Humidification Compensation via Wireless Temperature Sensing
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Solution Overview
Problem
Existing household ventilators face inconsistencies in humidification due to deviations in estimated water temperature caused by inconsistent thermal conductivity between heating devices and humidification tanks, leading to errors in humidification effect and target value.
Innovation Solution
A humidification value compensation device and method that utilizes a sensor module comprising a flow sensor, temperature and humidity sensor, and gravity sensor to calculate actual and target humidification values, and adjust heating device temperature based on environmental parameters and weight changes to compensate for errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If heating device temperature is adjusted based on environmental parameters, then humidification control is improved, but thermal conductivity inconsistency between heating device and humidification tank causes temperature estimation deviation
Solution Approach 1:
The patent replaces the mechanical thermal conduction-based temperature estimation system with an electromagnetic field-based wireless temperature measurement system. The temperature measurement module uses electromagnetic fields to non-contactly measure the actual water temperature in the humidification tank, eliminating the need for direct thermal contact between the heating device and humidification tank. This substitution resolves the thermal conductivity inconsistency problem by decoupling the temperature measurement from mechanical contact while maintaining accurate temperature control through wireless communication between modules.
2Use of energy by moving object
If mechanical connection between heating device and humidification tank is used, then thermal transfer is achieved, but contact thermal conductivity consistency cannot be guaranteed
Solution Approach 1:
The patent extracts the temperature measurement function from the mechanical thermal contact system. By introducing a separate wireless temperature measurement module that operates independently from the mechanical connection between heating device and humidification tank, the system eliminates the dependency on consistent thermal conductivity while maintaining effective thermal transfer through the original mechanical connection for heating purposes.
Solution Approach 2:
The wireless temperature measurement module acts as an intermediary between the heating device and the control system. Instead of relying on direct thermal contact to infer temperature, the intermediary module wirelessly transmits actual water temperature data to the control module, which then adjusts heating power accordingly. This intermediary approach decouples temperature measurement from mechanical thermal contact.
3Ease of operation
If fixed temperature heating is used, then control simplicity is maintained, but humidification accuracy deviates from target value
Solution Approach 1:
The patent implements a closed-loop feedback control system where the wireless temperature measurement module continuously monitors actual water temperature and transmits data to the control module. The control module compares the actual temperature with the target temperature and dynamically adjusts the heating device power accordingly. This feedback mechanism maintains control simplicity through automated regulation while achieving high humidification accuracy by continuously adapting to actual temperature conditions.
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
Accurately calculates humidification values and compensates for errors, ensuring consistent humidification results by directly measuring weight changes and adjusting heating device temperature, thereby improving thermal conductivity consistency.
Implementation Method 1
a gravity sensor, configured to detect a weight change value of the humidification tank during a predetermined humidification cycle
Implementation Method 2
a flow sensor, configured to detect a gas flow rate of the heating pipeline
Implementation Method 3
a temperature and humidity sensor, configured to detect environmental parameters of the respiratory device, including environmental temperature and humidity
Implementation Method 4
heating devices to heat to a fixed temperature or dynamically adjust the temperature of the heating device... to obtain the corresponding water temperature and complete humidification control
Data Source
AI summary
A humidification value compensation device provided includes a sensor module and a main control module. The sensor module is configured to sense gas flow rate, environmental parameters, and the weight change value of the humidification tank during a predetermined humidification cycle. The environmental parameters include environmental temperature and humidity; The main control module is communicated with the sensor module, including a first calculation module, a second calculation module, an error calculation module, and a compensation value calculation module, which are configured to calculate an actual humidification value based on the gas volume, the weight change value, and the environmental parameters during the predetermined humidification cycle, calculate a target humidification value based on the environmental temperature and corresponding predetermined relative humidity, calculate a humidification error based on the actual humidification value and target humidification value, and calculate the humidification compensation value based on the humidification error and target humidification value.