Humidity Sensor Accuracy via Weather Forecast Correlation
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Solution Overview
Problem
Conventional temperature and humidity sensors face challenges in accurately determining humidity values due to dust contamination, especially in harsh environments, leading to inaccuracies in sensed data.
Innovation Solution
An electronic device with a temperature and humidity sensor, a magnifying unit, A/D converting unit, processing unit, storage unit, timing unit, and heating unit, which uses a dustproof cover and compares sensed data with weather forecast temperature values to enhance humidity value accuracy by ensuring accurate temperature readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional temperature and humidity sensors are used in harsh environments, then the device can operate in various conditions, but the humidity value accuracy deteriorates due to dust contamination
Solution Approach 1:
The patent introduces a dustproof cover as an intermediary component between the harsh environment and the temperature-humidity sensor. This cover allows air (containing humidity information) to pass through while blocking dust particles, thus protecting the sensor from contamination while still enabling it to detect humidity values accurately in various environmental conditions
Solution Approach 2:
The patent segments the sensing function by separating the dustproof cover (protection function) from the temperature-humidity sensor (detection function). This segmentation allows the sensor to remain protected while the cover handles the environmental interaction, maintaining both adaptability and measurement precision
2Measurement precision
If dustproof cover is added to protect sensor, then humidity value accuracy improves, but device complexity increases
Solution Approach 1:
The patent employs a dustproof cover that functions as a protective shell, allowing the sensor to be enclosed and protected without requiring complex sealing mechanisms or multiple components. The cover provides sufficient protection against dust while maintaining a simple overall structure
3Measurement precision
If temperature reading accuracy is improved by comparing with weather forecast, then humidity value determination accuracy improves, but loss of time increases due to additional processing steps
Solution Approach 1:
The patent utilizes weather forecast temperature data as a pre-obtained reference value, eliminating the need for complex real-time temperature verification processes. By comparing sensor readings against this preliminary data, the system achieves accurate humidity determination without extensive processing time
Solution Approach 2:
The patent implements a feedback mechanism where temperature readings from the sensor are continuously compared with weather forecast data, and humidity values are adjusted based on this comparison. This feedback loop ensures accuracy while maintaining efficient processing by using readily available reference information
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution improves the accuracy of humidity value determination by correlating sensed temperature values with weather forecast data, reducing the impact of dust contamination and ensuring the reliability of humidity readings.
Implementation Method 1
a heating unit (70)... When it is detected that the temperature value sensed by the temperature and humidity sensor (10) is inconsistent with a temperature value provided by weather forecast, the heating unit (70) is controlled to work
Data Source
AI summary
An electronic device includes a temperature and humidity sensor, a timing unit, and a storage unit storing a number of temperature values provided by weather forecast. Each of the temperature values provided by the weather forecast is associated with one time point. The electronic device obtains the temperature value and the humidity value sensed by the temperature and humidity sensor, obtains current time from the timing unit, associates the obtained temperature value and the humidity value with the current time, and stores the associated temperature value, humidity value, and the current time. The electronic device further compares each obtained temperature value with each temperature value provided by the weather forecast to find at which time point there is a match, searches in the storage unit to determine that each determined humidity value associated with one found time point is a humidity value with accuracy.