CN208636355U - SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters - Google Patents
SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters Download PDFInfo
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Abstract
The utility model provides a kind of SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters, including metering chip and SOC single-chip microcontroller, first signal acquisition terminal of metering chip is connected with the first manganese copper diverter, its second signal collection terminal is connected with neutral voltage sample circuit, and output end is connected with the first signal acquisition terminal of SOC single-chip microcontroller；The second signal collection terminal of SOC single-chip microcontroller is connected with the second manganese copper diverter, and third signal acquisition terminal is connected with hot voltage sample circuit；It further include a resistance-capacitance depressurization power supply, resistance-capacitance depressurization power supply first voltage supply terminal is connected with metering chip feeder ear, resistance-capacitance depressurization power supply second voltage supply side is connected with SOC single-chip microcontroller feeder ear, neutral voltage sample circuit is connected with the zero line side of resistance-capacitance depressurization power supply, and hot voltage sample circuit is connected with the zero line of resistance-capacitance depressurization power supply.The electric energy meter can effectively prevent the illegal stealing of user, have many advantages, such as it is easy to operate, electric power utilization efficiency can be improved.
Description
Technical field
The utility model relates to electrical measurement fields, and in particular to a kind of SCM Based single-phase double anti-electricity-theft electricity of copper-manganese
It can table.
Background technique
Electric energy meter is the instrument for measuring electric energy, also known as kilowatt-hour meter, energy meter, kilowatt-hour table, is capable of measuring various electricity
The instrument of amount.With the continuous development of electronic technology, electric energy meter to measurement range, display information and communicating requirement also increasingly
It is high.In fact, resident's stealing is all a very universal phenomenon either in developed regions still in poverty-stricken area,
Utilities Electric Co. can be seriously affected and normally collect the electricity charge, brought about great losses to power supply company.Guide Electricity customers legitimate
Electricity consumption improves the utilization efficiency of electric power resource, avoids Utilities Electric Co. from loss, is current urgent problem.
Utility model content
In view of the above shortcomings of the prior art, the purpose of this utility model is that: how designing one kind can prevent
The electric energy meter of the illegal stealing of user carries out two power loop values by loading real-time monitoring to firewire and zero curve double loop
Comparison switches to larger circuit and carries out power when the performance number in one of circuit is greater than the preset value in another circuit
Value is cumulative, the electric energy meter have many advantages, such as it is easy to operate, electric power utilization efficiency can be improved.
The utility model uses the following technical solution:
A kind of SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters, including metering chip and SOC single-chip microcontroller, metering core
First signal acquisition terminal of piece is connected with the first manganese copper diverter, and the second signal collection terminal of metering chip is connected with neutral voltage
Sample circuit, the output end of metering chip are connected with the first signal acquisition terminal of SOC single-chip microcontroller, the second signal of SOC single-chip microcontroller
Collection terminal is connected with the second manganese copper diverter, and the third signal acquisition terminal of SOC single-chip microcontroller is connected with hot voltage sample circuit, the
One manganese copper diverter is for connecing zero curve, and the second manganese copper diverter is for line of starting to exchange fire；It further include a resistance-capacitance depressurization power supply, resistance-capacitance depressurization
Power supply first voltage supply terminal is connected with metering chip feeder ear, resistance-capacitance depressurization power supply second voltage supply side and SOC single-chip microcontroller
Feeder ear connection, the neutral voltage sample circuit are connected with the zero line side of resistance-capacitance depressurization power supply, the hot voltage sampling electricity
Road is connected with the zero line of resistance-capacitance depressurization power supply.
Further, which further includes LCD display module, and LCD display module and the first communication ends of SOC single-chip microcontroller connect
It connects.
Further, the LCD display module uses LCD display J764436PTRP-02.
Further, which further includes storage circuit, storage circuit and the second communication ends two-way communication of SOC single-chip microcontroller
Connection.
Further, which further includes calibration impulse output circuit, calibration impulse output circuit and SOC single-chip microcontroller control
End connection processed.
Further, the metering chip uses single-phase measurement chip BL0930E.
