Pressure Cooker Dual-Sensor Validation to Prevent Explosion Risk

A temperature sensor is introduced as an intermediary measurement element that indirectly verifies pressure values. The temperature sensor measures the actual temperature in the pressure chamber, and this measured temperature is converted into a comparable pressure value using stored vapor pressure curve data. This intermediary measurement path allows cross-verification of the primary pressure sensor readings without directly adding another pressure sensor, thereby improving reliability while maintaining measurement precision.

The system implements a feedback mechanism where the appliance control continuously compares the directly measured pressure value with the indirectly derived pressure value from temperature measurement. When deviations exceed a predetermined tolerance, the system triggers safety measures such as aborting the cooking process. This feedback loop ensures that sensor failures or disturbances are detected and corrected, enhancing the reliability of safety protection while maintaining accurate pressure control.

The temperature sensor serves multiple functions: it monitors the actual temperature for cooking control purposes and simultaneously provides an indirect pressure verification path for safety protection. By making the temperature sensor multi-functional, the system achieves enhanced safety without adding dedicated safety sensors, thereby avoiding increased device complexity while improving reliability.

The system uses its existing temperature measurement capability to serve the additional function of pressure verification. Instead of requiring separate safety sensors, the system makes the temperature sensor work harder by utilizing its measurements for both cooking control and safety monitoring. This self-service approach allows the system to improve its own safety without external additions that would increase complexity.

The temperature sensor acts as an intermediary that measures the actual conditions in the pressure chamber without being subjected to the disturbances in the pressure reduction line. The measured temperature is then converted into a comparable pressure value using stored vapor pressure curves. This intermediary approach provides an alternative measurement path that is not affected by disturbances in the pressure reduction line, thereby improving measurement precision while maintaining ease of operation through indirect measurement.

Instead of directly measuring pressure in the disturbed pressure reduction line, the system creates a copy of the pressure information through temperature measurement and conversion using stored vapor pressure curve data. This copied pressure value reflects the actual conditions in the pressure chamber without being affected by disturbances in the pressure reduction line, thereby improving measurement precision while maintaining the simplicity of indirect measurement.