Vishay Intertechnology can help manufacturers add a heart rate monitoring capability to any type of consumer electronic device. The company will demonstrate the capability at electronica 2018 with a fitness watch prototype that uses the company’s optoelectronic components to allow the heart rate monitor function in conjunction with a software algorithm developed by Elfi-Tech Ltd, a developer of unique noninvasive medical devices.
With this capability, the company is providing an opportunity for companies that do not have proprietary software and hardware solutions for heart rate monitoring to combine the capability to their products with a comparatively low cost of entry. Together the two companies can provide a total reference design for the heart rate monitoring capability, including digital and analog front-end components.
Allowing Vishay optoelectronic components in the fitness watch include the VEMD5080X01 PIN photodiode and VLMTG1400 LED. The VEMD5080X01 is a unique surface-mount device that eliminates optical cross talk. It is sensitive to visible and infrared light from 350nm to 1100nm and comes in a tiny package measuring 7.5mm x 7.5mm x 0.9mm. The LED has a peak wavelength in the green spectrum at 525nm and features typical intensity of 1400millicandela. It is packaged in a 0603 surface-mount format with a height of 0.55mm.
Elfi-Tech provided the software and the nonoptical hardware of the fitness watch, including an Arm Cortex-M3 microcontroller, a Texas Instruments analog front-end for heart rate monitoring, BLE connectivity, and a MEMS-based accelerometer. The output is transmitted to an Android application.