通用信号动态测试系统设计与实现

Design and Implementation of Universal Signal Dynamic Test System

为满足某型号地面试验的测试需求与未来发展趋势,解决以往采集过程繁琐、实时性差、扩展性差等问题,提出了一种通用信号动态测试系统;在给出系统体系结构的基础上,阐述了系统的软硬件组成、软件设计及系统所实现的功能;系统基于1394通讯协议,编写相应驱动来完成多套系统的通信,并通过总线将数据传输至控制器上,根据线性或者非线性处理算法,计算并显示实际值;应用结果表明,该系统运行稳定可靠,实现了多路输出标准信号的各类传感器及温度传感器数据的同步采集和存储,采样率可自由设置,并采取了相应的抗干扰措施,支持传感器热插拔,具有通道供电隔离、可靠性高等特点,大大提高了信号测试系统的能力,并取得了较好的应用效果。

In order to meet the test requirements and future development trend of a certain type of ground test,solve the problems of tedious collection process,poor real-time performance and poor expansibility in the past,a universal signal dynamic test system is proposed.Based on the proposed system framework,the software and hardware components,the software design and the functions of the system are described.The system is based on the 1394 communication protocol,and the corresponding drivers are written to complete the communication of multiple systems.The data is transmitted to the controller through the bus,and the actual value is calculated and displayed according to the linear or nonlinear processing algorithm.The application results show that the system is stable and reliable,and realizes the synchronous acquisition and storage of various sensor and temperature sensor data of multi-channel output standard signals.The sampling rate can be set freely,and the corresponding anti-interference measures are taken.The system has the characteristics of supporting sensor hot-plug,channel power supply isolation and the high reliability,which greatly improves the capability of the signal testing system.Finally,the system has achieved good application effect.