Method and arrangement for correlating time bases between interconnected units

Abstract

A system and arrangement for correlating time in different time bases used by interconnected units by timestamping a reference event with a time determined with respect to a first time base. A message unit provides the time to a second interconnected unit that uses a second time base. A translation device is configured to calculate a difference between the time measured by the first time base and in the second time base. The difference is used to translate a time measured by the first clock to a time in a different time base at run time.

1 . A system, comprising:
 a detector unit configured to detect a first reference event having a first time base generated in response to movement of a part in a machine and to transfer the first reference event;   a pressure unit configured to detect a second reference event having a second time base in response to sensor information within a cylinder in a motor and to transfer the second reference event;   an internal clock having a third time base; and   a translator unit configured to receive and compile the transferred first and second reference events and the third time base into a control time base and to send the control time base to a control unit.   
     
     
         2 . The system of  claim 1 , wherein the control unit is configured to send control commands using the control time base to a valve control mechanism. 
     
     
         3 . The system of  claim 1 , wherein the sensor information comprises pressure information. 
     
     
         4 . The system of  claim 1 , wherein the movement of a part in a machine comprises a wheel rotation. 
     
     
         5 . The system of  claim 1 , wherein the first and second time bases are non-linear. 
     
     
         6 . The system of  claim 1 , wherein the third time base is linear. 
     
     
         7 . The system of  claim 4 , wherein the detector unit comprises a pulse generator and pulse detector. 
     
     
         8 . The system of  claim 7 , wherein the reference event comprises the pulse generator generating a pulse in response to the wheel rotation and the pulse detector detecting the pulse. 
     
     
         9 . A system, comprising:
 a detector unit configured to detect a reference event generated in response to movement of a part in a machine;   a first control unit configured to generate a first report comprising a first clock function based on the detected reference event, a messenger unit configured to transmit the first report; and   a second control unit, configured to receive the first report, comprising a second time base and a translator unit that is configured to compile the first time base and the second time base into a control time base.   
     
     
         10 . The system of  claim 9 , wherein the second control unit is further configured to determine commands based on the first reports and to send the commands operating on the control time base to the first control unit. 
     
     
         11 . The system of  claim 9 , wherein the movement of a part in a machine comprises a wheel rotation. 
     
     
         12 . The system of  claim 9 , wherein the detector unit comprises a pulse generator and pulse detector. 
     
     
         13 . The system of  claim 9 , wherein the first time base is circular and the second time base is linear. 
     
     
         14 . The system of  claim 10 , wherein the command messages control a braking force applied to the wheel. 
     
     
         15 . The system of  claim 12 , wherein the reference event comprises the pulse generator generating a pulse in response to the wheel rotation and the pulse detector detecting the pulse. 
     
     
         16 . The system of  claim 14 , wherein the pulse is generated with an inverted sign. 
     
     
         17 . A system, comprising:
 a detector unit configured to detect a reference event;   an interface unit configured to interface between the detector unit and a processor, the processor configured to:
 interpret the reference event using instructions stored in a first storage unit, and 
 transfer the interpreted reference event to a second storage unit; and 
   a clock configured to determine a reference time of the detected reference event.   
     
     
         18 . The system of  claim 17 , wherein the interface unit is further configured to obtain a first reference time from the clock. 
     
     
         19 . The system of  claim 17 , further comprising a function execution detector that obtains a second reference time from the clock. 
     
     
         20 . The system of  claim 19 , further comprising a capture register configured to receive the reference event from the function execution detector and to temporarily store the reference event.