A Linear Beam Smoke Detector That Can Simulate Real Scene Detection

Abstract

The invention relates to a linear optical beam smoke detector capable of real-scene simulation detection, comprising a base, a detection head, a test channel and a PLC controller, the detection head and the test channel are connected and arranged on the same side of the base, the detection The head is facing the test channel; the test channel is correspondingly provided with an upper connection seat and a lower connection seat; the lower connection seat is provided with a steam chamber and a steam nozzle, the steam chamber is provided with a heating liner, and the steam nozzle communicates with the test channel It is connected with the steam chamber and is equipped with an opening and closing assembly; the upper connecting seat is provided with an absorption chamber and an exhaust solenoid valve. The exhaust solenoid valve is connected to the test cavity and is provided with a flow guide. The air pipe and exhaust hole of the valve; the two sides of the test channel are also provided with visibility detectors; the various components of the PLC controller signal; realize the shading change of the test channel, determine the specific critical value and sensitivity of the detector, Improved the accuracy of detector alerts.

Description

technical field [0001] The invention belongs to the technical field of fire detection, and in particular relates to a linear light beam smoke detector capable of real-scene simulation detection. Background technique [0002] Linear beam smoke detectors are generally used in large space buildings with large spans and high internal spaces. The linear optical beam smoke detector consists of a transmitter and a receiver. The transmitter and the receiver are respectively installed at opposite ends of the protected space and on the same horizontal line. Its working principle is to use infrared rays to form a detection source, and then use smoke to reduce Fire is judged by the amount of beam light emitted by the infrared transmitter to the infrared receiver. Existing detection methods of detectors are usually carried out by covering filters with different shading rates, but the filtering degree is discontinuous due to the switching of filters, and the specific critical value canno...

AI Technical Summary

Problems solved by technology

Existing detection methods of detectors are usually carried out by covering filters with different shading rates, but the filtering degree is discontinuous due to the switching of filters, and the specific critical value cannot be determined; The situation does not match, it is difficult to judge the sensitivity of the detector to smoke

Images