Participant Simulation Unit for Fire Alarm Communication Circuit Testing
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Solution Overview
Problem
Existing monitoring and testing devices for alarm systems, particularly fire alarm systems, are unable to automatically and flexibly test the control and communication circuits responsible for activation and signal transmission, especially when different types of detectors are used, leading to insufficient or incorrect error messages and prolonged identification of faults.
Innovation Solution
A test device with a participant simulation unit integrated into the communication circuit of the alarm center, which includes functional units like a voltage supply, microprocessor control, voltage and current measuring units, and an output stage, allowing for the simulation of subscriber loops and testing of functional units without connecting to individual participants, using a subscriber simulation unit that can be designed as a current sink to mimic participant responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing monitoring devices are used to test alarm systems, then the system can operate continuously, but the control and communication circuits cannot be automatically tested, leading to insufficient error detection
Solution Approach 1:
The alarm system's communication circuit performs self-testing by incorporating a participant simulation unit that automatically simulates participant responses and tests the communication circuit's functional units without requiring external testing equipment or manual intervention
Solution Approach 2:
A participant simulation unit is introduced as an intermediary component within the communication circuit to generate simulated participant responses, enabling automatic testing of the communication circuit's functionality without requiring actual participants
2Loss of time
If manual testing methods are used to identify faults in communication circuits, then equipment complexity is minimized, but the time required to identify faults increases significantly
Solution Approach 1:
The participant simulation unit is pre-configured with simulation parameters and integrated into the communication circuit during system setup, enabling immediate automatic fault identification when errors occur without requiring complex external testing equipment or manual procedures
3Adaptability or versatility
If the participant loop is connected to individual participants for testing, then testing accuracy is improved, but the adaptability to different detector types decreases
Solution Approach 1:
The participant simulation unit is designed with configurable simulation parameters that can be adjusted to mimic different participant types and response characteristics, enabling a single device to test communication circuits with various detector types without requiring physical connections to actual participants
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
The invention relates to a participant simulation unit (9, 9a) for testing the functionality of a current measuring unit (8) of a communication circuit (2) of a fire alarm control center (1), wherein the fire alarm control center (1) can be connected to a plurality of participants (12) via a participant loop (11), wherein the communication circuit (2) is designed for communication with the individual participants (12) and for their control: The participant simulation unit (9, 9a) is designed to generate a predetermined current pulse, wherein it is integrated or can be integrated into the communication circuit (2) or can be connected to the communication circuit (2).