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. The meter will read the money from the prepaid card and will recharge the meter. The circuit shown in figure1 is the circuit of energy. We modify them from a normal dc digital voltage meter circuit to smart multimeter.
Besides that, energy consumption is stored in the microcontrollers eprom memory. 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. Working principle of digital frequency meter schematic diagram of the ph meter heres the simple schematic diagram of the ph meter circuit. 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. For the circuit in figure 3, the approximate drive provided approximately 12 ma. 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. Whether for single or polyphase meters we have the right ingredients for accurate energy measurement and efficient communicat. Prepaymentprepaid energy meter introduction and working. Single phase electricity explained wiring diagram energy. Energy meter circuit detailed project with source code. Threephase ctpt operated keypad energy meter operation. Design and implementation of wireless energy meter system. It is used everywhere, no matter how big or small consumption it is.
Pdf automatic energy meter reading using smart energy meter. Electricity meter integrated circuits and reference. In this video we learn electrical engineering basics by learning single phase meter wiring diagram. Energy pulses are generated and also indicated via leds on the board. The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. If one uses one kilowatt in onehour duration, one unit of energy gets consumed.
Electricity meters are typically calibrated in billing units, the most common one being the kilowatt hour. The proposed energy meter system can incorporate with an embedded microcontroller and pzem004t ac digital multifunction meter designed by peacefair. Electric current 215404 draw a circuit diagram using a pdf. 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. 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. Here we discuss the construction and working principle of induction type energy meter. 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 below figure shows the watthour meter circuit implemented by using atmel avr microcontroller. 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. Block diagram of gsm based automatic energy meter reading system 4 4. Ohmmeter circuit diagram and working principle pdf. Microcontroller unit continuously monitor the energy meter and pulses display on lcd. Single phase electricity explained wiring diagram energy meter. Wiring diagram kwh meter digital datasheet, cross reference, circuit and application notes in pdf format.
This paper presents a single phase electrical energy meter based on a microcontroller from microchip technology inc. Pout out going phase or live to the home main distribution board. Mar 27, 2020 i am showing you a digital multimeter circuit using icl7107. Design and implementation of wireless energy meter system for.
Ade7752b 3phase, 3wire, and 4wire energy metering ic with. The meter supports activereactiveapparent energy measurement, and it supports different communication. An4164, a singlephase energy meter with capacitive power. The following is the electrical interface circuit for the meter. Increasingly, the use of automated meter reading amr and advanced meter infrastructure ami systems has intensified the requirements for efficient meter communications systems. Watthour meter is in fact a measuring device which can evaluate and records the electrical power passing through a circuit in a certain time. Electronic energy meter is based on digital micro technology dmt and uses no moving parts. Then, the energy meter calibration board must be connected to the meter. The design equations for the power supply are given in. The energy is the total power consumed and utilised by the load at a particular interval of time. 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. Analog devices is a pioneer in electronic energy metering through our early introduction of energy metrology components.
Jul 25, 2018 energy meters are the basic part to measure the power consumption. Energy meters are the basic part to measure the power consumption. It is used in domestic and industrial ac circuit for measuring the power consumption. Thirdly, the user friendly display in the digital meters makes energy reading from time to time very easy. When maximum use is made, relay will cut off and controller has to be reset. Secondly, the orientation problem associated with electromechanical energy meter is completely a nonissue in a digital energy meter. How electricity reaches our homes from the power station.
This electronic meter does not possess any rotating parts, and the energy consumption can be easily read from a fourdigit display. Implementation of a singlephase electronic watthour 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. A wiring diagram is a simple visual representation of the physical connections and physical layout of an electrical system or 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. Aug 14, 2019 to read left to right on increasing signal strength, the meter deflects from right to left when current is increased. So energy meters measure the rapid voltage and currents, calculate their product and give instantaneous power. Digital power meter for reading home wattage consumption. The only analog circuitry used in the ade7752b is in the analogto digital converters adcs and reference circuit. Try to build this project to use it really worth and fully enjoy. Linear resistance meter circuit diagrams schematics pdf. Our integrated circuits and reference designs help you create smarter electricity meters with advanced security and connectivity features to meet system design requirements. 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. Want to do research and project for this digital energy meter thank my email.
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. The meter complies with dlmscosem and is certified with dlms certificate. Sometimes the s meter is used with a separate amplifier circuit. Implementation of a singlephase electronic watthour. Smeter circuits radio receivers amateur radio archive.
For example, measure dc voltage, acv, dc amp meter, ac amp meter and as the ohms meter, etc. Implementation of a singlephase electronic watthour meter using msp430afe2xx rev. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation. Microcontroller based wireless energy meter working. This circuit is designed around digital ic 7400 which is. The led digital voltmeter working with circuit diagram can be easily understood with this simple overview description below. 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. 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. Ade7752b 3phase, 3wire, and 4wire energy metering ic. Amr continuously monitor and record the energy meter. You can wire analog and digital energy meter using this method.
Iot based electricity energy meter using esp12 and arduino. Read about ammeter design dc metering circuits in our free electronics textbook network sites. In most meters, the pulses per kwh decide this energy tick. The ade7752b specifications surpass the accuracy requirements as quoted in the iec6205321 standard. The circuit shown in figure1 is the circuit of energy metering.
This dc voltage source can be generated in several ways. The voltage path is directly connected inside the meter with the current path and can not be fused separately. For a deeper understanding of this concept, the following description about the energy meter gives complete circuit details and its connections using a microcontroller. For example, in this application, the number of pulses generated per kwh is set to 1600 for active and reactive energies. Notice in the diagram at the bottom of page 57 that a multielement tube is used. The basic unit of power is watts and it is measured by using a watt meter. 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. Replaces multiple analog meters through single digital meter 1ph or 3ph volt or amps display digital panel meters. It shows how the electrical wires are interconnected and can also show where fixtures and components may be connected to the system. Figure 2 show that microcontroller unit is interface with energy meter and lcd. In diagram i use red coler wire for line phase and black for neutral wire. Pdf a single phase microcontroller based energy meter. Relay circuits are interfaced with the energy meter and. Electrical energy meters principles and applications.
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. The block diagram of microcontroller based electricity consumption meter is shown in the figure which consists of different blocks as mentioned above. Ammeter design dc metering circuits electronics textbook. The entire circuit of noise meter has been designe d and fabricated using sound.
The at89s52 is a lowpower, highperformance cmos 8bit microcontroller with 8k bytes of insystem. The ade7752b1 is a high accuracy polyphase electrical energy measurement ic. Electricity meter integrated circuits and reference designs. A 3phase power meter based on the ade7752 application. The following is a basic explanation of how bidirectional metering works. 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. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. 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. How to wire single phase kwh energy meter electrical online 4u.
The voltage intended to measure is primarily converted into digital equivalent using dual slope type analog to digital converter inside the ic7107. In the above graphics and diagrams, pin incoming phase or live from the source supply voltage. 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. Schematics for the v oltage sensing circuit and the current sensing circuit have also been provided. 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.
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