the 3rd NPN type triode Q3 altogether, second end of the 11 resistance R11 and the emitter of the 3rd NPN type triode Q3 are connected to ground altogether.

For Fig. 9, electric current loop wakes control module 103 up and comprises:

Second relay R Y2, the 6th optocoupler IC6, the 17 resistance R17, the 18 resistance R18, the 5th NPN type triode Q5, the 19 resistance R19 and the 20 resistance R20;

First of second relay R Y2 controls contact 1 for electric current loop and wakes the signal input part of control module 103 up, it is the first signal output part that electric current loop wakes control module 103 up that second collector controlling the phototriode of contact 2 and the 6th optocoupler IC6 of the second relay R Y2 connects formed common contact altogether, the stationary contact 3 of the second relay R Y2 wakes the power control terminal of control module 103 up for electric current loop, the transmitting of the phototriode of the 6th optocoupler IC6 very electric current loop wakes the secondary signal output terminal of control module 103 up, the first end of the 17 resistance R17 connects the normally opened contact 4 of the second relay R Y2, normally opened contact 5 sky of the second relay R Y2 connects, the common contact of second end of the 17 resistance R17 and the first end of the 18 resistance R18 is the power end that electric current loop wakes control module 103 up, the anode of second end of the 18 resistance R18 and the light emitting diode of the 6th optocoupler IC6 is connected to the collector of the 5th NPN type triode Q5 altogether, the first end of the 19 resistance R19 and the first end of the 20 resistance R20 are connected to the base stage of the 5th NPN type triode Q5 altogether, second end of the 19 resistance R19 is the controlled end that electric current loop wakes control module 103 up, the negative electrode of the light emitting diode of the 6th optocoupler IC6 and the emitter of the 5th NPN type triode Q5 and second end of the 20 resistance R20 are connected to ground altogether.

In the power circuit 300 shown in Fig. 1, it comprises switch power module 301 and energy supply control module 302, the output terminal of switch power module 301 is the first output terminal of power circuit 300, the output terminal of the input end connecting valve power module 301 of energy supply control module 302, the controlled end of energy supply control module 302 and output terminal are respectively controlled end and second output terminal of power circuit 300.

For energy supply control module 104, as shown in Fig. 7, Fig. 8 and Fig. 9, it comprises:

12 resistance R12, PNP type triode Qp, the 13 resistance R13, electrochemical capacitor E1, the 4th NPN type triode Q4, the 14 resistance R14 and the 15 resistance R15;

The common contact of the first end of the 12 resistance R12 and the emitter of PNP type triode Qp is the input end of energy supply control module 104, the output terminal of the current collection of PNP type triode Qp very energy supply control module 104, second end of the 12 resistance R12 and the first end of the 13 resistance R13, the base stage of PNP type triode Qp and the collector of the 4th NPN type triode Q4 connect altogether, second end of the 13 resistance R13 connects the positive pole of electrochemical capacitor E1, the first end of the 14 resistance R14 is the controlled end of energy supply control module 104, second end of the 14 resistance R14 and the first end of the 15 resistance R15 are connected to the base stage of the 4th NPN type triode Q4 altogether, second end of the 15 resistance R15 and the emitter of the 4th NPN type triode Q4 and the negative pole of electrochemical capacitor E1 are connected to ground altogether.

In addition, in actual applications, in order to the off-premises station load of different voltage requirements can be driven, voltage transformation module 303 (as shown in Figure 10) can also be comprised in power circuit 300, the input end of voltage transformation module 303 connects the output terminal of energy supply control module 302, the output terminal of voltage transformation module 303 is as the second output terminal VCC2 of power circuit 300, and voltage transformation module 303 carries out voltage transformation for the power supply exported energy supply control module 302.

Below in conjunction with principle of work, the current ring communication shown in Fig. 7 and power-supplying circuit 100 are described further:

