CN111697996A - Simulation and communication monitoring device and method for indoor and outdoor units of air conditioner - Google Patents

Simulation and communication monitoring device and method for indoor and outdoor units of air conditioner Download PDF

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Publication number
CN111697996A
CN111697996A CN202010630334.2A CN202010630334A CN111697996A CN 111697996 A CN111697996 A CN 111697996A CN 202010630334 A CN202010630334 A CN 202010630334A CN 111697996 A CN111697996 A CN 111697996A
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China
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air conditioner
communication
current loop
indoor
unit
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姜陈宁
隋一赛
佐井阳
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Anhui Zhongjia Zhikang Technology Co ltd
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Anhui Zhongjia Zhikang Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner indoor and outdoor unit simulation and communication monitoring device which mainly comprises a power supply circuit, an MCU (microprogrammed control unit), a current loop communication circuit, a wireless communication module and an HMI (human machine interface), wherein the current loop communication circuit is mutually connected with the MCU; the power circuit supplies power to the device; the current loop communication circuit is used for providing a circuit structure which works in a mode of simulating an air conditioner internal unit, a mode of simulating an air conditioner external unit and a mode of monitoring the communication of the internal unit and the external unit; the MCU is used for controlling the current loop communication circuit to enable the current loop communication circuit to work in a corresponding mode, acquiring the operation data and the communication data of the indoor and outdoor units of the air conditioner, and meeting the simulation requirements of the indoor and outdoor units of the air conditioner of different brands and models. The method comprises an air conditioner indoor unit simulation mode, an air conditioner outdoor unit simulation mode and an air conditioner indoor and outdoor unit monitoring communication mode, and is suitable for the air conditioners with two existing air conditioner current loop communication circuits. The invention can effectively acquire the communication data of the indoor unit and the outdoor unit in time on the premise of not influencing the normal work of the air conditioner.

Description

Simulation and communication monitoring device and method for indoor and outdoor units of air conditioner
Technical Field
The invention relates to the field of research, development, debugging, production and after-sale maintenance of air conditioners, in particular to a device and a method for monitoring simulation and communication of indoor and outdoor units of an air conditioner.
Background
The air conditioner is inevitably abnormal in the testing and debugging process, if enough data can be used for abnormal analysis, great help can be provided for solving the problem, and the communication of the indoor unit and the outdoor unit contains more critical data, such as working modes, compressor instruction rotating speed, temperature sensors, fault information and the like. Therefore, if the information can be acquired in time, the test and the maintenance of the air conditioner can be performed with great significance.
Then, most air conditioner current loop communication circuits on the market are divided into two structures: one structure is that the positive pole of the current loop power supply flows out, and the optical coupler is isolated by a communication circuit of an internal machine and an external machine and returns to a power supply zero line (a power supply negative pole), the circuit structure and the current direction are shown in figure 1, and the brand air conditioner with the circuit structure comprises a Haler, a GeLi, an Aux, a Haixin, a Yangzi and a TCL; the other structure is that current loop current flows out from a power supply zero line (a current loop power supply positive electrode), passes through a communication circuit isolation optocoupler of the inner machine and the outer machine and returns to a power supply negative electrode, a circuit structure and a current direction are shown in figure 2, and brand air conditioners with the circuit structure are attractive.
At present, no communication monitoring and simulation device can simultaneously consider two air conditioner current loop communication circuits to realize dynamic monitoring of communication between indoor and outdoor units of an air conditioner, and therefore a novel air conditioner indoor and outdoor unit simulation and communication monitoring device is urgently needed to solve the problems.
Disclosure of Invention
The invention aims to provide an indoor and outdoor unit simulation and communication monitoring device and method for an air conditioner, which can timely and effectively acquire indoor and outdoor unit communication data on the premise of not influencing the normal work of the air conditioner.
In order to solve the technical problems, the invention adopts a technical scheme that: the simulation and communication monitoring device for the indoor machine and the outdoor machine of the air conditioner mainly comprises a power supply circuit, an MCU, a current loop communication circuit, a wireless communication module and an HMI, wherein the current loop communication circuit is mutually connected with the MCU;
the power circuit is respectively connected with the current loop communication circuit, the MCU and the wireless communication module to supply power to the device;
the current loop communication circuit is used for providing a circuit structure which works in a mode of simulating an air conditioner internal unit, a mode of simulating an air conditioner external unit and a mode of monitoring the communication of the internal unit and the external unit;
the MCU is used for controlling the current loop communication circuit to enable the current loop communication circuit to work in a corresponding mode, acquiring the operation data and the communication data of the indoor and outdoor units of the air conditioner, and meeting the simulation requirements of the indoor and outdoor units of the air conditioner of different brands and models;
the wireless communication module is used for uploading and storing the data monitored by the MCU to the storage device;
the HMI is used for setting the corresponding working mode of the device and displaying data.
