载荷管理器通用地检测试板卡的系统设计

System Design of a Common Circuit Board of Ground Test Instrument for Payload Data Handling System

地面检测设备用于对载荷管理器的功能和性能进行检测,是载荷管理器研发中的重要保障设备。由于不同型号任务中载荷硬件接口和软件协议差异较大,载荷管理器地检的通用性一直是地检设备的设计难点。提出了一种面向星上设备,尤其是载荷管理器的基于配置文件的通用地面检测设备测试板卡设计。针对不同任务中载荷管理器电接口的物理层约定、通信机制和遥测遥控不同的难题,采用软件配置和硬件可重构的方法实现板卡硬件的通用设计。针对不同任务的科学数据和总线协议数据格式不同的难题,采用基于序列解析的数据包生成方法和超时接收方法实现软件协议、数据格式可配置。通过测试验证了所提出的通用地检测试板卡设计的可行性和通用性。

Ground Test Instrument(hereinafter referred to as GTI)tests the function and performance of a payload data handling system,and is an important support equipment in the design of a satellite’s payload data handling system(hereinafter referred to as PHDS).Due to the great differences in the payloads’hardware interfaces and software protocols among different satellites,versatility has always been a problem for the design of a ground test instrument for PHDS.A common GTI circuit board design based on configuration files is proposed for on-board products,especially PHDS.To solve the problem of the difference in physical layer interfaces,communication mechanisms among different PHDS’s electrical interfaces of different tasks,methods of software configuration and hardware reconfiguration are adopted in the hardware design of common test board.In view of the difference in the formats of scientific data and data bus protocol in different tasks,the GTI’s software protocol and data format can be configurable by using the packet generation method based on sequence parsing and timeout reception method.Finally,the feasibility and versatility of the design of the common test board proposed in this paper are verified through the test.