CN111343065B - Communication electric appliance and air conditioner - Google Patents
Communication electric appliance and air conditioner Download PDFInfo
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- CN111343065B CN111343065B CN202010137793.7A CN202010137793A CN111343065B CN 111343065 B CN111343065 B CN 111343065B CN 202010137793 A CN202010137793 A CN 202010137793A CN 111343065 B CN111343065 B CN 111343065B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
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Abstract
The invention provides a communication electric appliance and an air conditioner, wherein the communication electric appliance comprises: a first communication circuit and a second communication circuit, the first communication circuit and the second communication circuit being connected by a bus, the first communication circuit including: a first group of switching devices outputting different voltage signals to the second communication circuit according to the conducting state of the first group of switching devices; a second communication circuit, the second communication circuit comprising: and the second group of switching devices operate according to the feedback signals corresponding to the voltage signals, so that the second communication circuit outputs current signals to the first communication circuit. In the technical scheme, the power supply and the communication can be realized by utilizing the connection mode of the existing bus without independently setting a power supply line, so that the manufacturing cost and the installation difficulty are convenient to reduce, and meanwhile, the cost is reduced, the limitation of the size is eliminated while the cost is reduced due to no need of installing an inductor, and the application to different products is facilitated.
Description
Technical Field
The invention relates to the technical field of circuit control, in particular to a communication electric appliance and an air conditioner.
Background
As shown in fig. 1, the multi-split air conditioner includes a centralized controller 108 ', outdoor units (1060' outdoor units 0, 1061 'outdoor units 1, 1062' outdoor units 2, 1063 'outdoor units 3), indoor units (1040' indoor units 0, 1041 'indoor units 1, 1042' indoor units 2 … … 104N 'indoor units N), a line controller 102', and the like, in the related technical solutions, communication modes include 485, CAN (controller area network), and Homebus, and those skilled in the art find that the following defects exist in the prior art solutions:
the mode that adopts 485 and CAN to communicate CAN't realize the area and carry, CAN't satisfy the demand that the load acquireed the power from communication bus, consequently, need set up two power supply lines alone and supply power, make the manufacturing cost and the installation work of many online become complicated.
Adopt the mode that the Homebus carries out communication, when acquireing the power supply through the bus, need use an inductance to restrain communication signal, and the cost of product increases is caused in the setting of inductance, and simultaneously, the volume of the product of the volume restriction of inductance can not the undersize, like equipment such as wire controller can't install.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the present invention is to provide a communication appliance.
In a second aspect of the present invention, an air conditioner is provided.
In view of the above, according to a first aspect of the present invention, there is provided a communication appliance including: a first communication circuit and a second communication circuit, the first communication circuit and the second communication circuit being connected by a bus, the first communication circuit including: a first group of switching devices outputting different voltage signals to the second communication circuit according to the conducting state of the first group of switching devices; a second communication circuit, the second communication circuit comprising: and the second group of switching devices operate according to the feedback signals corresponding to the voltage signals, so that the second communication circuit outputs current signals to the first communication circuit.
The invention provides a communication electric appliance, wherein the communication electric appliance comprises a first communication circuit and a second communication circuit, wherein the first communication circuit comprises a first group of switching devices, the first group of switching devices can output different voltage signals to the second communication circuit when the first group of switching devices are in a conducting state, the second communication circuit can receive the voltage signals to supply power for the second communication circuit or equipment connected with the second communication circuit, and meanwhile, the first communication circuit can communicate with the second communication circuit by using the voltage signals; in addition, the second group of switching devices of the second communication circuit can output current signals to the first communication circuit when operating according to feedback signals corresponding to the voltage signals, and can communicate to the first communication circuit by utilizing the current signals at the moment.
In addition, the communication electric appliance in the above technical solution provided by the present invention may further have the following additional technical features:
in the above technical solution, the first communication circuit further includes: a current detection circuit configured to detect the current signal to cause the first communication circuit to determine the feedback signal from the current signal.
In the technical scheme, the first communication circuit realizes the detection of the current signal by arranging the current detection circuit so as to determine the feedback signal according to the current signal, and further realizes the communication between the first communication circuit and the second communication circuit.
In any one of the above technical solutions, the first communication circuit further includes: a first controller, an output terminal of the first controller being connected to a control terminal of the first set of switching devices, the first controller being configured to receive the control signal and control a conducting state of the first set of switching devices according to the control signal, and an input terminal of the first controller being connected to an output terminal of the current detection circuit, the first controller being further configured to: a feedback signal is determined from the current signal.
In the technical scheme, the first communication circuit further comprises a first controller, wherein the first controller receives a control signal and controls the conduction state of the first group of switching devices according to the control signal, the control of the first communication circuit outputting different voltage signals is realized by using the conduction state of the first group of switching devices, meanwhile, the input end of the first controller is also connected with the output end of the current detection circuit, the current signal obtained by the current detection circuit can be obtained, and then the feedback signal is determined according to the current signal, the setting of the first controller realizes the determination of the control signal receiving, sending and feedback signal, and the communication control is conveniently carried out when the first communication circuit supplies power to the second communication circuit.
In any of the above solutions, the first set of switching devices includes: the first end of the first switching device is connected with the bus power supply, and the second end of the first switching device is connected to the first output end of the first communication circuit; a first end of the second switching device is grounded, and a second end of the second switching device is connected with a second end of the first switching device; the first communication circuit outputs a first voltage signal to the second communication circuit, the first switching device is in the cut-off state, the second switching device is in the conducting state, and the first communication circuit outputs a second voltage signal to the second communication circuit; the second communication circuit includes: the voltage dividing resistor is connected in series in a loop where the input end of the second communication circuit is located, and the second communication circuit is configured to determine the control signal according to the first voltage signal and/or the second voltage signal.
