Tethir led consortium wins £0.5m UK grant for IOT sensor networks for forest fire detection

25th February 2021


Innovate UK is backing a technology breakthrough that puts Pyreos and Tethir, along with their academic partners, Imperial College London and King’s College London, at the forefront of the fight against one of the world’s biggest carbon emitters; wildfires. The grant of £500k from Innovate UK supports the development of the first widely deployable ultra-low power fire warning system for power companies.

Pyreos’s world leadership in the supply of integrated digital ezPyroTM SMD pyroelectric sensor subsystems for gas, flame and analysis applications and Tethir’s expertise in optoelectronic systems provide the driving forces behind the innovative approach. The Department of Materials at Imperial College London, unmatched for its pyroelectric detector science, is assisting the technical development. The project, led by Tethir, benefits from the expertise of the Leverhulme Centre for Wildfires, an institute internationally recognised for its scientific excellence in wildfire research.


'Power line operators face billion dollar liabilities'


The new solution is designed for rapid detection of wildfires that occur due to power line failure. These fires are often the most damaging because they typically occur in high winds. In California alone over a 6-year period, 1,500 wildfires started in the power line corridors of one utility company. Power line operators worldwide face billion dollar liabilities and this scenario has created a $100m market opportunity for detection systems.


Sensors based on visible/thermal imagers have not been adopted at scale because they are expensive, power-hungry and typically only detect wildfires once they have grown to an unstoppable size. By using networks of low cost, ultra-low power infrared detectors fires can be detected at long ranges in the first few minutes after ignition.

Wildfires that still occupy less than an acre give firefighters a chance of extinguishing them before they cause extensive damage. Many wildfires occur in remote areas far from an accessible power supply and telecommunications infrastructure, so low power consumption, reliability and power/comms-autonomy are key.

Pyreos brings unique semiconductor-scale processes for supplying the lowest cost detectors worldwide. Their deep experience in industrial and forest fire detection is deployed in its IoT detector range, including cancellation of stray sunlight, heat and other interference.

Tethir produces novel, highly-efficient non-imaging radiation-collectors (NIRCs) for applications ranging from solar power to laser detection. Tethir's optics will give a much greater detection range using current Pyreos detectors, extending the standard detection range of a Pyreos ezPyro TO39 Flame detector from 65m (non-optimised) to about 1.7km. Further detection range increases are planned. Dr. John Phair, CTO at Pyreos, said: ‘This new investment from Innovate UK represents another important step forward for our company. By combining Tethir’s advanced optics with Pyreos’ small, ultra-low power digital pyroelectric sensors, it will be possible to develop and manufacture a wildfire detection system with class-leading detection capabilities.’


Tethir’s founder and CEO, Alex Hudson, said: ‘We’re delighted to work with Pyreos on this development. Their extensive fire detection skills combined with their lowest cost detector technology provides the smallest, cheapest ultra-low power detector available.’

Wildfires cause catastrophic damage worldwide, accounting for 20% of global carbon emissions. The problem, exacerbated by climate change, is deteriorating with many previously unaffected countries now under threat.

Today, severe wildfires (such as those in USA, Australia and Spain) claim hundreds of lives and cause extensive financial damage. In California in 2020, 10,000 fires burned 1.8m ha or more than 4% of the state’s land area. Costs exceeded $12Bn. Meanwhile, over 20% of China’s landmass is forest and fire is a recognised problem. Northern European countries experienced a 200x increase in area burned in 2018. Even the normally-temperate UK is being badly affected with a blaze raging in February 2021 across a swathe of Dartmoor.

The consortium already has support from a US utility company and is seeking close collaboration with end-user partners to help optimise the system for deployment worldwide. Interested partners should email J​ ohn.phair@pyreos.com​.

About Pyreos Pyreos was formed in 2007 and is a leader in miniature, rugged, pyroelectric, mid-infrared sensors and detectors. The company’s integrated products respond faster, improve responsivity and minimise power consumption. Built in world-class foundries, the thin-film sensor components detect and analyse composition in gas, flame, food safety and oil applications and enable the creation of smaller, higher-performance IR sensors, sensor modules and analysers which are easier to develop and need less calibration.

About Tethir Tethir brings major developments in optical technology to a number of fields. It has a toolkit of optical designs that make a significant impact to the performance of devices across defence, telecommunications and fire detection applications.

About Imperial College

Imperial College is consistently ranked among the world’s top 10 universities. Its discoveries, collaborations and networks are transforming lives around the globe.

About King’s College King’s College has a commitment to exceptional education, impactful research and genuine service to society, creating positive change in communities, both in London and on the world stage.

Editorial Contacts: Publitek Nayl D’Souza nayl.dsouza@publitek.com T: +44 (0)​ ​203 813 6423 Pyreos Ltd 14-16, The Curve, 32, Research Avenue North, Heriot Watt Research Park, Edinburgh, EH14 4AP, UK info@pyreos.com


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