WO2019205754A1 - 中继设备及多联式控制系统 - Google Patents

中继设备及多联式控制系统 Download PDF

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Publication number
WO2019205754A1
WO2019205754A1 PCT/CN2019/072552 CN2019072552W WO2019205754A1 WO 2019205754 A1 WO2019205754 A1 WO 2019205754A1 CN 2019072552 W CN2019072552 W CN 2019072552W WO 2019205754 A1 WO2019205754 A1 WO 2019205754A1
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WIPO (PCT)
Prior art keywords
node device
response signal
control
destination node
control device
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PCT/CN2019/072552
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English (en)
French (fr)
Inventor
国德防
袁本海
张锐钢
时斌
禚百田
程绍江
王军
Original Assignee
青岛海尔空调电子有限公司
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Application filed by 青岛海尔空调电子有限公司 filed Critical 青岛海尔空调电子有限公司
Priority to EP19793888.9A priority Critical patent/EP3787203A4/en
Priority to US17/047,894 priority patent/US11552818B2/en
Publication of WO2019205754A1 publication Critical patent/WO2019205754A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40019—Details regarding a bus master
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15507—Relay station based processing for cell extension or control of coverage area
    • 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
    • F24F11/62—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15542—Selecting at relay station its transmit and receive resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40032—Details regarding a bus interface enhancer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40169—Flexible bus arrangements
    • H04L12/40176—Flexible bus arrangements involving redundancy
    • H04L12/40182—Flexible bus arrangements involving redundancy by using a plurality of communication lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations

Definitions

  • the invention relates to the technical field of communication control of a multi-connected air conditioning system, in particular to a relay device and a multi-connected control system.
  • Each outdoor unit in the multi-connected air conditioning system can communicate with multiple indoor units, for example, each outdoor unit communicates with 64 indoor units.
  • the outdoor unit communicates with the indoor unit by using a master-slave communication method, and the outdoor unit acts as a host to send the query command to some or all of the indoor units, and the indoor unit can only feedback the response information to the outdoor unit according to the query command, and the indoor Machines cannot communicate with each other.
  • the master-slave communication method although one outdoor unit can control multiple indoor units, the number of indoor units is often limited by the length of the communication bus (the longer the communication bus is, the greater the attenuation of the transmitted signals, so the length of the communication bus Has an upper limit).
  • the length of the communication bus Has an upper limit
  • the invention patent application with the publication No. CN104896658A discloses a communication method of an air conditioning system, which can realize communication between other indoor units and the outdoor unit by using one indoor unit as a relay, and further Solved the problem of communication distance.
  • the relay indoor unit simultaneously transmits data of the local machine and other indoor units, it is easy to cause network transmission congestion and even cause transmission failure, and thus the stability is poor.
  • the present invention provides a relay device and a multi-connected control system.
  • the relay device of the present invention includes a communication module configured to communicate with a preset source node device and a preset destination node device, respectively, based on a master-slave communication manner.
  • the communication module includes:
  • a first communication unit configured to receive, by the master-slave communication mode, a first control signal sent by the source node device, and send a first response signal that is fed back by the destination node device corresponding to the first control signal To the source node device;
  • a second communication unit configured to send the first control signal to the corresponding destination node device by using the master-slave communication mode, and receive the feedback that the destination node device feeds back according to the first control signal A response signal.
  • the communication module is further configured to communicate with a specific destination node device; wherein the specific destination node device is a destination node device that is directly in communication with the source node device;
  • the first communication unit is further configured to receive a second control signal sent by the specific destination node device, and send a second response signal fed back by the destination node device corresponding to the second control signal to The specific destination node device;
  • the second communication unit is further configured to send the second control signal to its corresponding destination node device, and receive a second response signal that is forwarded by the destination node device according to the second control signal.
  • the first communication unit is further configured to send a first response signal fed back by the destination node device to the source node device or send a second response signal fed back by the destination node device to the device according to a signal contention sending method. Describe the specific destination node device.
  • the signal contention sending method includes:
  • the target response signal is a first response signal when the target node device is a source node device, and the target response signal is a second response signal when the target node device is a specific destination node device.
  • the relay device further includes a verification module configured to verify whether the first control signal, the second control signal, the first response signal, or the second response signal is correct;
  • the first communication unit is further configured to send the first response signal to the source node device after the first response signal is verified correctly or after the second response signal is verified correctly. Sent to the specific destination node device;
  • the second communication unit is further configured to send the first control signal or the second control signal to the corresponding destination node device after the verification is correct.
  • the relay device further includes a cache module configured to buffer the first response signal and the second response signal received by the second communication unit.
