WO2021047339A1 - 基于单线半双工通信的空调通信方法和空调器 - Google Patents

基于单线半双工通信的空调通信方法和空调器 Download PDF

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Publication number
WO2021047339A1
WO2021047339A1 PCT/CN2020/108427 CN2020108427W WO2021047339A1 WO 2021047339 A1 WO2021047339 A1 WO 2021047339A1 CN 2020108427 W CN2020108427 W CN 2020108427W WO 2021047339 A1 WO2021047339 A1 WO 2021047339A1
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Prior art keywords
slave
communication
air conditioner
data
host
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PCT/CN2020/108427
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English (en)
French (fr)
Inventor
管西忠
程绍江
时斌
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青岛海尔空调电子有限公司
海尔智家股份有限公司
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Publication of WO2021047339A1 publication Critical patent/WO2021047339A1/zh

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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • F24F11/58—Remote control using Internet communication
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • 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

Definitions

  • the invention relates to an air conditioner communication technology, in particular to an air conditioner communication method and an air conditioner based on single-line half-duplex communication.
  • Single-line half-duplex communication namely Single-line Half-duplex Communication
  • Single-wire half-duplex Communication means that information can be transmitted from A to B or from B to A at any time during the communication process, but there can only be transmission in one direction at the same time.
  • the transmitter and receiver at each end of the communication system are switched to the communication line through the transceiver switch to switch the direction, and the transceiver switch is controlled by software. Because of the low cost and low requirements for the control chip, single-wire half-duplex communication is widely used in the field of air conditioning.
  • the first aspect of the present invention provides a communication based on single-wire half-duplex
  • the air conditioner communication method the air conditioner comprises a master and a slave communicating in a master-slave mode in a single-wire half-duplex manner, characterized in that the air conditioner communication method includes the following steps: the master sends data to the slave ; While sending data, the host continuously monitors the status of the communication line; if the emergency communication pilot code sent by the slave is detected, the host switches to the data receiving state in order to receive the emergency communication sent by the slave Data; After receiving the emergency communication data sent by the slave, the host returns to the data sending state.
  • the step of "sending data from the host to the slave” specifically includes: the host sends the first normal communication guide code to the slave before sending it to the The slave sends data.
  • the air-conditioning communication method further includes: if the emergency communication guide code is not detected before the host computer finishes sending data, the slave computer starts sending to the host computer. data.
  • the step of "the slave device starts to send data to the host computer” specifically includes: the slave device sends the second normal communication pilot code to the host computer before sending data to the host computer.
  • the host sends data.
  • the master and the slave are both indoor units of the air conditioner.
  • the master and the slave are both outdoor units of the air conditioner.
  • the emergency communication guide code is a low level formed by the slave machine pulling the communication line down for a certain number of milliseconds.
  • the emergency communication guide code is a high and low level combination formed by the slave on the communication line.
  • the second aspect of the present invention also provides an air conditioner communication method based on single-line half-duplex communication.
  • the air conditioner includes a master and a slave that communicate in a master-slave mode in a single-line half-duplex manner, wherein the The air conditioner communication method includes the following steps: the host sends a first normal communication pilot code to the slave; after sending the first normal communication pilot code, the host sends data to the slave; while sending data, The host continuously monitors the state of the communication line; if the emergency communication pilot code sent by the slave is detected, the host switches to the data receiving state to receive the emergency communication data sent by the slave; after receiving the emergency communication data After the emergency communication data sent by the slave, the host returns to the data sending state; if the emergency communication pilot code is not detected before the host sends the data, the slave sends a second normal communication to the host Pilot code; after sending the second normal communication pilot code, the slave starts to send data to the host.
  • a third aspect of the present invention provides an air conditioner including a controller configured to be able to execute the air conditioner communication method according to any one of the above technical solutions.
  • the present invention improves the master-slave communication method of the existing air conditioner.
  • the slave can send the emergency communication guide code to guide the host to receive important information without waiting for the host. Sending is complete.
  • the host keeps monitoring the status of the communication line during the entire communication cycle. If the emergency communication pilot code sent by the slave is monitored, no matter if the host is currently in the data receiving state or the sending state, All will be converted to the receiving state, so that important information from the slave can be sent to the master at the first time, avoiding errors caused by information delays, and ensuring the safe and stable operation of the air conditioner to the greatest extent.
  • Figure 1 is a circuit diagram of the master-slave communication mode of the air conditioner
  • Fig. 2 is a flowchart of a multi-line air conditioner communication method based on single-line half-duplex communication according to a preferred embodiment of the present invention.
