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CN-224231854-U - Supporting electric energy meter matching circuit capable of hot plug

CN224231854UCN 224231854 UCN224231854 UCN 224231854UCN-224231854-U

Abstract

The utility model relates to a supporting electric energy meter matching circuit capable of being hot plugged, which comprises a power supply, an MCU processing system, an indicator lamp module, an acoustic prompt module, a starting key, an electric insulation photoelectric isolation communication module, a matching unit and an interface module, wherein the power supply is used for supplying power to the MCU processing system, the MCU processing system is electrically connected with the power supply, the indicator lamp module, the acoustic prompt module, the starting key, the communication module and the matching unit, the MCU processing system comprises a minimum operation system, the minimum operation system comprises a chip UA1 of an RN8613, the chip UA1 is electrically connected with a crystal oscillator circuit, a storage circuit and a peripheral communication interface, and the communication module is electrically connected with the interface module. The utility model has reasonable design, compact structure and convenient use.

Inventors

  • XU JUN
  • ZHANG JIONG
  • WANG JUN
  • ZHU WEITAO
  • WANG XIN
  • WU YI

Assignees

  • 青岛乾程科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250320

Claims (10)

  1. 1. The hot-pluggable supporting electric energy meter matching circuit is characterized by comprising a power supply, an MCU processing system, an indicator lamp module, an audio prompt module, a starting key, an electrically-insulated photoelectric isolated communication module, a matching unit and an interface module which are electrically connected; The power supply is used for supplying power to the MCU processing system; The MCU processing system is electrically connected with the power supply, the indicator light module, the sound prompt module, the starting key, the communication module and the matched unit; The MCU processing system comprises a minimum operation system, wherein the minimum operation system comprises a chip UA1 of an RN8613 which is electrically connected, and the chip UA1 is electrically connected with a crystal oscillator circuit, a storage circuit and a peripheral communication interface; the communication module is electrically connected with the interface module.
  2. 2. The circuit of claim 1, wherein the kit comprises a Bluetooth communication module and a wireless communication module; The interface module comprises an RS485 firmware interface, an RS232 firmware interface, an HPLC firmware interface, a power supply hot plug TTL firmware interface and a reserved isolation firmware interface.
  3. 3. The circuit for supporting the electric energy meter with hot plug according to claim 2, wherein the MCU processing system comprises a chip UA1 and a crystal oscillator YA1, wherein the chip UA1 is electrically connected with the crystal oscillator YA1 and provides a clock signal; the chip UA1 is electrically connected with a timer and a counter; the chip UA1 is connected with resistors RA3, RA4, RA5 and RA6 through a network SWDCLK, SWDIO, RSTN, ISP, a capacitor CA10 is connected between a power source MVDD and the ground, one end of the resistor RA7 is connected with a pin J1 6, and the other end of the resistor RA7 is connected with the power source MVDD; one end of the resistor RA1 is connected with the chip UA1 and the capacitor CA1 through a network RSTN, the other end of the resistor RA1 is connected with the power MVDD, and the other end of the capacitor CA1 is grounded; the capacitor CA2, CA3 is connected between the network LDO18 of the chip UA1 and the ground in parallel, the capacitor CA4, CA5 is connected between the power MVDD and the ground, one end of the resistor RA2 is connected with the pin UA 117 and the capacitor CA7, the other end of the resistor CA7 is connected with the ground, the other end of the capacitor CA6 is connected with the pin UA 118, the other end of the capacitor CA8 is connected with the pin UA1 19, the other end of the capacitor CA8 is connected with the ground, one end of the crystal oscillator YA1 is connected with the pin UA1 25, the other end of the capacitor CA9 is connected with the pin UA 150, the other end of the capacitor CA1 is connected with the pin UA1 51, one end of the resistor R25 is connected with the pin UA1 74 through the network BELL_CTR, the other end of the resistor MVDD is connected with the pin UA1 through the network M_fail_Red_LED_1, the other end of the resistor R26 is connected with the pin UA1, the other end of the resistor MVDD is connected with the pin UA1 through the network M_success_Green1_LED_1 is connected with the pin UA1 72, the other end of the resistor MVDD is connected with the resistor R27, the end of the resistor R27 is connected with the resistor TVS, the end is connected between the chip UA1 and the ground, and the chip TVS 1 is connected between the chip 1 and the ground, and the chip 96 is connected in parallel.
