Potomac MesoSystems has developed a signal processing, wireless communication, and power platform like that shown on the right for amperometric gas sensors. The overall sensor size is 20mm x 28 mm x 7mm and wireless connectivity is provided by a 2.4 GHz transceiver. In this example the sensor is optimized for CO detection.
Amperometric sensors exhibit very low power consumption, and this sensor platform was designed to allow 1 year of operation from a single 16mm coin cell battery. The miniature control module contains a MSP430G2553 microcontroller and dual op amp signal conditioning for sensor signals in microamp range. |
Top view of a wireless gas sensor showing the sensing element and an integrated module containing signal processing and control electronics.
Bottom view of the gas sensor showing coin cell battery holder (CR1632) and 2.4 GHz wireless transceiver.
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