WO2018073943A1 - 寿命予測装置 - Google Patents
寿命予測装置 Download PDFInfo
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- WO2018073943A1 WO2018073943A1 PCT/JP2016/081146 JP2016081146W WO2018073943A1 WO 2018073943 A1 WO2018073943 A1 WO 2018073943A1 JP 2016081146 W JP2016081146 W JP 2016081146W WO 2018073943 A1 WO2018073943 A1 WO 2018073943A1
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- fan
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
- G05B19/4065—Monitoring tool breakage, life or condition
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/4184—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by fault tolerance, reliability of production system
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/04—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
- G05B13/048—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators using a predictor
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32194—Quality prediction
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32234—Maintenance planning
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0283—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]
Definitions
- the present invention relates to a life prediction apparatus for predicting the life of a fan of a control unit that controls equipment in the FA (Factory Automation) field.
- ⁇ Equipment in the FA field is generally realized by combining multiple types of equipment.
- a plurality of devices constituting equipment in the FA field are controlled by a programmable controller that is a control unit that integrates control processing and information processing.
- a programmable controller When a programmable controller is provided with a fan that has a limited life, maintenance is required to prevent operation stoppage and abnormal operation due to deterioration over time.
- the programmable controller has a desire to reduce the number of maintenance.
- a method for determining the lifetime of a fan which is a component having a limited life in the apparatus, according to the user's operation mode and the characteristics of each component (see Patent Document 1).
- the present invention has been made in view of the above, and an object of the present invention is to obtain a life prediction apparatus that can predict the remaining life of a life-limited component without providing a temperature sensor.
- the present invention is a fan life prediction apparatus.
- the life prediction device is a temperature inside the device in which the fan is provided based on at least one of the usage rate of the central processing unit that performs arithmetic processing, the temperature of the central processing unit, and the rotational speed of the fan.
- the remaining life of the fan is calculated based on the temperature calculation unit that calculates the temperature, the storage unit that stores the life data indicating the life of the fan according to the temperature, the internal temperature calculated by the temperature calculation unit, and the life data.
- a lifetime predicting unit is a temperature inside the device in which the fan is provided based on at least one of the usage rate of the central processing unit that performs arithmetic processing, the temperature of the central processing unit, and the rotational speed of the fan.
- the remaining life of the fan is calculated based on the temperature calculation unit that calculates the temperature, the storage unit that stores the life data indicating the life of the fan according to the temperature, the internal temperature calculated by the temperature calculation unit, and the life data.
- the life prediction apparatus has an effect that it is possible to predict the remaining life of a component with a limited life without providing a temperature sensor.
- FIG. 1 The figure which shows the structure of a control system provided with the control unit which comprises the lifetime prediction apparatus which concerns on Embodiment 1.
- FIG. Functional block diagram of the life prediction apparatus according to the first embodiment The figure which shows the temperature estimation data which shows the temperature inside a CPU unit when the usage rate of CPU of the lifetime prediction apparatus which concerns on Embodiment 1 is "1A”.
- the figure which shows the temperature estimation data which shows the temperature inside a CPU unit when the usage rate of CPU of the lifetime prediction apparatus which concerns on Embodiment 1 is "1B".
- storage stored shows The figure which shows an example which the lifetime prediction part of the lifetime prediction apparatus which concerns on Embodiment 1 calculated the ratio of the operation time with respect to a lifetime.
- FIG. 1 The flowchart which shows an example of the operation
- FIG. 1 The flowchart which shows an example of the process of CPU of the remaining life calculated by the flowchart shown in FIG.
- FIG. 1 The figure which shows an example of the temperature estimation data which showed the temperature inside a CPU unit with respect to ambient temperature of the lifetime prediction apparatus which concerns on Embodiment 3 for every rotation speed of a fan.
- FIG. 3 The figure which shows an example of the temperature estimation data which showed the internal temperature of CPU unit according to the usage rate of the CPU of the lifetime prediction apparatus which concerns on Embodiment 4, and the rotation speed of a fan for every ambient temperature.
- FIG. 5 The figure which shows an example of the temperature estimation data which showed the temperature inside the CPU unit according to CPU temperature and the usage rate of CPU of the lifetime prediction apparatus which concerns on Embodiment 5 for every ambient temperature.
- FIG. 5 The figure which shows an example of the temperature estimation data which showed the internal temperature of the CPU unit according to CPU temperature and the rotation speed of a fan of the lifetime prediction apparatus which concerns on Embodiment 6 for every ambient temperature.
