Toshiba starter kit helps medical wearable development
March 13, 2017
Toshiba Electronics has announced a development kit that provides the hardware and software needed to create medical wearable devices that handle multiple sensor inputs.
The EBTZ1041-SK-A1 starter kit supports the prototyping of highly integrated IoT wearable applications featuring the Japanese company’s TZ1000 App Lite family of IoT processors.
The kit incorporates the company’s TZ1041MBG sensor hub application processor. This processor is based on a 32bit ARM Cortex-M4F processor and acts as a hub to collect, process and store data from multiple sources. It then transfers the raw or processed data to external devices such as smartphones and tablets using an integrated Bluetooth wireless function.
The evaluation board combines the processor with an Arduino Uno R3-compatible header that allows developers to connect to commercially available Arduino shields. In addition to the integrated Bluetooth, a dedicated header to connect to Toshiba’s TC32306 single-chip RF transceiver supports sub-GHz wireless communications. An on-board CMSIS-DAP debug interface is provided as standard. Alternative debuggers can be connected via the board’s nine-pin SWD connector.
The TZ1041MBG allows peripheral devices and sensors – for example MEMS sensors such as atmospheric pressure sensors and moisture sensors – to be connected via various integrated USB, uart, SPI, I2C and 12bit ADC interfaces. Other external sensors can be directly connected to the three input channels of the device’s integrated 24bit high-resolution ADC; this allows for accurate measurement of biomedical signals including pulse rates and electrocardiograms.
These data are collected and processed by the Cortex-M4F with DSP instructions and a floating point processing unit. The processor also incorporates 288kbyte SRAM operating memory and 1Mbyte NOR flash memory for storing programme code and data.
The integrated Bluetooth LE controller and RF circuit – compliant with Bluetooth 4.1 Low Energy– transfer raw and processed data to external equipment.
Other members of the family are the TZ1011MBG, TZ1031MBG and TZ1021MBG. The first two integrate accelerometer and gyroscope, the TZ1011 also contains a magnetometer sensors. The latter does not feature integrated sensors and BLE functionality.
As well as the starter kit hardware, wearables developers have access to software algorithms for the TZ1000 series. These include activity monitoring, PPG (photo-plethysmography) monitoring and ECG (electrocardiography) monitoring.