Hydrant Valve Opening Detection Using Gyroscope Sensors
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Solution Overview
Problem
Fire hydrants lack visual indicators for determining the open position of their valves, and existing sensor devices are prone to malfunction and have high repair costs.
Innovation Solution
A sensor device with a gyroscope sensor and optional magnetic field sensor is used to detect the rotation rate and distance changes of the valve's operating device, allowing accurate determination of the opening degree, and includes features like a battery-powered evaluation unit and wireless communication for low complexity and ease of installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing sensor devices are used to determine valve opening degree, then measurement capability is provided, but device complexity and repair costs increase
Solution Approach 1:
The patent replaces complex mechanical sensor devices with a simple rotational sensor (such as a gyroscope or angular position sensor) that directly measures the rotation angle of the operating device. This substitution reduces mechanical complexity while maintaining measurement precision for determining valve opening degree.
2Ease of operation
If visual indicators are added to hydrants, then ease of determining open position is improved, but device complexity increases
Solution Approach 1:
The patent introduces an intermediary evaluation unit that processes sensor data and provides information about valve opening status. This intermediary layer translates complex sensor measurements into simple, easily interpretable indicators (such as LED signals or wireless notifications), improving ease of operation without adding complex visual mechanical indicators to the hydrant structure.
3Measurement precision
If complex sensor devices are installed, then measurement accuracy is improved, but ease of repair deteriorates
Solution Approach 1:
The patent segments the sensor system into modular components: a simple rotational sensor, an evaluation unit, and a communication interface. This segmentation allows the critical measurement function to be performed by a simple, easily replaceable sensor, while the evaluation unit handles complex processing. If repair is needed, only the simple sensor needs to be replaced, improving ease of repair while maintaining measurement accuracy.
4Reliability
If continuous monitoring is implemented, then reliability of valve status determination is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic monitoring instead of continuous monitoring, where the rotational sensor and evaluation unit check valve status at regular intervals or when triggered by specific events (such as attempted operation). This periodic action maintains reliability for detecting valve status changes while significantly reducing energy consumption compared to continuous monitoring.
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 sensor device provides reliable and accurate determination of the valve opening with low complexity and cost, enabling easy retrofitting and reducing energy consumption.
Implementation Method 1
at least one rotation rate sensor, for example a gyroscope sensor
Implementation Method 2
at least one magnetic field sensor and at least one permanent magnet interacting with one another
Data Source
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AI summary
The invention relates to a sensor device (4) for determining the degree of opening of a valve (2) of a fitting (1), in particular a hydrant, with at least one rotation rate sensor (10), for example a gyroscope sensor, wherein the fitting (1) has an operating device (3) rotatable about a rotation axis (9) between a closed position and an open position, in particular comprising a rotatable spindle (7), for the valve (2), wherein the at least one rotation rate sensor (10) can be arranged in and/or on the operating device (3) such that, in an arranged state, when the operating device (3) is actuated by rotating about the rotation axis (9), at least one movement signal can be detected by the at least one rotation rate sensor (10), wherein the degree of opening of the valve (2) can be determined based on the at least one movement signal.Furthermore, a fitting (1) and a method for determining the degree of opening of a valve (2) of a fitting (1) are claimed.