IN a preferred embodiment of the present invention, the current loop communication circuit mainly includes a communication power circuit, communication mode switching relays KA 1-KA 5 and KB 1-KB 5, a data receiving isolating optocoupler OP2, a data transmitting isolating optocoupler OP1, ports ACL _ IN, ACN _ IN, and S for simulating connection between the internal and external machines, ports SI and SO for monitoring communication connection between the internal and external machines, a data reading port RXD, and a data transmitting port TXD.
Furthermore, the communication power supply circuit comprises resistors R1-R3, a rectifier diode D1, a capacitor C1, a zener diode ZD1, ZD2 and an electrolytic capacitor E1, wherein the anodes of the resistors R1, R2 and the rectifier diode D1 are sequentially connected IN series, one end of the resistor R1 is connected with a port ACL _ IN, one end of the resistor R3, the anode of the electrolytic capacitor E1, one end of the capacitor C1 and one end of the zener diode ZD1 are connected IN parallel and then connected with the cathode of the rectifier diode D1, the zener diode ZD2 is connected IN series with the ZD1, and the other end of the resistor R3, the cathode of the electrolytic capacitor E1, the other end of the capacitor C1 and the other end of the zener diode ZD2 are connected IN parallel and then connected with the;
resistors R6-R7, R10, a rectifier diode D3, a capacitor C2, a zener diode ZD4, ZD5 and an electrolytic capacitor E2, wherein the cathodes of the resistors R6, R7 and the rectifier diode D3 are sequentially connected IN series, one end of the resistor R6 is connected with a port ACL _ IN, one end of the resistor R10, the cathode of the electrolytic capacitor E2, one end of the capacitor C2 and one end of the zener diode ZD4 are connected IN parallel and then connected with the anode of the rectifier diode D3, the zener diode ZD14 is connected IN series with the ZD15, and the other end of the resistor R10, the anode of the electrolytic capacitor E1, the other end of the capacitor C2 and the other end of the zener diode ZD5 are connected IN parallel and then connected with the.
In a preferred embodiment of the present invention, the wireless communication module is a Wi-Fi communication module or/and a bluetooth communication module.
In a preferred embodiment of the present invention, the device further includes a USB read-write module connected to the MCU, for storing data tested by the device in the local USB disk.
In order to solve the technical problem, the invention adopts another technical scheme that: the method comprises the steps of simulating an air conditioner indoor unit mode, simulating an air conditioner outdoor unit mode and monitoring an indoor and outdoor unit communication mode;
when the mode of the air conditioner indoor unit is simulated, the air conditioner indoor and outdoor unit simulation and communication monitoring device is connected with an outdoor unit of a simulated air conditioner, the simulated air conditioner outdoor unit supplies power, the outdoor unit of the simulated air conditioner is controlled and monitored through mutual communication, and the running state of the outdoor unit of the simulated air conditioner is obtained;
when the air conditioner outdoor unit mode is simulated, the air conditioner indoor and outdoor unit simulation and communication monitoring device is connected with the indoor unit of the simulated air conditioner, and responds to the control information of the indoor unit of the simulated air conditioner through mutual communication to obtain the control state of the indoor unit of the simulated air conditioner;
when the communication modes of the indoor unit and the outdoor unit of the air conditioner are monitored, the simulation and communication monitoring device of the indoor unit and the outdoor unit of the air conditioner is connected in series in the current loop communication circuit of the indoor unit and the outdoor unit of the air conditioner, and the running information and the state of the air conditioner are obtained.
