CN1809975A - Power line communication device, control system, and method for setting a connection wire in power line communication device - Google Patents

Power line communication device, control system, and method for setting a connection wire in power line communication device Download PDF

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Publication number
CN1809975A
CN1809975A CN 200480017646 CN200480017646A CN1809975A CN 1809975 A CN1809975 A CN 1809975A CN 200480017646 CN200480017646 CN 200480017646 CN 200480017646 A CN200480017646 A CN 200480017646A CN 1809975 A CN1809975 A CN 1809975A
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China
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mentioned
power line
line communication
power
communication device
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CN 200480017646
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Chinese (zh)
Inventor
秋山登
小嵨康行
尾中猛
山内辰美
谷口康一
德重浩一
分校教之
佐藤敬治
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Hitachi Ltd
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Hitachi Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5466—Systems for power line communications using three phases conductors

Abstract

The present invention improves reliability of communication when a plurality of power line communication devices where a high frequency signal is overlapped with two electric power wires of three phase electric power wires are connected on the three phase electric power wires and the respective devices make communication. The power line communication device 1100 has a communication MODEM 100 where the high frequency signal is overlapped with the two electric power wires of the three phase electric power wires 10, 11 and 12. The device is provided with means which are sequentially connected to the three phase electric power wires by a plurality of circuit connection conditions for connecting the communication MODEM 100 and the three phase electric power wires 10, 11 and 12, a means for making communication for at least two times or above, and a means for setting connection to the two electric power wires of the three phase electric power wires 10, 11 and 12 by the circuit connection condition with the largest number of reception detection times.

Description

The method of the connection distribution in power line communication device, control system, the setting power line communication apparatus
Technical field
The present invention relates to the technology that on two power wirings of polyphase electric power distribution overlapping high-frequency signal carries out power line communication.
Background technology
In recent years, relate to and utilize outdoor distribution wire or the existing power distributions such as electric wire in the family to realize that the technology of the power line communication device of various digital communications receives publicity.By means of this power line communication device, for example just can realize networking by in factory or office, a plurality of electric products being connected to the existing power distribution, carry out various processing such as the control of these goods and data communication, and need not reset communications patching.
And, following situation is arranged in power line communication device in the past, promptly, by on mutual high frequency ground apart, between 23 phase power wirings (between 23 phase power wirings that connected on the different transformers) dispose a pair of holding wire, cross over configuration network coupler between 3 phase power wirings and above-mentioned a pair of holding wire simultaneously, be implemented in the data communication (for example flat 8-139650 communique of Japan Patent Publication Laid-Open) between the device that each alternate difference connected of 23 phase power wirings that separated.
In addition, in the power line communication device that on 3 phase power wirings in the past, is connected following situation is arranged, promptly, switch telecommunication circuit that this device has with 3 mutually the connection of two power wirings among the power wiring receive answer signal, and judge the connection phase (for example flat 10-341191 communique of Japan Patent Publication Laid-Open) that is connecting communication object according to the size of its incoming level.
But the technology of the flat 8-139650 communique of above-mentioned Japan Patent Publication Laid-Open has following problem.Owing to generally on power wiring, connecting various equipment, so the characteristic that is easy to introduce noise and so on is just arranged.And, for example under the different separately situation of telecommunication circuit that connects a plurality of power line communication devices and each device on the 3 phase power wirings and annexation between the 3 phase power wirings, certain power line communication device just can't be familiar with sometimes and go up the power line communication device as communication object that is connected mutually at other and communicate by letter.For this reason, just have at certain above-mentioned power line communication device to have sent under the situation of signal of communication, will produce conflict with the signal in communicating by letter and the problem of generation garble and so on.
In addition, the technology that the flat 10-341191 communique of above-mentioned Japan Patent Publication Laid-Open is put down in writing is that the connection that the judgement of the incoming level by answer signal communicates object is confirmed mutually.But, in the bigger environment of noise, have more and so on the problem of the situation of the wrong connection phase of determining communication object because of the judgement of this incoming level is difficult.And, under the situation of the connection phase of having made a mistake communication object like this, just there is the carrier wave that before communication, carries out to detect the many tendencies of situation change that flase drop is surveyed take place in (carriersense), the result just has the problem that is easy to take place garble and so on.
Summary of the invention
Thereby, purpose of the present invention is exactly to be connected on the polyphase electric power distribution and under situation about communicating between each device at the power line communication device that overlapping high-frequency signal on two power wirings among the polyphase electric power distribution communicates, perhaps under the situation about communicating between the power line communication device that on the power line communication device that is connected on the polyphase electric power distribution and single-phase distribution, is connected, the reliability of communication is improved.
In order to solve above-mentioned problem, according to a kind of technical scheme of the present invention, be provided with in the power line communication device of the communication unit that overlapping high-frequency signal on two power wirings that have among the polyphase electric power distribution communicates: the parts that communication unit are connected in turn the polyphase electric power distribution with the multiple condition of contact of two power wirings among connection communication unit and the polyphase electric power distribution; Carry out the parts of the communication more than at least twice with each condition of contact; And detect the parts that are connected that the maximum condition of contact of number of times is set communication unit and polyphase electric power distribution with the reception of communication.
So,, change condition of contact in turn and be connected to power wiring, carry out more than twice communication at least, and detect the maximum condition of contact of number of times with reception and set being connected of communication component and above-mentioned power wiring with each condition of contact according to the technical program.Thereby, even if under the situation that the bigger environment of noise or noise take place brokenly, (for example also can determine best condition of contact accurately, using incoming level to determine in the method for condition of contact by the affirmation signal of the detected regulation of each condition of contact, the detection of incoming level accurately relatively difficulty and can't determine the condition of contact of the best accurately).In the technical program, the reliability of the power line communication that overlapping high-frequency signal communicates on power wiring is improved for this reason.
So, according to the present invention, carry out that power line communication device is connected on the polyphase electric power distribution and under situation about communicating between each device at overlapping high-frequency signal on the power wiring, perhaps under the situation about communicating between the power line communication device that on the power line communication device that is connected on the polyphase electric power distribution and single-phase distribution, is connected, the reliability of communication is improved.
The record of other purposes of the present invention, feature and advantage embodiment of the invention below relevant with accompanying drawing will be come to understand.
Description of drawings
Fig. 1 has been to use the summary pie graph of the control system of the power line communication device that the present invention the 1st embodiment is suitable for.
Fig. 2 is the figure of concrete formation that is used to illustrate the power line communication device 1100 of present embodiment.
Fig. 3 is the figure of concrete formation that is used to illustrate the power line communication modem 100 of power line communication device 1100.
Fig. 4 is the figure of concrete formation that is used to illustrate the power line communication device 2100 of present embodiment.
Fig. 5 is the figure that is used to illustrate the concrete formation of power line communication modem 200.
Fig. 6 is the figure that is used to illustrate the selection handling process of the power wiring that has used the power line communication device that present embodiment was suitable for 1100.
Fig. 7 has been to use the summary pie graph of the control system of the power line communication device that the present invention the 2nd embodiment is suitable for.
Fig. 8 is the figure that is used to illustrate the formation of the bridgt circuit 50 that the control system of having used the power line communication device 1100 that the present invention the 2nd embodiment is suitable for has.
Fig. 9 is the figure of the handling process of the power line communication device 1100 that is used to illustrate the present invention the 2nd embodiment connection distribution that carries out directed really 3 phase power wirings.
Figure 10 is the figure that is used to illustrate the handling process of bridgt circuit 50.
Figure 11 has been to use the summary pie graph of the control system of the power line communication device that the present invention the 3rd embodiment is suitable for.
Figure 12 is to use the summary pie graph of the control system of the power line communication device that the present invention the 4th embodiment is suitable for.
