WO2019165821A1 - Procédé de commutation de bande de fréquence de communication de système de climatisation, système de climatisation et dispositif de climatisation - Google Patents

Procédé de commutation de bande de fréquence de communication de système de climatisation, système de climatisation et dispositif de climatisation Download PDF

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Publication number
WO2019165821A1
WO2019165821A1 PCT/CN2018/120649 CN2018120649W WO2019165821A1 WO 2019165821 A1 WO2019165821 A1 WO 2019165821A1 CN 2018120649 W CN2018120649 W CN 2018120649W WO 2019165821 A1 WO2019165821 A1 WO 2019165821A1
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WO
WIPO (PCT)
Prior art keywords
frequency band
communication
noise
host device
air conditioning
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Application number
PCT/CN2018/120649
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English (en)
Chinese (zh)
Inventor
玉维友
李忠正
唐杰
刘泉洲
王文灿
邓忠文
叶铁英
陈葆荣
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珠海格力电器股份有限公司
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Publication of WO2019165821A1 publication Critical patent/WO2019165821A1/fr

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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
    • 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
    • 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
    • F24F11/56—Remote control
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices

Definitions

  • the present invention relates to the field of power communication technologies, and in particular, to a communication band switching method, an air conditioning system, and an air conditioning device for an air conditioning system.
  • power line carrier communication technology has been widely used in electric fields, photovoltaic power stations and other fields as an emerging communication technology. Its communication mechanism is to couple communication signals into power lines, so it is necessary to effectively prevent communication signal loss caused by electromagnetic interference.
  • the state has strict electromagnetic compatibility standards for electrical equipment, and the interference required to transmit electrical equipment to the power grid should be within certain limits. If power line carrier communication technology is used for air conditioning systems, communication signals and EMC (Electromagnetic Compatibility) Sexuality requirements will conflict, which will cause the air conditioner's power to be too large and the noise is large during the use of the air conditioner, resulting in serious loss of communication signals and poor communication.
  • EMC Electromagnetic Compatibility
  • the embodiment of the invention provides a communication frequency band switching method, an air conditioning system and an air conditioning device of an air conditioning system, so as to at least solve the technical problem that the power line carrier communication efficiency is low when the air conditioning system is in operation.
  • a method for switching a communication band of an air conditioning system includes at least a host device and a slave device, including: the host device acquiring a plurality of electromagnetic noises of the device bus; The host device determines a target noise frequency band according to the plurality of electromagnetic noises; and the host device switches the current communication frequency band to the target noise frequency band.
  • the method further includes: acquiring, by the slave device, multiple electromagnetic noises of the device bus and a communication frequency band of the host device, Obtaining device communication information; the slave device determines a target slave communication frequency band according to the device communication information; and the slave device switches the current communication frequency band to the target slave communication frequency band.
  • the determining, by the host device, the target noise frequency band according to the multiple electromagnetic noises the host device calculates a plurality of electromagnetic noise values according to the multiple electromagnetic noises; and the host device is configured according to the multiple And a plurality of noise frequency bands corresponding to each electromagnetic noise value; the host device determining the target noise frequency band according to the plurality of noise frequency bands.
  • the method further includes: the host device acquiring a plurality of communication frequency bands; the host device selecting a target fixed in the multiple communication frequency bands The communication frequency band is used as the current communication frequency band, wherein the target fixed communication frequency band is a communication frequency band of the host device preset.
  • the target noise frequency band is a lowest frequency band of the noise value.
  • a storage medium for storing a program, wherein the program, when executed by a processor, controls a device in which the storage medium is located to perform any of the above The communication frequency band switching method of the air conditioning system.
  • a processor configured to execute a program, wherein the program is executed to perform a communication band switching method of the air conditioning system according to any one of the above items.
  • an air conditioning system includes at least: a host device, a slave device, and a main chip, including: the host device is configured to acquire multiple devices to the device bus Electromagnetic noise, the target noise frequency band is determined according to the plurality of electromagnetic noises; and the main chip switches the current communication frequency band to the target noise frequency band.
  • the air conditioning system further includes: the slave device acquiring a plurality of electromagnetic noises of the device bus according to the host device and a communication frequency band of the host device; the slave device according to the plurality of electromagnetic noises and Describe the communication frequency band of the host device, and determine the target slave communication frequency band; the slave device switches the current communication frequency band to the target slave communication frequency band.
