Intelligent bus parallel connection thermal sensitive element type linetype temperature-sensing fire disaster detector

Abstract

The invention comprises a main switch box, multi data / power buses, multi intelligent encoded temperature sensors and multi line type temperature sensing unit. The provided intelligent bus is parallel-connected to the thermosensitive line type temperature fire sensor; each intelligent encoded temperature sensor is connected to a line type temperature senor so as to reduce the distribution density of the intelligent encoded temperature sensor. The invention can sense the fire in small size.

Description

technical field [0001] The invention relates to a fire-fighting equipment, in particular to an intelligent bus parallel-connected heat-sensitive element-type linear temperature-sensitive fire detector. Background technique [0002] The linear heat-sensitive fire detector is a kind of detector which is widely used. figure 1 It is a structural schematic diagram of an ordinary linear temperature-sensitive fire detector in the prior art. Such as figure 1 As shown, this common linear temperature-sensitive fire detector in the prior art is usually composed of three parts: a linear temperature sensing element 4, a conversion box 5 and a terminal box 6, thus forming a detection circuit; the terminal box 6 can sometimes be omitted , the circuit in the terminal box 6 can also be set in the conversion box 5 through the return signal line arranged in parallel with the linear temperature sensing element, and the function of the terminal box 6 is completed by the conversion box 5 at thi...

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Problems solved by technology

But, there is following problem in this common linear temperature-sensing fire detector of prior art: when the linear temperature sensing element on this fire detector adopts continuous distribution NTC parallel connection type, if the ambient temperature is too high, just be easy to produce error. Alarm, and the longer the length of the linear temperature sensing element in a single circuit, the easier it is to generate false alarms

Although this type of linear temperature-sensitive fire detector with parallel connection of thermal elements on the intelligent bus can solve the problem of false alarm fire alarms of ordinary linear temperature-sensitive fire detectors under the condition of maximum service length, it has the following problems: if the miniature intelligent coding sensor If the distribution of temperature modules 9 is too dense, the production cost will be increased, and the inspection cycle of the conversion box 7 is too long, so the consistency of the alarm response time (and the difference between the alarm response time of each detection section) cannot be guaranteed. ); and if the distribution of the miniature intelligent coding temperature sensing module 9 is too rare, the conversion box 7 will be to the small-sized fire source (for example, the diameter of the fire source is less than 10CM or ignited with a lighter) between two miniature intelligent coding temperature sensing modules 9 etc.) unable to respond quickly

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