空气负离子浓度可通过空气负离子浓度检测仪测得。检测仪通过将空气中负离子的电荷量转化为电流，再将电流转化为空气负离子浓度的方式测得负离子浓度。现有便携式空气负离子浓度检测仪测量范围小、精度不高。鉴于此，本文设计一种新型便携式空气负离子浓度检测仪，其检测通道设计为“L”形，负离子接收结构设计为细杆状。“L”形设计便于安装固定抽风风扇和检测探头，实际操作方便；接收结构设计为细杆状，可通入的空气流量更大，检测数据更准确。本文设计的空气负离子浓度检测仪在高、低浓度的负离子环境下都可以使用，测量范围广，可达0~2亿ions/cm3，精度高，并可实时检测。
The
air anion concentration can be measured by an air anion concentration detector.
The detector measures the concentration of negative ions by converting the
amount of charge of negative ions in the air into current, and then converting
the current into the concentration of negative ions in the air. The existing
portable air negative ion concentration detector has a small measuring range
and low accuracy. In view of this, this paper designs a new type of portable
air anion concentration detector. The detection channel is designed in an “L”
shape, and the anion receiving structure is designed in a thin rod shape. The “L”
shape design is convenient to install a fixed exhaust fan, and the actual
operation is convenient; the receiving structure is designed in a thin rod
shape, the air flow can be larger, and the detection data is more accurate. The
air anion concentration detector designed in this paper can be used in both
high and low concentration anion environments, with a wide measurement range,
up to 0~200 million ions/cm3, high accuracy, and real-time
detection.
