CN2773696Y - Capacity-resistance voltage devided electronic intelligent three phase kilowatt meter - Google Patents
Capacity-resistance voltage devided electronic intelligent three phase kilowatt meter Download PDFInfo
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- CN2773696Y CN2773696Y CN 200420104775 CN200420104775U CN2773696Y CN 2773696 Y CN2773696 Y CN 2773696Y CN 200420104775 CN200420104775 CN 200420104775 CN 200420104775 U CN200420104775 U CN 200420104775U CN 2773696 Y CN2773696 Y CN 2773696Y
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Abstract
The utility model relates to a triphase and electronic intelligent electric energy meter of a resistance-capacitance and voltage division type, which is composed of a nixietube, an LED lamp, a metering unit, an SCM control unit, a power source power supply unit, an IC card socket, a relay, a shell, etc., wherein the metering unit, the SCM control unit, the power source power supply unit and a display unit of the nixietube are integrated on the same PCB panel, the IC card socket is welded on a PCB control panel by a data wire, the entire PCB panel is installed in the shell of a plastic electric energy meter, and then, the entire PCB panel is fixed by tapping screws. The utility model is characterized in that the power source power supply unit outputs power supply voltage through a rectification circuit, a filtering circuit and a voltage regulator circuit after inputted AC voltage is divided by a resistor and a capacitor. As the utility model adopts the impedance voltage division of the resistor and the resistance-capacitance voltage division of the capacitor as a power source power supply unit for an entire machine, the utility model has the advantages that the weight of the entire machine is light; compared with an IC card electric energy meter with a transformer type power supply, the electric energy meter of the utility model has light weight, transportation cost is lowered, the power consumption of each circuit is low, and the power consumption of the entire machine is lower than 0.8 W.
Description
Technical field
The utility model belongs to a kind of electric energy metrical product, is a kind of resistance-capacitance differential pressure type three-phase electronic intelligent electric energy meter specifically.
Background technology
The power supply of IC-card three phases electronic energy meter all adopts transformer type in the market, so just has the defective that will take into full account the power consumption of electric energy meter in the design and increase the weight of whole electric energy.
Summary of the invention
The purpose of this utility model provides a kind of design power consumption that reduces the IC-card electric energy meter, reduces the resistance-capacitance differential pressure type three-phase electronic intelligent electric energy meter of unnecessary energy loss, to overcome above-mentioned deficiency.
To achieve these goals, the utility model is made of charactron, LED lamp, metering and Single-chip Controlling unit, power supply power supply unit, IC-card seat, relay, shell etc., and wherein metering units, Single-chip Controlling unit, power supply power supply unit and charactron display unit are integrated on the pcb board.The IC-card seat is welded on the PCB control panel by data line, whole pcb board is contained in the sleeving plastic ammeter shell, fix with self-tapping screw, be characterized in: the power supply power supply unit be input three-phase alternating voltage respectively by resistor and capacitor dividing potential drop after rectification, filtering and mu balanced circuit are exported supply voltage.
Above-mentioned power supply power supply unit is made of resistor R 1～R12, capacitor C1～C6, C15～C18, C21, diode D4～D9, stabilivolt D1～D3, D10～D16 and accurate voltage stabilizer T, wherein:
A, the three-phase alternating voltage of input is a three-phase four-wire system, wherein three-phase firewire passes through the resistor R 10 and the capacitor C16 of series connection respectively, the resistor R 11 and the capacitor C17 of series connection, the resistor R 12 of series connection is connected with the three-phase full wave rectifier circuit input end that diode D4～D9 forms with capacitor C18, three-phase full wave rectifier circuit is exported one tunnel DC voltage, be parallel with series capacitors C15 respectively between the positive and negative two ends of DC voltage output, C21 and series capacitors C1, C3, input zero line and series capacitors C15, C21 and series capacitors C1, the series connection point of C3 is connected, and the input zero line is as the 0V point of power supply power supply unit;
B, three-phase full wave rectifier circuit are exported one road dc voltage electrode and are parallel with the stabilivolt D10～D12 that connects with input between the zero line;
C, the base stage that a triode BG3 arranged link to each other with the input zero line by accurate voltage stabilizer T major loop, and join with the end of resistor R 2, R3, its collector links to each other with the three-phase full wave rectifier circuit output dc voltage is anodal, and join with the other end of resistor R 2, its emitter as the power supply power supply unit+the 5V output point, the control end of accurate voltage stabilizer T links to each other with the other end of resistor R 3, and joins with an end of resistor R 4, the other end of resistor R 4 with import zero line and be connected;
Be parallel with two capacitor C4, C2 respectively between d, above-mentioned+5V output point and the 0V point;
E, 0V point links to each other with resistor R 7, R8, R9 one end by the stabilivolt D13～D16 of series connection, and by stabilivolt D1, D2, D3 ground connection, as microcontroller power supply end VCC export respectively by the end of resistor R 7, R8, R9 for the other end of resistor R 7, R8, R9;
F, also have the base stage of a triode BG1 to link to each other with the collector of triode BG2 by resistor R 1, collector and microcontroller power supply end VCC join, emitter is connected with the 0V point, and the base stage of triode BG2 is connected with the control end of single-chip microcomputer by resistor R 5, its grounded emitter.