  • a multi-connected control system of the present invention includes a main control device, a relay device, and a plurality of slave control devices;
  • the relay device includes a first communication unit and a second communication unit;
  • the main control device is in communication with a portion of the slave control device and the first communication unit; the second communication unit is communicatively coupled to another portion of the slave control device;
  • the first communication unit is configured to receive a first control signal sent by the main control device, and send a first response signal that is fed back from the control device corresponding to the first control signal to the main control device;
  • the second communication unit is configured to send the first control signal to its corresponding slave control device, and receive a first response signal that the corresponding slave control device feeds back according to the first control signal.
  • the number of the relay devices is multiple, and the plurality of the relay devices are cascaded with each other to form a cascade path; the first relay device in the cascade path is directly in communication connection with the main control device, And each of the relay devices is in communication connection with a part of the slave control device;
  • the cascade path is configured to transmit the first control signal sent by the main control device or the second control signal sent from the control device to the corresponding slave control device step by step, and according to the corresponding slave device Transmitting, by the first control signal, the first response signal to the main control device or the second response signal fed back by the corresponding control device according to the second control signal to the specific From the control device;
  • the specific slave control device is a slave control device that is directly in communication connection with the master control device or a certain relay device.
  • the specific slave control device is configured to contend for the first control signal to the primary control device or to contend for the second response signal to the corresponding relay device.
  • the relay device can communicate with the preset source node device and the preset destination node device respectively based on the master-slave communication mode.
  • the first communication unit communicates with the source node device in a master-slave communication manner (that is, the relay device functions as a slave device of the source node device), so that the relay device can receive the control signal sent by the source node device and provide feedback thereto. Answer signal.
  • the second communication unit communicates with the destination node device through the master-slave communication mode (that is, the relay device serves as the master device of the destination node device), so that the relay device can send a control signal to the destination node device and receive the response signal fed back by the destination node device. .
  • the relay device can also communicate with a specific destination node device (ie, a destination node device that is directly connected to the source node device), so that the relay device can be connected to other slave devices of the source node device without using the source node device. Direct communication.
  • a specific destination node device ie, a destination node device that is directly connected to the source node device
  • the relay device may send the first response signal fed back by the destination node device to the source node device or the second response signal fed back by the destination node device to the specific destination node device. That is to say, the relay device can simulate a contention process in which the destination node device competes for the transmission of the response signal.
  • the multi-connected control system can expand the communication distance by using a cascade path formed by a plurality of relay devices.
  • the cascading path may be a first control signal sent by the main control device or a second control signal sent from the control device (ie, the slave control device directly connected to the main control device or a certain relay device). Transmitting to the corresponding slave control device, and transmitting the corresponding first response signal fed back from the control device according to the first control signal to the master control device or the second response fed back by the corresponding slave control device according to the second control signal The signal is transmitted step by step to a specific slave control device.
  • FIG. 1 is a schematic diagram showing the main structure of a relay device according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram showing the main structure of a multi-connected control system according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram showing the main structure of another multi-connected control system in the embodiment of the present invention.
  • Figure 1 exemplarily shows the main structure of a relay device in this embodiment.
  • the relay device in this embodiment may include a verification module 11 , a communication module 12 , and a cache module 13 .
  • the communication module 12 in this embodiment may include a first communication unit and a second communication unit, and the communication module 12 may be configured to be based on a master-slave communication manner, respectively, with a preset source node device and a preset destination node. Device communication.
  • the first communication unit may be configured to receive the first control signal sent by the source node device by using the master-slave communication mode, and send the first response signal fed back by the destination node device corresponding to the first control signal to the source node device.
  • the second communication unit may be configured to send the first control signal to the corresponding destination node device by means of the master-slave communication mode, and receive the first response signal fed back by the destination node device according to the first control signal.
  • the communication data (such as the first control signal or the first response signal) of the relay device is mainly composed of a boot code, a length code, an address code, a command code, a data body, and a check code.
  • the boot code refers to a boot header for synchronizing data of each frame
  • the length code represents a total length of one frame of data
  • the command code represents command information contained in the communication data (eg, a control command of the source node device to the destination node device or The destination node device responds to the source node device.
  • the address code refers to the address number of the source node device or the destination node device.
  • the data body refers to various data information in the communication data
  • the check code refers to the communication data. Check mark.
  • the verification module 11 can be configured to verify whether the first control signal and the first response signal are correct.
  • the first communication unit is further configured to transmit the first acknowledgement signal to the source node device after it has been verified correctly.
  • the second communication unit is further configured to transmit the first control signal to the corresponding destination node device after it has been verified correctly.
  • the cache module 13 can be configured to buffer the first response signal received by the second communication unit.
  • the first communication unit communicates with the source node device through the master-slave communication mode (that is, the relay device serves as the slave device of the source node device), so that the relay device can receive the control signal sent by the source node device and The response signal is fed back to it.
