ORLANDO, Fla. -- Sony's SmartWatch 3 is PNI Sensor's first major design win for its SENtral, sensor fusion coprocessor. To help the rest of the world catch up to Sony, PNI Sensor Corp. (Santa Rosa, Calif.) is releasing the world's first complete wearable development kit this week at the Consumer Electronics Show (CES, Jan. 6-8, Las Vegas). The tiny circuit board integrates a PNI's smart SENtral sensor hub, all necessary MEMS sensors and sensor-fusion algorithms, a programmable ARM processor and low-power Bluetooth, all in a form factor the size of a bracelet.
"I believe the value in the wearables will come from data analytics," CEO Becky Oh told EE Times. "My hope is that tools like the SENtrode will help bring the next killer application to the market faster by 'democratizing innovation.' "
Small version of SENtrode all-in-one wearable board contraining all you need for a smartwatch or other IoT.
The SENtrode is small enough to base a smart watch or wellness monitor on. SENtrode is also available is a larger form factor suitable for inclusion in a smart home appliance (see photos).
Large version of SENtrode all-in-one Internet of Things (IoT) subsystem enabling designers to quickly bring to market devices by concentrating on application software.
Besides that normal complement of inertial sensors for motion tracking, the kit also includes a heart rate monitor and an environmental sensor. The small version is 31.55-by-37.15-by-8.28 millimeters connected to a bracelet and the larger form-factor is 31.55mm-by-37.55mm-by-8.65 millimeters.
On the board is PNI's SENtral sensor hub plus its sensors including an accelerometer, gyroscope, magnetometer, and pressure sensor already connected to PNI's smart sensor hub, which contains all the sensor fusion algorithms you need. It is also sensor agnostic, in that it can use any MEMS manufacturer's devices while minimizing power consumption. Also on the board is integrated low-power Bluetooth and a heart rate monitor (on a daughter board) as well as humidity sensors and gas sensors (on optional daughter boards).
An ARM Cortex M4 low-power processor is also onboard for programming the application software, as well as a 70mAmp hour battery.
Exploded view of all the mother- and daughter-boards that make up the SENtrode wearable IoT development kit.
How to assemble the daughter boards onto the SENtrode motherboard.
Some of the built-in sensor fusion algorithms include motion compensated heart rate, 9-axis sensor fusion, 6-axis sensor fusion, altitude, e-compass, step counting, significant motion and tilt-to-wake, barometric pressure, and relative humidity. Additional algorithms for SENtrode will be posted to MEMS Industry Group’s (MIG's) Accelerated Innovation Community (AIC), an opensource algorithm community.
— R. Colin Johnson, Advanced Technology Editor, EE Times