Siphon Rainfall Measurement with Pressure Sensor Self-Compensation

The patent replaces the mechanical tipping bucket sensor with an electronic pressure sensing system. The pressure sensor detects water level changes in the siphon drainage container, and these signals are processed by a microcontroller to determine rainfall amounts. This substitution of mechanical components with electronic sensing and processing systems achieves both low power consumption and high measurement accuracy (error within ±2%).

The patent changes the measurement parameter from mechanical displacement (tipping bucket) to pressure-based water level detection. By monitoring pressure variations corresponding to water level changes in the siphon container, the system achieves precise rainfall measurement. The pressure sensor converts physical water level parameters into electrical signals that can be accurately processed and transmitted.

The patent eliminates the mechanical paper-tape recording mechanism by implementing an electronic data acquisition and wireless transmission system. Pressure sensors continuously monitor water levels, and a microcontroller processes these signals to calculate rainfall amounts. The results are transmitted remotely via wireless communication modules, eliminating the need for mechanical recording components and reducing overall power consumption while maintaining high measurement accuracy.

The siphon drainage mechanism operates automatically based on water level principles without requiring external power or control. When rainfall accumulates in the container, the siphon automatically activates at a predetermined water level to drain the container, creating a self-regulating measurement cycle. This passive, self-service operation minimizes power consumption while maintaining measurement accuracy through the automatic drainage cycle.

The patent replaces the complex mechanical paper-tape recording system with a simplified electronic architecture. Instead of mechanical drums, pens, and paper feeds, the system uses pressure sensors, a microcontroller for data processing, and wireless communication modules for remote data transmission. This electronic substitution dramatically reduces mechanical complexity while enabling remote operation and maintaining measurement accuracy through digital signal processing.

The patent extracts and removes the mechanical recording components (paper tape, mechanical writing mechanisms) from the system entirely. By separating the measurement function (pressure sensing) from the recording function (wireless transmission), the system eliminates complex mechanical subsystems. The extracted measurement data is transmitted electronically, simplifying the overall device structure while maintaining high measurement precision through dedicated sensing and communication modules.