- FIG. 7 shows the structure of a control system provided with the computer which comprises the lifetime prediction apparatus which concerns on Embodiment 7.
- FIG. The figure which shows the hardware constitutions of the computer which comprises the lifetime prediction apparatus which concerns on Embodiment 7.
- FIG. 1 is a diagram illustrating a configuration of a control system including a control unit that configures the life prediction apparatus according to the first embodiment.
- the control system 1 constitutes a facility in the FA (Factory Automation) field for automating a factory.
- the control system 1 includes three devices 2, 3, and 4, but is not limited to three.
- the devices 2, 3, and 4 are sensors or driving devices.
- the sensor is not limited to a sensor that detects the flow rate, pressure, concentration, or temperature installed in the facility.
- the drive device is not limited to a drive device that performs an operation that is a switch, a regulating valve, a solenoid valve, a motor, or a pump installed in the facility.
- the computer 6 creates a control program to be executed by the control unit 5 and transmits it to the control unit 5.
- the control unit 5 controls the devices 2, 3, and 4 by executing a control program.
- the control unit 5 is a programmable controller (Programmable Logic Controllers (PLC)).
- PLC Programmable Logic Controllers
- the programmable controller controls the devices 2, 3, and 4 by executing a control program.
- the programmable controller is defined by JIS (Japanese Industrial Standards) B 3502: 2011.
- the computer 6 is an engineering tool used in facilities in the FA field, and includes an input unit 65 as shown in FIG.
- the input unit 65 receives an operation input from the user and external information.
- the input unit 65 is an external storage medium reader that reads information on a keyboard, mouse, and external storage medium, but is not limited to a keyboard, mouse, and external storage medium reader.
- the computer 6 communicates with the control unit 5 via the network N.
- the network N is a computer network that connects the computer 6 and the control unit 5 so that they can communicate with each other.
- the network N is a LAN (Local Area Network) installed in the FA facility, but the network N is not limited to the LAN.
- LAN Local Area Network
- FIG. 2 is a diagram illustrating a hardware configuration of a control unit that constitutes the life prediction apparatus according to the first embodiment.
- the control unit 5 includes a CPU (Central Processing Unit) unit 5A for processing and executing a control program, and an I / O (Input / Output) unit 5B connected to the devices 2, 3, and 4.
- a CPU Central Processing Unit
- I / O Input / Output
- three I / O units 5B are provided and connected to one of the devices 2, 3, and 4, respectively.
- the I / O unit 5B includes at least a circuit board 5B1, a memory (not shown) that is mounted on the circuit board 5B1 and stores a computer program, and a CPU (not shown) that executes the computer program stored in the memory.
- the computer program stored in the memory is a program for controlling the devices 2, 3, and 4 in accordance with instructions from the CPU unit 5A.
- the CPU unit 5A includes a circuit board 5A1, a CPU 51 mounted on the circuit board 5A1 and executing a control program, and a memory 5A3 connected to the CPU 51 via an internal bus B1.
- the CPU 51 is a central processing unit that controls the control unit 5.
- the CPU 51 detects the usage rate of the CPU 51.
- the usage rate of the CPU 51 refers to the ratio of the time during which the CPU 51 executes some processing per unit time.
- the CPU 51 estimates the temperature of the CPU 51 based on the usage rate of the CPU 51.
- the unit time refers to one hour, one day, or one scan time.
- the CPU unit 5A includes a communication interface 5A4 for communicating with the computer 6, a bus interface 5A5 connected to the I / O unit 5B, and a storage device 5A6 for storing a control program and a computer program for calculating the remaining life LE of the fan 52.
- the fan 52 and the display device 5A7 are provided.
- the CPU 51, memory 5A3, communication interface 5A4, bus interface 5A5, storage device 5A6, fan 52, and display device 5A7 are connected via an internal bus B1.
- the bus interface 5A5 is a bus bridge circuit that connects the internal bus B1 and the expansion bus B2.
- the bus interface 5A5 is connected to the I / O unit 5B via the expansion bus B2.
- the storage device 5A6 is an SSD (Solid State Drive) or an HDD (Hard Disk Drive), but is not limited to an SSD or an HDD.
- the control program and the computer program for calculating the remaining life LE are realized by software, firmware, or a combination of software and firmware.
- the memory 5A3 is configured by a nonvolatile semiconductor memory or a volatile semiconductor memory.
- a nonvolatile semiconductor memory or a volatile semiconductor memory a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, or the like can be used.
