Gas Sensor Calibration Using Control Voltage Response Mapping

The patent implements a universal test chamber that can calibrate gas sensors for multiple different gases and use cases through software configuration rather than requiring separate physical chambers for each gas type. The system uses a single chamber equipped with gas injection capabilities and controlled environment settings that can be programmatically adjusted to simulate different target gas conditions, thereby achieving multi-functionality without proportionally increasing hardware complexity

The patent changes the operational parameters of the test chamber (such as gas concentration, temperature, humidity) through software control to adapt to different calibration requirements. By dynamically adjusting these parameters rather than building dedicated chambers for each parameter set, the system maintains calibration accuracy across multiple use cases while avoiding the expense and complexity of multiple physical chambers

The patent converts the potential harm of cross-contamination into a benefit by implementing thorough purification and baseline reset protocols between different gas calibration sequences. The system deliberately introduces cleaning cycles and baseline measurements that not only prevent cross-contamination but also verify the chamber's readiness for the next calibration, turning a potential weakness into a quality assurance feature

The patent incorporates feedback mechanisms that monitor the test chamber environment between calibration sequences to detect any residual contamination. The system uses baseline resistance measurements and environmental sensors to feedback on the chamber's cleanliness status, and only proceeds with the next calibration when contamination levels are below predetermined thresholds, thereby actively preventing cross-contamination issues

The patent performs preliminary actions by explicitly establishing a known baseline environment through controlled procedures before actual calibration begins. Rather than assuming a clean environment, the system actively creates and records a reference baseline state using purified air or known reference conditions, storing this baseline data for later comparison during calibration operations, thereby eliminating the ambiguity between clean environment and low concentration gas

The patent introduces an intermediary reference baseline measurement that acts as a mediator between the assumed clean environment and the actual calibration measurements. This baseline serves as a reference point that allows the system to distinguish between true clean conditions and low concentration target gas presence by comparing against the established baseline, thereby improving measurement precision while maintaining process simplicity