A control system and method for a large-space full-scale fire scene simulation experiment

Abstract

The present invention relates to a large-space full-scale fire site simulation experiment control system and its method. Data acquisition and processing system, altitude marking and image acquisition system, mobile power supply and control host; the mobile power supply and simulated fire source and convection smoke system, temperature data acquisition and processing system, wind speed data acquisition and processing system, altitude marking and image acquisition system It is connected with each other and supplies power to the above systems; the control host has built-in data acquisition sub-module, data storage sub-module and UI display sub-module to realize on-site data processing and control functions. The invention adopts 1‑WIRE bus mode to network the sensors, which has the characteristics of simple and convenient wiring and flexible disassembly, and its transmission data is stable. At the same time, it adopts the flue gas generating device with double-sided air intake to avoid single-sided air intake to heat Smoke has interference problems.

Description

technical field [0001] The invention belongs to the technical field of fire detection and control, in particular to a large-space full-scale fire scene simulation experiment control system and a method thereof. Background technique [0002] With the rapid development of urbanization, a number of large-space buildings such as conference centers, atriums, and underground projects have been newly built in urban buildings. These buildings are often crowded places or places where people are difficult to evacuate. Therefore, safety issues such as fire and smoke emission in large-space buildings are becoming more and more important. Before the above-mentioned large-space buildings are put into operation, it is necessary to carry out safety experiments such as fire and smoke. [0003] Traditional experimental methods usually use cold smoke test technology and scaled-down simulation technology, which have at least the following disadvantages: large-scale full-scale experimental test...

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Problems solved by technology

[0003] Traditional experimental methods usually use cold smoke test technology and scaled-scale simulation technology, which have at least the following disadvantages: large-scale full-scale experimental tests cannot be carried out, and the indicators reflected are not consistent with real fires.

However, the full-scale fire scene simulation experiment has objective requirements such as changeable test sites, incomplete power supply of the experimental site circuit system, complex electromagnetic interference factors on site, and real-time comparison of observation records for specific location data. Therefore, the existing fire site The main problems in the simulation experiment control system are: (1) There are thermocouples or thermal resistances used as the temperature acquisition module, which makes the wiring complicated and inconvenient to disassemble and convert the test site, or the sensor adopts single-bus transmission mode, the wiring is simple, but the primary loop There are more than 16 connected temperature measurement points, which leads to the instability of the temperature measurement system; (2) there is a problem that the temperature measurement line series measurement points are fixed and cannot be expanded; way, the tracer flue gas produced has initial kinetic energy, which has the problem of interfering with hot flue gas

(4) The problem of inconvenient display and control of the control host: it only has simple data collection and recording and drawing functions, and the on-site drawings cannot be imported according to the different test sites to quickly generate a map of the layout of experimental measuring points; The problem of real-time display of data in the interface; the incompatibility of the temperature data acquisition module and the wind speed data acquisition module leads to the problem that the real-time display cannot be displayed on the same interface; the placement of sensors for measuring temperature and wind speed is random and redundant, and there is no scientific and simple measuring point problem with layout

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