  • Any type of air conditioning equipment including, but not limited to, between multi-connected outdoor units, between multi-connected outdoor units and indoor units, between outdoor units or indoor units of unit units, and between outdoor units and indoor units of unit units ,and many more. This adjustment does not deviate from the basic principle of the present invention, and therefore will also fall within the protection scope of the present invention.
  • the multi-line air conditioner may include one outdoor unit and multiple indoor units, and the multiple indoor units One of them is the master, and the others are slaves.
  • the difference in communication content between the master and the slave is mainly reflected in the master usually inquires and the slave responds.
  • Other differences include, but are not limited to, the master has the authority to control the slave, and has a working mode that the slave does not have. These They are all known in the prior art and are not directly related to the technical solution of the present invention, so they will not be repeated here.
  • What is directly related to the present invention is that in single-wire half-duplex communication, the master usually sends and receives data in one direction with multiple slaves at the same time or separately.
  • FIG. 1 shows the communication circuit diagram of a master and a slave in the air conditioner master-slave communication mode.
  • the left master wants to send data to the right slave, it will first send a pilot code. For example, first set the transmit pin Tx to 1, and pull the communication line low for a certain millisecond time.
  • the pilot code X the slave on the right detects the pilot code X and starts to receive the data sent by the master on the left; after the reception is completed, the slave sets its sending pin Tx to 1, and pulls the communication line down for another millisecond as the pilot code Y, the master on the left starts to receive the response data from the slave on the right after detecting the pilot code Y.
  • Figure 2 is a combination of a master and a slave to describe the method of the present invention, but, as mentioned above, the master of the multi-line air conditioner in this preferred embodiment can communicate with multiple slaves simultaneously or separately Regardless of simultaneous communication or separate communication in sequence, as far as the communication between the master and each slave is concerned, the operation steps are the same as those described in conjunction with Figure 2 below.
  • the multi-line air conditioner communication method based on single-line half-duplex communication of the present invention includes the following steps: S101, the host sends a first normal communication pilot code to the slave; S102, after sending the first normal communication pilot code , The master sends data to the slave; S103, while sending data to the slave, the master continuously monitors the status of the communication line; S104, if the emergency communication pilot code sent by the slave is detected, the master switches to the data receiving state for receiving Emergency communication data sent by the slave; S105, after receiving the emergency communication data sent by the slave, the host returns to the data sending state. At this time, the host can resend the previous data or continue to send the remaining data according to the interruption progress.
  • the former method is generally adopted in practice, which is to resend the data; S106, if the emergency communication pilot code is not detected before the master sends the data, the slave sends the second normal communication pilot code to the master; S107, After sending the second normal communication pilot code to the host, the slave starts to send data to the host.
  • the emergency communication pilot code may be a low level formed by the slave pulling the communication line down for a certain number of milliseconds.
  • the emergency communication pilot code may also be a high and low level combination formed by the slave on the communication line.
  • the emergency communication pilot code is described as a low level or a combination of high and low levels, this is only an example and should not constitute any limitation to the protection of the present invention. Without departing from the principle of the present invention, those skilled in the art can set the emergency communication pilot code to any appropriate form as needed, as long as the host can accurately identify the pilot code during data transmission and does not It can be confused with the first normal communication pilot code and the second normal communication pilot code.
  • first normal communication pilot code and the second normal communication pilot code can also be set into any appropriate form by those skilled in the art as required, as long as they are not confused with the emergency communication pilot code.
  • step S101 may be omitted, and the host directly sends data to the slave, while continuously monitoring the state of the communication line, and performing subsequent operations according to whether the emergency communication guide code is detected.
  • step S106 can be omitted. If the emergency communication pilot code is not detected before the master sends the data, the slave directly sends the data to the master.
  • the above steps S101 and S106 are omitted, and the host directly sends data to the slave, while continuously monitoring the state of the communication line, and performing subsequent operations according to whether the emergency communication guide code is detected. If the emergency communication guide code is not detected before the master sends the data, the slave sends the data directly to the master.
  • the present invention also provides an air conditioner, in particular a multi-line air conditioner.
  • the multi-line air conditioner includes a controller configured to perform any of the foregoing.
  • the controller may be the master controller of the multi-line air conditioner, or may be a sub-controller of the master and/or slave.
  • controller is the master controller of the multi-line air conditioner
  • all the steps in the above method embodiments are executed by the master controller; when the controller is the host and/ Or in the case of the sub-controller of the slave, the steps in the above method embodiment with the master or the slave as the execution subject are executed by the sub-controller of the master and/or the slave accordingly.
  • This physical separation or combination does not change the basic principle of the present invention, and therefore will fall within the protection scope of the present invention.

