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Smart Range Hood

Overview

As smart kitchens evolve, the demand is shifting from traditional contact-type buttons to sleek, touch-based interfaces that combine enhanced functionality with modern aesthetics. This system delivers a sophisticated and compact design powered by a 32-bit MCU, enabling non-contact user interaction and system-level integration for enhanced performance.

System Benefits​:

  • Compact PCB layout enhances system design flexibility.
  • Simplified development with a single MCU for multiple functions.
  • Supports temperature, humidity, and thermopile sensors to enable advanced environmental monitoring.
  • Proximity touch control for advanced human machine interface (HMI) function.
  • Capacitive Touch Sensor Unit 2 (CTSU2) in RA2E1 MCU improves touch accuracy and noise resistance.

Block Diagram

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Template 1Connector Arrow.50Connector ArrowConnector Arrow.9Connector 1.160Connector Arrow.115V5V5V<5mA<5mA<5mAConnector Arrow.14Connector Arrow.153.3V <0.6mA3.3V <0.6mA3.3V<0.6mA5V <4mA5V <4mA5V<4mAConnector Arrow.21 5V5V5V<70mA<70mA<70mAConnector Arrow.26Connector LinePlugSheet.30Sheet.31Sheet.32Sheet.33DiodeSheet.35Sheet.36Sheet.37Capacitor PolarizedSheet.39Sheet.40Sheet.41Sheet.42Connector Line.43Ground - EarthSheet.45Sheet.46Sheet.47Sheet.48JP121JP121JP1213.3V for Sensors3.3V for Sensor3.3V for Sensor5V5V5VAC 85~265V InputAC 85~265V InputAC 85~265V InputConnector 1.160.54Bi-directional.61Connector Arrow.62Touch KeySheet.64Sheet.65Sheet.66Sheet.67Sheet.68Sheet.69Sheet.70Sheet.71Sheet.72Proximity Button Capacitive Touch ElectrodeProximity Button Capacitive Touch ElectrodeProximity Button Capacitive Touch Electrode 5V5V5V<20mA<20mA<20mAConnector Line.76Connector Line.77Connector Line.79Speakerspeaker_8_Sheet.83Sheet.84Sheet.85Sheet.86BuzzerBuzzerBuzzerDiode - PhotodiodeSheet.98Sheet.99Sheet.100Sheet.101Sheet.102Darlington.651Sheet.104Darlington.254Resistor - FixedConnector Line.107Connector Line.1085V5V5V*For range ambient temperature*For range ambient temperature*For range ambient temperatureBuck RegulatorBuck RegulatorBuck RegulatorLDOLDOLDOLevel ShifterLevel ShifterLevel ShifterHumidity & Temp SensorAll-In-One Air Quality ModuleAll-In-One Air Quality ModuleThermopileThermopile*Thermopile*Fan Motor UnitFan Motor UnitFan Motor UnitSheet.112MCUMCUMCUGPIOGPIOGPIOGPIOGPIOGPIOPWMPWMPWMCTSUCTSUCTSUI2CI2CI2C

Buck Regulator

Non-Isolated AC/DC Buck Converters

LDO

Linear Regulators (LDO)

MCU

RA Arm Cortex-M MCUs
RX 32-Bit Performance/Efficiency MCUs

Level Shifter

2-Wire Bus Buffers

Software

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