Be parallel with protecting component ZR1, a ZR2, ZR3 respectively between the alternating voltage live wire end of the every input mutually of above-mentioned power supply power supply unit and the zero line of input.
Also be connected with capacitor C5, a C6 respectively between above-mentioned power supply power supply unit output terminal VCC and the earth terminal.
Be connected with a resistor R 6 between the control end of above-mentioned power supply power supply unit output terminal VCC and single-chip microcomputer
Because the utility model employing resistive impedance and electric capacity capacitive reactance dividing potential drop are as the power supply power supply unit of complete machine, make the utility model have following advantage: 1, complete machine is in light weight: the IC-card electric energy meter table of comparing the transformer type power supply is in light weight, reduces trucking costs; 2, circuit power consumption is low: Overall Power Consumption is less than 0.8W.
Description of drawings
Accompanying drawing is the utility model circuit theory diagrams.
Embodiment
Further specify the utility model below in conjunction with accompanying drawing.
After the utility model power utilization resistive impedance and the electric capacity capacitive reactance dividing potential drop, the alternating voltage of the step-down that obtains, carry out the full-bridge half-wave rectification by commutation diode, positive and negative half-wave utilizes electrochemical capacitor filtering respectively, obtains required positive negative dc voltage by the voltage stabilizing of common stabilivolt circuit again.
Principle of work of the present utility model is: add the 220V three-phase alternating voltage after power resistor R10, R11, R12 and CBB capacitor C 16, C17, C18 step-down, carry out the three phase full bridge half-wave rectification by commutation diode D4, D5, D6, D7, D8, D9, positive and negative half-wave utilizes electrochemical capacitor C15, C21, C3 filtering respectively, obtains the required direct current of metering circuit+5V voltage by stabilivolt D10, D11, D12 and accurate voltage regulator circuit voltage stabilizing; By stabilivolt D1, D2, the required DC voltage VCC of D3 single chip machine controlling circuit; Single-chip Controlling is partly utilized power supply VCC-GND, and metering section utilizes power supply+5V-0V.Magnetic latching relay operation voltage and single-chip microcomputer altogether, 0V-GND provides by voltage
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, a kind of resistance-capacitance differential pressure type three-phase electronic intelligent electric energy meter, by charactron, the LED lamp, metering and Single-chip Controlling unit, the power supply power supply unit, the IC-card seat, relay, formations such as shell, metering units wherein, the Single-chip Controlling unit, power supply power supply unit and charactron display unit are integrated on the pcb board, the IC-card seat is welded on the PCB control panel by data line, whole pcb board is contained in the sleeving plastic ammeter shell, fix with self-tapping screw, it is characterized in that: the power supply power supply unit be the alternating voltage of input by resistor and capacitor dividing potential drop after rectification, filtering and mu balanced circuit and export supply voltage.
2, resistance-capacitance differential pressure type three-phase electronic intelligent electric energy meter as claimed in claim 1, it is characterized in that: the power supply power supply unit by resistor (R1～R12), capacitor (C1～C6, C15～C18, C21), diode (D4～D9), stabilivolt (D1～D3, D10～D16) and accurate voltage stabilizer (T) constitute, wherein:
A, the three-phase alternating voltage of input is a three-phase four-wire system, wherein three-phase firewire passes through the resistor (R10) and the capacitor (C16) of series connection respectively, the resistor (R11) and the capacitor (C17) of series connection, (D4～D9) the three-phase full wave rectifier circuit input end of composition is connected the resistor (R12) of series connection with diode with capacitor (C18), three-phase full wave rectifier circuit is exported one tunnel DC voltage, be parallel with series capacitors (C15 respectively between the positive and negative two ends of DC voltage output, C21) and series capacitors (C1, C3), input zero line and series capacitors (C15, C21) and series capacitors (C1, C3) series connection point is connected, and the input zero line is as the 0V point of power supply power supply unit;
B, three-phase full wave rectifier circuit are exported one road dc voltage electrode and input and are parallel with the stabilivolt of connecting (D10～D12) between the zero line;
C, the base stage that a triode (BG3) arranged link to each other with the input zero line by accurate voltage stabilizer (T) major loop, and join with an end of resistor (R2, R3), its collector links to each other with the three-phase full wave rectifier circuit output dc voltage is anodal, and join with the other end of resistor (R2), its emitter as the power supply power supply unit+the 5V output point, the control end of accurate voltage stabilizer (T) links to each other with the other end of resistor (R3), and join with an end of resistor (R4), the other end of resistor (R4) is connected with the input zero line;
Be parallel with two capacitors (C4, C2) between d, above-mentioned+5V output point and the 0V point respectively;
E, 0V point is by the stabilivolt (D13～D16) link to each other with resistor (R7, R8, a R9) end of series connection, by stabilivolt (D1, D2, D3) ground connection, as microcontroller power supply end VCC export respectively by an end of resistor (R7, R8, R9) for the other end of resistor (R7, R8, R9);
F, also have the base stage of a triode (BG1) to link to each other with the collector of triode (BG2) by resistor (R1), collector and microcontroller power supply end VCC join, emitter is connected with the 0V point, the base stage of triode (BG2) is connected with the control end of single-chip microcomputer by resistor (R5), its grounded emitter;
Be parallel with protecting component ZR1, a ZR2, ZR3 respectively between the alternating voltage live wire end of the every input mutually of power supply power supply unit and the zero line of input.