Embodiment
(embodiment 1)
Below, utilize accompanying drawing to describe with regard to embodiments of the invention.
At first, describe with regard to the 1st embodiment of the present invention.In addition, though in the present embodiment, the situation of air-conditioning system that is applied to have the refrigerant mode of off-premises station and indoor set with the present invention is that example illustrates, is not to be defined in this especially.So long as the device that overlapping high-frequency signal communicates on two power wirings of polyphase electric power distribution just can be suitable for the present invention.
Fig. 1 has been to use the summary pie graph of the control system of the power line communication device that the present invention the 1st embodiment is suitable for.Such as shown, this control system have the 3 phase power wirings 10,11,12 (being followed successively by R phase, S phase, T phase) that are connected to 3 phase 200V power line communication device 1100a, b, c ... n; Via distribution board 40 be connected to the Monophase electric power distribution 20,21,22 (being followed successively by L1 phase, N phase, L2 phase) of single-phase (100V/200V) power line communication device 2100a, b ... n; Via distribution board 41 be connected to the Monophase electric power distribution 20,21,22 (being followed successively by L1 phase, N phase, L2 phase) of single-phase (100V/200V) power line communication device 2200a, b ... n; And between 3 phase power wirings (10,11,12) and Monophase electric power distribution (20,21,22) capacitor 30,31 as the capacitive coupling parts (establishing capacitor 30 and 31 insulate mutually with source power supply (50Hz/60Hz) level) by the high-frequency transmission signal.In addition, establishing Monophase electric power distribution 20,21,22 (being followed successively by L1 phase, N phase, L2 phase), to constitute L1 and L2 alternate with N alternate with N be 200V for 100V, L1 are alternate with L2.
In addition, capacitor 30,31 constitutes any two power wirings that are connected in the 3 phase power wirings 10,11,12.In addition, in the present embodiment, because carrying out the power line communication device 2100 (2200) of power line communication with power line communication device 1100 is the equipment that needs the power supply supply of single-phase 200V, so the connection of the Monophase electric power distribution side of capacitor 30,31 is confirmed as Monophase electric power distribution 20,22 mutually.In addition, though example goes out capacitor 30 and is connected to 3 phase power wirings 11 (S phase) in Fig. 1, capacitor 31 is connected to the situation of 3 phase power wirings 10 (R phase), and present embodiment is not to be defined in this especially.For example, also capacitor 30 can be connected to 3 phase power wirings 10 (R phase), capacitor 31 is connected to 3 phase power wirings 12 (T phase).
Power line communication device 1100 (a, b, c ... n) constitute built-in power line communication modem 100, and the off-premises station that conduct has an air-conditioning system of compressor, cross valve and heat exchanger etc. is brought into play function with function of selected and 3 connections of power wiring 10,11,12 mutually (carrying out the selection of certain two power wiring in the 3 phase power wirings 10,11,12).In addition, power line formula communicator 1100 (a, b, c ... power supply terminal 42 n) respectively to every kind of equipment (each power line formula communicator 1100a, b, c ... n) with the different 3 phase power wirings mutually 10,11,12 that are sequentially connected to.For example, in power line formula electrical power wiring assembly 1100a, the power supply terminal 42 on left side, central authorities, right side is connected respectively to R phase 10, S phase 11, T phase 12.In addition, in air conditioner 1100b, the power supply terminal 42 on left side, central authorities, right side is connected respectively to T phase 12, R phase 10, S phase 11.In addition, in air conditioner 1100c, the power supply terminal 42 on left side, central authorities, right side is connected respectively to S phase 11, T phase 12, R phase 10.
In distribution board 40 (41), be provided with blocking filter 401 (blocking filter 411) and FFB (Inturruptor for sub-line) 400 (FFB410).And, on the power wiring 44 that the single-phase 200V that is connected to distribution board 40 (41) is,, connecting at least one above power line communication device 2100 (2200) via FFB400 (FFB410).In addition, on the power wiring 45 that the single-phase 100V that is connected to distribution board 40 (41) is, connecting general electric equipments such as fluorescent lamp or roaster via blocking filter 401 (blocking filter 411) and FFB400 (FFB410).Blocking filter 401 (411) performance functions so that single-phase 200V be on the distribution 44 overlapping signal do not leak into the distribution 45 that connects single-phase 100V system, device (for example fluorescent lamp etc.), the noise that takes place in the single-phase 100V system, device is not leaked on the power wiring that carries out power line communication.In addition, in the explanation of present embodiment, establishing electroplax 40 is arranged on 1 layer of building, and distribution board 42 is arranged on 2 layers (distribution board about other layers then omits) of building.
In addition, power line communication device 2100 (a, b ..., n) constitute built-in power line communication modem 200, and bring into play function as the indoor set of air-conditioning system with heat exchanger etc.In addition, in the explanation of present embodiment, if power line communication device 1100a and power line formula communicator 2100 (a, b ..., n) couple together with the refrigerant pipe (copper pipe etc.) of same refrigerant system, power line communication device 1100b and power line formula communicator 2200 (a, b ... n) the refrigerant pipe (copper pipe etc.) with same refrigerant system couples together.
And, the power line communication device 2100 (2200) that is connected on the refrigerant pipe of power line communication device 1100a (b, c..., n) and same refrigerant system is received and dispatched control signal (for example being used to control the data of room temperature or air quantity) by power line communication Yi Bian become one and move mutually Yi Bian constitute.For example, as the power line communication device 2100a of indoor set performance function, for indoor temperature being reduced the control signal that power line communication apparatus 1100a (off-premises station) is sent regulation.The action that the power line apparatus 1100a of the control signal of the afore mentioned rules that receives then, (off-premises station) controls compressor etc. according to this regulation control signal that is received constitutes like this.
In addition, such as shown, 3 phase power wirings 10,11,12 are provided with blocking filter 300.This blocking filter 300 functions as follows, promptly, make on the 3 phase power wirings 10,11,12 overlapping signal do not leak into the distribution side of branch of institute, the noise that is taken place on the equipment of distribution side of branch of institute is not leaked on the distribution that carries out power line communication.
Next, utilize Fig. 2, Fig. 3 with regard to the power line communication device 1100 of the present invention the 1st embodiment (a, b ..., n) concrete formation describe.
Fig. 2 is the figure of concrete formation that is used to illustrate the power line communication device 1100 of present embodiment.Such as shown, power line communication device 1100 possesses: the power line communication modem 100 with function that is connected of selected and power wiring; To bring into play the control circuit of controlling 1110 that self moves of function as the off-premises station of air-conditioning system; The input/output interface of this control circuit 1110 (I/O) 1160; Carry out compressor driven 1140 (carrying out the compression of refrigerant) by motor 1130; Converter 1120 according to the rotating speed of controlling motor 1130 from the command value of control circuit 1110; The noise filter 1150 of converter 1120 usefulness; Set the refrigerant system of air-conditioning system and determining power line communication modem 100 and the 3 II shape plug-in type switches (DIP switch) 1161 that (narrating in the back about the method that determines) fixes connection with this condition when the condition of contact of power wiring mutually; And the splicing ear 42 of 3 phase power wirings 10,11,12 (a, b, c).In addition, establish I/O1160 and have the display unit that is for example constituted, carry out the demonstration of condition of contact described later with display panels etc.
Fig. 3 is the figure of concrete formation that is used to illustrate the power line communication modem 100 of power line communication device 1100.Such as shown, power line communication modem 100 possesses: relay a110, relay b111, coupling circuit 120, transmit amplifier 132, filter 135, modulation circuit 131, demodulator circuit 136, digital signal processor (at following being referred to as " DSP ") 130, EEPROM (Electrically Erasable Programmable Read-OnlyMemory) 140, RAM (Random Access Memory) 141, mode selector switch 150, counter 160 and decision circuit 170.
