Richtek RT1025 Manuel utilisateur
RT1025 Cardio EVK
User Manual
APP_RT1025WS_P0-00 November 2018 1 http://www.richtek.com
your power partner.
Cardio EVK User Manual for RT1025 Cardioid Evaluation Board
Purpose
The RT1025 is an integrated AFE solution for Heart-Rate monitoring and Biopotential measurements. The RT1025
integrates low noise voltage and current sensing channels and is capable of sensing ECG (Electrocardiography) and
PPG (Photoplethysmography) simultaneously. Richtek Technology developed an Android APP with the evaluation
board to evaluate RT1025 performance. This document describes the operation manual of Cardio EVK for RT1025
evaluation board.
Table of Contents
Purpose................................................................................................................................................................. 1
Introduction............................................................................................................................................................ 2
Usage with The Cardioid Evaluation Board ............................................................................................................ 3
More Information.................................................................................................................................................. 15
Important Notice for Richtek Evaluation Board ..................................................................................................... 15
RT1025 Cardio EVK
User Manual
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your power partner.
Introduction
General Product Information
The RT1025 isan integrated AFE solutionfor Heart-Rate monitoring and measurements. The RT1025 integrates low
noise voltage and current sensing channels and is capable of sensing ECG (Electrocardiography) and PPG
(Photoplethysmography) simultaneously. The RT1025 has > 100dB dynamic range andcan sense pulses accurately
by detecting the heart’s electric signals. The sampling rates of the high-precision voltage and current sensing
channels in the RT1025 are configurable between 64 to 4kHz. The RT1025 solution need only few discrete
components and is easy to use for low-power medical ECG/PPG, sports, and fitness applications. With high levels
of integration and high-precision voltage and current sensing channels, the RT1025 solution is suitable for scalable
medical instrumentation systems. The RT1025 is available in a 3.1mm x 3.4mm, 41-Ball, 0.4mm pitch, WL-CSP
package.
The Cardio EVK is an Android APP to evaluate RT1025 performance with the Cardioid evaluation board. The
evaluation board includes the RT1025 together with the BLE SiP and PPG modules to quickly evaluate the operation
and performance of the RT1025. The evaluation board number is PCB106_V1. For more information, please find the
related datasheet or application notes from Richtek website.
Cardio EVK Product Feature
Support Android 6.0 above phone or tablet
“Cardio EVK” can download from Google Store
Support BLE connection
Operated with Richtek Cardioid Evaluation Board
Evaluation Board Number : PCB106_V1
Dimension : 9cm x 5cm
RT1025 Cardio EVK
User Manual
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your power partner.
Usage with The Cardioid Evaluation Board
Measurement Procedure
The RT1025 supports the reading of samples and device status upon interrupt or via polling. It contains 4kB SRAM
for data buffering. The deviceis internally clocked to offer high-precision clock with external crystal. The flexible timing
control enable the users to control the PPG device timing for different application and to power down the device for
power saving. In order to achieve the high speed data acquisition, the RT1025 device was configured as a slave of
SPI mode. The Cardioid evaluation board is fully assembled and tested. The usage of the evaluation board was
shown in below figure.
1. Insert LIR2430 Battery in the battery case. The battery can be charged by applying 5V via the Micro USB port.
Once on, you should see a Red LED lighting for OK status.
If no light is present, check connections or try replacing the Battery with a fresh one.
If Red LED is flashing, check the I2C or SPI device correct connections.
2. Make sure the evaluation board connect to theAndroidAPP for ECG/PPG measurement.
Make sure Bluetooth is enabled on the phone/tablet. (Not need to pairing)
Launch the “Cardio EVK” application on your phone/tablet.
RT1025 Cardio EVK
User Manual
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your power partner.
Then, you will need to connect to the Cardioid evaluation board Hardware. Do this by selecting the “BLE
ICON” that shows up upon opening the android application. Select the evaluation board ID
(RTK_CARDIO_00XXXX) from pup-out menu for BLE paring.