  • an air conditioning apparatus at least comprising: a communication module, a noise monitoring module, and a main chip, wherein the communication module is configured to receive and receive in a plurality of frequency bands And transmitting the communication information, the noise monitoring module is configured to acquire a plurality of electromagnetic noises to the device bus, including: the main chip receiving the plurality of electromagnetic noises acquired by the noise monitoring module; a plurality of electromagnetic noises for determining a target noise frequency band; the main chip modulating a current communication frequency band of the communication module to the target noise frequency band.
  • the host device obtains multiple electromagnetic noises of the device bus, and then determines a target noise frequency band according to multiple electromagnetic noises, and the target noise frequency band may be the lowest communication frequency band of electromagnetic noise, thereby dynamically
  • the current communication frequency band is switched to the target noise frequency band to avoid the communication frequency band corresponding to the high peak of the electromagnetic noise of the bus, thereby reducing the electromagnetic noise interference, thereby ensuring that the system communicates with the communication frequency band with the least interference, ensuring the smooth communication, and solving the air conditioning system.
  • FIG. 1 is a flow chart of a method for switching a communication band of an air conditioning system according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for switching a communication band of an air conditioning system according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of internal modules of an optional system device according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a communication frequency band according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an air conditioning system according to an embodiment of the present invention.
  • FIG. 6 is a schematic illustration of an air conditioning apparatus in accordance with an embodiment of the present invention.
  • Power Line Communication It is a unique communication method for power systems.
  • Power carrier communication refers to a technology that uses an existing power line to transmit analog or digital signals at high speed through carrier waves.
  • EMC Electromagnetic Compatibility
  • EMC Electromagnetic Compatibility
  • EMC Electromagnetic Compatibility
  • MCU Microcontroller Unit
  • single-chip microcomputer can also be said to be a single-chip microcomputer.
  • the following embodiments may be applied to, but not limited to, various power devices, and are applied to current power line carrier communication PLC technologies.
  • the power devices in the present invention may include, but are not limited to, an air conditioning system, due to various components of the current air conditioning system. Different levels of noise are generated during operation.
  • the air conditioning system of the present invention can have the listening unit itself. The ability of electromagnetic noise characteristics in each communication frequency band to find the frequency band with the lowest electromagnetic noise, and adjust the communication frequency band of the system to the communication frequency band with the lowest electromagnetic noise, thereby reducing the interference of electromagnetic noise on communication.
  • an embodiment of a method for communication band switching of an air conditioning system is provided. It is noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions. And, although the logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.
  • FIG. 1 is a flowchart of a method for switching a communication band of an air conditioning system according to an embodiment of the present invention.
  • the air conditioning system includes at least a host device and a slave device, as shown in FIG. Including the following steps:
  • Step S102 the host device acquires multiple electromagnetic noises of the device bus.
  • the host device may be a device commonly used in an air conditioning system. After the air conditioning system is started, the host device may preferentially listen to electromagnetic noise of the system bus (corresponding to the device bus) to obtain multiple electromagnetic noises.
  • the noise monitoring module can be used to scan the electromagnetic noise of the monitoring system bus to obtain noise energy, and the noise value corresponding to the noise energy value is calculated by the processor.
  • the implementation manner further includes: the host device acquiring multiple communication frequency bands; and the host device selecting the target fixed communication frequency band of the multiple communication frequency bands as the current communication frequency band, where The target fixed communication frequency band is a communication frequency band of the host device set in advance.
  • the host device and the slave device can select an initial communication frequency band, which can be preset by the user.
  • the communication frequency band used by the host device and each slave device in the present invention can be different, so that after running, The communication band is adjusted according to the electromagnetic noise of the device bus.
  • Step S104 the host device determines the target noise frequency band according to the plurality of electromagnetic noises.
  • the obtained plurality of electromagnetic noises may be used to determine the target noise frequency band, and the noise frequency band to be adjusted is obtained.
  • the host device determines the target noise frequency band according to the multiple electromagnetic noises, and may include: The host device calculates a plurality of electromagnetic noise values according to the plurality of electromagnetic noises; the host device determines a plurality of noise frequency bands corresponding to each electromagnetic noise value according to the plurality of electromagnetic noise values; and the host device determines the target noise frequency band according to the plurality of noise frequency bands.
  • the electromagnetic noise value can be calculated to determine the noise frequency band in which it is located, and the target noise frequency band can be determined.
  • the target noise frequency band is the lowest frequency band of the noise value. Due to the different noise values, the frequency bands in which they are located may or may not be the same. In this case, it is necessary to find the frequency band with the lowest noise value, thereby reducing noise interference.
