Precipitation Meter With Sealed Heating Units
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Solution Overview
Problem
Conventional precipitation meters using bimetal heating systems face issues with inaccurate measurements due to snow accumulation, delayed heating system activation, corrosion, and fire risks from combustible materials, primarily because they rely on thermodynamic changes that are slow to detect and are not fully sealed.
Innovation Solution
The precipitation meter incorporates an upper and lower heating unit with sealed spaces, using antifreeze and sensors to maintain temperature and prevent snow accumulation, with a reed switch unit generating pulse signals for accurate precipitation calculation, and a completely sealed structure to prevent corrosion and fires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heating coils or heating pads are attached to the lower portion of the receiver, then the lower portion is heated, but snow accumulates on the entrance part where heat transfer is weak, reducing measurement accuracy
Solution Approach 1:
The heating system is divided into multiple independent heating units positioned at different locations (upper receiver and lower receiver) to provide distributed heating coverage, ensuring snow is prevented from accumulating at multiple critical points including the entrance part where heat transfer was previously weak
Solution Approach 2:
The heating approach transitions from one-dimensional (only lower portion) to three-dimensional coverage by adding upper receiver heating, creating a comprehensive thermal field that prevents snow accumulation throughout the entire precipitation collection path
2Ease of operation
If bimetal is used to operate the heating system, then the heating system can be controlled, but surface temperatures cannot be detected immediately due to snow accumulation, causing delays in heating activation
Solution Approach 1:
Temperature sensors are introduced as intermediary devices to directly detect surface temperatures and provide real-time feedback to the control unit, eliminating the dependency on slow thermodynamic changes of bimetal and enabling immediate heating activation when snow accumulation is detected
Solution Approach 2:
The control unit receives real-time temperature data from sensors and dynamically adjusts heating activation based on current conditions, enabling prompt response to temperature changes and immediate prevention of snow accumulation without relying on delayed bimetal expansion
3Ease of manufacture
If heating coils are mounted in an open space, then the heating system can be installed, but corrosion and fire risks occur due to lack of sealing
Solution Approach 1:
A sealed housing structure is implemented to enclose the heating units, creating a protected environment that prevents direct exposure to corrosive elements and combustible materials while maintaining installation feasibility through modular design
Solution Approach 2:
The sealed housing creates a protected environment around the heating units, isolating them from corrosive atmospheric conditions and combustible particles, thereby preventing corrosion and fire risks while maintaining system reliability
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
This design enhances measurement accuracy, promptly activates the heating system, prevents snow accumulation, and ensures the heating unit's reliability by using antifreeze and sensors to maintain temperature and a sealed structure, reducing corrosion and fire risks.
Implementation Method 1
an upper heating unit embedded in the upper receiver, the upper heating unit being configured to provide heat to an upper surface of the upper receiver so as to prevent snow from being accumulated thereon
Implementation Method 2
a reed switch unit generated beneath the tipping bucket unit, the reed switch unit detecting the seesawing movement of the tipping bucket unit and generating one or more pulse signals in response thereto
Implementation Method 3
a siphon positioned under the center area of the funnel-shaped part, the siphon receiving the water from the lower receiver and then allowing one or more waterdrops to be dropped therethrough
Data Source
AI summary
There is provided with a precipitation meter which includes: an upper receiver in which an upper heating unit is embedded to provide heat to an upper surface of the upper receiver to prevent snow from being accumulated thereon, wherein the upper receiver is comprised of a first inner side surface forming inner space for collecting water and a first outer side surface which is an opposite surface of the first inner side surface; a lower receiver with a funnel-shaped part, positioned underneath the upper receiver; a siphon, positioned under the center area of the funnel-shaped part; a tipping bucket unit for receiving the waterdrops from the siphon; a precipitation calculation unit for receiving information on the seesawing movement of the tipping bucket unit and calculating an amount of precipitation by referring to the seesawing movement; and a drainage unit for allowing the waterdrops to be drained out.