Active container management system

A system for monitoring contents of a shipping container, the system comprising:

• a lock mechanism configured to lock at least one door of the shipping container in a closed position by attaching to an outside of the door of the shipping container;
• a housing enclosing at least a portion of the lock mechanism;
• and
• a lock circuit at least partially enclosed within the housing, the lock circuit comprising:
• a memory,
• a wireless module electrically coupled with the memory, wherein:
• the wireless module is configured to wirelessly receive information from at least one sensor associated with the shipping container,
• the information includes manifest data of the contents of the shipping container,
• the wireless module is configured to store in the memory:
• the information from the at least one sensor,
• a serial number associated with the shipping container,
• a serial number associated with the lock mechanism, and
• an identification number associated with at least one of the at least one sensor, and
• at least one of the wireless module or the sensor is powered wirelessly,
• a wireless power transmitter configured to generate a wireless power signal to supply power to a sensor on a second shipping container, without requiring the wireless module to receive information from the sensor;
• and
• a lock controller electrically coupled with the memory and the wireless module configured:
• to receive commands related to operation of the lock mechanism,
• to monitor the stored information,
• to identify a change of state of the at least one sensor, and
• to generate data to be transmitted to a remote location via the wireless module, the data including at least two of:
• sensor measurements,
• a chain-of-custody record,
• an authentication code that identifies the sensor, and/or
• an authentication code that identifies the lock mechanism.