CN114545076A - Single-phase guide rail type intelligent electric energy meter supporting index management - Google Patents
Single-phase guide rail type intelligent electric energy meter supporting index management Download PDFInfo
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- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
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Abstract
The invention provides a single-phase guide rail type intelligent electric energy meter supporting index management, which comprises: the power supply circuit comprises a power supply circuit, a power measurement module, an SOC chip circuit, a communication circuit and an LCD control unit, wherein the output end of the power supply circuit is connected with the SOC chip circuit, the communication circuit and the LCD control unit and used for supplying power to each module; the power measurement module inputs commercial power, and the output end of the power measurement module is connected with the SOC chip circuit; utilize the signal of telecommunication of electric power measurement module measurement user side commercial power, and with this signal of telecommunication upload to SOC chip circuit and handle and electric energy measurement, SOC chip circuit output termination memory cell, with data storage to memory chip in, SOC chip circuit and LCD the control unit are connected, drive LCD the control unit and realize the demonstration of basic information, SOC chip circuit still is connected with the communication unit, realize the transmission of data, adopt this patent application, realize long-range meter of copying, the manpower consumption of meter has been reduced to the manual work, the user can freely select the intelligent experience of control power consumption, reach conscious energy-conserving power saving.
Description
Technical Field
The invention relates to the field of intelligent electric meters, in particular to a single-phase guide rail type intelligent electric energy meter supporting index management.
Background
The electric energy meter is an electric meter for short, and is used for measuring electric energy, a traditional electric meter adopts a manual meter reading mode, so that the manual consumption is high, the data has hysteresis, and a user cannot implement monitoring management and obtain real-time electric quantity.
Contents of the invention
The invention provides a single-phase guide rail type intelligent electric energy meter supporting index management, which can realize the functions of electric energy metering and remote electric meter reading of a user, and the specific technical scheme is as follows: the method comprises the following steps: the power supply circuit comprises a power supply circuit, a power measurement module, an SOC chip circuit, a communication circuit and an LCD control unit, wherein the output end of the power supply circuit is connected with the SOC chip circuit, the communication circuit and the LCD control unit and used for supplying power to each module; the electric power measuring module inputs commercial power, and the output end of the electric power measuring module is connected with the SOC chip circuit; the SOC chip circuit is used for measuring electric energy, the output end of the SOC chip circuit is connected with the LCD control unit and the storage unit, and the SOC chip circuit is further connected with the communication unit to achieve data transmission.
Further, power supply circuit adopts alternating current-direct current conversion switch power supply circuit, power supply circuit input termination commercial power, power supply circuit includes: the power conversion device comprises a power conversion chip U5, a transformer TR1 and a voltage stabilization chip U6, wherein the power conversion chip U5 adopts PN8175, an S pin of the power conversion chip U5 is grounded and is connected with an emitter of an output end of an optical coupler OP6, an EN/UV pin is connected with a collector of an output end of the optical coupler OP6, and a D pin is connected with the 3 end of a primary winding end of the transformer TR 1; the 4 ends of the primary winding end of the transformer TR1 input commercial power signals processed by a rectifying and filtering circuit, the 1 end of the primary winding end of the transformer TR1 is grounded, the 2 end of the primary winding end of the transformer TR1 is connected with the anode of the diode D3, the cathode of the diode D3 is connected with 3.6v voltage, the anode of the capacitor E3 and the inductor RS0, the cathode of the capacitor E3 is grounded and is connected with the other end of the RS0 to be connected with the capacitor C7, the other end of the inductor RS0 is connected with the Vin pin of the voltage stabilizing chip U6, and the Vo pin of the voltage stabilizing chip U6 outputs 3.3v voltage; the output voltage G485 and the output voltage 5 of the secondary winding end 6 of the transformer TR1 are connected with the diode rectifying circuit, the output end of the rectifying circuit is connected with the resistor R12, the anode of the capacitor E5 and the inductor RS1 to output the voltage V485, the cathode of the capacitor E5 outputs the voltage G485, and the capacitor C9 is connected between the cathode of the capacitor E5 and the inductor RS 1; the other end of the resistor R12 is connected with the positive electrode of the input end of the optocoupler OP6, a resistor R13 is connected between the positive electrode and the negative electrode of the input end of the optocoupler OP6, the negative electrode of the input end of the optocoupler OP6 is connected with the K electrode of the controllable silicon Q1 and one end of the resistor R26, the A electrode of the controllable silicon Q1 is connected with a voltage G485, the R electrode of the controllable silicon Q1 is connected with a resistor R29, a resistor R36 and a resistor R37, the other end of the resistor R29 is connected with a voltage V485, the resistors R36 and R37 are connected in parallel, and the other end of the resistors R36 and R37 is connected with the voltage G485.