Abstract

本发明涉及空调通信技术，具体涉及一种基于单线半双工通信的空调通信方法，旨在解决现有的主从式空调通信方法无法保证从机的重要信息被及时发送给主机的问题。为此目的，本发明的空调通信方法包括：主机向从机发送数据；在发送数据的同时，主机持续监测通信线的状态；如果检测到从机发送的紧急通信引导码，则主机切换为数据接收状态以便接收从机发送的紧急通信数据；在接收完从机发送的紧急通信数据之后，主机返回数据发送状态。根据本发明的方法，在主机发送数据期间从机可通过发送紧急通信引导码的方式来引导主机接收重要信息，而不必等主机数据发送完成，使得从机的重要信息能第一时间发送给主机。

Description

基于单线半双工通信的空调通信方法和空调器 技术领域
本发明涉及空调通信技术，具体涉及一种基于单线半双工通信的空调通信方法和空调器。
背景技术
单线半双工通信，即Single line Half duplex Communication，是指在通信过程的任意时刻信息既可由A传到B，又能由B传到A，但同一时间只能有一个方向上的传输存在。采用单线半双工方式通信时，通信系统每一端的发送器和接收器都通过收发开关转接到通信线上，进行方向的切换，而收发开关由软件控制。因为成本低，对控制芯片要求也低，单线半双工通信在空调领域得到广泛应用。
然而，在现有空调的主从通信模式下，在主机给从机发送数据的过程中，如果从机有重要信息需要反馈给主机，就需要等主机发送完数据，这会产生时间延迟，导致从机的重要信息无法第一时间反馈给主机。
相应地，本领域需要一种新的多联机空调通信方法来解决上述问题。
发明内容
为了解决现有技术中的上述问题，即为了解决现有的空调通信方法无法保证从机的重要信息被及时发送给主机的问题，本发明的第一方面提供了一种基于单线半双工通信的空调通信方法，所述空调包括以单线半双工方式按照主从模式进行通信的主机和从机，其特征在于，所述空调通信方法包括下列步骤：所述主机向所述从机发送数据；在发送数据的同时，所述主机持续监测通信线的状态；如果检测到所述从机发送的紧急通信引导码，则所述主机切换为数据接收状态以便接收所述从机发送的紧急通信数据；在接收完所述从机发送的紧急通信数据之后，所述主机返回数据发送状态。
在上述空调通信方法的优选实施方式中，“所述主机向所述从机发送数据”的步骤具体包括：所述主机在向所述从机发送第一正常通信引导码之后，才向所述从机发送数据。
在上述空调通信方法的优选实施方式中，所述空调通信方法还包括：如果在所述主机发送完数据之前都没有检测到所述紧急通信引导码，则所述从机开始向所述主机发送数据。
在上述空调通信方法的优选实施方式中，“所述从机开始向所述主机发送数据”的步骤具体包括：所述从机在向所述主机发送第二正常通信引导码之后，才向所述主机发送数据。
在上述空调通信方法的优选实施方式中，所述主机和所述从机均为所述空调的室内机。
在上述空调通信方法的优选实施方式中，所述主机和所述从机均为所述空调的室外机。
在上述空调通信方法的优选实施方式中，所述紧急通信引导码为所述从机将通信线拉低一定毫秒数而形成的低电平。
在上述空调通信方法的优选实施方式中，所述紧急通信引导码为所述从机在所述通信线上形成的高低电平组合。
本发明的第二方面也提供了一种基于单线半双工通信的空调通信方法，所述空调包括以单线半双工方式按照主从模式进行通信的主机和从机，其特征在于，所述空调通信方法包括下列步骤：所述主机向所述从机发送第一正常通信引导码；在发送第一正常通信引导码之后，所述主机向所述从机发送数据；在发送数据的同时，所述主机持续监测通信线的状态；如果检测到所述从机发送的紧急通信引导码，则所述主机切换为数据接收状态以便接收所述从机发送的紧急通信数据；在接收完所述从机发送的紧急通信数据之后，所述主机返回数据发送状态；如果在所述主机发送完数据之前没有检测到所述紧急通信引导码，则所述从机向所述主机发送第二正常通信引导码；在发送第二正常通信引导码之后，所述从机开始向所述主机发送数据。
