Indicator detection system and indicator detection method

1. An indicator detection system comprising:

a data acquiring unit configured to acquire operation data of a machine and operation history data indicating an operation history of the machine including an operation load and operation conditions during that time in addition to a cumulative operation time of the machine;

an estimation unit configured to calculate a first estimated value of a monitoring parameter of the machine which is to be monitored based on the operation data, the operation history data, and an estimation model for estimating a value of the monitoring parameter at a time point corresponding to the operation history data for the monitoring parameter using the operation history data as an input; and

a state evaluating unit configured to evaluate a state of the machine based on a difference between the first estimated value of the monitoring parameter and a measured value or a second estimated value of the monitoring parameter included in the operation data acquired by the data acquiring unit.

2. The indicator detection system according to claim 1 , wherein the operation history data includes at least one of the number of times of starting and the number of times of stopping of the machine.

3. The indicator detection system according to claim 1 , wherein the operation history data includes at least one of an operation time of the machine, an operation time for each operation pattern of the machine, and an elapsed time after introduction of the machine.

4. The indicator detection system according to claim 1 , wherein the operation history data includes at least one of the number of times of performing maintenance and check on the machine and an elapsed time after maintenance and check on the machine has been performed.

5. The indicator detection system according to claim 1 , wherein the operation history data includes a cumulative output value of the machine.

6. The indicator detection system according to claim 1 , wherein the operation data includes at least one of alarm information and event information which are generated by a device that monitors the machine.

7. The indicator detection system according to claim 1 , wherein the estimation model is constructed based on operation data and operation history data of other machines of the same type as the machine in addition to the operation data and the operation history data of the machine.

8. The indicator detection system according to claim 1 , further comprising an estimation model constructing unit configured to construct the estimation model based on the operation history data and the operation data of the machine at a time point corresponding to the operation history data.

9. The indicator detection system according to claim 1 , wherein the state evaluating unit is configured to additionally acquire the operation history data and to evaluate a state of the machine based on an evaluation criterion of the monitoring parameter which is to be monitored and which corresponds to operation results indicated by the operation history data.

10. The indicator detection system according to claim 1 , wherein the state evaluating unit is configured to predict an abnormality which is to occur in the future based on the difference and a correlation between a history of the difference and an abnormality which has actually occurred.

11. An indicator detection system comprising:

a data acquiring unit configured to acquire operation data of a machine and operation history data indicating an operation history of the machine including an operation load and operation conditions during that time in addition to a cumulative operation time of the machine;

an estimation unit configured to calculate a first estimated value of a monitoring parameter of the machine which is to be monitored based on the operation data and an estimation model for estimating a value of the monitoring parameter at a time point corresponding to the operation history data for the monitoring parameter; and

a state evaluating unit configured to evaluate a state of the machine based on a difference between the first estimated value of the monitoring parameter estimated by the estimation unit and a measured value or a second estimated value of the monitoring parameter included in the operation data acquired by the data acquiring unit and an evaluation criterion of the monitoring parameter which is to be monitored and which corresponds to operation results indicated by the operation history data.

12. An indicator detection method which is performed by an indicator detection system, the indicator detection method comprising:

acquiring operation data of a machine and operation history data indicating an operation history of the machine including an operation load and operation conditions during that time in addition to a cumulative operation time of the machine;

calculating a first estimated value of a monitoring parameter of the machine which is to be monitored based on the operation data, the operation history data and an estimation model for estimating a value of the monitoring parameter at a time point corresponding to the operation history data for the monitoring parameter using the operation history data as an input; and

evaluating a state of the machine based on a difference between the first estimated value of the monitoring parameter and a measured value or a second estimated value of the monitoring parameter included in the operation data acquired by the data acquiring unit.