Intercom Master Station Group Routing for Cross-System Audio
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Solution Overview
Problem
Intercom systems struggle to allow users of substations other than the caller to share the contents of communication when a caller communicates with a wireless terminal from a different wireless system, leading to confusion.
Innovation Solution
A master station connected to both internal and external radios, capable of receiving and transmitting audio signals, uses group setting and destination group information to ensure that audio signals are properly routed to the appropriate substations, allowing for seamless communication between intercom and external wireless systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the intercom system is configured to cooperate with another wireless system for wider range communication, then communication range is improved, but users of substations other than the caller cannot share the contents of communication leading to confusion
Solution Approach 1:
The master station serves as an intermediary between the external wireless system and multiple substations. It receives audio signals from the external radio, determines the appropriate destination group based on group setting information, and redistributes the signals to the correct substations. This mediator role enables wide-area communication while maintaining proper information distribution to relevant users.
Solution Approach 2:
The system segments substations into multiple groups with different group setting information. By dividing the substation network into organized groups, the master station can selectively transmit audio signals to specific groups, ensuring that communication content is shared with the appropriate users while maintaining system-wide connectivity for extended range communication.
2Reliability
If audio signals are transmitted one-to-one between caller and wireless terminal, then communication clarity is improved, but other substation users cannot share the communication contents
Solution Approach 1:
The system dynamically adjusts signal distribution based on group affiliation. The master station determines which groups should receive the audio signal by checking group setting information, and selectively transmits to substations in those groups. This dynamic approach maintains clear one-to-one communication while enabling appropriate many-to-many sharing based on organizational relationships.
Data Source
AI summary
A master station of an intercom system is connected to an internal radio. When a substation communicates with an external radio of another wireless system, the master station outputs an audio signal received from the substation to the internal radio, and the internal radio transmits the audio signal to the external radio. The master station stores group setting information of a plurality of substations and destination group setting information indicating to which group of the plurality of substations the audio signal is to be transmitted. With reference to the group setting information and destination group setting information, the master station transmits the audio signal received from the substation to the substations in the group indicated by the destination group setting information.