In order to make sensor node acquire parallel data and store different out-bursting signals

a design scheme based on SPI bus is put forward.The scheme is that the control module manages nodes

function module accomplishes test work

wireless module is responsible for receiving data which is changed through SPI bus among all kinds of modules.In the process of test

every function module puts test data into memory

and the data is sent back to the basement by packet switching after test.The practice proves that the node works stably

is convenient to develop its function and able to achieve test work.