Unfortunately, there is no information from the manufacturer how the component works or how accurate the measurement is. Adding a less than unity power factor load to the calibration. Ac energy meter calculation using acs712 arduino forum. The circuit consists of arduino which is the brain of the project, 16x2 lcd display, ic 7404 inverter and one. The diy digital ac watt meter is an arduino mega 2560 microcontroller controlled system that reads current and voltage in an ac system. I used arduino as the heart of this project because it. The power sensor unit allows the current to flow through a device whose power consumption needs to be measured. How to build an arduino energy monitor measuring current only.
Reactive or imaginary power, is a measure of the power going back and forth between the. The arduino sketch is the piece of software that runs on the arduino. Energy monitoring with arduino and current clamp sensor olimex. As any other transformer snscurrentct0100a has primary and secondary windings, the ratio is 100. Elegoo ac 100v240v converter adapter dc 9v 1a power supply us plug 5. It is a simple digital voltmeter, which can safely measure input dc voltages in 0 to 30v range. Power energy meter using arduino use arduino for projects. Pzem004t is the best for the purpose of the diy project, where we need to measure the voltage, current and power using arduinoesp8266raspberry pi like opensource platform. Just the beginning of a ac power meter project im working on. Alternately, you can connect the ct directly onto your homes mains supply and. Voltage and current signal are sampled and analysed by using arduino due as control unit, where the instantaneous power. Im a member of the model aircraft c19lub fms spaarnwoude near amsterdam and i started building and flying drones.
This project shows how to build an arduino based electricity consumption monitor using the industruino proto platform. Power quality meter pq monitor using arduino use arduino. An introduction to ac power learn openenergymonitor. Block diagram of arduino based watt meter the power sensor unit allows the current to flow through a device whose power consumption needs to be measured. Proto power meter measuring ac power with the industruino proto. Analog current meter module ac 05a ammeter sensor board for arduino overview. Arduino ac voltmeter project with code and circuit diagram. It works perfectly connected to a simple signal conditioning circuit that goes into an analog input on the arduino. Pzem004t having the ability to measure electrical parameters such as voltage, current, active power and energy, power factor and frequncy.
Output is displayed in dbm, watts nw, uw, mw and w range as well as input voltage. Adding a less than unity power factor load to the calibration regimen is a good idea if you can, such as a switching power supply or large motor. In this research study, an accurate power meter is to be produced by using instantaneous power calculation method from the signal obtained from voltage and current sensors. It measures voltage with an ac to ac power adapter and current with a clip on ct sensor, making the setup quite safe as no high voltage work is needed. I currently own an octocopter with 1 m span and added a camera with gimbal and a live video link to it.
The ac current passing through the load is sensed by the current sensor module acs712 and fed to the analog pin a0 of the arduino wemos board. Hence a 5v zener diode is connected to ensure safety of arduino which breakdowns in case this voltage exceeded 5v. A front panel selectorswitch provides two modes of operation. I purchased this as part of a project to build an ac power meter with an arduino. Connect the power supply, multimeter current range and wattmeter in series. When the first load having a rating of 200watts is. This time measurements performed on single ac power grid frequency. I want to create a power meter and use arduino to log the info and send to the web. What is it an rf power meter is a device which you can use to measure the power a transmitter outputs. This circuit use a highside current shunt and power monitor with an i2c interface ina209 from texas instruments and an arduino uno as microcontroller. It uses parts of the its standard emontx hardware and software to report the ac apparent power consumption, based on measurements of a current transformer as in the picture on the left. This electricity sensor is based on ta12100 current transformer, which can transform ac signals of large current into small amplitude signals. Arduino frequency meter using 16x2 display homemade. Aug 21, 20 the shield is powered thanks to arduinos 12 v.
Murata power solutions acm20 series fourfunction ac power meters display the most critical measurements in mainspowered equipment. The calculated power and energy by the arduino wemos is displayed on a 0. Instead of using lcd display module the meter connects to a pc via usb port and displays measurements on a computer via usb rf power meter software. Figure4a hardware setup for power measurement single load. The original project also allows to measure 3 phase andor real power, but for our prototype here we are only measuring the current of one phase, not its voltage which would require an ac ac adaptor. The atmel 90e24 is a complete energy management solution on a chip. Pzem004t specification price arduino library pinout.
Once the analog input is given to arduino, the measurement of power energy is done by arduino sketch. It calculates and displays the power, current, voltage and phase of a single phase ac circuit on a liquid cristal display lcd. This is all done using an arduino mega, a current sensor and an lcd. Arduino uno project, power quality meter, someone would call its pq monitor or pq analyzer. Arduino power meter electrical engineering stack exchange. This may seem dangerous, but we will use a noninvasive current transformer ct, so our arduino remains galvanically isolated from the high voltage ac. Thus, an interface with hardware and software is made easier with arduino sketch for power and energy measurement.
Like, a wattmeter built using arduino can easily be tweaked to monitor the results on serial monitor and plot a graph on serial plotter or add an sd card to automatically log the values of voltage, current and power at predefined intervals. Set the power supply in current limiting mode, first at 0 a. How to build an arduino energy monitor archived forum. The proposed setup can measure ranging from 35hz to 1 mhz. Arduino power meter there is also a video on youtube for this article. How to create an intelligent, web enabled, power meter with. Following my own style, id refer to already published materials whenever its possible. If you are going to be installing your power meter somewhere. Jan, 2019 now you know how the arduino measures and calculates the frequency. I had already published one blog devoted rms voltage measurements on full band 20 20. How to build an arduino energy monitor measuring mains current only. The proposed energy meter system can incorporate with an embedded microcontroller and pzem004t ac digital multifunction meter designed by peacefair. Here is a useful circuit for arduino lovers and experimenters.
I had already published one blog devoted rms voltage measurements on full band 20 20 000 hz audio signals. How to create an intelligent, web enabled, power meter. Apr 27, 2020 elegoo ac 100v240v converter adapter dc 9v 1a power supply us plug 5. You can use a voltage divider to knock down the voltage, and a diode or fullwave rectifier to take care of the negative voltage. As i have explained earlier, in this project i have used difference amplifier to step down.
The challenge is to measure an alternating current ac of a relatively high voltage 220240v with our direct current 5v arduino microcontroller. Nov 15, 2014 arduino uno project, power quality meter, someone would call its pq monitor or pq analyzer. The ac current passing through the load is sensed by the current sensor module acs712 and fed to the analog pin a0 of the arduinowemos board. Pzem004t is the best for the purpose of the diy project, where we need to measure the voltage, current and power using arduino esp8266raspberry pi like opensource platform. Acdc power meter with high accuracy and a wide measuring range the instrument described here, based on an arduino uno with the elektor prototyping shield, provides class ii insulation and displays several quantities directly on an lcd. It calculates and displays the power, current, voltage and phase.
For measuring current, you pass the current through a small value resistor to generate a small voltage, then using ohms law. As i have explained earlier, in this project i have used difference amplifier to step down voltage from 220 volt ac to less than 3. To carry out such a measurement reliable and accurate, a special wattmeter is required. Wattson board in an acrylic enclosure so that the ac wires. How to build an arduino energy monitor measuring mains voltage. How to build an arduino energy monitor measuring mains voltage and current. In a future implementation, as an extension to this project, i will design a new circuit based on voltage and current sensors for more accurate results. How i built an arduino energy monitor and data logger to collect energy data for. In case if the voltage reading is fluctuating then increase the value of c1 from 1uf to 10uf. Ac digital multi function smart meter using arduino and pzem004t. Arduino current power sensor measure current and power in an ac circuit in this article, we test about a very cheap inductive ac power meter. Since last few weeks i was thinking about making a project which can help me in keeping a track on my daily energy usages. Power meter project category is a curation of 20 web resources on, swr mega swr power meter, portable rf sniffer and power meter, converting zetagi hp201 for ham bands.
Set the power supply current at a value near the end of the wattmeters current range and read the multimeter iref and wattmeter iread. Check here for tutorials and more information about this library. How to build an arduino energy monitor measuring mains. The output signal taken from line 8 of the rj45 connector is connected to pin d6 rx of arduino while the input signal on line 7 of the rj45 connector is connected to pin. May 21, 2014 measures 21 parameters related to voltage, current and power. Arduino can get damage if voltage greater than 5v is fed to it. The arduino can be damaged by greater than 5v or by negative voltage. Im trying to build an ac powerenergy meter for some project of mine. The sensor unit produces two voltages, one is the voltage output from the power supply and another one is a voltage which ranges from 0 to 5v. The sketch is the software that runs on the arduino. This brought the idea of designing an energy meter. Arduino wattmeter voltage, current and power measurement. This is the hardware implementation for my atmel 90e24 power line monitor project. The meter will enable us to measure energy units consumed by 3 phase loads.
The circuit consists of arduino which is the brain of the project, 16x2 lcd display, ic 7404 inverter and one potentiometer for adjusting contrast of lcd display. This is a power monitoring system that measures voltage, current, power and power usage in watthours. It is difficult or sometimes even impossible to measure power and energy with ordinary multimeters. The arduino board can be powered from a standard 9v battery pack, as usual. Check here for more information about the 78m66 chip. As any other transformer snscurrentct0100a has primary. Open source smart energy monitor with some new features like terminal commands, readings logger, and data plotting. Now you can upload your sketch onto your arduino, if you havent uploaded a sketch before then follow this guide on getting started the code is shown in the attached images, here is the link to download the energy meter code because your setup, ct, resistors and input voltage may be different, there is a scaling factor in the sketch which you will need to change before you will get. It also a good idea to add some protection diodes with any voltmeter. Acdc power meter with high accuracy and a wide measuring range the instrument described here, based on an arduino uno with the elektor prototyping shield, provides class ii insulation and displays.
I measured the load and power factor using a p3 killawatt meter and then adjusted the scaling factors in the arduino code until they matched. Power monitoring system using arduino and lcd display. Analog current meter module ac 05a ammeter sensor board for arduino. But, lets analyze the serial line coming from the fr491 central controller. In many electrical projects, engineer directly deals with measurements with few basic requirements like high galvanic isolation paramet. A simple arduino wattmeter is designed in this project with the aim of measuring power consumed by small loads up to 12w. How to build an arduino energy monitor and data logger arduino. In this article, we test about a very cheap inductive ac power meter. Oct 17, 2017 3 phase smart energy meter using arduino.
Also, the same meter can connect or disconnect the 3 phase load remotely. Arduino frequency meter using 16x2 display homemade circuit. Smart energy monitor based on arduino arduino project hub. I used arduino as the heart of this project because it is very easy to write code in its ide and there are. It allows voltage, current, true power, apparent power, reactive power, power factor, phase angle, and line frequency to be accurately measured.
Building your own meters not only bring down the cost of testing, but also gives us room to ease the process of testing. Oct 22, 2015 an rf power meter is a device which you can use to measure the power a transmitter outputs. Because it is a first step towards designing ac voltage sensor with arduino and ac voltage detector meter with arduino. As you may well know, arduinos analog inputs can be used to measure dc voltage between 0 and 5v when using. Including voltage measurement via acac voltage adapter and current measurement via. In this project i am using a 30a current monitoring board. The team recently created an excellent tutorial showing how you to build an arduinobased electricity consumption monitor with the industruino proto platform. Today i will present you a project which lets you measure the voltage and current of an appliance, and display it together with the power and energy values. Acm20 series fourfunction ac power meters murata mouser. Because built in adc of arduino can not measure voltage more than 5 volt. This video guide shows you how to build your own energy meter for use around the home using an arudino and a current transformer ct. Ac digital multi function smart meter using arduino and. Still, now i am receiving emails and messages from people with questions regarding hardware and software modification for monitoring ac power consumption.
Reactive or imaginary power, is a measure of the power going back and forth between the load and the supply that does no useful work. Energy monitoring with arduino and current clamp sensor. I have been working extensively building web connected energy monitors using the esp8266 with arduino ide and various adcs and dedicated energy monitoring dsps atm90e26 and. In this article, we are going to discuss that how to design a 3 phase smart energy meter using arduino. This library enables the use of maxims 78m66 ac power meter connected thorough serial port to an arduino. Feb 17, 2014 this is a power monitoring system that measures voltage, current, power and power usage in watthours. Not quite, there is oversampling, which imply he has more than 10bits resolution, for 256 its 4 bits more. Combined with a voltage sensor and phase measurement it gives accurate power readings even for nonresistive loads like motors. Usb rf power meter is based on popular ad8307 watt meter ic and pic18f2550 microcontroller.
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