  • step S106 the host device switches the current communication frequency band to the target noise frequency band.
  • the host device can be used to obtain multiple electromagnetic noises of the device bus, and then the target noise frequency band can be determined according to multiple electromagnetic noises, and the target noise frequency band can be the lowest communication frequency band of electromagnetic noise, so that the current current can be dynamically
  • the communication frequency band is switched to the target noise frequency band to avoid the communication frequency band corresponding to the high peak of the electromagnetic noise of the bus, and the electromagnetic noise interference is reduced, thereby ensuring that the system communicates with the communication frequency band with the least interference to ensure the smooth communication, thereby solving the operation of the air conditioning system.
  • the method further includes: the slave device acquires multiple electromagnetic noises of the device bus and the communication frequency band of the host device, and obtains device communication information; the slave device is configured according to the device The device communication information determines the target slave communication band; the slave device switches the current communication band to the target slave communication band.
  • the slave device is configured to monitor the communication frequency band of the host device and the electromagnetic noise of the device bus obtained by scanning, and determine the communication frequency band of the slave device itself.
  • the slave device can Following the adjusted frequency band of the host device, the communication frequency band can be determined, thereby ensuring that the slave device can also maintain the electromagnetic minimum noise band communication, ensure electromagnetic compatibility, and improve the operation of the air conditioning system.
  • an EMC design method suitable for an air conditioning system is proposed.
  • the purpose of the present invention is to solve the EMC bottleneck problem of the power line carrier communication technology in the air conditioning system, and propose to solve the EMC on the basis of ensuring the communication effect. Problem design.
  • a storage medium for storing a program, wherein a program, when executed by a processor, controls a communication frequency band of an air conditioning system in which the device in which the storage medium is located performs any of the above Switch method.
  • a processor configured to execute a program, wherein the program operates to perform a communication band switching method of the air conditioning system of any of the above.
  • the air conditioning system may include a host device and a slave device. As shown in FIG. 2, the method includes the following steps:
  • step S201 after the system starts running, the host device and the slave device select a fixed frequency band communication.
  • the host device and the slave device in the present invention at least include: an MCU (microcontroller), a communication module, and a noise listening module, and each module can select different channels for communication.
  • 3 is a schematic diagram of an internal module of an optional system device according to an embodiment of the present invention. As shown in FIG. 3, a communication module of the system device is connected to channel 1, and a noise intercepting module is connected to channel 2 through different channels. Communicate.
  • the communication module should have a wide frequency range A, B, C, D ⁇ , and the receiving and transmitting functions can be realized in the wide frequency band; the air conditioning controller MCU can control the modulation communication module.
  • the frequency band of the communication frequency is not limited to the communication frequency.
  • the noise monitoring module has the function of sweeping and listening in the frequency range, and can send the frequency value of the frequency sweep and the corresponding frequency band to the MCU, and the monitoring module also has the function of identifying the signal of the communication module. .
  • Step S202 the host device listening module listens to the system electromagnetic noise.
  • Step S203 the MCU of the host device calculates an electromagnetic noise value according to the electromagnetic noise of the system.
  • Step S204 the host device determines the lowest frequency band of the noise according to the calculated electromagnetic noise value.
  • the noise frequency band in the embodiment of the present invention may include multiple.
  • FIG. 4 is a schematic diagram of a communication frequency band according to an embodiment of the present invention. As shown in FIG. 4, the communication frequency band includes: frequency band A, frequency band B, frequency band C, and frequency band D ⁇ ⁇ . Through the noise interception module, different electromagnetic noises can be heard, and then the noise value can be determined by the operation of the MCU, thereby finding the lowest frequency band of the noise.
  • Step S205 the host device communication module switches the communication frequency band to the lowest noise frequency band.
  • the host device can avoid the noise peak band communication.
  • Step S206 the listening module of the slave device listens to the bus electromagnetic noise and the communication frequency band of the host device.
  • Step S207 the electromagnetic noise value is calculated by the MCU of the slave device.
  • Step S208 the slave device communication module switches the frequency band to maintain the synchronization frequency with the host device, and maintain communication between the host device and the slave device.
  • step S209 the host device and the slave device of the system maintain low electromagnetic noise operation.
  • Another implementation also shows how to choose the lowest noise band.
  • the host device and the slave device preferentially select the fixed frequency band to complete the communication information exchange.
  • the host device preferentially listens to the system bus electromagnetic noise, and sends the information to the MCU to store and calculate the lowest noise frequency of the system; the main chip control communication module switches the transmission channel frequency band to the lowest system noise band.
