Volumetric Pump Sensor System for Flap Position Detection
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Solution Overview
Problem
Existing volumetric pumps with sensor systems cannot reliably detect the HALF-CLOSED state of the front flap, which is critical for patient safety as it may lead to uncontrolled fluid flow, and current systems require significant hardware and calibration efforts.
Innovation Solution
A sensor system using an analog Hall sensor and a magnet to detect the rotational position of the front flap, coupled with a locking mechanism, allows for reliable detection of OPEN, HALF-CLOSED, and CLOSED states by interpreting signal strength, eliminating the need for multiple sensors and extensive calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If proximity switches with binary switching logic are used to detect flap positions, then the sensor system is simple to implement, but it cannot reliably detect the HALF-CLOSED position
Solution Approach 1:
The patent replaces electromagnetic proximity switches with a mechanical linkage system that mechanically connects the flap to a sensor. This mechanical substitution enables reliable detection of the HALF-CLOSED position through the physical coupling between the flap and sensor components, eliminating the limitations of binary electromagnetic sensing while maintaining system simplicity.
Solution Approach 2:
The patent introduces an intermediary mechanical linkage component that connects the flap to the sensor. This intermediary element translates the flap's positional state into a reliable sensor signal, enabling detection of intermediate HALF-CLOSED positions without requiring complex sensor arrays or multiple sensors.
2Measurement precision
If multiple sensors are used to detect all flap positions, then detection accuracy is improved, but hardware requirements and calibration effort increase significantly
Solution Approach 1:
The patent designs a single sensor system that serves multiple functions: detecting OPEN, HALF-CLOSED, and CLOSED positions. The universal sensor design eliminates the need for multiple specialized sensors, reducing hardware complexity while maintaining high measurement precision through the mechanical linkage's ability to distinguish between different flap positions.
Solution Approach 2:
The patent utilizes parameter changes in the mechanical linkage system to enable a single sensor to detect different flap positions. By changing the physical state or position of the linkage components, the system transforms the detection task from requiring multiple sensors to using a single sensor that responds to different parameter states, thereby reducing hardware requirements while maintaining precision.
3Ease of operation
If the front flap is made accessible and operable on the front of the device, then user control is improved, but the risk of uncontrolled flow increases when the flap is in HALF-CLOSED position
Solution Approach 1:
The patent implements a feedback mechanism through the mechanical linkage that connects the flap position to the sensor system. This feedback loop continuously monitors the flap's position and provides real-time information about whether the flap is in OPEN, HALF-CLOSED, or CLOSED state, enabling the system to respond appropriately to prevent uncontrolled flow while maintaining ease of operation.
Solution Approach 2:
The patent prepares for potential harmful effects by implementing the mechanical linkage sensor system that detects HALF-CLOSED positions before uncontrolled flow can occur. The system proactively identifies the critical state and can trigger alerts or prevent operations, cushioning against the risk of uncontrolled flow while preserving user control and ease of operation.
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 accurate detection of all three flap positions with a single sensor, reducing hardware and calibration requirements, and provides an alarm for prolonged HALF-CLOSED states, ensuring safe operation and reduced risk of uncontrolled fluid flow.
Implementation Method 1
analog sensor, for example, a Hall sensor
Data Source
Figure 1~2
AI summary
The invention relates to a sensor system for a volumetric pump operating on the linear peristalsis principle, which sensor system includes at least one sensor device (26); at least one sensor transmitter device (27); and a sensor output signal processing device (28), wherein the sensor transmitter device (27) is arranged to apply a detection variable which varies as a function of the path position to the sensor device (26) along a predetermined path, on which a fixedly arranged sensor device (26) and a movably arranged sensor transmitter device (27) or a movably arranged sensor device (26) and a fixedly arranged sensor transmitter device (27) move relative to each other; the sensor device (26) is configured to output a detection signal corresponding to a respective path position on the basis of the varying detection variable; and the sensor output signal processing device (27) is designed to receive the detection signal output by the sensor device and, on the basis of the received detection signal, to distinguish at least three path positions.