Renesas OB1203SD-BT2-EVK Manual
  1. Manuals
  2. Brands
  3. Renesas Manuals
  4. Motherboard
  5. OB1203SD-BT2-EVK
  6. Manual

Renesas OB1203SD-BT2-EVK Manual

Evaluation kit for heart rate, spo2, and respiration rate
Hide thumbs Also See for OB1203SD-BT2-EVK:
Table of Contents

Advertisement

Quick Links

Download this manual
OB1203SD-BT2-EVK
Evaluation Kit for Heart Rate, SpO2, and Respiration Rate
The OB1203SD-BT2-EVK evaluation kit for Heart
Rate, SpO2, and Respiration Rate uses Renesas'
highly integrated OB1203 biosensor for reflective
photoplethysmography.
With the provided algorithm, the kit can determine
Heart Rate, Oxygen Saturation (SpO2), and
Respiration Rate. Data can be monitored locally by
connecting a USB cable between the EVK and a
computer and using a terminal program. Data is also
sent by a wireless Bluetooth (BLE) link and available
for monitoring using the Renesas OB1203 Web App
running on a Windows™ v10 or later PC.
The design incorporates a Dialog DA14531MOD
SmartBond TINY™ Module for MCU+BLE capability
and a Renesas ISL9111 DC-DC boost converter.
Functions
■
Collects data from Renesas OB1203 sensor
module through I2C communication
■
Calculates the oxygen saturation, pulse, and
respiration rate using the provided algorithm
■
Reports oxygen saturation, pulse, and respiration
rate raw data and tabular summary values plus
battery level
■
Boosts battery voltage to system's voltage needs
Target Devices
■
MCU+BLE: Dialog DA14531MOD module
■
Sensor: OB1203 module
■
Boost: ISL9111 (ISL9111EH33Z)
When applying the provided algorithm to another
microcontroller, modify the program to the
specifications for the target microcontroller and
conduct an extensive evaluation of the modified
program. Changes in analog or power supply
components also must be fully evaluated.
R36UH0005EU0100 Rev.1.00
Nov 19, 2021
Evaluation Kit Manual
Specifications
The OB1203SD-BT2-EVK monitors heart rate, blood
oxygen saturation, and respiration rate. Battery-
operated and portable, the evaluation kit is suitable
for monitoring at home, during exercise, or travel.
■
Operating voltage: 3.0V (AAA battery × 2)
■
Measurement range: Oxygen saturation: 70% to
100%
■
Pulse rate: 25 to 200 bpm
■
Operating temperature: -40 to 85°C
■
Operating humidity: 5 to 99% RH (No condensate
water)
Page 1
© 2021 Renesas Electronics

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the OB1203SD-BT2-EVK and is the answer not in the manual?

Questions and answers

Related Manuals for Renesas OB1203SD-BT2-EVK

Summary of Contents for Renesas OB1203SD-BT2-EVK

  • Page 1 Data is also ■ Pulse rate: 25 to 200 bpm sent by a wireless Bluetooth (BLE) link and available for monitoring using the Renesas OB1203 Web App ■ Operating temperature: -40 to 85°C running on a Windows™ v10 or later PC.

  • Page 2: Table Of Contents

    Figure 4. ISL9111 Typical Application Circuit ......................7 Figure 5. OB123SD-BT2-EVK Measurement ......................8 Figure 6. OB1203SD-BT2-EVK Board Layout ......................9 Figure 7. OB1203SD-BT2-EVK Schematic – Page 1 ..................... 10 Figure 8. OB1203SD-BT2-EVK Schematic – Page 2 ..................... 11 Figure 9. OB1203SD-BT2-EVK PCB Fabrication Drawing ..................13 Figure 10.

  • Page 3: Functional Description

    OB1203SD-BT2-EVK Evaluation Kit Manual 1. Functional Description DA14531MOD SmartBond TINY™ MCU+BLE Module The SmartBond TINY™ Module is based on the Dialog Semiconductor DA14531 SoC configured in buck mode. With an integrated 1Mbit flash, 32MHz XTAL and a printed antenna, the module enables a faster time to market at reduced development costs.

  • Page 4: Figure 2. Da14531Mod (16) Pin Configuration

    OB1203SD-BT2-EVK Evaluation Kit Manual Figure 2 shows the pin configuration of the DA14531MOD (32-pin products). Figure 2. DA14531MOD (16) Pin Configuration R36UH0005EU0100 Rev.1.00 Page 4 Nov 19, 2021...

  • Page 5: Da14531Mod Key Features

    OB1203SD-BT2-EVK Evaluation Kit Manual 1.1.1. DA14531MOD Key Features ■ ■ Bluetooth Power Management ● ● ® Compatible with Bluetooth v5.1, ETSI EN 300 328 Operating range (1.8 V - 3.3 V) and EN 300 440 Class 2 (Europe), FCC CFR47 ●...

  • Page 6: Ob1203 Photoplethysmography Sensor

    OB1203SD-BT2-EVK Evaluation Kit Manual OB1203 Photoplethysmography Sensor The OB1203 Sensor Module has a fully integrated sensor for reflective photoplethysmography (PPG), a proximity sensor (PS), and a multi-channel light sensor (LS/CS, not used in this application). The OB1203 integrates light sources, drivers, sensors, ADC, and I2C interface in a single optically optimized package.

