CN203688661U - Acquisition circuit for state variable of electric energy meter - Google Patents
Acquisition circuit for state variable of electric energy meter Download PDFInfo
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- CN203688661U CN203688661U CN201320618178.3U CN201320618178U CN203688661U CN 203688661 U CN203688661 U CN 203688661U CN 201320618178 U CN201320618178 U CN 201320618178U CN 203688661 U CN203688661 U CN 203688661U
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- capacitor
- resistance
- acquisition circuit
- electric energy
- resistor
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Abstract
The utility model discloses an acquisition circuit for a state variable of an electric energy meter. One end of a capacitor C2 is connected with one end of a resistor R3. The other end of the capacitor C2 is connected to the cathode of an output end of a photoelectric coupler E1 and a common grounding end. The other end of the resistor R3 is connected with one end of a resistor R2 and the anode of an output end of the photoelectric coupler E1. The other end of the resistor R2 is connected to a first power supply end. The cathode of an output end of a photoelectric coupler E1 is connected to the cathode of a switching diode VD1, one end of a resistor R1 and one end of a capacitor C1. The other end of the resistor R1 is connected to a second power supply end. The cathode of an output end of a photoelectric coupler E1 is connected to the anode of the switching diode VD1, the other end of the capacitor C1, one end of a resistor R4 and one end of a capacitor C3. The other end of the capacitor C3 is connected to the common grounding end. The other end of the resistor R4 is connected to one end of an inductor L1. The other end of the inductor L1 is a Remote_in pin. The normal operation of the acquisition circuit is ensured even when a high-level signal is input into the circuit.
Description
Technical field
The utility model relates to electric energy meter technical field, is specifically a kind of Acquisition Circuit of electric energy meter quantity of state.
Background technology
Quantity of state collection is the modal function of industrial instrument, and this quantity of state collection is passive input.When use, Remote_in ground connection can be realized to the collection of quantity of state.There is following defect in this Acquisition Circuit: due to operating personnel's misoperation, misconnection enters other high level signal, or the high level signal fault of quantity of state collecting device, all likely punctures the diode on photoelectrical coupler, thereby cause circuit to damage.
Utility model content
The technical problems to be solved in the utility model is, overcomes the defect of above prior art, and a kind of Acquisition Circuit that still can ensure the electric energy meter quantity of state of the normal work of circuit in the time of access high level signal is provided.
The technical solution of the utility model is, a kind of Acquisition Circuit of electric energy meter quantity of state is provided, and comprises photoelectrical coupler E1, switching diode VD1, inductance L 1, resistance R 1, R2, R3, R4 and capacitor C 1, C2, C3; One end of described capacitor C 2 is connected with one end of resistance R 3, as circuit input end; The other end of described capacitor C 2 is connected with negative pole of output end, the common ground end of photoelectrical coupler E1; The other end of described resistance R 3 is connected with one end of resistance R 2, the output head anode of photoelectrical coupler E1; The other end of described resistance R 2 is connected with the first power end; The input anode of described photoelectrical coupler E1 is connected with the negative pole of switching diode VD1, one end of resistance R 1, one end of capacitor C 1; The other end of described resistance R 1 is connected with second source end; The input cathode of described photoelectrical coupler E1 is connected with the positive pole of switching diode VD1, the other end of capacitor C 1, one end of resistance R 4, one end of capacitor C 3; The other end of described capacitor C 3 is connected with common ground end; The other end of described resistance R 4 is connected with one end of inductance L 1, and the other end of described inductance L 1 is Remote_in pin.
The first described power end is+3.3V.
Described second source end is+5V.
Adopt after above structure, the utility model compared with prior art, has the following advantages:
The Acquisition Circuit of the utility model electric energy meter quantity of state in the time of circuit input end input high level, high level will be from switching diode VD1 process, thereby protected the input end of photoelectrical coupler, and then ensured the normal use of circuit.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the Acquisition Circuit of the utility model electric energy meter quantity of state.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, the Acquisition Circuit of a kind of electric energy meter quantity of state of the utility model, comprises photoelectrical coupler E1, switching diode VD1, inductance L 1, resistance R 1, R2, R3, R4 and capacitor C 1, C2, C3; One end of described capacitor C 2 is connected with one end of resistance R 3, as circuit input end YX2/MC2; The other end of described capacitor C 2 is connected with negative pole of output end, the common ground end of photoelectrical coupler E1; The other end of described resistance R 3 is connected with one end of resistance R 2, the output head anode of photoelectrical coupler E1; The other end of described resistance R 2 is connected with the first power end; The input anode of described photoelectrical coupler E1 is connected with the negative pole of switching diode VD1, one end of resistance R 1, one end of capacitor C 1; The other end of described resistance R 1 is connected with second source end; The input cathode of described photoelectrical coupler E1 is connected with the positive pole of switching diode VD1, the other end of capacitor C 1, one end of resistance R 4, one end of capacitor C 3; The other end of described capacitor C 3 is connected with common ground end; The other end of described resistance R 4 is connected with one end of inductance L 1, and the other end of described inductance L 1 is Remote_in pin.
