prepaid energy meter circuit diagram

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A commercial version of the system can have smart cards instead. Text: Evaluation Board Documentation TRF7003 RF Power Amplifier 4.8 Volt GSM Application APPLICATION , those mandated by government requirements. The board is connected to a GSM module for sending confirmation SMS of successful recharges and alert messages for next recharge. The consumer needs to make a recharge before the available energy balance is exhausted. The number of blinks in a minute during running supply to the load should be calculated. Text: y stem .61 Microcontroller-based energy metering using the A D 7755 , . The loads will be connected between the phase wire and the NO pin of the relay. The LCD is initialized using LCD.begin() function and initial messages indicating name of the project are flashed on the screen. The pin 17 is called valid transmission and has an LED connected to it through 1 K resistor to indicate if the RF transmitter on the Prepaid Energy Meter is paired with the receiver or not. A function eeprom_i2c_read() is defined to read data from a specific address of the EEPROM. Text: operate on a GSM network. The device will have an LDR circuit assembly to detect electricity consumption by detecting blink of Imp / kWh LED on front panel of Electronic Energy Meter and will drive a relay circuit to cut off the supply from neutral wire end once the recharge energy usage balance is exhausted. The RS and E pins of the LCD are connected to pins 13 and 12 of the Arduino UNO respectively. The lowAlertSMS() function is used to send message of low energy balance to user. *^Juxa5&Mh(Z8#7R%`q@bvLJ9 i. The baud rate for serial transmission of data to the LCD is set to 9600 bits per second using Serial.begin() function and communication over TWI is initialized using Wire.Begin() method. Therefore, the D0 bit of the encoder IC is connected to the pin 7 of Arduino MEGA. Text: SocketModem Test Board Serial Test/Demo Board Block Diagram Block Diagram for the SocketModem GSM /GPRS , been some public concern about possible health effects of using GSM modems. The same number of blinks will be equivalent to 1 KWH or 1 unit of electricity consumption. The device is made capable to cut off the main supplies by regulating the main supplies through a relay circuit. The Imp / kWh LED of the front panel of EEM blinks t a certain number of times according to impulse/KWH rating when the electricity consumption read by the meter crosses 1KWH each time . The memory stick used as alternative to the smart recharge card is AT2402. The neutral wire will connect back to a regular electricity meter through the COM point. HT12E IC The HT12E IC converts the parallel data into serial data for passing it to the RF transmitter. gsm using prepaid energy meter circuit diagram, AN1642 VIPower 5V buck smps with VIPer12A, toshiba crt colour tv kit circuit diagram, schematic diagram UPS 600 Power structure, CIRCUIT DIAGRAM FOR gsm modem with sim 300, short range wireless data communication circuit, proximity sensors parking microcontroller 8051, GSM based home appliance control circuit diagram, circuit diagram of moving LED message display, gsm modem sim 300 interface with microcontroller, full automatic Washing machines microcontroller, AUDIO MOSFET POWER AMPLIFIER SCHEMATIC schematic diagram, internal circuit design diagram of automatic ticket vending machine, circuit diagram of keypad door lock system, Brushless Motor Driver/3 PhasesDriver/Vout(V)=45/Iout(A)=1.8/Square, Sine Wave, Brushless Motor Driver/3 Phases Driver/Vout(V)=25/Iout(A)=1/Square Wave, Brushless Motor Driver/3 Phases Driver/Vout(V)=25/Iout(A)=3/Square, Sine Wave, Brushless Motor Driver/1 Phase Pre Driver/Vout(V)=40/Square, Sine Wave, Brushless Motor Driver/3 Phases Controller/Vout(V)=18/Square, Sine Wave, Brushed Motor Driver/1ch/Vout(V)=50/Iout(A)=3. The variables bs1, bs2, bs3, bs4, bs5 are declared to hold the status of Arduino pins.

