Technical paper from Analog Devices about wide range energy meter LTC2947 that eliminates the need for unique and expensive sense resistor values. Link here (PDF) Monitoring energy has similar benefits in many applications, not just solar. Handheld, rack-mounted and in-line energy meters are widely available and can be used by people such as facility managers […]
A detailed instructions of how to build an Energy Load manager from Open Electronics: When the instantaneous power consumption exceeds the set values, it selectively disconnects the users, in order to prevent the electric meter to cut the power to disconnect. The management of the electricity users at home, intended as the possibility to define […]
Boris Landoni from Open Electronics writes about a new open source energy meter project: In the first installment, you had the opportunity of learning about our energy meter, and of learning about its details, with special attention the technical ones. Our energy meter is based on the coupling – by means of two measuring transformers – […]
Another energy meter from Texas Instruments using MSP430AFE2xx. Link here (PDF) This application report describes the implementation of a single-phase electronic electricity meter using the Texas Instruments MSP430AFE2xx metering processors. It includes the necessary information with regard to metrology software and hardware procedures for this single chip implementation.
A good read from Atmel on their 8-bit microcontroller single-phase energy meter design. Link here (PDF) This application note describes a single-phase power/energy meter with tamper logic. The design measures active power, voltage, and current in a single-phase distribution environment. It differs from ordinary single-phase meters in that it uses two current transducers to measure […]
App note from Vishay about energy meter circuits and the use of leaded resistors on them. Link here (PDF) An electric meter or energy meter is a device that measures the amount of electrical energy supplied to a residence or business. It is also known as (k)Wh meter. The main unit of measurement in the […]
Simple 3 Phase Arduino energy meter from The DIY Life: Again, with this meter I was going for simplicity. Sure, for perfectly accurate measurements you need to measure both the supply current and voltage but for this application and in the interests of keeping the energy meter simple and safe – only requiring a non-contact […]
Kalle Löfgren writes: Today’s post will cover how I managed to get an Arduino pro mini (3.3V) to sniff the energy meters SPI and transmit the data wirelessly with a nRF24L01+ to an Arduino Nano connected to a computer. The neat thing with this setup is that the Arduino pro mini and the nRF fits […]
Single phase energy meter using XMEGA A (PDF!): AVR1631 single-phase energy meter design is based on the Atmel XMEGA® A4U microcontroller. This design is a lowcost solution considering the entire requirement for low-cost energy meter discussed in the previous sections.