Further, the rectifier filter circuit connected to the 4 terminal of the primary winding terminal of the transformer TR1 includes: diode D1, diode D6, electric capacity E1, diode D1 and D6 are connected in series, the positive pole of diode D1 connects commercial power L line, the negative pole of diode D6 connects electric capacity E1 positive pole, electric capacity E1's negative pole ground connection, the last fuse PTC1 that is connected with of commercial power L line.
Furthermore, a protection circuit is connected between the D pin of the power conversion chip U5 and the 4 terminal of the primary winding terminal of the transformer TR1, the protection circuit includes a diode D2, a capacitor C5, and resistors R11 and R16 connected in series, the anode of the diode D2 is connected to the D pin of the power conversion chip U5, the cathode of the diode D5 is connected to one terminals of the capacitor C5 and the resistor R11, and the other terminal of the capacitor C5 is connected to the other terminal of the resistor R16 and the 4 terminal of the primary winding terminal of the transformer TR 1.
Furthermore, a chip U1 of the SOC chip circuit adopts a G80F923 chip, a VDD pin of the chip U1 inputs 3.3v working voltage, pins I1N, I1P, VN and VP which are connected with the power measurement module, pins RX and TX which are connected with the communication unit, a chip U1 drives an LCD control unit through SEG and COM pins, a chip U1 is also connected with a storage chip U2 through SCL and SDA pins, and a chip U1 is also connected with the metering pulse circuit through a PF pin.
Further, the power measurement module includes: the device comprises an inductor RS2, a resistor string and an RC filter circuit, wherein the inductor RS2 is positioned on the N line of the mains supply, the resistor string is formed by connecting a plurality of resistors in series, one end of the resistor string is connected with the inductor in series, the other end of the resistor string is connected with the RC filter circuit and a VP pin, and the other end of the RC filter circuit is grounded; the resistor R8 is connected with the capacitor C4 in parallel, one end of the resistor R8 is grounded, and the other end of the resistor R8 is connected with the VN pin; the commercial power I-line is filtered by a resistor R9 and a capacitor C1 and then is connected with an I1P pin; the commercial power I + line is connected with the pin I1N after passing through the resistor R10 and the capacitor C2.
Further, the communication unit includes: the device comprises a 485 communication unit and a GPRS communication unit, wherein the 485 communication unit is connected with RXD1 and TXD1 pins of a chip U1; the GPRS communication unit is connected with RXD0 and TXD0 pins of a chip U1.
Further, the 485 communication unit includes: the optical couplers OP2, OP3 and the 485 communication chip U4, the 485 communication chip U4 adopts HYM3085, and a VCC pin is connected with a voltage V485;
the positive pole of the input end of the optical coupler OP2 is connected with the voltage V485, the negative pole of the input end is connected with the RO pin of the 485 communication chip U4, the collector of the output end is connected with 3.3V voltage through the resistor R30, the collector of the output end is connected with the RXD1 pin of the chip U1, and the emitter of the output end is grounded; the positive electrode of the input end of the optical coupler OP3 is connected with 3.3V voltage through a pull-up resistor R31, the negative electrode of the input end is connected with the TXD1 pin of the chip U1, the collector of the output end is connected with the voltage V485, and the emitter of the output end is connected with the DI pin of the communication chip U4; a resistor R34 is connected between the pin A of the 485 communication chip U4 and the pin VCC, the pin B of the 485 communication chip U4 is grounded, and a TVS tube is connected between the pins A, B.