After the Cardioid evaluation board BLE connection is successfully established, the “BLE ICON” will become
blue and the main GUI will launch.
Refer to detail “Description of ” from APP section for more information.
3. Put your fingers cover the VRLD and PPG sensor in the top, FR/FL in the bottom.
RT1025 Cardio EVK
User Manual
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your power partner.
Select “PPG+ECG“ tab firstly, then press “Measure” to start PPG+ECG data acquisitions. Note that it may take a
while to get stable results. Press “Stop”, once you finish the measurement.
4. Check the measurement results. Press “SAVE” to store the measured data for analysis.
RT1025 Cardio EVK
User Manual
APP_RT1025WS_P0-00 November 2018 6 http://www.richtek.com
your power partner.
Description of Cardio EVK
The “Cardio EVK” app provide the functions of ECG/PPG/G-sensor measurement and Cardioid Evaluation Board
configuration. (“Cardio EVK” can download from Google Store)
PPG/ECG/G-sensor Measuring
PPG : To acquire the PPG data, click “PPG” tab in the Cardio EVK first. Then press “Measure” to start the
measurement. Press “Stop”, once you finish the measurement.
ECG : To acquire the ECG data, click “ECG” tab in the Cardio EVK first. Then press “Measure” to start the
measurement. Press “Stop”, once you finish the measurement.
RT1025 Cardio EVK
User Manual
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your power partner.
PPG & ECG : To acquire the PPG and ECG data at the same time, click “PPG & ECG” tab in the Cardio EVK first.
Then press “Measure” to start the measurement. Press “Stop”, once you finish the measurement.
G sensor : To acquire the G-sensor value, click “G sensor” tab in the Cardio EVK first. Then press “Measure” to start
the measurement. Shaking the EVB in different directions will produce below results. Press “Stop”, once
you finish the measurement.
Info. : To obtain the FW version, battery and temperature value of the Cardioid Pad device, click “Info.” tab in the
Cardio EVK first. Then the information of the Cardioid Pad device will be shown as below.
RT1025 Cardio EVK
User Manual
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your power partner.
Data Logging / Measuring
SAVE : To save logging data after stop acquire the data, click “SAVE” in the left-hand of the Cardio EVK screen
that displays the waveforms. This will log and timestamp LED source, raw measuring data, and other
device information into a csv file located in the phone’s main directory, entitled
“rtk_cardio_ppg_DATE_TIME.csv”, “rtk_cardio_ecg_DATE_TIME.csv”,
“rtk_cardio_ecgppg_DATE_TIME.csv” or “rtk_cardio_gs_DATE_TIME.csv”.
Measure : The “Measure” button is used to measure the PPG/ECG/PPG&ECG/G-sensor signal from Cardioid Pad
device. During the data acquiring, the button will be changed to “Stop”
Stop : To stop acquire the data, click “STOP” in the left-hand of the Cardio EVK screen that is acquiring the data.
RT1025 Cardio EVK
User Manual
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your power partner.
Configuration
To configure the Cardioid Pad, click “More Icon” in the upper right-hand of the Cardio EVK screen.
Firmware Upgrade : This function will update the firmware of the Cardioid Pad via the phone. Please find the latest
firmware information from Richtek website. Please do not close the APP and Cardioid Pad
during the update to avoid the update failure.
The battery voltage needs to be greater than 3.8V when FW upgrade.
RT1025 Cardio EVK
User Manual
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your power partner.
Download the firmware file to phone, pressing the "Firmware Upgrade" after connecting the Cardioid Pad, the pop-
up menu will appear. Select the firmware file and pressing "OTA" button, Cardioid PAD will start upgrade Firmware.
Y-Axis Unit : This function can use to switch the ADC raw code and Voltage or G values in the waveform display.
LED Source : Cardioid PAD provide the Green and the Red/IR LED sources for PPG measurement. This function
can switch the LED source for PPG measurement.
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