Aerosol Device Sensor Initialization and Communication Retry
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Solution Overview
Problem
Aerosol generating devices often malfunction due to abnormal communication between hardware components, such as temperature sensors and heaters, leading to inadequate heating and flavor delivery in heating-type cigarettes.
Innovation Solution
Incorporating a microcontroller unit that initializes sensor units and heating ICs, attempts communication, and reattempts communication when abnormal, using I2C communication methods and power supply management to ensure normal operation and prevent malfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication between hardware components is not initialized and checked, then the device operation is simple, but communication abnormalities occur causing malfunctions
Solution Approach 1:
The microcontroller unit performs preliminary initialization of the sensor unit before heating operations begin. This includes resetting the sensor unit and establishing I2C communication protocols in advance, ensuring that communication channels are ready and functional before critical heating processes start, thereby preventing communication abnormalities during operation
Solution Approach 2:
The system implements feedback mechanisms where the microcontroller unit continuously monitors communication status between hardware components. When communication abnormalities are detected, the system automatically retries initialization sequences and can alert users through display units, ensuring reliable operation through continuous verification and correction
2Measurement precision
If communication abnormalities are not detected, then the device operation is simple, but heating temperature control becomes inaccurate
Solution Approach 1:
The microcontroller unit performs preliminary checks of sensor unit communication and functionality before initiating heating operations. This ensures that temperature sensors are properly initialized and communicating correctly, guaranteeing accurate temperature measurements from the start of the heating process
Solution Approach 2:
The system continuously monitors temperature sensor readings and communication status during heating operations. When abnormalities are detected in temperature measurements or communication, the system adjusts heating parameters or alerts users, ensuring consistent temperature control accuracy throughout the heating process
Data Source
AI summary
An aerosol generating device includes a heater configured to heat a cigarette, a sensor unit configured to sense a parameter related to an operation of the heater, and a microcontroller unit configured to initialize the sensor unit when a heating event of the heater is initiated, attempt to communicate with the initialized sensor unit and determine whether communication with the sensor unit is normal, and when the communication with the sensor unit is determined to be abnormal, reattempt communication with the sensor unit.