Features of the optical pulse wave sensor "BH1792GLC"

BH1792GLC is an optical pulse wave sensor provided by ROHM. Compared to the conventional product (BH1790GLC), it can measure pulse waves up to 32 times faster, making it possible to measure stress and blood vessel age that require high-speed sampling.

Power consumption is the lowest in the industry at 0.44mA (when measuring pulse rate). Contributes to long battery-powered applications.

The BH1792GLC has the following three major features, which are explained below.

1. Supports vital sign measurement such as stress measurement and vascular age measurement
2. It can be used even in intense movements such as sports and in environments where infrared rays such as sunlight are strong.
3. Low power consumption in the industry's lowest class, contributing to long-time operation

2. Can be used in environments with intense movement such as sports, and in environments where infrared rays such as sunlight are strong.

Equipped with ROHM's original optical filter, the influence of disturbance noise such as infrared light and red light is reduced to 1/10 or less. This enables high-precision pulse wave measurement even in environments with strong infrared rays such as sunlight and intense movement such as sports.

3. Industry's lowest power consumption contributes to long-time operation

The low power consumption of the pulse wave sensor and microcomputer enables the application to run for a long time. The low power consumption is 0.44mA (when measuring the pulse rate), which is the lowest class in the industry.

Evaluation kit for developing BH1792GLC

An evaluation board "BH1792GLC-EVK-001" is available for easy evaluation of the BH1792GLC.

Evaluation can be easily started by connecting to the general-purpose microcomputer board "Arduino Uno".

This board is ready for evaluation by following the steps below.

First, prepare the following:

• 1 Arduino Uno
• 1 PC with Arduino IDE installed
• USB cable
• 1 SHIELD-EVK-001 (SensorShield board)
• One BH1792GLC-EVK-001 (evaluation board)

*SensorShield board is included as part of the SensorShield-EVK-003 kit.

1. Device connection settings

Connect and set up the Arduino Uno, SensorShield board, evaluation board kit, and PC.

3. Start measurement by placing your finger on the board

Place your finger as shown below and start measuring your pulse.

4. Check the pulse wave measurement results

You can check your pulse wave on your PC.

Application example

• Wearable devices such as smart bands and smart watches
• smartphone
• wireless earphones
• Other devices that require vital data

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