Carrier reading system

The invention relates to a carrier reading system comprising a single-chip computer, a carrier chip, a carrier transmitting and receiving circuit, and a power source module. The single-chip computer is connected to the carrier chip through an SPI interface. The carrier chip is connected to the carrier transmitting and receiving circuit. The carrier transmitting and receiving circuit is connected to a concentrator though a power line. The power source module is respectively connected to the single-chip computer and the carrier chip. Compared to existing technologies, the system provided by the invention has advantages of low in cost, stable and reliable.