Mower Air Flow Measurement Recess Design
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Solution Overview
Problem
Conventional methods for measuring air speed or pressure from a mower unit are inaccurate due to interference with the air flow and instability in positioning the measurement devices, making it difficult to measure accurately while the mower is in operation.
Innovation Solution
A measuring apparatus with air speed and pressure sensors installed in a recessed floor structure, supported by a frame, allowing for precise measurement without disrupting the air flow and featuring a lift and moving mechanism for stable positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a portable air speedometer or air pressure gauge is brought close to the lower part of the mower unit to measure air speed or pressure, then the measurement can be performed, but the measurer's hand and the device interrupt the air flow, causing variations in the flow and making it difficult to measure accurately
Solution Approach 1:
The patent introduces a recess in the floor as an intermediary structure that houses the measurement device. This recess acts as a mediator between the measurement device and the air flow, allowing the device to be positioned close to the mower unit without directly interrupting the air stream. The recess provides a dedicated space for the sensor while maintaining the natural airflow path of the mower unit.
Solution Approach 2:
The patent transitions from a horizontal placement of the measurement device (which would directly block airflow) to a vertical arrangement by creating a recess in the floor. This dimensional change allows the sensor to be positioned at the optimal measurement location without interfering with the horizontal air flow generated by the mower unit, thus resolving the contradiction between measurement accessibility and airflow disruption.
2Measurement precision
If the measurer brings the air speedometer or air pressure gauge close to the lower part of the mower unit, then measurement is possible, but the measurer's hand becomes unsteady, making it difficult to maintain a stable position
Solution Approach 1:
The recess in the floor serves as a stable intermediary structure that holds the measurement device in a fixed position. This eliminates the need for the measurer to manually hold the device, providing a steady and reliable mounting structure that maintains consistent positioning during measurement operations.
Solution Approach 2:
The recess structure provides self-contained positioning for the measurement device, eliminating the need for continuous manual adjustment. The device is automatically positioned and stabilized by the recess structure itself, allowing the system to maintain stable positioning without requiring ongoing human intervention.
3Measurement precision
If the air speedometer or air pressure gauge is positioned close to the lower part of the mower unit, then the measurement can capture air flow characteristics, but the device complexity increases due to the need for stable positioning mechanisms
Solution Approach 1:
The patent extracts the positioning function from the measurement device itself and relocates it to the floor structure. By taking out the positioning requirement from the portable device and embedding it in the fixed floor recess, the solution simplifies the measurement device while providing stable positioning through the structural element.
Solution Approach 2:
The patent merges the positioning function with the floor structure, combining the structural support and measurement functionality into a unified system. The recess in the floor serves both as a structural element and as the positioning mechanism, eliminating the need for separate complex positioning devices.
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
Enables accurate measurement of air speed and pressure while the mower is in operation, improving measurement efficiency and stability by minimizing interference with the air flow and allowing for precise positioning.
Implementation Method 1
a air speed measuring device disposed in the recess for measuring a speed of air blown by the mower, the air speed measuring device having one or more air speed detecting elements
Implementation Method 2
a air pressure measuring device disposed in the recess for measuring a pressure of air blown by the mower, the air pressure measuring device having one or more air pressure detecting elements
Data Source
AI summary
A measuring apparatus for a mower includes a floor defining a downward recess with respect to a floor surface, and an air speed measuring device or air pressure measuring device disposed in the recess for measuring a speed or pressure of air blown by the mower. The measuring device has air speed detecting elements or air pressure detecting elements. The air speed detecting elements or air pressure detecting elements have detecting heights including a height level with the floor surface.