Automated guided vehicle and control method for automated guided system including the same
AssigneeSamsung Display Co., Ltd.
InventorsYonggu Kim, Sanghoon Ji
Life of this patent
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Abstract
Provided is a control method for an automated guided system including a step of providing an automated guided vehicle including a sensor and a watchdog timer, a controller, and an alarm, an initializing step of initializing a count value, a first checking step of checking an abnormal state of the sensor, a count increasing step of increasing the count value, and a step of performing a recovery operation, the step of performing the recovery operation includes a second checking step of rechecking the abnormal state, a step of turning on the alarm; a third checking step of rechecking the abnormal state, and a step of turning off the alarm.
Claims20
A control method for an automated guided system comprising:
- a step of providing an automated guided vehicle comprising a sensor and a watchdog timer that detects a user, a controller that receives a signal from the sensor, and an alarm that provides an alarm to the user;
- an initializing step of receiving, by the controller, the signal and initializing, by the watchdog timer, a count value;
- a first checking step of checking, by the controller, an abnormal state of the sensor;
- a count increasing step of increasing, by the watchdog timer, the count value in case that it is determined that the sensor is in the abnormal state;
- and
- a step of performing, by the controller, a recovery operation in case that the count value is equal to or greater than a selectable value,
- wherein the step of performing the recovery operation comprises:
- a second checking step of rechecking, by the controller, the abnormal state of the sensor;
- a step of turning on, by the controller, the alarm in case that it is determined that the sensor is in the abnormal state;
- a third checking step of rechecking, by the controller, the abnormal state of the sensor;
- and
- a step of turning off, by the controller, the alarm in case that it is determined that the sensor is in a normal state changed from the abnormal state.
An automated guided vehicle comprising:
- a controller that receives a signal from an external sensor, a watchdog timer, and an alarm, wherein
- the controller determines whether the sensor is in a normal state or an abnormal state, and selects a speed of the automated guided vehicle between a first speed or a second speed slower than the first speed,
- the watchdog timer initializes a count value in case that the sensor is in the normal state, and increases the count value in case that the sensor is in the abnormal state, and
- the controller rechecks the abnormal state of the sensor in case that the count value is equal to or greater than a selectable value, turns on the alarm in case that it is determined that the sensor is in the abnormal state, rechecks the abnormal state of the sensor after the alarm is turned on, turns off the alarm in case that it is determined that the sensor is in the normal state changed from the abnormal state, and selects the second speed in case that it is determined that the sensor is in the abnormal state.
Dependencies are inferred from the claim text.