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Optical coupler communication circuit, communication chip and air conditioner

A communication circuit and optocoupler technology, which is applied in the field of optocoupler communication, can solve the problems of high communication failure rate, achieve the effect of reducing communication abnormalities and communication failure rate

Pending Publication Date: 2018-12-04
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the application provides an optocoupler communication circuit, a communication chip and an air conditioner to solve the problem of high communication failure rate of the optocoupler communication circuit in the prior art

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  • Optical coupler communication circuit, communication chip and air conditioner
  • Optical coupler communication circuit, communication chip and air conditioner
  • Optical coupler communication circuit, communication chip and air conditioner

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Embodiment Construction

[0046] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0047] figure 1 It is a schematic diagram of an optocoupler communication circuit in the prior art, figure 2 for figure 1 The application diagram of the optocoupler communication circuit in China, such as figure 1 with figure 2 As shown, the optocoupler communication circuit in the prior art is composed of a signal transmission module TX, a second resistor R2, an optocoupler U1, a ...

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Abstract

The invention relates to an optical coupler communication circuit, a communication chip and an air conditioner. A signal transmission module, an amplifying module, an optical coupler and a signal receiving module are included; the optical coupler comprises an input end and an output end, the signal transmission module, the amplifying module and the input end form a first loop, the signal receivingmodule and the output end form a second loop, when the signal transmission module inputs a first signal, the first loop is in the conduction state, the amplifying module amplifies the current of thefirst loop, and the current of the second loop is smaller than the product of the current of the first loop and the current transmission ratio of the optical coupler.

Description

technical field [0001] The present application relates to the technical field of optocoupler communication, in particular to an optocoupler communication circuit, a communication chip and an air conditioner. Background technique [0002] At present, the mainstream communication methods in the air-conditioning industry are mainly based on 485 communication and Universal Asynchronous Receiver / Transmitter (UART) communication. Both ends of the two communication methods need signal isolation processing, and the most common and most suitable isolation processing method is isolation through optocouplers. [0003] However, due to the characteristics of the optocoupler itself, temperature has a great influence on the current transfer ratio (CTR), which may lead to signal recognition errors, resulting in abnormal communication and a high communication failure rate. Contents of the invention [0004] In view of this, the present application provides an optocoupler communication cir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/56F24F11/88
CPCF24F11/56F24F11/88
Inventor 郑嘉良贺小林刘梦坷韦高宇黄银彬
Owner GREE ELECTRIC APPLIANCES INC
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