After air conditioner complete machine is powered on by off-premises station, the 4th optocoupler IC4 obtains power supply and conducting by the 6th resistance R6 from switch power module 301, when current loop communication circuit 500 is by live wire L or zero line N dispatcher's office internal current communication signal S _rXduring to current ring communication module 101, the first optocoupler IC1 conducting by indoor electric current communication signal S _rXbe sent to the receiving end RX of master controller 200, meanwhile, indoor electric current communication signal S _rXthe 3rd optocoupler IC3 conducting is made by the light emitting diode of the first optocoupler IC1, then now power supply enters energy supply control module 302 to make the 4th NPN type triode Q4 conducting by the phototriode of the 3rd optocoupler IC3, and then making PNP type triode Qp also conducting, then power supply just exports by PNP type triode Qp with the load supplying to master controller 200 and off-premises station.Due to indoor electric current communication signal S _rXpulse signal, instead of constant high level, its waveform as shown in Figure 11, works as S _rXduring for high level, the first optocoupler IC1 and the 3rd optocoupler IC3 all conductings, now the first power supply VCC1 just enters energy supply control module 302 by the 3rd optocoupler IC3, thus makes the 4th NPN type triode Q4 and PNP type triode Qp conducting; Work as S _rXduring for low level, first optocoupler IC1 and the 3rd optocoupler IC3 all turns off, power supply cannot enter energy supply control module 302 by the 3rd optocoupler IC3, then the 4th NPN type triode Q4 cut-off, now power supply charges to electrochemical capacitor E1 through the 12 resistance R12 and the 13 resistance R13, PNP type triode Qp recharges here in process still can be in conducting state, by the choose reasonable duration of charging, can make charging complete moment and S _rXnext high level moment that arrives realize being connected, to make PNP type triode Qp maintain conducting state always, thus make energy supply control module 302 be in constant conduction state always.The conducting of the 4th optocoupler IC4 makes indoor electric current communication signal S _rXphototriode through the light emitting diode of the first optocoupler IC1, the light emitting diode of the 3rd optocoupler IC3 and the 4th optocoupler IC4 forms loop to be back to signal wire S.

Indoor electric current communication signal S is normally received at master controller 200 _rXafter, the control end P1 output control signal of waking up of master controller 200 controls the second NPN type triode Q2 conducting, then the 4th optocoupler IC4 is now because being turned off by the second NPN type triode Q2 short circuit, so the phototriode of the 4th optocoupler IC4 stops outputing signal to signal backflow module 104, after the above-mentioned control signal of output, master controller 200 can be passed through prefixed time interval T1 (as shown in figure 11) and exports outside electric current communication signal S by its transmitting terminal TX afterwards _tX, this outside electric current communication signal S _tXexport signal wire S to be sent to indoor set by the phototriode of the second optocoupler IC2, the 4th resistance R4 and the first diode D1, start to make indoor set and off-premises station to carry out normal electric current loop communication.In addition, as shown in figure 11, the indoor set outside electric current communication signal S that can send at the master controller 200 received in off-premises station _tXrear time delay a period of time interval T 2, then to off-premises station dispatcher's office internal current ring communication signal S _rX, thus make between indoor set and off-premises station, to realize normal electric current loop communication.

Carry out in the process of normal current ring communication at indoor set and off-premises station, the 4th optocoupler IC4 turns off, at master controller 200 receiving chamber internal current communication signal S _rXtime, the transmitting terminal TX of master controller 200 can export high level to make the second optocoupler IC2 conducting according to normal electric current loop Communication processing rule, now indoor electric current communication signal S _rXcarry out transmitting to maintain normal electric current loop communication in the electric current communication loop that live wire L (or zero line N), the first optocoupler IC1, the 3rd optocoupler IC3, the second optocoupler IC2, the 4th resistance R4, the first diode D1 and signal wire S are formed.If the main control chip in indoor set 600 sends off signal to master controller 200 by above-mentioned electric current communication loop, then master controller 200 can control load in off-premises station immediately (as compressor, outdoor fan) quit work, because indoor set no longer sends any signal to off-premises station after transmission off signal, so there is not electric current in electric current communication loop, then the first optocoupler IC1, 3rd optocoupler IC3 and the second optocoupler IC2 all turns off, second NPN type triode Q2 cut-off, power supply cannot export energy supply control module 104 to by the 3rd optocoupler IC3 simultaneously, and then cause the 4th NPN type triode Q4 cut-off, then PNP type triode Qp also ends thereupon, the first power supply VCC1 that now switch power module 300 exports is charged to electrochemical capacitor E1 by the 12 resistance R12 and the 13 resistance R13, the voltage of electrochemical capacitor E1 constantly raises along with the carrying out of charging process, and then the base voltage of PNP type triode Qp can be made to increase, when the base voltage of PNP type triode Qp is higher than 0.7V, then PNP type triode Qp cut-off, so now the second output terminal VCC2 of power circuit 300 does not export power supply, thus after the duration of charging of time delay electrochemical capacitor E1, make master controller 200 and other loads also power-off thereupon, off-premises station is enable normally to enter holding state and save energy consumption, meet low-power consumption requirement.