  • the second communication unit communicates with the destination node device through the master-slave communication mode (that is, the relay device serves as the master device of the destination node device), so that the relay device can send a control signal to the destination node device and receive the response signal fed back by the destination node device. .
  • the communication module 12 of the relay device shown in FIG. 1 in this embodiment may also be configured to communicate with a specific destination node device.
  • the specific destination node device refers to a destination node device that is directly connected to the source node device.
  • the first communications unit may be configured to receive the second control signal sent by the specific destination node device, and send the second response signal fed back by the destination node device corresponding to the second control signal to the specific destination node device.
  • the second communication unit may be configured to send the second control signal to the destination node device corresponding thereto, and receive the second response signal fed back by the destination node device according to the second control signal.
  • the verification module 11 can also be configured to verify whether the second control signal and the second response signal are correct.
  • the first communication unit is further configured to transmit the second acknowledgement signal to the particular destination node device after it has been verified correctly.
  • the second communication unit is further configured to transmit the second control signal to the corresponding destination node device after the second control signal is verified correctly.
  • the cache module 13 can also be configured to buffer the second response signal received by the second communication unit.
  • the first communication unit when the first communication unit communicates with the source node device through the master-slave communication mode (that is, the relay device acts as a slave device of the source node device), the first communication unit can also communicate with the specific destination node device, so that the relay device Direct communication with other slave devices of the source node device is possible without the need for a source node device.
  • the first communication unit may be further configured to: send the first response signal fed back by the destination node device to the source node device or send the second response signal fed back by the destination node device to the signal contention sending method to A specific destination node device.
  • the signal contention sending method may include the following steps:
  • Step S101 Send all target response signals to the target node device simultaneously in the preset contention time slot. Specifically, when the target node device is the source node device, the target response signal is the first response signal. When the target node device is a specific destination node device, the target response signal is a second response signal.
  • Step S102 detecting data transmitted in the channel in real time, and determining whether the current transmission data of each target response signal is the same as the detected data: if the current transmission data of a certain target response signal is the same as the detected data, step S103 is performed. If the current transmission data of a certain target response signal is different from the detected data, step S104 is performed.
  • Step S103 continue to transmit the target response signal.
  • Step S104 Stop transmitting the target response signal and resend the target response signal in the next contention time slot.
  • Step S105 The above steps are repeatedly performed until all target response signals are transmitted to the target node device (ie, the source node device or the specific target node device).
  • the target node device ie, the source node device or the specific target node device.
  • the relay device when the second communication unit communicates with the destination node device through the master-slave communication method (that is, the relay device serves as the master device of the destination node device), the relay device uses the signal contention transmission method to the source node device or the specific The destination node device sends a response signal, which can simulate the contention process of the destination node device.
  • Figure 2 exemplarily shows the main structure of a multi-joint control system in this embodiment.
  • the multi-connected control system in this embodiment may include a main control device, a relay device, and a plurality of slave control devices (such as the slave control devices 1 to M shown in FIG. 2).
  • the relay device in this embodiment may include a first communication unit and a second communication unit.
  • the main control device can be communicatively coupled to a portion of the slave control device (from the slave devices 1 - N as shown in FIG. 2) and the first communication unit.
  • the second communication unit can be communicatively coupled to another portion of the slave control device (from the slave control devices N+1-M as shown in FIG. 2).
  • the first communication unit may be configured to receive the first control signal sent by the main control device, and send the first response signal fed back from the control device corresponding to the first control signal to the main control device.
  • the second communication unit may be configured to transmit the first control signal to its corresponding slave control device and receive a corresponding first response signal that is fed back from the control device according to the first control signal.
  • the relay device shown in FIG. 2 may adopt the relay device shown in FIG. 1 in the foregoing embodiment.
  • the specific working process of the relay device may refer to the foregoing relay. The working process of the relay device in the device embodiment is not described here for the sake of brevity.
  • FIG. 3 exemplarily shows the main structure of another multi-joint control system in this embodiment.
  • the multi-control system in this embodiment may include a main control device, a plurality of relay devices (such as the relay device 1 and the relay device 2 shown in FIG. 3), and a plurality of slave control devices. (From the control device 1 to the slave control device C shown in Fig. 3).
  • the multiple relay devices in this embodiment may be cascaded with each other to form a cascading path, wherein the first relay device in the cascading path is directly in communication connection with the main control device, and each of the relay devices is Connected with a part of the slave control device.
  • the relay device 1 in the cascade path formed by the relay device 1 and the relay device 2, the relay device 1 is directly in communication connection with the main control device, and the relay device 1 is also associated with the slave control device A+1 to The control device B is communicably connected, and the relay device 2 is communicably connected to the slave control device B+1 to the slave control device C, respectively.