In a preferred embodiment of the present invention, the current loop communication circuit of the indoor unit and the outdoor unit of the air conditioner comprises a first current loop communication circuit structure of the indoor unit and the outdoor unit of the air conditioner and a second current loop communication circuit structure of the indoor unit and the outdoor unit of the air conditioner;
the current loop of the current loop communication circuit structure of the internal and external machines of the first air conditioner is that the positive electrode of the power supply flows out and returns to the zero line of the power supply;
the current loop of the current loop communication circuit structure of the internal and external machines of the second air conditioner is that the zero line of the power supply flows out and returns to the negative pole of the power supply;
aiming at a current loop communication circuit structure of an internal and external machine of a first air conditioner, when an internal machine mode of the air conditioner is simulated, an MCU IN the internal and external machine simulation and communication monitoring device of the air conditioner controls the relays KA1, KA4 and KA5 to be closed, and current flows to a port ACL _ IN from a port S through KA4, data sending isolation optocouplers OP1 and KA1, data receiving isolation optocouplers OP2 and KA5 IN sequence;
aiming at the current loop communication circuit structure of the second air conditioner indoor and outdoor unit, when an air conditioner indoor unit mode is simulated, the MCU IN the air conditioner indoor and outdoor unit simulation and communication monitoring device controls the relays KB1, KB4 and KB5 to be closed, and current flows to the port ACL _ IN from the port S sequentially through the KB4, the data receiving isolation optocoupler OP2, the KB1, the data sending isolation optocoupler OP1 and the KB 5.
In a preferred embodiment of the present invention, the current loop communication circuit of the indoor unit and the outdoor unit of the air conditioner comprises a first current loop communication circuit structure of the indoor unit and the outdoor unit of the air conditioner and a second current loop communication circuit structure of the indoor unit and the outdoor unit of the air conditioner;
the current loop of the current loop communication circuit structure of the internal and external machines of the first air conditioner is that the positive electrode of the power supply flows out and returns to the zero line of the power supply;
the current loop of the current loop communication circuit structure of the internal and external machines of the second air conditioner is that the zero line of the power supply flows out and returns to the negative pole of the power supply;
aiming at a current loop communication circuit structure of an internal machine and an external machine of a first air conditioner, when an external machine mode of the air conditioner is simulated, an MCU in the device for simulating and monitoring the internal machine and the external machine of the air conditioner controls relays KA1, KA2 and KA3 to be closed, current is generated by a communication power supply circuit and flows to a port S through resistors R1, R2, D1 to KA2, data transmission isolation optocouplers OP1 and KA1, and data receiving isolation optocouplers OP2 and KA 3;
aiming at the current loop communication circuit structure of the second air conditioner indoor and outdoor unit, when the mode of the air conditioner outdoor unit is simulated, the MCU IN the air conditioner indoor and outdoor unit simulation and communication monitoring device controls the relays KB1, KB2 and KB3 to be closed, current is generated by a communication power supply circuit, and flows to a port S from a port ACN _ IN through a KB2, a data receiving isolation optocoupler OP2, a KB1, a data sending isolation optocoupler OP1 and a KB3 IN sequence.
The invention has the beneficial effects that:
(1) according to the invention, the communication circuit monitoring port is connected in series to the communication line of the indoor unit and the outdoor unit of the air conditioner, so that the communication data of the indoor unit and the outdoor unit are obtained on the premise of not influencing the normal work of the air conditioner, and the collected communication instruction is sent to the hands of a user through the wireless communication module, thereby greatly improving the working efficiency; the device belongs to a low-power-consumption product, and cannot influence the power of the air conditioner and the work of the air conditioner;
(2) the invention connects the communication line of the indoor and outdoor units of the air conditioner through the current loop communication circuit, the master control MCU can work in various modes by controlling the internal relay to switch the communication circuit, and the simulation of the indoor and outdoor units of the air conditioner with different brands and models is satisfied, thereby achieving the effect of one machine with multiple purposes;
(3) the invention can carry out dynamic monitoring and visual operation on the indoor and outdoor communication of the air conditioner, and can greatly improve the efficiency of the air conditioner in research, development, debugging, production and maintenance through the communication data acquired by a mobile phone, a PC or a cloud in real time;
(4) the invention has the advantages of small size, light weight, simple operation, convenient communication, simple wiring and the like.