For the current ring communication shown in Fig. 8 and power-supplying circuit 100, the key distinction of itself and Fig. 7 is: the 4th optocoupler IC4 in Fig. 7 is replaced with the first relay R Y1.The difference of principle of work is mainly to be powered on to the course of work that indoor set and off-premises station realize the communication of normal current ring from air conditioner complete machine by off-premises station, specific as follows:

After air conditioner complete machine is powered on by off-premises station, the normally closed contact 4 of the first relay R Y1 keeps being communicated with switch contact 3, so the first optocoupler IC1, the 5th optocoupler IC5 and the first relay R Y1 form loop, when the current loop communication circuit 500 in indoor set is by live wire L or zero line N dispatcher's office internal current communication signal S _rXduring to current ring communication module 101, indoor electric current communication signal is also sent to the receiving end RX of master controller 200 by the first optocoupler IC1 conducting, meanwhile, and indoor electric current communication signal S _rXthe 5th optocoupler IC5 conducting is made by the light emitting diode of the first optocoupler IC1, then now power supply enters energy supply control module 104 to make the 4th NPN type triode Q4 conducting by the phototriode of the 5th optocoupler IC5, and then making PNP type triode Qp also conducting, then power supply just exports by PNP type triode Qp with to other load supplyings in master controller 200 and off-premises station.

Indoor electric current communication signal S is normally received at master controller 200 _rXafter, the control end P1 that wakes up of master controller 200 exports control signal control control the 3rd NPN type triode Q3 conducting, thus the normally opened contact 5 of the first relay R Y1 is communicated with stationary contact 3, so the first relay R Y1 stops outputing signal to signal backflow module 104, after the above-mentioned control signal of output, master controller 200 exports outside electric current communication signal S through prefixed time interval T1 (as shown in figure 11) by its transmitting terminal TX _tX, this outside electric current communication signal S _tXexport signal wire S to be sent to indoor set by the second optocoupler IC2, the 4th resistance R4 and the first diode D1, thus make indoor set and off-premises station start to carry out normal electric current loop communication.In addition, as shown in figure 11, the indoor set outside electric current communication signal S that can send at the master controller 200 received in off-premises station _tXrear time delay a period of time interval T 2, then to off-premises station dispatcher's office internal current ring communication signal S _rX, thus make between indoor set and off-premises station, to realize normal electric current loop communication.

Except the above-mentioned course of work, the principle of work of the current ring communication shown in Fig. 8 and power-supplying circuit 100 is same as shown in Figure 7, therefore repeats no more.Electric current loop for Fig. 7 wakes up in control module 103 and adopts the 4th optocoupler IC4 to carry out the mode controlled, due to after off-premises station enters holding state, first power supply VCC1 can pass through resistance (the 6th resistance R6 in Fig. 7) and drive optocoupler (the 4th optocoupler IC4 in Fig. 7) to be in conducting state always, electric current loop will be caused like this to wake control module 103 up and to produce certain power consumption, and can standby power be increased.And in the current ring communication shown in Fig. 8 and power-supplying circuit 100, after off-premises station enters holding state, because the 5th optocoupler IC5 turns off, and the 3rd NPN type triode Q3 cut-off can make the normally closed contact 4 of the first relay R Y1 recover to be communicated with stationary contact 3, now the first relay R Y1 does not work, so it is zero that electric current loop wakes the power that control module 103 consumes up, thus contribute to the standby power reducing air conditioner further.

For the current ring communication shown in Fig. 9 and power-supplying circuit 100, the key distinction of itself and Fig. 7 is: the 3rd optocoupler IC3 in Fig. 7 is replaced with the second relay R Y2.Because the second relay R Y2 exports indoor electric current communication signal S at the first optocoupler IC1 _rXor outside electric current communication signal S _tXin time, can be communicated with stationary contact 3 by adhesive normally opened contact 4, then power supply just exports energy supply control module 302 to by the 17 resistance R17 and the second relay R Y2, so its principle of work is identical with the 3rd optocoupler IC3, does not repeat them here.

For the current ring communication shown in Fig. 2 and power-supplying circuit, current ring communication module 101 included by it, signal backflow module 102 and electric current loop wake the inner structure of control module 103 up as shown in Figure 12, Figure 13 and Figure 14, identical respectively with shown in Fig. 7, Fig. 8 and Fig. 9, therefore repeats no more.

In the power circuit 300 shown in Fig. 2, it comprises switch power module 301 and energy supply control module 302, the output terminal of switch power module 301 is the first output terminal of power circuit 300, the output terminal of the input end connecting valve power module 301 of energy supply control module 302, the first controlled end of energy supply control module 302, the second controlled end and output terminal are respectively the emergency flight control end of power circuit 300, controlled end and the second output terminal.

