Feature: Energy harvesting
Figure 1: Comparison of power densities of energy-harvesting sources
concerns, driving the adoption of wireless HVAC systems in retrofit projects and areas with challenging power connections, offering precise control for optimal energy efficiency and improved comfort.
Wireless sensing and telematics systems Wireless sensing leverages sensor networks connected through wireless protocols for remote monitoring of environmental conditions like temperature, pressure and air quality across sectors including industrial, aerospace and transportation. In automotive applications, energy-harvesting systems power
hardware with energy harvested from vehicle motion, engine heat and suspension movements.
Figure 2: Major technologies in the energy-harvesting market Similarly, in smart homes and building automation, energy-
harvesting systems enable sensors to monitor and actuators to control functions like lighting, HVAC and security.
Asset-tracking systems Asset tracking involves monitoring physical assets by scanning barcodes via RFID or GPS tags. RF sensors and tags have diverse applications, from inventory
and fleet management to equipment tracking in hospitals and retail settings. Tey also monitor buildings and bridges for maintenance purposes. Traditional RFID tags rely on batteries with limited lifespans, resulting in high replacement costs. Energy harvesting, including
Figure 3: How changes in revenue sources can affect the energy-harvesting ecosystem
www.electronicsworld.co.uk April 2024 35
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