Signal detection board card and main board for signal detection

The invention provides a signal detection board card which comprises a field programmable gate array (FPGA), a real-time clock (RTC) module and a storage card. The FPGA is used for obtaining first information of a mainboard through an I2C bus, wherein the first information comprises identification information of the mainboard, identification information of a signal to be detected and pin information corresponding to the signal to be detected, the FPGA is further used for detecting the signal to be detected; the RTC module is used for providing current time information for the FPGA, the storagecard is used for storing the signal to be detected according to the first information and the collection time when the signal to be detected is detected. Accordingly, due to the signal detection board card, the signal to be detected of the mainboard can be detected, related information of the mainboard of the signal to be detected is correspondingly stored, the fault detection flexibility is improved, and the cost is low