Container shock detection system

Abstract

Systems and methods are provided and include a modem control unit that is configured to receive a force signal from a force sensor representing an amount of impact force applied to a container. The modem is configured to determine based on the force signal, a bias value, a shock intensity of the force signal, and a shock severity of the force signal in response to a determination that the shock intensity is greater than a shock intensity threshold. The modem control unit is configured to determine an average shock severity based on a plurality of shock severity values and an absolute value indicator based on the bias value and the shock severity value, an average absolute value indicator based on the average shock severity and the bias value, and a presence of excessive mechanical shock based on the average absolute value indicator and based on the absolute value indicator.

Description

[0001] Cross References to Related Applications

[0002] This application claims priority to U.S. Patent Application No. 15 / 706,000, filed September 15, 2017, and also claims the benefit of U.S. Provisional Application No. 62 / 396,625, filed September 19, 2016. The entire disclosure of the above application is incorporated herein by reference. technical field

[0003] The present disclosure relates to impact detection systems for containers, such as refrigerated containers or refrigerators. Background technique

[0004] This section provides background information related to the present disclosure which is not necessarily prior art.

[0005] As the transport of goods in intermodal containers using multiple modes of transport and without any processing of the goods themselves when changing modes, intermodal cargo transport is complex because it involves the movement of goods around the world . During intermodal transport, cargo may experience harmonic vibrations and / or exte...

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