Unmanned calibration system of digital multimeter

The utility model discloses a digital multimeter unmanned calibration system comprising an industrial personal computer, a switch, a multifunctional standard source, a robot control cabinet, a multi-joint robot, a light source controller, a light source assembly, a power supply module, an I/O expansion board card, a button operation panel, a multimeter fixing tool and a workbench. The universal meter fixing tools are arranged on the workbench side by side, the multi-joint robot is located on one side of the universal meter fixing tools, the light source assembly is located above the universal meter fixing tools, and the industrial personal computer is in signal connection with the switch and the I/O expansion board card. The switch is in signal connection with the multifunctional standard source, the robot control cabinet and the CCD camera, the robot control cabinet is in signal connection with the robot body and the clamping jaw, and the I/O expansion board card is in signal connection with the button opera