AMS AS7030B Bedienungsanleitung

User Guide

UG000493

AS7030B

User Manual

Evalution Kit

v1-00 •2020-Jun-25

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AS7030B

Content Guide

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Content Guide

1Introduction....................................3

1.1 Kit Content.................................................... 3

1.2 Ordering Information .................................... 4

2Getting Started...............................5

3Hardware Description....................7

3.1 Hardware Architecture .................................7

3.2 Power Supply............................................... 8

4AS7030B Overview........................9

4.1 Optical Front End (OFE) .............................. 9

4.2 ECG Amplifier............................................. 12

4.3 Electrical Analog Front End (EAFE)........... 14

4.4 Light-to-Frequency Converter (LTF) .......... 15

4.5 ADC and FIFO ........................................... 15

4.6 Digital Interface.......................................... 17

4.7 Sampling Sequencer.................................. 17

5Software Description................... 23

5.1 Software Architecture................................. 23

5.2 Graphical User Interface............................ 27

5.3 FW, Driver, API.......................................... 55

6Revision Information................... 62

7Legal Information ........................ 63

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AS7030B

Introduction

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1 Introduction

The AS7030B Evaluation Kit allows evaluation of all functions on the AS7030B Biosensor and test

them in various applications.

The initial Evaluation Kit works with USB connection to the PC and comes with a GUI, which enables

the user to change AS7030B register settings, see measurement results and many more.

The SDK (Software Development Kit) currently contains algorithms for HRM, HRV and BP and is

supplied with the Evaluation Kit. The compiled firmware can be flashed onto the STM32 ARM Cortex-

M4 low power MCU.

1.1 Kit Content

Figure 1:

Evaluation Hardware Board

For full flexibility, the vital signs sensor (AS7030B), an accelerometer (LIS2DH12) and three

electrodes are located on the break out board, which can be used in any application and re-connected

to the main board via FPC cable once broken off. There is also the option to attach external

electrodes. If you are using an optional Wristband evaluation kit, AS7038 wristband needs to be

connected to the Wristband PicoBlade connector K500 on Mainboard and sensor part of the kit need

to be separated from Mainboard.

Any signals important for development are accessible for probing at pin headers.

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Introduction

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1.2 Ordering Information

Ordering Code

Description

AS7030B-EVALKIT

Evaluation Kit for AS7030B

AS7030B-WRISTBAND

Wristband to connect to AS7030B Evalkit

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AS7030B

Getting Started

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2 Getting Started

The client software latest version is available for download at https://ams.com/as7030B#tab/tools or

the software is possible to find on the USB stick as a part of the evaluation kit. To install, start the

installer executable and follow the instructions as shown in Figure 2 (left to right top to bottom).

Figure 2:

AS7030B Vital Signs Sensor Installation

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For Windows OS versions prior to Windows®10, the STSW-STM32102 virtual COM port driver needs

to be installed as well. The driver can be found in the <drivers\STM32_vcp_driver> folder contained

within the client software installation path. To install it, go to your OS version directory (Win7 or Win8,

OS versions prior to Windows®7 are compatible with the Windows®7), then:

1. Double click on dpinst_x86.exe if you are running a 32-bits OS version

2. Double click on dpinst_amd64.exe if you are running a 64-bits OS version

3. Follow the instructions

For updating the FW on the evaluation board over USB, the DfuSe driver from STMicroelectronics has

to be installed. This is available in the <drivers\DFU> folder contained within the client software

installation path. To install it, go to your OS version directory (Win7, Win8 or Win8.1), then:

1. Go to [x86] directory or [x64] directory based on your OS version:

2. Double click on dpinst_x86.exe if you are running a 32-bits OS version

3. Double click on dpinst_amd64.exe if you are running a 64-bits OS version

4. Follow the instructions

Information

In some cases, it can be necessary that the driver needs to be installed even on a Windows 10

system. In this case chose the driver installer from the Win 8.1 folder and install.

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Hardware Description

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3 Hardware Description

3.1 Hardware Architecture

Figure 3:

Evaluation Hardware Board –Top View

SWD

Interface IEC 60601

Compilant DC-DC

converter AS7030

ECG INN Electrode

ECG REF Electrode

ECG INP Electrode

Break Out Line

Test Point for External ECG REF Electrode

Test Point for External ECG INN Electrode

Test Point for External ECG INP Electrode

STM32L476RET6

MCU Isolators for all

Signals

Pin Header

DFU Button

Micro USB

Pin Header

Current

Consumption

ADC ADS114

Connector for

Sensor Board

Molex PN:

53261_1071, 10

Contacts

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Hardware Description

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Figure 4:

Evaluation Hardware Board –Bottom View

3.2 Power Supply

The AS7030B Eval Kit is supplied by the USB connection. In order to avoid a direct connection from

the electrodes to the power grid, an IEC 60601-1 compliant RECOM DCDC converter (R0.25S-0505/H

or R0.25S-0505/HP) is assembled on the board as well as isolator ICs for all signals passing to the

sensor board. This means that there is no galvanic connection between the sensor board and the

power grid.

Accelerometer

LIS2DH12

Connector for

External

Electrodes

Connector for

Break out Board

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AS7030B Overview

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4 AS7030B Overview

The AS7030B is a photocurrent and voltage sensor capable of taking PPG, ECG, proximity and skin

temperature/resistivity measurements. It integrates an optical front end, ECG amplifier, electrical

analog front end and light to frequency (LTF) converter. It features a built-in sampling sequencer, 128-

byte FIFO, a 14-bit SAR ADC, four GPIO pins and an I2C interface.

4.1 Optical Front End (OFE)

The figure below shows the block diagram of the optical front end.

Figure 5:

Optical Front End

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AS7030B Overview

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The optical front end consists of:

●4 LED drivers, individually configurable, operated manually or controlled by the built-in sampling

sequencer

●2 built-in green LEDs (VD1 and VD2)

●1 built-in IR LED (VD4)

●1 free for connecting an external LED to VD3

●6 photodiodes

●4 with green filters (PD1, PD2, PD3 and PD4)

●1 with IR filter (B) (PD5)

●1 Clear (A) (PD6)

Figure 6:

Photodiode Arrangement

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