Posture adjustment device and method for optical sensor, and automatic material transport system

Patent metadata

Field	Value
Publication number	US-11933719-B2
Application number	US-202117443731-A
Country	US
Kind code	B2
Filing date	Jul 27, 2021
Priority date	Jun 19, 2020
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

A posture adjustment device for an optical sensor includes: a controller, a posture detector, and a posture adjustment structure. An optical sensor to be detected is fixed on the posture adjustment structure. The posture detector receives an emitted beam of the optical sensor to be detected, detects a posture of the optical sensor to be detected according to the emitted beam, and sends posture information to the controller. The controller controls, according to the posture information, the posture adjustment structure to adjust the posture of the optical sensor to be detected.

First claim

What is claimed is:

1. A posture adjustment device for an optical sensor, comprising: a controller, a posture detector, and a posture adjustment structure; wherein an optical sensor to be detected is fixed on the posture adjustment structure;
the posture detector is 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;

the controller is configured to control, according to the posture information, the posture adjustment structure to adjust the posture of the optical sensor to be detected,
wherein the posture adjustment device further 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.

2. The posture adjustment device of claim 1 , wherein the posture detector comprises a beam receiving area, the beam receiving area being provided with a posture detection scale;
the posture detector is further configured to generate the posture information according to a position of the emitted beam sent by the optical sensor to be detected in the beam receiving area;
the controller is configured to determine, according to the posture information, a posture detection scale value of the emitted beam in the beam receiving area, and the controller is configured to, when the posture detection scale value is not in a preset posture detection scale range, control the posture adjustment structure to adjust the posture of the optical sensor to be detected, or when the posture detection scale value is in the preset posture detection scale range, control the posture adjustment structure to stop adjusting the posture of the optical sensor to be detected.

3. The posture adjustment device of claim 1 , wherein the posture detector comprises a reflector; the posture detector is further configured to take a state of whether the emitted beam sent by the optical sensor to be detected is projected on the reflector of the posture detector as the posture information;
the controller is configured to determine, according to the posture information, that when the emitted beam is not projected on the reflector, the posture of the optical sensor to be detected is not in a preset posture range at present, and then to control the posture adjustment structure to adjust the posture of the optical sensor to be detected, or when the emitted beam is projected on the reflector, the posture of the optical sensor to be detected is in a preset posture range at present, and then to control the posture adjustment structure to stop adjusting the posture of the optical sensor to be detected.

4. The posture adjustment device of claim 1 , wherein the movable bracket comprises a first movable plate, a second movable plate and a third movable plate; the plurality of piezoelectric adjusting bolts comprise a first piezoelectric adjusting bolt, a second piezoelectric adjusting bolt, a third piezoelectric adjusting bolt, a fourth piezoelectric adjusting bolt, a fifth piezoelectric adjusting bolt, a sixth piezoelectric adjusting bolt, a seventh piezoelectric adjusting bolt and an eighth piezoelectric adjusting bolt;
the first movable plate and the second movable plate are located on two opposite sides of the optical sensor to be detected; the first movable plate is connected with the fixed bracket through the first piezoelectric adjusting bolt and the second piezoelectric adjusting bolt; the second movable plate is connected with the fixed bracket through the third piezoelectric adjusting bolt and the fourth piezoelectric adjusting bolt;
the third movable plate is connected with the first movable plate through the fifth piezoelectric adjusting bolt and the sixth piezoelectric adjusting bolt; and the third movable plate is further connected with the second movable plate through the seventh piezoelectric adjusting bolt and the eighth piezoelectric adjusting bolt.

5. The posture adjustment device of claim 4 , wherein each piezoelectric stack comprises a plurality of stacked piezoelectric ceramic plates.

6. The posture adjustment device of claim 1 , further comprising: a gain device;
the gain device is electrically connected between the controller and the posture detector, and the gain device is configured to perform signal amplification on the posture information sent by the posture detector and then transmit it to the controller.

7. A posture adjustment method for an optical sensor, the posture adjustment method being applied to a posture adjustment device for an optical sensor, wherein the posture adjustment method comprises:
receiving, by a posture detector of the posture adjustment device, an emitted beam of an optical sensor to be detected which is fixed on a posture adjustment structure of the posture adjustment device, detecting a posture of the optical sensor to be detected according to the emitted beam, and sending posture information to a controller of the posture adjustment device; and
controlling according to the posture information, by the controller, the posture adjustment structure to adjust the posture of the optical sensor to be detected, wherein the posture adjustment device comprises: a power supply device configured to provide a power supply for 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 config

Assignees

• Changxin Memory Tech Inc

Inventors

• Chen Tianzhu

Classifications

• B60K35/80

  Arrangements for controlling instruments · CPC title

• B60K35/60

  Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10) · CPC title

• B60K35/53

  Movable instruments, e.g. slidable · CPC title

• B60K35/10

  Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor · CPC title

• G01N21/278 Primary

  Constitution of standards · CPC title