Further, the GPRS communication unit comprises: the optical coupler OP4 with 6 pins and the optical coupler OP5 with 6 pins are connected, the anode of the input end of the optical coupler OP4 is connected with 3.3V voltage through a resistor R27, the cathode of the input end is connected with a TXD0 pin signal of a chip U1, the 6 pins of the output end of the optical coupler OP4 are connected with voltage V485, 5 pins output W-RXD signals, and 4 pins are grounded; the positive electrode of the input end of the optical coupler OP5 is connected with a voltage V485 through a resistor R45, the negative electrode of the optical coupler inputs a W-RXD signal, the 6 pins of the output end are connected with a 3.3V voltage, the 5 pins output signals to the RXD0 pins of the chip U1, and the 4 pins are grounded.
Furthermore, the memory chip U2 adopts a 24C256 chip, the VCC pin is connected to 3.3v voltage, the SCL pin is connected to the pull-up resistor R24 and the SCL pin of the chip U1, and the SDA pin is connected to the pull-up resistor R25 and the SDA pin of the chip U1.
Further, the metering pulse circuit includes: the pulse lamp D7, opto-coupler OP1, pulse lamp D7 positive pole connect 3.3v voltage through resistance R23, the negative pole connects PF pin and the resistance R38 of chip U1, the other termination of resistance R38 connects the negative pole of opto-coupler OP1 input end, the anodal 3.3v voltage of connection of opto-coupler OP1 input end, output pulse metering signal.
Compared with the prior art, the invention has the following beneficial effects: adopt this patent application, realize the power supply to each module through power supply circuit, and utilize the signal of telecommunication of electric power measurement module measurement user side commercial power, and with this signal of telecommunication upload to SOC chip circuit and handle and the electric energy measurement, and can be with data storage to memory chip in, SOC chip circuit drive LCD the display that basic information realized, and realize the check-up through measurement pulse circuit, realize long-range reading with data through the communication unit simultaneously, have long-range ammeter of copying, the intelligent of freely selecting the control power consumption is experienced, the manpower consumption of the manual work ammeter of copying has also been reduced.
Drawings
FIG. 1 is a schematic diagram of the framework of this patent;
FIG. 2 is a circuit diagram of a power circuit module according to the present disclosure;
FIG. 3 is a schematic circuit diagram of a power measurement module according to the present disclosure;
FIG. 4 is a schematic diagram of an SOC chip circuit;
fig. 5 is a circuit diagram of a 485 communication unit;
FIG. 6 is a circuit schematic diagram of a GPRS communication unit
FIG. 7 is a schematic circuit diagram of an LCD control unit;
FIG. 8 is a circuit schematic of a memory chip;
fig. 9 is a schematic diagram of a metering pulse circuit.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1, the present patent includes: the method comprises the following steps: the power supply circuit, the power measurement module, the SOC chip circuit, the communication circuit, the LCD control unit and the keys, wherein the output end of the power supply circuit is connected with the SOC chip circuit, the communication circuit and the LCD control unit and used for supplying power to each functional module; the power measurement module inputs commercial power, the commercial power is input by a user side, and the output end of the power measurement module is connected with the SOC chip circuit and used for sampling an electric signal of the user side commercial power in real time and feeding the electric signal back to the SOC chip circuit; the SOC chip circuit realizes operation starting, resetting and zero clearing through keys, receives data fed back by the power measurement module, and performs signal conversion and electric energy metering; the output end of the SOC chip circuit is connected with the LCD control unit, and information such as power consumption, surplus and the like is displayed by using an LCD display screen; the output end of the SOC chip circuit is connected with the storage unit, and meanwhile, historical data can be stored in the storage unit; the SOC chip circuit is also connected with the communication unit to realize remote ammeter reading.
