prepaid energy meter circuit diagram

For simplicity, the memory system used is a memory chip. Text: antrax Datentechnik GmbH info@antrax.de - www.antrax.de GSM /GPRS/GPS-Shield for Arduino (Rev. The mounting may be done by e.g, Abstract: No abstract text available 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. The Arduino sketch of the prepaid energy meter detects the blinks and runs a counter in descending order measuring consumption of each 1 KWH or unit electricity by 3200 blinks or pulses. The RW pin of the LCD is grounded. The neutral wire will connect back to a regular electricity meter through the COM point. The EEPROM IC stores the recharge information and is pluggable to the recharge station and the prepaid energy meter. An external power supply of 18V is used to power the GSM module. 2) Smart device to store recharge amount The project uses a memory stick to demonstrate functioning of a smart recharge device. The program code will run on the Arduino Mega. The pins 5 and 6 of the EEPROM IC connect to the A4 and A5 pins of the Arduino where A4 is configured to SDA and A5 is configured to SCL. The board is connected to a GSM module for sending confirmation SMS of successful recharges and alert messages for next recharge. The device is made capable to cut off the main supplies by regulating the main supplies through a relay circuit. Text: Evaluation Board Documentation TRF7003 RF Power Amplifier 4.8 Volt GSM Application APPLICATION , those mandated by government requirements. An object of LCD class is declared and mapped with the Arduino pins. 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. A set of counter variables is declared and an array to hold bitmap for custom rupee character is declared. Only the D0 data bit of the decoder is tracked to detect the alert signal. A consumer first needs to make an energy recharge. 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 . The RW pin of the LCD is grounded. On detecting D0 bit high on RF encoder, the Arduino UNO on the recharge station frames and sends an alert message to the consumer using GSM/GPRS module. The write() method is used to write data and endTransmission() method is used to close the transmission. The pins where tactile switches and D0 bit of Decoder IC are connected are set to digital input. It has an LCD display and a 4-switch keypad for human interaction. As the user presses the button connected to A3 pin of Arduino UNO, the recharge amount is saved to location 1 on address B01010000 on EEPROM and the units of electricity recharged in the terms of number of blinks of the Imp / kWh LED of the front panel of EEM are saved. The RS and E pins of the LCD are connected to pins 13 and 12 of the Arduino UNO respectively. It is connected to the Arduino board by connecting its data pins to pins 3 to 6 of the Arduino board. A function eeprom_i2c_read() is defined to read data from a specific address of the EEPROM. The pins where tactile switches are connected are assigned to variables b1, b2, b3 and b4. The regular EEM used in the project testing had a rating of 3200 impulse/KWH. The recharged energy units are saved to a puls variable and relay is tripped to resume main supplies. The VCC and Ground pins of the module are connected to 5V DC and GRND pin of the Arduino UNO board. Once the meter reaches zero, the main supply would be automatically cut off and could be resumed only after the next recharge. On running a 100 Watt bulb for 1 minute intervals, on average 5.333 blinks were received. Alas, currently internet is neither available at all places nor is it free to provide such feature in a commercial avatar of such system. Therefore, in 10 hours, a 100 Watt load will consume 1KWH or 1 unit of electricity. Text: Personalization Systems Eurochip 2 Cards (SLE 5536) In applications using a prepaid card which decreases in , to overcome the use of Personal Identification Numbers. The virtual serial port is realized at pins 9 and 10 of the Arduino. Data circuit asynchronous, transparent, non-transparent up to 14,400 bits Mode , drawing. It is connected to the Arduino board by connecting its data pins to pins 3 to 6 of the Arduino board. On pressing the button, consumer will be prompted to select a recharge amount by flashing messages on the LCD screen. The current available balance is shown on the LCD. The wattage of load is related to meter rating by the following formula , Wattage of load in KW = 3600/(Meter rating in impulse/KWH * Seconds per Flash), The seconds per flash are related to blinks per minute in the following way , Wattage of load in KW = (3600 * Blinks Per Minute)/ (Meter rating in impulse/KWH * 60), Wattage of load in KW = (60* Blinks Per Minute)/Meter rating in 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. The address byte of the decoder IC should be same as of the encoder IC to match the transmitter and receiver circuits. A setup() function is called in which the pin where tactile switch is connected is set to digital input while pins connecting D0 bit of RF encoder and relay coil are set to digital output. In 10 hours, it will consume 1 KW of electricity. ThermoProTM Series TP10 Ultrasonic Thermal Energy Meter For Permanent Installation Applications The TP10 thermal energy measurement meter is an ideal choice for a , Ultrasonic Thermal Energy Meter For Permanent Installation A member of the ThermoPro Series, the TP10 Ultrasonic Thermal Energy Meter (also called BTU Meter ) is the first member of the 3rd generation, Abstract: No abstract text available 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: customer needs to use the TP10 clamp-on thermal energy meter with GSM wireless option. The EEMs come with an Impulse/KWH rating. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media Privacy Policy | Advertising | About Us. Evaluation Board Schematic for GSM , . The same number of blinks will be equivalent to 1 KWH or 1 unit of electricity consumption. This project is an attempt to realize a similar system. The variables bs1, bs2, bs3, bs4, bs5 are declared to hold the status of Arduino pins. A commercial version of the system realized here can have smart cards for facilitating electricity recharges. The meter rating should be confirmed and well known to write Arduino code for calculation of energy consumption and balance deduction. The consumer needs to make a recharge before the available energy balance is exhausted. For building prepaid energy meter, following components will be required , The recharge station is built on Arduino UNO. A commercial version of the system can have recharge station and prepaid energy meter connected via internet. 4 0 obj 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 A printDigits2() functionn is used in the loop() function to format the strings carrying numbers to a zero padded format. 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. If wattage of load in known in Watts then, Wattage of load in Watts = (60* Blinks Per Minute*1000)/Meter rating in impulse/KWH, From the above equation, the meter rating can be confirmed by the formulae , Meter rating in impulse/KWH = (60* Blinks Per Minute*1000)/ Wattage of load in Watts, The EEM used during project testing had a rating of 3200 impulses/KWH mentioned on it. delay(100); // Delay of 1000 milli seconds or 1 second. External EEPROM The external EEPROM will be plugged to the device and connects with the Arduino MEGA on two-wire interface. This rating means that the Imp / kWh LED of the EEM will blink for the indicated number of times when 1 KWH or 1 unit of electricity will be consumed. )9|:q=:Q|7U ,}faMUJwI=z;A;? GSM Module The GSM module has four pins Tx, Rx, Vcc and GRND. 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. RF Receiver The RF receiver is used to get an alert of low energy balance from the prepaid energy meters. The RS and E pins of the LCD are connected to pins 13 and 12 of the Arduino UNO respectively. Infineon is already, Abstract: Arduino Mega2560 arduino due Arduino ATMEGA328 arduino uno development board Text: marketing concepts such as prepaid SIM cards, growth in the international market for GSM terminals , chipset generation for GSM The HiGOLD signal processor comprises two powerful digital signal processors with firmware containing all the DSP algorithms needed for full-rate GSM channel and speech , analog circuit contains all the A/D and D/A converters for Components 1/98 the baseband and , machines now available for GSM . A function eeprom_i2c_write() is defined which writes data to a specific address of the EEPROM. The meter is full electronic without movable parts. External EEPROM AT24C02 is the external EEPROM used as the smart recharge device. To install the modem, do the following: 1. Once navigating to a desired recharge package, consumer can confirm recharge by pressing button connected to A3 pin of the Arduino UNO. 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. }?rc1yFomj{_ f_OM@|''OoWo-lU%EPU If the sensor value exceeds 300, the puls variable is decremented by one and reduced balance in pulses is written back to EEPROM. 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 The user can increase or decrease recharge package by pressing buttons connected to A0 and A1 pins of Arduino and on pressing button connected to A3 pin, selected recharge is shown on the LCD and the recharge information is saved to the EEPROM in terms of ruppes as well as pulses. 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. The analog voltage at A0 pin is read and converted to digital reading using analogRead() function. Like there is a load of 100 Watt, it will consume 100 Watt in an hour. Text: standards for integrated circuit cards (ISO 7816 and ISO 14443), and with GSM specifications 11.11 and 11.12 , Operating Voltage: 3.0V 10% or 5.0V 10% Meets GSM 11.11 & 11.12 Specifications 5.0 MHz Maximum Internal , systems, and other security conscious systems, from finance to health, transport to prepaid mobile phone , by Atmel from Motorola's Smart Information Transfer Division. <> Although research on , SocketModemTM GSM /GPRS Embedded Data/Fax Wireless Modem MTSMC-G-F1 Global GSM /GPRS Class 10, 900/1800 MHz MTSMC-G-F2 Global GSM /GPRS Class 10, 850/1900 MHz Developer's Guide Global SocketModem GSM /GPRS Developer's Guide MTSMC-G-F1 GSM /GPRS Class 10, 900/1800 MHz MTSMC-G-F2 GSM /GPRS, Abstract: No abstract text available 