CN201637781U - Single-phase intelligent carrier electric energy meter with low power consumption - Google Patents
Single-phase intelligent carrier electric energy meter with low power consumption Download PDFInfo
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- CN201637781U CN201637781U CN2010201073613U CN201020107361U CN201637781U CN 201637781 U CN201637781 U CN 201637781U CN 2010201073613 U CN2010201073613 U CN 2010201073613U CN 201020107361 U CN201020107361 U CN 201020107361U CN 201637781 U CN201637781 U CN 201637781U
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Abstract
The utility model discloses a single-phrase intelligent carrier electric energy meter with low power consumption, comprising a high-frequency filtering anti-interference module, an electric energy metering module, a central processing unit, a data input module, an electric energy meter power circuit, a data output module and a communication module. The single-phrase intelligent carrier electric energy meter with the low power consumption is characterized by further comprising a switch power module, wherein the high-frequency filtering anti-interference module is connected with an input end of the switch power module; an output end of the switch power module is respectively connected with the electric energy metering module, the communication module and the central processing unit through the electric energy meter power circuit; and the electric energy metering module, the communication module, the data input module, and the data output module are respectively accessed to the central processing unit. The single-phrase intelligent carrier electric energy meter with the low power consumption can reduce the volume of the single-phrase carrier meter to be one half of that of a common electric energy meter, and reduce the power consumption by 40 to 50 percent, thus greatly saving energy. The single-phrase intelligent carrier electric energy meter with the low power consumption can endure the work of four hours at 420V voltage without any damage, and also has the advantages of strong capability for suppressing the conduction interference and high reliability.
Description
Technical field
The utility model relates to a kind of single-phase carrier electric energy meter, refers to a kind of single-phase low power-consumption intelligent carrier electric energy meter particularly.
Technical background
Before the utility model proposes, existing carrier electric energy meter adopts transformer-supplied mostly, has so just caused that the power unit volume is excessive, cost is high, and the power consumption of carrier electric energy meter is also very big, generally about 1.5W.At present, having the Switching Power Supply that volume is little, efficient is high, carrying load ability is strong has obtained using widely on some electric equipments, but too high because carrier electric energy meter requires power supply withstand voltage and anti-interference, make Switching Power Supply slowly not be applied on the carrier electric energy meter.
Summary of the invention
The purpose of this utility model will provide a kind of power unit volume little exactly, the single-phase low power-consumption intelligent carrier electric energy meter of power supply low cost of manufacture.
For realizing this purpose, the single-phase low power-consumption intelligent carrier electric energy meter that the utility model is designed, it comprises the High frequency filter immunity module, the electric energy metrical module, CPU (central processing unit), data input module, the electrical energy meter electricity source circuit, data outputting module and communication module, it is characterized in that: it also comprises switch power module, wherein, described High frequency filter immunity module is connected with the input end of switch power module, the output terminal of switch power module is connected to the electric energy metrical module by the electrical energy meter electricity source circuit, communication module and CPU (central processing unit), described electric energy metrical module, communication module, data input module, data outputting module inserts CPU (central processing unit) respectively.
Described CPU (central processing unit) also is connected with data memory module and relay control unit.
Described High frequency filter immunity module comprises voltage dependent resistor (VDR) ZR1, the Conduction Interference filtering circuit, rectifier bridge Dy1, composite thermistor Ry8 and electrochemical capacitor Cy8, wherein, described Conduction Interference filtering circuit is mainly by capacitor C y7, capacitor C y5, common mode inductance Ty1, inductance L y1 and inductance L y2 form, described composite thermistor Ry8 mainly is made up of thermistor R1 and voltage dependent resistor (VDR) ZR2, after described voltage dependent resistor (VDR) ZR1 and the capacitor C y7 parallel connection between the live wire input end Jy6 and zero line input end Jy5 of incoming transport electricity, the live wire input end Jy6 of described alternating current connects the end of capacitor C y5 by first telefault of common mode inductance Ty1, the zero line input end Jy5 of described alternating current connects the other end of capacitor C y5 by second telefault of common mode inductance Ty1, the end of described capacitor C y5 inserts first input port of rectifier bridge Dy1 by inductance L y2, the other end of described capacitor C y5 inserts second input port of rectifier bridge Dy1 by inductance L y1, first delivery outlet of described rectifier bridge Dy1 inserts the end of voltage dependent resistor (VDR) ZR2, second delivery outlet of described rectifier bridge Dy1 inserts the other end of voltage dependent resistor (VDR) ZR2 by thermistor R1, the termination of described voltage dependent resistor (VDR) ZR2 is gone into the positive pole of electrochemical capacitor Cy8, and the other end of described voltage dependent resistor (VDR) ZR2 inserts the negative pole of electrochemical capacitor Cy8.