Drawings
FIG. 1 is a schematic diagram of a current loop communication circuit structure and a current loop of an internal and external machine of a first air conditioner;
FIG. 2 is a schematic diagram of a current loop communication circuit structure and a current loop of the indoor and outdoor units of the second air conditioner;
FIG. 3 is a block diagram of an exemplary embodiment of an indoor and outdoor unit simulation and communication monitoring apparatus for an air conditioner;
FIG. 4 is a diagram of the current loop communication circuit;
FIG. 5 is a circuit diagram of a WiFi communication module;
FIG. 6 is a circuit diagram of a USB read/write module;
FIG. 7 is a schematic diagram of the present invention simulating the operating mode of an air conditioner indoor unit;
FIG. 8 is a schematic view of an air conditioner outdoor unit operating mode simulated according to the present invention;
FIG. 9 is a schematic view of the present invention for monitoring the operation mode of the indoor and outdoor units of the air conditioner;
FIG. 10 is a schematic view showing a communication current when an external unit of a Haler air conditioner is simulated;
FIG. 11 is a schematic view of the communication current when simulating a Haier air conditioner indoor unit;
fig. 12 is a schematic view of communication current when an external unit of an air conditioner is simulated;
FIG. 13 is a schematic view of communication current when simulating an American air conditioner indoor unit;
fig. 14 is a schematic view of monitoring current of communication between an air conditioner indoor unit and an air conditioner outdoor unit.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Referring to fig. 3, an embodiment of the invention includes:
a simulation and communication monitoring device for indoor and outdoor machines of an air conditioner mainly comprises a power supply circuit, an MCU, a current loop communication circuit, a wireless communication module, an HMI and a USB read-write module, wherein the current loop communication circuit is mutually connected with the MCU. The power circuit is respectively connected with the current loop communication circuit, the MCU and the wireless communication module to supply power to the device; the current loop communication circuit is used for providing a circuit structure which works in a mode of simulating an air conditioner internal unit, a mode of simulating an air conditioner external unit and a mode of monitoring the communication of the internal unit and the external unit; the MCU is used for controlling the current loop communication circuit to enable the current loop communication circuit to work in a corresponding mode, acquiring the operation data and the communication data of the indoor and outdoor units of the air conditioner, and meeting the simulation requirements of the indoor and outdoor units of the air conditioner of different brands and models; the wireless communication module is used for uploading and storing the data monitored by the MCU to the storage device; the HMI is used for setting a corresponding working mode of the device and displaying data; and the USB read-write module is used for storing the data tested by the device in a local USB flash disk.
Preferably, the MCU adopts a singlechip STM32F103RET6, and has small volume and strong function.
Referring to fig. 4, the current loop communication circuit mainly includes a communication power circuit, communication mode switching relays KA 1-KA 5 and KB 1-KB 5, a data receiving isolating optocoupler OP2, a data transmitting isolating optocoupler OP1, ports ACL _ IN, ACN _ IN, and S for simulating connection of an internal and external machine, ports SI and SO for monitoring communication connection of the internal and external machine, a data reading port RXD, and a data transmitting port TXD. The data reading port RXD and the data sending port TXD are used for being connected with the MCU communication end. The circuit components and their connections are shown in the figure.
Furthermore, the communication power supply circuit comprises resistors R1-R3, a rectifier diode D1, a capacitor C1, a zener diode ZD1, ZD2 and an electrolytic capacitor E1, wherein the anodes of the resistors R1, R2 and the rectifier diode D1 are sequentially connected IN series, one end of the resistor R1 is connected with a port ACL _ IN, one end of the resistor R3, the anode of the electrolytic capacitor E1, one end of the capacitor C1 and one end of the zener diode ZD1 are connected IN parallel and then connected with the cathode of the rectifier diode D1, the zener diode ZD2 is connected IN series with the ZD1, and the other end of the resistor R3, the cathode of the electrolytic capacitor E1, the other end of the capacitor C1 and the other end of the zener diode ZD2 are connected IN parallel and then connected with the; resistors R6-R7, R10, a rectifier diode D3, a capacitor C2, a zener diode ZD4, ZD5 and an electrolytic capacitor E2, wherein the cathodes of the resistors R6, R7 and the rectifier diode D3 are sequentially connected IN series, one end of the resistor R6 is connected with a port ACL _ IN, one end of the resistor R10, the cathode of the electrolytic capacitor E2, one end of the capacitor C2 and one end of the zener diode ZD4 are connected IN parallel and then connected with the anode of the rectifier diode D3, the zener diode ZD14 is connected IN series with the ZD15, and the other end of the resistor R10, the anode of the electrolytic capacitor E1, the other end of the capacitor C2 and the other end of the zener diode ZD5 are connected IN parallel and then connected with the. After the power supply is switched on, the AC220V is divided by resistors R1, R2 and R3, D1 is subjected to half-wave rectification, then is filtered by an electrolytic capacitor E1, and is stabilized by voltage stabilizing diodes ZD1 and ZD2 to obtain stable direct-current voltage with positive top and negative bottom; similarly, the AC220V is divided by resistors R6, R7 and R10, half-wave rectified by D3, filtered by an electrolytic capacitor E2, and stabilized by voltage stabilizing diodes ZD4 and ZD5 to obtain a stable dc voltage with negative and positive upper parts and negative and positive lower parts.
