Intelligent anti-theft ammeter based on HPLC communication

Abstract

The utility model provides an intelligent anti-theft electricity meter based on HPLC (High Performance Liquid Chromatography) communication, which solves the problems that an electricity meter interface is single, wiring is inconvenient to expand a communication mode and the like, and comprises an MCU (Microprogrammed Control Unit) module which is connected with a metering module, a communication module, a power supply module and a storage module, the MCU module is connected with a display module, a keyboard input module and a peripheral module, a V85XX series chip is selected by the MCU module, a V93XX series chip is selected by the metering module, and the communication module is provided with an HPLC communication circuit, an RS485 communication circuit and an infrared communication circuit. The utility model has the advantages of no need of additional wiring, stable operation and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of intelligent electric meter, specifically relates to a kind of intelligent electricity-preventing meter based on HPLC communication. BACKGROUND

[0002] From the 1990s, the development of electric meter collection service promotes the development of low-voltage power line narrowband carrier technology, but with the development of business needs, the data volume and real-time needs of electric power collection service are significantly improved, and the narrowband carrier support capacity appears bottleneck, low-voltage power line high-speed carrier communication technology, referred to as HPLC, is a carrier communication technology specially designed for the characteristics of low-voltage area "last mile" power line channel to meet the increasing demand of electric power collection and distribution network collection. In actual use, the existing electric meter cannot replace the module for remote data reading and control, and the interface is single and inconvenient for additional wiring to expand communication mode.

[0003] In order to solve the problems existing in the prior art, people have carried out long-term exploration and put forward various kinds of solutions. For example, Chinese patent document discloses a meter reading device based on HPLC module [202021861718.7], which comprises a terminal layer, a communication layer and a master station layer, which are connected in sequence. The terminal layer is used to collect terminal data and then send it to the communication layer. The master station layer is used to receive and process the data of the communication layer and then supply the corresponding platform.

[0004] The above-mentioned scheme solves the problem of intelligent electric meter reading communication to some extent, but the scheme still has many problems, such as single interface, inconvenient wiring and communication mode expansion. SUMMARY

[0005] The utility model aims at the above problems, and provides a kind of intelligent electricity-preventing meter based on HPLC communication with reasonable design and without additional wiring.

[0006] To achieve the above object, the utility model adopts the following technical scheme: a kind of intelligent electricity-preventing meter based on HPLC communication, including MCU module, MCU module is connected with metering module and communication module, MCU module is connected with power module and storage module, MCU module is connected with display module, keyboard input module and peripheral module, MCU module selects V85XX series chip, metering module selects V93XX series chip, communication module has HPLC communication circuit, RS485 communication circuit and infrared communication circuit.

[0007] In the above-mentioned intelligent electricity-preventing meter based on HPLC communication, MCU module adopts V8500 type main control chip IC1, and main control chip IC1 is connected with interface J1.

[0008] In the above-mentioned one based on HPLC communication intelligent anti-theft meter, the power module includes the interface UL and the interface UN connected with the bridge rectifier D1, and the bridge rectifier D1 is connected with the transformer U1 and the variable core chip DY1; the power module has a DC-DC converter IC3 of SY8113 type, and the DC-DC converter IC3 is connected with a stabilizer IC2 of 78L05 type; the power module has a stabilizer IC5 of 78L05 type, the stabilizer IC5 is connected with a diode D3, and the stabilizer IC5 is connected with a stabilizer IC4 of WL2810B type and a stabilizer IC6 of 7533 type through a diode D2, and the stabilizer IC6 is connected with the interface J3, the interface J5 and the interface J6 through a BAT54C signal Schottky diode Q1.

[0009] In the above-mentioned one based on HPLC communication intelligent anti-theft meter, the HPLC communication circuit includes an isolator IC9 of π131U6xR type and a photoelectric coupler U3, and the HPLC communication circuit has a driving chip IC10 of RS232 type and interfaces JP2 and JP3.

[0010] In the above-mentioned one based on HPLC communication intelligent anti-theft meter, the RS485 communication circuit includes an isolator IC12 of π131U6xR type, and the isolator IC12 is connected with the interface JP1 through a driving chip IC8 of RY485 type.

[0011] In the above-mentioned one based on HPLC communication intelligent anti-theft meter, the infrared communication circuit includes oppositely arranged light emitting diodes LED6 and an infrared receiver IR1, and the infrared receiver IR1 is connected with a triode Q4.