  • the slave device listens to the bus electromagnetic noise, and at the same time queries the communication frequency band of the host to send the information to the slave MCU.
  • the slave MCU controls the communication module of the slave device to switch the communication band to keep the same frequency as the host.
  • the system avoids the superposition of bus electromagnetic noise by dynamic frequency modulation of the host device and the slave device, thereby ensuring that the system operates with the lowest external electromagnetic noise.
  • the host device and the slave device of the system can be dynamically frequency-modulated to avoid the interference of high electromagnetic noise in the bus electromagnetic noise, and ensure that the system operates with the lowest external electromagnetic noise transmission state, and the power line carrier communication technology is solved.
  • the electromagnetic compatibility problem when the air conditioning system is used effectively ensures the smooth communication.
  • FIG. 5 is a schematic diagram of an air conditioning system according to an embodiment of the present invention.
  • the air conditioning system includes at least: a host device 51, a slave device 53, and a master chip 55, wherein the host device 51 is used to obtain The plurality of electromagnetic noises of the device bus determine the target noise frequency band according to the plurality of electromagnetic noises; the main chip 55 switches the current communication frequency band to the target noise frequency band.
  • the slave device in the air conditioning system acquires a plurality of electromagnetic noises of the device bus and a communication frequency band of the host device according to the host device; the slave device determines the target slave according to the plurality of electromagnetic noises and the communication frequency band of the host device. The communication band; the slave device switches the current communication band to the target slave communication band.
  • the host device 51 can be used to acquire multiple electromagnetic noises of the device, and the target noise frequency band corresponding to the lowest noise value is determined according to the multiple electromagnetic noises, and then the communication module is controlled by the main chip 55 to the current communication frequency band. Adjust to the target noise frequency band.
  • the slave device can also maintain the same communication frequency band as the host device, and monitor the noise value in time, so that when the noise changes, the frequency band can be switched in time, thereby ensuring the lowest air conditioning system.
  • the state of electromagnetic noise is transmitted to the outside to ensure the smooth communication.
  • the communication monitoring function in the host device and the slave device can be used to monitor the electromagnetic noise of the system bus, so that when the noise is large, the communication band is switched to the lowest noise communication band for communication.
  • the air conditioning apparatus may include at least: a communication module 61, a noise monitoring module 63, and a main chip 65, wherein the communication module 61 is used in multiple Receiving and/or transmitting communication information in the frequency band, the noise monitoring module 63 is configured to acquire a plurality of electromagnetic noises to the device bus, including: the main chip receives the plurality of electromagnetic noises acquired by the noise monitoring module; and the main chip 65 is based on the plurality of electromagnetic noises The target noise frequency band is determined; the main chip modulates the current communication frequency band of the communication module to the target noise frequency band.
  • the noise monitoring module 63 can be used to monitor a plurality of electromagnetic noises of the device bus in the air conditioner, and calculate electromagnetic noise values corresponding to the electromagnetic noise, and then each electromagnetic noise can be determined by the main chip 65.
  • the electromagnetic frequency band corresponding to the value obtains the target noise frequency band with the lowest noise value, and then the main chip 65 can modulate the communication module 61 to adjust the communication frequency band to the target noise frequency band.
  • the noise monitoring module can be used to scan the electromagnetic noise of the monitoring system bus, and the scanned noise value and the frequency band corresponding to the noise value are sent to the main chip, and the main chip is used to determine whether the modulation frequency band needs to be modulated.
  • the noise monitoring module can also identify the signal sent by the communication module and maintain communication with the communication module, thereby rapidly modulating the communication frequency band and improving the communication effect.
  • the disclosed technical contents may be implemented in other manners.
  • the device embodiments described above are only schematic.
  • the division of the unit may be a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, unit or module, and may be electrical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place or may be distributed to a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like. .
  • the solution provided by the embodiment of the present application can be used to switch the communication frequency band to the target noise frequency band.
  • the method can be applied to the air conditioning system, and the host device is used to obtain multiple electromagnetic noises of the device bus. Then, according to a plurality of electromagnetic noises, the target noise frequency band can be determined, and the target noise frequency band can be the lowest communication frequency band of the electromagnetic noise, so that the current communication frequency band can be dynamically switched to the target noise frequency band, so as to avoid the high peak of the bus electromagnetic noise.
  • the communication frequency band reduces the electromagnetic noise interference, thereby ensuring that the system communicates with the communication frequency band with the least interference, ensuring the smooth communication, and further solving the technical problem that the power line carrier communication efficiency is low when the air conditioning system is running.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