Relay a110 and relay b111 are the switching parts that is used to switch 3 phase power wirings (being connected to 3 phase power wirings via power supply terminal 42) and the annexation of power line communication modem 100.Then, according to the setting of relay a110 and relay b111, power line communication modem 100 just selects any two power wirings in the 3 phase power wirings 10,11,12 to connect (connecting via power supply terminal 42).For example, by relay a110 being connected to " 1a ", relay b111 being connected to " 2a ", the Department of Communication Force of power line communication modem 100 (coupling circuit 120, transmit amplifier 132, filter 135, modulation circuit 131, demodulator circuit 136, DSP130, EEPROM140, RAM141, mode selector switch 150, counter 160, decision circuit 170), via power supply terminal 42a with 3 mutually power wiring 12 link to each other, link to each other with 3 phase power wirings 11 via power supply terminal 42b.In addition, for example, by relay a110 being connected to " 1b ", relay b111 is connected to " 2b ", the Department of Communication Force of power line communication modem 100, via power supply terminal 42b with 3 mutually power wiring 11 link to each other, link to each other with 3 phase power wirings 10 via power supply terminal 42c.In addition, by relay a110 being connected to 1a, relay b111 is connected to 2b, the Department of Communication Force of power line communication modem 100, via power supply terminal 42a with 3 mutually power wiring 12 link to each other, link to each other with 3 phase power wirings 10 via power supply terminal 42c.
Coupling circuit 120 is made up of transformer and capacitor etc., separates source power supply and the high-frequency signal supplied with on the power wiring.Modulation circuit 131 is modulated into high-frequency signal with the digital signal of DSP130 output.Transmit amplifier 132 will be sent to power wiring via coupling circuit 120 with the high-frequency signal after modulation circuit 131 modulation.Filter 135 is that only will communicate by letter among via the power wiring institute high frequency signals transmitted high frequency of employed frequency band is passed to the band pass filter of demodulator circuit 13.In addition, the demodulation that demodulator circuit 136 carries out by the high-frequency signal of filter 135 is transformed into digital signal and is input to DSP130.In addition, DSP130 handles the signal of being imported from control circuit 1110 and reaches the signal of being imported from demodulator circuit 136.
In EEPROM140, non-volatile ground is in store in advance to be used to realize the data of the processing of DSP130.In addition, RAM141 and DSP130 carry out intercourse (RAM141 is as the service area performance function of DSP130) of data.
Mode selector switch 150 is that expression power line communication device 1100 is in the mode selector switch of which kind of state in common originate mode and the distribution preference pattern, if open the power supply of control circuit 1110 then carries out power communication modulator-demodulator 100 according to the state of mode selector switch 150 start up process.
Counter 160 is to the counter that power line communication modem 100 oneself detects the number of times of the signal of coming self or the number of times that received is successfully counted, and (according to the setting of relay a110 and relay b111 and definite 3 kinds) has three counters (1,2,3) to each condition of contact of the Department of Communication Force of 3 phase power wirings and modulator-demodulator 100.
Decision circuit 170 is the decision circuits that detect number of times (perhaps receiving number of success at most) at most, detects the maximum of the count value of counter 3 by counter 1, if this maximum just sends the signal of representing this meaning to DSP130 more than or equal to the value of regulation.Then, DSP130 accepts the signal of the maximum of the above-mentioned counter of expression more than or equal to the meaning of the value of regulation, and will become and obtain the such switching signal of peaked condition of contact and send to switch a110 and switch b111 as switching part, via control circuit 1110 this condition of contact is presented on the I/O1160 simultaneously.
Next, utilize Fig. 4, Fig. 5 to describe with regard to the concrete formation of the power line communication device 2100 (2200) of the present invention the 1st embodiment.
Fig. 4 is the figure of concrete formation that is used to illustrate the power line communication device 2100 of present embodiment.Such as shown, power line communication device 2100 possesses: the power line communication modem 200 with Department of Communication Force; To bring into play the control circuit of controlling 1111 that self moves of function as the indoor set of air-conditioning system; The input/output interface of this control circuit 1111 (I/O) 1162; The fan 1170 that moves according to the instruction of control circuit 1111; The noise filter 1151 of fan 1170 usefulness; Be used to set the refrigerant system diverter switch 1163 of refrigerant system; And the power supply terminal 43 (a, b) that is connected with Monophase electric power distribution 20,21.And, according to the setting of refrigerant diverter switch 1163, with power line communication device (off-premises station) 1100 and a plurality of power line communication devices (indoor set) 2100 corresponding to same refrigerant system (narrating in the back) about this method that is mapped.In addition, establish power line communication device 2200 and have the formation identical with power line communication device 2100.
Next, the concrete formation of the power line communication modem 200 that power line communication apparatus 2100 has is described.Fig. 5 is the figure that is used to illustrate the concrete formation of power line communication modem 200.Such as shown, power line communication modem 200 possesses: coupling circuit 120, transmit amplifier 132, filter 135, modulation circuit 131, demodulator circuit 136, DSP130, EEPROM140 and the RAM141 (formation of power line communication modem 200, except that have above-mentioned switch a110 and formation switch b111, mode selector switch 150, counter 160 and decision circuit 170 as switching part with power communication modulator-demodulator 100 not identical) identical with power line communication modem 100.
Next, utilize above-mentioned Fig. 1 to 4 and Fig. 6 just to use the flow process of the processing that the control system of the power line communication device that the present invention the 1st embodiment is suitable for carries out to describe.Fig. 6 is the figure of selection handling process of the power wiring of the power line communication device 1100 that is used to illustrate that present embodiment is suitable for.
The air-conditioning system of present embodiment is after the power wiring end of job in building, accept the setting of the refrigerant system of air-conditioning system before the power connection of air-conditioning system.Particularly, the refrigerant diverter switch 1163 of the II shape plug-in type switch 1161 of power line communication device (off-premises station) 1100 and power line communication device (indoor set) 2100 is set so that can discern corresponding (be located at and be set with the address date that identification is in the device of same refrigerant system on II shape plug-in type switch 1161 and the refrigerant diverter switch 1163) of the power line communication device 1100 that is in same refrigerant system and power line communication device 2100.In addition, be located in this air-conditioning system, accept the setting (establish mode selector switch 150 and be configured to the distribution preference pattern at first) of the communication pattern diverter switch 150 of the power line communication modem 100 that power communication device (off-premises station) 1100 has in advance.
So, if the power supply of this air-conditioning system is switched on (S1), just then carry out the power connection of standby up to the control circuit 1110 that receives power line communication device (off-premises station) 1100.Then, control circuit 1110 at power line communication device (off-premises station) 1100 has been switched under the situation of power supply, and control circuit 1110 outputs to power line communication modem 100 with starting order and makes power line communication modem 100 startings and enter S3 (S2).In addition, also be made as about the control circuit 1111 of power line communication device (indoor set) 2100 and behind power connection, starting order outputed to power line communication modem 200 and make power line communication modem 200 startings.
In S3, the DSP130 that receives starting command from control circuit 1110 carries out the pattern affirmation of mode selector switch 150.Then, DSP130 is detecting mode selector switch 150 under the situation of distribution preference pattern, enter S4, under the situation (situation of originate mode usually) that is not the distribution preference pattern, just carry out common starting (with expression is that the signal of normal mode sends to control circuit 1110, and the communication modem as the transmitting-receiving of the common control signal of carrying out air-conditioning system moves afterwards).
