Feature: Displays [Image: Hu Jiaru for Unsplash]
which means each machine must have its own network – and the right communications technology is key here. For example, LoRa is a long-range, low-power communications technology, which thanks to its modulation scheme and frequency offers great signal penetration in buildings @ 868MHz. LoRa’s low- data modulation technique is ideal for IoT applications and is particularly suitable for larger buildings and shopping centres. Also, narrowband IOT (NB-IOT) and CATM1 LTE from
major telco providers offer low data speeds and connect directly to a cellular backbone using low power. These would be ideal for applications such as monitoring reservoir levels where data requirements are modest and sensors run from long-life batteries or batteryless solutions using energy harvesting and supercapacitor technologies. It would be a case of the embedded processor in the monitor waking up, checking water levels and sending the data where required. Similar applications are found in the agricultural industry, where long operation life is required over a wide temperature range.
No touching, please As experts in display technology, we are also mindful of the impact low-touch/no-touch setups will have on touchscreens and touch displays, which are so pervasive today. Technology exists today that can take away the need for touch – whether controlling screens through personal electronic devices, making use of QR codes, or even implementing haptic control already seen in some cars and laptops. Yet, we will still require displays, say, to present information and/or advertising, among other uses. Covid is presenting new challenges to society and,
since it is here to stay, it will continue to do so. These challenges represent opportunities to grow and, importantly, innovate. Low-touch/no-touch is at the forefront of this new landscape, and other technological advances will doubtless be harnessed to enable these innovations.
www.electronicsworld.co.uk February 2023 29
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