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. Through innovative Integrated Circuit (IC) products , mobile commerce applications. The Tx and Rx pins are connected to the pin number 9 and 10 of Arduino UNO respectively. HT12E is capable of encoding 12 bits, out of them 8 are address bits and 4 are data bits. stream 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. FUTURE , will finish the first installment by showing a practical PLL circuit using the ADF4 111 Frequency S y n , Applications Engineer- 28 (page 30] ll-Electronic Power and Energy Meters (page 64) Complete contents on page, Abstract: AUDIO MOSFET POWER AMPLIFIER SCHEMATIC gsm signal amplifier circuit diagram list of n channel power mosfet digital frequency meter circuit diagram trf7003 HP8481A 48vdc schematic diagram AUDIO MOSFET POWER AMPLIFIER SCHEMATIC schematic diagram TSC6000 There are actually two types of IC cards: memory , memory type cards is a prepaid telephone card. A set of counter variables is declared and an array to hold bitmap for custom rupee character is declared. An array holding the recharge amounts is declared. The pins where tactile switch, D0 bit if Encoder IC and relay are connected are assigned to variables b1, RFin and relay. Get instant insight into any electronic component. HT12D decoder IC The signal carrying low energy balance alert is detected by the RF receiver and is passed to the HT12D decoder. \ptq4Ws_VfA^+U So, as the voltage detected and digitized from A0 of Arduino MEGA exceeds the reference value 300, a single blink of Imp / kWh LED of front panel of EEM is recorded and a variable in the program code holding the number of recharged units in the form of number of blinks or pulses is decremented by one. A message prompting user to recharge energy balance is flashed on LCD. He has the EEPROM IC as the smart energy recharge device. If pos variable is set to 20, digital input from buttons is read and a message indicating recharge process is shown on LCD. Again, message is sent to an imaginary 91xxxxxxxxxx number which can be replaced with any real mobile number. If user presses button connected to A2 pin, the pos variable is set to 20 and LCD screen is cleared. The relay and D0 bit of RF encoder is set to LOW logic by default. 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 , . mySerial.println(AT+CMGF=1); //Sets the GSM Module in Text Mode, delay(1000); // Delay of 1000 milli seconds or 1 second. However, meters with 1000 impulse/KWH rating are gaining popularity nowadays. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> For simplicity, it is used as an alternative to the smart cards. The customer , MEASURE TODAY. So the meter rating is confirmed to be 3200 impulse/KWH. If you are currently using MSC family, Wired /12 pin 7 segment display layout -hs-5461BS2, 2007 - prepaid energy meter with gsm modem, 2005 - trusted platform module logic circuit, 2005 - CIRCUIT DIAGRAM FOR gsm modem with sim 300, 2003 - CIRCUIT DIAGRAM FOR gsm modem with sim 300, 2006 - CIRCUIT DIAGRAM FOR gsm modem with sim 300. When the available electricity consumption is left 30 percent, the Arduino Mega raises the D0 bit of the RF decoder high sending an acknowledgement of low energy balance to the recharge station. 4-Switch Keypad The tactile switches are used to form the keypad. Inside the function beginTransmission() method from wire library is used to initiate serial communication. Thus the encoded signal is a serialized 12-bit parallel data comprising of 4-bit data to be transferred appended with the address byte. The recharge station and prepaid energy meter are shown connected to each via RF module in the project so that prepaid energy meter could send an alert of exhausting recharge amount to the recharge station and the recharge station could send an SMS to the consumer to make a recharge soon again. When light falls on LDR, its resistance remains low while when there is absence of light its resistance is high. Usually the households have post paid electricity connections. The LCD (Liquid Crystal , the display and change the settings in the meter using two push buttons. Certain application using semiconductor products may involve , . The pin interfacing with the D0 bit of RF Decoder is assigned to variable RFin. The RF receiver module has 8 pins and has following pin configuration . Yn6q7/|?~ To set the oscillator frequency, a resistor from 1M is connected between pin 15 and 16 of the HT12E encoder IC. sensorValue =analogRead(A0)*(5.0/1023.0)*100; This ends the Arduino sketch for Prepaid Energy Meter. The write() method is used to write address location and endTransmission() method is used to close the transmission. The cause of getting high bills is usually not the high electricity rates but is the unconscious overuse of electricity. The library works as expected and needs no changes or modifications. A 47 K resistor is connected between the pins 14 and 15 of the decoder IC to match the RF frequency. Placing the values in above equation , Meter rating in impulse/KWH = (60 * 5.333 * 1000)/100. For testing the real impulse/KWH rating of the meter, a load of fixed wattage should be connected with the meter and supplied power for a minute. GeoCore solution makes it easy to enhance almost ANY application with location information. Thus, energy , meter can be configured to measure both imported and exported energy . 