Described High frequency filter immunity module comprises voltage dependent resistor (VDR) ZR1, the Conduction Interference filtering circuit, rectifier bridge Dy1, composite thermistor Ry8 and electrochemical capacitor Cy8, wherein, described Conduction Interference filtering circuit is mainly by capacitor C y7, capacitor C y5, common mode inductance Ty1, inductance L y1 and inductance L y2 form, described composite thermistor Ry8 mainly is made up of thermistor R1 and voltage dependent resistor (VDR) ZR2, between the live wire input end Jy6 of described voltage dependent resistor (VDR) ZR1 incoming transport electricity and the zero line input end Jy5, the live wire input end Jy6 of alternating current connects the end of voltage dependent resistor (VDR) ZR2, the zero line input end Jy5 of alternating current connects the other end of voltage dependent resistor (VDR) ZR2 by thermistor R1, the termination of described capacitor C y7 is gone into the end of described voltage dependent resistor (VDR) ZR2, the other end of described capacitor C y7 inserts the other end of described voltage dependent resistor (VDR) ZR2, the end of described voltage dependent resistor (VDR) ZR2 connects the end of capacitor C y5 by first telefault of common mode inductance Ty1, the other end of described voltage dependent resistor (VDR) ZR2 connects the other end of capacitor C y5 by second telefault of common mode inductance Ty1, the end of described capacitor C y5 inserts first input port of rectifier bridge Dy1 by inductance L y2, the other end of described capacitor C y5 inserts second input port of rectifier bridge Dy1 by inductance L y1, first delivery outlet of described rectifier bridge Dy1 connects the positive pole of electrochemical capacitor Cy8, and second delivery outlet of described rectifier bridge Dy1 connects the negative pole of electrochemical capacitor Cy8.
Advantage of the present utility model is: half that the setting by Switching Power Supply can be common electric energy meter with single-phase carrier wave meter reduction in bulk, power consumption reduces by 40%～50%, has saved the energy greatly.And electric energy meter can tolerate to work under 420V voltage and not damage in 4 hours, and it is strong that it also has the Conduction Interference of inhibition ability, the advantage that reliability is high.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is the circuit diagram of a kind of High frequency filter immunity module in the utility model.
Fig. 3 is the circuit diagram of another kind of High frequency filter immunity module in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
A kind of single-phase low power-consumption intelligent carrier electric energy meter as shown in Figure 1, it comprises the High frequency filter immunity module, the electric energy metrical module, CPU (central processing unit), data input module, the electrical energy meter electricity source circuit, data outputting module and communication module, it also comprises switch power module, wherein, described High frequency filter immunity module is connected with the input end of switch power module, the output terminal of switch power module is connected to the electric energy metrical module by the electrical energy meter electricity source circuit, communication module and CPU (central processing unit), described electric energy metrical module, communication module, data input module, data outputting module inserts CPU (central processing unit) respectively.Described CPU (central processing unit) also is connected with data memory module and relay control unit.
