High Liquid-Level Alarm Device With Shared Antenna
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Solution Overview
Problem
Conventional high liquid-level alarm devices require multiple components for each alarm point, making them complex and inefficient for monitoring multiple liquid levels in a tank.
Innovation Solution
A high liquid-level alarm device with multiple liquid-level alarm units in a single casing, using a shared antenna for radio wave detection and transmission, allowing each unit to monitor different liquid levels and issue alarms independently, with units capable of alternating operations to ensure redundancy and simplicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple liquid-level alarm units are provided to monitor different alarm points, then the monitoring capability is improved, but the device complexity increases due to requiring multiple components for each alarm point
Solution Approach 1:
Multiple liquid-level alarm units are integrated into a single casing, sharing common components including the antenna, power supply circuit, and control circuit. This merging approach enables monitoring of multiple alarm points while reducing overall device complexity compared to having separate devices for each alarm point.
Solution Approach 2:
The alarm device is designed with multi-functional capability where a single device can monitor multiple different liquid levels and issue alarms for different alarm points. The system uses a single antenna and shared circuits to perform multiple monitoring functions simultaneously.
2Device complexity
If multiple alarm units share a common antenna, then the device complexity is reduced, but the reliability may worsen due to potential interference between units
Solution Approach 1:
The control circuit controls multiple alarm units to operate alternately in periodic fashion. When one alarm unit is performing determination operation, the other units do not perform determination operation. This time-division multiplexing approach allows sharing of the common antenna while minimizing interference between units, thus maintaining reliability.
Solution Approach 2:
The system includes a detection unit that detects radio waves and a control circuit that manages the operation timing of multiple alarm units based on detection results. This feedback mechanism ensures proper coordination between units sharing the common antenna, preventing interference and maintaining reliable 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 monitoring of multiple alarm points in a simplified configuration, enhancing productivity and allowing for automatic adjustment of alarm points without physical changes, ensuring reliable operation even if one unit fails.
Implementation Method 1
each of the liquid-level alarm units has a radio wave detection unit for detecting a radio wave, transmits a radio wave when not detecting a radio wave, and performs a determination operation as to whether a predetermined liquid level is reached
Data Source
AI summary
A high liquid-level alarm device is configured such that one casing includes a plurality of liquid-level alarm units, the liquid-level alarm units are directed for monitoring one liquid level, issue an alarm for a different height of the liquid level, have radio wave detection units for detecting a radio wave, respectively, each of the liquid-level alarm units has a radio wave detection unit for detecting a radio wave, transmits a radio wave when not detecting a radio wave, and performs a determination operation as to whether a predetermined liquid level is reached, and when one of the liquid-level alarm units is performing the determination operation, the rest of the liquid-level alarm units do not perform the determination operation.