The wireless communication module adopts a Wi-Fi communication module or/and a Bluetooth communication module, the Wi-Fi communication module or/and the Bluetooth communication module can be used for performing wireless operation and data check on the device through other wireless equipment, and monitored data can be uploaded and stored in storage equipment such as a PC (personal computer), a cloud terminal and a mobile phone. Referring to fig. 5, the Wi-Fi communication module includes an electrolytic capacitor E21, a capacitor C21, a capacitor C23, a capacitor C24, a resistor R21, a resistor R22, and an interface CN 3. The anode of the electrolytic capacitor E21 and one end of the capacitor C21 are connected in parallel and then connected with a +5V voltage and a power supply pin of CN3, and the cathode of the electrolytic capacitor E21, the other end of the capacitor C11 are grounded and a ground pin of CN 3; one end of the resistor R21 is connected with the +3.3V voltage, the other end of the resistor R21 is connected with the data receiving pin of the CN3, one end of the resistor R22 is connected with the +3.3V voltage, and the other end of the resistor R22 is connected with the data sending pin of the CN 3; one end of the capacitor C23 is connected to the data transmission pin of CN3, and the other end is grounded, and one end of the capacitor C24 is connected to the data reception pin of CN3, and the other end is grounded. The circuit components and their connections are shown in the figure. If a Bluetooth communication module is adopted, the existing conventional Bluetooth communication circuit can be adopted.
Referring to fig. 6, the USB read/write module employs a file management control chip IC3, with a model number CH376S, and its peripheral circuit components and their connection relationships are shown in the figure. The data of testing can be saved in local USB flash disk when testing, also can upload to the high in the clouds through the wiFi module, the remote collection of the data of being convenient for.
During the use, establish ties the communication circuit monitoring port to the air conditioner indoor outer machine communication line, under the prerequisite that does not influence air conditioner self normal work, acquire the communication data of indoor outer machine, in the communication instruction that will gather sends the user hand through wireless communication module, greatly improved work efficiency. The device has advantages such as small and exquisite light, easy operation, communication facility, wiring are simple, belongs to low-power consumption product, can not exert an influence to air conditioner power, can not influence air conditioner work yet.
By utilizing the device, the invention also provides a simulation and communication monitoring method for the indoor unit and the outdoor unit of the air conditioner, which comprises a simulation air conditioner indoor unit mode, a simulation air conditioner outdoor unit mode and a monitoring indoor unit and outdoor unit communication mode.
Referring to fig. 7, when the mode of the air conditioner indoor unit is simulated, the air conditioner indoor and outdoor unit simulation and communication monitoring device is connected to the outdoor unit of the simulated air conditioner, the power is supplied by the outdoor unit of the simulated air conditioner, the outdoor unit of the simulated air conditioner is controlled and monitored through mutual communication, and the running state of the outdoor unit of the simulated air conditioner is obtained;
with reference to fig. 8, when the air conditioner outdoor unit mode is simulated, the air conditioner indoor and outdoor unit simulation and communication monitoring device is connected to the indoor unit of the simulated air conditioner, and responds to the control information of the indoor unit of the simulated air conditioner through mutual communication to obtain the control state of the indoor unit of the simulated air conditioner;
referring to fig. 9, when monitoring the communication mode of the indoor unit and the outdoor unit, the simulation and communication monitoring device for the indoor unit and the outdoor unit of the air conditioner is connected in series in the current loop communication circuit of the indoor unit and the outdoor unit of the air conditioner, so as to obtain the operation information and the state of the air conditioner.
In practical application, the current loop communication circuit of the indoor unit and the outdoor unit of the air conditioner comprises a first current loop communication circuit structure of the indoor unit and the outdoor unit of the air conditioner and a second current loop communication circuit structure of the indoor unit and the outdoor unit of the air conditioner. The current loop of the first air conditioner internal and external machine current loop communication circuit structure is that the positive electrode of a power supply flows out and returns to the zero line of the power supply, and brand models belonging to the circuit structure comprise a sea, a Gelii, an Oex, a sea letter, a raiser and a TCL; the current loop of the second air conditioner internal and external machine current loop communication circuit structure is that a power supply zero line flows out and returns to a power supply cathode, and brand models belonging to the circuit structure include American.
