ENERGY MONITORING DEVICE AND CONTROL METHOD THEREFOR, AND ENERGY MONITORING PROGRAM

• US 20120084030A1
• Filed: 09/29/2011
• Published: 04/05/2012
• Est. Priority Date: 04/10/2009
• Status: Active Grant

• Current Assignee: Omron Corporation
• Original Assignee: Omron Corporation
• Inventors: KITAGAWA, Shintaro, TATEISHI, Taisuke, YAMAMURA, Kenji, SAITO, Hiroshi, ENDO, Maki, NAKASHIMA, Chisato
• Granted Patent: US 8,942,934 B2
• Time in Patent Office: Days
• US Class Current: 702/61
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05B 19/40938 Tool management
• CPC Class Codes: G05B 2219/49092 Vary, change controlled parameter as function of detected power
• CPC Class Codes: G05B 23/0283 Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL] preventive maintenance, i.e. planning maintenance according to the available resources without monitoring the system G06Q10/06
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

A processing machine processes a work and repeats processes on the work, thereby consuming energy. Within the consumed energy, room for improvement is computed by an energy monitoring device and is referred to as an amount of energy that can be improved. An energy monitoring device includes a power data acquirer that acquires a time-series power data measured by a power meter, a cycle detector that detects a single-cycle power data from the power data acquired by the acquirer, a divider that divides the single-cycle power data detected by the detector into an added-value creating portion and an unproductive portion, and a computing unit that computes an amount of energy consumed in the unproductive portion divided by the divider and defines it as the amount of energy to be improved.

Claims

1. An energy monitoring device that computes an amount of energy to be improved within energy consumed by equipment executing a process, comprising:

a power data acquirer that acquires time-series physical quantity data related to the consumed energy;

a cycle detector that detects time-series data of predetermined duration in the time-series data acquired by the power data acquirer;

a divider that divides the time-series data detected by the cycle detector; and

a computer that computes an amount of energy consumed in a non-added-value portion as the amount of energy to be improved, the non-added-value portion not producing any added-value in the process and obtained from a portion divided by the divider.

2. The energy monitoring device according to claim 1, wherein the time-series data detected by the cycle detector includes time-series data in a single-cycle from a start to an end of the process by the equipment.

3. The energy monitoring device according to claim 1, wherein the physical quantity data includes one of electric energy and electric current.

4. The energy monitoring device according to claim 2, further comprising:

a memory that pre-stores waveform model information indicating a waveform model of the single-cycle time-series data, and dividing conditions to divide by the divider, wherein

the cycle detector detects single-cycle time-series data compatible with the waveform model information stored in the memory, and wherein

the divider divides based on the dividing conditions stored in the memory.

5. The energy monitoring device according to claim 4, further comprising:

a waveform model generator that generates the waveform model information using the time-series physical quantity data acquired by the power data acquirer.

6. The energy monitoring device according to claim 2, further comprising:

a memory that pre-stores a cycle-time design value that is a design value for a period from a start to an end of the process by the equipment, and

wherein the cycle detector comprises a cycle start detector that detects a start-point of the single-cycle time-series data based on the cycle-time design value.

7. The energy monitoring device according to claim 6,

wherein the memory stores waveform pattern information indicating a waveform pattern of the single-cycle time-series data, and wherein

the cycle start detector detects a start-point of the single-cycle time-series data by detecting a single-cycle time-series data compatible with the waveform pattern information stored in the memory.

8. The energy monitoring device according to claim 2, further comprising:

a memory that stores a waveform pattern information related to a waveform pattern of the single-cycle time-series data;

a waveform pattern generator that generates the waveform pattern using a plurality of single-cycle time-series data detected by the cycle detector, and stores the waveform pattern in the memory.

9. The energy monitoring device according to claim 2, wherein the divider further comprises:

a feature value computer that computes a feature value to divide the single-cycle duration at a point in time based on the single-cycle time-series data detected by the cycle detector; and

a transition time determiner that identifies a start-point of a non-added-value portion not producing any added-value in the process based on the feature value computed by the feature value computer.

10. The energy monitoring device according to claim 1, wherein the computer further computes an amount of energy consumed in an added-value creating portion from a portion divided by the divider, the added-value creating portion creating an added-value in the process.

13. The energy monitoring device according to claim 2, wherein the physical quantity data includes one of electric energy and electric current.

14. The energy monitoring device according to claim 4, wherein the memory pre-stores a cycle-time design value that is a design value for a period from a start to an end of the process by the equipment, and

wherein the cycle detector comprises a cycle start detector that detects a start-point of the single-cycle time-series data based on the cycle-time design value.

15. The energy monitoring device according to claim 5, wherein the memory pre-stores a cycle-time design value that is a design value for a period from a start to an end of the process by the equipment, and

wherein the cycle detector comprises a cycle start detector that detects a start-point of the single-cycle time-series data based on the cycle-time design value.

16. The energy monitoring device according to claim 14, wherein the memory stores waveform pattern information indicating a waveform pattern of the single-cycle time-series data, and wherein

the cycle start detector detects a start-point of the single-cycle time-series data by detecting a single-cycle time-series data compatible with waveform pattern information stored in the memory.

17. The energy monitoring device according to claim 15, wherein the memory stores waveform pattern information indicating a waveform pattern of the single-cycle time-series data, and wherein

the cycle start detector detects a start-point of the single-cycle time-series data by detecting a single-cycle time-series data compatible with waveform pattern information stored in the memory.

18. The energy monitoring device according to claim 4, wherein the memory stores a waveform pattern information related to a waveform pattern of the single-cycle time-series data, and wherein

a waveform pattern generator generates the waveform pattern using a plurality of single-cycle time-series data detected by the cycle detector, and stores the waveform pattern in the memory.

19. The energy monitoring device according to claim 5, wherein the memory stores a waveform pattern information related to a waveform pattern of the single-cycle time-series data, and wherein

a waveform pattern generator generates the waveform pattern using a plurality of single-cycle time-series data detected by the cycle detector, and stores the waveform pattern in the memory.

20. The energy monitoring device according to claim 6, wherein the memory stores a waveform pattern information related to a waveform pattern of the single-cycle time-series data, and wherein

a waveform pattern generator generates the waveform pattern using a plurality of single-cycle time-series data detected by the cycle detector, and stores the waveform pattern in the memory.

11. A method that controls an energy monitoring device to compute an amount of energy to be improved within an energy consumed by equipment executing a process, comprising the steps of:

acquiring time-series physical quantity data related to the consumed energy;

detecting time-series data of predetermined duration from the acquired time-series data;

dividing the detected time-series data; and

computing an amount of energy consumed in a non-added-value portion as the amount of energy to be improved, the non-added-value portion not producing any added-value in the process and obtained from a portion of the divided data.

12. A non-transitory computer readable storage medium having computer instructions stored thereon comprising an energy monitoring program that operates an energy monitoring device to compute an amount of energy to be improved within an energy consumed by equipment executing a process, the program causing a computer to perform:

acquiring time-series physical quantity data related to the consumed energy;

detecting time-series data of predetermined duration from the acquired time-series data;

dividing the detected time-series data; and

computing an amount of energy consumed in a non-added-value portion as the amount of energy to be improved, the non-added-value portion not producing any added-value in the process and obtained from a portion of the divided data.