ATR Sensor Rumen Bolus for Dissolved CO2 Monitoring
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Solution Overview
Problem
Existing methods for monitoring rumen pH in ruminants are inadequate as they drift after weeks of use, and focus on pH decline rather than dissolved carbon dioxide accumulation, which is the actual cause of nutritional diseases such as acidosis, leading to inaccurate measurements and ineffective prevention.
Innovation Solution
An apparatus using an attenuated total reflectance (ATR) sensor with a hermetic casing, directly measuring dissolved carbon dioxide concentrations in the rumen liquid, eliminating the need for gas migration and providing accurate, long-term monitoring through wireless communication and self-calibration, optimizing milk productivity and preventing nutritional diseases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an electrochemical pH sensor is used to measure rumen pH, then the pH value can be monitored, but the sensor drifts after weeks of use leading to inaccurate measurements
Solution Approach 1:
The patent changes the measurement parameter from pH to dissolved carbon dioxide concentration. By measuring dCO2 instead of pH, the system avoids the drift problem of electrochemical pH sensors while still monitoring rumen fermentation status, since dCO2 accumulation is the actual cause of nutritional diseases
Solution Approach 2:
The patent replaces the electrochemical pH sensor with an optical sensor system. The optical sensor uses light absorption properties to measure dissolved carbon dioxide, substituting the mechanical/electrochemical measurement approach with an optical one that does not suffer from the same drift issues
2Productivity
If modern high-energy feeding diets are used to increase milk production, then energy intake improves, but dissolved carbon dioxide accumulates in the rumen causing nutritional diseases
Solution Approach 1:
The patent implements a feedback mechanism by continuously monitoring dissolved carbon dioxide levels in the rumen and using this information to adjust feeding management. The system provides real-time data on dCO2 accumulation, allowing farmers to modify diets or feeding schedules to prevent acidosis while maintaining high milk production
Solution Approach 2:
The patent enables preliminary action by detecting dissolved carbon dioxide accumulation before it reaches dangerous levels. The monitoring system provides early warning signals that allow preventive measures to be taken, such as adjusting feed composition or adding buffers, before nutritional diseases develop
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 apparatus effectively monitors dissolved carbon dioxide concentrations, enabling precise prediction and prevention of nutritional diseases, while promoting efficient rumen fermentation and improving milk productivity by providing real-time data for optimized feeding management.
Implementation Method 1
the sensing unit includes at least one attenuated total reflectance (ATR) sensor
Implementation Method 2
The IR-ATR dCO2 sensor itself contains an IR-LED light for dCO2... The light emitted by these sources is sent through the light channel into the ATR prims where the IR light is completely diffracted, a small amount of light in the evanescent wave penetrates the rumen fluid
Implementation Method 3
The hermetic casing provides a hermetic protection from the outside environment
Implementation Method 4
The IR-ATR dCO2 sensor itself contains an IR-LED light for dCO2 and water IR-LED light source
Implementation Method 5
a small amount of light in the evanescent wave penetrates the rumen fluid in contact with the small window in the rumen bolus cap
Data Source
AI summary
An apparatus for monitoring nutrition, especially fermentation in a rumen of a ruminant, is designed to be orally applied to the ruminant and to stay permanently in the rumen. The apparatus includes: a) at least one sensing unit for sensing a characteristic value of dissolved carbon dioxide in the liquor of rumen and/or reticulum; and b) at least one first communication unit for the wireless communication of data with a respective second communication unit outside the ruminant. The sensing unit includes at least one attenuated total reflectance (ATR) sensor.