AT518473A1 - Automatic optoelectronic test method for fire dampers and actuators of preventive fire protection - Google Patents

Abstract

The control and monitoring of the fire dampers and the actuators of the preventive fire protection is to facilitate the control during maintenance and testing of fire dampers and the remaining actuators of preventive fire protection. With this device can cause significant cost savings, as often a disassembly and assembly of manhole parts is spared. A camera (1) is installed in the shaft and records the movements and positions of the fire dampers / actuators. A light source (2), is directed to the fire dampers / actuators to allow the detection of fire dampers / actuators in the dark shafts for the camera. The image processing system (3) detects the fire dampers / actuators (light zones, version (C)) and the shadows of these (dark zones, design (C)), and can calculate the angles of attack of the fire dampers / actuators. In addition, a trend can be determined by the camera system to determine whether the flaps adjust to the target values worse over time. Furthermore, the camera can also be used to e.g. Based on the gray value of the smoke, to recognize which components are present in the smoke or how quickly the smoke increases. The image of the camera may be transmitted by a wired data link or by wireless data connection to mobile devices, e.g. be transferred to smartphones.

Description

The invention relates to the control and monitoring of fire dampers and actuators of preventive fire protection, which greatly facilitates the checking and controlling these flaps / actuators.

State of the art

Cameras and image processing systems

Cameras for image data acquisition and image processing systems for the automatic evaluation of these image data for the detection and position detection of workpieces and the like. are state of the art

Fire dampers and actuators of preventive fire protection

Fire dampers and other propulsive fire protection actuators, such as smoke control dampers, outflow openings, fire doors, louvers, backflow ports and the like, are used in building complexes for the safe separation of fire protection areas to prevent the spread of flame front and flue gas carryover. Furthermore, they are used to assist evacuation and extinguishing in a fire compartment.

task

Fire dampers and actuators of preventive fire protection must be tested for function at least once a year. However, many of these actuators are in places where the test is very difficult to perform because the actuators are not accessible. Sometimes manholes or parts of buildings must also be removed temporarily to allow testing. This often leads to the neglect of a test, or to increased disassembly and assembly costs. The functioning of these actuators is currently being checked manually by maintenance personnel (by direct observation of the function on site). A distinction is made between a functional test and a visual assessment. During the functional check, the corresponding actuator is actuated manually and the closing / opening of the actuator is checked via the feedback of the limit switches and the correct forwarding to the building management system documented. During the visual inspection, the condition of the flap or the actuator is assessed externally by the on-site maintenance personnel, and the damper blade inside the ventilation duct or smoke extraction duct is also assessed for contamination, corrosion, etc.

description

The invention consists of the following components (1) camera with lens (2) lighting unit (3) image processing system and control (4) motor

Operation (A) Movement of fire dampers (B) Lighting of fire dampers (C) Recording and evaluation with the camera

execution

The invention for controlling and monitoring the fire dampers and the actuators of preventive fire protection to simplify the control of this. (A) A motor is connected to the shafts of the fire dampers or the actuator and turns the fire dampers or the actuator open or closed if necessary. (B) An illuminant is aligned with the fire dampers or the actuator to illuminate them in the duct and to create shadows which are important for the calculation of the opening angle for the control. (C) The camera captures the recorded images and the controller calculates the opening angle from the dark areas.

The invention will be described graphically with the following illustrations

Fig.l: Scheme + camera image closed Fig.2: Scheme + camera image open

Claims (6)

wired data connection or by a wireless data connection to mobile devices, e.g. be transferred to smartphones. claims 1. The invention for controlling and monitoring the fire dampers and the actuators of preventive fire protection (such as smoke control dampers, outflow openings, fire doors, jalousie flaps, Nachströmöffnungen and the like) überereine camera and image processing system, characterized in that, a camera with image processing system, the angle of the fire dampers / Actors detected and recorded. 2. A control and monitoring of the fire dampers / actuators, as described in claim 1, is characterized in that a lighting illuminates the fire dampers / actuators to make them more visible to the camera and to create shadows. 3. A control and monitoring of fire dampers / actuators, as described in claim 2, is characterized in that a controller calculates the angle of attack of the fire dampers / actuators from the shaded and the exposed areas. 4. Control and monitoring of the fire dampers / actuators, as described in claim 3, is characterized in that the recorded image of the fire damper / the actuator via a wired data connection to a control station or via a radio-data connection to a mobile device, e.g. a smartphone can be transferred. 5. A control and monitoring of the fire dampers / actuators, as described in claim 4, is characterized in that there is a separate control for each fire damper / actuator, with the other if necessary, other values (gray value of smoke, temperature) recorded and recorded can be. 6. A control and monitoring of the fire dampers / actuator, as described in claim 5, is characterized in that the light source is positioned at a location other than the camera to throw targeted shadows to the evaluation of the flap / actuator opening by an image processing system simplify.