Radar Sensor Distribution Machine Measurement
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Solution Overview
Problem
Existing methods for determining the distribution characteristics of centrifugal spreaders require numerous data points collected by multiple sensors, resulting in significant time and effort to achieve satisfactory results.
Innovation Solution
A method using radar sensors to detect average horizontal throwing angles, variance of throwing angles, and average throwing distances, allowing for the calculation of distribution characteristics with fewer sensors, and adjusting settings for precise distribution control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If many sensors are used to detect distribution characteristics, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces mechanical/optical sensors with a radar-based measurement system. The radar system uses electromagnetic waves to detect the position and velocity of spread material particles, eliminating the need for complex sensor arrays while maintaining measurement precision. The radar receiver processes Doppler-shifted signals to determine material distribution characteristics without requiring physical contact or complex sensor positioning.
Solution Approach 2:
The radar system performs multiple measurement functions simultaneously using a single device. It detects both the position and velocity of spread material particles, and can determine distribution characteristics across the entire spreading width with one radar unit, whereas traditional methods required multiple specialized sensors arranged in complex patterns.
2Measurement precision
If many sensors are arranged to cover the entire scattering range, then measurement precision is improved, but loss of time increases due to the effort required
Solution Approach 1:
The radar system enables continuous measurement of distribution characteristics during the spreading operation. The radar waves continuously illuminate the spread material, and the receiver continuously processes returning signals, providing real-time data on lateral distribution without interrupting the spreading process or requiring sequential sensor activation.
Solution Approach 2:
The patent replaces time-consuming mechanical sensor scanning or manual measurement procedures with rapid electromagnetic wave-based detection. The radar system captures distribution data across the entire spreading width simultaneously through electromagnetic radiation, reducing measurement time from minutes or hours to seconds.
3Measurement precision
If a large number of sensors are used to obtain detailed information, then measurement precision is improved, but loss of substance increases due to the resources required
Solution Approach 1:
The patent replaces resource-intensive sensor manufacturing, installation, and maintenance with a radar system that uses electromagnetic waves. The radar system requires no physical contact with the spread material, eliminating contamination risks and the need for numerous physical sensors that would consume materials and require ongoing resource input for operation and maintenance.
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 precise prediction and adjustment of distribution characteristics with fewer sensors, reducing effort and time while providing detailed control over the distribution process.
Implementation Method 1
at least one non-contact sensor, in particular radar sensor, determines at least the mean throwing distance and its variance, preferably independently of fertilizer-specific parameters
Implementation Method 2
the flight speed, which is obtained by means of Doppler measurement of the radar sensors
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A method for determining the distribution characteristic of a distribution machine, and a distribution machine for carrying out such a method in which distribution parameters of the distribution machine, such as throw range (W) and launch angle and their variances, are determined by means of at least one movable or two stationary sensors (1-7) in order to determine the distribution characteristic of the distribution machine using stored calculation rules. This characteristic can be displayed to the operator of the distribution machine or advantageously used to adjust distribution parameters of the distribution machine.