  • the cascading path may be used to transmit the first control signal sent by the main control device or the second control signal sent from the control device to the corresponding slave control device step by step, and the corresponding slave device
  • the first response signal fed back according to the first control signal is transmitted to the main control device step by step or the corresponding second feedback signal fed back from the control device according to the second control signal to the specific slave control device.
  • the relay device 1 in the cascade path transmits the first control signal to the relay device 2 and the slave control devices A+1 to B, and the relay device 2 transmits the first control signal to the slave control device B+1 ⁇ C.
  • the relay device 2 transmits a first response signal fed back from the control devices B+1-C according to the first control signal to the relay device 1, and the relay device 1 transmits the first response signal to the main control device. .
  • the specific slave control device in this embodiment refers to a slave control device that is directly in communication connection with the master control device or a certain relay device (as shown in FIG. 3, for the relay device 1, the specific slave control device is the slave control device 1) From the control device A; for the relay device 2, the specific slave control device is from the control device A+1 to the slave control device B).
  • the particular slave control device may be configured to contend for the first control signal to the primary control device or to contend for the second response signal to the corresponding relay device.
  • a conventional contention signaling method in the communication technology field may be employed, and the primary control device is contending for the first response signal or the corresponding relay device is contending for the second response signal.

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Abstract

本发明涉及多联式空调系统通信控制技术领域，具体提供了一种中继设备及多联式控制系统，旨在解决如何在通信总线长度有限的情况下，实现室外机与批量室内机可靠通信的技术问题。为此目的，本发明中的多联式控制系统通过多个中继设备构成的级联通路来扩大通讯距离。具体地，级联通路将主控制设备/特定从控制设备(即与主控制设备或某个中继设备直接通信连接的从控制设备)发送的控制信号逐级传输至相应的从控制设备，以及将相应的从控制设备根据控制信号反馈的应答信号逐级传输至主控制设备/特定从控制设备。其中，中继设备能够基于主从式通信方式分别与源节点设备(即主控制设备)和目的节点设备(从控制设备)通信。

