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分布式弹上遥测系统是新型的弹上遥测设备,它具有高码速率输出、大容量、速变量数字化及灵活多变的功能。而系统中的远置单元主要用于进行各种参数的采编。本文叙述了用以完成多路速变参数测量的智能远置单元的初步设计与功能的实现方法。这种单元在中心控制单元的控制下按严格的时钟同步来完成连续等间隔采样。这与独立的PCM编码系统不同。文中提出了如何解决与中心单元同步及提高采样率等关键性问题的措施,并在实验板上实现了速变参数的采集、传输以及在中心单元命令字控制下变换不同的工作方式等。
Distributed bombing telemetry system is a new type of bombing telemetry equipment, it has high code rate output, large capacity, variable speed digital and flexible features. The remote unit in the system is mainly used for the editing of various parameters. This paper describes the realization of the preliminary design and function of the intelligent remote unit to accomplish the measurement of multi-path variable parameters. This unit under the control of the central control unit according to strict clock synchronization to achieve continuous equal-interval sampling. This is different from an independent PCM encoding system. In this paper, some measures to solve the key problems such as synchronization with the central unit and increasing the sampling rate are put forward. In addition, the acquisition and transmission of rapid change parameters and the conversion of different working modes under the control of the central unit command word are implemented on the experimental board.