In the technical scheme, signals can be transmitted by adopting data consisting of 0 and 1, therefore, different voltage signals output by the conduction states of the first switching device and the second switching device are set to represent 0 and 1, the voltage signal output by the bus power supply and the voltage signal almost zero are transmitted as 1 and 0, the purpose that power is supplied to the second communication circuit and data can be issued to the second communication circuit is achieved, the voltage dividing resistor included in the second communication circuit is connected in series in a loop where the input end of the second communication circuit is located, namely the voltage dividing resistor can receive the voltage signal output by the first communication circuit, when the voltage signal is the voltage signal output by the bus power supply (namely the first voltage signal), the voltage dividing resistor can obtain a high-level signal, when the voltage signal is the voltage signal almost zero (namely the second voltage signal), the level signal obtained by the voltage dividing resistor is almost zero and can correspond to two bits of 0 and 1 in data transmission, so that the second communication circuit determines a control signal according to the first voltage signal and/or the second voltage signal to complete the process of acquiring the control signal by the second communication circuit, in the process, the first communication circuit realizes the power supply to the second communication circuit by outputting different voltage signals, meanwhile, the data of communication is extracted by matching with a divider resistor in the second communication circuit, the communication between the first communication circuit and the second communication circuit is realized, the power supply and the communication can be realized by utilizing the connection mode of the existing bus without independently arranging a power supply circuit, therefore, the manufacturing cost and the installation difficulty are convenient to reduce, and simultaneously, because no inductor is required to be installed, the cost is reduced, the limitation on the volume is eliminated, and the application to different products is facilitated.
In any one of the above technical solutions, the first communication circuit further includes: the output end of the power supply circuit is connected with the first output end of the first communication circuit, and the power supply circuit is configured to output a third voltage signal to the second communication circuit; the current detection circuit includes: the first resistor is connected between the output end of the power supply circuit and the second end of the first switching device in series; and the voltage detection circuit is used for detecting the voltage value at two ends of the first resistor so as to determine the current signal according to the voltage value and the resistance value of the first resistor.
In the technical scheme, a power supply circuit is arranged in a first communication circuit, a third voltage signal is output to a second communication circuit by using the first power supply circuit, so that a second group of switching devices in the second communication circuit and a circuit where the second group of switching devices are located form a loop under the action of the third voltage signal, further, the current signal is transmitted from the second communication circuit to the first communication circuit, meanwhile, the current signal is collected by adopting a mode of matching a first resistor and a voltage detection circuit, the collected voltage signal is conveniently transmitted to a first controller, a device for converting the current signal into a signal capable of being received by the first controller is not required to be additionally arranged, the arrangement of the part of circuits is reduced, the circuit is simplified, meanwhile, the power supply circuit is arranged in the first communication circuit, and the first communication circuit is convenient to determine when to start to receive the current signal transmitted by the second communication circuit, thereby enabling communication with each other.
In any of the above technical solutions, a control terminal of the first controller is connected to the power supply circuit, and the first controller is further configured to: and determining that the transmission of the control signal is finished, and controlling the power supply circuit to output a third voltage signal to the second communication circuit.
In the technical scheme, when the control signal transmission is determined to be finished, the control power supply circuit outputs a third voltage signal to the second communication circuit so as to acquire a feedback signal transmitted by the second communication circuit by collecting a current signal.
In any of the above technical solutions, the communication electrical appliance further includes: and the rectifier bridge is connected between the second end of the first switching device and the first output end of the first communication circuit or between the input end of the second communication circuit and the voltage dividing resistor in series, and is configured to rectify the voltage signal.
In the technical scheme, it can be understood that the rectifier bridge can be affiliated to the first communication circuit and also can be affiliated to the second communication circuit, and the rectifier bridge rectifies a voltage signal, so that when the second communication circuit is connected with the first communication circuit, the requirement of wiring polarity does not need to be considered, the installation difficulty is reduced, meanwhile, interference signals flowing to the second communication circuit are filtered, and the stability of power supply of the first communication circuit to the second communication circuit is improved.
In any of the above technical solutions, the voltage dividing resistor includes: the first end of the second resistor is connected with the first input end of the second communication circuit, the second end of the second resistor is connected with the first end of the third resistor, and the second end of the third resistor is connected with the second input end of the second communication circuit and then grounded; the second communication circuit further includes: and the input end of the second controller is connected with the second end of the second resistor, and the control signal is determined according to the level signal of the second end of the second resistor.
In the technical scheme, the voltage dividing resistor comprises a second resistor and a third resistor, wherein the second resistor and the third resistor are connected in series and then connected with a first input end and a second input end of a second communication circuit, the second input end of the second communication circuit is grounded, when the first communication circuit outputs a voltage signal to the second communication circuit, the second resistor and the third resistor are grounded, at the moment, a second end of the second resistor outputs a level signal, and at the moment, the level signal corresponds to a first voltage signal and a second voltage signal output by the first communication circuit, so that the second communication circuit can determine a control signal according to the level signal to further realize the acquisition of the control signal, the second communication circuit analyzes and obtains the control signal sent by the first communication circuit in the process, the circuit can supply power and can also communicate, the problem of over-high cost caused by independently arranging a power supply circuit and an inductor in the prior art is solved.
In any of the above solutions, the second set of switching devices includes: and the first end of the third switching device is connected with the first end of the second resistor, the second end of the third switching device is grounded, the output end of the second controller is connected with the control end of the third switching device, and the second controller is further configured to control the conducting state of the third switching device according to a feedback signal corresponding to the control signal so that the second communication circuit outputs a current signal to the first communication circuit.
In the technical scheme, the second group of switching devices only need to comprise one switching device to realize the control of the current signal, and the circuit has the advantages of simple structure, easy realization and convenient control cost.
In any of the above technical solutions, the second communication circuit further includes: the first end of the capacitor is grounded; and the anode of the first diode is connected with the first end of the second resistor, and the cathode of the first diode is connected with the second end of the capacitor.
In this technical scheme, the second communication circuit still includes the electric capacity, wherein, the electric capacity can be connected with the load, the setting of electric capacity makes the second communication circuit can realize supplying power to the load, and then have the load ability, at this moment, the bus is under the condition that provides communication effect to the second communication circuit, can also be to second communication circuit itself and with the effect of being connected the load power supply through the electric capacity, because the bus has the effect of power supply and communication, consequently, need not to set up the power supply line alone, be convenient for reduce product cost and installation degree of difficulty.
And the first diode has the characteristic of unidirectional conduction, and when the first communication circuit outputs a second voltage signal to the second communication circuit and the second communication circuit replies a current signal to the first communication circuit, the influence of the capacitor and a load connected with the capacitor on the second voltage signal and the current signal can be blocked, so that the stable transmission of data is ensured.