In S4, DSP130 begins the processing under the distribution preference pattern.Particularly, DSP130 sends to relay a110 and relay b111 with switching signal, and sets relay a110 for " terminal 1a ", relay b111 is set for " terminal 2a ".Afterwards, DSP130 is via modulation circuit 131, transmit amplifier 132 and coupling circuit 120, and the connection test signal that sends stipulated number in turn is till the stipulated time process (S5).In addition, be located at and contain the address date that the power line communication device (off-premises station) 1100 that has sent is discerned in this test signal.In addition, though be not particularly limited, be made as more than twice at least about the stipulated number that sends test massage.
On the other hand, the power line communication modem 200 of power line communication apparatus (indoor set) 2100,2200, under the situation that receives power line communication device (off-premises station) 1100 test signals that sent, judge that whether this test signal is the signal that sends from the power line communication device (off-premises station) 1100 that is in same refrigerant system (address date based on the device of the same refrigerant of being in of setting of the address signal that comprises the test signal and the refrigerant diverter switch 1163 that self has system is judged).Then, power line communication modem 200, being judged as the test signal that receives is under the situation of power line communication device (off-premises station) 1100 signals that sent that are in same refrigerant system, and the answer signal of the reception success of expression test signal (below be referred to as " ack signal ") is sent (communication modem 200 is whenever the reception of the test signal of being sent that can confirm stipulated number just sends ack signal in turn) to power line communication device (off-premises station) 1100.
The power line communication modem 100 of power line communication device (off-premises station) 1100 is input to DSP130 via coupling circuit 120, filter 135 and demodulator circuit 136 with these ack signals.The detection time that the transmission of the test signal that DSP130 has carried out from S5 begins to play regulation through till whether be signal judgment (S6) to self sent.
In addition, the ack signal that DSP130 imports whenever being judged as is the signal that self is sent, and just the value of the counter 1 of counter 160 is upwards added one (establishing counter 1 is configured to the ack signal that relay a110 sets under the condition of contact that " terminal 1a ", relay b111 set " terminal 2a " for is counted).Then, DSP130 will beginning from S5 sends and connects the number of times that test signal plays through detected ack signal between till the detection time of regulation and be recorded in (S7) in the counter 1.
Then, DSP130 under the situation of the detection time of having passed through afore mentioned rules, sends to relay a110 and relay b111 with switching signal, and sets relay a110 for " terminal 1b ", sets relay b111 for " terminal 2b " (S8).
In addition, DSP130 and S5 are same, and via modulation circuit 131, transmit amplifier 132 and coupling circuit 120, the connection test signal that sends stipulated number in turn is till the stipulated time process (S9).
On the other hand, the power line communication modem 200 of power line communication device (indoor set) 2100,2200, with above-mentioned same, being judged as the test signal that receives is under the situation of power line communication device (off-premises station) 1100 signals that sent that are in same refrigerant system, and power line communication device (off-premises station) 1100 is sent ack signal in turn.
Afterwards, power line communication device (off-premises station) 1100 carries out the processing same with S6 (S10).In addition, the ack signal that DSP130 imports whenever being judged as is the signal that self is sent, and just the value of the counter 2 of counter 160 is upwards added one (establishing counter 2 is configured to the ack signal that relay a110 sets under the condition of contact that " terminal 1b ", relay b111 set " terminal 2b " for is counted).Then, the number of times of detected ack signal was recorded in (S11) in the counter 2 between the transmission of the connection test signal that DSP130 will be from S9 began till through the detection time of regulation.
Next, DSP130 under the situation of the detection time of having passed through afore mentioned rules, sends to relay a110 and relay b111 with switching signal, and sets relay a110 for " terminal 1a ", sets relay b111 for " terminal 2b " (S12).Then, DSP130 carries out and the same processing (S13, S14) of S5～S6.In addition, the ack signal that DSP130 imports whenever being judged as is the signal that self is sent, and just the value of the counter 3 of counter 160 is upwards added one (establishing counter 3 is configured to the ack signal that relay a110 sets under the condition of contact that " terminal 1a ", relay b111 set " terminal 2b " for is counted).Then, the number of times of detected ack signal was recorded in (S15) in the counter 3 between the transmission of the connection test signal that DSP130 will be from S13 began till through the detection time of regulation.
Afterwards, the decision circuit 170 of power line communication modem 100 is obtained the reception number of times of the ack signal that is write down in the counter 1 to 3 of counter 160.In addition, the difference value " K " of decision circuit 170 maximum (maximum of the reception number of times that is write down in the counter 1 to 3) that calculates the reception number of times of obtained ack signal and other values (obtained maximum reception number of times in addition) (S16).
In addition, whether decision circuit 170 judges the difference value " K " that calculates more than or equal to the threshold value of stipulating (for example being set at " 10 times "), under situation more than or equal to the threshold value of stipulating, and the processing that enters S18.On the other hand, decision circuit 170 turns back to S4, the processing of repeatedly above-mentioned S4 to S16 (S17) under the situation that the difference value that calculates " K " lacks than the threshold value of regulation.
When in S17, be judged to be under the situation of difference value " K " more than or equal to the threshold value (for example being set at " 10 times ") of regulation, decision circuit 17 will be fixed in to counter give peaked relay a110 and relay b111 condition of contact the meaning signal (for example, the reception number of times that is write down in counter 1 is under the peaked situation, relay a110 is set for " terminal 1a ", relay b111 is set for the signal of the meaning of " terminal 2a ") send to DSP130.Then, the signal of the meaning of the fixedly connected condition that DSP130 is sent based on decision circuit 170 is set switching signal output (for example, set with output relay a110 set for " terminal 1a ", relay b111 set for the switching signal of " terminal 2a ").In addition, decision circuit 17 outputs to I/O1160 via the reception number of times of the ack signal that is write down in DSP130, the counter 1 to 3 of control circuit 1110 with counter 160.Then, the reception number of times of counter 1 to 3 ack signal of being counted and condition of contact are mapped are presented at the display unit (for example liquid crystal panel) that I/O1160 has and go up (S18).If the operator watches this demonstration II shape plug-in type switch 1161 to be set for the condition of contact of maximum reception number of times, even if then behind dump, connected once more under the situation of power supply and also will keep best condition of contact power line communication device (off-premises station) 1110.
In addition, II shape plug-in type switch 1161 is under the situation of having accepted the setting of condition of contact from the operator (for example, be provided with and set the switch that is over, and press down to accept to set by it be over), to the signal of control circuit 1110 these meanings of output.Then, control circuit 1110 cuts off its own power source (perhaps also can with manually cutting off), and end process (S19).
Afterwards, after the mode selector switch 150 of power line communication modem 100 being switched to normal mode, (be located among the S18 by the operator, set II shape plug-in type switch 1161 for attached and the condition of contact of maximum reception number of times by the operator), under the situation that the power supply of control circuit 1110 is switched on (S2), control circuit 1110 carries out the processing of above-mentioned S3, the starting normal mode also is used to control the data communication (after automatic address distribution, controlling the communication of the data of temperature or air quantity etc.) of air-conditioning system.
In addition, though in the explanation of present embodiment, be that example is illustrated with the situation of manually setting II shape plug-in type switch 1161, also can constitute power line communication device 1100 and self automatically set II shape plug-in type switch 1161 with the operator.For example, also can be in the S18 of Fig. 6, the signal of the meaning of the fixedly connected condition that the DSP130 of power line modem 100 is sent based on decision circuit 170 carries out switching signal output, simultaneously the condition of contact that 1110 outputs receive from decision circuit to control circuit.Then, control circuit 1100 is set II shape plug-in type switch 1161 for receive condition of contact, starts so usually to constitute.