For energy supply control module 104, as shown in Figure 12, Figure 13 and Figure 14, it comprises:

12 resistance R12, PNP type triode Qp, the 13 resistance R13, electrochemical capacitor E1, the 4th NPN type triode Q4, the 14 resistance R14, the 15 resistance R15 and the second diode D2;

The common contact of the first end of the 12 resistance R12 and the emitter of PNP type triode Qp is the input end of energy supply control module 104, the output terminal of the current collection of PNP type triode Qp very energy supply control module 104, second end of the 12 resistance R12 and the first end of the 13 resistance R13, the base stage of PNP type triode Qp and the collector of the 4th NPN type triode Q4 connect altogether, second end of the 13 resistance R13 connects the positive pole of electrochemical capacitor E1, the anode of the second diode D2 and the first end of the 14 resistance R14 are respectively the first controlled end and second controlled end of energy supply control module 104, the negative electrode of the second diode D2, second end of the 14 resistance R14 and the first end of the 15 resistance R15 are connected to the base stage of the 4th NPN type triode Q4 altogether, second end of the 15 resistance R15 and the emitter of the 4th NPN type triode Q4 and the negative pole of electrochemical capacitor E1 are connected to ground altogether.

In addition, in actual applications, in order to the off-premises station load of different voltage requirements can be driven, voltage transformation module 303 (as shown in figure 15) can also be comprised in power circuit 300, the input end of voltage transformation module 303 connects the output terminal of energy supply control module 302, the output terminal of voltage transformation module 303 is as the second output terminal VCC2 of power circuit 300, and voltage transformation module 303 carries out voltage transformation for the power supply exported energy supply control module 302.

For the current ring communication shown in Figure 12, Figure 13 and Figure 14 and power-supplying circuit, it is when electric current loop communication wire normally connects, principle of work is identical with the principle of work of the current ring communication shown in Fig. 7, Fig. 8 and Fig. 9 and power-supplying circuit respectively, therefore repeats no more.

In addition, carry out in the process of electric current loop communication at indoor set and off-premises station, if electric current loop communication wire (i.e. signal wire S, live wire L or zero line N) disconnects because of accident, master controller 200 can not receive the indoor electric current communication signal S that indoor set sends always _rX, so master controller 200 can be in accepting state always, now electric current loop wakes control module 103 up and quits work that (the 3rd optocoupler IC3 namely in Figure 12 turns off, the 5th optocoupler IC5 in Figure 13 turns off, the normally closed contact 5 of the second relay R Y2 in Figure 14 recovers to be communicated with stationary contact 3), then the 14 resistance R14 does not receive the power supply waking control module 103 output from electric current loop up, and when not receiving indoor electric current communication signal from the receiving end RX of master controller 200, the control end P1 that wakes up of master controller 200 continues to export high level (namely above-mentioned Continuity signal), this high level continues control the 4th NPN type triode Q4 conducting by the second diode D2, then PNP type triode Qp also can continue conducting, so the power supply that switch power module 300 exports can be exported by PNP type triode Qp and the load continuing as master controller 200 and off-premises station provides power supply, if the time that master controller 200 does not receive indoor electric current communication signal reaches preset time period (as 3 minutes), the load that then master controller 200 can control in off-premises station quits work, and wake control end P1 output low level (namely above-mentioned shutdown signal) up by the second diode D2 control the 4th NPN type triode Q4 cut-off by it, then PNP type triode Qp also enters cut-off state during charging complete within the electrochemical capacitor E1 short time, thus stop exporting power supply, the load of master controller 200 and off-premises station also normal power down thereupon, this makes it possible to ensure that the load in off-premises station realizes normal closedown when electric current loop communication accidental interruption, load is avoided to damage because of improper closedown, reach safety shutdown and reduce the object of energy consumption.

For the current ring communication shown in Fig. 3 and power-supplying circuit, current ring communication module 101 included by it, signal backflow module 102 and electric current loop wake the inner structure of control module 103 up as shown in Figure 16, Figure 17 and Figure 18, identical respectively with shown in Fig. 7, Fig. 8 and Fig. 9, therefore repeats no more.

In the power circuit 300 shown in Fig. 3, it comprises switch power module 301 and energy supply control module 302, the output terminal of switch power module 301 is the first output terminal of power circuit 300, the output terminal of the input end connecting valve power module 301 of energy supply control module 302, the first controlled end of energy supply control module 302, the second controlled end and output terminal are respectively the emergency flight control end of power circuit 300, controlled end and the second output terminal.Wherein, the inner structure of energy supply control module 302 is as shown in Figure 16, Figure 17 and Figure 18, and identical respectively with shown in Figure 12, Figure 13 and Figure 14, therefore repeats no more.