In any of the above technical solutions, the second communication circuit further includes a fourth resistor, the fourth resistor is connected in series between the output terminal of the second controller and the control terminal of the third switching device, and the fourth resistor is configured to limit a current flowing through the third switching device.
In the technical scheme, the fourth resistor is arranged, and the current flowing through the third switching device is limited by the fourth resistor, so that the risk of damage of the third switching device due to overcurrent is reduced, and the operation reliability of the communication electric appliance is improved.
In any of the above technical solutions, the second communication circuit further includes: and a first end of the fifth resistor is connected with the control end of the third switching device, and a second end of the fifth resistor is grounded.
In this technical solution, since the second terminal of the fifth resistor is grounded, and the fifth resistor and the fourth resistor form a series relationship, when a level signal is output from the output terminal of the second controller, a voltage signal may be formed at the control terminal of the third switching device, and due to the existence of the fifth resistor, the voltage signal may be stably output to the control terminal of the third switching device, so as to ensure the reliability of turning on or off the third switching device.
In any of the above technical solutions, the method further includes: and the second diode is connected between the first resistor and the second end of the first switching device in series, the anode of the second diode is connected with the first resistor, and the cathode of the second diode is connected with the second end of the first switching device.
In this technical scheme, through setting up the second diode, utilize the second diode to have one-way conducting's characteristic, when avoiding first communication circuit to supply power or export first voltage signal to second communication circuit to the second communication circuit, act on the current detection circuit via first resistance, and then is affirmed as feedback signal, causes the communication confusion, and the appearance of above-mentioned condition has effectively been avoided in setting up of second diode.
In any of the above technical solutions, the method further includes: and the transient diode is connected between the first output end of the first communication circuit and the second output end of the first communication circuit in series.
In the technical scheme, the transient diode is arranged, so that the first output end of the first communication circuit and the second output end of the first communication circuit can be ensured to have stable output voltage, stable power supply and communication can be ensured to be provided for the second communication circuit, and the operation reliability of the communication electric appliance is further improved.
In a second aspect of the invention, an air conditioner is provided, comprising a communication appliance as in any one of the above.
In this technical solution, the present invention provides an air conditioner including any one of the above communication appliances, so that the air conditioner has all the beneficial technical effects of any one of the above communication appliances, and details are not repeated herein.
In the technical scheme, the first communication circuit is arranged in an outdoor unit of the air conditioner, and the second communication circuit is arranged in an indoor unit of the air conditioner; or the first communication circuit is arranged in the indoor unit of the air conditioner, and the second communication circuit is arranged in the wire controller of the air conditioner; or the first communication circuit is arranged in an outdoor unit of the air conditioner, and the second communication circuit is arranged in a centralized controller of the air conditioner.
In the technical scheme, a first communication circuit is arranged in an outdoor unit of an air conditioner, and a second communication circuit is arranged in an indoor unit of the air conditioner; or the first communication circuit is arranged in the indoor unit of the air conditioner, and the second communication circuit is arranged in the wire controller of the air conditioner; or the first communication circuit is arranged in an outdoor unit of the air conditioner, and the second communication circuit is arranged in a centralized controller of the air conditioner, so that the use requirements of the air conditioner in different scenes are met. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a diagram illustrating a communication system architecture of a multi-split system in a related art;
FIG. 2 shows a schematic diagram of a first communication circuit according to one embodiment of the invention;
fig. 3 shows a schematic diagram of a second communication circuit according to an embodiment of the invention.
Wherein, the corresponding relationship between the reference numbers and the component names in fig. 1 is:
a line controller 102 ', a line controller 1040 ', an indoor unit 0, an indoor unit 1041 ', an indoor unit … … 104N ', an indoor unit N, 1060 ', an outdoor unit 0, an outdoor unit 1061 ', an outdoor unit 2 ', an outdoor unit 1063 ', and a centralized controller 108 '.
Wherein, the correspondence between the reference numbers and the part names in fig. 2 and 3 is:
100 a first communication circuit, 102 a second communication circuit, 104 a first controller, Q1 a first switching device, Q2 a second switching device, 106 a power supply circuit, R1 a first resistor, 108 a voltage detection circuit, 110 a rectifier bridge, R2 a second resistor, R3 a third resistor, 112 a second controller, Q3 a third switching device, a C capacitor, a D1 first diode, R4 a fourth resistor, R5 a fifth resistor, a D2 second diode, a TVS1 a first transient diode, a TVS2 a second transient diode, R6 a sixth resistor, R7 a seventh resistor, R8 an eighth resistor, R9 a ninth resistor, 114 a regulator control circuit, 116 a MOS driver circuit, an IC1 a first communication interface chip, M1 a first micro-control unit, an IC2 a second communication interface chip, and M39 2 a second micro-control unit.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example one
In one embodiment of the present invention, as shown in fig. 2 and 3, there is provided a communication appliance including: a first communication circuit 100 and a second communication circuit 102, the first communication circuit 100 and the second communication circuit 102 being connected by a bus, the first communication circuit 100 comprising: a first group of switching devices that output different voltage signals to the second communication circuit 102 according to their on-states; a second communication circuit 102, the second communication circuit 102 comprising: a second set of switching devices that operate according to a feedback signal corresponding to the voltage signal to cause the second communication circuit 102 to output a current signal to the first communication circuit 100.
The invention provides a communication electric appliance, wherein the communication electric appliance comprises a first communication circuit 100 and a second communication circuit 102, wherein the first communication circuit 100 comprises a first group of switching devices, the first group of switching devices can output different voltage signals to the second communication circuit 102 when the first group of switching devices are in a conducting state, the second communication circuit 102 can receive the voltage signals to supply power for the first communication circuit or equipment connected with the first communication circuit, and meanwhile, the first communication circuit 100 can communicate with the second communication circuit 102 by using the voltage signals; in addition, the second group of switching devices of the second communication circuit 102 outputs current signals to the first communication circuit 100 when operating according to the feedback signals corresponding to the voltage signals, and at the moment, the current signals can be used for communication with the first communication circuit 100.
