Sunday, June 16, 2024

Ultra-Low Power Sensor For Measuring Outdoor Air Quality

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It has small size and performs selective ozone detection, ideal for integration in wearables, smartphones and industrial monitoring devices

Ozone gas is harmful to our health as its presence in the air is known to cause significant degradation of outdoor air quality.

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However, with the help of the ZMOD4510 Outdoor Air Quality (OAQ) gas sensor platform, the ozone gas level can be measured, offering the user to check the air quality in their surrounding environment. The miniature digital OAQ sensor solution comes with an IP67-qualified waterproof package and a new AI-based algorithm.

Based on ultra-low-power firmware by Renesas, the ZMOD4510 can detect ozone concentration levels as low as 20 parts per billion (ppb) without reporting on other pollutants. During this selective measurement, power consumption is under 200 uW, which allows devices such as smartwatches, phones and smoke detectors to monitor for harmful ozone gasses typically found outdoors but can enter indoors through open windows and doors. It is an ideal solution for mobile and wearable devices, as well as, industrial applications such as wireless security cameras and parking meters.

The new waterproof packaging allows the sensor to operate in harsh and submersible environments with superior accuracy and high performance while eliminating the need for expensive waterproofing systems. It is fully calibrated in the hydrophobic and oleophobic package, allowing customers to apply a conformal coating on their circuitry rather than adding an external membrane to the module.

“Measuring outdoor air quality is about location, location, location, as levels can vary dramatically from street to street and even on opposite sides of the same street,” said Uwe Guenther, Senior Director, Sensing Solutions, IoT and Infrastructure Business Unit at Renesas. “The enhanced ZMOD4510 gives manufacturers the selective high-precision sensing, ultra-small size, and long battery life they need for battery-powered devices like smartwatches and phones that offer customers a convenient and customised view of their immediate air quality environment.”

The ZMOD4510 is calibrated to the U.S. Environmental Agency’s (EPA) Air Quality Index for measuring ozone, making it highly resistant to siloxanes and enabling reliable use in harsh environments.

Measuring just 3mm x 3mm x 0.9mm in an LGA package, the ZMOD4510 platform is available now from Renesas Electronics Corporation in both a standard and IP67-rated sensor package.


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