Abstract: Alarm verification is a new test item. Verification regulations and methods and means are necessary to be improved and perfected. At present, the works of the ventilation and reading during the detection are completed manually. Not only does it need a large number of repetitive works, and is time-consuming and laborious, but also is difficult to guarantee the accuracy and reliability of results. If you will test the stability of the instrument, then more time will be needed. So it is necessary to establish an automated detection device to accomplish the verification and calibration of the gas detector in accordance with the requirements of verification procedures. To meet these needs, a digital detection system with the alarming functional for toxic and harmful gas was designed. The system included three parts of multi-channel gas collection hardware system, mixed gas concentration identification system and detection and control system. By using the measuring technology, electronic technology and computer technology, detection efficiency, reliability and accuracy of test are all improved, and human error is also reduced. The verification regulation is further promoted through the improved detection means.

Key words: Alarm , Measurement and testing , Detection system

摘要： 　    报警器检定属于新兴的检定项目。从检定规程到检定方法以及检定手段都有必要提高和完善。目前，检测中的通气、换气、读数等都是由人工来完成，不仅需要大量的重复性劳动，费时费力，而且难以保证检测结果的准确可靠。因此有必要建立一套自动化检测装置，按照计量检定规程的要求，来自动完成对气体检测仪的检定或校准。为满足上述需要，设计研制了有毒有害气体报警器数字检测系统，该系统包括多通道气体采集硬件系统、混合气体浓度数字识别系统和检测控制系统三部分。通过测量技术、电子技术和计算机技术的综合运用，可以提高检测的工作效率，提高检定工作的可靠性和准确性，降低人为误差。通过检测手段的改进，达到促进检定规程的进一步完善。

关键词: 报警器 , 　计量测试 , 　检测系统