In one embodiment, the first communication circuit 100 further comprises: a current detection circuit (not shown in the figure) configured to detect the current signal to cause the first communication circuit 100 to determine the feedback signal from the current signal.
In this embodiment, the first communication circuit 100 implements detection of the current signal by providing a current detection circuit to determine a feedback signal from the current signal to implement communication between the first communication circuit 100 and the second communication circuit 102.
In an embodiment thereof, the first communication circuit 100 further comprises: a first controller 104, an output of the first controller 104 is connected to a control terminal of the first set of switching devices, the first controller 104 is configured to receive a control signal and control a conducting state of the first set of switching devices according to the control signal, and an input of the first controller 104 is connected to an output of the current detection circuit, the first controller 104 is further configured to: a feedback signal is determined from the current signal.
In this embodiment, the first communication circuit 100 further includes a first controller 104, where the first controller 104 receives a control signal, and controls the on state of the first group of switching devices according to the control signal, and the on state of the first group of switching devices is used to realize control of the first communication circuit 100 to output different voltage signals, and meanwhile, an input end of the first controller 104 is further connected to an output end of the current detection circuit, so as to obtain a current signal obtained by the current detection circuit, and further determine a feedback signal according to the current signal, and the setting of the first controller 104 realizes the receiving, sending, and determining of the feedback signal of the control signal, so that the first communication circuit 100 performs communication control while supplying power to the second communication circuit 102.
In one embodiment, the first controller 104 includes a first communication interface chip IC1 and a first micro control unit (MCU1, microcontrol unit, herein referred to as M1 for ease of reference), the first micro control unit M1 being connected to various components herein through the first communication interface chip IC 1.
Example two
In any of the above embodiments, as shown in fig. 2 and 3, the first set of switching devices comprises: a first switching device Q1, a first terminal of the first switching device Q1 being connected to the bus supply, a second terminal of the first switching device Q1 being connected to a first output terminal of the first communication circuit 100; a second switching device Q2, a first terminal of the second switching device Q2 being connected to ground, a second terminal of the second switching device Q2 being connected to a second terminal of the first switching device Q1; wherein the first switching device Q1 is in a conducting state and the second switching device Q2 is in an off state, the first communication circuit 100 outputs a first voltage signal to the second communication circuit 102, the first switching device Q1 is in an off state and the second switching device Q2 is in a conducting state, the first communication circuit 100 outputs a second voltage signal to the second communication circuit 102; the second communication circuit 102 includes: the voltage dividing resistor is connected in series in a loop in which the input end of the second communication circuit 102 is located, and the second communication circuit 102 is configured to determine the control signal according to the first voltage signal and/or the second voltage signal.
In this embodiment, the signal may be transmitted by using data composed of 0 and 1, therefore, by setting different voltage signals output by the on states of the first switching device Q1 and the second switching device Q2 to represent 0 and 1, and transmitting the voltage signal output by the bus power supply and the voltage signal of almost zero as 1 and 0, it is achieved that the data can be issued to the second communication circuit 102 while the power is supplied to the second communication circuit 102, and the second communication circuit 102 includes a voltage dividing resistor connected in series in a loop where the input end of the second communication circuit 102 is located, that is, the voltage dividing resistor can receive the voltage signal output by the first communication circuit 100, when the voltage signal is the voltage signal output by the bus power supply (i.e., the first voltage signal), the voltage dividing resistor can obtain a high level signal, when the voltage signal is the voltage signal of almost zero (i.e., the second voltage signal), the divider resistance can obtain a level signal which is almost zero and can correspond to 0 bit and 1 bit in data transmission, so that the second communication circuit 102 determines a control signal according to a first voltage signal and/or a second voltage signal to complete the process of acquiring the control signal by the second communication circuit 102, in the process, the first communication circuit 100 realizes power supply to the second communication circuit 102 by outputting different voltage signals, and simultaneously extracts communication data by matching with the divider resistance in the second communication circuit 102, and also realizes communication between the first communication circuit 100 and the second communication circuit 102, and power supply and communication can be realized by utilizing the existing bus connection mode without independently setting a power supply line, so that the manufacturing cost and the installation difficulty are conveniently reduced, and simultaneously, because no inductance is required to be installed, the volume limitation is eliminated while the cost is reduced, is beneficial to being applied to different products.
In one embodiment, the bus power supply is attached to the communication appliance.
In one embodiment, the first switching device Q1 is a field effect transistor, wherein the first controller 104 drives the first switching device Q1 through a MOS transistor driving circuit 116, wherein MOS transistor is abbreviated as MOSFET. A MOSFET Metal-Oxide-semiconductor field effect transistor (MOSFET) is referred to as a Metal-Oxide-semiconductor field-effect-transistor (MOSFET).
In one embodiment, the second switching device Q2 is a triode, wherein the second terminal of the second switching device Q2 is connected to the second terminal of the first switching device Q1 through a seventh resistor R7, so as to pull down the level signal of the second terminal of the first switching device Q1 when the second switching device Q2 is in a conducting state, thereby ensuring that a voltage signal of almost zero is output to the second communication circuit 102.
In an embodiment thereof, the first communication circuit 100 further comprises: an eighth resistor R8, wherein the eighth resistor R8 is connected in series between the control terminal of the second switching device Q2 and the first controller 104, and is used for limiting a current value flowing through the second switching device Q2 when the second switching device Q2 is turned on, so as to prevent the second switching device Q2 from being damaged due to an overcurrent, and the first communication circuit 100 further includes: and a ninth resistor R9, wherein a first terminal of the ninth resistor R9 is connected to the control terminal of the second switching device Q2, and a second terminal of the ninth resistor R9 is grounded, so as to provide a stable level signal to the control terminal of the second switching device Q2, thereby ensuring stable operation thereof. In an embodiment thereof, the first communication circuit 100 further comprises: a power supply circuit 106, an output terminal of the power supply circuit 106 being connected to a first output terminal of the first communication circuit 100, the power supply circuit 106 being configured to output a third voltage signal to the second communication circuit 102; the current detection circuit includes: a first resistor R1, the first resistor R1 being connected in series between the output terminal of the power supply circuit 106 and the second terminal of the first switching device Q1; and the voltage detection circuit 108, wherein the voltage detection circuit 108 is used for detecting the voltage value at the two ends of the first resistor R1 so as to determine the current signal according to the voltage value and the resistance value of the first resistor R1.