The RS and E pins of the LCD are connected to pins 13 and 12 of the Arduino UNO respectively. These cards hold typically between 1Kb and 4Kb of data , , 2000 www.xilinx.com 1-800-255-7778 1 R Using CoolRunner CPLDs in Smart Card Reader, Abstract: ultrasonic flowmeter circuit PLC based WATER LEVEL CONTROL By using Infineon Technologies' s , involved, security is of the highest concern. Placing the values in above equation , Meter rating in impulse/KWH = (60 * 5.333 * 1000)/100. A function eeprom_i2c_write() is defined which writes data to a specific address of the EEPROM. ENSURE TOMORROW. The standard open-source library for interfacing LCD with Arduino MEGA is used in the project. sensorValue =analogRead(A0)*(5.0/1023.0)*100; This ends the Arduino sketch for Prepaid Energy Meter. % 4 0 obj This rating can vary from 800 impulse/KWH to 3600 impulse/KWH. The Arduino Mega waits for the blink of Imp / kWh LED of the front panel of EEM and on every blink compares the detected analog voltage at its A0 pin which is converted to a digital measure with a calibrated value. Active energy , an advanced single phase electricity meter for active energy .

s SurePay TM PrePaid Service for Mobile Networks , . In the program code, first the standard open-source libraries of Arduino for interfacing LCD, Virtual Serial port and serial communication are imported. Text: White Paper: CoolRunner CPLDs R WP118 (v1.0) May 18, 2000 Using CoolRunner CPLDs in Smart , for club membership details and then the exact amount is debited from our account using the on-card , card is classed as an integrated circuit (IC) card. endobj The circuit is built on Arduino Mega and has different components and modules connected to the board in the following manner . This project is an attempt to realize a similar system. The analog voltage at A0 pin is read and converted to digital reading using analogRead() function. SUPERHOMODYNETM DIRECT-CONVERSION RECEIVER A functional block diagram o f the Othello dual band GSM radio , services could, in concept, occur over the GSM network using the same radio in the handset. The serial data output of the RF receiver is connected to pin 16 of the HT12D decoder IC. The available electricity consumption is calculated by the number of blinks by the Imp/KWH LED of the EEM.

In the project, address byte of both the receiver and transmitter modules is set to 0x00. In a prepaid electricity connection, consumer would need to recharge the amount of electricity they want to consume. HT12D decoder IC The signal carrying low energy balance alert is detected by the RF receiver and is passed to the HT12D decoder. HT12E encoder IC belongs to the 212 series of encoders. For simplicity, it is used as an alternative to the smart cards. void eeprom_i2c_write(byte address, byte from_addr, byte data) {. The EEMs come with an Impulse/KWH rating. A variable to hold analog value from LDR sensor is declared.

LDR sensor The LDR sensor will be placed in an assembly before the Imp / kWh LED of the front panel of regular EEM. LiquidCrystal lcd(13, 12, 6, 5, 4, 3);// Pins used for RS,E,D4,D5,D6,D7, SoftwareSerial mySerial(9, 10); // RX, TX, int b1 = A0; // Push button used as * and < at A0 pin, int b2 = A1; // Push button used as > at A1 pin, int b3 = A2; // Push button used as EXIT at A2 pin, int b4 = A3; // Push button used as # and save at A3 pin. Text: Summary Platform Enhanced Control Server Protocols ANSI-41, GSM CAMEL, ETSI INAP CS 1 GeoCore Solution TM Add Location Functionality to Traditional Applications I f you provide , billing for the call is based on that rate zone. The VCC and Ground pins of the module are connected to 5V DC and GRND pin of the Arduino UNO board. It also supports In GSM networks, non-voice services are steadily, Abstract: sim gsm modem circuit diagram circuit diagram of moving LED message display Siemens MC75 gsm modem block diagram gsm modem sim 900 gsm modem circuit sim 300 modem datasheet at commands sim 300 gsm modem datasheet GSM module BLOCK diagram