In addition, in actual applications, in order to the off-premises station load of different voltage requirements can be driven, voltage transformation module 303 (as shown in figure 19) can also be comprised in power circuit 300, the input end of voltage transformation module 303 connects the output terminal of energy supply control module 302, the output terminal of voltage transformation module 303 is as the second output terminal VCC2 of power circuit 300, and voltage transformation module 303 carries out voltage transformation for the power supply exported energy supply control module 302.

For the current ring communication shown in Figure 16, Figure 17 and Figure 18 and power-supplying circuit, it is when electric current loop communication wire normally connects, principle of work is identical with the principle of work of the current ring communication shown in Fig. 7, Fig. 8 and Fig. 9 and power-supplying circuit respectively, therefore repeats no more.

In addition, carry out in the process of electric current loop communication at indoor set and off-premises station, if electric current loop communication wire (i.e. signal wire S, live wire L or zero line N) disconnects because of accident, master controller 200 can not receive the indoor electric current communication signal S that indoor set sends always _rX, so master controller 200 can be in accepting state always, now electric current loop wakes control module 103 up and quits work that (the 3rd optocoupler IC3 namely in Figure 16 turns off, the 5th optocoupler IC5 in Figure 17 turns off, the normally closed contact 5 of the second relay R Y2 in Figure 18 recovers to be communicated with stationary contact 3), then the 14 resistance R14 does not receive the power supply waking control module 103 output from electric current loop up, and when not receiving indoor electric current communication signal from the receiving end RX of master controller 200, the power control terminal P2 of master controller 200 continues to export high level (namely above-mentioned Continuity signal), this high level continues control the 4th NPN type triode Q4 conducting by the second diode D2, then PNP type triode Qp also can continue conducting, so the power supply that switch power module 300 exports can be exported by PNP type triode Qp and the load continuing as master controller 200 and off-premises station provides power supply, if the time that master controller 200 does not receive indoor electric current communication signal reaches preset time period (as 3 minutes), the load that then master controller 200 can control in off-premises station quits work, and control the 4th NPN type triode Q4 cut-off by its power control terminal P2 output low level (namely above-mentioned shutdown signal) by the second diode D2, then PNP type triode Qp also enters cut-off state during charging complete within the electrochemical capacitor E1 short time, thus stop exporting power supply, the load of master controller 200 and off-premises station also normal power down thereupon, this makes it possible to ensure that the load in off-premises station realizes normal closedown when electric current loop communication accidental interruption, load is avoided to damage because of improper closedown, reach safety shutdown and reduce the object of energy consumption.

The application advantage in air conditioner based on above-mentioned current ring communication and power-supplying circuit 100, the present embodiment additionally provides a kind of air conditioner, and it comprises indoor set and off-premises station, and has above-mentioned current ring communication and power-supplying circuit 100 in off-premises station.

In addition, in order to can when indoor set and off-premises station carry out electric current loop communication the DC voltage of steady current ring communication loop, to ensure communication quality, also comprise electric current loop Voltage stabilizing module 700 in air conditioner, it can be arranged in indoor set or off-premises station.The embodiment of the present invention is to be described in machine disposed in the outdoor, as shown in Figure 20 (corresponding diagram 1), Figure 21 (corresponding diagram 2) and Figure 22 (corresponding diagram 3), first input end and second input end of electric current loop Voltage stabilizing module 700 are connected live wire L and zero line N respectively, or as shown in Figure 23 (corresponding diagram 1), Figure 24 (corresponding diagram 2) and Figure 25 (corresponding diagram 3), first input end and second input end of electric current loop Voltage stabilizing module 700 are connected zero line N and live wire L respectively, and its output terminal connects the external receiving end of current ring communication module 101.

Concrete, as shown in Figure 26 (corresponding Figure 20), Figure 27 (corresponding Figure 21), Figure 28 (corresponding Figure 22), Figure 29 (corresponding Figure 23), Figure 30 (corresponding Figure 24) and Figure 31 (corresponding Figure 25), electric current loop Voltage stabilizing module 700 comprises:

16 resistance R16, the 3rd diode D3, voltage stabilizing diode ZD1 and electric capacity C1;

The first end of the 16 resistance R16 is the first input end of electric current loop Voltage stabilizing module 700, second end of the 16 resistance R16 connects the anode of the 3rd diode D3, the common contact of the anode of voltage stabilizing diode ZD1 and the first end of electric capacity C1 is the second input end of electric current loop Voltage stabilizing module 700, and the negative electrode of the 3rd diode D3 and the common contact of the negative electrode of voltage stabilizing diode ZD1 and second end of electric capacity C1 are the output terminal of electric current loop Voltage stabilizing module 700.

