Investigation of Improved Sensor/Actuator Concepts for Residential Fire Sprinkler Systems

摘要

An information search of potential techniques to sense residential fires and activate water sprinklers was made. Several novel approaches to increasing sprinkler sensitivity, reducing spurious action, and reducing cost were selected for laboratory development. Transistor and thermal resistor based electronic fire sensors were built to actuate a solenoid and pyrotechnic valves. A temperature-sensitive, shape-recovery, nickel titanium alloy was used to build a simple, modified, conventional link sprinkler and a sprinkler that automatically turns off after use. Controlled temperature, temperature response, water flow, and hydrostatic leakage testers were built. The hardware was tested and recommendations were made for the development of future systems.