Like this, according to present embodiment, in the power line communication device 1100 that on 3 phase power wirings, is connected, will be used to confirm that communication object is connected the test signal which goes up mutually and sends repeatedly in official hour by each condition of contact.Then, will count by each condition of contact, and judge that this counts for maximum condition of contact, is connected to power wiring with the condition of contact of being judged for the reception number of times of the ack signal of the above-mentioned test signal that sends.
For this reason, even if the communication of as power wiring, under the more environment of noise, carrying out, the connection phase that also can determine communication object accurately (for example, even if under the situation that noise takes place brokenly, by sending repeatedly test signal, and counting is for the ack signal of this signal, and the accuracy of detection of ack signal will improve).
In addition, carry out demodulation with 136 pairs of data that receive via power wiring of demodulator circuit of power line modem 100 in the present embodiment, and use through demodulated data to detect whether be ack signal.For this reason, survey even if under the more environment of noise, also can prevent the flase drop of ack signal, and can determine connecting the phase of communication object accurately.
In addition, in the present embodiment, through under the maximum of the reception number of times of the ack signal of counting and other difference value little situations of threshold values, then be used to connect the processing of affirmation once more, and do not carry out determining of best condition of contact than regulation through the reception number of times of counting.For this reason, even if taking place brokenly under such situation, can prevent that also condition of contact from being determined mistakenly such as noise.
Like this, the foregoing description that is suitable for according to the present invention in the communication of using the polyphase electric power distribution to carry out, just can determine connecting the connection phase of communication object, accurately so just can improve the reliability of communication.That is, just can utilize the polyphase electric power distribution according to present embodiment, realize the communication of the data of the reliabilities of having relatively high expectations such as control signal.
(embodiment 2)
Then, describe with regard to the 2nd embodiment of the present invention.Fig. 7 has been to use the summary pie graph of the control system of the power line communication device that the present invention the 2nd embodiment is suitable for.In addition, be located in the explanation of this 2nd embodiment, use same Reference numeral for the formation identical with the 1st embodiment.
Such as shown, the summary of the present invention the 2nd embodiment constitutes, and is provided with on the parts this point that power line/wireless conversion bridgt circuit (being referred to as " bridgt circuit " below) 50,51 is used as using by the high-frequency transmission signal between 3 phase 200V distributions and single-phase 200V distribution different at the capacitor 30,31 that replaces the 1st embodiment shown in Figure 1.And this 2nd embodiment is not as above-mentioned the 1st embodiment, and power line communication apparatus 1100 sends test massage and receives ack signal for this test signal, but the parts that bridgt circuit 50 is sent test massage are set.Then, the reception number of times that power line apparatus 1100 constitutes the test signal that bridgt circuit 50 is sent carries out instrumentation, and uses this reception number of times to determine best condition of contact.In addition, this 2nd embodiment, about removing the different this point of using by the high-frequency transmission signal between above-mentioned 3 phase 200V distributions and the single-phase 200V distribution of parts, different formations in addition with the process of determining best condition of contact are identical with the 1st embodiment.In addition, be that the center describes with dissimilarity below with the 1st embodiment.
At first, the formation with regard to bridgt circuit 50 describes.Fig. 8 is the figure that is used to illustrate the formation of the bridgt circuit 50 that the control system of having used the power line communication device 1100 that this 2nd embodiment is suitable for has.
Such as shown, bridgt circuit 50 has power line communication modem 500, microcomputer 510, radio-circuit 515, radio-circuit antenna 516 and power supply terminal 517.Microcomputer 510 is transformed into wireless communication protocol with power line communication protocols.In addition, microcomputer 51 has as the RAM511 that realizes the service area that bridging functionality is used.
In addition, illustrated power line communication modem 500 has added the mode selector switch 520 that expression bridgt circuit 50 is in a certain side's state in common originate mode and the distribution preference pattern on the modulator-demodulator 200 that the power line communication device (indoor set) 2100 of the 1st embodiment has.Then, bridgt circuit 50 is if power supply is switched on the state that then is set according to mode selector switch 520 and moves.For example, if mode selector switch 520 is in the state of distribution preference pattern, then the power line communication modems in the bridgt circuit 50 500 continue to send and are used for test signals that distribution selects till power supply is closed (also can constitute send test massage up to through till the stipulated time).
In addition, though in this 2nd embodiment, with the power supply terminal 517 of bridgt circuit 50 be connected to 3 phase power wirings 10 with 3 mutually the situation of power wiring 11 be that example describes, be not to be defined in this especially.For example, the power supply terminal 517 of bridgt circuit 50 also can be connected to 3 phase power wirings 10 and 12 (in addition, for example also can be connected to 3 phase power wirings 11 and 12).In addition, establish bridgt circuit 51 and have the formation same (in this 2nd embodiment, also bridgt circuit 51 can be made as the function that the function that has from bridgt circuit 50 has been removed the distribution preference pattern of the transmission of carrying out test signal) with bridgt circuit 50.
Next, just the power line communication device 1100 of the present invention the 2nd embodiment determine to the handling process used of the connection distribution of 3 phase power wirings describe.
Fig. 9 is the figure of the handling process of the power line communication device 1100 that is used to the to illustrate present embodiment connection distribution that carries out directed really 3 phase power wirings.
At first, carry out the processing (S100 to S103) identical with the S1 to S4 of the 1st embodiment illustrated in fig. 6.In addition, establish the bridgt circuit 50 shown in Fig. 7,8, behind the power connection of air-conditioning system, the power supply of the control circuit 1110 of power line communication device (off-premises station) 1100 is switched on power supply before being switched on.And, establish bridgt circuit 50 and send test massage till power supply is cut off continuously with the interval of stipulating.In addition, the handling process that sends test massage of bridgt circuit 50 is narrated in the back.
Afterwards, power line communication device 1100 carries out the detection (S104) of the test signal of bridgt circuit 50 transmissions.Particularly, the power line communication modem 100 of power line communication device (off-premises station) 1100 is input to DSP130 via coupling circuit 120, filter 135 and demodulator circuit 136 with the test signal that bridgt circuit 40 sends.Then, DSP130 judge whether for the test signal of giving self up to the stipulated time through till.
Then, power line communication device 1100 carries out the processing (S105 to S106) identical with S7 to S8 illustrated in fig. 6, carries out the detection (S107) of the test signal that sends with the same bridgt circuit of above-mentioned S104 50.Next, power line communication device 1100 carries out the processing (S108 to S109) identical with the S11 to S12 of Fig. 6.In addition, power line communication device 1100 carries out the detection (S110) of the test signal that sends with the same bridgt circuit of above-mentioned S104 50, afterwards, similarly handles (S111 to S114) with the S15 to S18 of Fig. 6.Afterwards, power line communication device 1100 cuts off the power supply (S115) of control circuit 1110, and end process.
Next, the action that bridgt circuit 50 carries out is described.Figure 10 is the figure that is used to illustrate the action of bridgt circuit 50.In addition, the bridgt circuit 50 of establishing this 2nd embodiment carries out initial setting (mode selector switch 520 of establishing bridgt circuit 50 is configured to the distribution preference pattern) by the operator after being connected to 3 phase power wirings 10,11.
So, if the power supply of air-conditioning system is switched on, bridgt circuit 50 just carries out standby and is switched on (S120) up to its own power source.Then, be switched on back (S121), the pattern that sets on the DSP130 detecting pattern diverter switch 520 of modulator-demodulator 500 at bridgt circuit 50 power supplys.Then, the pattern that detects mode selector switch 520 at DSP130 is under the situation of distribution preference pattern, enters the processing of S123.On the other hand, the pattern that detects mode selector switch 520 at DSP130 is not under the situation (situation of originate mode usually) of distribution preference pattern, makes common pattern starting (S122).In addition, bridgt circuit 50 under the situation of having carried out common starting, receives the control signal that power line communication device 1110 sends, and via bridgt circuit 51 this control signal is sent to power line communication device 2100.In addition, bridgt circuit 50 receives the control signal that power line communication device 2100 sends via bridgt circuit 51, and this control signal is sent to power line communication device 1100.