Description

中继设备及多联式控制系统 技术领域
本发明涉及多联式空调系统通信控制技术领域，具体涉及一种中继设备及多联式控制系统。
背景技术
多联式空调系统中每台室外机可与多台室内机通信，如每台室外机与64台室内机通信。具体地，室外机采用主从式通信方式与室内机通信，室外机作为主机将查询指令发送至部分或所有室内机，室内机作为从机只能根据查询指令向室外机反馈应答信息，并且室内机之间不能相互通信。基于主从式通信方式，虽然能够实现一台室外机操控多台室内机，但室内机数量往往受通信总线的长度限制(通信总线越长其所传输信号的衰减程度越大，因此通信总线长度具有上限)。同时，在空间结构复杂的场景中，也会由于通信总线的长度限制，无法实现室外机与室内机的正常通信。
为了克服通信总线长度有限的缺陷，申请公布号为CN104896658A的发明专利申请公开了一种空调系统的通信方法，该方法可以将某个室内机作为中继实现其他室内机与室外机的通信，进而解决了通信距离的问题。但是，当中继室内机同时传输本机和其他室内机的数据时，极易造成其网络传输拥堵，甚至导致传输故障，因而稳定性较差。
发明内容
为了解决现有技术中的上述问题，即为了解决如何在通信总线长度有限的情况下，实现室外机与批量室内机可靠通信的技术问题。为此目的，本发明提供了一种中继设备及多联式控制系统。
在第一方面，本发明中中继设备，包括通信模块，该通信模块配置为基于主从式通信方式，分别与预设的源节点设备和预设的目的节点设备通信。
进一步地，本发明提供的一个优选技术方案为：
所述通信模块包括：
第一通信单元，其配置为通过所述主从式通信方式接收所述源节点设备发送的第一控制信号，以及将所述第一控制信号所对应的目的节点设备反馈的第一应答信号发送至所述源节点设备；
第二通信单元，其配置为通过所述主从式通信方式将所述第一控制信号发送至其所对应的目的节点设备，并接收所述目的节点设备根据所述第一控制信号反馈的第一应答信号。
进一步地，本发明提供的一个优选技术方案为：
所述通信模块进一步配置为与特定目的节点设备通信；其中，所述特定目的节点设备为直接与所述源节点设备通信连接的目的节点设备；
在此情况下，所述第一通信单元进一步配置为接收所述特定目的节点设备发送的第二控制信号，以及将所述第二控制信号所对应的目的节点设备反馈的第二应答信号发送至所述特定目的节点设备；
所述第二通信单元进一步配置为将所述第二控制信号发送至其所对应的目的节点设备，并接收所述目的节点设备根据所述第二控制信号反馈的第二应答信号。
进一步地，本发明提供的一个优选技术方案为：
所述第一通信单元还配置为基于信号竞争发送方法，将所述目的节点设备反馈的第一应答信号发送至所述源节点设备或者将所述目的节点设备反馈的第二应答信号发送至所述特定目的节点设备。
进一步地，本发明提供的一个优选技术方案为：
所述信号竞争发送方法包括：
在预设的竞争时隙内，向目标节点设备同时发送所有目标应答信号；
实时检测信道中传输的数据，并判断每个所述目标应答信号的当前发送数据与所检测的数据是否相同；
若某个目标应答信号的当前发送数据与所述数据不同，则停止发送该目标应答信号并在下一个竞争时隙重新发送该目标应答信号；
其中，当所述目标节点设备为源节点设备时，所述目标应答信号为第一应答信号；当所述目标节点设备为特定目的节点设备时，所述目标应答信号为第二应答信号。
进一步地，本发明提供的一个优选技术方案为：
所述中继设备还包括校验模块，该校验模块配置为校验所述第一控制信号、第二控制信号、第一应答信号或第二应答信号是否正确；
在此情况下，所述第一通信单元进一步配置为在所述第一应答信号校验正确后再将其发送至所述源节点设备或者在所述第二应答信号校验正确后再将其发送至所述特定目的节点设备；
所述第二通信单元进一步配置为在所述第一控制信号或第二控制信号校验正确后再将其发送至相应的目的节点设备。
进一步地，本发明提供的一个优选技术方案为：
所述中继设备还包括缓存模块，该缓存模块配置为缓存所述第二通信单元所接收的第一应答信号和第二应答信号。
在第二方面，本发明中一种多联式控制系统，包括主控制设备、中继设备和多个从控制设备；
所述中继设备包括第一通信单元和第二通信单元；
所述主控制设备与所述从控制设备中的一部分和所述第一通信单元通信连接；所述第二通信单元与所述从控制设备中的另一部分通信连接；
所述第一通信单元配置为接收所述主控制设备发送的第一控制信号，以及将所述第一控制信号所对应的从控制设备反馈的第一应答信号发送至所述主控制设备；
所述第二通信单元配置为将所述第一控制信号发送至其所对应的从控制设备，并接收所述对应的从控制设备根据所述第一控制信号反馈的第一应答信号。
进一步地，本发明提供的一个优选技术方案为：
所述中继设备的数量为多个，并且多个所述中继设备彼此级联而形成级联通路；所述级联通路中的首个中继设备与所述主控制设备直接通信连接，并且每个所述中继设备均与所述从控制设备中的一部分通信连接；