Further, the SOC single-chip microcontroller uses single-phase multifunctional SOC chip V9821S.
Further, the storage circuit includes storage chip M24C04-RMN6TP, resistance R25, resistance R26 and capacitor
The clock signal terminal of C27, chip M24C04-RMN6TP are followed by+3.3V power supply through resistance R26, and data signal end is through resistance R25
It is followed by+3.3V power supply, write-protect end ground connection, power supply termination+3.3V power supply, power end is grounded after capacitor C27, ground
Location end and ground terminal are grounded.
Further, the neutral voltage sample circuit includes chip BL0930E, resistance R5, resistance R6, resistance R7, electricity
Hinder R8, resistance R11, resistance R21, resistance R22, resistance R23, resistance R24, resistance R28, resistance R29, capacitor C17, capacitor C20,
Capacitor C21, capacitor C22, capacitor C23, capacitor C24, capacitor C25, capacitor C26, winding displacement J7 and photoelectrical coupler EL816D, chip
The vdd terminal of BL0930E connects A+5V power supply, and the end V2P is successively after resistance R5, resistance R6, resistance R7, resistance R8 and resistance R11
Ground connection, the end V2P are successively grounded after resistance R5, resistance R6, resistance R7, resistance R8 and capacitor C17, and the end V2P is through capacitor C20
After be grounded, the end V2P is grounded after resistance R23, and the end V2P is successively followed by its end V2N, V2P through capacitor C20 and capacitor C21
End is successively followed by its end V2N through capacitor C20 and resistance R24, and the end V2P is successively followed by its end V2N through resistance R23 and capacitor C21,
Its end V2P is successively followed by its end V2N through resistance R23 and resistance 24；Run in line J3's through resistance R21 in the end V1N of chip BL0930E
Second pin, the end V1N are successively followed by its end V1P through capacitor C22 and capacitor C23, and the end V1N is grounded through capacitor C22, V1P
End is grounded through capacitor C23, and the end V1P is run in the third pin of line J3 through resistance R22, the first pin ground connection of winding displacement J3；Chip
The end GND, the end SCF, the end NC and the end G of BL0930E is grounded, and the end VREF is grounded through capacitor C25, and the end VREF is through capacitor C25
Connect its end SCF, the end S0 and the end S1 connect A+3.3V power supply, and the end NC and the end G second are drawn with photoelectrical coupler EL816D
Foot connection, the first pin that the end CF meets photoelectrical coupler EL816D through resistance R28 connect, and the end CF connects photoelectricity through capacitor C24
The first pin of coupler EL816D connects；The third pin of photoelectrical coupler EL816D is grounded, photoelectrical coupler EL816D's
Third draws the 4th pin that foot meridian capacitor C26 meets photoelectrical coupler EL816D, and the 4th pin of photoelectrical coupler EL816D is through electricity
Resistance R29 meets power vd D.
Compared with the prior art, the utility model has the advantage that
In single-phase double copper-manganese anti-electricity-theft electric energy meters provided by the utility model, electric energy is carried out to zero curve part with metering chip
Metering and parameter monitoring, the data that then metering chip will acquire are converted to electrical energy pulse and are transferred to SOC monolithic through light-coupled isolation
Machine carries out electrical energy measurement and parameter monitoring to firewire part with SOC single-chip microcontroller, carries out to two firewire, zero curve power loop values
Comparison is then switched to a biggish circuit when one of power loop value is greater than the 12.5% of another power loop value
It is cumulative to carry out performance number, and carries out liquid crystal circulation display, avoids because user is shorted firewire or shunting mode is taken to steal
The problem of electric bring metering is inaccurate or cannot measure, can be realized the damage of electrical energy measurement caused by preventing the illegal stealing of user
It loses, is conducive to power department and collects user's stealing bring electricity charge loss, properties of product meet IEC62053-21 standard requirements.