The embodiment of the present invention comprises current ring communication module 101 by adopting in air-conditioner outdoor unit, signal backflow module 102 and electric current loop wake current ring communication and the power-supplying circuit 100 of control module 103 up, after off-premises station powers on, the second output terminal VCC2 output power supply that control module 103 controls power circuit 300 is waken up by electric current loop, work on power to enable the master controller 200 in off-premises station and other loads, and after indoor set sends off signal to off-premises station or when electric current loop communication wire disconnects, the load that master controller 200 controls in off-premises station quits work, and electric current loop wakes control module 103 up quits work (namely indoor set sends after off signal to off-premises station) or master controller 200 exports shutdown signal (when namely electric current loop communication wire disconnects) and stops output power supply to make the second output terminal VCC2 of power circuit 300, thus the power supply cut off the master controller 200 in off-premises station and other loads, with make off-premises station standby or surprisingly disconnect communication with indoor set and safety shutdown time the lower power consumption that consumes, and then the standby power that can reduce air conditioner is to meet low energy consumption requirement.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims

1. the current ring communication of an air-conditioner outdoor unit and power-supplying circuit, it comprises current ring communication module and signal backflow module, and the master controller in described off-premises station carries out electric current loop communication by the main control chip of the current loop communication circuit in described current ring communication module, the backflow of described signal module, signal wire, live wire or zero line, air conditioner room unit and described indoor set; First output terminal and second output terminal of the power circuit in described off-premises station all export power supply, and the power supply that the load in described master controller and described off-premises station exports according to the second output terminal of described power circuit works on power; It is characterized in that, described current ring communication and power-supplying circuit also comprise electric current loop and wake control module up;

2. current ring communication as claimed in claim 1 and power-supplying circuit, it is characterized in that, the control end that wakes up of described master controller is also connected with the emergency flight control end of described power circuit;

In the process of described electric current loop communication, when described electric current loop communication wire disconnects, described current ring communication module no signal exports described electric current loop to and wakes control module up, described electric current loop wakes control module up and quits work, when not receiving indoor electric current communication signal from the receiving end of described master controller, the control end that wakes up of described master controller continues to export Continuity signal to control the described power supply of the second output terminal continuation output of described power circuit;

If the time that described master controller does not receive indoor electric current communication signal reaches preset time period, load then in described main controller controls off-premises station quits work, and the control end that wakes up of described master controller exports the described power supply of the second output terminal stopping output that shutdown signal controls described power circuit.

3. current ring communication as claimed in claim 1 and power-supplying circuit, it is characterized in that, the power control terminal of described master controller is connected with the emergency flight control end of described power circuit;

In the process of described electric current loop communication, when described electric current loop communication wire disconnects, described current ring communication module no signal exports described electric current loop to and wakes control module up, described electric current loop wakes control module up and quits work, when not receiving indoor electric current communication signal from the receiving end of described master controller, the power control terminal of described master controller continues to export Continuity signal and continues to export described power supply with the second output terminal controlling described power circuit;

If the time that described master controller does not receive indoor electric current communication signal reaches preset time period, load then in described main controller controls off-premises station quits work, and the power control terminal of described master controller exports the described power supply of the second output terminal stopping output that shutdown signal controls described power circuit.

4. current ring communication as claimed in claim 1 and power-supplying circuit, it is characterized in that, described current ring communication module comprises:

First optocoupler, the second optocoupler, the first resistance, the first NPN type triode, the second resistance and the 3rd resistance;

The anode of the light emitting diode of described first optocoupler and negative electrode are respectively external receiving end and the signal output part of described current ring communication module, the common contact of the collector of the phototriode of described first optocoupler and the first end of described first resistance is the power end of described current ring communication module, the internal transmitting terminal of the very described current ring communication module of transmitting of the phototriode of described first optocoupler, second end of described first resistance connects the anode of the light emitting diode of described second optocoupler, the negative electrode of described second optocoupler connects the collector of described first NPN type triode, the first end of described second resistance and the first end of described 3rd resistance are connected to the base stage of described first NPN type triode altogether, second end of described second resistance and the emitter of described first NPN type triode are connected to ground altogether, second end of described 3rd resistance is the internal receiving end of described current ring communication module, the signal input part of the very described current ring communication module of current collection of the phototriode of described second optocoupler, the external transmitting terminal of the very described current ring communication module of transmitting of the phototriode of described second optocoupler.

