基于分布式总线的船舶非接触数字式艉轴转速测量装置

Non-contact digital ship stern shaft rotational speed measurement device based on distributed bus

为了解决船舶电动转速表体积大、可靠性较差、振动和空气噪声大,以及全数字电路式艉轴转速测量仪信号长距离传输中容易受到干扰,无法软件补偿显示终端个体误差等问题,将光电传感技术、分布式总线技术、单片机控制技术、数码显示技术应用到船舶艉轴转速测量装置设计开发中。开展了设计要求分析,建立了船舶艉轴转速测量信号采集、传输、显示之间的关系,提出了采用光电测量的方式,利用单片机对信号进行了处理,采用了通过RS485总线传输、分布式显示的测量方法;该装置在各型船舶上进行了大量的系泊和航行试验,并对使用效果进行了评价。研究结果表明,该数字式艉轴转速测量装置具有体积小、实时性好、可靠性高、抗干扰能力强、无振动和空气噪声、扩展性能好等优点,已成功应用于各型船舶,并取得了较好的效果。

In order to solve the problems that the ship electric tachometer has large volume, poor reliability, vibration and air noise and the digital circuit type stern shaft rotational speed measuring instrument signal long distance transmission are vulnerable to interference, not individual error software compensation display terminal, the photoelectric sensing technology, distributed bus technology, microcomputer control technology, digital display technology were applied to the design and development of device for measuring ship stern shaft speed. After the analysis of the design requirements, the relationship was established between the ship stern shaft speed t signal acquisition, transmission, display. The photoelectric measuring method, the signals were processed by a single chip, and through the RS485 bus transmission, distributed display was established. A lot of mooring and navigation experiments in various types of ships were done. The use effect was evaluated. The results show that the device has the advantages of small volume, good real-time performance, high reliability, strong anti-interference ability, no vibration and noise, air expansion performance, it has been successfully applied to all types of ships and the better effect is achieved.