Patent EP-0177020-A2 (EP)
Inventor: HISATAKE TSUNEO CATERPILLAR MI
IPC: G01D9/00
Filed: 1985-10-01
Abstract: A system for recording operation data of a work machine, wherein a work schedule or an optimum operation condition of the work machine such as off-highway truck is preliminarily stored in a transportable external memory, and data obtained from an actual work of the work machine is fed back to an operator for allowing the operator to take an optimizing adjustment. In this invention, an external memory for input data may be converted to an external memory for output data to alternately store the work schedule data and an actual work data. 
     This invention will be explained with reference to a block diagram shown in Figure 1 and Figure 2. 
     The system proposed by the first invention is characterized by the following features. 
     (A). A sensor or measuring means S is provided to detect or measure an actual performance of the work machine; 
     (B). A work data-processing means 10 is provided to process the measured signals (or detected signals) obtained through the said sensor or measuring means S to obtain a sequential work data; 
     (C). A statistic processing means 10D is provided to process the said sequential work data according to a certain statistic technique to obtain a statistic data; 
     (D). A data recording means 5 is provided to write and record each of the sequential work data which is obtained from the said work data-processing means 10A and the statistic data which is obtained from the statistic processing means after a certain statistic processing to a transportable external memory-for-output data 6A for store the sequential work data and a transportable external memory-for-output data 6B for storeing the statistic data which are attached detachably; 
     (E). A monitoring means 10M is provided to judge whether an actual work data is included in a predetermined unusual pattern and record the work data with high density to be shorten intervals for sampling the actual work data of a sensor or measuring means S, when the said data is included in the unusual pattern. 
     And the system proposed by the second invention is characterized by the following features. 
     
         
         (A). A work schedule data including optimum or prescribed values aimed at in an operation of each of the components of a work machine is stored in a transportable external memory-for-input data 4; 
         (B). A data-reading means 3 is provided to read a work schedule data stored in the external memory-for-input data 4; 
         (C). The data-reading means 3 is so constructed as to detachably mount the external memory-for-input data 4 to read the work schedule data stored in the external memory-for-input data 4, and the work schedule data thus read out is stored in a data-storing means 10B to be invoked by an accomplishment ratio-determining means 10C; 
         (D). A sensor or measuring means S is provided to detect or measure an actual performance of the work machine. The measured signals (or detected signals) obtained through the sensor or measuring means S are processed by an actual work data-processing means 10A to obtain an actual work data; 
         (E). The actual work data obtained through the sensor or measuring means S and an optimizing data stored in the data-storing means 10B are invoked and compared each other by the accomplishment ratio-determining means 10C to determine the accomplishment ratio of the actual work; 
         (F). An adjustment means 8 for optimizing a work is provided, which feeds back a result judged by the accomplishment ratio-determining means 10C to an external display as an instruction to an operator or to an automatic controller; and 
         G). A data writer is provided to detachably mount an external memory-for-output 6, in which the actual data obtained from the sensor or measuring means S is written.