As shown in fig. 2, the power circuit adopts an ac-dc conversion switch power circuit, the input end of the power circuit is connected to the commercial power at the user end, and the power circuit includes: rectifier filter circuit, power conversion chip U5, transformer TR1, steady voltage chip U6 are connected with fuse PTC1 on the commercial power L line, and the commercial power is inputed to transformer TR1 primary end after rectifier filter circuit handles, and rectifier filter circuit includes: diode D1, diode D6, electric capacity E1, diode D1 and D6 are connected in series, the positive pole of diode D1 connects commercial power L line, the negative pole of diode D6 connects 4 ends of electric capacity E1 positive pole and transformer TR 1's primary winding end, the negative pole of electric capacity E1 is ground connection.
The power conversion chip U5 adopts PN8175, the S pin of the power conversion chip U5 is grounded and connected with the emitter of the output end of the optical coupler OP6, the EN/UV pin is connected with the collector of the output end of the optical coupler OP6, the D pin is connected with the 3 end of the primary winding end of the transformer TR1 and the anode of the diode D2, the cathode of the diode D2 is connected with the resistors R11 and R16 which are connected in series, the resistors R11 and R16 are connected in series and then connected in parallel with the capacitor C5, and the diodes D2, R11, R16 and the capacitor C5 form a protection circuit which is arranged between the D pin of the power conversion chip U5 and the 4 end of the primary winding end of the transformer TR 1.
The 4 ends of the primary winding ends of the transformer TR1 input commercial power signals processed by the rectifying and filtering circuit, the 1 end of the primary winding end of the transformer TR1 is grounded, the 2 end of the primary winding end of the transformer TR1 is connected with the anode of the diode D3, the cathode of the diode D3 is connected with 3.6v voltage, the anode of the capacitor E3 and the inductor RS0, the cathode of the capacitor E3 is grounded, the other end of the capacitor RS0 is connected with the capacitor C7, the other end of the inductor RS0 is connected with the Vin pin of the voltage stabilizing chip U6, the Vo pin of the voltage stabilizing chip U6 is connected with the anodes of the capacitor C8 and the capacitor E4 and outputs 3.3v voltage, the other end of the capacitor C8 is connected with the cathode of the capacitor E4 and grounded, the voltage stabilizing chip U6 adopts an HT7533 voltage stabilizing chip and can step down and stabilize the 3.6v voltage and output 3.3v voltage.
The output voltage G485 and 5 at the secondary winding end 6 of the transformer TR1 are connected with a diode rectifying circuit, the rectifying circuit comprises two diodes D5 and D6 which are connected in parallel, the anodes of the diodes D5 and D6 are connected with the secondary winding end 6 of the transformer TR1, the cathodes of the diodes D5 and D6 are connected with one end of a resistor R12, the anode of a capacitor E5 and one end of an inductor RS1, the other end of the inductor RS1 is connected with a capacitor C9, the output voltage V485 is output, and the cathode of the capacitor E5 and a capacitor C9 are connected with the output voltage G485;
5v voltage is further input to one end of the resistor R12, the other end of the resistor R12 is connected with the anode of the input end of the optocoupler OP6, the resistor R13 is connected between the anode and the cathode of the input end of the optocoupler OP6, the cathode of the input end of the optocoupler OP6 is connected with the K pole of the thyristor Q1, and the A pole of the thyristor Q1 is connected with the voltage G485; the negative electrode of the input end of the optocoupler OP6 is also connected with one end of a resistor R26, two ends of the resistor R26 are respectively connected with one ends of capacitors C10 and C11, and the other end of the capacitor C10 and one end of the capacitor C11 are connected with the R pole of a thyristor Q1; the R pole of the controllable silicon Q1 is also connected with one end of a resistor R29, a resistor R36 and one end of a resistor R37, the other end of the resistor R29 is connected with a voltage V485, the resistors R36 and R37 are connected in parallel, and the other ends of the resistors R36 and R37 are connected with a voltage G485.