As shown in Figure 2, in the technique scheme, described High frequency filter immunity module comprises voltage dependent resistor (VDR) ZR1, the Conduction Interference filtering circuit, rectifier bridge Dy1, composite thermistor Ry8 and electrochemical capacitor Cy8, wherein, described Conduction Interference filtering circuit is mainly by capacitor C y7, capacitor C y5, common mode inductance Ty1, inductance L y1 and inductance L y2 form, described composite thermistor Ry8 mainly is made up of thermistor R1 and voltage dependent resistor (VDR) ZR2, after described voltage dependent resistor (VDR) ZR1 and the capacitor C y7 parallel connection between the live wire input end Jy6 and zero line input end Jy5 of incoming transport electricity, the live wire input end Jy6 of described alternating current connects the end of capacitor C y5 by first telefault of common mode inductance Ty1, the zero line input end Jy5 of described alternating current connects the other end of capacitor C y5 by second telefault of common mode inductance Ty1, the end of described capacitor C y5 inserts first input port of rectifier bridge Dy1 by inductance L y2, the other end of described capacitor C y5 inserts second input port of rectifier bridge Dy1 by inductance L y1, first delivery outlet of described rectifier bridge Dy1 inserts the end of voltage dependent resistor (VDR) ZR2, second delivery outlet of described rectifier bridge Dy1 inserts the other end of voltage dependent resistor (VDR) ZR2 by thermistor R1, the termination of described voltage dependent resistor (VDR) ZR2 is gone into the positive pole of electrochemical capacitor Cy8, and the other end of described voltage dependent resistor (VDR) ZR2 inserts the negative pole of electrochemical capacitor Cy8.
As shown in Figure 3, High frequency filter immunity module in the technique scheme can also be designed to, between the live wire input end Jy6 of described voltage dependent resistor (VDR) ZR1 incoming transport electricity and the zero line input end Jy5, the live wire input end Jy6 of alternating current connects the end of voltage dependent resistor (VDR) ZR2, the zero line input end Jy5 of alternating current connects the other end of voltage dependent resistor (VDR) ZR2 by thermistor R1, the termination of described capacitor C y7 is gone into the end of described voltage dependent resistor (VDR) ZR2, the other end of described capacitor C y7 inserts the other end of described voltage dependent resistor (VDR) ZR2, the end of described voltage dependent resistor (VDR) ZR2 connects the end of capacitor C y5 by first telefault of common mode inductance Ty1, the other end of described voltage dependent resistor (VDR) ZR2 connects the other end of capacitor C y5 by second telefault of common mode inductance Ty1, the end of described capacitor C y5 inserts first input port of rectifier bridge Dy1 by inductance L y2, the other end of described capacitor C y5 inserts second input port of rectifier bridge Dy1 by inductance L y1, first delivery outlet of described rectifier bridge Dy1 connects the positive pole of electrochemical capacitor Cy8, and second delivery outlet of described rectifier bridge Dy1 connects the negative pole of electrochemical capacitor Cy8.
Below in conjunction with principle of work of the present utility model the utility model is done further specific description:
Insert anti-interference, anti-attack protection circuit at the alternating current input end, earlier through voltage dependent resistor (VDR) ZR1, it mainly act as anti-lightning surge and attacks.Form a Conduction Interference filtering circuit by capacitor C y7, common mode inductance Ty1, capacitor C y5, inductance L y1, inductance L y2, wherein Ty1 is a common mode inductance, can effectively suppress common-mode signal, inductance and electric capacity are also formed a LC filtering circuit simultaneously, better absorb the conducted interference signal in the circuit.After rectifier bridge DY1 rectification, insert composite thermistor Ry8, by capacitor C y8 filtering, obtain supply voltage again.Composite thermistor Ry8 is made up of voltage dependent resistor (VDR) ZR2 and thermistor R1; voltage dependent resistor (VDR) ZR2 is protecting voltage with voltage clamp when input voltage is 420V; the heat that its heating produces is passed to thermistor R1; thermistor R1 resistance increases; dividing potential drop also increases; output voltage is descended, guarantee the electric energy meter operate as normal.Structure one among this circuit structure such as Fig. 2, also composite thermistor Ry8 can be placed between voltage dependent resistor (VDR) ZR1 and the capacitor C y7 simultaneously, protects filtering more earlier.
