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本文介绍的稀土永磁体内磁动圈笔描式记录器,具有综合性能指标高、结构工艺性能好、生产维修方便、体积小重量轻、可充分利用我国资源特点。经过77年卫生部组织的鉴定,这种记录器被认为具有国际先进水平,并被选为全国医用记录器统一设计的基础。本文详述了这种记录器的磁路设计,偏转系统运动特性的分析,线圈参数与驱动电路的配置、结构工艺特点,以及专用内磁体性能测定等,并列出了记录器的技术条件与实测数据。文中论述侧重于提高这种医用记录器的频响并改善它的线性,这对绝大多数通用笔描记录器的设计也是适用的,但考虑到某些医用或通用记录器希望能有更大的偏转幅度,而对频响的要求不高,本文在论述中也指出了利用这种磁路时,设计其他参数应注意的调整。
This article describes the magnetic permanent magnet permanent magnet pen recorder, with a comprehensive index of high performance, good structural performance, easy production and maintenance, small size and light weight, can take full advantage of the characteristics of our resources. After 77 years of accreditation organized by the Ministry of Health, this recorder is considered to have international advanced level, and was selected as the basis for a unified design of the national medical recorders. This paper details the magnetic circuit design of the recorder, the analysis of the movement characteristics of the deflection system, the configuration of the coil parameters and the driving circuit, the characteristics of the structure and the determination of the performance of the special inner magnet, and lists the technical conditions of the recorder actual data. The paper focuses on increasing the frequency response of this medical recorder and improving its linearity, which is also applicable to the design of most general purpose pen recorders, but considering that some medical or general purpose recorders may wish to have greater Of the deflection amplitude, and the requirements of the frequency response is not high, this paper also pointed out in the discussion of the use of such a magnetic circuit, the design of other parameters should pay attention to the adjustment.