A SpaceWire bus free topology bit error rate test system and method

The invention discloses a SpaceWire bus free topology bit error rate test system and method. The method is realized based on a SpaceWire error rate testing device. Working modes of different controllers, router connection mode, the data transmission types are freely combined under various complex conditions; the error rate of the SpaceWire component is judged by measuring the error code conditionsof the data code bits of the input end and the output end of different controllers, the problem that errors such as data damage, data loss and data denaturation easily occur in the transmission process due to lack of judgment of the error rate in the prior art is solved, and the method has the advantages of being high in confidence degree and short in test time. 一种SpaceWire总线自由拓扑误码率测试系统及方法，基于SpaceWire误码率测试装置实现，通过在不同控制器工作模式、路由器连接模式、数据传输种类自由组合的多种复杂情况下，通过测定不同控制器的输入、输出端数据码位的误码情况来判定SpaceWire元器件的误码率，解决了现有技术缺少判定误码率容易导致传输过程出现数据损坏、丢失、变性等错误的问题，具有置信度高，测试时间短的特点。