The pins 1, 2 and 3 of the EEPROM IC are connected to ground as at any time the recharge station will have only single EEPROM plugged in. If a valid recharge is done or not is checked by if-else logic. If the pulse variable is left 30 percent that is 70 percent of energy balance is consumed the D0 bit of RF encoder is set to HIGH. =b_imo_W`kGJN]"(^!:&0 >y?]OozELfM$WClm[.5}]]'{*IY2Y)W]; UIGf]a5g)8UrTog36GcU~\scvg9fb/ZOov'iFvk5hnaR5e~#F]GJu'#@2ZfX6zNX8[\ :8/O@C36)|X}2^|'4qD4ALw9V. 16X2 LCD display The LCD display is used to provide an interface for human interaction and it displays messages guiding the user to recharge electricity usage. A commercial version of the system can have recharge station and prepaid energy meter connected via internet. The cause of getting high bills is usually not the high electricity rates but is the unconscious overuse of electricity. The board is interfaced to RF receiver circuit so that it could connect with the prepaid energy meter and detect low energy balance. If pos variable is set to 20, digital input from buttons is read and a message indicating recharge process is shown on LCD. A message of successful recharge is sent to users number by calling rechagreAlertSMS() function. There will be seven recharge packages available worth 2, 5, 7, 9, 12, 15 and 17 rupees. Again, message is sent to an imaginary 91xxxxxxxxxx number which can be replaced with any real mobile number. }?rc1yFomj{_ f_OM@|''OoWo-lU%EPU The meter rating should be confirmed and well known to write Arduino code for calculation of energy consumption and balance deduction. HT12D belongs to the 212 series of decoders and can be paired with 212 series of encoders having the same number of addresses and data format. The customer , MEASURE TODAY. If D0 bit of decoder IC is set HIGH, an alert message of low balance is shown on LCD screen and function to send SMS alert is called. Revised package contents. A set of counter variables is declared and an array to hold bitmap for custom rupee character is declared. The Arduino pins by default are connected to VCC and receive HIGH logic. It is designed for installation on a , is an active energy , single phase meter for direct metering up to 80A. The rechargeAlertSMS() function is same as the lowAlertSMS() function except that the message text is different. The difference between the inverting and non-inverting voltage is passed from the output pin 1 of the comparator to analog pin A0 of the Arduino. mySerial.println(AT+CMGS=+91xxxxxxxxxx r); mySerial.print(Rechange Done, MRP:Rs.);// The SMS text you want to send. If an EEM is indicated with 1600 impulse/KWH rating, on consumption of 1 KWH or 1 unit of electricity, its Imp / kWh LED on front panel will blink for 1600 times. Thus, energy , meter can be configured to measure both imported and exported energy . In this project a circuit is designed that would work as electricity recharge station and an additional circuit is designed that could integrate with the regular household energy meters and capable of counting down energy usage and cut off the main supply once the energy usage countdown reaches zero. days 15 , meter cabinet Own consumption Current circuit 0,02 VA Voltage curcuit 0,2 VA 0,1 W , CCC-module is mounted without using tools or breaking the seal of the meter .

