The customer in the Motosport racing industry wanted the fast delivery of a multi-sensors biometric controller. There were various requirements:

• ECG (Electrocardiogram) chest measurement with HRV (Heart Rate variability)
• High Impact shock detection
• Real-time updates with long-range Bluetooth wireless technology
• Encryption of biometric data
• Data transfer to car CANBus
• Data storage in internal memory
• Low-Power consumption using LiPo Battery
• Over-The-Air Firmware upgrade
• Small Footprint

Kelsec successfully designed the electronic, the PCB and the embedded firmware with the following techniques and technologies:

• To speed up development and obtain long-range Bluetooth wireless, Cypress Cyble 224116 was selected. Module with ARM microcontroller and PA/LNA (Power Amplifier, Low Noise Amplifier).

• Heart rate monitoring (ECG) was accomplished using the Maxim 30003 chipset. The Maxim 30003 provides clinical-grade ECG AFE, and the SPI interface handled the communication with the ARM microcontroller.
• CANBus communication implemented using Texas Instruments MCP2515 chipset. Real-time data transfer to the vehicle Canbus for further analysis.

• High impact detection handled by STMicroelectronics H3LIS331DL High-g triaxial accelerometer

All firmware in C :

• Data gathering (Ear Temp, Shock detection, ECG, movement,SpO2)
• OTA Firmware upgrade
• Configuration using BLE characteristic
• Data transmission using CANBUS and BLE
• Data Encryption
• Data recording in FRAM Memory