Detailed description of the invention
Fig. 1 is the control block diagram of anti-electricity-theft electric energy meter in the utility model embodiment；
Fig. 2 is the circuit diagram of neutral voltage sample circuit in the utility model embodiment；
Fig. 3 is the circuit diagram of storage circuit in the utility model embodiment；
Fig. 4 is the circuit diagram of LCD display module in the utility model embodiment；
Fig. 5 is the circuit diagram of resistance-capacitance depressurization power supply in the utility model embodiment；
Fig. 6 is the circuit diagram of calibration impulse output circuit in the utility model embodiment；
Fig. 7 is the pin figure of SOC chip V9821S in the utility model embodiment；
Fig. 8 is the circuit diagram of SOC chip V9821S peripheral circuit in the utility model embodiment.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solutions of the utility model.Following embodiment is only
For clearly illustrating the technical solution of the utility model, therefore it is intended only as example, and cannot be used as a limitation and limit this reality
With novel protection scope.
Embodiment:
Referring to Fig.1~Fig. 8, a kind of SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters, including metering chip and SOC
Single-chip microcontroller, the first signal acquisition terminal of metering chip are connected with the first manganese copper diverter, the second signal collection terminal of metering chip
It is connected with neutral voltage sample circuit, the output end of metering chip is connected with the first signal acquisition terminal of SOC single-chip microcontroller, and SOC is mono-
The second signal collection terminal of piece machine is connected with the second manganese copper diverter, and the third signal acquisition terminal of SOC single-chip microcontroller is connected with firewire
Voltage sampling circuit, the first manganese copper diverter is for connecing zero curve, and the second manganese copper diverter is for line of starting to exchange fire；It further include capacitance-resistance drop
Voltage source, resistance-capacitance depressurization power supply first voltage supply terminal are connected with metering chip feeder ear, and resistance-capacitance depressurization power supply second voltage supplies
It is connected to end with SOC single-chip microcontroller feeder ear, the neutral voltage sample circuit is connected with the zero line side of resistance-capacitance depressurization power supply, described
Hot voltage sample circuit is connected with the zero line of resistance-capacitance depressurization power supply.The electric energy meter further includes LCD display module, and LCD is shown
Module is connected with the first communication ends of SOC single-chip microcontroller, for realizing the display of electric energy measurement data.The electric energy meter further includes storage electricity
Road, storage circuit and SOC single-chip microcontroller the second communication ends two-way communication link, for realizing the storage of electric energy measurement data.The electricity
Energy table further includes calibration impulse output circuit, and calibration impulse output circuit is connected with SOC single-chip microcontroller control terminal, for realizing electric energy
The error checking of continuous data.When it is implemented, the LCD display module uses LCD display J764436PTRP-02.It is described
Metering chip uses single-phase measurement chip BL0930E.The SOC single-chip microcontroller uses single-phase multifunctional SOC chip V9821S.Its
In, the current sample and electrical isolation in zero curve circuit are carried out with the first manganese copper diverter, are carried out firewire with two manganese copper diverters and are returned
The current sample and electrical isolation on road, and two measurement loops can normally starting metering under the conditions of 4 ‰ Ib.Wherein, institute
State metering chip and be all made of same group of resistance-capacitance depressurization power module with single-chip microcontroller and be powered, and realize two groups of power supplies every
From.Specifically, SOC single-chip microcontroller has firewire function of measuring.