In this embodiment, by providing the power supply circuit 106 in the first communication circuit 100, outputting a third voltage signal to the second communication circuit 102 by using the first power supply circuit 106, so that a second group of switching devices in the second communication circuit 102 forms a loop with a circuit where the second group of switching devices is located under the action of the third voltage signal, thereby realizing the transmission of a current signal from the second communication circuit 102 to the first communication circuit 100, and simultaneously, by using the first resistor R1 and the voltage detection circuit 108 in a matching manner to realize the collection of the current signal, so as to facilitate the transmission of the collected voltage signal to the first controller 104, there is no need to additionally provide a device for converting the current signal into a signal that can be received by the first controller 104, the arrangement of the part of the circuit is reduced, thereby facilitating the simplification of the circuit, and at the same time, the power supply circuit 106 is provided in the first communication circuit 100, it is convenient to determine at the first communication circuit 100 when to start receiving the current signal transmitted by the second communication circuit 102 to thereby enable communication with each other.
In one embodiment, the control terminal of the first controller 104 is connected to the power supply circuit 106, and the first controller 104 is further configured to: determining that the transmission of the control signal is finished, the control power supply circuit 106 outputs a third voltage signal to the second communication circuit 102.
In this embodiment, when it is determined that the transmission of the control signal is finished, the control power supply circuit 106 outputs the third voltage signal to the second communication circuit 102, so as to obtain the feedback signal transmitted by the second communication circuit 102 by collecting the current signal, and in this process, the first communication circuit 100 distinguishes between issuing the control signal to the second communication circuit 102 and receiving the feedback signal fed back by the second communication circuit 102, thereby reducing the situation that the control signal and the feedback signal are transmitted simultaneously, and ensuring the reliability of data transmission.
In an embodiment of the present invention, the power supply circuit 106 is an adjustable voltage regulator, and the power supply circuit 106 is connected to the control end of the first controller 104 through a voltage regulator control circuit 114, wherein the voltage regulator control circuit 114 drives the power supply circuit 106 to output a third voltage signal under the control of the first controller 104.
EXAMPLE III
In one embodiment, as shown in fig. 2 and 3, the communication appliance further includes: a rectifier bridge 110, the rectifier bridge 110 being connected in series between the second terminal of the first switching device Q1 and the first output terminal of the first communication circuit 100 or between the input terminal of the second communication circuit 102 and the voltage dividing resistor, the rectifier bridge 110 being configured to rectify the voltage signal.
In this embodiment, it can be understood that the rectifier bridge 110 may be affiliated to the first communication circuit 100 or affiliated to the second communication circuit 102, and the rectifier bridge 110 rectifies the voltage signal, so that when the second communication circuit 102 is connected to the first communication circuit 100, the requirement of the connection polarity is not needed to be considered, the installation difficulty is reduced, meanwhile, the interference signal flowing to the second communication circuit 102 is filtered, and the stability of the first communication circuit 100 supplying power to the second communication circuit 102 is improved.
In one embodiment, the voltage dividing resistor includes: a second resistor R2 and a third resistor R3, wherein a first end of the second resistor R2 is connected to a first input end of the second communication circuit 102, a second end of the second resistor R2 is connected to a first end of the third resistor R3, and a second end of the third resistor R3 is connected to a second input end of the second communication circuit 102 and then grounded; the second communication circuit 102 further includes: and a second controller 112, an input terminal of the second controller 112 being connected to the second terminal of the second resistor R2, the control signal being determined according to a level signal of the second terminal of the second resistor R2.
In this embodiment, the voltage dividing resistor includes a second resistor R2 and a third resistor R3, wherein the second resistor R2 and the third resistor R3 are connected in series and then connected to the first input terminal and the second input terminal of the second communication circuit 102, the second input terminal of the second communication circuit 102 is grounded, when the first communication circuit 100 outputs a voltage signal to the second communication circuit 102, the voltage signal is grounded through the second resistor R2 and the third resistor R3, at this time, the second terminal of the second resistor R2 outputs a level signal, and at this time, the level signal corresponds to the first voltage signal and the second voltage signal output by the first communication circuit 100, so that the second communication circuit 102 can determine a control signal according to the level signal to further achieve the acquisition of the control signal, in this process, the second communication circuit 102 resolves and obtains the control signal sent by the first communication circuit 100, and power supply is achieved, the communication can be carried out, and the problem of overhigh cost caused by independently arranging a power supply line and an inductor in the prior embodiment is solved.
In one embodiment, the second controller 112 includes a second communication interface chip IC2 and a second micro control unit (MCU2, microcontrol unit, herein referred to as M2 for convenience of reference), and the second micro control unit M2 is connected to each component therein through a second communication interface chip IC 2.
In one embodiment thereof, the second set of switching devices comprises: a third switching device Q3, a first terminal of the third switching device Q3 is connected to the first terminal of the second resistor R2, a second terminal of the third switching device Q3 is grounded, an output terminal of the second controller 112 is connected to a control terminal of the third switching device Q3, and the second controller 112 is further configured to control an on state of the third switching device Q3 according to a feedback signal corresponding to the control signal, so that the second communication circuit 102 outputs the current signal to the first communication circuit 100.
In this embodiment, the second group of switching devices only needs to include one switching device to realize the control of the current signal, and the circuit structure is simple, easy to realize, and convenient for control cost.
In one embodiment thereof, the second communication circuit 102 further comprises: a capacitor C, wherein the first end of the capacitor C is grounded; a first diode D1, an anode of the first diode D1 is connected to the first terminal of the second resistor R2, and a cathode of the first diode D1 is connected to the second terminal of the capacitor C.
In this embodiment, the second communication circuit 102 further includes a capacitor C, where the capacitor C may be connected to a load, and the second communication circuit 102 may be powered by the capacitor C, and further has a load carrying capability, and at this time, the bus may also be powered by the second communication circuit 102 itself and the load through the capacitor C when the bus has a communication function of providing communication to the second communication circuit 102.