26 GSM System Survey (MBL, Abstract: internal circuit design diagram of automatic ticket vending machine what is sim card and its circuit diagram smart parking circuit diagram Sim card diagram IC 7400 SERIES list multi sim cards reader gsm door lock circuit diagram circuit diagram of keypad door lock system sim card reader A loop() function is called in which the recharge balance is read from the EEPROM memory locations and recharge balance is shown on the LCD screen. The standard commands of the GSM module are passed to it using virtual serial port. mySerial.println(Use electricity wisely to avoid rising costs.); This ends the Arduino sketch for Recharge Station. The pins 5 and 6 of the EEPROM IC connect to the pin 20 and 21 of the Arduino Mega respectively where pin 20 of the board is configured to SDA and pin 21 is configured to SCL. The program code will run on the Arduino UNO. A message is sent to the consumer confirming the recharge information using the GSM module. Only D0 data bit of encoder needs to be used for sending alert of low energy balance to the recharge station. 10 Figure 2. QgJ5e#)L&9ueRaUY!-Y Text: 14.4K GSM circuit switched data SMA antenna connector and SIM socket Serial interface supports DTE , accordance with GSM 07.05. |U|]|9YwB+lcG/0fL'.TS3>+l'}]r4] M~}CMM eeprom_i2c_write(B01010000, 1, teriff[i]); puls=(3200*r)/6; //6 rupees per UNIT assumption. Copyright 2022 WTWH Media LLC. The Arduino IDE is used to write the Arduino sketches for recharge station and prepaid energy meter and AVR Dude is utilized to burnt program codes to the microcontroller boards. Text: operate on a GSM network. byte eeprom_i2c_read(int address, int from_addr) {. The pin configuration of transmitter module is as follows-. Relay Circuit A 12V 2A relay will be used to control the main supplies. When a load will be switched ON and start consuming electricity, current will also pass through the prepaid energy meter device. HT12D is capable of decoding 12 bits, out of them 8 are address bits and 4 are data bits. The loads will be connected between the phase wire and the NO pin of the relay. 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. The memory card storing the recharge information can connect to the Arduino board via I2C protocol implemented on A4 and A5 pins of the Arduino. The circuit is built on Arduino Mega and has different components and modules connected to the board in the following manner . 1) Electricity Recharge Station An embedded device that could write recharge information to a memory system. Integration period Energy type 5 min. All the other ICs and modules are powered by 5V DC from the Arduino board. The LCD is initialized using LCD.begin() function and initial messages indicating name of the project are flashed on the screen. The AT2402 is 2Kb memory stick that connects with any microcontroller on I2C interface. is received at pin 2 of the module and passed on to the antenna from pin 4 of the module. The 8-pin IC has the following pin configuration . The number of units recharged are calculated by dividing by 6 the recharge amount held by variable r. The recharge units are converted to number of pulses by multiplying by 3200 which is the impulse/KWH rating of EEM. For making the recharge, he has to plug in the memory card to Recharge Station and press button interfaced to A2 pin of Arduino UNO. 25 GSM System Survey , . 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 main supply is resumed as the energy balance is recharged and read by the meter from recharged EEPROM. Have a technical question about an article or other engineering questions? Some initial messages are flashed on the LCD screen. The AT24C02 EEPROM IC serves as the smart recharge device in the project. The 18V DC is converted to 5V DC using 7805 voltage regulator which is supplied to rest of the components. 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 number of blinks in a minute during running supply to the load should be calculated. The consumer can navigate to ascending order of recharge packages by pressing button connected to A1 pin of Arduino UNO while can navigate to descending order of recharge packages by pressing button connected to A0 pin of Arduino UNO. The standard open-source library for interfacing LCD with Arduino UNO is used in the project. The pins are used for addressing individual EEPROMs when multiple EEPROMs connect to a single microcontroller at the same time. If user presses button connected to A0 pin, the recharge balance in rupees and pulses is read from the EEPROM and saved to r and s variables respectively. The recharge balance is shown on the LCD panel of the prepaid energy meter. The message is sent to an imaginary 91xxxxxxxxxx number which can be replaced with any real mobile number. endobj The 18V DC is provided to the GSM module. 9l L/2RDsw*Z[Pbgkt;Rx= The memory stick used as alternative to the smart recharge card is AT2402. 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.

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