5. current ring communication as claimed in claim 1 and power-supplying circuit, it is characterized in that, described signal backflow module comprises the 4th resistance and the first diode, the first end of described 4th resistance is the input end of described signal backflow module, second end of described 4th resistance connects the anode of described first diode, and the negative electrode of described first diode is the output terminal of described signal backflow module.

6. current ring communication as claimed in claim 1 and power-supplying circuit, it is characterized in that, described electric current loop wakes control module up and comprises:

3rd optocoupler, the 4th optocoupler, the 5th resistance, the 6th resistance, the second NPN type triode, the 7th resistance and the 8th resistance;

The anode of the light emitting diode of described 3rd optocoupler is the signal input part that described electric current loop wakes control module up, it is the first signal output part that described electric current loop wakes control module up that the collector of the negative electrode of the light emitting diode of described 3rd optocoupler and the phototriode of described 4th optocoupler connects formed common contact altogether, the very described electric current loop of transmitting of the phototriode of described 3rd optocoupler wakes the power control terminal of control module up, the very described electric current loop of transmitting of the phototriode of described 4th optocoupler wakes the secondary signal output terminal of control module up, the first end of described 5th resistance connects the collector of the phototriode of described 3rd optocoupler, the common contact of the second end of described 5th resistance and the first end of described 6th resistance is the power end that described electric current loop wakes control module up, the anode of the second end of described 6th resistance and the light emitting diode of described 4th optocoupler is connected to the collector of described second NPN type triode altogether, the first end of described 7th resistance and the first end of described 8th resistance are connected to the base stage of described second NPN type triode altogether, the first end of described 7th resistance is the controlled end that described electric current loop wakes control module up, the negative electrode of the light emitting diode of the second end of described 8th resistance and the emitter of described second NPN type triode and described 4th optocoupler is connected to ground altogether.

7. current ring communication as claimed in claim 1 and power-supplying circuit, it is characterized in that, described electric current loop wakes control module up and comprises:

5th optocoupler, the 9th resistance, the first relay, the 3rd NPN type triode, the tenth resistance and the 11 resistance;

The anode of the light emitting diode of described 5th optocoupler is the signal input part that described electric current loop wakes control module up, it is the first signal output part that described electric current loop wakes control module up that the negative electrode of the light emitting diode of described 5th optocoupler and the normally closed contact of described first relay connect formed common contact altogether, the stationary contact of described first relay is the secondary signal output terminal that described electric current loop wakes control module up, the first common contact controlling the first end of contact and described 9th resistance of described first relay is the power end that described electric current loop wakes control module up, second end of described 9th resistance connects the collector of the phototriode of described 5th optocoupler, the very described electric current loop of transmitting of the phototriode of described 5th optocoupler wakes the power control terminal of control module up, the normally opened contact sky of described first relay connects, the collector of described 3rd NPN type triode connects second of described first relay and controls contact, the first end of described tenth resistance is the controlled end that described electric current loop wakes control module up, second end of described tenth resistance and the first end of described 11 resistance are connected to the base stage of described 3rd NPN type triode altogether, second end of described 11 resistance and the emitter of described 3rd NPN type triode are connected to ground altogether.

8. current ring communication as claimed in claim 1 and power-supplying circuit, it is characterized in that, described electric current loop wakes control module up and comprises:

Second relay, the 6th optocoupler, the 17 resistance, the 18 resistance, the 5th NPN type triode, the 19 resistance and the 20 resistance;

It is the signal input part that described electric current loop wakes control module up that first of described second relay controls contact, it is the first signal output part that described electric current loop wakes control module up that second collector controlling the phototriode of contact and described 6th optocoupler of described second relay connects formed common contact altogether, the stationary contact of described second relay is the power control terminal that described electric current loop wakes control module up, the very described electric current loop of transmitting of the phototriode of described 6th optocoupler wakes the secondary signal output terminal of control module up, the first end of described 17 resistance connects the normally opened contact of described second relay, the normally opened contact sky of described second relay connects, the common contact of the second end of described 17 resistance and the first end of described 18 resistance is the power end that described electric current loop wakes control module up, the anode of the second end of described 18 resistance and the light emitting diode of described 6th optocoupler is connected to the collector of described 5th NPN type triode altogether, the first end of described 19 resistance and the first end of described 20 resistance are connected to the base stage of described 5th NPN type triode altogether, second end of described 19 resistance is the controlled end that described electric current loop wakes control module up, the negative electrode of the light emitting diode of described 6th optocoupler and the emitter of described 5th NPN type triode and the second end of described 20 resistance are connected to ground altogether.

