Patent ID: 11933719
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Measurement (Instruments)
Classification: CPC G  H  B | IPC B  G  H

Claim 16:
17. An automatic material transport system, comprising: a plurality of material transport vehicles and a posture adjustment device for an optical sensor, the posture adjustment device comprising: a controller, a posture detector, and a posture adjustment structure; an optical sensor to be detected being fixed on the posture adjustment structure; the posture detector being configured to receive an emitted beam of the optical sensor to be detected, detect a posture of the optical sensor to be detected according to the emitted beam, and send posture information to the controller; and the controller being configured to control, according to the posture information, the posture adjustment structure to adjust the posture of the optical sensor to be detected;
wherein each material transport vehicle comprises a vehicle body and an optical sensor fixed on the vehicle body through the posture adjustment device,
wherein the posture adjustment device comprises: a power supply device configured to provide a power supply for the posture adjustment structure under a control of the controller, wherein the posture adjustment structure comprises: a movable bracket, a fixed bracket and a plurality of piezoelectric adjusting bolts; the optical sensor to be detected is fixed on the fixed bracket, and the movable bracket is connected with the fixed bracket through the piezoelectric adjusting bolts;
the controller is configured to control, according to the posture information, the power supply device to provide a power supply for each piezoelectric adjusting bolt, and adjust a length of the piezoelectric adjusting bolt to adjust the posture of the optical sensor to be detected, wherein each of the piezoelectric adjusting bolts comprises a fixed screw rod, a movable screw rod and a driving rod; an end of the driving rod is connected with the movable screw rod, and another end of the driving rod is movably arranged in the fixed screw rod;
a first clamping arm, a second clamping arm, a first piezoelectric stack, a second piezoelectric stack and a third piezoelectric stack are provided in the fixed screw rod; the first piezoelectric stack, the third piezoelectric stack and the second piezoelectric stack are arranged in sequence, and the second piezoelectric stack is located at a side, close to the movable screw rod, of the third piezoelectric stack;
the first piezoelectric stack controls the first clamping arm to clamp the driving rod when not receiving the power supply, and controls the first clamping arm to release the driving rod when receiving the power supply, so that the driving rod drives the movable screw rod to shift or remains static;
the second piezoelectric stack controls the second clamping arm to clamp the driving rod when not receiving the power supply, and controls the second clamping arm to release the driving rod when receiving the power supply, so that the driving rod drives the movable screw rod to shift or remains static;
the third piezoelectric stack controls at least one of the first piezoelectric stack and the second piezoelectric stack to shift when receiving the power supply, so that the driving rod drives the movable screw rod to shift or remains static.