  • Page 7: Isl9111 Dc-Dc Boost

    OB1203SD-BT2-EVK Evaluation Kit Manual ISL9111 DC-DC Boost The ISL9111 is a high-efficiency synchronous boost converter with a 1A switch. The device provides a power supply solution for series connected (1.5 + 1.5V = 3V) alkaline battery- powered applications. It guarantees to supply 100mA when the output is 3.3V.

  • Page 8: Setup And Configuration

    Setup and Configuration For more information on setup and configuration, see the Renesas OB1203SD-BT2-EVK Getting Started Guide. Instructions for updating Renesas supplied code using a computer and the BLE connection are discussed in “Custom Programming.” The following figure shows the EVK with plastic finger cradle installed. The cradle optimizes the position of the finger over the OB1203 sensor.

  • Page 9: Board Design

    Data is also processed through the DA14531MOD BLE subsystem which advertises as “DLG-OB1203”. The ISL9111 adjusts the voltage of two AAA batteries to the systems supply needs of 3.3V. The SW1 button powers on the system. Layout Figure 6. OB1203SD-BT2-EVK Board Layout R36UH0005EU0100 Rev.1.00 Page 9 Nov 19, 2021...

  • Page 10: Schematic

    OB1203SD-BT2-EVK Evaluation Kit Manual Schematic Figure 7. OB1203SD-BT2-EVK Schematic – Page 1 U4 is a UART to USB converter IC. A single-wire UART is used for connection between the MCU and the FT234 IC. A 1K pull-up resistor between TXD and RXD is required for the single wire UART.

  • Page 11: Figure 8. Ob1203Sd-Bt2-Evk Schematic

    The OPTICAL_INT net goes high when the OB1203 detects a finger near the sensor. This wakeup prompts the MCU to begin processing data. The highly integrated U3 DA14531MOD includes the MCU which uses the Renesas supplied open-source algorithm for OB1203 measurement processing. The module also includes a globally certified BLE transceiver with on-board antenna.

  • Page 12: Bill Of Materials

    OB1203SD-BT2-EVK Evaluation Kit Manual Bill of Materials Item Part Reference Description Manufacturer Manufacturer P/N C1 C4 Capacitor 4.7uF 20% 6.3V X5R 0402 Murata GRM155R60J475ME87J C2 C3 Capacitor 0.1 uF 50V 10% X5R 0402 Murata GRM155R61H104KE19D Capacitor 4.7uF 20% 10V X5R 0603...

  • Page 13: Pcb Fabrication

    OB1203SD-BT2-EVK Evaluation Kit Manual PCB Fabrication Figure 9. OB1203SD-BT2-EVK PCB Fabrication Drawing R36UH0005EU0100 Rev.1.00 Page 13 Nov 19, 2021...

  • Page 14: Custom Programming

    3. Custom Programming This section applies to users developing custom code only. The Renesas/Dialog Keil/Smart Snippets integrated development environment (IDE) is used for custom code development. Initial firmware that sets up the multi-image and Software Update Over the Air (SUOTA) capability is loaded into the target EVK SPI FLASH using Smart Snippets Tool Box.

  • Page 15: Figure 11. Smart Snippets Toolbox For Loading Initial Multi-Image Code To The Hw Dut

    OB1203SD-BT2-EVK Evaluation Kit Manual Figure 11. Smart Snippets Toolbox for Loading Initial Multi-image Code to the HW DUT Select JTAG and set ports: SPI-CLK = P0.4 SPI-CS = P0.1 SPI-MISO = P0.3 SPI-MOSI = P0.0 Figure 12. Smart Snippets Toolbox for Loading Initial Multi-image Code to the DUT Bootable should be un-checked R36UH0005EU0100 Rev.1.00...

  • Page 16: Figure 13. Smart Snippets Toolbox For Loading Initial Multi-Image Code To The Dut

    OB1203SD-BT2-EVK Evaluation Kit Manual Figure 13. Smart Snippets Toolbox for Loading Initial Multi-image Code to the DUT Set SPI FLASH memory size = 20000 R36UH0005EU0100 Rev.1.00 Page 16 Nov 19, 2021...

  • Page 17: Renesas Algorithm

    OB1203SD-BT2-EVK Evaluation Kit Manual 4. Renesas Algorithm Main Process Figure 14 and Figure 15 show the flowchart for the ‘main()’ routine and the user initialization routine ‘R_MAIN_UserInit()’. Figure 14. Main Processing Routine Figure 15. User Initialization Routine R36UH0005EU0100 Rev.1.00 Page 17...

  • Page 18: Ob1203 Module Routines

    OB1203SD-BT2-EVK Evaluation Kit Manual OB1203 Module Routines The following figure shows the flowchart of the oximeter measure routine. Figure 16. PPG Measurement Routine R36UH0005EU0100 Rev.1.00 Page 18 Nov 19, 2021...

  • Page 19: Ordering Information

    The OB1203SD-BT2-EVK is provided for reference, demonstration, and/or evaluation. No performance is guaranteed or warranted, nor is fitness or suitability for any medical device application claimed. Renesas will not indemnify customers using any part of the provided reference code. OEM is responsible for performance of products made using any of the provided reference code.
  • Page 20 Renesas' products are provided only subject to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources expands or otherwise alters any applicable warranties or warranty disclaimers for these products.

Table of Contents