The power supply circuit is adopted to convert the alternating current commercial power of the user side into 3.3V voltage and voltage V485 so as to adapt to the power supply requirements of a plurality of modules.
As shown in fig. 3, the power measuring module includes: the power supply comprises an inductor RS2, a resistor string and an RC filter circuit, wherein the inductor RS2 is positioned on a commercial power N line, the resistor string is formed by connecting a plurality of resistors in series, the RC filter circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R14, a resistor R15, a resistor R17, a resistor R18 and a resistor R19 which are sequentially connected in series, the resistor R1 is connected with the inductor RS2, the other end of the resistor R19 is connected with the RC filter circuit and an SOC chip circuit, the RC filter circuit comprises a resistor R7 and a capacitor C3 which are connected in parallel, and the other end of the resistor R7 and the capacitor C3 are grounded; the resistor R8 is connected with the capacitor C4 in parallel, one end of the resistor R8 is grounded, and the other end of the resistor R8 is connected with the SOC chip circuit; the commercial power I-line is filtered by a resistor R9 and a capacitor C1 and then is connected with the SOC chip circuit; the commercial power I + line is connected with the SOC chip circuit after passing through the resistor R10 and the capacitor C2, and the circuit is used for sampling current or voltage signals of the commercial power at the user side and feeding the current or voltage signals back to the SOC chip circuit.
As shown in fig. 4, a G80F923 chip with an 8051 core embedded therein is adopted as a chip U1 of the SOC chip circuit, a VDD pin of the chip U1 inputs a 3.3v operating voltage filtered by C12, AGND and DGND pins are grounded, an AVCC pin is grounded after passing through a capacitor C15, an output signal of a VOUT pin is filtered by a capacitor C27, the VOUT pin is connected with a resistor R21 and a capacitor C13 which are connected in series, and the other end of the capacitor is grounded; a crystal oscillator X1 is connected between XTAL2 and XTAL 1; the RESET pin is connected with the other end of the resistor R21, and the chip U1 RESETs when the RESET pin keeps a low level; the external voltage of 3.6v is divided by resistors R20 and R22 which are connected in series in sequence, the other end of the resistor R22 is grounded, the resistor R22 is connected with a capacitor C19 in parallel, and a pin P2.3 of the chip U1 is connected with the potential voltage at the common joint of the resistors R20 and R22.
The chip U1 is also connected to other functional modules: the power measuring module is connected with pins I1N, I1P, VN and VP, the communication unit is connected with pins RX and TX, the chip U1 drives the LCD control unit shown in FIG. 7 through SEG and COM pins, the chip U1 is also connected with the memory chip U2 through SCL and SDA pins, and the chip U1 is also connected with the metering pulse circuit through PF pin.
The electric energy meter can be connected with electric quantity control equipment through a communication unit, and energy consumption indexes and energy consumption index early warning values of each month are set in the electric quantity control equipment;
the communication unit can adopt a 485 communication unit and a GPRS communication unit, remote meter reading can be realized by adopting 485 communication or GPRS communication, the energy consumption index can be monitored in time, and when the energy consumption reaches an early warning value set by the index, such as the energy consumption reaches 80% of the index, the electric energy meter can send out related reminding; when the energy consumption exceeds the index set value, the charge of the excess part of the electric quantity can be automatically counted according to the set electric quantity data, and the index metering is automatically restarted at the beginning of each month and month, so that the method is suitable for places such as schools and the like needing index management.
