Ultraviolet Gas Sensor Pressure Compensation Chamber
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional ultraviolet difference spectrum gas sensors are susceptible to ambient pressure changes, leading to inaccuracies in gas concentration measurements due to hardware fluctuations and system drift, with no effective pressure compensation method available.
Innovation Solution
An ambient pressure compensation structure and method for ultraviolet difference spectrum gas sensors, comprising a closed box with a pressure regulating assembly, digital pressure sensor, thermostatic controller, and industrial control computer, which simulates ambient pressure changes to establish a formula model for air pressure compensation, reducing non-linear errors in gas concentration measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional ultraviolet difference spectrum gas sensor is used for gas concentration detection, then the detection speed and accuracy are fast and accurate, but the measurement precision deteriorates when ambient pressure changes due to susceptibility to pressure effects and system drift
Solution Approach 1:
The patent introduces a pressure compensation chamber as an intermediary system between the gas sensor and the ambient environment. This chamber allows controlled variation of pressure conditions while isolating the sensor system, enabling the establishment of a pressure-compensation model that corrects for ambient pressure effects on gas concentration measurements.
Solution Approach 2:
The patent systematically varies the pressure parameter in the pressure compensation chamber to establish the relationship between pressure changes and sensor output. By changing pressure conditions and measuring the corresponding sensor responses, a compensation algorithm is developed that adjusts gas concentration readings based on ambient pressure variations.
2Measurement precision
If pressure calibration is performed frequently to maintain measurement accuracy under varying pressure conditions, then the measurement precision is maintained, but the productivity decreases due to repeated calibration operations
Solution Approach 1:
The patent performs pressure calibration in advance under controlled pressure conditions to establish a compensation model. This preliminary calibration creates lookup tables or mathematical relationships that can be applied automatically during normal operation, eliminating the need for frequent recalibration and maintaining both accuracy and productivity.
Solution Approach 2:
The patent implements a feedback mechanism where the measured pressure is continuously monitored and used to adjust gas concentration readings in real-time according to the pre-established compensation model. This automatic feedback loop maintains measurement precision without requiring manual recalibration operations.
3Adaptability or versatility
If the sensor operates in environments with large pressure range changes, then the adaptability is required, but the measurement precision deteriorates without pressure compensation
Solution Approach 1:
The patent develops a universal pressure compensation model that can be applied across different pressure conditions and gas types. The pressure compensation chamber and control system serve multiple functions: calibrating the sensor, characterizing pressure effects, and providing real-time compensation, making the system adaptable to various pressure environments without sacrificing precision.
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 effectively compensates for ambient pressure effects, improving the accuracy of gas concentration measurements by establishing a mathematical relationship between gas concentrations and ambient air pressure, thereby reducing measurement errors and providing a basis for industrial gas concentration measurement.
Implementation Method 1
gas analyzers based on ultraviolet difference spectrum gas sensor technology
Implementation Method 2
ultraviolet difference spectrum gas sensor technology
Implementation Method 3
the digital pressure sensor is used for measuring real-time pressure inside the working air chamber
Implementation Method 4
the thermostatic controller is used for keeping the temperature inside the closed box constant
Data Source
AI summary
An ambient pressure compensation structure for an ultraviolet difference spectrum gas sensor includes a closed box, an ultraviolet difference spectrum gas sensor, a digital pressure sensor, a thermostatic controller, an industrial control computer, a pressure regulating assembly and a limiting partition; the pressure regulating assembly and the limiting partition are arranged inside the closed box, the pressure regulating assembly comprises a piston, a regulating rod and a driving motor, the left side of the piston is connected with the regulating rod, the front end of the regulating rod penetrates out of the closed box and is connected with the driving motor, and the piston divides the interior of the closed box into a pressure regulating air chamber and a working air chamber. Also disclosed is an ambient pressure compensation method for an ultraviolet difference spectrum gas sensor.