Vehicle detection device and article transport system having the same

Abstract

A vehicle detecting device includes a storage section and a diagnosis section. The storage section is configured to store operation information in response to conveyance along a conveyance path and loading / unloading of an article by a vehicle. The diagnosis section is configured to compare the operation information stored in the storage section with reference operation information of the vehicle previously stored to diagnose a sign of an anomaly in the vehicle.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a vehicle detection device and an article transport system having the same. More particularly, the present disclosure relates to a vehicle detection device that transports articles through a transport path, and an article transport system having the same. BACKGROUND

[0002] Generally, an overhead hoist transport device transports articles by driving a plurality of vehicles along a drive rail. In addition, the vehicles load or unload the articles to a loading port.

[0003] The vehicles repeatedly perform a driving operation and a loading / unloading operation, and information of the driving operation and the loading / unloading operation can be sensed by a sensor provided in the vehicles.

[0004] When a value sensed by the sensor deviates from a predetermined reference value, the vehicle is determined to be abnormal.

[0005] When the vehicle is abnormal, an operation of the overhead hoist transport device is stopped, and the vehicle is transported to a separate place and a cause of the abnormality in the vehicle is checked.

[0006] Since it takes time to check the abnormality of the vehicle and transport the abnormal vehicle to the separate place, the time of stopping the operation of the overhead hoist transport device is increased. Therefore, the efficiency of the overhead hoist transport device is reduced. SUMMARY

[0007] An exemplary embodiment of the present invention provides a vehicle detection device capable of checking an abnormality in a vehicle and an article transport system having the same.

[0008] According to one exemplary embodiment of the present invention, a vehicle detection device includes a storage portion and a diagnosis portion. The storage portion is configured to store operation information in response to an operation of a vehicle for transporting and loading / unloading articles along a transport path. The diagnosis portion is configured to compare the operation information stored in the storage portion with previously stored vehicle reference operation information to diagnose a sign of an abnormality in the vehicle.

[0009] In one exemplary embodiment, the diagnosis portion can receive the operation information from the storage portion based on a position of the vehicle in the transport path.

[0010] In one exemplary embodiment, the diagnosis portion can receive the operation information of each vehicle from the storage portion.

[0011] In one example embodiment, the vehicle detection device can further include an analysis section configured to analyze whether the cause of the abnormality in the vehicle is the vehicle itself or from an external environment including the conveyance path using the location of the vehicle and history information of occurrence of the abnormality in the vehicle when the diagnosis section diagnoses a sign of an abnormality.

[0012] In one example embodiment, the storage section can store the operation information in real time.

[0013] In one example embodiment, the storage section can store the operation information in a constant period of time.

[0014] In one example embodiment, the operation information can be acquired by a sensor provided on the vehicle, and the operation information can include information of a conveyance operation and loading / unloading operation information of the vehicle.

[0015] In one example embodiment, the operation information can be acquired by a sensor provided on the vehicle, and the operation information can include at least one of operation information of a motor provided on the vehicle and digital input / output information.

[0016] In one example embodiment, the operation information can be acquired by a sensor provided on the vehicle, and the operation information can include at least one of time information, distance information, distribution information, and control sequence information of a unit operation of the vehicle.

[0017] In one example embodiment, the storage section can be provided on each vehicle, and the storage section can exchange information with the diagnosis section through wireless communication.

[0018] In one example embodiment, the storage section can be provided separately from the vehicle, and the vehicle can exchange information with the storage section through wireless communication.

[0019] According to one example embodiment of the present application, a vehicle detection device includes a storage section and a diagnosis section. The storage section is configured to store location information of each of a plurality of vehicles and operation information of the vehicle at each location for conveying and loading / unloading an article along a conveyance path. The diagnosis section is configured to compare the vehicle location information stored in the storage section with reference operation information stored previously, and diagnose a sign of an abnormality of the vehicle.