As shown in fig. 5, the 485 communication unit includes: the optical couplers OP2, OP3 and 485 communication chips U4 and 485 communication chips U4 adopt HYM3085, VCC pins of the optical couplers are connected with voltage V485 and SGND pins and grounded, A pins and B pins of the 485 communication chips U4 are differential signal terminals for receiving and sending, TVS tubes are connected between A, B pins, resistors R34 and B pins are connected between the A pins and the VCC pins and grounded through resistors R35; an RO pin DI pin of a 485 communication chip U4 is respectively used as the output of a receiver and the input end of a driver, wherein the RO pin is connected with the negative electrode of the input end of an optical coupler OP2, the positive electrode of the input end of an optical coupler OP2 is connected with a voltage V485 after passing through a resistor R32, the collector of the output end of the optical coupler OP2 is connected with 3.3V voltage through a resistor R30, the collector of the output end is connected with an RXD1 pin of the chip U1, and the emitter of the output end is grounded; the DI pin is connected with one end of a resistor R33, the other end of the resistor R33 is connected with an emitter at the output end of an optical coupler OP3 and a collector at the output end of the optical coupler OP3 and is connected with a voltage V485, the positive electrode of the input end of the optical coupler OP3 is connected with a 3.3V voltage through a pull-up resistor R31, and the negative electrode of the input end is connected with a TXD1 pin of a chip U1; the RE pin and the DE pin are respectively used as receiving and sending enabling ends and are respectively connected to the other end of the resistor R33.
As shown in fig. 6, the GPRS communication unit includes: the optical coupler OP4 with 6 pins and the optical coupler OP5 with 6 pins are connected, the anode of the input end of the optical coupler OP4 is connected with 3.3V voltage through a resistor R27, the cathode of the input end is connected with a TXD0 pin signal of the chip U1, the voltage V485 is connected with the 6 pin of the output end of the optical coupler OP4, and a resistor R44 are connected between the 5 pin and the 6 pin to output a W-RXD signal and the voltage G485 is connected with the 4 pin; the positive electrode of the input end of the optical coupler OP5 is connected with a voltage V485 through a resistor R45, the negative electrode of the optical coupler inputs a W-RXD signal, the 6 pin of the output end is connected with a 3.3V voltage, the 6 pin and the 5 pin are connected with a resistor R28, the 5 pin outputs a signal to an RXD0 pin of the chip U1, and the 4 pin is grounded.
As shown in fig. 8, the memory chip U2 adopts a 24C256 chip, the VCC pin is connected to 3.3v, the SCL pin is connected to the pull-up resistor R24 and the SCL pin of the chip U1, the SDA pin is connected to the pull-up resistor R25 and the SDA pin of the chip U1, and the other ends of the resistor R24 and the resistor R25 are respectively connected to 3.3 v.
The metering pulse circuit shown in fig. 9 includes: pulse lamp D7, opto-coupler OP1, pulse lamp D7 positive pole connects 3.3v voltage through resistance R23, the negative pole connects PF pin and resistance R38 of chip U1, another termination opto-coupler OP1 input negative pole of resistance R38, opto-coupler OP1 input positive pole connects 3.3v voltage, output pulse metering signal, can be used to the check-up, adopt emitting diode also to play the effect of active, idle output suggestion simultaneously.
Adopt this patent application, realize the power supply to each module through power supply circuit to utilize the electric signal of electric power measurement module measurement user side commercial power, and with this electric signal upload to SOC chip circuit and handle and the electric energy measurement, and can be with data storage to memory chip in, SOC chip circuit drive LCD the display that the basic information was realized to SOC chip circuit, and realize the check-up through measurement pulse circuit, realize long-range reading with data through the communication unit simultaneously.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, which shall fall within the scope of the appended claims.
Claims (10)
1. The utility model provides a support index management's single-phase guide tracked intelligent ammeter which characterized in that includes: the power supply circuit comprises a power supply circuit, a power measurement module, an SOC chip circuit, a communication circuit and an LCD control unit, wherein the output end of the power supply circuit is connected with the SOC chip circuit, the communication circuit and the LCD control unit and used for supplying power to all the modules; the electric power measurement module inputs commercial power, and the output end of the electric power measurement module is connected with the SOC chip circuit; the SOC chip circuit is used for measuring electric energy, the output end of the SOC chip circuit is connected with the LCD control unit and the storage unit, and the SOC chip circuit is further connected with the communication unit to achieve data transmission.
2. The single-phase guide rail type intelligent electric energy meter supporting index management according to claim 1, characterized in that: the power supply circuit adopts alternating current-direct current conversion switch power supply circuit, power supply circuit input termination commercial power, power supply circuit includes: the power conversion device comprises a power conversion chip U5, a transformer TR1 and a voltage stabilization chip U6, wherein the power conversion chip U5 adopts PN8175, an S pin of the power conversion chip U5 is grounded and is connected with an emitter of an output end of an optical coupler OP6, an EN/UV pin is connected with a collector of the output end of the optical coupler OP6, and a D pin is connected with the 3 end of a primary winding end of the transformer TR 1; the 4 ends of the primary winding end of the transformer TR1 input commercial power signals processed by a rectifying and filtering circuit, the 1 end of the primary winding end of the transformer TR1 is grounded, the 2 end of the primary winding end of the transformer TR1 is connected with the anode of the diode D3, the cathode of the diode D3 is connected with 3.6v voltage, the anode of the capacitor E3 and the inductor RS0, the cathode of the capacitor E3 is grounded and is connected with the other end of the RS0 to be connected with the capacitor C7, the other end of the inductor RS0 is connected with the Vin pin of the voltage stabilizing chip U6, and the Vo pin of the voltage stabilizing chip U6 outputs 3.3v voltage; the output voltage G485 and the output voltage 5 of the secondary winding end 6 of the transformer TR1 are connected with the diode rectifying circuit, the output end of the rectifying circuit is connected with the resistor R12, the anode of the capacitor E5 and the inductor RS1 to output the voltage V485, the cathode of the capacitor E5 outputs the voltage G485, and the capacitor C9 is connected between the cathode of the capacitor E5 and the inductor RS 1; the other end of the resistor R12 is connected with the positive electrode of the input end of the optocoupler OP6, a resistor R13 is connected between the positive electrode and the negative electrode of the input end of the optocoupler OP6, the negative electrode of the input end of the optocoupler OP6 is connected with the K electrode of the controllable silicon Q1 and one end of the resistor R26, the A electrode of the controllable silicon Q1 is connected with a voltage G485, the R electrode of the controllable silicon Q1 is connected with a resistor R29, a resistor R36 and a resistor R37, the other end of the resistor R29 is connected with a voltage V485, the resistors R36 and R37 are connected in parallel, and the other end of the resistors R36 and R37 is connected with the voltage G485.
3. The intelligent single-phase guide rail type electric energy meter supporting index management according to claim 2, characterized in that: the rectifier filter circuit connected to the 4-terminal of the primary winding terminal of the transformer TR1 includes: diode D1, diode D6, electric capacity E1, diode D1 and D6 are connected in series, the positive pole of diode D1 connects commercial power L line, the negative pole of diode D6 connects electric capacity E1 positive pole, electric capacity E1's negative pole ground connection, the last fuse PTC1 that is connected with of commercial power L line.
4. The single-phase guide rail type intelligent electric energy meter supporting index management according to claim 2, characterized in that: still connect protection circuit between the D pin of power conversion chip U5 and the 4 ends of transformer TR 1's primary winding end, protection circuit includes diode D2, electric capacity C5, the resistance R11 and the R16 of series connection, and the positive pole of diode D2 connects the D pin of power conversion chip U5, and the negative pole connects electric capacity C5 and resistance R11 one end, and the other end connection resistance R16 of electric capacity C5 and the 4 ends of transformer TR 1's primary winding end.
5. The single-phase guide rail type intelligent electric energy meter supporting index management according to claim 2, characterized in that: a G80F923 chip is adopted as a chip U1 of the SOC chip circuit, a VDD pin of a chip U1 inputs 3.3v working voltage, pins I1N, I1P, VN and VP of the chip U1 are connected with a power measurement module, pins RX and TX of the chip U1 are connected with a communication unit, the chip U1 drives an LCD control unit through SEG and COM pins, the chip U1 is further connected with a storage chip U2 through SCL and SDA pins, and the chip U1 is further connected with a metering pulse circuit through a PF pin.