The first diode D1 has a characteristic of unidirectional conduction, and when the first communication circuit 100 outputs the second voltage signal to the second communication circuit 102 and the second communication circuit 102 returns the current signal to the first communication circuit 100, the influence of the load connected to the capacitor C and the capacitor C on the second voltage signal and the current signal can be blocked, thereby ensuring stable data transmission.
In one embodiment, the second communication circuit 102 further includes a fourth resistor R4, the fourth resistor R4 is connected in series between the output terminal of the second controller 112 and the control terminal of the third switching device Q3, and the fourth resistor R4 is configured to limit the current flowing through the third switching device Q3.
In this embodiment, by providing the fourth resistor R4 and limiting the current flowing through the third switching device Q3 by the fourth resistor R4, the risk of damage to the third switching device Q3 due to overcurrent is reduced, and the reliability of the operation of the communication electrical appliance is improved.
In one embodiment thereof, the second communication circuit 102 further comprises: a first end of the fifth resistor R5, a first end of the fifth resistor R5 is connected to the control end of the third switching device Q3, and a second end of the fifth resistor R5 is grounded.
In this embodiment, since the second terminal of the fifth resistor R5 is grounded and the fifth resistor R5 and the fourth resistor R4 form a series relationship, a voltage signal can be formed at the control terminal of the third switching device Q3 when a level signal is output from the output terminal of the second controller 112, and the voltage signal can be stably output to the control terminal of the third switching device Q3 due to the presence of the fifth resistor R5, thereby ensuring the reliability of turning on or off the third switching device Q3.
In an embodiment of the invention, the second communication circuit 102 further includes a sixth resistor, wherein the second terminal of the fifth resistor R5 and the second terminal of the third switching device Q3 are grounded via the sixth resistor, and by providing the sixth resistor, it is convenient to raise the level of the first terminal of the fifth resistor R5, and ensure that the third switching device Q3 is triggered more reliably, and by detecting the current value of the sixth resistor or the voltage values at both ends, it is possible to determine whether the second communication circuit 102 sends a current signal, thereby facilitating fault diagnosis.
In one embodiment, the method further comprises: a second diode D2, a second diode D2 is connected in series between the first resistor R1 and the second terminal of the first switching device Q1, the anode of the second diode D2 is connected to the first resistor R1, and the cathode of the second diode D2 is connected to the second terminal of the first switching device Q1.
In this embodiment, by providing the second diode D2, the characteristic that the second diode D2 has a unidirectional conduction is utilized to prevent the first communication circuit 100 from supplying power to the second communication circuit 102 or outputting the first voltage signal to the second communication circuit 102, acting on the current detection circuit via the first resistor R1, and further being identified as a feedback signal to cause communication disorder, and the provision of the second diode D2 effectively avoids the above situation.
In one embodiment, the method further comprises: a transient diode connected in series between the first output terminal of the first communication circuit 100 and the second output terminal of the first communication circuit 100.
In this embodiment, by providing the transient diode, it is ensured that the first output terminal of the first communication circuit 100 and the second output terminal of the first communication circuit 100 have stable output voltages, and stable power supply and communication are ensured to be provided to the second communication circuit 102, thereby improving the reliability of the operation of the communication electrical appliance.
In one embodiment, the transient diode includes a first transient diode TVS1 and a second transient diode TVS2, wherein the first transient diode TVS1 is connected in series between the first output terminal of the first communication circuit 100 and the second output terminal of the first communication circuit 100, and the second transient diode TVS2 is connected in series between the first input terminal of the second communication circuit 102 and the second input terminal of the second communication circuit 102, so as to ensure that the voltage signal inputted to the second communication circuit 102 is stable, thereby improving the reliability of the operation of the communication appliance.
Example four
In an embodiment of the present invention, a new communication method is provided, in which power supply and communication are performed in a time-sharing manner, power supply is performed for a period of time, communication is performed for a period of time, a signal sent by a host computer adopts a voltage signal, and a signal returned by a slave computer adopts a current signal, specifically, as shown in fig. 2 and 3, a first communication circuit is the host computer, a second communication circuit is the slave computer, whether a bus power supply supplies power to a bus is controlled by a first switching device Q1 (which may be a MOS transistor), the first switching device Q1 is turned on to supply power to the bus, and on the slave computer side, after being rectified by a rectifier bridge, the first diode D1 is passed through a capacitor CI to smooth, and then the power is supplied to a subsequent load, and the power supply to the bus is turned off and stopped. When the host sends data, the voltage signal is sent, when data 1 is sent, the first switching device Q1 is conducted, the voltage signal is sent to be the voltage signal output by the bus power supply, a relatively high level is obtained through rectification of the slave rectifier bridge and voltage division of the second resistor R2 and the third resistor R3 and is identified as 1, when the host sends data 0, the first switching device Q1 is turned off, the second switching device Q2 (which can be a triode) is conducted, a level which is almost 0 is sent to the bus, a level which is almost 0 is obtained through rectification of the rectifier bridge and voltage division of the second resistor R2 and the third resistor R3 and is identified as 0, when the slave sends data back, the current signal is sent, the host turns off the first switching device Q1 and the second switching device Q2, a fixed level is sent to the bus through an adjustable voltage stabilizer (namely a power supply circuit in the text), and the level is between the voltage signal output by the bus power supply and 0V, the fixed level is divided by the rectifier bridge, the second resistor R2 and the third resistor R3 to obtain a corresponding level, the slave computer starts to recover data after recognizing the level, the slave computer recovers the data by controlling the on and off of the third switching device Q3 to realize the data return of 0 and 1, the third switching device Q3 is turned on, a current flows through the sixth resistor R6, the current also passes through the first resistor R1 of the host computer to generate a voltage drop on the first resistor R1, the state is recognized as a state (data 0 or 1), when the third switching device Q3 is not turned on, the first resistor R1 hardly has the current or the voltage drop, the state is recognized as another state (data 1 or 0), and the abnormal current can be judged naturally, and corresponding bus protection is carried out. The second diode D2 of the host is used to block the bus voltage when the bus supplies power and transmits data 1, when the host supplies power and transmits data 0 and 1, the communication interface chip IC1 will turn off the output of the adjustable voltage regulator (i.e. the power supply circuit herein) through the regulator control circuit 114, and when the bus current is abnormal, also turn off the output of the adjustable voltage regulator (i.e. the power supply circuit herein). The slave rectifier bridge is mainly used for realizing non-polar wiring and power supply. The fourth resistor R4 and the fifth resistor R5 are used to limit current and ensure reliable cut-off and turn-off of the third switching device Q3. The first diode D1 is important to block the effect of the load side voltage when the master sends data 0 and the slave sends data.