In S123, the DSP130 of the power line communication modem 500 that bridgt circuit 50 has sends continuously and is connected test signal (S123) via modulation circuit 131, transmit amplifier 132 and coupling circuit 120 interval with regulation.
Afterwards, bridgt circuit 50 continues the transmission of test signal till power supply is cut off with the interval of regulation, manually or automatically (for example, also the stipulated time that can begin the transmission from test signal is carried out instrumentation, through later power supply is automatically cut off at the appointed time) cut off end process (S124) under the situation of power supply.Afterwards, if the operator switches to common originate mode with the mode selector switch 520 of bridgt circuit 50, just when the common running of air-conditioning system, the relay and control signal moves here between power line communication device (off-premises station) 1100 and power line communication device (indoor set) 2100.
According to this 2nd embodiment,, the parts that send test massage continuously with predetermined distance are set on this bridgt circuit 50 like this in order to use the bridgt circuit of between 3 phase 200V distributions and single-phase 200V distribution, using 50,51 by the transmission signals of high frequency.In addition, bridgt circuit 50 selects arbitrarily two power wirings (among this 2nd embodiment is power wiring 10 and 11) to connect among 3 phase power wirings 10,11,12.Then, power line communication device 1100 changes the condition that connects and receives the test signal that bridgt circuit 50 sends, and determines to detect with maximum number of times the condition of contact of signal.
For this reason, in this 2nd embodiment, be connected at the modulator-demodulator 100 of power line communication device 1100 under the situation (being 3 phase power wirings 10,11 in example shown in Figure 7) of the identical distribution of power wiring that is being connected with bridgt circuit 50, just number of times detects the connection test signal at most, and can determine best condition of contact (because power line communication device 1100 carries out power line communication via bridgt circuit 50, so need be connected in the identical distribution phase of power wiring that is being connected with bridgt circuit 50).Then, the modulator-demodulator 100 of power line communication device 1100 just can be realized the communication that reliability is high by power wiring 10,11 being determined mutually as connection and being connected.In addition, in this 2nd embodiment, with above-mentioned the 1st embodiment compare can determine communication object with more easy method (be send test massage and detect ack signal) for this test signal in above-mentioned the 1st embodiment connection mutually.
(embodiment 3)
Next, describe with regard to the 3rd embodiment of the present invention.Figure 11 has been to use the summary pie graph of the control system of the power line communication device that the present invention the 3rd embodiment is suitable for.In addition, be located in the explanation of this 3rd embodiment, use same Reference numeral for the formation identical with the 2nd embodiment.
Such as shown, the 3rd embodiment of the present invention, as the power line communication device 2110 of indoor set performance function (a, b, c ..., n) be not to be connected to single-phase 200V but to be connected to 3 phase 200V distributions.In addition, the 3 phase 200V distributions that connecting power line communication device 2110 are connected to the distribution transformer system different with the 3 phase 200V distributions that connecting power line communication device (off-premises station) 1100.In addition, be provided with the power line communication modem 100 identical in the inside of power line communication device (indoor set) 2110 with power line communication device (off-premises station) 1100.
Then, the power line communication device (off-premises station) 1100 of this 3rd embodiment carries out and the identical processing of above-mentioned the 2nd embodiment shown in Fig. 9.In addition, in this 3rd embodiment, about power line communication device (indoor set) 2110, also constitute and carry out the processing identical, and determine the connection distribution of best condition of contact with the power line modem 100 of above-mentioned the 2nd embodiment illustrated in fig. 9.
So, according to this 3rd embodiment, even if owing between the power line communication device of the 3 phase power wirings that are connected to different distribution transformers system, also can determine best condition of contact, so can carry out the high communication of reliability.
(embodiment 4)
Then, describe with regard to the 4th embodiment of the present invention.Figure 12 has been to use the summary pie graph of the control system of the power line communication device that the present invention the 4th embodiment is suitable for.Such as shown, this the 4th embodiment is in order to carry out the communication of high-frequency signal between 3 phase power wirings of different distribution transformers system, replace bridgt circuit 50,51 and use on capacitor 30,31 this point as the capacitive coupling parts different with above-mentioned the 3rd embodiment.In addition, in this 4th embodiment, employing be provided with connect test signal generation circuit (below, be referred to as " signal generating circuit ") different with above-mentioned the 3rd embodiment on 600 the formation this point, wherein, this signal generating circuit sends and is used for power line communication device 1100 and power line communication device 2110 and 3 test signals determined of the connection of power wiring mutually.And about the formation except that above-mentioned dissimilarity, the 4th embodiment of the present invention is identical with above-mentioned the 3rd embodiment.
So, just describe with the different capacitor 30,31 of the 3rd embodiment and the formation of signal generating circuit 600.The capacitor 30,31 of the 4th embodiment shown in Figure 12 is identical with the 1st embodiment's of Fig. 1.In addition, the formation of signal generating circuit 600, with illustrated power line communication modem 500 substantially the same (power line communication modems 500 among the 2nd embodiment of Fig. 8, except that the transmission that connects test signal, also switch to common originate mode and used in common power line communication, with respect to this, signal generating circuit 600 is in the transmission this point difference that only is used to connect test signal).
Next, the power line communication device 1100 of the 4th embodiment of the present invention just be used for determine that the handling process to the connection distribution of 3 phase power wirings describes.
The handling process of the connection distribution of the directed really 3 phase power wirings of power line communication device 1100 of this 4th embodiment, except that different with above-mentioned the 3rd embodiment at the transmission source of the test signal of power line communication device 1100, identical with the flow process shown in Fig. 9 (be that bridgt circuit 50 sends test massage continuously in the 3rd embodiment, but in this 4th embodiment, then be that signal generating circuit 600 sends test massage).
Particularly, be switched at the power supply of air-conditioning system, after signal generating circuit 600 its own power source are switched on, power line communication device 1100 and power line communication device 2110 sent test massage till power supply is cut off.Afterwards, power line communication device 1100 and power line communication device 2110 carry out the flow process same with Fig. 9 (in S104, S107, S110, not being to detect from the test signal of bridgt circuit 50 but the test signal that detection signal generation circuit 600 is sent).In addition, signal generating circuit 600 is cut off the electricity supply after the condition of contact of power line communication device 1100 and power line communication device 2110 is fixed, and does not use when the control signal of the air-conditioning system under starting is usually communicated by letter.
So, in this 4th embodiment, power line communication device 1100 and power line communication device 2110 constitute reception in the test signal that signal generating circuit 600 sends and detect to set under the condition of contact of number of times when maximum and connect.For this reason, in the example shown in Figure 12, power line communication device 2110, under the situation that is connected to the distribution phase identical with the power wiring that is connecting signal generating circuit 600, number of times detects the connection test signal at most, and is giving upward setting connection of these 3 phase power wirings that detect number of times at most (being 10,12 in the example at Figure 12).In addition, establish and connecting 3 phase power wirings of power line communication device 2110 and being connected of capacitor 30,31, be connected to the distribution phase identical (being 10,12) in the example of Figure 12 with the power wiring that is connecting signal generating circuit 600.
In addition, power line communication device 1100, for via capacitor 30 and 31 acceptance test signals, and be connected under the situation of the distribution identical with the power wiring that is connecting capacitor 30 and 31, number of times detects the connection test signal at most, is connected to and gives these 3 phase power wirings that detect number of times at most (being 10,11) in the example of Figure 12.For this reason, power line communication device 1100 just can be gone up by power wiring mutually in the other side's connection respectively via capacitor 30 and 31 with power line communication device 2110 and communicate.
