Gas Sensor Temperature Pre-Stabilization for Accurate Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional gas sensors experience decreased measurement accuracy when the temperature of the sensor significantly differs from the environment, requiring time for temperature stabilization before reliable measurements can be made, leading to user wait times.
Innovation Solution
A gas sensor system with a control device that initiates cooling or heating based on temperature differentials between the sensor and its environment, using fans or heaters to stabilize the sensor temperature before measurement, thereby enabling high-accuracy measurement without user wait times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the gas sensor waits for temperature stabilization before measurement, then measurement accuracy is improved, but the time required to obtain reliable information increases
Solution Approach 1:
The control device performs cooling control of the gas sensor before measurement initiation by operating the fan to blow air over the sensor. This preliminary action stabilizes the sensor temperature in advance, allowing measurement to start immediately without waiting for natural temperature equilibrium, thus resolving the contradiction between accuracy and waiting time.
2Speed
If the gas sensor operates in a temperature environment different from the sensor's operating temperature, then the sensor can respond quickly, but measurement accuracy decreases
Solution Approach 1:
The system performs cooling control before measurement to pre-stabilize the gas sensor temperature to match the ambient environment. This allows the sensor to respond quickly to measurement commands while maintaining accuracy, as the temperature stabilization is completed in advance rather than during the measurement process.
Solution Approach 2:
The control device continuously monitors the gas sensor temperature and adjusts fan operation accordingly. When the temperature difference between the sensor and ambient environment falls below a threshold, the cooling control stops, ensuring the sensor is ready for accurate measurement without excessive waiting time.
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 system ensures high-accuracy gas concentration measurements are achieved promptly by stabilizing sensor temperature through controlled air flow or heating, reducing wait times and preventing condensation, thus enhancing measurement reliability.
Implementation Method 1
the control device performs cooling control of the gas sensor by blowing air over the gas sensor with the fan
Implementation Method 2
Infrared light in a long wavelength band typically having a wavelength of 2 μm or more is used in gas sensors and the like due to a thermal effect thereof and an effect of infrared light absorption by gases
Data Source
AI summary
Provided are a gas sensor system, a gas sensor control device, and a control method that enable high-accuracy measurement without causing a user to wait. The gas sensor system (1) includes: a reception section (30) that receives a startup signal from externally to the gas sensor system; a gas sensor (10) that performs concentration measurement of a measurement target gas in air; an air intake port (11) and an air discharge port (12) that are connected to the gas sensor; at least one fan (13); and a control device (20) that starts up the gas sensor through reception of the startup signal, that acquires temperature information for the gas sensor, and that, based on the temperature information for the gas sensor, performs cooling control of operating the fan so as to cool the gas sensor from startup of the gas sensor, before initiation of the concentration measurement.