So the eem is known as static energy meter in eem the accurate functioning is controlled by a specially designed ic called asic application specified integrated circuit. This circuit is designed around digital ic 7400 which is. Pdf automatic energy meter reading using smart energy meter. We modify them from a normal dc digital voltage meter circuit to smart multimeter. Amr continuously monitor and record the energy meter. Microcontroller based wireless energy meter working.
The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Smeter circuits radio receivers amateur radio archive. This paper presents a single phase electrical energy meter based on a microcontroller from microchip technology inc. Design and implementation of wireless energy meter system for. We have used this sensor to make digital ammeter circuit using pic microcontroller and acs712 circuit diagram circuit diagram for iot based energy meter using arduino and nodemcu is given above, connect esp12 as below connect rx of esp12 tx of arduino. Energy meters are the basic part to measure the power consumption. Thirdly, the user friendly display in the digital meters makes energy reading from time to time very easy. Working principle of digital frequency meter schematic diagram of the ph meter heres the simple schematic diagram of the ph meter circuit. The block diagram of microcontroller based electricity consumption meter is shown in the figure which consists of different blocks as mentioned above. It is used in domestic and industrial ac circuit for measuring the power consumption. Try to build this project to use it really worth and fully enjoy.
The wattmeter is an instrument for measuring the electric power or the supply rate of electrical energy in watts of any given circuit. Electronic meters consists of current and voltage sensors which sense the amount of current and voltage consumed and this analog signal is sampled and digitized using adcs. Jul 25, 2018 watthour meter is in fact a measuring device which can evaluate and records the electrical power passing through a circuit in a certain time. In the above diagram, i shown an utility pole form which i get supply to kilowatt hour e meter and after that i get supply form energy meter. The meter supports activereactiveapparent energy measurement, and it supports different communication. The proposed energy meter system can incorporate with an embedded microcontroller and pzem004t ac digital multifunction meter designed by peacefair. Wireless energy meter is a system developed to serve as a basic singlephase energy meter with advanced functionalities such as peak hour setting, peak load setting wireless reading transmission. Electric current 215404 draw a circuit diagram using a pdf. The ade7752b1 is a high accuracy polyphase electrical energy measurement ic. An4164, a singlephase energy meter with capacitive power. So energy meters measure the rapid voltage and currents, calculate their product and give instantaneous power. Prepaymentprepaid energy meter introduction and working. For the circuit in figure 3, the approximate drive provided approximately 12 ma.
To better understand the working of microcontroller based wireless energy meter, we must the working of each block of electronic energy meter. Ade7752b 3phase, 3wire, and 4wire energy metering ic. Ade7752b 3phase, 3wire, and 4wire energy metering ic with. Voltage terminals 2, 5 and 8 must be tightened down for meter types u1281, u1289, u389a, in order to establish a connection between the current and voltage circuits. Pout out going phase or live to the home main distribution board. It is used everywhere, no matter how big or small consumption it is. By implementing the watthour meter, we can know how much amount of electrical energy is used by a consumer or a residence or an electrically powered device or a business. Linear resistance meter circuit diagrams schematics pdf. The voltage path is directly connected inside the meter with the current path and can not be fused separately. You can wire analog and digital energy meter using this method.
By implementing the watthour meter, we can know how much amount of electrical energy is used by a consumer or a residence or an electrically powered. The only analog circuitry used in the ade7752b is in the analogto digital converters adcs and reference circuit. Jul 25, 2018 energy meters are the basic part to measure the power consumption. Electricity meter integrated circuits and reference designs. Electricity meter integrated circuits and reference. A wiring diagram is a simple visual representation of the physical connections and physical layout of an electrical system or circuit. Energy pulses are generated and also indicated via leds on the board. Design and implementation of wireless energy meter system. How electricity reaches our homes from the power station. Mar 27, 2020 i am showing you a digital multimeter circuit using icl7107. Single phase electricity explained wiring diagram energy meter. Electrical energy meters principles and applications. The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. A 3phase power meter based on the ade7752 application.
Threephase ctpt operated keypad energy meter operation manual. It shows how the electrical wires are interconnected and can also show where fixtures and components may be connected to the system. The meter complies with dlmscosem and is certified with dlms certificate. The basic unit of power is watts and it is measured by using a watt meter. Implementation of a singlephase electronic watthour. The meter will read the money from the prepaid card and will recharge the meter. Watthour meter is in fact a measuring device which can evaluate and records the electrical power passing through a circuit in a certain time. Analog devices is a pioneer in electronic energy metering through our early introduction of energy metrology components.
In diagram i use red coler wire for line phase and black for neutral wire. The circuit shown in figure1 is the circuit of energy metering. Besides that, energy consumption is stored in the microcontrollers eprom memory. If one uses one kilowatt in onehour duration, one unit of energy gets consumed. Replaces multiple analog meters through single digital meter 1ph or 3ph volt or amps display digital panel meters 1ph digital frequency meter 4 digits, seven segments, 15mm height, bright red led display, 0. Digital voltmeter circuit diagram using icl7107 7106 with pcb here is simple icl7017 digital voltmeter circuit easy to build and cheap because it is high technology, by single ic,small number, along by led 3 digit. Bidirectional metering is available to customers who install renewable fuel generators such as solar, wind, hydro or biomass sources and operate the generator in parallel with their electric companys electrical system.