The capacitor C is selected to ensure that the voltage of the slave is always higher than the voltage output by the adjustable voltage regulator (i.e., the power supply circuit in this document) by a certain magnitude when data is returned, and the first diode D1 is kept in the off state.
Specifically, taking the rate of 9600 as an example, one bit 104us, assuming 10 bits for one byte, one byte is 1.04ms in time, the 1.04ms is taken as a period, when the host sends data, the data is sent at any time, when the host sends 1, the first switching device Q1 is switched on and supplies power, when the host sends 0, the first switching device Q1 is switched off, the second switching device Q2 is switched on, in order to ensure that the power supply time does not last 104us, a short-time low-level pulse is given, the time is automatically calculated in the communication interface, when the host sends the data, the 1.04ms period is started to be timed, the first 700us is used for supplying power, the later 300us host adjustable voltage stabilizer (namely a power supply circuit in the text) outputs a specific level to the slave, the slave cuts off the data at the time, and the communication and the power supply are separately carried out, the specific level, namely the value range of the level, is between almost zero and the voltage signal output by the bus power supply.
Different from 485 and CAN, 485 and CAN directly compare the high and low levels corresponding to the differential signal output, the communication mode directly detects the voltage signal, CAN identify the amplitude and the rising and falling edges of the voltage, carries out corresponding waveform calibration according to data and algorithm, and CAN adapt to various severe communication environments.
The practical application in the multi-split air conditioner communication system is that the outer machine is a host machine and the inner machine is a slave machine, the inner machine is powered down and can close and open an electronic expansion valve of the inner machine through a power supply supplied by the outer machine through a communication bus, the long-term reliable operation of the system is ensured, if the inner machine is in communication with the wire controller, the inner machine is taken as a master, the wire controller is taken as a slave, the power supply of the whole wire controller can be directly taken from the inner machine, and thus the wire controller only needs to be connected with two wires. The whole system can be two-core non-polar, the actual installation does not need to connect wrong lines, the topology can be random, the connection must be carried out by hands in the past, and the system can be in star type, bus type, tree type and the like at present as long as the system is connected to a corresponding bus, so that the requirement of the communication wiring of the multi-split system is greatly simplified.
In the embodiment, the communication and the power supply are carried out in a time-sharing manner, an inductor is not needed, the cost is reduced, and the device is suitable for various small-volume application occasions; the method has the advantages of directly detecting voltage signals, facilitating the participation of software algorithms in waveform calibration, being suitable for various severe communication environments, such as strong electromagnetic interference, various connection topologies and the like, having wider application occasions and more reliable communication, and being very suitable for a multi-split communication system.
EXAMPLE five
In one embodiment of the invention, an air conditioner is provided, which comprises the communication appliance.
In this embodiment, the present invention provides an air conditioner including any one of the above communication apparatuses, so that the air conditioner has all the beneficial technical effects of any one of the above communication apparatuses, and details are not repeated herein.
In the above embodiment, the first communication circuit is disposed in an outdoor unit of the air conditioner, and the second communication circuit is disposed in an indoor unit of the air conditioner; or the first communication circuit is arranged in the indoor unit of the air conditioner, and the second communication circuit is arranged in the wire controller of the air conditioner; or the first communication circuit is arranged in an outdoor unit of the air conditioner, and the second communication circuit is arranged in a centralized controller of the air conditioner.
In the embodiment, the first communication circuit is arranged in an outdoor unit of the air conditioner, and the second communication circuit is arranged in an indoor unit of the air conditioner; or the first communication circuit is arranged in the indoor unit of the air conditioner, and the second communication circuit is arranged in the wire controller of the air conditioner; or the first communication circuit is arranged in an outdoor unit of the air conditioner, and the second communication circuit is arranged in a centralized controller of the air conditioner, so that the use requirements of the air conditioner in different scenes are met.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A communications appliance, comprising:
a first communication circuit and a second communication circuit, which are connected by a bus,
the first communication circuit includes:
a first group of switching devices outputting different voltage signals to the second communication circuit according to the conducting state thereof;
the second communication circuit, the second communication circuit comprising:
a second set of switching devices operating according to a feedback signal corresponding to the voltage signal to cause the second communication circuit to output a current signal to the first communication circuit;
the first set of switching devices includes:
a first switching device, a first end of the first switching device is connected with a bus power supply, and a second end of the first switching device is connected to a first output end of the first communication circuit;
a second switching device, a first terminal of the second switching device being grounded, a second terminal of the second switching device being connected to a second terminal of the first switching device;
wherein the first switching device is in an on state and the second switching device is in an off state, the first communication circuit outputs a first voltage signal to the second communication circuit, the first switching device is in an off state and the second switching device is in an on state, the first communication circuit outputs a second voltage signal to the second communication circuit;
the second communication circuit includes:
the voltage dividing resistor is connected in series in a loop where the input end of the second communication circuit is located, and the second communication circuit is configured to determine a control signal according to the first voltage signal and/or the second voltage signal.
2. The communications appliance of claim 1, wherein the first communications circuit further comprises:
a current detection circuit configured to detect the current signal to cause the first communication circuit to determine the feedback signal from the current signal.
3. The communications appliance of claim 2, wherein the first communications circuit further comprises:
a first controller having an output connected to the control terminals of the first set of switching devices, the first controller configured to receive the control signal and control the on-state of the first set of switching devices according to the control signal, an
An input of the first controller is connected with an output of the current detection circuit, the first controller further configured to: determining the feedback signal from the current signal.