所述级联通路用于将所述主控制设备发送的第一控制信号或特定从控制设备发送的第二控制信号逐级传输至相应的从控制设备，以及将所述相应的从控制设备根据所述第一控制信号反馈的第一应答信号逐级传输至所述主控制设备或将所述相应的从控制设备根据所述第二 控制信号反馈的第二应答信号逐级传输至所述特定从控制设备；
其中，所述特定从控制设备为与所述主控制设备或某个中继设备直接通信连接的从控制设备。
进一步地，本发明提供的一个优选技术方案为：
所述特定从控制设备配置为向所述主控制设备竞争发送所述第一应答信号或者向相应的中继设备竞争发送所述第二应答信号。
与最接近的现有技术相比，上述技术方案至少具有如下有益效果：
1、本发明中中继设备可以基于主从式通信方式，分别与预设的源节点设备和预设的目的节点设备通信。具体地，第一通信单元通过主从式通信方式与源节点设备通信(即中继设备作为源节点设备的从设备)，使得中继设备可以接收源节点设备下发的控制信号并向其反馈应答信号。第二通信单元通过主从式通信方式与目的节点设备通信(即中继设备作为目的节点设备的主设备)，使得中继设备可以向目的节点设备发送控制信号并接收目的节点设备反馈的应答信号。
2、本发明中中继设备还能与特定目的节点设备(即直接与源节点设备通信连接的目的节点设备)通信，使得中继设备无需通过源节点设备即可与源节点设备的其他从设备直接通信。
3、本发明中中继设备可以基于信号竞争发送方法，将目的节点设备反馈的第一应答信号发送至源节点设备或者将目的节点设备反馈的第二应答信号发送至特定目的节点设备。也就是说，中继设备能够模拟目的节点设备竞争发送应答信号的竞争发信过程。
4、本发明中多联式控制系统可以通过多个中继设备构成的级联通路来扩大通讯距离。具体地，级联通路可以将主控制设备发送的第一控制信号或特定从控制设备(即与主控制设备或某个中继设备直接通信连接的从控制设备)发送的第二控制信号逐级传输至相应的从控制设备，以及将相应的从控制设备根据第一控制信号反馈的第一应答信号逐级传输至主控制设备或将相应的从控制设备根据第二控制信号反馈的第二应答信号逐级传输至特定从控制设备。
附图说明
图1是本发明实施例中一种中继设备的主要结构示意图。
图2是本发明实施例中一种多联式控制系统的主要结构示意图；
图3是本发明实施例中另一种多联式控制系统的主要结构示意图。
具体实施方式
下面参照附图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。
下面结合附图，对本发明实施例中的中继设备进行说明。
参阅附图1，图1示例性示出了本实施例中中继设备的主要结构。如图1所示，本实施例中中继设备可以包括校验模块11、通信模块12和缓存模块13。
具体地，本实施例中通信模块12可以包括第一通信单元和第二通信单元，并且通信模块12可以配置为基于主从式通信方式，分别与预设的源节点设备和预设的目的节点设备通信。第一通信单元可以配置为通过主从式通信方式接收源节点设备发送的第一控制信号，以及将第一控制信号所对应的目的节点设备反馈的第一应答信号发送至源节点设备。第二通信单元可以配置为通过主从式通信方式将第一控制信号发送至其所对应的目的节点设备，并接收目的节点设备根据第一控制信号反馈的第一应答信号。
本实施例中中继设备的通讯数据(如第一控制信号或第一应答信号)主要由引导码、长度码、地址码、命令码、数据体和校验码组成。其中，引导码指的是用于同步每帧数据的引导头，长度码表示一帧数据的总长度，命令码表示通讯数据中包含的命令信息(如源节点设备对目的节点设备的控制命令或目的节点设备对源节点设备的应答命令)，地址码指的是源节点设备或目的节点设备的地址号，数据体指的是通讯数据内的各种数据信息，校验码指的是通讯数据的校验标志。
本实施例中校验模块11可以配置为校验第一控制信号和第一应答信号是否正确。相应地，第一通信单元进一步配置为在第一应答信号校验正确后再将其发送至源节点设备。第二通信单元进一步配置为 在第一控制信号校验正确后再将其发送至相应的目的节点设备。缓存模块13可以配置为缓存第二通信单元所接收的第一应答信号。
在本实施例中，第一通信单元通过主从式通信方式与源节点设备通信(即中继设备作为源节点设备的从设备)，使得中继设备可以接收源节点设备下发的控制信号并向其反馈应答信号。第二通信单元通过主从式通信方式与目的节点设备通信(即中继设备作为目的节点设备的主设备)，使得中继设备可以向目的节点设备发送控制信号并接收目的节点设备反馈的应答信号。
进一步地，本实施例中图1所示的中继设备的通信模块12还可以配置为与特定目的节点设备通信。其中，特定目的节点设备指的是为直接与源节点设备通信连接的目的节点设备。
具体地，本实施例中第一通信单元可以配置为接收特定目的节点设备发送的第二控制信号，以及将第二控制信号所对应的目的节点设备反馈的第二应答信号发送至特定目的节点设备。第二通信单元可以配置为将第二控制信号发送至其所对应的目的节点设备，并接收目的节点设备根据第二控制信号反馈的第二应答信号。
本实施例中校验模块11还可以配置为校验第二控制信号和第二应答信号是否正确。相应地，第一通信单元进一步配置为在第二应答信号校验正确后再将其发送至特定目的节点设备。第二通信单元进一步配置为在第二控制信号校验正确后再将其发送至相应的目的节点设备。缓存模块13还可以配置为缓存第二通信单元所接收的第二应答信号。