Referring to Fig. 2, above-mentioned neutral voltage sample circuit includes chip BL0930E, resistance R5, resistance R6, resistance R7, resistance
R8, resistance R11, resistance R21, resistance R22, resistance R23, resistance R24, resistance R28, resistance R29, capacitor C17, capacitor C20, electricity
Hold C21, capacitor C22, capacitor C23, capacitor C24, capacitor C25, capacitor C26, winding displacement J7 and photoelectrical coupler E1, photoelectrical coupler
E1 uses EL816D, and the vdd terminal of chip BL0930E connects A+5V power supply, the end V2P successively through resistance R5, resistance R6, resistance R7,
It is grounded after resistance R8 and resistance R11, the end V2P is successively followed by through resistance R5, resistance R6, resistance R7, resistance R8 and capacitor C17
Ground, the end V2P are grounded after capacitor C20, and the end V2P is grounded after resistance R23, and the end V2P is successively through capacitor C20 and capacitor
C21 is followed by its end V2N, and the end V2P is successively followed by its end V2N through capacitor C20 and resistance R24, and the end V2P is successively through resistance R23
It is followed by its end V2N with capacitor C21, the end V2P is successively followed by its end V2N through resistance R23 and resistance 24；The V1N of chip BL0930E
End is run in the second pin of line J3 through resistance R21, and the end V1N is successively followed by its end V1P, V1N through capacitor C22 and capacitor C23
End is grounded through capacitor C22, and the end V1P is grounded through capacitor C23, and the end V1P is run in the third pin of line J3 through resistance R22, winding displacement
The first pin of J3 is grounded；The end GND, the end SCF, the end NC and the end G of chip BL0930E is grounded, and the end VREF connects through capacitor C25
Ground, the end VREF connect its end SCF through capacitor C25, and the end S0 and the end S1 connect A+3.3V power supply, and the end NC and the end G are and photoelectricity
The second pin of coupler EL816D connects, and the first pin that the end CF meets photoelectrical coupler EL816D through resistance R28 connects,
The first pin that the end CF meets photoelectrical coupler EL816D through capacitor C24 connects；The third pin of photoelectrical coupler EL816D is grounded,
The third of photoelectrical coupler EL816D draws the 4th pin that foot meridian capacitor C26 meets photoelectrical coupler EL816D, photoelectrical coupler
The 4th pin of EL816D meets power vd D through resistance R29.Wherein, the node and SOC chip between capacitor C17 and resistance R8
The end UAP of V9821S connects, and the 4th pin of photoelectrical coupler EL816D is connected with the end PCF1 of SOC chip V9821S.
In above-mentioned anti-electricity-theft electric energy meter, the current sample of zero curve and firewire uses manganese copper diverter mode, that is, passes through electric current
The manganese copper diverter for flowing through fixed resistance value generates one and is sent into the meter with the proportional sampled voltage signal of current value
It measures in chip；The voltage sampling circuit uses electric resistance partial pressure mode, that is, after passing sequentially through resistance R5, R6, R7, R8, R23 partial pressure
The voltage signal of sampling is sent into metering chip, completes to export firewire electrical energy measurement and power pulse by the special chip.
The integrated chip dual function of metering chip and single-chip microcontroller, by sampling mode identical with voltage sample with neutral line current
Realize firewire electrical energy measurement and parameter monitoring, and by IO input port realize the isolation pulse that BL0930E chip is exported into
Row zero curve electric energy power measurement realizes the comparison of two firewire, zero curve power loop values, and the performance number in a wherein circuit
Greater than another circuit 12.5% when, be switched to a biggish circuit and carry out performance number cumulative measurement.
Referring to Fig. 3, above-mentioned storage circuit includes storage chip M24C04-RMN6TP, resistance R25, resistance R26 and capacitor
The clock signal terminal of C27, chip M24C04-RMN6TP are followed by+3.3V power supply through resistance R26, and data signal end is through resistance R25
It is followed by+3.3V power supply, write-protect end ground connection, power supply termination+3.3V power supply, power end is grounded after capacitor C27, ground
Location end and ground terminal are grounded.Wherein, the SDA of the data signal end of storage chip M24C04-RMN6TP and SOC chip V9821S
End connection.