After holding circuit, carry out the DC-DC conversion by Switching Power Supply, just obtain direct supply for the each several part circuit working.Because of adopting the Switching Power Supply design, when not carrying out carrier communication, power supply power consumption is very little; When communicating, by the feedback circuit of Switching Power Supply, can increase output current, so promptly satisfied the requirement of carrier communication, realized low-power consumption again.
The content that is not described in detail in this instructions belongs to this area professional and technical personnel's known prior art.
Claims (4)
1. single-phase low power-consumption intelligent carrier electric energy meter, it comprises the High frequency filter immunity module, the electric energy metrical module, CPU (central processing unit), data input module, the electrical energy meter electricity source circuit, data outputting module and communication module, it is characterized in that: it also comprises switch power module, wherein, described High frequency filter immunity module is connected with the input end of switch power module, the output terminal of switch power module is connected to the electric energy metrical module by the electrical energy meter electricity source circuit, communication module and CPU (central processing unit), described electric energy metrical module, communication module, data input module, data outputting module inserts CPU (central processing unit) respectively.
2. a kind of single-phase low power-consumption intelligent carrier electric energy meter according to claim 1, it is characterized in that: described CPU (central processing unit) also is connected with data memory module and relay control unit.
3. a kind of single-phase low power-consumption intelligent carrier electric energy meter according to claim 1 and 2, it is characterized in that: described High frequency filter immunity module comprises voltage dependent resistor (VDR) ZR1, the Conduction Interference filtering circuit, rectifier bridge Dy1, composite thermistor Ry8 and electrochemical capacitor Cy8, wherein, described Conduction Interference filtering circuit is mainly by capacitor C y7, capacitor C y5, common mode inductance Ty1, inductance L y1 and inductance L y2 form, described composite thermistor Ry8 mainly is made up of thermistor R1 and voltage dependent resistor (VDR) ZR2, after described voltage dependent resistor (VDR) ZR1 and the capacitor C y7 parallel connection between the live wire input end Jy6 and zero line input end Jy5 of incoming transport electricity, the live wire input end Jy6 of described alternating current connects the end of capacitor C y5 by first telefault of common mode inductance Ty1, the zero line input end Jy5 of described alternating current connects the other end of capacitor C y5 by second telefault of common mode inductance Ty1, the end of described capacitor C y5 inserts first input port of rectifier bridge Dy1 by inductance L y2, the other end of described capacitor C y5 inserts second input port of rectifier bridge Dy1 by inductance L y1, first delivery outlet of described rectifier bridge Dy1 inserts the end of voltage dependent resistor (VDR) ZR2, second delivery outlet of described rectifier bridge Dy1 inserts the other end of voltage dependent resistor (VDR) ZR2 by thermistor R1, the termination of described voltage dependent resistor (VDR) ZR2 is gone into the positive pole of electrochemical capacitor Cy8, and the other end of described voltage dependent resistor (VDR) ZR2 inserts the negative pole of electrochemical capacitor Cy8.