As described above like that, in the present invention, on the power line communication device that is connected in 3 phase power wirings, be provided with: the parts of selecting the condition of contact to 3 phase power wirings to connect; The condition of contact of having selected is detected the connection confirmation signal (test signal or ack signal) of sending out regulation repeatedly at the appointed time and the parts that detected reception number of times carried out instrumentation one by one; Based on this reception number of times of instrumentation determine the parts of best condition of contact; And fixedly connected under this fixed condition of contact, show the parts of this condition of contact simultaneously.For this reason, even if in the communication that utilizes the bigger power wiring of noise, can determine that also the connection that communicates with communication object mutually (for example, even if under the situation that noise takes place brokenly, accuracy of detection is improved by instrumentation test signal (ack signal) repeatedly), so can determine the connection phase of communication object accurately.
In addition, in the present invention, the data that receive via power wiring are carried out demodulation, and use through demodulated data to detect whether be test signal (perhaps ack signal) with the demodulator circuit of power line modem.For this reason, even if under the more environment of noise, can prevent that also the flase drop of test signal (perhaps ack signal) from surveying, and can determine connecting the phase of communication object accurately.
In addition, in the present invention, the difference value that receives number of times (the reception number of times beyond the maximum) through the maximum of the reception number of times of the ack signal of instrumentation and other than the little situation of the threshold value of regulation under, then be used to once more connect the processing of affirmation and do not carry out the definite of optimum condition of contact.For this reason, even if taking place brokenly under such situation, can prevent that also condition of contact from being determined mistakenly such as noise.
So, according to the present invention, even if under the more environment of such noise, also can determine connecting the power wiring phase of communication object such as power wiring.And, can carry out power line communication mutually by enough determined power wirings.For this reason, just can alleviate and send the generation that flase drop is surveyed in the carrier wave detection of carrying out before the signal of communication, so the reliability of communication is improved (under the situation that the phase that is connecting communication object can't be determined or under the situation of surveying with flase drop about communicating mutually, it is more that the flase drop that detects because of carrier wave is surveyed the situation that garble takes place).
So, according to the present invention, even if under the more environment of noise as power wiring, also can carry out communication in the 3 phase power wirings reliably.For this reason, for example at present embodiment (1 to 4) even if in also can be suitable for the present invention in the communication of control signal of the illustrated various systems (for example air-conditioning system) that needing like that high reliability.And, for example, under situation about the present invention being applicable to, just no longer need to carry out to make the wiring installation of the connecting line that control signal communicates by letter in being used to of carrying out between indoor set and the off-premises station such as the such air-conditioning system of present embodiment (1 to 4).
Thereby (for example be arranged at the air-conditioning system in office or shop, the situation that is connecting many indoor sets on an off-premises station is more just can significantly to reduce the engineering time that is used to be provided with various systems (for example air-conditioning system) and operating expenses.And, owing to need long distance ground to arrange connecting line mostly so cost is long-time mostly in construction).Particularly, in renewal (replacing) engineering of various systems (for example air-conditioning system), (be not limited to air-conditioning system, be provided with in renewal under the situation of various systems, construction space can't be obtained mostly fully just can significantly to shorten the engineering time.In addition, under the situation of the replacing engineering that building has been finished, the operation of the very narrow spatial placement connecting line that sometimes also need be in ceiling waits etc., it is very big just to become the time of construction cost).
And then, the foregoing description that is suitable for according to the present invention, owing to (for example do not need to make between the control signal communicating devices, between the off-premises station and indoor set of air-conditioning system) the wiring installation of connecting line, so can prevent the bad construction of the system that the mistake wiring because of connecting line causes fully or break down.
In addition, the present invention is not limited to embodiment discussed above, can carry out various distortion in the scope of purport of the present invention.For example, though in the 1st embodiment of the present invention, to using the example of capacitor 30 and 31 to be illustrated for transmission signals between 3 phase power wirings 10,11,12 and Monophase electric power distribution 20,21,22 by high frequency, but for example, also can as this 2nd embodiment, in the parts that the transmission signals that makes high frequency communicates, use bridgt circuit.
In addition, though in the present embodiment,, be not to be defined in this especially to be that example is illustrated holding situation about communicating between the power line communication device that is connected on the power wiring of different transformers.For example, the present invention, (for example also can be suitable for holding under the situation about communicating between a plurality of power line communication devices that connected on the 3 phase power wirings of identical transformer, if device with power line communication modem 100 shown in Fig. 1 and the device with power line communication modem 200 are connected to same 3 power wirings mutually, the connection that communication object is determined in transmission that just can be by test signal and the reception of ack signal mutually).
In addition, though in the present embodiment, situation about communicating with two power wirings that utilize among the 3 phase power wirings is that example is illustrated, and power wiring also can be with the 3 above mutually heterogeneous power wirings that constitute.
In addition, though in the present embodiment, be that example is illustrated with the situation of between a power line communication device 1100 and many power line communication devices 2100 (perhaps 2110), carrying out power line communication, be not to be defined in this especially.For example, power line communication device 1100 and power line communication device 2100 (perhaps 2110) both can communicate one to one, also can be in addition a plurality ofly to communicate a plurality of.
In addition, though in the present embodiment, to be built-in with the power line communication modem 100 that carries out power line communication and 200 situation in power line communication device (off-premises station) 1100 and power line communication device (indoor set) 2100 is that example is illustrated, and constitutes but power line communication modem 100 and 200 also can be used as the unit of outer setting.
In addition, though in the explanation of embodiments of the invention, the situation that is applied to the air-conditioning system of refrigerant mode with power line communication device is that example is illustrated, and is not to be defined in this especially.So long as the device that utilizes the polyphase electric power distribution to carry out data communication gets final product.For example, can also be applicable to prefabricated cold store used in hotel or eating house etc. large-scale freezing/refrigerating equipment, factory or building in used extensive air-conditioning equipment (for example draft fan etc.).
As described above such, according to the present invention, the power line communication device that overlapping high-frequency signal on two power wirings of polyphase electric power distribution carries out be connected on the polyphase electric power distribution and each device between under the situation about communicating, perhaps under the situation about communicating between the power line communication device that on the power line communication device that is connected on the polyphase electric power distribution and single-phase distribution, is connected, the reliability of communication is improved.
Though carried out above-mentioned record with regard to embodiment, the present invention is not limited to this, obviously in the scope of the claim of spirit of the present invention and apposition, can carry out various changes and correction for a person skilled in the art.

Claims (9)

1. a power line communication device has the communication component that overlapping high-frequency signal communicates on two power wirings among the polyphase electric power distribution, and this power line communication device is characterised in that:
With the multiple condition of contact that connects two power wirings among above-mentioned communication component and the above-mentioned polyphase electric power distribution above-mentioned communication component is connected to above-mentioned polyphase electric power distribution in turn, carry out communication more than at least twice with each condition of contact, detect the setting that is connected that the maximum condition of contact of number of times carries out above-mentioned communication component and above-mentioned polyphase electric power distribution with reception.
2. control system, between first power line communication device more than at least one, that have communication component and second power line communication device more than at least one, that have communication component, high-frequency signal overlapped on the power wiring communicate, this control system is characterised in that:
Above-mentioned first power line communication device, have select with above-mentioned second power line communication device between the set parts of a certain pattern in the common pattern that communicates and the distribution preference pattern that the power wiring that will be connected is selected,
Above-mentioned first power line communication device, be configured at above-mentioned set parts under the situation of distribution preference pattern, the communication component change condition of contact that self is had also is connected to power wiring in turn, the reception of the affirmation signal of the regulation that detects in the stipulated time one by one to be sent by this above-mentioned condition of contact that has connected, by the above-mentioned condition of contact reception number of times of the affirmation signal of this regulation that has detected of instrumentation one by one, determine this reception number of times of instrumentation be maximum condition of contact, and set being connected of above-mentioned communication component and above-mentioned power wiring with this fixed condition of contact.