- the memory 5A3 may be configured with a magnetic disk or the like.
- the fan 52 radiates the heat inside the CPU unit 5A, mainly the heat generated by the CPU 51, to the outside.
- the fan 52 is a part with a limited life.
- the fan 52 includes an impeller that is rotated by a motor, and a rotational speed detection unit 52a that detects the rotational speed of the impeller.
- the rotation speed of the impeller is the rotation speed of the fan 52.
- the rotation speed detection means 52a is configured by a light detection sensor or a magnetic sensor. Further, the rotational speed detection means 52a may detect the rotational speed of the fan 52 based on the value of the current flowing through the motor or the time during which the current flows.
- the display device 5A7 is configured by a liquid crystal display (LCD), an organic EL display (OELD), or an inorganic EL display (IELD: Inorganic Electro-Luminescence Display).
- LCD liquid crystal display
- OELD organic EL display
- IELD inorganic Electro-Luminescence Display
- control unit 5 is a unit that executes a control program to acquire and store information on the devices 2, 3, and 4 and controls operations of the devices 2, 3, and 4.
- the CPU unit 5 ⁇ / b> A of the control unit 5 is a life prediction apparatus that calculates the remaining life LE of the fan 52.
- the CPU 51 of the CPU unit 5A is a central arithmetic processing unit that performs arithmetic processing of the CPU unit 5A.
- the input unit 65 is connected to the CPU unit 5A that is the life prediction apparatus according to the first embodiment. As shown in FIG.
- the CPU unit 5 ⁇ / b> A that is a life prediction device is a device provided with a storage unit 53 that stores a control program, a user notification unit 54 that displays a remaining life LE, and a fan 52.
- a temperature calculation unit 55 that calculates the internal temperature IT of 5A and a life prediction unit 56 that calculates the remaining life LE of the fan 52 are provided.
- the lifetime as used in this specification shows the durable time from the start of use of the fan 52 provided by the manufacturer of the fan 52, and the remaining life LE is the remaining operable time of the fan 52 after the start of use. Indicates.
- the temperature calculation unit 55 calculates the temperature IT inside the CPU unit 5A based on at least one of the usage rate of the CPU 51, the temperature of the CPU 51, and the rotational speed of the fan 52.
- the CPU 51 stores the usage rate of the CPU 51 in the storage unit 53 when debugging the control program of the control system 1, temporarily operating the control program, or operating the control system 1.
- the temporary operation refers to executing the control program without actually operating the devices 2, 3, and 4.
- the rotation speed of the fan 52 means the rotation speed of the fan 52 per unit time, that is, the rotation speed.
- An ambient temperature AT which is the temperature outside the CPU unit 5A detected by the temperature sensor, is input to the temperature calculation unit 55 via the I / O unit 5B connected to the temperature sensor, and the rotational speed detection means 52a of the fan 52 is detected.
- the number of rotations of the fan 52 detected by is input.
- the temperature calculation unit 55 accesses the storage unit 53, and the usage rate of the CPU 51, the ambient temperature AT, and the storage unit 53 are stored in FIGS. 4 and 5. Based on the temperature estimation data TD-1 shown in FIG. 6 as an example, the temperature IT inside the CPU unit 5A is calculated.
- the temperature estimation data TD-1 shown in FIG. 4, FIG. 5 and FIG. 6 stored in the storage unit 53 shows the relationship between the ambient temperature AT and the temperature IT inside the CPU unit 5A for each usage rate of the CPU 51.
- the data of the usage rate 1A (FIG. 4), the usage rate 1B (FIG. 5), and the usage rate 1C (FIG. 6) are shown.
- the rate is not limited to these.
- the temperature estimation data TD-1 is indicated by a reference TD-1A when the one having a usage rate of 1A is distinguished, and is indicated by a reference TD-1B when the one having a usage rate of 1B is indicated separately.
- the code TD-1C When distinguishing the usage rate of 1C, it is indicated by the code TD-1C.
- the temperature estimation data TD-1A, TD-1B, and TD-1C are data created by actually measuring the temperature IT inside the casing of the CPU unit 5A.
- the temperature estimation data TD-1A, TD-1B, and TD-1C are stored in the storage unit 53 when the CPU unit 5A is shipped from the factory.
- the operation of the CPU unit 5A is started.
- the usage rate of the CPU 51, the ambient temperature AT, and the internal temperature IT are totalized, and after the totalization, the CPU 51 automatically creates the data illustrated in FIGS. 4 to 6 and stores it in the storage unit 53. .
- the temperature calculation unit 55 calculates the temperature IT inside the CPU unit 5A.
- the temperature calculation unit 55 debugs the control program stored in the storage unit 53, temporarily operates the control program, or operates the control system 1.
- a plurality of temperature estimation data TD-1A, TD-1B, and TD shown in FIG. 4 to FIG. 6 are stored in the storage unit 53 as the temperature estimation data TD-1 at the usage rate of the CPU 51 closest to the usage rate. Select from -1C.
- the temperature calculation unit 55 converts the temperature estimation data TD-1 at the usage rate of the CPU 51 closest to the usage rate of the CPU 51 stored in the storage unit 53 into a plurality of temperature estimation data TD-1A, TD-1B, TD. -1C, instead of selecting from among the plurality of temperature estimation data TD-1A, TD-1B, TD-1C shown in FIG. 4 to FIG. Select two or more near ones, calculate an arithmetic average or geometric mean of the two or more selected temperature estimation data TD-1, calculate new temperature estimation data TD-1 ', and store it in the storage unit 53 You may do it.
- the temperature calculation unit 55 uses the ambient temperature AT and the selected temperature estimation data TD-1 or newly calculated temperature estimation data TD-1 ′, and the internal temperature of the CPU unit 5A, which is the internal temperature of the unit. IT is calculated. As described above, in the first embodiment, the temperature calculation unit 55 selects or newly calculates the temperature estimation data TD-1 based on the usage rate of the CPU 51, and in addition to the usage rate of the CPU 51, the ambient temperature AT and Based on the selected or newly calculated temperature estimation data TD-1, the temperature IT inside the CPU unit 5A is calculated. The temperature calculation unit 55 outputs the calculated temperature IT inside the CPU unit 5A to the life prediction unit 56.
- the temperature calculation unit 55 calculates the temperature IT inside the CPU unit 5A affected by the arrangement of the power device, the heat sink, and the components in the CPU unit 5A
- the CPU unit 5A calculated by the temperature calculation unit 55 is calculated.
- the internal temperature IT takes into account the arrangement of power devices, heat sinks, and components in the CPU unit 5A.
- the life prediction unit 56 calculates the temperature IT inside the CPU unit 5A calculated by the temperature calculation unit 55 and the storage unit 53 in FIG.
- the lifetime of the fan 52 is calculated based on the indicated fan lifetime data LD.
- the fan life data LD shown in FIG. 7 stored in the storage unit 53 is life data indicating the life of the fan 52 corresponding to the temperature IT inside the CPU unit 5A.
- the fan life data LD is input from the input unit 65 to the storage unit 53 and stored.
- the fan life data LD indicates the relationship between the temperature IT inside the CPU unit 5A and the life of the fan 52, and is data in which the life of the fan 52 changes according to the change in the temperature IT inside the CPU unit 5A.
- the fan life data LD according to the first embodiment is 80000 hours under a constant environment at a temperature of 60 ° C., and the lifetime becomes shorter as the temperature becomes higher than 60 ° C. It is shown that.
- the life prediction unit 56 calculates the life of the fan 52 at the temperature IT inside the CPU unit 5A calculated by the temperature calculation unit 55 based on the fan life data LD. .
- the life prediction unit 56 next calculates the ratio of the operating time RT of the control unit 5 to the life of the fan 52.
- the life prediction unit 56 inputs the operation time RT of the control unit 5 of the control system 1 from the input unit 65 of the computer 6 and inputs it from the input unit 65 of the computer 6.
- the operating time RT of the control unit 5 of the control system 1 is divided by the life of the fan 52, and the ratio of the operating time RT to the life of the fan 52 is calculated.
- the life prediction unit 56 calculates the remaining life LE of the fan 52 after operation using the ratio of the operation time RT to the life of the fan 52.
- the life prediction unit 56 reads the remaining life data LED stored in the storage unit 53 when calculating the remaining life LE of the fan 52.
- the remaining life data LED stored in the storage unit 53 indicates the remaining life LE of the fan 52.
- the remaining life data LED is a value indicating the ratio of the remaining life LE to the life when the life of the fan 52 when not used is 100%.
- the storage area of the storage unit 53 is provided with a storage area capable of storing the remaining life data LED. In the storage unit 53, the remaining life data LED calculated by the life prediction unit 56 is overwritten in the storage area by the life prediction unit 56.
