Special automatic IC card and IC chip switching circuit for Beidou terminal equipment

The utility model discloses a special automatic IC card and IC chip switching circuit for Beidou terminal equipment. The circuit comprises an IC card unit, an IC chip unit, a first switch unit, a second switch unit, a weak current detection unit, a current and voltage conversion unit, a signal amplification unit, a voltage comparison unit and a controller unit, wherein the weak current detection unit detects current signals output by the IC card unit and the IC chip unit, the output end of the weak current detection unit is connected with the input end of the current and voltage conversion unit, the output end of the current and voltage conversion unit is connected with the input end of the signal amplification unit, the output end of the signal amplification unit is connected with the controller unit, the output end of the IC card unit is connected with the input end of the first switch unit, the output end of the IC chip unit is connected with the input end of the second switch unit, and the controller unit is connected with the control ends of the first switch unit and the second switch unit. The circuit can automatically switch IC card and chip.