The working principles of the two internal and external current loop communication circuits of the air conditioner in different working modes are described below:
for example, by simulating an external unit of a hail air conditioner, a communication circuit of the internal unit and the external unit of the hail air conditioner belongs to a current loop communication circuit structure of the internal unit and the external unit of a first air conditioner; the device is connected according to the working mode of the simulated air conditioner external unit shown in figure 8. According to a current loop communication circuit diagram 10, the relays KA1, KA2 and KA3 are controlled to be closed by the MCU, after the power supply is switched on, the AC220V is subjected to voltage division by resistors R1, R2 and R3, D1 is subjected to half-wave rectification, then is filtered by an electrolytic capacitor E1, and is subjected to voltage stabilization by voltage stabilizing diodes ZD1 and ZD2 to obtain a stable direct current voltage, the current passes through the KA2 to a data transmission isolation optocoupler OP1, and the MCU controls the OP1 to be in a conducting state at the moment, and the device is in a data receiving state; the current passes through OP1, then passes through KA1, a diode D4 and a current-limiting resistor R14 to the primary side of a data receiving optocoupler OP2, when the indoor unit has data transmission, the primary optocoupler of OP2 is conducted, and returns to the circuit of the indoor unit through KA3 to form a current path. Then a corresponding data waveform is generated on the secondary side of the OP2, and the MCU can acquire data of the internal unit through the port RXD. After receiving, the MCU sends out the data through the TXD, and the internal unit also obtains the data replied by the external unit through the current loop to complete the communication question and answer of the internal unit and the external unit. The mode can simulate an external unit of a Haier air conditioner, and can also be used for simulating a lattice external unit, an Oerson internal unit, a Haixin internal unit, a loudspeaker internal unit and a TCL internal unit.
When the device is set to simulate the working mode of the internal Haler machine, the principle is similar to the principle, as shown in fig. 11, the MCU in the device for simulating the internal and external machines of the air conditioner and the communication monitoring device controls the relays KA1, KA4 and KA5 to be closed, the current loop power supply is provided by the external machine, and the circuit in the device does not need to be connected into a circuit part and can be completed by the configuration switching of the relays. The current flows from the port S to the port ACL _ IN through the KA4, the data transmitting isolating optocouplers OP1, the KA1 and the data receiving isolating optocouplers OP2, KA5 IN sequence. The mode can simulate an internal unit of a Haire air conditioner, and also can be used for simulating a lattice internal unit, an Oerson external unit, a Haixin external unit, a Yangzi external unit and a TCL external unit.
For example, the American air conditioner external unit is simulated, and the American air conditioner internal and external unit communication circuit belongs to a second air conditioner internal and external unit current loop communication circuit structure. Similarly, with reference to fig. 12, the MCU IN the air conditioner indoor and outdoor unit simulation and communication monitoring apparatus controls the relays KB1, KB2, and KB3 to be closed, and the current generated by the communication power circuit flows from the port ACN _ IN to the port S via the KB2, the data receiving isolating optocoupler OP2, the KB1, and the data transmitting isolating optocoupler OP1, KB3 IN sequence.
When the device is set to be in the working mode of an indoor unit simulating beauty, the principle is similar to that described above, as shown in fig. 13, the MCU in the air conditioner indoor and outdoor unit simulation and communication monitoring device controls the relays KB1, KB4 and KB5 to be closed, the current loop power supply is provided by the outdoor unit, and the circuit in the device does not need to be connected into the circuit part and can be completed by the configuration switching of the relays. The current flows from the port S to the port ACL _ IN sequentially through the KB4, the data receiving isolating optocoupler OP2, the KB1, the data transmitting isolating optocoupler OP1, and the KB 5.
When the device is set to the monitoring mode, the device can be applied to various types of current loop communication modes. The rectifier bridge DB2 in the circuit can rectify the current loop path, so that the direction of the device is not needed to be distinguished when the device is connected with the indoor unit and the outdoor unit of the air conditioner in series, and the connection is greatly facilitated. The current loop path is as shown in fig. 14, current flows from the port SI through the rectifier bridge DB2, the rectifier diode D4, the resistors R14 and R16, the capacitor C3, the diode D5, the data receiving isolation optocoupler OP2, and flows back to the port SO. The MCU can acquire communication information through the RXD port to analyze and monitor.
Through above-mentioned mode, the device can detect the common fault detection type of air conditioner: sensor faults, compressor commanded speed, operating mode, fault information, etc.
