The Design Of Wireless Distributed Memory Test System

With the development of modern science and technology, people are increasingly demanding the measurement technology. The system is not only to test the signal, but also responsible for real-time monitoring of the environment. The method of the traditional dot matrix's measurement has been difficult to meet current testing requirements. Therefore, the wireless distributed memory test system based on self-positioning come into being, and has become a new effective signal test method.This article describes the principle of signal test, the distributed test system's features technology and classification. On this basis, a wireless distributed memory test system for space-time signals measuring, which consists of the data control center and field test subsystem , has been designed. Firstly, the composition and feature technology of the system are briefly introduced; Secondly, the system control software and master station's control unit hardware and software in the data control center has been designed. The design of the node's modular and low power consumption has been described, and the design of a new serial bus between the modules has been highlighted, including the design of the host bus control interface, the slave bus control interface and the impedance matching between the interfaces; Finally, some key modules of the node in system involved in the wireless communication module, the decoding control module, locator beacon signal transmitter module, power module and the time synchronization module have been designed.The experiment shows that the system has high reliability and stability, and the analysis of experimental data shows that the node positioning accuracy is up to 50cm, the collected signal quality is higher. These can meet fully the system requirements. It has a higher promotional value.