[0020] In one example embodiment, the vehicle detection device can further include an analysis section configured to analyze the location of the vehicle and history information of the abnormality in the vehicle when the diagnosis section diagnoses a sign of an abnormality to analyze whether the cause of the abnormality in the vehicle is the vehicle itself or from an external environment including the conveyance path.

[0021] According to an exemplary embodiment of the present application, an article transport system includes a transport path, a plurality of vehicles, a plurality of sensors, a storage section, and a diagnosis section. The vehicles are configured to transport and load / unload articles along the transport path. The sensors are provided on each of the vehicles and configured to sense operation information of the vehicles. The storage section is configured to store the operation information of the vehicles transmitted from the sensors. The diagnosis section is configured to compare the operation information stored in the storage section with reference operation information of the vehicles previously stored to diagnose a sign of an abnormality of the vehicles.

[0022] In an exemplary embodiment, the diagnosis section can receive the operation information from the storage section based on a position of the transport path.

[0023] In an exemplary embodiment, the diagnosis section can receive the operation information of each of the vehicles from the storage section.

[0024] In an exemplary embodiment, the article transport system can further include an analysis section configured to analyze whether the cause of the abnormality in the vehicle is the vehicle itself or from an external environment including the transport path using the position of the vehicle and historical information of the abnormality in the vehicle when the diagnosis section diagnoses the sign of the abnormality.

[0025] In an exemplary embodiment, the article transport system can further include a position checking unit including a position display section provided on the transport path to check the position of the vehicle on the transport path and an identification section provided on the vehicle to identify the position display section.

[0026] In an exemplary embodiment, the article transport system can further include a position checking unit including a global positioning system (GPS) receiver provided on each of the vehicles to check the position of the vehicle on the transport path.

[0027] In an exemplary embodiment, the article includes a storage container configured to store goods.

[0028] According to the present application, the vehicle detection device analyzes the operation information of the vehicle and can diagnose a sign of an abnormality in the vehicle. Therefore, the vehicle having the sign of the abnormality is maintained preventively and the abnormality of the vehicle can be reduced. Since the stop of the vehicle transport system caused by the abnormality of the vehicle is reduced, the efficiency of the vehicle transport system can be improved.

[0029] In addition, in the vehicle detection device, when the diagnosis section diagnoses the sign of the abnormality, the analysis section analyzes the position of the vehicle and the historical information of the abnormality in the vehicle and can analyze the cause of the abnormality in the vehicle to determine whether the abnormality is caused by the vehicle itself or by an external environment of the vehicle. Therefore, the cause of the abnormality is diagnosed and solved quickly. BRIEF DESCRIPTION OF DRAWINGS

[0030] The exemplary embodiments can be understood more readily by reference to the following detailed description and considered in conjunction with the accompanying drawings, in which:

[0031] Figure 1 is a structural view illustrating an article conveying system according to one exemplary embodiment of the present application;

[0032] Figure 2 is a structural view illustrating Figure 1 is a side view illustrating the position checking unit shown in FIG. 6 according to another exemplary embodiment of the present application; and

[0033] Figure 3 is a structural view illustrating Figure 1 is a structural view illustrating the vehicle detection device shown in FIG. 8 according to another exemplary embodiment of the present application. DETAILED DESCRIPTION

[0034] Hereinafter, a charge collection plate for a fuel cell and a stack structure having the same according to embodiments of the present application will be described in detail with reference to the accompanying drawings. It is to be understood that the present application can be embodied to various altered forms and should not be understood as being limited to the exemplary embodiments set forth herein. Although the present application can have various modifications and alternative forms, specific embodiments thereof are set forth in the drawings and will be described in detail herein. It should be understood, however, that the present application is not limited to the particular embodiments set forth herein, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the present application. In the description of the drawings, like numerals refer to like elements throughout. In the drawings, the sizes and relative sizes of the layers and regions can be exaggerated for clarity. Like numbers refer to like elements throughout.

[0035] It is to be understood that, although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another. For example, a first element discussed below could be termed a second element without departing from the teachings of the present application. Also, in the following description, it is to be understood that terms such as "including", "having", "consisting of", "consisting", "involving", and variations thereof, are meant to encompass the terms "comprising" and / or "including".

[0036] The terminology used in the present application is merely for the purpose of describing particular embodiments and is not intended to limit the application. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0037] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0038] Figure 1 is a structural view illustrating an article transport system according to one exemplary embodiment of the present application. Figure 2 is a structural view illustrating a vehicle detection device according to another exemplary embodiment of the present application. Figure 1 is a side view of an inspection unit shown in FIG. 1. Figure 3 is a structural view illustrating a vehicle detection device according to another exemplary embodiment of the present application. Figure 1 is a structural view illustrating a vehicle detection device according to another exemplary embodiment of the present application.

[0039] Referring to Figures 1 to 3 The article transport system 100 is configured to transport and load / unload articles 10, and the articles 10 can be storage containers configured to store goods. Examples of the articles 10 can include boxes, front opening unified pods / front opening wafer carrier pods (FOUPs), front opening shipping boxes (FOSBs), cassettes, trays, etc. Examples of the goods can include semiconductor devices, printed circuit boards, reticles, etc.

[0040] The article transport system 100 can include a transport path 110, a plurality of vehicles 120, a sensor 130, a position inspection unit 140, and a vehicle detection device 150.

[0041] The transport path 110 is a path for transporting the articles 10, and the transport path 110 can be formed along a plurality of processing devices (not shown) configured to perform processing of goods.

[0042] The transport path 110 can include a straight path, a curved path, an inclined path, a branched / connected path, etc.

[0043] The transport path 110 can include a driving track.

[0044] The vehicle 120 can load and unload the article 10 along the transfer path 110.

[0045] Each vehicle 120 can include a transport unit 121 and a loading / unloading unit 125.

[0046] The transport unit 121 moves along the transfer path 110.

[0047] A pair of transport units 121 can be provided, and the transport units 121 can be linearly arranged in a traveling direction of the vehicle 120. The transport unit 121 can include a main body 122 and a plurality of drive wheels 123. The main body 122 has a substantially hexahedral shape. The main body 122 is connected to the loading / unloading unit 125. Here, the main body 122 can rotate about an up-down direction of the loading / unloading unit 125 as a central axis.

[0048] Although not illustrated in the drawings, a motor (not illustrated) configured to rotate the drive wheels 123 can be provided in the main body 122.

[0049] The drive wheels 123 can be provided on both sides of the main body 122. The drive wheels 123 rotate when the drive wheels 123 contact the transfer path 110, and thus can transport the main body 122 along the transfer path 110.

[0050] The loading / unloading unit 125 can include a framework 126, a sliding part 127, a hoisting part 128, and a transfer part 129.

[0051] The framework 126 is hung below the transport unit 121 so as to be fixed to the transport unit 121. The framework 126 has a hollow shape so as to receive the article 10. In addition, a lower portion, both side surfaces, or one side surface of the framework 126 can be open so that the article 10 can be transported in an up-down direction and a horizontal direction thereof. Here, both side surfaces or one side surface of the framework 126 can be substantially perpendicular to a traveling direction of the vehicle 120.

[0052] The sliding part 127 can be provided on an inner upper surface of the framework 126, and can be transported in a horizontal direction through the open side surface of the framework 126. For example, the sliding part 127 can include a guide rail and a transport block.

[0053] The hoisting part 128 can be fixed to a lower surface of the sliding part 127, and can be transported in a horizontal direction with the sliding part 127.

[0054] The hoisting part 128 can fix the transfer part 129 and can hoist and lower the transfer part 129. The hoisting part 128 can wind and unwind a transfer belt to hoist and lower the transfer belt.

[0055] The transfer part 129 is fixed to one end of the transfer belt and fixes the article 10.

[0056] When the lifting portion 128 lifts the conveyance belt, the article 10 fixed to the transfer portion 129 can be lifted with respect to the framework portion 126.

[0057] In addition, the article 10 can be transferred with respect to the framework portion 126 by horizontal transfer of the sliding portion 127 in the horizontal direction.

[0058] Although not shown in the drawings, another rotating unit (not shown) can be provided on the framework portion 126, and the sliding portion 127, the lifting portion 128, and the transfer portion 129 can be rotated.

[0059] The sensor 130 can be provided on each of the vehicles 120, and can sense operation information related to the transport operation and the loading / unloading operation of the vehicle 120.

[0060] For example, the operation information can include information for the transport operation of the article 10 using the vehicle 120 along the conveyance path 110, information for the loading / unloading operation of the article 10 when the vehicle 120 stops on the conveyance path 110, etc.

[0061] For example, the operation information can include operation information configured to drive a motor provided on the vehicle 120 to drive the transport unit 121 and the loading / unloading unit 125, and digital input / output information of a control signal for controlling the motor, etc.

[0062] For example, the operation information can be at least one of time information, distance information, distribution information, and control sequence information regarding the unit operation of the vehicle 120.

[0063] The time information is information of a time for performing the unit operation, and the distance information is information of a transport distance of the vehicle 120 or a component of the vehicle 120 for the unit operation. The distribution information is information regarding a degree of distribution of values acquired from the vehicle 120 for the same unit operation. The control sequence information is information of a sequence of a control signal provided to the vehicle 120 to perform the unit operation.

[0064] As shown in FIG. 1, the position checking unit 140 can include a position display portion 141 and an identification portion 142. Figure 1 The position display portion 141 can be provided on the conveyance path 110. The position display portion 141 can be arranged at predetermined positions of the conveyance path 110, such as branched and connected paths, curved paths, inclined paths, loading / unloading positions, etc. Examples of the position display portion 141 can include a sign, a bar code, a quick response code (QR), a reflection plate, etc.

[0065]

[0066] ​The recognition part 142 is provided on the vehicle 120 and recognizes the position display part 141. Examples of the recognition part 142 can include a sign recognition sensor, a bar code reader, a quick response matrix code (QR) reader, a light sensor, etc.

[0067] Accordingly, the position of the vehicle 120 on the transfer path 110 can be checked using the position display part 141 and the recognition part 142.

[0068] Alternatively, as shown in FIG. 1B, the position checking unit 140 can include a global positioning system (GPS) receiver 143. The GPS receiver 143 can be provided on the vehicle 120. The GPS receiver 143 receives a GPS signal from a satellite and can check the position of the vehicle 120 on the transfer path 110. Figure 2

[0069] The vehicle detection device 150 is configured to check a sign of abnormality in the vehicle 120 and can include a storage part 152, a diagnosis part 154, and an analysis part 156.

[0070] The storage part 152 can store operation information in response to a transport operation and a loading / unloading operation of the vehicle 120. The storage part 152 receives and stores the operation information sensed by the sensor 130.

[0071] In addition, the storage part 152 can store position information of each vehicle 120 acquired by the position checking unit 140 together with operation information of the vehicle 120 at each position.

[0072] For example, the storage part 152 can store the operation information in real time.

[0073] In another exemplary embodiment of the present application, the storage part 152 can store the operation information for a constant period of time.

[0074] Meanwhile, the storage part 152 can pre-store reference operation information of the vehicle 120.

[0075] For example, the reference operation information can include operation information of the vehicle 120 operated normally.

[0076] In another exemplary embodiment of the present application, the reference operation information can include operation information of the vehicle 120 operated normally, operation information of the vehicle 120 operated abnormally, and operation information of the vehicle 120 operated before an abnormality.

[0077] The reference operation information can include only the operation information. However, the reference operation information can also include position information of each vehicle 120 and operation information of the vehicle 120 at each position.

[0078] ​The diagnosis unit 154 can receive the operation information of the vehicle 120 from the storage unit 152.

[0079] For example, the diagnosis unit 154 can receive the operation information of the vehicle 120 from the storage unit 152 based on the position of the vehicle 120 on the transfer path 110.

[0080] In another exemplary embodiment of the present application, the diagnosis unit 154 can receive the operation information of each vehicle 120 from the storage unit 152.

[0081] In still another exemplary embodiment of the present application, the diagnosis unit 154 can receive the position information of each vehicle 120 from the storage unit 152 and the operation information of the vehicle 120 at each position.

[0082] The diagnosis unit 154 can compare the operation information of the vehicle 120 with the reference operation information, and can diagnose a sign of abnormality in the vehicle 120.

[0083] Alternatively, the diagnosis unit 154 can compare the position information of each vehicle 120 and the operation information of the vehicle 120 at each position with the reference operation information, and can diagnose a sign of abnormality in the vehicle 120.

[0084] When the reference operation information is the operation information of the normally operating vehicle 120 and the operation information is identical to the reference operation information, the diagnosis unit 154 can diagnose the vehicle 120 as the normally operating vehicle 120. When the operation information is the reference operation information of the normally operating vehicle 120 and the operation information is not identical to the reference operation information, the diagnosis unit 154 can diagnose the vehicle 120 as the vehicle 120 having a sign of abnormality.

[0085] In another exemplary embodiment of the present application, in the case where the reference operation information includes all of the operation information of the normally operating vehicle 120, the operation information of the abnormally operating vehicle 120, and the operation information of the vehicle 120 having a sign of abnormality, when the operation information is identical to the reference operation information of the normally operating vehicle 120, the diagnosis unit 154 can diagnose the vehicle 120 as normally operating, and when the operation information is identical to the reference operation information of the vehicle 120 having a sign of abnormality, the diagnosis unit 154 can diagnose the vehicle 120 as having a sign of abnormality.

[0086] Meanwhile, the diagnosis unit 154 can diagnose a sign of abnormality in the vehicle 120 in real time. That is, when the diagnosis unit 154 receives the operation information of the vehicle 120 from the storage unit 152, the diagnosis unit 154 can immediately diagnose a sign of abnormality in the vehicle 120.

[0087] Alternatively, at constant time intervals, the diagnosis unit 154 can diagnose a sign of abnormality in the vehicle 120.

[0088] The storage of the operation information by the storage section 15 and the diagnosis of the abnormality signs by the diagnosis section 154 can be performed in real time or can be performed in constant time periods.

[0089] Because the diagnosis section 154 can diagnose the abnormality signs in the vehicles 120 in advance, the vehicles 120 having the abnormality signs can be maintained preventively, and the occurrence of the abnormality in the vehicles 120 can be reduced. The stop of the article transfer system 100 caused by the abnormality of the vehicles 120 is reduced, and thus the efficiency of the article transfer system 100 can be improved.

[0090] As shown in FIG. 1, when the storage section 152 is provided separately from the vehicles 120, each vehicle 120 can exchange the operation information and the reference operation information with the storage section 152 through wireless communication. Examples of the wireless communication can include Wi-Fi communication, Bluetooth communication, near field communication (NFC), Zigbee communication, and the like. Figure 1 As shown in FIG. 2, when the storage section 152 is provided on each vehicle 120, each storage section 152 can exchange the operation information and the reference operation information with the diagnosis section 154 through wireless communication.

[0091] Figure 3 As shown in FIG. 2, when the storage section 152 is provided on each vehicle 120, each storage section 152 can exchange the operation information and the reference operation information with the diagnosis section 154 through wireless communication.

[0092] When the diagnosis section 154 diagnoses that the vehicle 120 has the abnormality signs, that is, when the vehicle 120 has the abnormality signs or when the transfer path 110 has the abnormality signs, the analysis section 156 can analyze the history information of the occurrence of the abnormality in the vehicle 120 at the position of the vehicle 120.

[0093] When the abnormality signs repeatedly occur in a specific vehicle 120 among the vehicles 120, the analysis section 156 determines that the specific vehicle 120 has a cause of the occurrence of the abnormality.

[0094] When the abnormality signs repeatedly occur in a plurality of vehicles 120 at a specific position of the transfer path 110, the analysis section 156 determines that the occurrence of the abnormality is caused by an external environment including the transfer path 110.

[0095] Thus, it can be easily determined whether the occurrence of the abnormality in the vehicle 120 is from the vehicle 120 itself or from the external environment including the transfer path 110.

[0096] Because the cause of the occurrence of the abnormality in the vehicle 120 can be accurately checked by the analysis section 156, the cause of the occurrence of the abnormality can be quickly and accurately solved.

[0097] ​According to the present application, the vehicle inspection device analyzes the operation information of the vehicle and can diagnose a sign of abnormality in the vehicle. Therefore, the vehicle having the sign of abnormality can be maintained preventively, and the abnormality of the vehicle can be reduced. Since the stop of the vehicle delivery system caused by the abnormality of the vehicle is reduced, the efficiency of the vehicle delivery system can be improved.

[0098] Further, in the vehicle inspection device, when the diagnosis section diagnoses the sign of abnormality, the position of the vehicle and the history of the abnormality in the vehicle are analyzed, and the cause of the abnormality in the vehicle, whether it is caused by the vehicle itself or by the external environment, can be analyzed. Therefore, the cause of the abnormality can be diagnosed and solved quickly.

[0099] While exemplary embodiments of the present application have been described with reference to certain illustrative embodiments, they are not to be limited to those precise embodiments. Thus, various modifications and changes can be made without departing from the spirit and scope of the following claims.

Claims

1. A vehicle detection device, the vehicle detection device comprising: Storage Department The storage unit is configured to store operational information in response to the operation of multiple vehicles transporting and loading / unloading items along the transport path; as well as Diagnostic Department The diagnostic unit is configured to compare the operation information stored in the storage unit with vehicle reference operation information to diagnose abnormal signs in the vehicle. The vehicle detection device further includes an analysis unit, which is configured to, when the diagnostic unit detects signs of the abnormality, analyze whether the cause of the abnormality in the vehicle is the vehicle itself or comes from the external environment including the transmission path, using the vehicle's location and historical information on the occurrence of the abnormality in the vehicle. The reference operation information includes operation information of normally operating vehicles, operation information of abnormally operating vehicles, and operation information of vehicles operating before the anomaly. When the operation information is equivalent to the reference operation information showing signs of the anomaly, the diagnostic unit can diagnose the vehicle as showing signs of the anomaly. When a specific vehicle repeatedly shows signs of the anomaly, the analysis unit determines that the specific vehicle has a cause for the anomaly. Furthermore, when multiple vehicles repeatedly show signs of the anomaly at a specific location on the transmission path, the analysis unit determines that the anomaly is caused by the external environment, including the transmission path. The operation information is acquired by multiple sensors installed on the multiple vehicles, and includes at least one of time information, distance information, distribution information, and control sequence information for a unit operation of the vehicle; the time information is information about the time for performing the unit operation, and the distance information is information about the transport distance of the vehicle or vehicle component for the unit operation; the distribution information is information about the degree of distribution of values ​​obtained from the vehicles for the same unit operation; the control sequence information is information about the sequence of control signals provided to the vehicle to perform the unit operation. The vehicle includes a conveying unit and a loading / unloading unit; the conveying unit moves along the conveying path; the vehicle is equipped with a pair of conveying units, and the conveying units are arranged linearly along the vehicle's direction of travel; the conveying unit includes a main body and a plurality of drive wheels, the main body being connected to the loading / unloading unit; the main body rotates about the loading / unloading unit in the vertical direction as a central axis; the loading / unloading unit includes a transfer section, the transfer section being fixed to one end of the conveyor belt and securing the item; The loading / unloading unit further includes a frame, a sliding part, and a lifting part. The frame is suspended below the conveying unit for fixation to the conveying unit and has a hollow shape to receive items. The sliding part is disposed on the inner upper surface of the frame and is moved horizontally across the open side surface of the frame. The lifting part is fixed to the lower surface of the sliding part and is moved horizontally using the sliding part. The lifting part fixes the transfer part and causes the transfer part to rise and fall.

2. The vehicle detection device according to claim 1, wherein, The diagnostic unit receives operational information from the storage unit based on the vehicle's position in the transmission path.

3. The vehicle detection device according to claim 1, wherein, The diagnostic unit receives operational information for each of the vehicles from the storage unit.

4. The vehicle detection device according to claim 1, wherein, The storage unit stores the operation information in real time.

5. The vehicle detection device according to claim 1, wherein, The storage unit stores the operation information at a constant time period.

6. The vehicle detection device according to claim 1, wherein, The operation information is acquired by multiple sensors installed on the multiple vehicles, and the operation information includes information on the transportation operation and loading / unloading operation of the multiple vehicles.

7. The vehicle detection device according to claim 1, wherein, The operation information is acquired by multiple sensors installed on the multiple vehicles, and the operation information includes at least one of the operation information of multiple motors installed on the multiple vehicles and digital input / output information.

8. The vehicle detection device according to claim 1, wherein, The plurality of vehicles are each equipped with the storage unit, and the storage unit exchanges information with the diagnostic unit via wireless communication.

9. The vehicle detection device according to claim 1, wherein, The storage unit is set up separately from the plurality of vehicles, and the plurality of vehicles exchange information with the storage unit via wireless communication.

10. A vehicle detection device, the vehicle detection device comprising: The storage unit is configured to store the location information of each of the multiple vehicles used for transporting and loading / unloading items along the transport path, as well as the operation information of the vehicle at each location. as well as A diagnostic unit configured to compare the vehicle's operating information stored in the storage unit with previously stored reference operating information, and to diagnose any abnormal signs of the vehicle. The vehicle detection device further includes an analysis unit, which is configured to, when the diagnostic unit detects signs of the abnormality, analyze whether the cause of the abnormality in the vehicle is the vehicle itself or comes from the external environment including the transmission path, using the vehicle's location and historical information on the occurrence of the abnormality in the vehicle. The reference operation information includes operation information of normally operating vehicles, operation information of abnormally operating vehicles, and operation information of vehicles operating before the anomaly. When the operation information is equivalent to the reference operation information showing signs of the anomaly, the diagnostic unit can diagnose the vehicle as showing signs of the anomaly. When a specific vehicle repeatedly shows signs of the anomaly, the analysis unit determines that the specific vehicle has a cause for the anomaly. Furthermore, when multiple vehicles repeatedly show signs of the anomaly at a specific location on the transmission path, the analysis unit determines that the anomaly is caused by the external environment, including the transmission path. The operation information is acquired by multiple sensors installed on the multiple vehicles, and includes at least one of time information, distance information, distribution information, and control sequence information for a unit operation of the vehicle; the time information is information about the time for performing the unit operation, and the distance information is information about the transport distance of the vehicle or vehicle component for the unit operation; the distribution information is information about the degree of distribution of values ​​obtained from the vehicles for the same unit operation; the control sequence information is information about the sequence of control signals provided to the vehicle to perform the unit operation. The vehicle includes a conveying unit and a loading / unloading unit; the conveying unit moves along the conveying path; the vehicle is equipped with a pair of conveying units, and the conveying units are arranged linearly along the vehicle's direction of travel; the conveying unit includes a main body and a plurality of drive wheels, the main body being connected to the loading / unloading unit; the main body rotates about the loading / unloading unit in the vertical direction as a central axis; the loading / unloading unit includes a transfer section, the transfer section being fixed to one end of the conveyor belt and securing the item; The loading / unloading unit further includes a frame, a sliding part, and a lifting part. The frame is suspended below the conveying unit for fixation to the conveying unit and has a hollow shape to receive items. The sliding part is disposed on the inner upper surface of the frame and is moved horizontally across the open side surface of the frame. The lifting part is fixed to the lower surface of the sliding part and is moved horizontally using the sliding part. The lifting part fixes the transfer part and causes the transfer part to rise and fall.