L'invention concerne un procédé de commutation de la bande de fréquence de communication d'un système de climatisation, un système de climatisation, un dispositif de climatisation, un support d'informations et un processeur, le système de climatisation comprenant au moins un dispositif maître (51) et un dispositif esclave (53) ; le procédé comprenant les étapes suivantes : le dispositif maître (51) acquiert une pluralité de bruits électromagnétiques d'un bus (S102) ; le dispositif maître (51) détermine une bande de fréquence de bruit cible en fonction de la pluralité de bruits électromagnétiques (S104) ; le dispositif maître (51) commute la bande de fréquence de communication actuelle vers la bande de fréquence cible (S106).
PCT/CN2018/120649 2018-03-02 2018-12-12 Procédé de commutation de bande de fréquence de communication de système de climatisation, système de climatisation et dispositif de climatisation WO2019165821A1 (fr)

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CN201810176207.2A CN108548268A (zh) 2018-03-02 2018-03-02 空调系统的通讯频段切换方法、空调系统和空调设备
CN201810176207.2 2018-03-02

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CN108548268A (zh) * 2018-03-02 2018-09-18 珠海格力电器股份有限公司 空调系统的通讯频段切换方法、空调系统和空调设备
CN113483462B (zh) * 2021-04-30 2022-12-16 佛山市顺德区美的电子科技有限公司 空调器及其基于电力线通讯的数据传输方法和存储介质

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JPH05196286A (ja) * 1992-01-22 1993-08-06 Matsushita Electric Ind Co Ltd 空気調和機の電磁ノイズ抑制装置
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JP2010101522A (ja) * 2008-10-21 2010-05-06 Hitachi Appliances Inc 空気調和機
CN104244685A (zh) * 2013-06-21 2014-12-24 中兴通讯股份有限公司 一种降低电磁干扰的方法和装置
CN108548268A (zh) * 2018-03-02 2018-09-18 珠海格力电器股份有限公司 空调系统的通讯频段切换方法、空调系统和空调设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04198651A (ja) * 1990-11-28 1992-07-20 Matsushita Seiko Co Ltd 空気調和機
JPH05196286A (ja) * 1992-01-22 1993-08-06 Matsushita Electric Ind Co Ltd 空気調和機の電磁ノイズ抑制装置
CN101373991A (zh) * 2007-08-21 2009-02-25 黄礼丰 电力线家庭通信网络系统
JP2010101522A (ja) * 2008-10-21 2010-05-06 Hitachi Appliances Inc 空気調和機
CN104244685A (zh) * 2013-06-21 2014-12-24 中兴通讯股份有限公司 一种降低电磁干扰的方法和装置
CN108548268A (zh) * 2018-03-02 2018-09-18 珠海格力电器股份有限公司 空调系统的通讯频段切换方法、空调系统和空调设备

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