4. a kind of single-phase low power-consumption intelligent carrier electric energy meter according to claim 1 and 2, it is characterized in that: described High frequency filter immunity module comprises voltage dependent resistor (VDR) ZR1, the Conduction Interference filtering circuit, rectifier bridge Dy1, composite thermistor Ry8 and electrochemical capacitor Cy8, wherein, described Conduction Interference filtering circuit is mainly by capacitor C y7, capacitor C y5, common mode inductance Ty1, inductance L y1 and inductance L y2 form, described composite thermistor Ry8 mainly is made up of thermistor R1 and voltage dependent resistor (VDR) ZR2, between the live wire input end Jy6 of described voltage dependent resistor (VDR) ZR1 incoming transport electricity and the zero line input end Jy5, the live wire input end Jy6 of alternating current connects the end of voltage dependent resistor (VDR) ZR2, the zero line input end Jy5 of alternating current connects the other end of voltage dependent resistor (VDR) ZR2 by thermistor R1, the termination of described capacitor C y7 is gone into the end of described voltage dependent resistor (VDR) ZR2, the other end of described capacitor C y7 inserts the other end of described voltage dependent resistor (VDR) ZR2, the end of described voltage dependent resistor (VDR) ZR2 connects the end of capacitor C y5 by first telefault of common mode inductance Ty1, the other end of described voltage dependent resistor (VDR) ZR2 connects the other end of capacitor C y5 by second telefault of common mode inductance Ty1, the end of described capacitor C y5 inserts first input port of rectifier bridge Dy1 by inductance L y2, the other end of described capacitor C y5 inserts second input port of rectifier bridge Dy1 by inductance L y1, first delivery outlet of described rectifier bridge Dy1 connects the positive pole of electrochemical capacitor Cy8, and second delivery outlet of described rectifier bridge Dy1 connects the negative pole of electrochemical capacitor Cy8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010201073613U CN201637781U (en) | 2010-01-29 | 2010-01-29 | Single-phase intelligent carrier electric energy meter with low power consumption |
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| CN2010201073613U CN201637781U (en) | 2010-01-29 | 2010-01-29 | Single-phase intelligent carrier electric energy meter with low power consumption |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183683A (en) * | 2011-01-24 | 2011-09-14 | 武汉盛帆电子股份有限公司 | Switch power supply-based single-phase low power consumption intelligent electric energy meter |
| CN102183689A (en) * | 2011-03-15 | 2011-09-14 | 武汉盛帆电子股份有限公司 | Single-phase guide-rail-type carrier electric energy meter |
| CN102426289A (en) * | 2011-09-09 | 2012-04-25 | 武汉盛帆电子股份有限公司 | DC-DC-based resistance-capacitance single-phase cost control intelligent electric energy meter |
| CN102539858A (en) * | 2011-12-19 | 2012-07-04 | 深圳市思达仪表有限公司 | Single-phase electric energy meter circuit applying non-isolated switch power supply scheme |
| CN102654532A (en) * | 2011-05-31 | 2012-09-05 | 杭州万工科技有限公司 | Method for reducing power consumption of electric energy metering chip |
| CN107783074A (en) * | 2017-09-28 | 2018-03-09 | 云南电网有限责任公司电力科学研究院 | Bandwidth carrier detection system of electric energy meter and detection method |
| CN112234592A (en) * | 2019-12-20 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | Lightning surge protection circuit |
-
2010
- 2010-01-29 CN CN2010201073613U patent/CN201637781U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183683A (en) * | 2011-01-24 | 2011-09-14 | 武汉盛帆电子股份有限公司 | Switch power supply-based single-phase low power consumption intelligent electric energy meter |
| CN102183689A (en) * | 2011-03-15 | 2011-09-14 | 武汉盛帆电子股份有限公司 | Single-phase guide-rail-type carrier electric energy meter |
| CN102654532A (en) * | 2011-05-31 | 2012-09-05 | 杭州万工科技有限公司 | Method for reducing power consumption of electric energy metering chip |
| CN102654532B (en) * | 2011-05-31 | 2014-09-03 | 万高(杭州)科技有限公司 | Method for reducing power consumption of electric energy metering chip |
| CN102426289A (en) * | 2011-09-09 | 2012-04-25 | 武汉盛帆电子股份有限公司 | DC-DC-based resistance-capacitance single-phase cost control intelligent electric energy meter |
| CN102539858A (en) * | 2011-12-19 | 2012-07-04 | 深圳市思达仪表有限公司 | Single-phase electric energy meter circuit applying non-isolated switch power supply scheme |
| CN107783074A (en) * | 2017-09-28 | 2018-03-09 | 云南电网有限责任公司电力科学研究院 | Bandwidth carrier detection system of electric energy meter and detection method |
| CN112234592A (en) * | 2019-12-20 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | Lightning surge protection circuit |
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| CF01 | Termination of patent right due to non-payment of annual fee |