Magnetic Flow Sensor for Detecting Blockages in Liquid Lines
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Solution Overview
Problem
Agricultural liquid application equipment often experiences undetected blockages in liquid lines due to debris, leading to uneven material application and reduced crop yields, as operators cannot directly observe the liquid applicators while driving and existing visual monitoring systems lack automated reporting and real-time feedback.
Innovation Solution
A system using magnetic field sensors and Hall-Effect sensors to monitor the level of a magnetized ball within flow gauges, providing immediate feedback to operators about flow rate changes, allowing for automated detection of blockages and offering customizable sensitivity settings and 'heads-up' display monitoring, with reporting capabilities via Internet-based utilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If visual flow monitors with transparent columns and indicator balls are used, then operators can observe flow rates, but operators cannot detect blockages in real-time while driving equipment
Solution Approach 1:
The patent replaces the mechanical visual observation system with electronic sensors (optical sensors, Hall-Effect sensors, or magnetic field sensors) that automatically detect indicator ball positions and transmit data to the operator. This substitution enables real-time blockage detection without requiring the operator to visually monitor the equipment, resolving the contradiction between reliable detection and ease of operation.
Solution Approach 2:
The system implements automated feedback by having sensors continuously monitor indicator ball positions and immediately communicate blockage status to the operator through electronic displays or alerts. This feedback mechanism ensures reliable real-time detection while allowing the operator to maintain normal driving operations without constant visual monitoring.
2Measurement precision
If multiple visual flow monitors are installed for multi-row applicators, then flow rates can be observed, but operators cannot quickly discern inoperative conditions among multiple applicators
Solution Approach 1:
The patent replaces manual visual inspection of multiple indicators with automated electronic sensors that continuously monitor each applicator's indicator ball position. The sensor system automatically identifies which specific applicator has a blockage and communicates this information electronically, eliminating the time required for operators to visually scan and interpret multiple indicators while maintaining precise flow rate monitoring.
Solution Approach 2:
The system creates electronic copies of the visual indicator information through sensors that detect indicator ball positions and translate them into electronic signals. This copying process allows the operator to receive processed blockage information without directly observing multiple visual indicators, reducing detection time while preserving measurement precision.
3Extent of automation
If automated electronic sensing equipment is added to visual flow indicators, then real-time monitoring is enabled, but device complexity increases
Solution Approach 1:
The patent replaces complex manual monitoring procedures with relatively simple electronic sensor systems. By using optical sensors, Hall-Effect sensors, or magnetic field sensors that directly detect indicator ball positions, the system achieves automated real-time monitoring with minimal added complexity. The sensors interface directly with existing visual indicator mechanisms, requiring only simple electronic circuitry and display components.
Solution Approach 2:
The system uses the existing visual indicator ball as an intermediary between the liquid flow and the electronic sensor. The indicator ball's physical position, already determined by flow rate, serves as a simple mechanical signal that electronic sensors can easily detect. This intermediary approach enables automation while keeping the overall system complexity low, as it builds upon the existing visual indicator infrastructure rather than requiring completely new sensing mechanisms.
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
The system effectively notifies operators of flow rate changes, reducing the risk of undetected blockages and ensuring consistent liquid application, thereby improving crop yields by providing real-time monitoring and automated reporting capabilities.
Implementation Method 1
A sensor system includes a housing, a printed circuit board, and a magnetic field sensor mounted to the printed circuit board. The magnetic field sensor may be a Hall-Effect sensor or other type of magnetic field sensor.
Implementation Method 2
The magnetic field sensor may be a Hall-Effect sensor or other type of magnetic field sensor.
Data Source
AI summary
A system and method for monitoring inefficient flow rates in a liquid-flow distribution system, such as that which is used in agricultural liquid application equipment. This may include blockages or punctures in a liquid line. The system generally includes a plurality of gauges for monitoring the supply line flow rate in a liquid application system which are monitored by a number of sensors. Immediate feedback is presented to the operator of the vehicle inside the cab. The system alerts the operator when a blockage, loss, or increase of flow rate has occurred in one of the liquid lines. The system may merely indicate that one of the lines is blocked, or the system may be more sophisticated such that it can indicate which line is blocked and adjust the flow in that line in an attempt to clear the blockage.