[0012] In the above-mentioned one based on HPLC communication intelligent anti-theft meter, the metering module includes the interface JP4 and a metering chip IC14 of V9360 type, and the metering module is provided with triodes Q5 and Q9 connected with each other.

[0013] In the above-mentioned one based on HPLC communication intelligent anti-theft meter, the display module includes a driving chip LCD1 of M7391 type, and the driving chip LCD1 is connected with a triode Q2.

[0014] In the above-mentioned one based on HPLC communication intelligent anti-theft meter, the keyboard input module includes button switches S1-S6 and diodes LED1-LED4; and the storage module includes a FLASH memory IC13 and an EEPROM IC16.

[0015] In the above-mentioned one kind based on HPLC communication's intelligent anti-theft electric meter, peripheral module includes CN8031 type driver IC 11, and driver IC 1 is connected with triode Q 6 through photoelectric coupler U 4;Peripheral module has mutually connected photoelectric coupler IC 7 and interface JS 2;Peripheral module has AB30S type solid state relay U 2 and interface JS 1 connected with solid state relay U 2;Peripheral module has photoelectric coupler IC 15 and AH3661 type hall sensor IC 17.

[0016] Compared with the prior art, the utility model has the advantages that communication module has multiple communication circuits, and the built-in HPLC communication circuit does not need additional wiring;The electric meter is integrated with multiple functions such as operation state early warning, parameter setting, load control, data transmission and self-defined functions, to meet the complex operation control requirements;The HPLC high-speed feature can effectively improve the electric energy meter automatic meter reading success rate;And the high-frequency acquisition of electric energy meter voltage and current data can be realized, and the power supply line aging trend analysis, power grid voltage quality and load fluctuation monitoring can be carried out. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structural principle drawing of the utility model;

[0018] Figure 2 It is the circuit schematic diagram of the MCU module of the utility model;

[0019] Figure 3 It is the circuit schematic diagram of the power module of the utility model;

[0020] Figure 4 It is the circuit schematic diagram of the communication module of the utility model;

[0021] Figure 5 It is the circuit schematic diagram of the metering module of the utility model;

[0022] Figure 6 It is the circuit schematic diagram of the display module of the utility model;

[0023] Figure 7 It is the circuit schematic diagram of the keyboard input module of the utility model;

[0024] Figure 8 It is the circuit schematic diagram of the storage module of the utility model;

[0025] Figure 9 It is the circuit schematic diagram of the peripheral module of the utility model;

[0026] In the drawing, MCU module 1, metering module 2, communication module 3, power module 4, storage module 5, display module 6, keyboard input module 7, peripheral module 8. DETAILED DESCRIPTION

[0027] The utility model will be made further detailed explanation in combination with the drawings and specific implementation.

[0028] As Figures 1-9 The utility model discloses an intelligent electricity -stealing prevention meter based on HPLC communication, including MCU module 1, and MCU module 1 is connected with measurement module 2 and communication module 3, and MCU module 1 is connected with power module 4 and storage module 5, and MCU module 1 is connected with display module 6, keyboard input module 7 and peripheral module 8, and MCU module 1 selects V85XX series chip, and measurement module 2 selects V93XX series chip, and communication module 3 has HPLC communication circuit, RS485 communication circuit and infrared communication circuit, supports HPLC, RS485 and infrared communication, and supports DLMS protocol simultaneously. Its measurement module 2 has the support active 1 level, reactive 2 level precision measurement, and the instantaneous parameter of measurement includes voltage, current, active power, reactive power, apparent power, power factor, frequency, time etc., and the electric quantity parameter includes active total electric quantity, active rate electric quantity, reactive total electric quantity, reactive rate electric quantity etc., and electric quantity data support split phase and positive and negative direction;The demand parameter includes total demand, active rate demand, total reactive demand, reactive rate demand etc., and demand data support split phase and positive and negative direction. Display module 6 maximum support 30 page data item can set up display, and all its instantaneous parameter, electric quantity etc. can be displayed, including but not limited to voltage, current, active power, reactive power, power factor, frequency, time. Storage module 5 supports 13 months' history bill and saves 5 years' daily load curve.