Referring to Fig. 5, the circuit of above-mentioned resistance-capacitance depressurization power supply includes voltage stabilizing chip U2, voltage stabilizing chip U4, diode D1, two poles
Pipe D3, zener diode VD1, zener diode VD2, varistor RV1, resistance RX1, capacitor C9, capacitor C10, capacitor C11,
Capacitor C12, capacitor C13, capacitor C14, capacitor C19, capacitor C28, capacitor C30 and capacitor CX1, the Vout termination of voltage stabilizing chip U4
The ground terminal of A+5V, voltage stabilizing chip U4 are grounded, and the ground terminal of voltage stabilizing chip U4 meets A+5V through capacitor C30, voltage stabilizing chip U4's
The end Vint is grounded through capacitor C11, and the end Vint of voltage stabilizing chip U4 is grounded through capacitor C9, the end Vint of voltage stabilizing chip U4 and diode
The cathode of D3 connects, and the anode of diode D3 is successively followed by the anode of diode D1, diode D3 through resistance RX1 and capacitor CX1
Anode be reversely grounded through zener diode VD2, diode D1 anode be reversely grounded through zener diode VD1, diode D1
Cathode be grounded through capacitor C10, the cathode of diode D1 is grounded through capacitor C12, the end Vint of voltage stabilizing chip U2 and diode D1
Cathode connection, the ground terminal ground connection of voltage stabilizing chip U2, the end Vout of voltage stabilizing chip U2 is grounded through capacitor C13, voltage stabilizing chip U2
The end Vout be grounded through capacitor C14, the end Vout of voltage stabilizing chip U2 is grounded through capacitor C19, and the end Vout of voltage stabilizing chip U2 is through electricity
Hold C28 ground connection, the Vout of voltage stabilizing chip U2 terminates VDD, and A+5V is successively grounded through capacitor C30 and varistor RV1.Wherein, surely
Pressure chip U2 voltage stabilizing chip U4 is all made of L78L05, zener diode VD1 and zener diode VD2 and is all made of SMBJ12A, pressure-sensitive
Resistance RV1 uses CNR14D681.Specifically, one group of resistance-capacitance depressurization power supply of metering chip and SOC one-chip machine common and sampling electricity
Resistance, and realize that Live line Zero line is isolated.
In above-mentioned anti-electricity-theft electric energy meter, resistance-capacitance depressurization power circuit is mainly used for as BL0930E, V9821S and peripheral circuit
The 5V DC power supply of two groups of electrical isolations needed for providing, which includes fire-wire interfaces XL, zero line interface GNDA, transition
Diode VD1, VD2, for resistance RX1, the capacitor CX1 in the capacitance-resistance voltage reduction circuit of mains, rectifier diode D1, D3,
Filter capacitor C9~C12, three-terminal regulator chip U2, U4.Varistor RV1 is connected between fire-wire interfaces and zero line interface,
As anti-lightning strike protection.
Referring to Fig. 6, above-mentioned calibration impulse output circuit include resistance R1, resistance R2, resistance R3, resistance R4, resistance R14,
Resistance R15, resistance R18, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, capacitor C6, capacitor C7, capacitor C8, winding displacement
The end VDC1N of J1, winding displacement J2 and winding displacement J4, chip V9821S are grounded through resistance R2, and the end VDC1N of chip V9821S is through capacitor C1
Ground connection, the end VDC1N of chip V9821S meets VDD through resistance R1；The end MODE of chip V9821S connects+3.3V, chip through resistance R3
The end MODE of V9821S is grounded through capacitor C3；The end RST of chip V9821S connects+3.3V, the end RST of chip V9821S through resistance R4
It is grounded through capacitor C6；The end KEY1 of chip V9821S meets+3.3V through resistance R14, the KEY1 termination winding displacement J1's of chip V9821S
First connecting pin, the second connection end ground connection of winding displacement J1；The end CLR of chip V9821S connects+3.3V, chip through resistance R15
The first connecting pin of the CLR termination winding displacement J4 of V9821S, the second connection end ground connection of winding displacement J4；The end KEY2 of chip V9821S passes through
Resistance R18 connects+3.3V, the first connecting pin of the KEY1 termination winding displacement J2 of chip V9821S, the second connection end ground connection of winding displacement J2；
+ 3.3V is grounded through capacitor C2, and+3.3V is grounded through capacitor C4；The end DVCC of chip V9821S is grounded through capacitor C5, chip V9821S
The end DVCC be grounded through capacitor C7；The end REF of chip V9821S is grounded through capacitor C8.
Referring to Fig. 7, crystal oscillator X1 is connected between the first pin and the 48th pin of chip V9821S.