  4. 4. The hot-pluggable support power meter kit of claim 3, wherein the kit and the interface module serve as an interface to the power meter; The RS485 firmware interface circuit comprises resistors RC4, RC12 and an optocoupler UC5 which are respectively connected with M_RS485_RXD_1, M_RS485_TXD_1 and M_RS485_DE/RE_1 of the chip UA1 through a network; One end of the resistor RC4 is connected with the chip UA1 through an M_RS485_RXD_1 network, and the other end of the resistor RC4 is connected with the resistor RC2 and a secondary 5 pin of the high-speed optocoupler UC 3; the other end of RC2 is connected with a power DVDD; one end of the capacitor CC2 is connected with the power DVDD, and the other end is grounded; the secondary 4 pin of the high-speed optocoupler UC3 is grounded, one end of a resistor RC1 is connected with a communication power supply R+5V, the other end of the resistor RC1 is connected with the primary 1 pin of the high-speed optocoupler UC3, the other end of the resistor RC3 is connected with the primary 3 pin of the high-speed optocoupler UC3 through RS485 TXD 1, the other end of the resistor RC5 is connected with the primary 1 pin of the optocoupler UC5 through a network M_RS485 DE/RE_1, the secondary 3 pin of the optocoupler UC5 is connected with a communication power supply R+5V, one end of the resistor RC6 is connected with the communication ground, the other end of the resistor RC7 is connected with the secondary 4 pin of the optocoupler UC5 and a resistor RC7 through a network RS485_DE/RE_1, the other end of the resistor RC7 is connected with the enabling pins/RE and DE of the RS485 chip, one end of the resistor RC9 is connected with the primary 1 pin of the high-speed optocoupler UC6 through a network M_TXD_1, the other end of the resistor RC12 is connected with the primary 1 pin of the chip UA1 through the network M_TXD_1, the other end of the resistor RC6 is connected with the primary 3 pin of the high-speed optocoupler UC6, the other end of the resistor RC6 is connected with the primary 3 R+5V through the network RS485_DE/RE_1, the other end of the resistor RC4 is connected with the resistor UC4, the other end of the resistor RC7 is connected with the capacitor UC4 through RS485, the other end of the resistor UC4 is connected with the capacitor, the end of the capacitor UC3 through RS 3, one end of the high-3 is connected with the high-end of the high-speed optocoupler is connected through RS is connected through the high, one end is connected through the high, one end is connected, one, and the one end, and the one end of the one, and the one of the one, and the one of the one, and the, the other end of the TSS tube DC2, the TSS tube DC3 and the thermistor RC8 is connected with an RS485 power supply R+5V, the other end of the TSS tube DC1 and the other end of the TSS tube DC3 are connected with the communication ground, and the other end of the thermistor RC8 is connected with a terminal JC 1A end through a network A_1; The pull-up resistor R29 is connected with the RS485 power supply R+5V to ensure that the signal is at a high level in a normal state, the pull-down resistor R28 is connected with the communication ground to ensure that the signal is at a low level in a normal state, the TSS tubes DC1, DC2 and DC3 are connected in parallel between the RS 485B and the ground, A and B and between the RS485A and the ground, and the thermistor RC8 is connected in series between the pin A of the RS485 chip and the terminal A of the terminal JC 1.
  5. 5. The circuit of claim 4, wherein the power supply circuit comprises resistors R2 connected with AD SAMPING of the chip UA1 in a network manner, wherein the TXD of the JZA transmitting pin is connected with the chip UA1 through the Meter-Module_TXD, the VSS pin of the J2A is grounded, and the VCC pin is connected with the power supply M+12V; The resistor R2 is connected with the resistor R3 and the input pin VIN of the power chip UQ1 at one end, the resistor R5 is connected with the chip UA1 through a network AD SAMPING, the other end of the resistor R5 is grounded, the capacitors C3 and C4 are connected between the input pin VIN of the power chip and the ground in parallel, the other end of the resistor R3 is connected with the enabling pin EN of the power chip UQ1 and the resistor R7, the other end of the resistor R7 is grounded, the capacitor C5 is connected between the pin SW of the power chip UQ1 and the pin BST, the diode D3, the capacitors C6 and C2 and the electrolytic capacitor E1 are connected between the pin SW of the power chip UQ1 and the ground, the inductor L1 is connected between the capacitor C6 and the diode D3 in series, one end of the resistor R4 is connected with the electrolytic capacitor E1, the other end of the resistor R6 is connected with the feedback pin FB of the power chip UQ1 through the resistor R6, and the other end of the resistor R8 is connected with the feedback pin FB of the power chip UQ 1.
  6. 6. The circuit of claim 5, wherein TVS tube DQ1, capacitors CQ1, CQ2, C20, C21, C22 are connected between power supply M+12V700mA and ground; the capacitors CQ8 and CQ9 are connected between the output pin of the power chip UQ3 and the ground; The diode DQ2 is connected between the power supply V+4V and the power supply MVDD, and the diode DQ3 is connected between the power supply V+4V and the power supply DVDD; The input voltage M+12V is connected to the VIN end of the power chip UQ 1; When the switch is turned on, the diode D3 is reversely turned off, and energy is charged from the SW end to the inductor L1 through the switch, when the switch is turned off, current on the inductor L1 flows through the freewheeling circuit through the diode D3, the diode D3 is positively turned on, and the energy stored in the inductor L1 is transmitted to the output end; The voltage on the inductor L1 is filtered and stored by the capacitors C6 and C2 through the electrolytic capacitor E1 to be output; The input voltage 5V is stored through CQ7, filtered and enters a power chip UQ3, and the power chip UQ3 controls the output voltage through a feedback loop; The output voltage V+4V passes through CQ8, and CQ9 stores energy and filters the output voltage.
  7. 7. The hot-pluggable supporting ammeter matching circuit according to claim 6, wherein the power supply is electrically connected with a transformation circuit, and the transformation circuit comprises an isolation module power supply UC1 and a power supply chip UQ2; one end of a capacitor C11 is connected with a resistor R1, the other end of the capacitor C is grounded, the resistor R1 is connected between the capacitor C11 and a capacitor C7, the capacitor C7 is connected between an input pin VIN of a module power supply UC1 and the ground in parallel, the capacitors C8, C9 and C10 are connected between an output pin +vo of the module power supply UC1 and the ground in sequence in parallel, the capacitors CQ3, CQ4 and CQ5 are connected between an input pin VIN of a power supply chip UQ2 and the ground in sequence in parallel, and the capacitor CQ6 is connected between an output pin Vout of the power supply chip UQ2 and the ground in parallel.
  8. 8. The circuit of claim 7, wherein the interface module comprises an isolated module power UC2 and a power chip UQ5 which are electrically connected; TVS tube D6 and the electric capacity are connected in parallel between interface power and ground, electric capacity C16 connects resistance R12 on one side, the other end ground, resistance R12 connects between electric capacity C16 and electric capacity C17, electric capacity C17 connects in parallel between module power UC 2's input pin VIN and ground, electric capacity C13, C14, C15 connects in parallel between module power UC 2's output pin +vo and ground in proper order, electric capacity CQ20 connects in parallel between power chip UQ 5's input pin VIN and ground, electric capacity CQ21, CQ22 connects in parallel between power chip UQ 5's output pin Vout and ground, diode DQ4 connects between power V+4V and power MVDD, diode DQ5 connects between power V+4V and power DVDD, electric capacity CQ14, CQ15, CQ16 connects between power MVDD and ground.
  9. 9. The circuit of claim 8, wherein the indicator light module comprises resistors R10, R15, R17, R19 respectively connected to the M success Green LED, M FAIL RED LED, M success Green LED, M FAIL RED LED networks of the UA1 chip; The resistor R10 is connected with the base electrode of the triode QD1, the emitter electrode of the triode QD1 is grounded, and the collector electrode is connected with the voltage MVDD through the resistor RD1 and the indicator lamp LDEG.
  10. 10. The circuit for supporting the electric energy meter capable of being hot plugged and unplugged according to claim 3, wherein the starting key circuit comprises resistors RT2, RS1, RS3, RS4, RS5, RS6, RS7, R21, R22, RB2 and R24 which are respectively communicated with Debug_Key_1、Eeprom_SCL、Eeprom_SDA、Dataflash_CS、Dataflash_SDO、Dataflash_SDI、Dataflash_SCLK、RS485_TXD_1、RS485_RXD_1、BELL_CTR、Meter-Module_RXD networks of the chip UA 1; The resistor RT2 is connected with the capacitor CT1 and the resistor RT3, the capacitor CT1 and the resistor RT3 are connected with the ground in parallel, the switch KT1 is connected with the resistor RT1 and is connected with the power DVDD, and the capacitor CT2 is connected between the power DVDD and the ground.

Description

Supporting electric energy meter matching circuit capable of hot plug Technical Field The utility model relates to a hot-pluggable supporting electric energy meter matching circuit. Background The intelligent ammeter is a multifunctional support for electric energy metering, data transmission communication, information storage and the like by utilizing modern advanced electronic technology and through hardware design. The operation of ammeter mainly relies on the firmware at the back of the chip to form a complete set, and when the appearance of smart electric meter is unusual, must upgrade the improvement to current circuit, avoids causing bigger economic loss. Aiming at the problem of a bottom circuit of upgrading application of the intelligent ammeter, the problems of low transmission efficiency, data disorder caused by power line interference are solved, so that upgrading failure is caused, point-to-point transmission is realized, the transmission is stable and reliable, the transmission efficiency is low due to the influence of the characteristics of an infrared receiving and transmitting tube device, one-time long-frame data transmission is limited, the traditional upper computer operation is used for controlling an RS232 or RS485 upgrading mode, the industrial RS232 or RS485 transmission is stable and reliable and high in efficiency, the operation of connecting with a computer is complex, and certain leakage risk exists in the RS232 or RS485, so that certain potential safety hazards are brought to the upgrading. The main reason is that the matching circuit has poor universality, the defects brought by the technical scheme such as low transmission efficiency, easy interference of communication, potential safety hazard and the like exist, and therefore, the hot-pluggable supporting electric energy meter matching circuit is improved, and the high efficiency, the high stability and the high convenience of the circuit are realized, so that the hot-pluggable supporting electric energy meter matching circuit has become an unavoidable problem. Disclosure of utility model The technical problem to be solved by the utility model is to provide a hot-pluggable supporting electric energy meter matching circuit which is applicable to occasions requiring upgrading and iteration of a plurality of intelligent electric energy meters. In order to solve the problems, the utility model adopts the following technical scheme: A supporting electric energy meter supporting circuit capable of being hot plugged comprises a power supply, an MCU processing system, an indicator light module, an acoustic prompt module, a starting key, an electric insulation photoelectric isolation communication module, a supporting unit and an interface module which are electrically connected; The power supply is used for supplying power to the MCU processing system; The MCU processing system is electrically connected with the power supply, the indicator light module, the sound prompt module, the starting key, the communication module and the matched unit; The MCU processing system comprises a minimum operation system, wherein the minimum operation system comprises a chip UA1 of an RN8613 which is electrically connected, and the chip UA1 is electrically connected with a crystal oscillator circuit, a storage circuit and a peripheral communication interface; the communication module is electrically connected with the interface module. As a further improvement of the above technical scheme: the matched unit comprises a Bluetooth communication module and a wireless communication module; The interface module comprises an RS485 firmware interface, an RS232 firmware interface, an HPLC firmware interface, a power supply hot plug TTL firmware interface and a reserved isolation firmware interface. The MCU processing system comprises a chip UA1 which is electrically connected and a crystal oscillator YA1 which provides a clock signal; the chip UA1 is electrically connected with a timer and a counter; The chip UA1 is connected with resistors RA3, RA4, RA5 and RA6 through a network SWDCLK, SWDIO, RSTN, ISP, a capacitor CA10 is connected between a power source MVDD and the ground, one end of the resistor RA7 is connected with a pin J16 of the interface, and the other end of the resistor RA7 is connected with the power source MVDD; one end of the resistor RA1 is connected with the chip UA1 and the capacitor CA1 through a network RSTN, the other end of the resistor RA1 is connected with the power MVDD, and the other end of the capacitor CA1 is grounded; the capacitor CA2, CA3 is connected between the network LDO18 of the chip UA1 and the ground, the capacitor CA4, CA5 is connected between the power MVDD and the ground, one end of the resistor RA2 is connected with the pin of the chip UA117 and the capacitor CA7, the other end of the resistor CA7 is connected with the ground, the other end of the capacitor CA6 is connected with the pin of the chip UA118, the other