[0029] Specifically, MCU module 1 adopts the main control chip IC1 of V8500 mode, and the main control chip IC1 is connected with interface J1. The main control chip IC1 of V8500 mode is a highly integrated 32-bit MCU series product, and is suitable for multifunction, low-power Internet of Things application. It integrates Cortex-M0 core, 256KB FLASH, 32KB SRAM, UART / SPI / I2C interface, LCD, WDT and RTC, supports multiple low-power working modes, and supports RTC power independent power supply.

[0030] In-depth, the power module 4 includes the interface UL and the interface UN connected by the bridge rectifier D1 connected by the transformer U1 and the variable chip DY1; the power module 4 has the DC-DC converter IC3 of the SY8113 model, and the DC-DC converter IC3 is connected with the stabilizer IC2 of the 78L05 model; the power module 4 has the stabilizer IC5 of the 78L05 model, the stabilizer IC5 is connected with the diode D3, the stabilizer IC5 is connected with the stabilizer IC4 of the WL2810B model and the stabilizer IC6 of the 7533 model through the diode D2, and the stabilizer IC6 is connected with the interface J3, the interface J5 and the interface J6 through the BAT54C signal Schottky diode Q1. The power module 4 adopts the constant voltage switching power supply chip, the modular design, not only small size, large output power, low output ripple, but also load short circuit protection function. Two-way 12V power supply, one-way RS4585 power supply, two-way 3.3V power supply, 12V power supply for HPLC communication circuit and relay work, 3.3V power supply for MCU module 1 and peripheral module 8 work.

[0031] The electric meter includes three communication types of HPLC communication, RS485 communication and infrared communication. The HPLC communication circuit adopts OFDM technology, and different communication frequency bands can be configured through different subcarrier shielding schemes. Typical communication frequency bands include 2-12MHz, 2.4-5.6MHz, 1.7-3MHz and 0.7-3MHz, the number of FFT points is 1024 points, the sampling rate is 25MHz, the subcarrier interval is 24.414KHz, the encoding algorithm is Turbo binary encoding, the size of the physical block includes PB16, PB72, PB136, PB264 and PB520, the code rate includes 1 / 2 and 16 / 18, the modulation mode includes BPSK, QPSK and QAM16, different diversity copy modes are adopted, and under different noise and channel conditions, the communication rate can reach from 100Kbps to 1Mbps.

[0032] Further, the HPLC communication circuit includes the isolator IC9 of the π131U6xR model and the optoelectronic coupler U3, and the HPLC communication circuit has the drive chip IC10 of the RS232 model and the interface JP2 and the interface JP3.

[0033] Still further, the RS485 communication circuit includes the isolator IC12 of the π131U6xR model, and the isolator IC12 is connected with the interface JP1 through the drive chip IC8 of the RY485 model.

[0034] In addition, the infrared communication circuit includes the light-emitting diode LED6 and the infrared receiver IR1 arranged oppositely, and the infrared receiver IR1 is connected with the triode Q4.

[0035] Meanwhile, the metering module 2 comprises an interface JP4 and a metering chip IC14 of model V9360, and is equipped with a triode Q5 and a triode Q9 connected with each other. The metering module 2 supports full-wave and fundamental wave energy metering in multiple modes and supports monitoring of multiple power grid events. Meanwhile, waveform data can be transmitted out through DMA in SPI protocol or stored locally through a waveform buffer.

[0036] It can be seen that the display module 6 comprises a driving chip LCD1 of model M7391, and the driving chip LCD1 is connected with a triode Q2. The driving chip LCD1 adopts a driving integrated in a V8500. The LCD display screen adopts a segment code type LCD display screen of 8COM*26SEG self-designed, and cooperates with the keyboard input module 7 to be capable of displaying various real-time metering parameters and power data of the electric meter.

[0037] Obviously, the keyboard input module 7 comprises button switches S1-S6 and diodes LED1-LED4. The key input adopts six keys: S1, S2 and S5 are mainly used for cover detection; S3 is mainly used for forward page turning; S4 is mainly used for backward page turning; and S6 is used for manual power stealing removal.

[0038] The storage module 5 comprises a FLASH memory IC13 and an EEPROM memory IC16, and meets the large data storage requirement of the smart electric meter.

[0039] Preferably, the peripheral module 8 comprises a driver IC11 of model CN8031, the driver IC1 is connected with a triode Q6 through an optocoupler U4; the peripheral module 8 has an optocoupler IC7 and an interface JS2 connected with each other; the peripheral module 8 has a solid state relay U2 of model AB30S and an interface JS1 connected with the solid state relay U2; and the peripheral module 8 has an optocoupler IC15 and a Hall sensor IC17 of model AH3661.