The first described power end is+3.3V.
Described second source end is+5V.
Below be only described with regard to most preferred embodiment of the present utility model, but can not be interpreted as it is limitations on claims.The utility model is not limited only to above embodiment, and its concrete structure allows to change.In every case the various variations of doing in the protection domain of the utility model independent claims are all in protection domain of the present utility model.
Claims (3)
1. an Acquisition Circuit for electric energy meter quantity of state, is characterized in that: comprise photoelectrical coupler E1, switching diode VD1, inductance L 1, resistance R 1, R2, R3, R4 and capacitor C 1, C2, C3; One end of described capacitor C 2 is connected with one end of resistance R 3, as circuit input end; The other end of described capacitor C 2 is connected with negative pole of output end, the common ground end of photoelectrical coupler E1; The other end of described resistance R 3 is connected with one end of resistance R 2, the output head anode of photoelectrical coupler E1; The other end of described resistance R 2 is connected with the first power end; The input anode of described photoelectrical coupler E1 is connected with the negative pole of switching diode VD1, one end of resistance R 1, one end of capacitor C 1; The other end of described resistance R 1 is connected with second source end; The input cathode of described photoelectrical coupler E1 is connected with the positive pole of switching diode VD1, the other end of capacitor C 1, one end of resistance R 4, one end of capacitor C 3; The other end of described capacitor C 3 is connected with common ground end; The other end of described resistance R 4 is connected with one end of inductance L 1, and the other end of described inductance L 1 is Remote_in pin.
2. the Acquisition Circuit of electric energy meter quantity of state according to claim 1, is characterized in that: the first described power end is+3.3V.
3. the Acquisition Circuit of electric energy meter quantity of state according to claim 1, is characterized in that: described second source end is+5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320618178.3U CN203688661U (en) | 2013-09-30 | 2013-09-30 | Acquisition circuit for state variable of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320618178.3U CN203688661U (en) | 2013-09-30 | 2013-09-30 | Acquisition circuit for state variable of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688661U true CN203688661U (en) | 2014-07-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320618178.3U Expired - Lifetime CN203688661U (en) | 2013-09-30 | 2013-09-30 | Acquisition circuit for state variable of electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688661U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953842A (en) * | 2016-07-01 | 2016-09-21 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharge and temperature monitoring device |
| CN105954568A (en) * | 2016-07-01 | 2016-09-21 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharge and temperature monitoring device |
| CN105973292A (en) * | 2016-07-01 | 2016-09-28 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharge and temperature monitoring device |
| CN106019105A (en) * | 2016-07-01 | 2016-10-12 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharging and temperature monitoring device |
| CN106226716A (en) * | 2016-07-01 | 2016-12-14 | 河北箱变电器有限公司 | Monitoring device with the secondary device that shelf depreciation and device for detecting temperature are monitored |
-
2013
- 2013-09-30 CN CN201320618178.3U patent/CN203688661U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953842A (en) * | 2016-07-01 | 2016-09-21 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharge and temperature monitoring device |
| CN105954568A (en) * | 2016-07-01 | 2016-09-21 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharge and temperature monitoring device |
| CN105973292A (en) * | 2016-07-01 | 2016-09-28 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharge and temperature monitoring device |
| CN106019105A (en) * | 2016-07-01 | 2016-10-12 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharging and temperature monitoring device |
| CN106226716A (en) * | 2016-07-01 | 2016-12-14 | 河北箱变电器有限公司 | Monitoring device with the secondary device that shelf depreciation and device for detecting temperature are monitored |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315191 Yinzhou Industrial Park, Zhejiang, Ningbo, Yinzhou District, Ningbo Patentee after: NINGBO SANXING MEDICAL & ELECTRIC Co.,Ltd. Address before: 315131, AUX Industrial Park, Mingguang North Road, Jiangshan Town, Ningbo, Yinzhou District, Zhejiang 1166, China Patentee before: NINGBO SANXING ELECTRIC Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |