ABNORMALITY DETECTING SYSTEM FOR AUTOMATED GUIDED VEHICLE

• US 20150175028A1
• Filed: 07/31/2013
• Published: 06/25/2015
• Est. Priority Date: 08/02/2012
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Hirayama, Mitsuru, Fukui, Toshihito
• Granted Patent: US 9,346,370 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B61B 13/00 Other railway systems
• CPC Class Codes: G05B 23/0224 Process history based detection method, e.g. whereby history implies the availability of large amounts of data
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A system for detecting an abnormality of an automated guided vehicle that travels on a circulation route includes: a history recording unit for recording a change history of a current of a battery of the automated guided vehicle with respect to each circulation; and an abnormality determining unit for determining presence or absence of an abnormality of the automated guided vehicle on the basis of the change history of the current of the battery recorded for each circulation.

Claims

1. An abnormality detecting system for an automated guided vehicle, the system detecting an abnormality of the automated guided vehicle that travels on a circulation route, the abnormality detecting system comprising:

a history recording unit for recording a change history of a current of a battery of the automated guided vehicle with respect to each circulation; and

an abnormality determining unit for determining presence or absence of an abnormality of the automated guided vehicle on the basis of the change history of the current of the battery recorded for each circulation.

2. The abnormality detecting system for an automated guided vehicle according to claim 1,

wherein the abnormality determining unit determines presence or absence of an abnormality of the automated guided vehicle by comparing the change history in a circulation this time of the automated guided vehicle with the change history in a circulation previous time.

3. The abnormality detecting system for an automated guided vehicle according to claim 1,

wherein the abnormality determining unit determines presence or absence of an abnormality of the automated guided vehicle by comparing the change history in a circulation this time of the automated guided vehicle with an average change history of the circulations until the previous time.

4. The abnormality detecting system for an automated guided vehicle according to claim 1,

wherein there are multiple automated guided vehicles, and

wherein the abnormality determining unit determines presence or absence of an abnormality of the automated guided vehicle that circulates this time by comparing the change history of the automated guided vehicle that circulates this time with a change history of another automated guided vehicle.

5. The abnormality detecting system for an automated guided vehicle according to claim 1,

wherein there are multiple automated guided vehicles, and

wherein the abnormality determining unit determines presence or absence of an abnormality of the automated guided vehicle that circulates this time by comparing the change history of the automated guided vehicle that circulates this time with an average change history of other group of automated guided vehicles.

6. The abnormality detecting system for an automated guided vehicle according to claim 1,

wherein the change history of the current of the battery is a history of a change in a current integrated quantity in a traveling interval of each circulation of the automated guided vehicle.