Renesas RTD120D-EVK Manual de usuario

Quickstart Guide

R36UH0001EU0100 Rev.1.0 Page 1

The Thermopile CO2 Detector Evaluation Kit (EVK)

provides an easy way to evaluate the RTD120D dual-

channel thermopile in a CO2 gas detector application.

It operates stand-alone or with a PC running CO2

Detector Evaluation Software, making the CO2

concentration and intermediate data available for

plotting, logging, processing, exporting and analysis

using software available. The software and user

manual for the kit can be downloaded from:

www.renesas.com/rtd120d-evk.

Kit Contents

▪ CO2 Detector EVK Board

▪ Detachable LCD Module

▪ USB to Micro-USB Cable

▪ Shorting jumpers (2)

▪ Quickstart Guide (this document)

Introduction

The Thermopile CO2 Detector Evaluation Kit is

designed for evaluation of the Renesas’ RTD120D

dual thermopile in a CO2 gas sensing application,

such as to detect the ambient CO2 concentration. It

has a NDIR (Non-Dispersive Infrared) thermopile-

based gas sensing circuit and the concentration of

CO2 gas is measured based on the intensity of the

NDIR radiation.

It can be used as an application example to illustrate

how the thermopile, in combination with other

Renesas components, can be used to implement a

CO2 detection and concentration measurement

system.

Getting Started

Right out of the box, the EVK can begin measuring

CO2 levels right away:

1. Attach the LCD module to the main EVK board

2. Remove the two shorting jumpers from the MODE

and RESET headers on the main board. Save

these for use when flashing new versions of

firmware to the kit.

3. Connect the provided USB cable to the board and

to a power source, such as a phone charger or a

PC USB port.

Two splash screens will be displayed in sequence,

identifying the EVK, its software version and serial

number. Then after a 30 seconds warm-up period

(“CO2 WARM”), the CO2 concentration will be

displayed on the LCD, and updated every 5 seconds.

The LCD will also display Barometric Pressure (BP),

Relative Humidity (RH) and ambient temperature in

degrees C (dC).

Two pushbuttons are used for viewing additional

information and calibrating the board. Sw1 cycles

through displaying available modes and Sw2 selects

the currently displayed mode for further operations.

RTD120D-EVK

Thermopile CO2 Detector Evaluation Kit

R36UH0001EU0100 Rev.1.0 Page 2

Jul 28, 2021

RTD120D-EVK Quickstart Guide

The EVK can be also be used with a Graphical User Interface that runs on a connected PC.

The EVK comes pre-calibrated, but it can be re-calibrated by the user if desired. CO2 calibration can be performed

in either of two ways:

▪ In a stand-alone fashion, using the LCD and pushbutton user interface on the EVK itself, or

▪ With a graphical user interface (GUI), using a connected PC for a more interactive and visual experience.

See the RTD120D-EVK Thermopile CO2 Detector Evaluation Kit User Manual for further details.

Figure 1. EVK Components

R36UH0001EU0100 Rev.1.0 Page 3

Jul 28, 2021

RTD120D-EVK Quickstart Guide

Revision History

Revision Date Description

1.0 Jul 28, 2021 Initial release.

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for (1) selecting the appropriate products for your application, (2) designing, validating, and testing your application, and (3)

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('LVFODLPHURev.1.0 Mar 2020)

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