Optical Lameness Detection for Livestock
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Solution Overview
Problem
Current automatic lameness detection systems in livestock are cumbersome, costly, and often require invasive methods or complex signal analysis, making early detection impractical and unreliable, especially in farm environments where animals are confined or dirty.
Innovation Solution
An optical imaging device that captures images of an animal's legs over time to detect if they are raised, indicating lameness, using a camera system integrated into milking or feeding stalls, which can identify individual animals and provide early alerts for further investigation and treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors are attached to the animal to detect abnormal movement, then lameness detection capability is improved, but device complexity and reliability deteriorate due to sensor detachment and complex signal analysis
Solution Approach 1:
The patent replaces mechanical sensor attachment systems with an optical imaging system. Instead of using accelerometers and other motion sensors that require physical attachment to the animal, the invention uses a camera to capture images of the animal's legs and employs image processing algorithms to detect lameness. This substitution eliminates the problems of sensor detachment and complex mechanical signal analysis while maintaining reliable detection capability.
Solution Approach 2:
The patent creates an optical copy (image) of the animal's leg position rather than directly measuring physical movement. By capturing visual information and analyzing it through image processing, the system obtains measurement data without physical contact with the animal, thereby avoiding sensor attachment issues and simplifying the detection mechanism.
2Measurement precision
If load cell plates are installed at floor level for detection, then measurement precision is improved, but device complexity and installation cost worsen
Solution Approach 1:
The patent replaces the mechanical load cell plate system with an optical imaging system. Instead of measuring limb reaction forces through physical weight sensors embedded in the floor, the invention uses a camera to visually detect the position of the animal's legs and determines lameness based on leg posture and contact with the floor. This eliminates the need for complex floor installation and system configuration while providing sufficient measurement precision for early lameness detection.
Solution Approach 2:
The patent creates a visual copy of the leg-floor interaction rather than directly measuring mechanical forces. By capturing images of the animal's legs and analyzing their position relative to the floor surface, the system obtains measurement data about weight bearing and limb posture without requiring physical sensors in the floor, thereby simplifying the overall system.
3Measurement precision
If multiple sensors are used to monitor animal movement, then detection accuracy is improved, but ease of operation deteriorates due to sensor maintenance and animal distress
Solution Approach 1:
The patent replaces multiple physical sensors with a single optical imaging system. Instead of attaching multiple accelerometers and motion sensors to the animal that require maintenance and cause distress, the invention uses a camera to capture images and processes them through image analysis algorithms. This single non-invasive device eliminates maintenance requirements and animal handling issues while maintaining high detection accuracy.
Solution Approach 2:
The patent uses optical copying to obtain measurement data about animal gait without physical contact. By capturing images of the animal's legs during movement and analyzing the visual information, the system achieves accurate gait monitoring without the need for multiple physical sensors, thereby simplifying operation and eliminating animal distress.
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 simple, non-invasive, and cost-effective early detection of lameness, reducing the need for extensive installation and veterinary intervention, allowing for rapid identification and treatment to minimize production losses.
Implementation Method 1
An optical imaging device that captures images of an animal's legs over time to detect if they are raised, indicating lameness
Data Source
Figure 1~2
Figure 3
AI summary
A device and method is proposed for detecting lameness in a standing animal that comprises at least one optical imaging device (20) and a processing arrangement (30) with the optical imaging device. The optical imaging device (20) is arranged in a position to capture at least one image showing the lower portions of at least one leg of an animal (100) and to forward the image to the processing arrangement (30), which, in turn, is configured to analyse the image to determine a condition of lameness when said at least one leg is held in a raised position on or above ground level. The system is particularly suited to detecting lameness in dairy animals and can be integrated in a milking or feeding stall or with an automatic or semi-automatic milking system.