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Current loop communication circuit and air conditioner

A technology of current loop communication and communication circuit, which is applied in the field of current loop communication, can solve problems such as failure of current loop communication, and achieve the effect of resisting the interference of increased coupling capacitance and stabilizing current loop communication

Active Publication Date: 2022-04-05
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, this application provides a current loop communication circuit and an air conditioner, which helps to solve the current loop communication situation. When the connection line is too long, the coupling capacitance increases Problems that cause current loop communication to fail

Method used

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  • Current loop communication circuit and air conditioner
  • Current loop communication circuit and air conditioner

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Embodiment Construction

[0039] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be described in detail below. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in the present application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0040] see figure 1 and figure 2 , figure 1 is a schematic diagram of the principle of a current loop communication circuit shown according to an exemplary embodiment, figure 2 is a specific schematic diagram of a current loop communication circuit shown according to an exemplary embodiment, as shown in figure 1 and figure 2 As shown, the current loop communication circuit includes:

[0041] The host-side communication circuit 11 and the slave-side commu...

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Abstract

The invention relates to a current loop communication circuit and an air conditioner, and belongs to the technical field of current loop communication. The communication circuit comprises a host side communication circuit and a slave side communication circuit, wherein the host side communication circuit and the slave side communication circuit are jointly connected with a zero line and a communication line; and the at least one current loading circuit is connected with the host side communication circuit, and when the current loading circuit receives a current loading signal, loading current is formed on the current loading circuit, so that communication current passing through a communication line is increased. The problem that under the condition of current loop communication, when a connecting line is too long, current loop communication fails due to the fact that coupling capacitance is increased is solved.

Description

technical field [0001] The application belongs to the technical field of current loop communication, and specifically relates to a current loop communication circuit and an air conditioner. Background technique [0002] The current loop communication circuit has the advantages of convenient installation and low cost, and is currently widely used in the communication between indoor and outdoor units of air conditioners. In a specific application, the communication circuit and the power supply circuit share the neutral line, only need to add a communication line, and the communication between the internal and external units of the air conditioner can be realized by using the neutral line and the communication line. [0003] Since the current loop communication needs to share the neutral line with the power circuit, the length of the connecting line (communication line and power line) between the internal and external units is not fixed during actual installation. The larger t...

Claims

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Application Information

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IPC IPC(8): H04B3/54H04B10/80F24F11/88F24F11/89
Inventor 左攀解超群吴帆马金童
Owner GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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