本发明的第三方面提供了一种空调器，该空调器包括控制器，所述控制器被配置为能够执行上述技术方案中任一项所述的空调通信方法。
本领域技术人员能够理解的是，本发明对现有空调的主从通信方式进行改进，主机发送数据期间，从机可通过发送紧急通信引导码的方式来引导主机接收重要信息，而不必等主机发送完成。换句话说，根据本发明的技术方案，在整个通信周期中主机都一直保持监测通信线的状态，如果监测到从机发送的紧急通信引导码，则无论主机当前是数据接收状态还是发送状态，都会转为接收状态，使得从机的重要信息能第一时间发送给主机，避免信息延误导致的错误，最大程度地保证空调器的安全平稳运行。
附图说明
下面结合附图来描述本发明的优选实施方式，附图中：
图1是空调器主从通信模式的电路图；
图2是根据本发明的优选实施方式的基于单线半双工通信的多联机空调通信方法的流程图。
具体实施方式
下面参照附图并结合多联机空调的室内机来描述本发明的优选实施方式。本领域技术人员应当理解的是，这些实施方式仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。例如，尽管本申请是结合多联机空调的室内机来描述的，但是，这并不是限制性的，本发明的技术方案显然也可以用于以单线半双工方式按照主从模式进行通信的其他任何类型的空调设备，包括但不限于多联机的室外机之间、多联机的室外机与室内机之间、单元机的室外机或室内机之间以及单元机的室外机与室内机之间，等等。这种调整并不偏离本发明的基本原理，因此也将落入本发明的保护范围之内。
具体地，尽管图中没有显示，但是本领域技术人员能够理解的是，作为本发明的优选实施例的应用对象，多联机空调可包括一个室外机和多个室内机，所述多个室内机中的一个为主机，其余多个为从机。主机与从机在通讯内容上的区别主要体现在主机通常进行询问，从机进行应答，其他区别包括但不限于，主机具有对从机进行控制的权限、具有从机没有的工作模式等，这些都是现有技术中已知的，并且与本发明 的技术方案没有直接关系，因此这里不再赘述。与本发明直接相关的是，在单线半双工通信中，主机通常同时或分别与多个从机进行数据的单向发送和接收。
下面参阅图1，该图显示的是空调主从通信模式中一个主机与一个从机的通信电路图。如图1所示，在单线半双工通信中，左侧主机要给右侧从机发送数据时会先发送一个引导码，例如先将发送脚Tx置1，将通讯线拉低一定毫秒时间作为引导码X，右侧从机检测到引导码X后开始接收左侧主机发送的数据；接收完成后，从机将其发送脚Tx置1，将通讯线拉低另一毫秒时间作为引导码Y，左侧主机在检测到引导码Y后开始接收右侧从机的应答数据。如背景技术中所述，在左侧主机给右侧从机发送数据的过程中，如果右侧从机有重要信息需要反馈给左侧主机，就需要等左侧主机发送完数据，但这会产生一定的时间延迟，导致右侧从机的重要信息无法第一时间发送给左侧主机。
下面参阅图2来详细描述根据本发明的基于单线半双工通信的多联机空调通信方法的流程步骤。需要说明的是，图2是结合一个主机和一个从机的情形描述本发明的方法，但是，如上所述，该优选实施例中的多联机空调的主机可以与多个从机同时或分别通信，无论是同时通信，还是按顺序分别通信，就主机与每一个从机的通信而言，其操作步骤与下面结合图2描述的内容是一致的。
如图2所示，本发明的基于单线半双工通信的多联机空调通信方法包括下列步骤：S101，主机向从机发送第一正常通信引导码；S102，在发送第一正常通信引导码之后，主机向从机发送数据；S103，在向从机发送数据的同时，主机持续监测通信线的状态；S104，如果检测到从机发送的紧急通信引导码，则主机切换为数据接收状态以便接收从机发送的紧急通信数据；S105，在接收完从机发送的紧急通信数据之后，主机返回数据发送状态，此时，主机可以重新发送之前的数据，也可以根据中断进度继续发送剩余的数据，为了简化操作实践中一般采取前一种方式，即重新发送数据；S106，如果在主机发送完数据之前都没有检测到紧急通信引导码，则从机向主机发送第二正常通信引导码；S107，向主机发送第二正常通信引导码之后，从机开始向主机发送数据。
作为示例，所述紧急通信引导码可以是从机将通信线拉低一定毫秒数而形成的低电平。替代性地，所述紧急通信引导码也可以是从机在通信线上形成的高低电平组合。关于这点，需要指出的是，尽管这里将紧急通信引导码描述成低电平或高低电平组合，但是，这仅仅是示例性的，不应对本发明的保护构成任何限制。在不偏离本发明的原理的前提下，本领域技术人员可以根据需要将所述紧急通信引导码设置成任何适当的形式，只要主机在发送数据的过程中能够准确识别出该引导码并且不会与第一正常通信引导码和第二正常通信引导码混淆即可。
同理，第一正常通信引导码和第二正常通信引导码也可以由本领域技术人员可以根据需要设置成任何适当的形式，只要不会与所述紧急通信引导码混淆即可。
在一个替代实施方式中，上述步骤S101可以省略，主机直接向从机发送数据，与此同时持续监测通信线的状态，并根据是否检测到紧急通信引导码来执行后续操作。
在另一个替代实施方式中，上述步骤S106可以省略，如果在主机发送完数据之前没有检测到紧急通信引导码，则从机直接向主机发送数据。
在又一个替代实施方式中，上述步骤S101和S106都被省略，主机直接向从机发送数据，与此同时持续监测通信线的状态，并根据是否检测到紧急通信引导码来执行后续操作。如果在主机发送完数据之前没有检测到紧急通信引导码，则从机直接向主机发送数据。
此外，基于与上述方法实施例相同的技术构思，本发明还提供了一种空调器，特别是一种多联机空调，该多联机空调包括控制器，所述控制器被配置为能够执行上述任一方法实施例的通信方法。具体而言，在实践中所述控制器可以是所述多联机空调的总控制器，也可以是所述主机和/或从机的子控制器。更具体地，当所述控制器是所述多联机空调的总控制器时，上述方法实施例中的所有步骤都由所述总控制器统一执行；当所述控制器是所述主机和/或从机的子控制器时，上述方法实施例中以主机或从机为执行主体的步骤相应地由所述主机和/或从机的子控制器来执行。这种物理形式上的拆分或组合并没有改变本发明的基本原理，因此也将落入本发明的保护范围之内。
另外，需要说明的是，在本发明的描述中，术语“第一”、“第二”仅仅是为了便于描述，而不是指示或暗示所述参数的相对重要性，因此不能理解为对本发明的限制。
再者，上述实施例中虽然将各个步骤按照特定的先后次序进行了描述，但是本领域技术人员可以理解，为了实现本发明的效果，不同的步骤之间并非必须按照这样的次序执行，其执行时间和先后顺序可以根据需要任意调整，这些变化都在本发明的保护范围之内。例如，尽管本申请中描述的是主机先给从机发送数据，但是这并不是限制性的，在实践中以某个时间点为起点完全有可能是从机先给主机发送数据，只要在主机给从机发送数据的过程中持续通信线上是否出现紧急通信引导码并根据检测情况相应地切换收发状态，该方案就将落入本发明的保护范围之内。
最后，本领域技术人员能够意识到，本申请中公开的实施例描述的各示例的方法步骤能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明电子硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以电子硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征做出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。

