Fire detection test instrument

A fire detection tester and fire detection technology, which is applied to instruments, measuring devices, scientific instruments, etc., can solve problems such as inconvenient operation, inaccurate detection results, and complicated detection procedures, and achieve the effect of outputting signals that are true and reliable.

Active Publication Date: 2007-06-27
西斐(上海)工业控制有限公司
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Problems solved by technology

Since the fluorescent lamp that simulates the flame light source is a power frequency visible light, which is quite different from the boiler flame in the frequency and the wavelength of the detected light, the detection result is not accurate enough.
Since the detection proce...

Method used

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing, and particularly recommend following embodiment:

[0020] As shown in Figure 1, the fire detection instrument of the present invention comprises: computer 5, the simulated flame infrared light source 2 that is connected with computer 5, display 3, probe performance indicator light 4, A / D converter 7, mode switch 12 and analog A voltage signal generating circuit 11, a preprocessing circuit 8 connected to the input end of the A / D converter 7, a control processing system 6 placed in the computer 5, and an intensity gear between the computer 5 and the analog voltage signal generating circuit 11 Switch 13 is placed on the simulated flame infrared light source 2 optical path for placing the flame detection probe bracket 1 to be tested (hereinafter referred to as IDD probe) and the detection circuit 9, and the input terminal of the flame detection amplifier 10 to be tested is connect...

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Abstract

Fire checkout tester includes computer, simulated flame of infrared source (SFIS), display, performance indicator light, A/D conversion module, mode switch, step switch for intensity, signal generation circuit for analog voltage (SGCAV), preprocessing circuit (PC) connected to A/D conversion module, testing circuit, and control process system inside computer. Controlling SFIS and SGCAV, the control process system generates intensity and frequency of signal simulating burning flame in boiler, and processes digital signal output from probe to be fire checked out, processed by PC, and converted by A/D module. The processed result is displayed. Being connected to the output end of the fire checkout amplifier to be fire checked out, the tester gives out tested analog signal and switching value signal. The tester improves testing accuracy. The inaccuracy is caused by unstable reference light as well as individual variation of fire checkout probes and amplifiers.

Description

technical field [0001] The invention relates to a fire detection tester, in particular to a fire detection tester for function detection of a flame detection probe and a flame detection amplifier of an infrared flame detector. Background technique [0002] With the widespread application of flame detectors (IDD), flame detector amplifiers and similar flame detectors in power plant boilers and other occasions, the detection of their related functions has gradually become more important. However, the current detection methods for flame detection probes and flame detection amplifiers are relatively complicated and not accurate and intuitive enough. At present, the detection is mainly carried out in the following way: using visible light sources such as fluorescent lamps as a simulated flame combustion source, assembling the flame detection probe and the flame detection amplifier together, and then judging the relevant flame detector by comparing the parameters of several flame ...

Claims

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Application Information

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IPC IPC(8): G01J1/00G01J1/02G01J1/08G01J1/42
Inventor 郑元勋李强国
Owner 西斐(上海)工业控制有限公司
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