- the life prediction unit 56 subtracts the ratio of the operating time RT from the ratio of the remaining life LE to the life indicated by the remaining life data LED to obtain the ratio of the remaining life LE to the life of the fan 52 after operation, that is, new remaining life data. LED is calculated.
- the life of the fan 52 when the temperature IT inside the CPU unit 5A is 60 ° C. is 80000 hours as shown in FIG.
- the life prediction unit 56 determines that the lifetime is 10 hours.
- the ratio of 10 hours that is the operating time RT to 80000 hours that is is calculated to be 0.0125%.
- the ratio of the operating time RT to the lifetime indicates the ratio of the operating time RT when the lifetime is 100%.
- the life prediction unit 56 stores the ratio of the remaining life LE to the life of the fan 52 after the operation time RT operation in the storage unit 53 as a new remaining life data LED. 8 and 10 show the remaining life LE with parallel diagonal lines.
- the life prediction unit 56 calculates the remaining life LE after operation by multiplying the life of the fan 52 by the ratio of the remaining life LE to the life after operation. When the ratio of the remaining life LE to the life after operation is 49.9875% and the internal temperature IT of the CPU unit 5A is 60 ° C., the life prediction unit 56 has a life of 80000 hours. The remaining life LE is calculated as 39990 hours.
- the life prediction unit 56 transmits the remaining life LE of the fan 52 after operation to the user notification unit 54. In the present invention, the life prediction unit 56 may transmit the ratio of the remaining life LE to the life after operation to the user notification unit 54.
- the user notification unit 54 is installed on the outer surface of the casing of the CPU unit 5A and displays the remaining life LE received from the life prediction unit 56. Further, the user notification unit 54 may display a ratio of the remaining life LE to the life with respect to the life.
- the lifetime predicting unit 56 calculates the remaining lifetime LE when the fan 52 is rotating during the operation time RT at a predetermined predetermined rotation speed. In the present invention, the remaining life LE is calculated by correcting the operating time RT based on the rotational speed of the fan 52.
- the functions of the temperature calculation unit 55 and the life prediction unit 56 are realized by the CPU 51 reading and executing a computer program for calculating the remaining life LE stored in the storage device 5A6.
- the function of the storage unit 53 is realized by the storage device 5A6.
- the function of the user notification unit 54 is realized by the display device 5A7.
- FIG. 11 is a flowchart illustrating an example of an operation for calculating the remaining life of the CPU fan of the CPU unit that is the life prediction apparatus according to the first embodiment.
- FIG. 12 is a flowchart illustrating an example of processing of the remaining life CPU calculated by the flowchart illustrated in FIG. 11.
- the CPU 51 of the CPU unit 5A executes the flowchart shown in FIG. 12 after executing the flowchart shown in FIG. 11 before controlling the devices 2, 3, and 4 by executing the control program.
- the CPU 51 of the CPU unit 5A executes debugging of the control program or temporary operation of the control program (step ST1).
- the CPU 51 of the CPU unit 5A grasps the usage rate of the CPU 51 during debugging, provisional operation, or operation of the control system 1, and stores it in the storage unit 53 (step ST2).
- the storage area of the storage unit 53 is provided with a storage area in which the usage rate of the CPU 51 can be stored. In the storage unit 53, the usage rate of the CPU 51 is overwritten by the CPU 51 in the storage area.
- the CPU 51 of the CPU unit 5A receives the input of the ambient temperature AT via the I / O unit 5B connected to the temperature sensor, receives the operating time RT input from the input unit 65 of the computer 6, and stores the ambient temperature in the storage unit 53.
- the temperature AT and the operating time RT are stored (step ST3).
- the storage area of the storage unit 53 is provided with a storage area that can store the ambient temperature AT, and the storage area of the storage unit 53 can store the operating time RT. Is provided.
- the input ambient temperature AT is overwritten in the storage area by the CPU 51, and the input operating time RT is overwritten in the storage area by the CPU 51.
- the CPU 51 functioning as the temperature calculation unit 55 of the CPU unit 5A reads the usage rate of the CPU 51 and the temperature estimation data TD-1 stored in the storage unit 53, and the CPU 51 of the CPU 51 closest to the usage rate of the CPU 51 stored in the storage unit 53 is read. Temperature estimation data TD-1 at the time of usage is selected or new temperature estimation data TD-1 ′ is calculated (step ST4).
- the CPU 51 functioning as the temperature calculation unit 55 of the CPU unit 5A reads the ambient temperature AT stored in the storage unit 53, stores the selected temperature estimation data TD-1 or newly calculated temperature estimation data TD-1 ', and Based on the ambient temperature AT read from the unit 53, the temperature IT inside the CPU unit 5A is calculated (step ST5).
