Silicon Labs has introduced two economical, easy-to-use development kits to accelerate the design of environmental and biometric sensing applications for a wide range of Internet of Things (IoT) products. Target applications for the kits include home security systems, smart thermostats, smoke detectors, weather stations, smart watches, fitness bands, heart-rate earphones and other wearable products.
The SLSTK3201A environmental sensing development kit streamlines the process of developing IoT products that sense relative humidity (RH), temperature, ultraviolet (UV) light, ambient light, proximity and human gestures. The development kit combines an EFM32 Zero Gecko microcontroller (MCU) starter kit with a sensor expansion board. It also features a gesture-controlled weather station application that tracks RH, temperature and UV index. Complete source code is available from Silicon Labs’ Simplicity Studio development platform, substantially reducing application development time.
Silicon Labs’ new biometric sensing development platform makes it easier to measure heart rate and blood oxygen level (Sp02), as well as UV index, relative humidity and temperature. The platform includes the BIOMETRIC-EXP-EVB expansion card featuring Silicon Labs’ Si114x optical sensors and Si701x/2x humidity and temperature sensors. The sensor card plugs directly into Silicon Labs’ EFM32 Wonder Gecko MCU starter kit. Silicon Labs also offers an optional wearable-form-factor HRM-GGG-PS board that supports wrist-based heart rate monitoring and connects to the biometric sensor card through an I2C mini-flex cable.
The environmental and biometric sensing kits operate on coin-cell batteries, demonstrating the ultra-low power consumption of Silicon Labs’ MCU and sensor IC products for battery-powered IoT and wearable applications. Each sensor expansion card features Silicon Labs’ TS3310 boost dc/dc converter to help minimize energy consumption.
“Highly accurate, ultra-low-power environmental and biometric sensing capabilities are as critical to today’s IoT and wearable applications as energy-friendly MCUs and standards-based wireless connectivity,” said Ross Sabolcik, vice president and general manager of Silicon Labs’ Analog, Power and Sensor products. “Silicon Labs’ sensor ICs offer the state of the art in humidity, temperature, ambient light, UV index and proximity sensing for the IoT. We enable developers to simplify their designs and speed time to market with an array of plug-and-play development kits coupled with our Simplicity Studio software tools.”
The Si701x/2x relative humidity and temperature sensors combine a single-chip, mixed-signal IC with a proven technique for measuring humidity using a polymer dielectric film. The integrated CMOS design ensures long-term reliability and superior ease of use, reducing manufacturing cost and complexity. An optional, factory-installed filter cover provides added protection against sensor contamination throughout the device’s entire lifetime. The Si701x/2x sensors offer best-in-class low-power consumption and exceptional RH sensing precision.
The Si1132/4x optical sensors are the industry’s first single-chip digital UV index sensor ICs designed to track UV sun exposure, heart rate and blood oximetry for wearable and smartphone products. The devices also provide ambient light and infrared (IR) proximity sensing capabilities for health and fitness applications. Conventional UV sensors combine UV-sensitive photodiodes with an external MCU, ADC and signal processing firmware. Silicon Labs is the first to combine all of this functionality into a single-chip, low-power solution offered in a small 2 mm x 2 mm package to help reduce the design’s footprint and bill of material (BOM) cost.