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Control method and control device of communication equipment, communication system and storage medium

A technology of communication equipment and control method, which is applied in heating and ventilation control systems, heating and ventilation safety systems, mechanical equipment, etc., and can solve the problems of small capacitance, affecting the communication distance and anti-interference ability of air conditioning communication systems, and large inductance, etc. question

Active Publication Date: 2021-03-26
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the power supply and data exist on the communication bus at the same time, it is necessary to block the DC power supply when performing data interaction, such as using capacitors to block the communication; when a DC signal is required, it is necessary to use the inductors L2 and L3 to block the communication, usually Under the circumstances, the volume of the capacitor is small. For the controller equipped with the above-mentioned communication system, the impact on its volume is small, while the volume of the inductor is large and belongs to the load. Its design size will affect the volume of the controller and the communication of the air conditioner. The driving ability of the system affects the communication distance and anti-interference ability of the overall air conditioning communication system

Method used

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  • Control method and control device of communication equipment, communication system and storage medium
  • Control method and control device of communication equipment, communication system and storage medium
  • Control method and control device of communication equipment, communication system and storage medium

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Embodiment 1

[0081] Such as figure 2 As shown, according to the first aspect of the present invention, the present invention provides one of the control methods of a communication device, which is used for the first communication device, wherein the communication bus connects the first communication device and the second communication device, and the communication Device control methods include:

[0082] Step 202, control the level signal on the communication bus to change between the first level signal and the second level signal, wherein, when the level signal of the communication bus is in the stage of the first level signal, the first communication device A data connection is established with the second communication device, and a power supply connection is established between the second communication device and the first communication device when the level signal of the communication bus is at the stage of the second level signal.

[0083] The embodiment of the present invention pro...

Embodiment 2

[0088] In one embodiment of the present invention, the present invention provides one of the control methods of a communication device, which is used for the first communication device, wherein the communication bus connects the first communication device and the second communication device through the communication bus, The control method of the communication device includes: controlling the level signal periodically output to the communication bus to change between the first level signal and the second level signal, wherein, based on when the level signal of the communication bus is at the first level signal stage, the second first communication device establishes a data connection with the first second communication device, based on when the level signal of the communication bus is in the second level signal stage, the second communication device communicates with the first communication device A power supply connection is established between the devices.

[0089] In the ab...

Embodiment 3

[0094] In one embodiment of the present invention, taking Embodiment 2 as an example, the level signal on the communication bus switches between the first level signal and the second level signal in each cycle, which can be understood as a standby state without data , in this state, the level of the first level signal is higher than the level of the second level signal.

[0095] The communication device control method further includes: adjusting the first duration to a third duration, and adjusting the second duration to a fourth duration, wherein the first duration is less than the third duration, the second duration is greater than the fourth duration, and the first duration and the fourth duration are The sum of the second duration, the sum of the third duration and the fourth duration is the target duration.

[0096] In this embodiment, as described in the above document, the fixed cycle time composed of the first duration and the second duration corresponding to the first...

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Abstract

The invention provides a control method and control device of communication equipment, a communication system and a storage medium. The control method of the communication equipment comprises the steps of periodically outputting a first level signal and a second level signal to a communication bus, wherein the level signals based on the communication bus are first level signals, data connection isestablished between second communication equipment and first communication equipment, the level signals based on the communication bus are second level signals, and power supply connection is established between the second communication equipment and the first communication equipment. Data connection and power supply connection do not occur at the same time, so that compared with a traditional Homebus bus, the communication bus applying the control method does not need to be provided with an inductor, the size of a controller is reduced, influence of inductance on the driving capability of anair conditioner communication system, and the communication distance and the anti-interference capability of the whole air conditioner communication system is reduced, and besides, the cost of the controller is also reduced.

Description

technical field [0001] The present invention relates to the technical field of communication control, in particular, to a control method, a control device, a communication system and a storage medium of a communication device. Background technique [0002] Existing air conditioning communication systems use communication buses such as 485, CAN, Homebus, and PLC for communication. Among the above-mentioned buses, Homebus and PLC are buses that can provide communication and power supply. [0003] Take Homebus as an example, figure 1 Shows a schematic circuit diagram of the Homebus communication node, where the Homebus communication interface chip couples the data to be sent to the communication bus through the first capacitor E1 and the second capacitor E2 when sending data, and when receiving data, through the third The capacitor C1 and the fourth capacitor C2 couple the data on the communication bus. If the current node is a power supply node, the DC power supply loads the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/54F24F11/64F24F11/61F24F11/88F24F11/89
CPCF24F11/54F24F11/64F24F11/61F24F11/88F24F11/89Y02D10/00H04L12/12H04L2012/40208H04L12/10G06F1/266G06F1/189
Inventor 梅利军孙良伟吴田刘国峰
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD