English

应用科学学报 ›› 1991, Vol. 9 ›› Issue (1): 55-60.

• 论文 • 上一篇    下一篇

单源双电离室烟雾传感器的研制

毕清华, 谢荣乾   

  1. 上海科学技术大学
  • 收稿日期:1989-05-15 修回日期:1989-07-30 出版日期:1991-03-31 发布日期:1991-03-31

DEVELOPMENT OF SMOKE SENSOR OF SINGLE-SOURCE AND DUAL-IONIZATION CHAMBERS

BI QINGHUA, RONGQIAN   

  1. Shanghai University of Science and Technology
  • Received:1989-05-15 Revised:1989-07-30 Online:1991-03-31 Published:1991-03-31

PDF

114

被引次数

2

摘要： 着重叙述单源双电离室烟雾传感器的原理和特点.检测数据表明,在外加9伏电压作用下,只要烟雾减光率>0.5%/m,就能获得1.5伏以上的输出信号,和CMOS中规模集成电路号放大和控制系统组成高灵敏、小型烟雾探测器.用单源双电离室制成的烟雾探测器,在相对湿度为90~95%环境条件下,经过高、低温(+50~-20℃)下长时间(96小时)考验,伏安特性曲线未发现明显变化;放大和控制系统正常,没有发生误报现象,可以广泛地应用于防火报警和污染检测上.

关键词: 探测器, 烟雾传感器, 电离室, 辐射源

Abstract: This paper expounds the characteristics of the smoke sensor having single-source and dual-ionization chambers. It can be made very small, compact, highly sensitive and efficient for smoke detection. Measured data indicate that under the condition of 9 volts,we can obtain output signals over 1.5 volts as long as the rate of eliminating light is 0.5%/m. The signals are then processed by an amplifier and a control system composed of a CMOS medium-scale integrated circuit. Thus, a highsensitive smoke detector is formed.
The smoke detector, when undergoing high and low temperature (+50~-20) tests for 96 hours under conditions of relative humidity in the 90~95% range, has not shown obvious variations in volt-ampere characteristics. The amplification and control systems are normal, with no misalarm phenomenon. The results demonstrate that the smoke sensor of single-source and dual-ionization chambers can be widely used for the prevention of fire and the detection of smoke contamination.

Key words: detector, smoke senser, ionization chambers, radiation source