Abstract:
A mobile equipment maintenance monitoring system includes one or more sensors configured and disposed to detect non-time-based parameter of a mobile equipment component and a controller operatively coupled to the one or more sensors. The controller includes a wireless communication device configured and disposed to wirelessly communicate a maintenance alert to a remote monitoring system.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    Exemplary embodiments pertain to the art of mobile systems and, more particularly, to a maintenance monitoring system for mobile equipment. 
         [0002]    Mobile equipment may experience unplanned down time resulting from a component failure. The component failure may lead to an unplanned repair that could prevent the mobile equipment from being fielded or result in lost product. Often times, fleet operators employ a maintenance schedule to reduce unplanned downtime. The maintenance schedule may rely on hours operated, miles traveled or other metrics to determine when a particular maintenance operation may be warranted. 
       BRIEF DESCRIPTION OF THE INVENTION 
       [0003]    Disclosed is a mobile equipment maintenance monitoring system including one or more sensors configured and disposed to detect a non-time-based parameter of a mobile equipment component and a controller operatively coupled to the one or more sensors. The controller includes a wireless communication device configured and disposed to wirelessly communicate a maintenance alert to a remote monitoring system. 
         [0004]    Also disclosed is a mobile equipment system including a mobile equipment component and a mobile equipment maintenance monitoring system operatively connected to the mobile equipment component. The mobile equipment maintenance system includes one or more sensors configured and disposed to detect a non-time-based parameter of the mobile equipment component and a controller operatively coupled to the one or more sensors. The controller includes a wireless communication device configured and disposed to wirelessly communicate a maintenance alert to a remote monitoring system. 
         [0005]    Further disclosed is a method of monitoring a mobile equipment component. The method includes detecting a non-time-based parameter of the mobile equipment component, determining whether the non-time-based parameter exceeds a non-time-based parameter threshold, and wirelessly signaling a maintenance need if the non-time-based parameter exceeds the non-time-based parameter threshold. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    The following descriptions should not be considered limiting in any way. With reference to the accompanying drawings, like elements are numbered alike: 
           [0007]      FIG. 1  depicts a mobile equipment system including a mobile equipment maintenance monitoring system, in accordance with an exemplary embodiment; 
           [0008]      FIG. 2  depicts a block diagram illustrating the mobile equipment maintenance monitoring system of  FIG. 1 ; and 
           [0009]      FIG. 3  depicts a flow chart illustrating a method of monitoring a mobile equipment component, in accordance with an aspect of an exemplary embodiment. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0010]    A detailed description of one or more embodiments of the disclosed apparatus and method are presented herein by way of exemplification and not limitation with reference to the Figures. 
         [0011]    A mobile equipment system, in accordance with an exemplary embodiment, is indicated generally at  2 , in  FIG. 1 . Mobile equipment system  2  is shown in the form of a semi-trailer  4  including a tractor/truck portion  6  and a trailer portion  8 . Trailer portion  8  includes a mobile equipment component  9  shown in the form of a refrigeration system  10 . Truck portion  6  provides a motive force to tractor portion  8 . Truck portion  6  may also provide power to refrigeration system  10  arranged with trailer portion  8 . More specifically, truck portion  6  may be mechanically linked to and/or electrically coupled with refrigeration system  10 . At this point, it should be understood that mobile equipment system  2  may take on numerous forms including various overland and oversea transportation systems. It should also be understood that mobile equipment component  9  may also take on various forms. 
         [0012]    In accordance with an exemplary embodiment, mobile equipment system  2  includes a mobile equipment maintenance monitoring system  20  operatively coupled to truck portion  6  and mobile equipment component  9 . As shown in  FIG. 2 , mobile equipment maintenance monitoring system  20  includes a remote monitoring system  25  including a controller  30  having a central processor unit (CPU)  32 , a memory module  34 , and a communication module  36 . Communication module  36  may take the form of a satellite communication device and/or a cellular communication device. Controller  30  is operatively connected to one or more timers  39  that monitor time-based parameters associated with truck portion  6 , trailer portion  8  and/or mobile equipment component  9 . The time-based parameters are passed to controller  30  and compared with values stored in memory module  34  to determine whether a time-based maintenance interval is indicated. Time-based maintenance intervals may include fluid changes, tire changes, system checks, and the like. 
         [0013]    In further accordance with an exemplary embodiment, mobile equipment maintenance monitoring system  20  includes one or more non-time-based sensors  44 . Non-time-based sensors  44  may take the form of accelerometers or vibration sensors, pressure sensors, temperature sensors, and the like. Non-time-based sensors  44  detect non-time-based parameters associated with mobile equipment system  2 . The term “non-time-based” should be understood to define parameters that do not rely on time and distance traveled by mobile equipment system  2 . For example, non-time-based parameters may include monitoring vibration parameters, pressure parameters, and/or temperature parameters associated with refrigeration system  10 . As will be discussed below, monitoring non-time-based parameters associated with refrigeration system  10  will reduce unplanned downtime of mobile equipment system  2 . 
         [0014]    Reference will now follow to  FIG. 3  in describing a method  50  of monitoring mobile equipment system  2 . In block  52 , timers  39  monitor time-based parameters associated with mobile equipment system  2 . In block  54 , a determination is made whether a time-based maintenance interval is indicated. A time-based maintenance interval may include a fluid change, tire check, or other system check. Non-time-based parameters are monitored in block  56 . In block  58 , a determination is made whether a non-time-based maintenance interval is indicated. If in either block  54  or block  58  a maintenance interval is indicated, a maintenance request is generated in block  60 . The maintenance request is communicated, via communication module  36 , to remote monitoring system  25 . Remote monitoring system  25  may take the form of a web portal, a fleet maintenance system or the like, associated with mobile equipment system  2 . 
         [0015]    A determination is made in block  62  whether parts needed for the maintenance are in stock at one or more maintenance facilities. At this point, mobile equipment system  2  may be directed to a scheduled maintenance interval in block  64  at a maintenance location that has the necessary parts in stock. If parts are not in stock, an order request may be made in block  68  before directing the mobile equipment system  2  to a maintenance interval. 
         [0016]    At this point it should be understood that the exemplary embodiments describe a system that monitors non-time-based parameters associated with a mobile equipment system to reduce unscheduled maintenance. Monitoring non-time-based parameters, such as accelerations, could determine when mobile equipment component motions are approaching typical displacement limits. For example, excessive refrigeration compressor motion could signal a need to replace vibrasorbers. In this manner, ancillary component damage and unscheduled maintenance may be reduced. Further, communicating the need for maintenance to a remote monitoring station may reduce downtime further by directing the mobile equipment to a nearby maintenance facility, or arrange for maintenance at another convenient facility that includes in stock parts, as time permits. 
         [0017]    While the invention has been described with reference to an exemplary embodiment or embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the claims.