Claims (10)

  1. 一种基于单线半双工通信的空调通信方法，所述空调包括以单线半双工方式按照主从模式进行通信的主机和从机，
    其特征在于，所述空调通信方法包括下列步骤：
    所述主机向所述从机发送数据；
    在发送数据的同时，所述主机持续监测通信线的状态；
    如果检测到所述从机发送的紧急通信引导码，则所述主机切换为数据接收状态以便接收所述从机发送的紧急通信数据；
    在接收完所述从机发送的紧急通信数据之后，所述主机返回数据发送状态。
  2. 根据权利要求1所述的空调通信方法，其特征在于，“所述主机向所述从机发送数据”的步骤具体包括：
    所述主机在向所述从机发送第一正常通信引导码之后，才向所述从机发送数据。
  3. 根据权利要求1所述的空调通信方法，其特征在于，所述空调通信方法还包括：
    如果在所述主机发送完数据之前都没有检测到所述紧急通信引导码，则所述从机开始向所述主机发送数据。
  4. 根据权利要求3所述的空调通信方法，其特征在于，“所述从机开始向所述主机发送数据”的步骤具体包括：
    所述从机在向所述主机发送第二正常通信引导码之后，才向所述主机发送数据。
  5. 根据权利要求1至4中任一项所述的空调通信方法，其特征在于，所述主机和所述从机均为所述空调的室内机。
  6. 根据权利要求1至4中任一项所述的空调通信方法，其特征在于， 所述主机和所述从机均为所述空调的室外机。
  7. 根据权利要求1至4中任一项所述的空调通信方法，其特征在于，所述紧急通信引导码为所述从机将通信线拉低一定毫秒数而形成的低电平。
  8. 根据权利要求1至4中任一项所述的空调通信方法，其特征在于，所述紧急通信引导码为所述从机在所述通信线上形成的高低电平组合。
  9. 一种基于单线半双工通信的空调通信方法，所述空调包括以单线半双工方式按照主从模式进行通信的主机和从机，
    其特征在于，所述空调通信方法包括下列步骤：
    所述主机向所述从机发送第一正常通信引导码；
    在发送第一正常通信引导码之后，所述主机向所述从机发送数据；
    在发送数据的同时，所述主机持续监测通信线的状态；
    如果检测到所述从机发送的紧急通信引导码，则所述主机切换为数据接收状态以便接收所述从机发送的紧急通信数据；
    在接收完所述从机发送的紧急通信数据之后，所述主机返回数据发送状态；
    如果在所述主机发送完数据之前没有检测到所述紧急通信引导码，则所述从机向所述主机发送第二正常通信引导码；
    在发送第二正常通信引导码之后，所述从机开始向所述主机发送数据。
  10. 一种空调器，包括控制器，其特征在于，所述控制器被配置为能够执行权利要求1至9中任一项所述的空调通信方法。
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