在本实施例中，第一通信单元在通过主从式通信方式与源节点设备通信(即中继设备作为源节点设备的从设备)时，还能与特定目的节点设备通信，使得中继设备无需通过源节点设备即可与源节点设备的其他从设备直接通信。
进一步地，在本实施例中第一通信单元还可以配置为基于信号竞争发送方法，将目的节点设备反馈的第一应答信号发送至源节点设备或者将目的节点设备反馈的第二应答信号发送至特定目的节点设备。
在本实施例的一个优选实施方案中，信号竞争发送方法可以包括如下步骤：
步骤S101：在预设的竞争时隙内，向目标节点设备同时发送所有目标应答信号。具体地，当目标节点设备为源节点设备时，目标 应答信号为第一应答信号。当目标节点设备为特定目的节点设备时，目标应答信号为第二应答信号。
步骤S102：实时检测信道中传输的数据，并判断每个目标应答信号的当前发送数据与所检测的数据是否相同：若某个目标应答信号的当前发送数据与检测到的数据相同则执行步骤S103，若某个目标应答信号的当前发送数据与检测到的数据不同则执行步骤S104。
步骤S103：继续发送这个目标应答信号。
步骤S104：停止发送这个目标应答信号并在在下一个竞争时隙重新发送该目标应答信号。
步骤S105：重复执行上述步骤，直至将所有目标应答信号发送至目标节点设备(即源节点设备或特定目标节点设备)。
在本实施例中，第二通信单元通过主从式通信方式与目的节点设备通信(即中继设备作为目的节点设备的主设备)时，中继设备使用信号竞争发送方法向源节点设备或特定目的节点设备发送应答信号，可以模拟目的节点设备的竞争发信过程。
下面结合附图，对本发明实施例中的多联式控制系统进行说明。
参阅附图2，图2示例性示出了本实施例中一种多联式控制系统的主要结构。如图2所示，本实施例中多联式控制系统可以包括一个主控制设备、一个中继设备和多个从控制设备(如图2所示的从控制设备1～M)。
具体地，本实施例中中继设备可以包括第一通信单元和第二通信单元。主控制设备可以与从控制设备中的一部分(如图2所示的从控制设备1～N)和第一通信单元通信连接。第二通信单元可以与从控制设备中的另一部分(如图2所示的从控制设备N+1～M)通信连接。
本实施例中第一通信单元可以配置为接收主控制设备发送的第一控制信号，以及将第一控制信号所对应的从控制设备反馈的第一应答信号发送至主控制设备。第二通信单元可以配置为将第一控制信号发送至其所对应的从控制设备，并接收对应的从控制设备根据第一控制信号反馈的第一应答信号。在本实施例的一个优选实施方案中，图2所示的中继设备可以采用前述实施例中图1所示的中继设备，本实施方案中中 继设备的具体工作过程可以参照前述中继设备实施例中中继设备的工作过程，为了描述简洁，在此不再赘述。
继续参阅附图3，图3示例性示出了本实施例中另一种多联式控制系统的主要结构。如图3所示，本实施例中多联式控制系统可以包括一个主控制设备、多个中继设备(如图3所示的中继设备1和中继设备2)和多个从控制设备(如图3所示的从控制设备1～从控制设备C)。
具体地，本实施例中的多个中继设备可以彼此级联而形成级联通路，其中，级联通路中的首个中继设备与主控制设备直接通信连接，并且每个中继设备均与从控制设备中的一部分通信连接。如图3所示，在中继设备1和中继设备2形成的级联通路中，中继设备1与主控制设备直接通信连接，中继设备1还分别与从控制设备A+1～从控制设备B通信连接，中继设备2分别与从控制设备B+1～从控制设备C通信连接。
在本实施例中，级联通路可以用于将主控制设备发送的第一控制信号或特定从控制设备发送的第二控制信号逐级传输至相应的从控制设备，以及将相应的从控制设备根据第一控制信号反馈的第一应答信号逐级传输至主控制设备或将相应的从控制设备根据第二控制信号反馈的第二应答信号逐级传输至特定从控制设备。
例如，级联通路中中继设备1将第一控制信号发送至中继设备2和从控制设备A+1～B，中继设备2再将第一控制信号发送至从控制设备B+1～C。又例如，中继设备2将从控制设备B+1～C根据第一控制信号反馈的第一应答信号发送至中继设备1，中继设备1再将这个第一应答信号发送至主控制设备。
本实施例中特定从控制设备指的是与主控制设备或某个中继设备直接通信连接的从控制设备(如图3所示，针对中继设备1，特定从控制设备是从控制设备1～从控制设备A；针对中继设备2，特定从控制设备是从控制设备A+1～从控制设备B)。在本实施例的一个优选实施方案中，特定从控制设备可以配置为向主控制设备竞争发送第一应答信号或者向相应的中继设备竞争发送第二应答信号。具体地，在本实施方案中可以采用通信技术领域中常规的竞争发信方法，向主控制设备竞争发送第一应答信号或者向相应的中继设备竞争发送第二应答信号。
本领域的技术人员能够理解，尽管在此所述的一些实施例包括其它实施例中所包括的某些特征而不是其它特征，但是不同实施例的特征的组合意味着处于本发明的范围之内并且形成不同的实施例。例如，在本发明的权利要求书中，所要求保护的实施例的任意之一都可以以任意的组合方式来使用。
