Detection method for sensitivity to fire by smoke detector

A technology of smoke detectors and detection methods, applied in instruments, alarms, etc., can solve problems such as reducing product development efficiency and inconvenient fire sensitivity testing.

Active Publication Date: 2016-09-14
深圳市高新投三江电子股份有限公司
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Problems solved by technology

[0003] The invention provides a method for detecting fire sensitivity of smoke detectors, aiming at solving the problems

Method used

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  • Detection method for sensitivity to fire by smoke detector
  • Detection method for sensitivity to fire by smoke detector
  • Detection method for sensitivity to fire by smoke detector

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Embodiment Construction

[0027] The present application will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

[0028] According to the national standard GB4715-2005, the test fire SH1- wood pyrolysis smoldering fire;

[0029] The standard requires the following equipment manufacturing requirements:

[0030] Fuel: 10 beech sticks of 75mm×25mm×20mm (water content equal to about 5%).

[0031] Arrangement: wooden sticks are placed radially on top of a heating plate with a heating power of 2kW (rated power) and a diameter of 220mm. There are 8 concentric grooves on the surface of the heating plate, the width of the grooves is 5mm, the depth is 2mm, the distance between the grooves is 3mm, and the distance between the grooves and the edge of the heating plate is 4mm. At the beginning of the test, power on the heating plate first, and the temperature of the heating plate should rise to 600°C within 11 minutes and be maintained stably. In the...

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Abstract

The invention relates to a detection method for sensitivity to a fire by a smoke detector. The detection method comprises: a fire laboratory is constructed in advance, wherein at least a plurality of to-be-detected sample machines of smoke detectors, a smoke generating unit for make smoke, and a plurality of smoke detectors for monitoring smoke concentrations are arranged in the fire laboratory and a processor in communication connection with the to-be-detected sample machines and the smoke detectors is also arranged; the smoke generating unit is started and is controlled to make smoke with the concentration reaching a calibration value within a predetermined time range; the processor monitors whether the to-be-detected sample machines carry out alarming in real time and records time of sending alarming signals by the corresponding to-be-detected sample machines; and after the smoke concentration in the fire laboratory reaches the calibration value, the processor stops monitoring on the to-be-detected sample machines. According to the invention, response time of the detectors in fire sensitivity testing can be measured visually and relative proportions of differences of response time of the sample machines with different structures can be estimated. Therefore, the using frequency of the fire sensitivity test can be improved substantially and the working efficiency of research and development testing can be enhanced.

Description

technical field [0001] The present application relates to the field of fire protection, in particular to a method for detecting fire sensitivity of a smoke detector. Background technique [0002] The fire alarm system is a product that belongs to the national 3C compulsory certification, and related products must pass the certification. The independent photoelectric smoke fire detection alarm is one of the fire protection products and must pass the 3C compulsory certification. As far as the independent photoelectric smoke detection alarm is concerned, the standard implemented in China is GB20517-2006; the standard implemented in Europe is EN14604. The implementation standard includes the test of the fire sensitivity of the smoke detector, and the test environment has relatively strict requirements. In order to make the product meet the relevant standards, a large number of tests on the fire sensitivity of the product are often carried out in the initial stage of smoke detec...

Claims

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Application Information

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IPC IPC(8): G08B29/14
CPCG08B29/145
Inventor 徐军钢胡元智陈建文
Owner 深圳市高新投三江电子股份有限公司
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