4. The communications appliance of claim 1, wherein the first communications circuit further comprises:
a power supply circuit, an output of the power supply circuit connected to the first output of the first communication circuit, the power supply circuit configured to output a third voltage signal to the second communication circuit;
the current detection circuit includes:
a first resistor connected in series between an output terminal of the power supply circuit and a second terminal of the first switching device;
the voltage detection circuit is used for detecting the voltage value at two ends of the first resistor so as to determine the current signal according to the voltage value and the resistance value of the first resistor.
5. The communication appliance of claim 4, wherein the control terminal of the first controller is connected to the power supply circuit, the first controller further configured to:
and determining that the transmission of the control signal is finished, and controlling the power supply circuit to output the third voltage signal to the second communication circuit.
6. The communication appliance according to any of the claims 1 to 5, characterized in that it further comprises:
a rectifier bridge connected in series between the second terminal of the first switching device and the first output terminal of the first communication circuit or between the input terminal of the second communication circuit and the voltage dividing resistor, the rectifier bridge configured to rectify the voltage signal.
7. The communication appliance according to claim 6, wherein the voltage dividing resistor comprises:
the first end of the second resistor is connected with the first input end of the second communication circuit, the second end of the second resistor is connected with the first end of the third resistor, and the second end of the third resistor is connected with the second input end of the second communication circuit and then grounded;
the second communication circuit further comprises: and the input end of the second controller is connected with the second end of the second resistor, and the control signal is determined according to the level signal of the second end of the second resistor.
8. The communications appliance of claim 7, wherein the second set of switching devices comprises:
a third switching device, a first end of the third switching device being connected to the first end of the second resistor, a second end of the third switching device being grounded, an output end of the second controller being connected to a control end of the third switching device, the second controller being further configured to control a conducting state of the third switching device according to a feedback signal corresponding to the control signal, so that the second communication circuit outputs the current signal to the first communication circuit.
9. The communication appliance according to claim 7 or 8, characterized in that the second communication circuit further comprises:
a capacitor, a first end of the capacitor being grounded;
and the anode of the first diode is connected with the first end of the second resistor, and the cathode of the first diode is connected with the second end of the capacitor.
10. The communications appliance of claim 8, wherein the second communications circuit further comprises:
a fourth resistor connected in series between the output terminal of the second controller and the control terminal of the third switching device, the fourth resistor configured to limit current flowing through the third switching device.
11. The communications appliance of claim 10, wherein the second communications circuit further comprises:
and a first end of the fifth resistor is connected with the control end of the third switching device, and a second end of the fifth resistor is grounded.
12. The communication appliance according to claim 4 or 5, further comprising:
and the second diode is connected between the first resistor and the second end of the first switching device in series, the anode of the second diode is connected with the first resistor, and the cathode of the second diode is connected with the second end of the first switching device.
13. The communication appliance according to any of the claims 1 to 5, further comprising:
a transient diode connected in series between the first output of the first communication circuit and the second output of the first communication circuit.
14. An air conditioner, comprising:
the communication appliance of any one of claims 1 to 13.
15. The air conditioner according to claim 14,
the first communication circuit is arranged in an outdoor unit of the air conditioner, and the second communication circuit is arranged in an indoor unit of the air conditioner; or
The first communication circuit is arranged in an indoor unit of the air conditioner, and the second communication circuit is arranged in a wire controller of the air conditioner; or
The first communication circuit is arranged in an outdoor unit of the air conditioner, and the second communication circuit is arranged in a centralized controller of the air conditioner.
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| CN112303805B (en) * | 2020-10-19 | 2023-11-28 | 青岛海信日立空调系统有限公司 | Communication circuit and air conditioner |
| CN112556105B (en) * | 2020-12-09 | 2022-05-31 | 广东美的暖通设备有限公司 | Control method, control device, communication system and storage medium for communication equipment |
| CN112415940B (en) * | 2021-01-25 | 2021-04-27 | 杭州并坚科技有限公司 | Bus master controller, bus communication power supply system and communication power supply method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375887A (en) * | 2012-04-18 | 2013-10-30 | 珠海格力电器股份有限公司 | Air conditioner, and control circuit and control method thereof |
| CN106647919A (en) * | 2017-01-17 | 2017-05-10 | 深圳市泛海三江电子股份有限公司 | Host device of two-bus communication circuit and two-bus communication circuit |
| CN109743051A (en) * | 2019-03-22 | 2019-05-10 | 广东美的制冷设备有限公司 | Drive control circuit and household appliance |
| CN109764503A (en) * | 2019-01-15 | 2019-05-17 | 海信（广东）空调有限公司 | Power-supplying circuit and air conditioner outside a kind of air conditioning chamber |
| CN110285552A (en) * | 2019-07-01 | 2019-09-27 | 珠海格力电器股份有限公司 | Line control machine power-supplying circuit, air-conditioning internal machine and air-conditioning system |
| CN110762808A (en) * | 2019-10-31 | 2020-02-07 | 广东美的制冷设备有限公司 | Drive control circuit and air conditioner |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009079811A (en) * | 2007-09-26 | 2009-04-16 | Sanyo Electric Co Ltd | Air conditioning system and indoor unit |
| JP4582250B2 (en) * | 2008-09-22 | 2010-11-17 | ダイキン工業株式会社 | Communication module, communication system, and air conditioner |
-
2020
- 2020-03-03 CN CN202010137793.7A patent/CN111343065B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375887A (en) * | 2012-04-18 | 2013-10-30 | 珠海格力电器股份有限公司 | Air conditioner, and control circuit and control method thereof |
| CN106647919A (en) * | 2017-01-17 | 2017-05-10 | 深圳市泛海三江电子股份有限公司 | Host device of two-bus communication circuit and two-bus communication circuit |
| CN109764503A (en) * | 2019-01-15 | 2019-05-17 | 海信（广东）空调有限公司 | Power-supplying circuit and air conditioner outside a kind of air conditioning chamber |
| CN109743051A (en) * | 2019-03-22 | 2019-05-10 | 广东美的制冷设备有限公司 | Drive control circuit and household appliance |
| CN110285552A (en) * | 2019-07-01 | 2019-09-27 | 珠海格力电器股份有限公司 | Line control machine power-supplying circuit, air-conditioning internal machine and air-conditioning system |
| CN110762808A (en) * | 2019-10-31 | 2020-02-07 | 广东美的制冷设备有限公司 | Drive control circuit and air conditioner |
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