Please read this manual completely and, Abstract: GSM based home appliance control circuit diagram sim 300 modem datasheet gsm modem block diagram gsm modem sim 900 CIRCUIT DIAGRAM FOR gsm modem with sim 300 circuit diagram of moving LED message display Wavecom g850 1900 sim 300 modem datasheet at commands sim 300 gsm modem datasheet The EEPROM IC stores the recharge information and is pluggable to the recharge station and the prepaid energy meter. Alas, currently internet is neither available at all places nor is it free to provide such feature in a commercial avatar of such system. The pins where tactile switches are connected are assigned to variables b1, b2, b3 and b4. Text: Training Catalogue GSM , NMT and UMTS Year 2000 E Training Catalog GSM , NMT and UMTS , .169 ERA/GD/X EN/LZT 123 1210 R7B 00-12-19 Ericsson GSM /Index 1 Table of Contents , . The program code will run on the Arduino Mega. <>>> The write() method is used to write data and endTransmission() method is used to close the transmission. It converts the serial data back to the parallel data after separating data and addresses. Power Supply A step down transformer is used to convert 230v AC to 18v AC and by using a full bridge rectifier and capacitor it is converted to 18V DC. However, meters with 1000 impulse/KWH rating are gaining popularity nowadays. mySerial.println(AT+CMGS=+91xxxxxxxxxxr); mySerial.println(LOW BALANCE PLEASE RECHANGE);// The SMS text you want to send, mySerial.println((char)26);// ASCII code of CTRL+Z. mySerial.println(Use electricity wisely to avoid rising costs.); This ends the Arduino sketch for Recharge Station. The pins are used for addressing individual EEPROMs when multiple EEPROMs connect to a single microcontroller at the same time. The transistor circuit will short circuit one of the coil end to ground while the other coil end is provided 12V supply tripping the relay to NC point. An object of LCD class is declared and mapped with the Arduino pins. 2) Smart device to store recharge amount The project uses a memory stick to demonstrate functioning of a smart recharge device. For building recharge station, following components will be required , The AT2402 memory stick is used as the smart recharge device. To set the oscillator frequency, a resistor from 1M is connected between pin 15 and 16 of the HT12E encoder IC. The standard open-source library for interfacing LCD with Arduino UNO is used in the project. The RF transmitter module is a small PCB sub assembly. So the meter rating is confirmed to be 3200 impulse/KWH. HT12E is capable of encoding 12 bits, out of them 8 are address bits and 4 are data bits. Thus the encoded signal is a serialized 12-bit parallel data comprising of 4-bit data to be transferred appended with the address byte. |U|]|9YwB+lcG/0fL'.TS3>+l'}]r4] M~}CMM A setup() function is called in which the baud rate for virtual serial port and serial transmission of data to the LCD is set to 9600 bits per second using mySerial.begin() and Serial.begin() functions respectively and communication over TWI is initialized using Wire.Begin() method. Revised package contents and , .9 Functions GSM Modes , .16 Chapter 3 Using Your Wireless Modem, Abstract: sim gsm modem circuit diagram gsm modem sim 300 interface with microcontroller full automatic Washing machines microcontroller CIRCUIT DIAGRAM FOR sim 300 gsm modem RF toy plane circuit diagram MTSMC-G-F1 gsm modem sim 300 block diagram GSM based motor control circuit diagram SMA RF connector semi-rigid The regular EEM used in the project testing had a rating of 3200 impulse/KWH. Check out our engineering forums, Getting started with MicroPython on ESP8266, How to use MicroPython with ESP8266 and ESP32 to connect to a WiFi network, Using MicroPython SSD1306 driver to interface an OLED display with ESP8266 & ESP32, How to use ESP8266s sleep modes in MicroPython, MicroPython: Time-related functions, timers & interrupts in ESP8266 and ESP32, MicroPython Reading analog signals in ESP8266 and ESP32, ESP8266/ESP32-based WiFi access point using MicroPython, How to achieve longer MCU battery life with low power sleep mode, Infineons CoolSiC devices support Deltas bi-directional inverter, Qualcomm and Mahindra to provide immersive in-vehicle experiences, Diodes launches high-efficiency synchronous boost converter, Help designing 1.6KW Isolated AC/DC with Constant Current Output, Help with Zero Crossing Detector with the 16F877A code on MPLAB XC8. The circuit working as recharge station has different components and modules connected to Arduino board in the following manner . <> The calibrated value for comparison with the value from ADC was set to 300 during project testing.

byte eeprom_i2c_read(int address, int from_addr) {. In the program code, first the standard open-source libraries of Arduino for interfacing LCD, Virtual Serial port and serial communication are imported. If the available energy balance is exhausted, the Arduino Mega drives the relay contactor to NC point cutting off the main supplies. The virtual serial port is realized at pins 9 and 10 of the Arduino. A set of counter variables is declared and an array to hold bitmap for custom rupee character is declared. The pin configuration of transmitter module is as follows-. endobj The recharge station will also send a confirmation message to the registered mobile number of the consumer on every recharge. A 47 K resistor is connected between the pins 14 and 15 of the decoder IC to match the RF frequency.

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prepaid energy meter circuit diagram