[0040] In summary, the principle of the embodiment is that the communication module 3 of the electric meter has an HPLC communication circuit, an RS485 communication circuit and an infrared communication circuit, wherein the HPLC communication circuit utilizes the high speed rate feature to effectively improve the automatic meter reading success rate of the electric energy meter; the metering module 2 can realize high frequency collection of voltage and current data of the electric energy meter, can develop power supply line aging trend analysis and monitor power grid voltage quality and load fluctuation.

[0041] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or adopt similar ways to replace, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0042] Although the terms MCU module 1, metering module 2, communication module 3, power module 4, storage module 5, display module 6, keyboard input module 7, peripheral module 8, etc. are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the present application; any interpretation of them as an additional limitation is contrary to the spirit of the present application.

Claims

1. An intelligent anti-theft electricity meter based on HPLC communication, comprising an MCU module (1), the MCU module (1) is connected with a metering module (2) and a communication module (3), the MCU module (1) is connected with a power module (4) and a storage module (5), the MCU module (1) is connected with a display module (6), a keyboard input module (7) and a peripheral module (8), characterized in that, The MCU module (1) selects V85XX series chip, the metering module (2) selects V93XX series chip, and the communication module (3) has HPLC communication circuit, RS485 communication circuit and infrared communication circuit.

2. The intelligent anti-theft electricity meter based on HPLC communication according to claim 1, characterized in that, The MCU module (1) adopts V8500 type main control chip IC1, and the main control chip IC1 is connected with interface J1.

3. The intelligent anti-theft electricity meter based on HPLC communication according to claim 1, characterized in that, The power module (4) includes bridge rectifier D1 connected interface UL and interface UN, the bridge rectifier D1 is connected with transformer U1 and variable chip DY1, the power module (4) has SY8113 type DC-DC converter IC3, the DC-DC converter IC3 is connected with 78L05 type voltage stabilizer IC2, the power module (4) has 78L05 type voltage stabilizer IC5, the voltage stabilizer IC5 is connected with diode D3, the voltage stabilizer IC5 is connected with WL2810B type voltage stabilizer IC4 and 7533 type voltage stabilizer IC6 through diode D2, the voltage stabilizer IC6 is connected with interface J3, interface J5 and interface J6 through BAT54C signal Schottky diode Q1.

4. The intelligent anti-theft electricity meter based on HPLC communication according to claim 1, characterized in that, The HPLC communication circuit includes π131U6xR type isolator IC9 and photoelectric coupler U3, and the HPLC communication circuit has RS232 type driving chip IC10 and interface JP2 and interface JP3.

5. The intelligent anti-theft electricity meter based on HPLC communication according to claim 1, characterized in that, The RS485 communication circuit includes π131U6xR type isolator IC12, and the isolator IC12 is connected with interface JP1 through RY485 type driving chip IC8.

6. The intelligent anti-theft electric meter based on HPLC communication according to claim 1, characterized in that, The infrared communication circuit includes oppositely arranged light emitting diode LED6 and infrared receiver IR1, and the infrared receiver IR1 is connected with triode Q4.

7. The intelligent anti-theft electricity meter based on HPLC communication according to claim 1, characterized in that, The metering module (2) includes interface JP4 and V9360 type metering chip IC14, and the metering module (2) is equipped with triode Q5 and triode Q9 connected with each other.

8. The intelligent anti-theft electric meter based on HPLC communication according to claim 1, characterized in that, The display module (6) includes M7391 type driving chip LCD1, and the driving chip LCD1 is connected with triode Q2.

9. The intelligent anti-theft electricity meter based on HPLC communication according to claim 1, characterized in that, The keyboard input module (7) includes button switch S1-S6 and diode LED1-LED4, and the storage module (5) includes FLASH memory IC13 and EEPROM memory IC16.

10. The intelligent anti-theft electric meter based on HPLC communication according to claim 1, characterized in that, The peripheral module (8) includes CN8031 type driver IC11, and the driver IC1 is connected with triode Q6 through photoelectric coupler U4, the peripheral module (8) has photoelectric coupler IC7 and interface JS2 connected with each other, the peripheral module (8) has AB30S type solid state relay U2 and interface JS1 connected with the solid state relay U2, and the peripheral module (8) has photoelectric coupler IC15 and AH3661 type Hall sensor IC17.

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