CN102843125A - Unidirectional communication circuit - Google Patents
Unidirectional communication circuit Download PDFInfo
- Publication number
- CN102843125A CN102843125A CN 201110169409 CN201110169409A CN102843125A CN 102843125 A CN102843125 A CN 102843125A CN 201110169409 CN201110169409 CN 201110169409 CN 201110169409 A CN201110169409 A CN 201110169409A CN 102843125 A CN102843125 A CN 102843125A
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- optocoupler
- communication circuit
- connects
- present
- triode
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Abstract
The invention discloses a unidirectional communication circuit, comprising an optocoupler and a transistor, wherein a signal source is connected to the base of the transistor through a first resistor; the collector of the transistor is connected to one input end of the optocoupler; a first working power supply is connected to the other input end of the optocoupler through a second resistor; one output end of the optocoupler is connected to a second working power supply; and the other output end of the optocoupler is connected to a communication code. The unidirectional communication circuit is simple in structure and convenient for use, and can be used to the occasions for collecting the communication code, for example, pressure water temperature and position sensor in a solar heater.
Description
Technical field
The present invention relates to a kind of application circuit, concrete relate to a kind of one-way communication circuit.
Background technology
Existing one-way communication circuit is varied of a great variety, but most complex structure, function is complicated; And only need under the application scenario of function singleness at some, adopt the drive circuit of complicated circuit construction to accomplish the information collection function of simple function often, cost can increase so on the one hand; In addition on the one hand; After circuit structure was in a single day complicated, its destabilizing factor was behind so just reducing product percent of pass virtually also increasing.
Summary of the invention
For overcoming deficiency of the prior art, the object of the present invention is to provide a kind of one-way communication circuit simple in structure.
In order to solve the problems of the technologies described above, realize above-mentioned purpose, the present invention has adopted following technical scheme:
A kind of one-way communication circuit; Comprise optocoupler and triode; Signal source connects the base stage of said triode through first resistance, and the collector electrode of said triode connects an input of said optocoupler, and first working power connects another input of said optocoupler through second resistance; An output of said optocoupler connects second working power, and another output of said optocoupler connects communication code.
Further, cross-over connection pull down resistor and common electric capacity between said communication code and the ground.
The course of work of one-way communication circuit of the present invention is following:
Signal is a high level when said signal source place, said optocoupler conducting, and communication code place signal also is a high level, on the contrary not conducting of said optocoupler when signal source place signal is low level.Because the existence of pull down resistor, communication code place signal also is a low level.One-way communication circuit of the present invention has effectively been accomplished the forward transmission of signal.
The present invention has the following advantages:
One-way communication circuit of the present invention simple in structure, easy to use.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. specify as after.Embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Fig. 1 is the circuit theory diagrams of one-way communication circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment technology implementation process of the present invention is further specified.
Referring to shown in Figure 1; A kind of one-way communication circuit comprises optocoupler U1 and triode Q1, and signal source T-DATA connects the base stage of said triode Q1 through first resistance R 1; The collector electrode of said triode Q1 connects the input of said optocoupler U1; The first working power V1 is through another input of the said optocoupler U1 of second resistance R, 2 connections, and the output of said optocoupler U1 connects the second working power V2, and another output of said optocoupler U1 connects communication code R-DATA.
Further, cross-over connection pull down resistor R3 and common electric capacity C1 between said communication code R-DATA and the ground.
The foregoing description just is to let the one of ordinary skilled in the art can understand content of the present invention and enforcement according to this in order technical conceive of the present invention and characteristics to be described, to be its objective is, can not limit protection scope of the present invention with this.The variation or the modification of every equivalence that the essence of content has been done according to the present invention all should be encompassed in protection scope of the present invention.
Claims (2)
1. one-way communication circuit; It is characterized in that: comprise optocoupler (U1) and triode (Q1); Signal source (T-DATA) connects the base stage of said triode (Q1) through first resistance (R1); The collector electrode of said triode (Q1) connects an input of said optocoupler (U1); First working power (V1) connects another input of said optocoupler (U1) through second resistance (R2), and an output of said optocoupler (U1) connects second working power (V2), and another output of said optocoupler (U1) connects communication code (R-DATA).
2. according to claims 1 described one-way communication circuit, it is characterized in that: cross-over connection pull down resistor (R3) and common electric capacity (C1) between said communication code (R-DATA) and the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110169409 CN102843125A (en) | 2011-06-22 | 2011-06-22 | Unidirectional communication circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110169409 CN102843125A (en) | 2011-06-22 | 2011-06-22 | Unidirectional communication circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102843125A true CN102843125A (en) | 2012-12-26 |
Family
ID=47370228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110169409 Pending CN102843125A (en) | 2011-06-22 | 2011-06-22 | Unidirectional communication circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102843125A (en) |
-
2011
- 2011-06-22 CN CN 201110169409 patent/CN102843125A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121226 |