Abstract: A control system automates control of reefer container resources in a reefer container system including a remote server computer in communication with reefer containers. Each reefer container includes a refrigeration system to control a climate of an interior cargo compartment of the reefer container. The refrigeration system includes a refrigeration circuit, including a compressor, a cooling space, and sensors to measure or estimate refrigeration system readings. The refrigeration system transmits refrigeration system parameter data; the remote server computer obtains the parameter data acquired during operation of the refrigeration system from at least one reefer container, and estimates a condition of the refrigeration system, including determining whether an alarm has been issued, or whether the estimated reefer container condition indicates that the refrigeration system requires maintenance or testing.

Abstract: Techniques for remotely monitoring the operation of a cargo shipping reefer container configured with a refrigeration system that has installed therewith a control computer coupled with sensors monitoring the operation of the refrigeration system include: collecting a first and second set of observation data comprising a respective first and second sequence of measurement values measured by sensors coupled to the control computer; running a simulation model that receives the first set of observation data as input and outputs simulated values; the simulation model is configured to output the simulated values as estimates of the second set of the observations; computing an indicator value as a function of residual values computed from the difference between the values of the second set of observations and the simulated values; and evaluating the indicator value against a predefined criterion and issuing an alarm signal in case the predefined criterion is exceeded.

Abstract: A control system automates control of reefer container resources in a reefer container system including a remote server computer in communication with reefer containers. Each reefer container includes a refrigeration system to control a climate of an interior cargo compartment of the reefer container. The refrigeration system includes a refrigeration circuit, including a compressor, a cooling space, and sensors to measure or estimate refrigeration system readings. The refrigeration system transmits refrigeration system parameter data; the remote server computer obtains the parameter data acquired during operation of the refrigeration system from at least one reefer container, and estimates a condition of the refrigeration system, including determining whether an alarm has been issued, or whether the estimated reefer container condition indicates that the refrigeration system requires maintenance or testing.

Abstract: Techniques for remotely monitoring the operation of a cargo shipping reefer container configured with a refrigeration system that has installed therewith a control computer coupled with sensors monitoring the operation of the refrigeration system include: collecting a first and second set of observation data comprising a respective first and second sequence of measurement values measured by sensors coupled to the control computer; running a simulation model that receives the first set of observation data as input and outputs simulated values; the simulation model is configured to output the simulated values as estimates of the second set of the observations; computing an indicator value as a function of residual values computed from the difference between the values of the second set of observations and the simulated values; and evaluating the indicator value against a predefined criterion and issuing an alarm signal in case the predefined criterion is exceeded.