Method of converting a time based data logger to a time and random event based data logger

A method of adding asynchronous logging of data relative to events into a time based data logger which stores operator initiated headers in a data array, as well as synchronously storing data relative to variables of a transport refrigeration unit at predetermined constant time intervals. The operat...

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Bibliographische Detailangaben
Hauptverfasser:	WONG, ALBERT C. K, JUREWICZ, ROMUALD M, NIXON, JAMES E, HERRIG, DOYLE G, HANSON, JAY L
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE BLASTING CHECKING-DEVICES COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS FUNCTIONAL ELEMENTS OF SUCH SYSTEMS GENERATING RANDOM NUMBERS HEAT PUMP SYSTEMS HEATING ICE-BOXES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PERFORMING OPERATIONS PHYSICS REFRIGERATION OR COOLING REFRIGERATORS REGISTERING OR INDICATING THE WORKING OF MACHINES REGULATING TIME OR ATTENDANCE REGISTERS TRANSPORTING VEHICLES IN GENERAL VOTING OR LOTTERY APPARATUS WEAPONS
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Beschreibung
Zusammenfassung:	A method of adding asynchronous logging of data relative to events into a time based data logger which stores operator initiated headers in a data array, as well as synchronously storing data relative to variables of a transport refrigeration unit at predetermined constant time intervals. The operator associated headers include a preamble having a predetermined number of data bytes which include a header designator and a digital code which identifies the specific type of header being entered. An event header is provided having a preamble which includes the same number of data bytes as the preamble of the operator associated headers, for each type of event to be asynchronously stored in the data array. The header designator associated with the operator associated headers is inserted into the preamble of each of the event headers. A digital code is provided which identifies each event header, and the digital code is inserted into the preamble of each of the event headers. A data field follows the preamble of each event header, with predetermined data being inserted into the data field when an event occurs. An event header is stored in the data array asynchronously, at the time the associated event occurs. Each event header is time stamped when stored in the data array, and data stored in the data array is downloaded to a predetermined device, including asynchronously stored event headers and synchronous data stored at predetermined time intervals.