Replaces multiple analog meters through single digital meter 1ph or 3ph volt or amps display digital panel meters. Notice in the diagram at the bottom of page 57 that a multielement tube is used. Read about ammeter design dc metering circuits in our free electronics textbook network sites. Here we discuss the construction and working principle of induction type energy meter. Apr 17, 2014 energy meter an electricity meter or energy meter is a device that measures the amount of electric energy consumed by a residance,business or an electrically powered device. The ade7752b specifications surpass the accuracy requirements as quoted in the iec6205321 standard. Secondly, the orientation problem associated with electromechanical energy meter is completely a nonissue in a digital energy meter. The below figure shows the watthour meter circuit implemented by using atmel avr microcontroller. Energy meter an electricity meter or energy meter is a device that measures the amount of electric energy consumed by a residance,business or an electrically powered device. The circuit shown in figure1 is the circuit of energy. The entire circuit of noise meter has been designe d and fabricated using sound. Want to do research and project for this digital energy meter thank my email.
For a deeper understanding of this concept, the following description about the energy meter gives complete circuit details and its connections using a microcontroller. The design equations for the power supply are given in. Electricity meters are typically calibrated in billing units, the most common one being the kilowatt hour. The led digital voltmeter working with circuit diagram can be easily understood with this simple overview description below.
Increasingly, the use of automated meter reading amr and advanced meter infrastructure ami systems has intensified the requirements for efficient meter communications systems, and once again adi technology is at the forefront. The following is a basic explanation of how bidirectional metering works. Implementation of a singlephase electronic watthour meter. Aug 14, 2019 to read left to right on increasing signal strength, the meter deflects from right to left when current is increased. For example, in this application, the number of pulses generated per kwh is set to 1600 for active and reactive energies. Utilities are one of the electrical departments, which install these instruments at every place like homes, industries, organizations, commercial buildings to charge for the electricity consumption by loads such as lights, fans, refrigerator, and other home appliances. Ammeter design dc metering circuits electronics textbook. The at89s52 is a lowpower, highperformance cmos 8bit microcontroller with 8k bytes of insystem. Electronic energy meter is based on digital micro technology dmt and uses no moving parts. Microcontroller unit continuously monitor the energy meter and pulses display on lcd. Figure 2 show that microcontroller unit is interface with energy meter and lcd. Figure 5 circuit diagram of prepaid energy meter to the above diagram gsm technology is included to send messages to the customer about the balance amount and if the amount is totally used. Increasingly, the use of automated meter reading amr and advanced meter infrastructure ami systems has intensified the requirements for efficient meter communications systems.
In most meters, the pulses per kwh decide this energy tick. Single phase electricity explained wiring diagram energy. Implementation of a singlephase electronic watthour meter using msp430afe2xx rev. The digital signals are then processed using a dsp or a microcontroller, which then displays the amount of energy consumed on a lcd or a led display.
Digital power meter for reading home wattage consumption. How to wire single phase kwh energy meter electrical online 4u. Our integrated circuits and reference designs help you create smarter electricity meters with advanced security and connectivity features to meet system design requirements. Threephase ctpt operated keypad energy meter operation. Relay circuits are interfaced with the energy meter and. The voltage intended to measure is primarily converted into digital equivalent using dual slope type analog to digital converter inside the ic7107. Ohmmeter circuit diagram and working principle pdf.
Then, the energy meter calibration board must be connected to the meter. The following is the electrical interface circuit for the meter. Whether for single or polyphase meters we have the right ingredients for accurate energy measurement and efficient communicat. Connected to the battery charging circuit of an automobile, this meter is able to indicate a charging condition current flowing from generator to battery or a discharging condition current flowing from. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. Block diagram of gsm based automatic energy meter reading system 4 4. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation.
For example, measure dc voltage, acv, dc amp meter, ac amp meter and as the ohms meter, etc. Referring to the proposed digital power meter circuit above, we can see the ic 4060 configured as a voltage to frequency converter, while the ic mm74c926 forms a frequency counter stage capable of counting upto 9999 pulses continuously through the connected 4nos of 7 segment common cathode displays. In the above graphics and diagrams, pin incoming phase or live from the source supply voltage. When maximum use is made, relay will cut off and controller has to be reset. Schematics for the v oltage sensing circuit and the current sensing circuit have also been provided. The energy is the total power consumed and utilised by the load at a particular interval of time. Sometimes the s meter is used with a separate amplifier circuit. This electronic meter does not possess any rotating parts, and the energy consumption can be easily read from a fourdigit display. Hello sir, can you please email me the entire circuit diagram together with the software code. The connection and circuit diagram of singlephase 3phase,4 wire kwh meter digital or analog energy meter from the supply to the main distribution board. Wiring diagram kwh meter digital datasheet, cross reference, circuit and application notes in pdf format.
This dc voltage source can be generated in several ways. Jun 30, 2018 working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation and measurement for electrical, electronics, extc. Pdf a single phase microcontroller based energy meter. Looking at the simple circuit diagram or schematic on the right, a voltage digital multimeter ac dc voltmeter ammeter ohmmeter volt tester meter xl830l. Energy meter circuit detailed project with source code.
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