9. current ring communication as claimed in claim 1 and power-supplying circuit, it is characterized in that, described energy supply control module comprises:

12 resistance, PNP type triode, the 13 resistance, electrochemical capacitor, the 4th NPN type triode, the 14 resistance and the 15 resistance;

The common contact of the described first end of the 12 resistance and the emitter of described PNP type triode is the input end of described energy supply control module, the output terminal of the very described energy supply control module of current collection of described PNP type triode, second end of described 12 resistance and the first end of described 13 resistance, the base stage of described PNP type triode and the collector of described 4th NPN type triode connect altogether, second end of described 13 resistance connects the positive pole of described electrochemical capacitor, the first end of described 14 resistance is the controlled end of described energy supply control module, second end of described 14 resistance and the first end of described 15 resistance are connected to the base stage of described 4th NPN type triode altogether, second end of described 15 resistance and the described emitter of the 4th NPN type triode and the negative pole of described electrochemical capacitor are connected to ground altogether.

10. current ring communication as claimed in claim 2 or claim 3 and power-supplying circuit, it is characterized in that, described energy supply control module comprises:

12 resistance, PNP type triode, the 13 resistance, electrochemical capacitor, the 4th NPN type triode, the 14 resistance, the 15 resistance and the second diode;

The common contact of the described first end of the 12 resistance and the emitter of described PNP type triode is the input end of described energy supply control module, the output terminal of the very described energy supply control module of current collection of described PNP type triode, second end of described 12 resistance and the first end of described 13 resistance, the base stage of described PNP type triode and the collector of described 4th NPN type triode connect altogether, second end of described 13 resistance connects the positive pole of described electrochemical capacitor, the anode of described second diode and the first end of described 14 resistance are respectively emergency flight control end and the controlled end of described energy supply control module, the negative electrode of described second diode, second end of described 14 resistance and the first end of described 15 resistance are connected to the base stage of described 4th NPN type triode altogether, second end of described 15 resistance and the described emitter of the 4th NPN type triode and the negative pole of described electrochemical capacitor are connected to ground altogether.

11. 1 kinds of air conditioners, comprise indoor set and off-premises station, it is characterized in that, have the current ring communication as described in any one of claim 1 to 9 and power-supplying circuit in described off-premises station.

12. air conditioners as claimed in claim 11, it is characterized in that, described air conditioner also comprises electric current loop Voltage stabilizing module, first input end and second input end of described electric current loop Voltage stabilizing module are connected live wire respectively and are connected zero line and live wire with the first input end of zero line or described electric current loop Voltage stabilizing module respectively with the second input end, and the output terminal of described electric current loop Voltage stabilizing module connects the external receiving end of described current ring communication module.

13. air conditioners as claimed in claim 12, it is characterized in that, described electric current loop Voltage stabilizing module comprises:

16 resistance, the 3rd diode, voltage stabilizing diode and electric capacity;

The first end of described 16 resistance is the first input end of described electric current loop Voltage stabilizing module, second end of described 16 resistance connects the anode of described 3rd diode, the common contact of the anode of described voltage stabilizing diode and the first end of described electric capacity is the second input end of described electric current loop Voltage stabilizing module, and the described negative electrode of the 3rd diode and the common contact of the negative electrode of described voltage stabilizing diode and the second end of described electric capacity are the output terminal of described electric current loop Voltage stabilizing module.

14. 1 kinds of current ring communications based on current ring communication according to claim 1 and power-supplying circuit and method for controlling power supply, it is characterized in that, described current ring communication and method for controlling power supply comprise the following steps:

15. current ring communication as claimed in claim 14 and method for controlling power supply, is characterized in that, described current ring communication and method for controlling power supply further comprising the steps of:

In the process of described electric current loop communication, when electric current loop communication wire disconnects, described current ring communication module no signal exports described electric current loop to and wakes control module up, and described electric current loop wakes control module up and quits work;

When not receiving indoor electric current communication signal from the receiving end of described master controller, the control end that wakes up of described master controller continues to export Continuity signal to make the described power supply of the second output terminal continuation output of described power circuit;

16. current ring communication as claimed in claim 14 and method for controlling power supply, is characterized in that, described current ring communication and method for controlling power supply further comprising the steps of:

When not receiving indoor electric current communication signal from the receiving end of described master controller, the power control terminal of described master controller continues to export Continuity signal and continues to export described power supply to make the second output terminal of described power circuit;