应该注意的是上述实施例对本发明进行说明而不是对本发明进行限制，并且本领域技术人员在不脱离所附权利要求的范围的情况下可设计出替换实施例。单词“包括”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本发明可以借助于包括有若干不同元件的硬件以及借助于适当编程的PC来实现。在列举了若干模块的单元权利要求中，这些模块中的若干个可以是通过同一个硬件项来具体体现。
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作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. 一种中继设备，其特征在于包括通信模块，该通信模块配置为基于主从式通信方式，分别与预设的源节点设备和预设的目的节点设备通信。
  2. 根据权利要求1所述的中继设备，其特征在于，所述通信模块包括：
    第一通信单元，其配置为通过所述主从式通信方式接收所述源节点设备发送的第一控制信号，以及将所述第一控制信号所对应的目的节点设备反馈的第一应答信号发送至所述源节点设备；
    第二通信单元，其配置为通过所述主从式通信方式将所述第一控制信号发送至其所对应的目的节点设备，并接收所述目的节点设备根据所述第一控制信号反馈的第一应答信号。
  3. 根据权利要求2所述的中继设备，其特征在于，
    所述通信模块进一步配置为与特定目的节点设备通信；其中，所述特定目的节点设备为直接与所述源节点设备通信连接的目的节点设备；
    在此情况下，所述第一通信单元进一步配置为接收所述特定目的节点设备发送的第二控制信号，以及将所述第二控制信号所对应的目的节点设备反馈的第二应答信号发送至所述特定目的节点设备；
    所述第二通信单元进一步配置为将所述第二控制信号发送至其所对应的目的节点设备，并接收所述目的节点设备根据所述第二控制信号反馈的第二应答信号。
  4. 根据权利要求3所述的中继设备，其特征在于，
    所述第一通信单元还配置为基于信号竞争发送方法，将所述目的节点设备反馈的第一应答信号发送至所述源节点设备或者将所述目的节点设备反馈的第二应答信号发送至所述特定目的节点设备。
  5. 根据权利要求4所述的中继设备，其特征在于，所述信号竞争发送方法包括：
    在预设的竞争时隙内，向目标节点设备同时发送所有目标应答信号；
    实时检测信道中传输的数据，并判断每个所述目标应答信号的当前发送数据与所检测的数据是否相同；
    若某个目标应答信号的当前发送数据与所述数据不同，则停止发送该目标应答信号并在下一个竞争时隙重新发送该目标应答信号；
    其中，当所述目标节点设备为源节点设备时，所述目标应答信号为第一应答信号；当所述目标节点设备为特定目的节点设备时，所述目标应答信号为第二应答信号。
  6. 根据权利要求3-5中任一项所述的中继设备，其特征在于，所述中继设备还包括校验模块，该校验模块配置为校验所述第一控制信号、第二控制信号、第一应答信号或第二应答信号是否正确；
    在此情况下，所述第一通信单元进一步配置为在所述第一应答信号校验正确后再将其发送至所述源节点设备或者在所述第二应答信号校验正确后再将其发送至所述特定目的节点设备；
    所述第二通信单元进一步配置为在所述第一控制信号或第二控制信号校验正确后再将其发送至相应的目的节点设备。
  7. 根据权利要求3-5中任一项所述的中继设备，其特征在于，所述中继设备还包括缓存模块，该缓存模块配置为缓存所述第二通信单元所接收的第一应答信号和第二应答信号。
  8. 一种多联式控制系统，其特征在于包括主控制设备、中继设备和多个从控制设备；
    所述中继设备包括第一通信单元和第二通信单元；
    所述主控制设备与所述从控制设备中的一部分和所述第一通信单元通信连接；所述第二通信单元与所述从控制设备中的另一部分通信连接；
    所述第一通信单元配置为接收所述主控制设备发送的第一控制信号，以及将所述第一控制信号所对应的从控制设备反馈的第一应答信号发送至所述主控制设备；
    所述第二通信单元配置为将所述第一控制信号发送至其所对应的从控制设备，并接收所述对应的从控制设备根据所述第一控制信号反馈的 第一应答信号。
  9. 根据权利要求8所述的多联式控制系统，其特征在于，
    所述中继设备的数量为多个，并且多个所述中继设备彼此级联而形成级联通路；所述级联通路中的首个中继设备与所述主控制设备直接通信连接，并且每个所述中继设备均与所述从控制设备中的一部分通信连接；
    所述级联通路用于将所述主控制设备发送的第一控制信号或特定从控制设备发送的第二控制信号逐级传输至相应的从控制设备，以及将所述相应的从控制设备根据所述第一控制信号反馈的第一应答信号逐级传输至所述主控制设备或将所述相应的从控制设备根据所述第二控制信号反馈的第二应答信号逐级传输至所述特定从控制设备；
    其中，所述特定从控制设备为与所述主控制设备或某个中继设备直接通信连接的从控制设备。
  10. 根据权利要求9所述的多联式控制系统，其特征在于，
    所述特定从控制设备配置为向所述主控制设备竞争发送所述第一应答信号或者向相应的中继设备竞争发送所述第二应答信号。
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