The invention connects the communication line of the indoor and outdoor units of the air conditioner through the current loop communication circuit, the master control MCU can work in various modes by controlling the internal relay to switch the communication circuit, and the simulation of the indoor and outdoor units of the air conditioner with different brands and models is satisfied, thereby achieving the effect of one machine with multiple purposes; therefore, dynamic monitoring and visual operation can be carried out on indoor and outdoor communication of the air conditioner, and the efficiency of the air conditioner in research, development, debugging, production and maintenance can be greatly improved through communication data acquired by a mobile phone, a PC or a cloud in real time.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (8)

1. A simulation and communication monitoring device for indoor and outdoor machines of an air conditioner is characterized by mainly comprising a power supply circuit, an MCU, a current loop communication circuit, a wireless communication module and an HMI, wherein the current loop communication circuit is connected with the MCU;
the power circuit is respectively connected with the current loop communication circuit, the MCU and the wireless communication module to supply power to the device;
the current loop communication circuit is used for providing a circuit structure which works in a mode of simulating an air conditioner internal unit, a mode of simulating an air conditioner external unit and a mode of monitoring the communication of the internal unit and the external unit;
the MCU is used for controlling the current loop communication circuit to enable the current loop communication circuit to work in a corresponding mode, acquiring the operation data and the communication data of the indoor and outdoor units of the air conditioner, and meeting the simulation requirements of the indoor and outdoor units of the air conditioner of different brands and models;
the wireless communication module is used for uploading and storing the data monitored by the MCU to the storage device;
the HMI is used for setting the corresponding working mode of the device and displaying data.
2. The indoor and outdoor unit simulation and communication monitoring device of the air conditioner as claimed IN claim 1, wherein the current loop communication circuit mainly comprises a communication power circuit, communication mode switching relays KA 1-KA 5 and KB 1-KB 5, a data receiving isolating optical coupler OP2, a data transmitting isolating optical coupler OP1, ports ACL _ IN, ACN _ IN, S for simulating connection of indoor and outdoor units, ports SI, SO for monitoring communication connection of indoor and outdoor units, a data reading port RXD, and a data transmitting port TXD.
3. The simulation and communication monitoring device for the indoor and outdoor units of the air conditioner as claimed IN claim 2, wherein the communication power supply circuit comprises resistors R1-R3, a rectifier diode D1, a capacitor C1, zener diodes ZD1, ZD2, an electrolytic capacitor E1, resistors R1, R2 and the anode of a rectifier diode D1 are sequentially connected IN series, one end of the resistor R1 is connected with a port ACL _ IN, one end of the resistor R3, the anode of the electrolytic capacitor E1, one end of the capacitor C1 and one end of the zener diode ZD1 are connected IN parallel and then connected with the cathode of the rectifier diode D1, the zener diode ZD2 is connected IN series with ZD1, and the other end of the resistor R3, the cathode of the electrolytic capacitor E1, the other end of the capacitor C1 and the other end of the zener diode ZD2 are connected IN parallel and then connected with the port ACN _ IN;
resistors R6-R7, R10, a rectifier diode D3, a capacitor C2, a zener diode ZD4, ZD5 and an electrolytic capacitor E2, wherein the cathodes of the resistors R6, R7 and the rectifier diode D3 are sequentially connected IN series, one end of the resistor R6 is connected with a port ACL _ IN, one end of the resistor R10, the cathode of the electrolytic capacitor E2, one end of the capacitor C2 and one end of the zener diode ZD4 are connected IN parallel and then connected with the anode of the rectifier diode D3, the zener diode ZD14 is connected IN series with the ZD15, and the other end of the resistor R10, the anode of the electrolytic capacitor E1, the other end of the capacitor C2 and the other end of the zener diode ZD5 are connected IN parallel and then connected with the.
4. The device for simulating and monitoring the communication of indoor and outdoor units of an air conditioner as claimed in claim 1, wherein the wireless communication module is a Wi-Fi communication module or/and a bluetooth communication module.
5. The air conditioner indoor and outdoor unit simulation and communication monitoring device as claimed in claim 1, further comprising a USB read-write module connected to the MCU for storing data of the device test in the local USB disk.
