Camera-Based Teat Cup Attachment Detection in Milking Systems
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Solution Overview
Problem
Existing methods for automatically milking dairy animals, such as cows, are expensive and unreliable due to the use of mass inertia sensors, which can lead to teat cup contamination and damage if they malfunction.
Innovation Solution
The method employs a camera to analyze the attachment of the teat cup to the teat, using spatial imaging to determine proper connection, vacuum adjustment, and control actions, eliminating the need for mass inertia sensors and improving reliability and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mass inertia sensor is used to monitor the teat cup, then the attachment status can be detected, but the system becomes expensive and unreliable
Solution Approach 1:
The patent replaces the mechanical mass inertia sensor with an optical camera system. The camera captures images of the teat and teat cup attachment, and image processing algorithms analyze the attachment status based on visual features such as the position of the teat end relative to the teat cup opening, the shape of the teat, and the presence of milk flow. This substitution eliminates the need for expensive and unreliable mechanical sensors while providing a more robust and cost-effective solution.
Solution Approach 2:
The patent creates a visual copy (image) of the physical attachment state using a camera. Instead of using a physical sensor that directly measures mass or position, the system captures an optical representation of the attachment and uses image analysis to infer the attachment status. This copying approach allows for non-contact, non-intrusive monitoring that is both cheaper and more reliable than mechanical sensors.
2Reliability
If a mass inertia sensor is used to monitor the teat cup, then attachment status can be detected, but the risk of contamination and damage increases when the sensor malfunctions
Solution Approach 1:
By replacing the mechanical mass inertia sensor with an optical camera system, the patent eliminates the risks associated with mechanical sensor failure. The camera is a non-contact device that does not interfere with the milking process, so it cannot cause contamination or mechanical damage to the teat or teat cup. Even if the camera malfunctions, it poses no physical harm to the system.
Solution Approach 2:
The patent introduces light as an intermediary between the camera and the teat/cup system. The camera captures reflected light from the teat and teat cup to determine attachment status, without any physical contact between the sensing device and the milking components. This intermediary approach ensures that the monitoring system cannot cause contamination or mechanical damage, as light is a non-contact, non-intrusive medium.
3Productivity
If the teat cup is tightly attached to ensure proper milking, then milk extraction efficiency improves, but the force on the teat increases causing potential damage
Solution Approach 1:
The patent implements continuous feedback monitoring of the attachment status using image analysis. The system repeatedly captures images during the milking process and analyzes features such as the position of the teat end, the shape of the teat, and the presence of milk flow to determine if the attachment remains proper. Based on this feedback, the system can adjust the vacuum pressure or pulsed vacuum parameters to maintain optimal attachment without excessive force, thereby preventing teat damage while ensuring efficient milk extraction.
Solution Approach 2:
The patent uses dynamic adjustment of vacuum parameters based on real-time image analysis. Rather than maintaining a fixed vacuum level, the system continuously monitors the attachment status and adjusts the vacuum pressure or pulsed vacuum timing to optimize the balance between attachment security and teat protection. This dynamic approach allows the system to adapt to changing conditions during milking, ensuring both productivity and animal welfare.
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 camera-based system provides reliable and cost-effective control of the milking process, reducing contamination and damage by accurately assessing teat cup attachment and adjusting vacuum and pulling forces, thereby enhancing the efficiency and quality of milk extraction.
Implementation Method 1
a camera (100) is provided, which produces at least one image of the teat (46) and the teat cup (28)
Implementation Method 2
apply a milking vacuum in the area inside the liner and to apply a pulsating, or pulsation vacuum in the area between the liner and the casing
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Method of controlling a milking implement for automatically milking a dairy animal with an udder, such as a cow, which milking implement comprises a camera (100) and a teat cup (28), which method comprises the following steps: attaching the teat cup (28) to a teat (46) of the udder, followed by producing by means of the camera (100) an image of at least a part of the udder and of at least a part of the teat cup (28), making an analysis of the image of the udder with the teat cup,1 and performing at least one control action by means of the milking implement, based on the analysis.