3, resistance-capacitance differential pressure type three-phase electronic intelligent electric energy meter as claimed in claim 2 is characterized in that: also be connected with a capacitor (C5, C6) between power supply power supply unit output terminal VCC and the earth terminal respectively.
4, resistance-capacitance differential pressure type three-phase electronic intelligent electric energy meter as claimed in claim 2 is characterized in that: be connected with a resistor (R6) between the control end of power supply power supply unit output terminal VCC and single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420104775 CN2773696Y (en) | 2004-12-31 | 2004-12-31 | Capacity-resistance voltage devided electronic intelligent three phase kilowatt meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420104775 CN2773696Y (en) | 2004-12-31 | 2004-12-31 | Capacity-resistance voltage devided electronic intelligent three phase kilowatt meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2773696Y true CN2773696Y (en) | 2006-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420104775 Expired - Fee Related CN2773696Y (en) | 2004-12-31 | 2004-12-31 | Capacity-resistance voltage devided electronic intelligent three phase kilowatt meter |
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| Country | Link |
|---|---|
| CN (1) | CN2773696Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237809A (en) * | 2011-07-08 | 2011-11-09 | 江苏林洋电子股份有限公司 | Switching power circuit for three-phase intelligent electric energy meter |
| CN102338816A (en) * | 2011-06-17 | 2012-02-01 | 杭州炬华科技股份有限公司 | Resistance-capacitance power supply for tri-manganin electric energy meter |
| CN102508508A (en) * | 2011-11-22 | 2012-06-20 | 昆明高驰科技有限公司 | Programmable power circuit of meter bus slave |
| CN102820776A (en) * | 2012-01-19 | 2012-12-12 | 鲁东大学 | Capacitance step-down power supply applied to pointer power meter |
| CN109030973A (en) * | 2018-05-15 | 2018-12-18 | 淮阴师范学院 | Smart grid non-intrusion type resident load observation circuit and system |
| CN113030835A (en) * | 2021-02-05 | 2021-06-25 | 宁波三星医疗电气股份有限公司 | Electric energy meter metering method |
-
2004
- 2004-12-31 CN CN 200420104775 patent/CN2773696Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338816A (en) * | 2011-06-17 | 2012-02-01 | 杭州炬华科技股份有限公司 | Resistance-capacitance power supply for tri-manganin electric energy meter |
| CN102338816B (en) * | 2011-06-17 | 2013-06-05 | 杭州炬华科技股份有限公司 | Resistance-capacitance power supply for tri-manganin electric energy meter |
| CN102237809A (en) * | 2011-07-08 | 2011-11-09 | 江苏林洋电子股份有限公司 | Switching power circuit for three-phase intelligent electric energy meter |
| CN102237809B (en) * | 2011-07-08 | 2015-11-18 | 江苏林洋电子股份有限公司 | A kind of switching power circuit for three-phase intelligent electric energy meter |
| CN102508508A (en) * | 2011-11-22 | 2012-06-20 | 昆明高驰科技有限公司 | Programmable power circuit of meter bus slave |
| CN102820776A (en) * | 2012-01-19 | 2012-12-12 | 鲁东大学 | Capacitance step-down power supply applied to pointer power meter |
| CN109030973A (en) * | 2018-05-15 | 2018-12-18 | 淮阴师范学院 | Smart grid non-intrusion type resident load observation circuit and system |
| CN113030835A (en) * | 2021-02-05 | 2021-06-25 | 宁波三星医疗电气股份有限公司 | Electric energy meter metering method |
| CN113030835B (en) * | 2021-02-05 | 2022-04-26 | 宁波三星医疗电气股份有限公司 | Electric energy meter metering method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060419 Termination date: 20111231 |