Loudspeaker Load Isolation for Continuous Premises Broadcasting
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Solution Overview
Problem
Existing technologies for analyzing and processing abnormal loads in premises broadcasting devices fail to effectively distinguish and separate abnormal loads from normal loads, leading to broadcasting interruptions and potential damage to amplifiers, especially in public venues like theaters and multi-family houses, due to their reliance on fixed limit values and inefficient heat management.
Innovation Solution
A method and device that compares real-time individual load values with pre-stored normal load values to electrically separate abnormal loads, including distribution lines, by calculating a 2-tied value from load voltage and current, allowing for immediate identification and isolation of short or fluctuation states, and providing a control unit to manage connections and display alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional amplifier protection methods are used to detect short accidents in loudspeaker loads, then the amplifier can be protected from damage, but the entire broadcasting system stops and all normal loudspeaker loads are affected
Solution Approach 1:
The patent divides the loudspeaker load system into individually controllable segments. Each loudspeaker load is equipped with its own protection circuit that can detect and respond to abnormal conditions independently. When a short accident occurs in one load, only that specific segment is disconnected from the amplifier output, while other segments continue to operate normally, thus maintaining broadcasting continuity while protecting the amplifier.
2Reliability
If the amplifier output is interrupted to protect against short accidents, then the amplifier is protected, but broadcasting stops for all connected loudspeaker loads
Solution Approach 1:
The patent implements preliminary protective measures by installing protection circuits at each loudspeaker load location before short accidents can occur. These circuits continuously monitor the electrical conditions and are ready to immediately disconnect only the affected load when abnormality is detected, preventing the need for complete system shutdown and minimizing broadcasting interruption time.
3Productivity
If individual load monitoring is implemented to identify abnormal loads, then selective disconnection is possible, but the device complexity increases
Solution Approach 1:
The patent enables each loudspeaker load to perform self-diagnosis and self-protection through integrated monitoring circuits. Each load's protection circuit automatically detects abnormal conditions such as shorts or disconnections and triggers local disconnection without requiring complex centralized control. This self-service approach achieves selective disconnection capability while keeping the overall system complexity manageable.
Data Source
AI summary
A method and a device for analyzing and processing an abnormal load on a premises broadcasting device are provided. More particularly, a method for analyzing and processing an abnormal load on a loudspeaker including a distribution line connected to an output of an amplifier for the premises broadcasting device is provided. The method includes the steps of: comparing and analyzing a real-time individual load value with an individual load value at the early stage of abnormality analysis for an individual loudspeaker load; and electrically separating only the loudspeaker load, including the distribution line corresponding to a short, from the output of the amplifier for the premises broadcasting device in the comparison and analysis step.