6. The single-phase guide rail type intelligent electric energy meter supporting index management according to claim 5, characterized in that: the power measurement module includes: the device comprises an inductor RS2, a resistor string and an RC filter circuit, wherein the inductor RS2 is positioned on the N line of the mains supply, the resistor string is formed by connecting a plurality of resistors in series, one end of the resistor string is connected with the inductor in series, the other end of the resistor string is connected with the RC filter circuit and a VP pin, and the other end of the RC filter circuit is grounded; the resistor R8 is connected with the capacitor C4 in parallel, one end of the resistor R8 is grounded, and the other end of the resistor R8 is connected with the VN pin; the commercial power I-line is filtered by a resistor R9 and a capacitor C1 and then is connected with an I1P pin; the commercial power I + line is connected with the pin I1N after passing through the resistor R10 and the capacitor C2.
7. The single-phase guide rail type intelligent electric energy meter supporting index management according to claim 5, characterized in that: the communication unit adopts the 485 communication unit, the 485 communication unit includes: the optical couplers OP2, OP3 and the 485 communication chip U4, the 485 communication chip U4 adopts HYM3085, and a VCC pin is connected with a voltage V485; the positive electrode of the input end of the optical coupler OP2 is connected with a voltage V485, the negative electrode of the input end is connected with an RO pin of a 485 communication chip U4, the collector of the output end is connected with 3.3V voltage through a resistor R30, the collector of the output end is connected with an RXD1 pin of a chip U1, and the emitter of the output end is grounded; the positive electrode of the input end of the optical coupler OP3 is connected with 3.3V voltage through a pull-up resistor R31, the negative electrode of the input end is connected with the TXD1 pin of the chip U1, the collector of the output end is connected with the voltage V485, and the emitter of the output end is connected with the DI pin of the communication chip U4; a resistor R34 is connected between the pin A of the 485 communication chip U4 and the pin VCC, the pin B of the 485 communication chip U4 is grounded, and a TVS tube is connected between the pins A, B.
8. The single-phase guide rail type intelligent electric energy meter supporting index management according to claim 7, characterized in that: the communication unit adopts GPRS communication unit, GPRS communication unit includes: the optical coupler OP4 with 6 pins and the optical coupler OP5 with 6 pins are connected, the anode of the input end of the optical coupler OP4 is connected with 3.3V voltage through a resistor R27, the cathode of the input end is connected with a TXD0 pin signal of a chip U1, the 6 pins of the output end of the optical coupler OP4 are connected with voltage V485, 5 pins output W-RXD signals, and 4 pins are grounded; the positive electrode of the input end of the optical coupler OP5 is connected with a voltage V485 through a resistor R45, the negative electrode of the optical coupler inputs a W-RXD signal, the 6 pins of the output end are connected with a 3.3V voltage, the 5 pins output signals to the RXD0 pins of the chip U1, and the 4 pins are grounded.
9. The single-phase guide rail type intelligent electric energy meter supporting index management according to claim 5, characterized in that: the memory chip U2 adopts a 24C256 chip, a VCC pin is connected with 3.3v voltage, an SCL pin is connected with a pull-up resistor R24, an SCL pin of the chip U1, and an SDA pin is connected with a pull-up resistor R25 and an SDA pin of the chip U1.
10. The single-phase guide rail type intelligent electric energy meter supporting index management according to claim 5, characterized in that: the metering pulse circuit includes: pulse lamp D7, opto-coupler OP1, pulse lamp D7 positive pole connect 3.3v voltage through resistance R23, the negative pole connects PF pin and resistance R38 of chip U1, the other termination opto-coupler OP1 input end negative pole of resistance R38, opto-coupler OP1 input end positive pole connects 3.3v voltage, output pulse measurement signal.
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