3. the control system of putting down in writing according to claim 2 is characterized in that:
The above-mentioned communication component of above-mentioned first power line communication device has the parts that send the connection test signal under the situation that is configured to above-mentioned distribution preference pattern,
The above-mentioned communication component of above-mentioned second power line communication device has and returns with from the parts at the answer signal of this connection test signal as the destination,
The affirmation signal of afore mentioned rules is meant the above-mentioned answer signal that above-mentioned communication component sent of above-mentioned second power line communication device.
4. the control system of putting down in writing according to claim 3 is characterized in that:
Above-mentioned first power line communication device is connected to the polyphase electric power distribution, and above-mentioned second power line communication device is connected to the Monophase electric power distribution,
Two power wirings that use in the power line communication of above-mentioned polyphase electric power distribution, with the power line communication of utilizing above-mentioned Monophase electric power distribution in two power wirings using be connected by the capacitive coupling parts mutually.
5. the control system of putting down in writing according to claim 3 is characterized in that:
Above-mentioned first power line communication device is connected to the polyphase electric power distribution, and above-mentioned second power line communication device is connected to the Monophase electric power distribution,
Have by radio communication connect two power wirings using in the power line communication of above-mentioned polyphase electric power distribution, with first and second power line/wireless conversion bridger that utilizes two power wirings that use in the power line communication of above-mentioned Monophase electric power distribution,
Above-mentioned first power line/wireless conversion bridger is connected to two power wirings that use in the power line communication of above-mentioned polyphase electric power distribution, and above-mentioned second power line/wireless conversion bridger is connected to two power wirings that use in the power line communication of above-mentioned Monophase electric power distribution.
6. the control system of putting down in writing according to claim 2 is characterized in that:
Above-mentioned first power line communication device is connected to the polyphase electric power distribution, and above-mentioned second power line communication device is connected to the Monophase electric power distribution,
Have by radio communication connect two power wirings using in the power line communication of above-mentioned polyphase electric power distribution, with first and second power line/wireless conversion bridger that utilizes two power wirings that use in the power line communication of above-mentioned Monophase electric power distribution,
Above-mentioned first power line/wireless conversion bridger is connected to two power wirings that use in the power line communication of above-mentioned polyphase electric power distribution, above-mentioned second power line/wireless conversion bridger is connected to two power wirings that use in the power line communication of above-mentioned Monophase electric power distribution
And then above-mentioned first power line/wireless conversion bridger has the signaling component that continuous transmission connects test signal,
The affirmation signal of afore mentioned rules is meant the connection test signal that above-mentioned first power line/wireless conversion bridger is sent.
7. the control system of putting down in writing according to claim 2 is characterized in that:
Above-mentioned first power line communication device is connected to the first polyphase electric power distribution that is connected on first distribution transformer, above-mentioned second power line communication device is connected to the second polyphase electric power distribution that is connected on second distribution transformer of the electric power system different with above-mentioned first distribution transformer, and has
Connect by radio communication use in the power line communication of the above-mentioned first polyphase electric power distribution two power wirings, with the power line communication of the above-mentioned second polyphase electric power distribution in first and second power line/wireless conversion bridger of two power wirings using,
Above-mentioned first power line/wireless conversion bridger is connected to two power wirings that use in the power line communication of the above-mentioned first polyphase electric power distribution, above-mentioned second power line/wireless conversion bridger is connected to two power wirings that use in the power line communication of the above-mentioned second polyphase electric power distribution
Above-mentioned second power line communication device has
Select with above-mentioned first power line communication device between second set parts of a certain pattern in the common pattern that communicates and the distribution preference pattern that the power wiring that will be connected is selected; With
Be configured under the situation of distribution preference pattern at above-mentioned second set parts, the above-mentioned communication component change condition of contact that self is had also is connected to the above-mentioned second polyphase electric power distribution in turn, the reception of second confirmation signal of the regulation that detects in the stipulated time one by one to be sent by this above-mentioned condition of contact that has connected, by the above-mentioned condition of contact reception number of times of second confirmation signal of this regulation that has detected of instrumentation one by one, determine this reception number of times of instrumentation be maximum condition of contact, and set the parts that are connected of above-mentioned communication component and above-mentioned power wiring with this fixed condition of contact
And then above-mentioned first and second power line/wireless conversion bridger sends test massage respectively continuously,
The affirmation signal of the detected regulation of communication component that above-mentioned first power line communication device has is meant the test signal that above-mentioned first power line/wireless conversion bridger is sent,
Second confirmation signal of the detected regulation of communication component that above-mentioned second power line communication device has is meant the test signal that above-mentioned second power line/wireless conversion bridger is sent.
8. the control system of putting down in writing according to claim 2 is characterized in that:
Above-mentioned first power line communication device is connected to the first polyphase electric power distribution that is connected on first distribution transformer, above-mentioned second power line communication device is connected to the second polyphase electric power distribution that is connected on second distribution transformer of the electric power system different with above-mentioned first distribution transformer, and has
With utilize two distributions using in the power line communication of the above-mentioned first polyphase electric power distribution, with the power line communication of utilizing the above-mentioned second polyphase electric power distribution in the capacitive coupling parts that are connected mutually of two distributions using; With
To above-mentioned first and above-mentioned second power line communication device send the signal generation apparatus that connects test signal respectively,
Above-mentioned second power line communication device has
Select with above-mentioned first power line communication device between second set parts of a certain pattern in the common pattern that communicates and the distribution preference pattern that the power wiring that will be connected is selected; With
Be configured under the situation of distribution preference pattern at above-mentioned second set parts, the above-mentioned communication component change condition of contact that self is had also is connected to the above-mentioned second polyphase electric power distribution in turn, the reception of second confirmation signal of the regulation that detects in the stipulated time one by one to be sent by this above-mentioned condition of contact that has connected, by the above-mentioned condition of contact reception number of times of second confirmation signal of this regulation that has detected of instrumentation one by one, determine this reception number of times of instrumentation be maximum condition of contact, and set the parts that are connected of above-mentioned communication component and above-mentioned power wiring with this fixed condition of contact
The affirmation signal of the detected regulation of communication component that above-mentioned first power line communication device has is meant the test signal that above-mentioned signal generation apparatus sends,
Second confirmation signal of the detected regulation of communication component that above-mentioned second power line communication device has is meant the test signal that above-mentioned signal generation apparatus sends.
9. the method set of the connection distribution in the power line communication device that overlapping high-frequency signal on two power wirings among the polyphase electric power distribution is communicated is characterized in that, carries out following steps:
Change the step of the condition of contact that above-mentioned two power wirings are determined in turn;
Use above-mentioned two power wirings to carry out the step of communication more than at least twice one by one by above-mentioned condition of contact;
Detect the reception from above-mentioned two power wirings and the step of this reception number of times that has detected of instrumentation one by one by above-mentioned condition of contact;
The reception number of times that detects above-mentioned instrumentation is the step of peaked condition of contact; And
Condition of contact is set so that detecting the step that overlapping high-frequency signal communicates on determined above-mentioned two power wirings of condition of contact by above-mentioned.
CN 200480017646 2003-06-24 2004-06-16 Power line communication device, control system, and method for setting a connection wire in power line communication device Pending CN1809975A (en)

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