Smoke-sensitive fire detector auto-calibrating device

Abstract

The invention discloses a smoke-sensitive fire detector auto-calibrating device, relating to a smoke-sensitive sensor calibrating device, mainly comprising a controller, a smoke box, a wind speed controller, a consistence measuring device, a smoke-adding controller, a smoke stirrer, an observation window, an air duct and a smoke exhaust device, further comprising a detector car. The detector car is arranged in the smoke box and is used for detecting alarm threshold of a detector. The controller and the smoke box are electrically connected, communicate signals and information with the wind speed controller, the consistence measuring device, the smoke-adding controller and the smoke stirrer, and are simultaneously communicated with the detector on the detector car so as to receive a consistence signal of the consistence measuring device and transmitting calibrating information. The invention has the advantages that although the consistency of sensor sensitivities of the detector is different, the consistency of the detectors calibrated by the auto-calibrating device is very high, each detector can pass through the test, the product rework situation is prevented, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a smoke sensor calibration device, in particular to an automatic calibration device for a smoke-type fire detector. Background technique [0002] Existing fire alarm detectors need to test the alarm threshold before leaving the factory. Most manufacturers use a device called a production smoke box for testing. During the test, the detectors are put into the production smoke box one by one. Put two comparison detectors in the smoke box at the same time, one with low alarm sensitivity and one with high alarm sensitivity, then slowly add smoke, when the alarm time of the tested detector is between the alarm times of the two comparison detectors, It is judged as qualified, otherwise it is judged as unqualified. When a failure occurs, it is necessary to readjust the circuit parameters of the unqualified detector and re-test. Generally speaking, the consistency of the detector is not high, and there will be a failure rate of about 5...

AI Technical Summary

Problems solved by technology

When a failure occurs, it is necessary to readjust the circuit parameters of the unqualified detector and re-test. Generally speaking, the consistency of the detector is not high, and there will be a failure rate of about 5%, resulting in relatively large The amount of rework, the production efficiency is not high

Images