11. An item conveying system, the item conveying system comprising: Transmission path; Multiple vehicles configured to transport and load / unload items along the transport path; Multiple sensors are provided on each of the vehicles and configured to sense operational information of the vehicles; A storage unit configured to store operational information of the plurality of vehicles transmitted from the plurality of sensors; A diagnostic unit configured to compare the operation information stored in the storage unit with previously stored vehicle reference operation information to diagnose abnormal signs of the vehicle. as well as The analysis unit is configured to, when the diagnostic unit detects signs of the abnormality, use the vehicle's location and historical information about the occurrence of the abnormality in the vehicle to analyze whether the cause of the abnormality in the vehicle is the vehicle itself or originates from the external environment, including the transmission path. The reference operation information includes operation information of normally operating vehicles, operation information of abnormally operating vehicles, and operation information of vehicles operating before the anomaly. When the operation information is equivalent to the reference operation information showing signs of the anomaly, the diagnostic unit can diagnose the vehicle as showing signs of the anomaly. When a specific vehicle repeatedly shows signs of the anomaly, the analysis unit determines that the specific vehicle has a cause for the anomaly. Furthermore, when multiple vehicles repeatedly show signs of the anomaly at a specific location on the transmission path, the analysis unit determines that the anomaly is caused by the external environment, including the transmission path. The operation information is acquired by multiple sensors installed on the multiple vehicles, and includes at least one of time information, distance information, distribution information, and control sequence information for a unit operation of the vehicle; the time information is information about the time for performing the unit operation, and the distance information is information about the transport distance of the vehicle or vehicle component for the unit operation; the distribution information is information about the degree of distribution of values ​​obtained from the vehicles for the same unit operation; the control sequence information is information about the sequence of control signals provided to the vehicle to perform the unit operation. The vehicle includes a conveying unit and a loading / unloading unit; the conveying unit moves along the conveying path; the vehicle is equipped with a pair of conveying units, and the conveying units are arranged linearly along the vehicle's direction of travel; the conveying unit includes a main body and a plurality of drive wheels, the main body being connected to the loading / unloading unit; the main body rotates about the loading / unloading unit in the vertical direction as a central axis; the loading / unloading unit includes a transfer section, the transfer section being fixed to one end of the conveyor belt and securing the item; The loading / unloading unit further includes a frame, a sliding part, and a lifting part. The frame is suspended below the conveying unit for fixation to the conveying unit and has a hollow shape to receive items. The sliding part is disposed on the inner upper surface of the frame and is moved horizontally across the open side surface of the frame. The lifting part is fixed to the lower surface of the sliding part and is moved horizontally using the sliding part. The lifting part fixes the transfer part and causes the transfer part to rise and fall.

12. The article conveying system according to claim 11, wherein, The diagnostic unit receives operation information from the storage unit based on the location of the transmission path.

13. The article conveying system according to claim 11, wherein, The diagnostic unit receives operational information for each of the vehicles from the storage unit.

14. The article conveying system according to claim 11, wherein, The item conveying system further includes a position checking unit, which includes: A position display unit is disposed on the transport path to check the position of the plurality of vehicles on the transport path; and An identification unit is provided on the plurality of vehicles to identify the location display unit.

15. The article conveying system according to claim 11, wherein, The item transport system further includes a location checking unit, which includes a Global Positioning System (GPS) receiver installed on each of the vehicles, for checking the positions of the plurality of vehicles on the transport path.

16. The article conveying system according to claim 11, wherein, The items include storage containers configured to hold goods.

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