Referring to Fig. 8, above-mentioned SOC chip V9821S peripheral circuit include resistance R12, resistance R13, resistance R16, resistance R17,
Resistance R19, capacitor C15, capacitor C16, capacitor C18, photodiode V1, photodiode V2 and photoelectrical coupler E2, photoelectricity
Coupler E2 uses EL816D, and the end IAP of chip V9821S connects the end IL+ through resistance R12, and the end IAP of chip V9821S is through capacitor
C16 ground connection, the end IAP of chip V9821S connect the end IAN through capacitor C15, and the end IAN of chip V9821S connects the end IL- through resistance R13,
The end IAN of chip V9821S is grounded through capacitor C18；The LED-ERR of chip V9821S is successively through resistance R19 and photodiode V2
Ground connection；The ACT-PUL of chip V9821S meets the first pin of photoelectrical coupler E2, the ACT-PUL of chip V9821S through resistance R16
The second pin of photoelectrical coupler E2 is successively connect through resistance R17 and photodiode V1, the second pin of photoelectrical coupler E2 connects
Ground, the third pin of photoelectrical coupler E2 meet P+, and the 4th pin of photoelectrical coupler E2 meets P-.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to embodiment, those skilled in the art should understand that, it can be practical to this
Novel technical solution is modified or replaced equivalently, without departing from the objective and range of technical solutions of the utility model,
It should all cover in the protection scope of the utility model.
Claims (9)
1. a kind of SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters, it is characterised in that: including metering chip and SOC monolithic
Machine, the first signal acquisition terminal of metering chip are connected with the first manganese copper diverter, the second signal collection terminal connection of metering chip
There is neutral voltage sample circuit, the output end of metering chip is connected with the first signal acquisition terminal of SOC single-chip microcontroller, SOC single-chip microcontroller
Second signal collection terminal be connected with the second manganese copper diverter, the third signal acquisition terminal of SOC single-chip microcontroller is connected with hot voltage
Sample circuit, the first manganese copper diverter is for connecing zero curve, and the second manganese copper diverter is for line of starting to exchange fire；It further include resistance-capacitance depressurization electricity
Source, resistance-capacitance depressurization power supply first voltage supply terminal are connected with metering chip feeder ear, resistance-capacitance depressurization power supply second voltage supply side
It is connected with SOC single-chip microcontroller feeder ear, the neutral voltage sample circuit is connected with the zero line side of resistance-capacitance depressurization power supply, the firewire
Voltage sampling circuit is connected with the zero line of resistance-capacitance depressurization power supply.
2. SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters according to claim 1, which is characterized in that the electric energy
Table further includes LCD display module, and LCD display module is connected with the first communication ends of SOC single-chip microcontroller.
3. SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters according to claim 2, which is characterized in that described
LCD display module uses LCD display J764436PTRP-02.
4. SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters according to claim 1, which is characterized in that the electric energy
Table further includes storage circuit, storage circuit and SOC single-chip microcontroller the second communication ends two-way communication link.
5. SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters according to claim 1, which is characterized in that the electric energy
Table further includes calibration impulse output circuit, and calibration impulse output circuit is connected with SOC single-chip microcontroller control terminal.
6. SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters according to claim 1, which is characterized in that the meter
It measures chip and uses single-phase measurement chip BL0930E.
7. SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters according to claim 1, which is characterized in that described
SOC single-chip microcontroller uses single-phase multifunctional SOC chip V9821S.
8. SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters according to claim 4, which is characterized in that described to deposit
Storage road includes storage chip M24C04-RMN6TP, resistance R25, resistance R26 and capacitor C27, chip M24C04-RMN6TP's
Clock signal terminal is followed by+3.3V power supply through resistance R26, and data signal end is followed by+3.3V power supply, write-protect through resistance R25
End ground connection, power supply termination+3.3V power supply, power end are grounded after capacitor C27, and address end and ground terminal are grounded.
9. SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters according to claim 1, which is characterized in that described zero
Line voltage sample circuit includes chip BL0930E, resistance R5, resistance R6, resistance R7, resistance R8, resistance R11, resistance R21, electricity
Hinder R22, resistance R23, resistance R24, resistance R28, resistance R29, capacitor C17, capacitor C20, capacitor C21, capacitor C22, capacitor
C23, capacitor C24, capacitor C25, capacitor C26, winding displacement J7 and photoelectrical coupler EL816D, the vdd terminal of chip BL0930E meet A+5V
Power supply, the end V2P are successively grounded after resistance R5, resistance R6, resistance R7, resistance R8 and resistance R11, and the end V2P is successively through electricity
It is grounded after resistance R5, resistance R6, resistance R7, resistance R8 and capacitor C17, the end V2P is grounded after capacitor C20, and the end V2P is through resistance
It is grounded after R23, the end V2P is successively followed by its end V2N through capacitor C20 and capacitor C21, and the end V2P is successively through capacitor C20 and resistance
R24 is followed by its end V2N, and the end V2P is successively followed by its end V2N through resistance R23 and capacitor C21, and the end V2P is successively through resistance R23
Its end V2N is followed by with resistance 24；The end V1N of chip BL0930E is run in the second pin of line J3 through resistance R21, and the end V1N is successively
It is followed by its end V1P through capacitor C22 and capacitor C23, the end V1N is grounded through capacitor C22, and the end V1P is grounded through capacitor C23, V1P
End is run in the third pin of line J3 through resistance R22, the first pin ground connection of winding displacement J3；The end GND of chip BL0930E, the end SCF,
The end NC and the end G are grounded, and the end VREF is grounded through capacitor C25, and the end VREF connects its end SCF, the end S0 and the end S1 through capacitor C25
A+3.3V power supply is connect, the end NC is connected with the second pin of photoelectrical coupler EL816D with the end G, and the end CF is through resistance R28
The first pin connection of photoelectrical coupler EL816D is connect, the end CF connects the first pin of photoelectrical coupler EL816D through capacitor C24
Connection；The third pin of photoelectrical coupler EL816D is grounded, and the third of photoelectrical coupler EL816D draws foot meridian capacitor C26 and connects photoelectricity
4th pin of the 4th pin of coupler EL816D, photoelectrical coupler EL816D meets power vd D through resistance R29.
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| CN201821283995.7U CN208636355U (en) | 2018-08-10 | 2018-08-10 | SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters |
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| CN201821283995.7U CN208636355U (en) | 2018-08-10 | 2018-08-10 | SCM Based single-phase double copper-manganese anti-electricity-theft electric energy meters |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2716888C1 (en) * | 2019-06-24 | 2020-03-17 | федеральное государственное автономное образовательное учреждение высшего образования "Северо-Кавказский федеральный университет" | METHOD OF DETERMINING THE LOCATION AND MAGNITUDE OF UNCONTROLLED POWER CONSUMPTION IN AN ELECTRICAL NETWORK OF 0,4 kV |
| CN114487529A (en) * | 2022-01-17 | 2022-05-13 | 无锡市恒通电器有限公司 | Single-phase electric energy meter with instantaneous value electricity stealing and electric leakage prevention detection function and with time scale/phase angle |
| CN114545076A (en) * | 2022-02-28 | 2022-05-27 | 无锡市恒通电器有限公司 | Single-phase guide rail type intelligent electric energy meter supporting index management |
-
2018
- 2018-08-10 CN CN201821283995.7U patent/CN208636355U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2716888C1 (en) * | 2019-06-24 | 2020-03-17 | федеральное государственное автономное образовательное учреждение высшего образования "Северо-Кавказский федеральный университет" | METHOD OF DETERMINING THE LOCATION AND MAGNITUDE OF UNCONTROLLED POWER CONSUMPTION IN AN ELECTRICAL NETWORK OF 0,4 kV |
| CN114487529A (en) * | 2022-01-17 | 2022-05-13 | 无锡市恒通电器有限公司 | Single-phase electric energy meter with instantaneous value electricity stealing and electric leakage prevention detection function and with time scale/phase angle |
| CN114545076A (en) * | 2022-02-28 | 2022-05-27 | 无锡市恒通电器有限公司 | Single-phase guide rail type intelligent electric energy meter supporting index management |
| CN114545076B (en) * | 2022-02-28 | 2023-12-05 | 无锡市恒通电器有限公司 | Single-phase guide rail type intelligent electric energy meter supporting index management |
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