6. A simulation and communication monitoring method for indoor and outdoor units of an air conditioner is characterized by comprising a simulation air conditioner indoor unit mode, a simulation air conditioner outdoor unit mode and a monitoring indoor and outdoor unit communication mode;
when the mode of the air conditioner indoor unit is simulated, the air conditioner indoor and outdoor unit simulation and communication monitoring device is connected with an outdoor unit of a simulated air conditioner, the simulated air conditioner outdoor unit supplies power, the outdoor unit of the simulated air conditioner is controlled and monitored through mutual communication, and the running state of the outdoor unit of the simulated air conditioner is obtained;
when the air conditioner outdoor unit mode is simulated, the air conditioner indoor and outdoor unit simulation and communication monitoring device is connected with the indoor unit of the simulated air conditioner, and responds to the control information of the indoor unit of the simulated air conditioner through mutual communication to obtain the control state of the indoor unit of the simulated air conditioner;
when the communication modes of the indoor unit and the outdoor unit of the air conditioner are monitored, the simulation and communication monitoring device of the indoor unit and the outdoor unit of the air conditioner is connected in series in the current loop communication circuit of the indoor unit and the outdoor unit of the air conditioner, and the running information and the state of the air conditioner are obtained.
7. The method as claimed in claim 6, wherein the current loop communication circuit comprises a first current loop communication circuit structure for inside and outside air conditioners, a second current loop communication circuit structure for inside and outside air conditioners;
the current loop of the current loop communication circuit structure of the internal and external machines of the first air conditioner is that the positive electrode of the power supply flows out and returns to the zero line of the power supply;
the current loop of the current loop communication circuit structure of the internal and external machines of the second air conditioner is that the zero line of the power supply flows out and returns to the negative pole of the power supply;
aiming at a current loop communication circuit structure of an internal and external machine of a first air conditioner, when an internal machine mode of the air conditioner is simulated, an MCU IN the internal and external machine simulation and communication monitoring device of the air conditioner controls the relays KA1, KA4 and KA5 to be closed, and current flows to a port ACL _ IN from a port S through KA4, data sending isolation optocouplers OP1 and KA1, data receiving isolation optocouplers OP2 and KA5 IN sequence;
aiming at the current loop communication circuit structure of the second air conditioner indoor and outdoor unit, when an air conditioner indoor unit mode is simulated, the MCU IN the air conditioner indoor and outdoor unit simulation and communication monitoring device controls the relays KB1, KB4 and KB5 to be closed, and current flows to the port ACL _ IN from the port S sequentially through the KB4, the data receiving isolation optocoupler OP2, the KB1, the data sending isolation optocoupler OP1 and the KB 5.
8. The method as claimed in claim 6, wherein the current loop communication circuit comprises a first current loop communication circuit structure for inside and outside air conditioners, a second current loop communication circuit structure for inside and outside air conditioners;
the current loop of the current loop communication circuit structure of the internal and external machines of the first air conditioner is that the positive electrode of the power supply flows out and returns to the zero line of the power supply;
the current loop of the current loop communication circuit structure of the internal and external machines of the second air conditioner is that the zero line of the power supply flows out and returns to the negative pole of the power supply;
aiming at a current loop communication circuit structure of an internal machine and an external machine of a first air conditioner, when an external machine mode of the air conditioner is simulated, an MCU in the device for simulating and monitoring the internal machine and the external machine of the air conditioner controls relays KA1, KA2 and KA3 to be closed, current is generated by a communication power supply circuit and flows to a port S through resistors R1, R2, D1 to KA2, data transmission isolation optocouplers OP1 and KA1, and data receiving isolation optocouplers OP2 and KA 3;
aiming at the current loop communication circuit structure of the second air conditioner indoor and outdoor unit, when the mode of the air conditioner outdoor unit is simulated, the MCU IN the air conditioner indoor and outdoor unit simulation and communication monitoring device controls the relays KB1, KB2 and KB3 to be closed, current is generated by a communication power supply circuit, and flows to a port S from a port ACN _ IN through a KB2, a data receiving isolation optocoupler OP2, a KB1, a data sending isolation optocoupler OP1 and a KB3 IN sequence.
CN202010630334.2A 2020-07-03 2020-07-03 Simulation and communication monitoring device and method for indoor and outdoor units of air conditioner Pending CN111697996A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112460748A (en) * 2020-11-23 2021-03-09 珠海格力电器股份有限公司 Communication device and method for internal and external machines and direct-current power supply variable frequency air conditioner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112460748A (en) * 2020-11-23 2021-03-09 珠海格力电器股份有限公司 Communication device and method for internal and external machines and direct-current power supply variable frequency air conditioner

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