CN103616838A - CD code/4-20ma current conversion output module - Google Patents
CD code/4-20ma current conversion output module Download PDFInfo
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- CN103616838A CN103616838A CN201310645717.7A CN201310645717A CN103616838A CN 103616838 A CN103616838 A CN 103616838A CN 201310645717 A CN201310645717 A CN 201310645717A CN 103616838 A CN103616838 A CN 103616838A
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Abstract
The invention relates to a CD code/4-20ma current conversion output module. The CD code/4-20ma current conversion output module comprises a signal receiving part, a CPU processing and displaying part and a signal transmission part. The signal receiving part comprises a BCD input module and an isolating module which is in communication connection with the BCD input module. The CUP processing and displaying part comprises a CPU, a power supply and an indicator lamp, wherein the CPU is in communication connection with the isolating module, and the power supply and the indicator lamp are connected with the CPU. The signal transmission part is a 4-20ma current output module which is in communication connection with the CPU. A common signal conversion situation in a signal conversion device is modularized, the CD code/4-20ma conversion output module has the advantages of being small in size and convenient to install (can be installed on a guide rail of an existing cabinet), and when a transformer substation or new equipment of a power plant needs to have access to 4-20ma gear information and bcd output exists in an original gear output mode, the CD code/4-20ma current conversion output module can solve the problem and save cost.
Description
Technical field
The present invention relates to a kind of electric current output module.
Background technology
Existing product integrates multiple gear signal input and the way of output, but is also difficult to accomplish to meet on-the-spot all situations.And volume is large, installation trouble, is not to facilitate especially.
Summary of the invention
The object of the invention is the deficiency existing for prior art, provide a kind of modularization, volume CD code little and easy for installation to turn 4-20ma electric current output module.
For achieving the above object, the technical solution used in the present invention is that a kind of CD code turns 4-20ma electric current output module, comprises that signal receive section, CPU processing and display section and signal transmission unit divide; Described signal receive section comprises BCD load module and communicates with connected isolation module; Described CPU processes and display section comprises CPU and the power supply being connected with CPU and the pilot lamp communicating to connect with isolation module; Described signal transmission unit is divided into the 4-20ma electric current output module with CPU communication connection.
Described pilot lamp is LED light.
Beneficial effect: the present invention, by a kind of common signal change over condition modularization in chromacoder, has volume little, the feature of (can install on the guide rail of existing rack) easy for installation.When transformer station or power plant have new equipment need to access the gear information of 4-20ma, and original gear way of output has bcd output, at this moment with this product, can address this problem, again can be cost-saving.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is cpu circuit figure in the embodiment of the present invention;
Fig. 3 is 4-20ma electric current output module circuit diagram in the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, the present embodiment is implemented take technical solution of the present invention under prerequisite, should understand these embodiment and only for the present invention is described, is not used in and limits the scope of the invention.
As shown in Figure 1, a kind of CD code turns 4-20ma electric current output module, comprises that signal receive section, CPU processing and display section and signal transmission unit divide; Signal receive section comprises BCD load module and communicates with connected isolation module; CPU processes and display section comprises CPU and the power supply being connected with CPU and the LED light communicating to connect with isolation module; Signal transmission unit is divided into the 4-20ma electric current output module with CPU communication connection.
Product work principle:
1, product powers on;
2, signal receive section receives binary-coded decimal gear signal;
3, voltage signal transmits signal to single-chip microcomputer through TL181 light-coupled isolation;
4, CPU part as shown in Figure 2: the selected model of single-chip microcomputer is STM32, its turning 22,21,19,18,11,29 receive respectively binary-coded decimal 1,2,4,8, A, B, after signal receives into, control AD420 chip and convert corresponding direct current 4-20ma output to;
5, output is as shown in Figure 3: selected chip is AD420,, 789 3 turnings are respectively trigger pip, clock and the configuration data of AD420.
Claims (2)
1. CD code turns a 4-20ma electric current output module, it is characterized in that: comprise that signal receive section, CPU processing and display section and signal transmission unit divide; Described signal receive section comprises BCD load module and communicates with connected isolation module; Described CPU processes and display section comprises CPU and the power supply being connected with CPU and the pilot lamp communicating to connect with isolation module; Described signal transmission unit is divided into the 4-20ma electric current output module with CPU communication connection.
2. a kind of CD code turns 4-20ma electric current output module according to claim 1, it is characterized in that: described pilot lamp is LED light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645717.7A CN103616838A (en) | 2013-12-04 | 2013-12-04 | CD code/4-20ma current conversion output module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645717.7A CN103616838A (en) | 2013-12-04 | 2013-12-04 | CD code/4-20ma current conversion output module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103616838A true CN103616838A (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310645717.7A Pending CN103616838A (en) | 2013-12-04 | 2013-12-04 | CD code/4-20ma current conversion output module |
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| CN (1) | CN103616838A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811024A (en) * | 2015-04-23 | 2015-07-29 | 许继集团有限公司 | Converter transformer on-load voltage regulation reference voltage compensation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201429890Y (en) * | 2009-06-25 | 2010-03-24 | 郑州轻工业学院 | Gas alarm |
| CN201993599U (en) * | 2011-03-25 | 2011-09-28 | 大连经济技术开发区山海电子有限公司 | Self-turning PID (piping and instruments diagram) controller |
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2013
- 2013-12-04 CN CN201310645717.7A patent/CN103616838A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201429890Y (en) * | 2009-06-25 | 2010-03-24 | 郑州轻工业学院 | Gas alarm |
| CN201993599U (en) * | 2011-03-25 | 2011-09-28 | 大连经济技术开发区山海电子有限公司 | Self-turning PID (piping and instruments diagram) controller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811024A (en) * | 2015-04-23 | 2015-07-29 | 许继集团有限公司 | Converter transformer on-load voltage regulation reference voltage compensation method |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140305 |