CN2314417Y - Decoupling digital sampling driver - Google Patents
Decoupling digital sampling driver Download PDFInfo
- Publication number
- CN2314417Y CN2314417Y CN 97251371 CN97251371U CN2314417Y CN 2314417 Y CN2314417 Y CN 2314417Y CN 97251371 CN97251371 CN 97251371 CN 97251371 U CN97251371 U CN 97251371U CN 2314417 Y CN2314417 Y CN 2314417Y
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- China
- Prior art keywords
- signal
- circuit
- output
- signals
- collection
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- Expired - Fee Related
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Abstract
The utility model relates to a decoupling digital sampling driver, which belongs to an electric signal converting device. The circuit is provided with an input circuit to receive signals and an output circuit to output signals, and a photocoupling device is used to transform the signals and realize the signal collection. The device is accessed into the loop circuit of the original signal, the original signal loop circuit is not influenced, and the collection of switching state values and the collection of optical word plate signals and protective signals can be carried out. On the basis of the device a corresponding external circuit is matched to obtain the high-power digital value output signal.
Description
The utility model relates to a kind of harvester of electric signal, belongs to light electric coupling method switching electrical signals.
Improving in the process of unattended transformation of old-fashioned transformer station and generating plant computer supervisory control system, the remote signalling sampling of protective number is by traditional method, and the retrofit work amount is quite big, the cost height, and also effect is not necessarily satisfied.The for example collection of on off state amount, traditional method are to get auxiliary contact on the operating mechanism case of oil switch, and this method need be with a large amount of cables, and occur the unreliable and jitter phenomenon of contact easily.The and for example alarm window signal of control flow and obtaining of guard signal, traditional method are to install various model relays additional to obtain the remote signalling contact with the contact that increases relay on protection screen, but can increase the investment and the installation difficulty of relay like this.
The utility model purpose is to provide a kind of electrical signal conversion device, can collect stable electric signal by this device
Fig. 1 be the utility model provide every coupling digital sample driver logic figure.
Drawing explanation: 1, signal input 2, input protection
3, conversion of signals 4, output protection
5, signal output 6, external loading
To achieve these goals, what the utility model provided is a kind of every coupling digital sample driver, is made up of a shell and electronic circuit.
Principle of work according to this device of Fig. 1 comprises signal input, processes such as input signal protection, conversion of signals, output signal protection, signal output.The above-mentioned course of work realizes that by electronic circuit said electronic circuit comprises input circuit, output circuit and signal protection circuit etc.It is characterized in that connecting by the photoelectrical coupler coupling between signal input circuit and signal output loop; All forward and reverse and diode arranged in the input circuit, the light emitting diode string of photoelectrical coupler has current-limiting resistance, output coupled has voltage dependent resistor (VDR) and signal, indicator elment, input end is connected in series into the original signal loop, output termination terminal unit, output terminal is to export in no source contact mode, determines the way of output according to the different circuit configurations of using.
This device can be installed concentratedly, also can disperse to install, and can be applicable to the unattended transformation of old-fashioned transformer station, the aspect such as perfect of generating plant and other industry central station of floating dock computer supervisory control system.For example, adopt when coupling digital sample driver carries out the collection of on off state amount,, compare with the traditional approach method and saved a large amount of cables as long as handle assembly inserts former red and green signals modulating signal loop.And for example, adopt, when gathering the protection remote signalling,, compare the investment of having saved relay with traditional method as long as this is installed the corresponding circuit that inserts required collection every coupling digital sample driver.For another example, on the basis of this device, be equipped with corresponding external circuit and can obtain high power digital amount output signal.
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiments.
Fig. 2 is the circuit diagram of an embodiment of the utility model.
According to Fig. 2, in the input circuit of present embodiment circuit, by diode D
1, D
2Light emitting diode among series connection back and the photoelectrical coupler GO in the same way and connect, and diode D
3Then with photoelectrical coupler GO in light emitting diode oppositely and connect, for improving the antijamming capability of circuit, in input circuit, and connect a capacitor C, input circuit is connected in series in the original signal loop of bringing onto load 6.Connect by photoelectrical coupler GO coupling between input circuit and the output loop.Luminous indicating diode D
4And protective resistance R
2And connect the back, be serially connected in the output loop voltage dependent resistor (VDR) RV
1, RV
2The series connection back is with output loop and meet voltage dependent resistor (VDR) RV
1, RV
2Abutting end ground connection.Output terminal is connected with terminal unit
Claims (1)
1, a kind of every coupling digital sample driver, comprise circuit such as signal input, signal output, signal protection, conversion of signals, it is characterized in that connecting by the photoelectrical coupler coupling between signal input circuit and signal output loop; All forward and reverse and diode is arranged in the input circuit, the light emitting diode string of photoelectrical coupler has current-limiting resistance; Output coupled has voltage dependent resistor (VDR) and signal indication original paper; Input end is connected in series in the original signal loop, output termination terminal unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97251371 CN2314417Y (en) | 1997-12-25 | 1997-12-25 | Decoupling digital sampling driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97251371 CN2314417Y (en) | 1997-12-25 | 1997-12-25 | Decoupling digital sampling driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2314417Y true CN2314417Y (en) | 1999-04-14 |
Family
ID=33957516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97251371 Expired - Fee Related CN2314417Y (en) | 1997-12-25 | 1997-12-25 | Decoupling digital sampling driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2314417Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135024A1 (en) * | 2020-12-21 | 2022-06-30 | 金卡智能集团股份有限公司 | Pulse signal output circuit and flowmeter |
-
1997
- 1997-12-25 CN CN 97251371 patent/CN2314417Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135024A1 (en) * | 2020-12-21 | 2022-06-30 | 金卡智能集团股份有限公司 | Pulse signal output circuit and flowmeter |
| GB2617511A (en) * | 2020-12-21 | 2023-10-11 | Goldcard Smart Group Co Ltd | Pulse signal output circuit and flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |