Approximating Pi

Stuart Woolley Blog, Technical

Imagine you’re stranded on a desert island and you really need to find a good approximation of π for some super machine that you’re building to make your escape. Perhaps it’s AC powered from a tidal source or wind generator and there are a couple of phase angle calculations you need to make for the flux capacitor to power up? …

Energy Usage Related Signals

Stuart Woolley Blog, Technical

The power spectrum of a signal is a fascinating way of digging deeper into understanding complex systems. If you recall your basic physics, a power spectrum shows how the power of a signal is distributed over its frequency range. I have a long standing interest in chaotic systems and fractals and came across a fascinating paper from 1975 by Voss …

Tuples

Frederico Almeida Blog, Technical

Basically, a tuple (Tuple in C#) is an ordered sequence, immutable, fixed-size and of heterogeneous objects, ie, each object being of a specific type. The tuples are not new in programming. They are already used in F#, Python and databases. However they are new to C#. The tuples were introduced in C# 4.0 with dynamic programming. To learn more, visit: …

LoRa

Messing About with LoRa

Liam Relihan Blog, Technical

In this post is to show how easy it is to do some very basic range testing with two LoRa devices, one operating as a transmitter and the other as a receiver.

Beat the heat

Beat the Heat

Annalisa Di Pietro Blog, Technical

How Predictive Maintenance and Thermal Imaging can ensure system efficiencies and minimise plant downtime. Heat is a form of energy, so where heat is lost, energy is lost. With 2020 energy targets looming, energy efficient grants are becoming more prevalent and companies are becoming more and more focused on green and sustainability initiatives. Unfortunately, a lot of companies are overlooking …

Water Meter

Water, water everywhere! – Part 3

Ian Ryan Blog, Technical

(New Meters Survey / Selection) The following parameters should be considered when carrying out a survey of water meter selection: Water meters should be sized based on their nominal flow rate. This is called the Qn and is given in cubic meters per hour (one cubic meter is 1,000 litres of water). Generally, the water meters’ maximum flow rate is …

Where does all the energy go?

Helene Ljubanic Blog, Technical

Dashing round the house switching off appliances like the dreaded immersion is one thing but what if you had hundreds of buildings to manage and thousands of energy-hungry appliances you had to check? That’s the scale of the problem facing many large businesses wanting to manage their energy usage wisely. Who’s using all this energy? Like any cost-conscious homeowner, the …

24 Hours data in manufacturing industry

24 hours of Data – Part 2

Simon McCormack Energy, Technical

This investigation was conducted on the Main Incomer for the site, which meant that the reactive (inductive) load could be separately monitored. The reactive loads are important because they cause the current to become out of phase with the voltage. It is the consumer who will pay for the additional current required for inductive electrical loads. Over the course of …

24 Hours data in manufacturing industry

24 hours of Data – Part 1

Simon McCormack Energy, Technical

Historically, energy analysis has always been time consuming. It required one to undertake hours of data collection over the period of a day, week or even a year. Once data was collected, one could then convert all consumption data into useable standard units i.e. kWh. At this point, data analysis could take place which would involve the production of percentage …

Benfords law & Energy Data: The SQL Banner

Benfords Law and Energy Data: The SQL

Martin Leenane Blog, Technical

I had some folks ask me what SQL query that I used to calculate the first digit frequency distribution in my previous post on Benfords Law. I copied it from this nice post on detecting fraud with Benfords Law. Note that if you have negative numbers or positive floating point numbers less than 1.0, you will get frequencies for the …