- the usage rate of the CPU 51 is “1A” in step ST5
- the CPU 51 functioning as the temperature calculation unit 55 of the CPU unit 5A uses the temperature estimation data TD-1 shown in FIG. A temperature IT-1 inside the CPU unit 5A at a certain time is calculated.
- the CPU 51 functioning as the life prediction unit 56 of the CPU unit 5A reads the fan life data LD and the remaining life data LED from the storage unit 53 (step ST6).
- the CPU 51 functioning as the lifetime predicting unit 56 of the CPU unit 5A is based on the fan lifetime data LD and the remaining lifetime data LED, and the environment of the ambient temperature AT input via the I / O unit 5B connected to the temperature sensor.
- the remaining life LE after operating the operating time RT input from the input unit 65 below is calculated (step ST7).
- the CPU 51 functioning as the life prediction unit 56 of the CPU unit 5 ⁇ / b> A displays the remaining life LE on the user notification unit 54.
- the CPU 51 of the CPU unit 5A determines whether or not the remaining life LE is equal to or less than a predetermined value set in advance (step ST11).
- the predetermined value is a value that requires maintenance of the fan 52, but the predetermined value is not limited to a value that requires maintenance.
- step ST11 When the CPU 51 of the CPU unit 5A determines that the remaining life LE is not less than or equal to a predetermined value set in advance (step ST11: No), a new remaining life data LED is calculated based on the remaining life LE, and the calculated new The remaining life data LED is stored in the storage unit 53, the remaining life data LED stored in the storage unit 53 is updated (step ST12), and the flowchart shown in FIG. Thereafter, the CPU 51 of the CPU unit 5A executes the control program received from the computer 6 to control the devices 2, 3, and 4.
- the CPU unit 5A which is the life prediction apparatus according to the first embodiment, includes a storage unit 53 that stores fan life data LD indicating the life of the fan 52 according to the temperature.
- the CPU unit 5A includes a temperature calculation unit 55 that calculates the internal temperature IT of the CPU unit 5A based on the usage rate of the CPU 51, and the internal temperature of the CPU unit 5A calculated by the fan life data LD and the temperature calculation unit 55. It functions as a life prediction unit 56 that calculates the remaining life LE of the fan 52 based on IT. For this reason, before the operation of the control system 1, the CPU unit 5 ⁇ / b> A receives an input from the input unit 65 of the scheduled operation time RT of the control unit 5 during the operation of the control system 1. The remaining life LE can be calculated.
- the CPU unit 5A can grasp the remaining life LE of the fan 52 before the operation, and the remaining life LE of the fan 52 falls below a predetermined value during the operation of the control system 1 to perform control. It is possible to suppress the system 1 from stopping operation and abnormal operation. Therefore, the CPU unit 5A has an effect of being able to predict the remaining life LE of the fan 52, which is a long-life component based on the temperature characteristics, without providing a temperature sensor in the casing of the CPU unit 5A.
- the CPU 51 functions as the temperature calculation unit 55 that calculates the temperature IT inside the CPU unit 5A based on the usage rate of the CPU 51
- the CPU unit 5A has a temperature sensor that detects the temperature IT inside the CPU unit 5A.
- the temperature IT inside the CPU unit 5A can be obtained without installation.
- the fan life data LD stored in the storage unit 53 is data whose life changes in accordance with a change in the temperature IT inside the CPU unit 5A. For this reason, the CPU unit 5A calculates the life of the fan 52 based on the fan life data LD whose life changes according to the change in the temperature IT inside the CPU unit 5A. can do.
- the temperature calculation unit 55 calculates the temperature IT inside the CPU unit 5A based on the ambient temperature AT outside the CPU unit 5A in addition to the usage rate of the CPU 51.
- the temperature IT inside can be accurately calculated.
- the life prediction unit 56 calculates the life of the fan 52 at the temperature IT inside the CPU unit 5A calculated by the temperature calculation unit 55 from the fan life data LD.
- the life prediction unit 56 calculates the ratio of the operation time RT of the control unit 5 to the calculated life of the fan 52. Therefore, even if the CPU unit 5A uses the fan life data LD whose life changes when the temperature changes, the CPU unit 5A sets the operating time RT of the control unit 5 every time the temperature IT inside the CPU unit 5A changes. It can be calculated as a ratio to the lifetime. As a result, the CPU unit 5A can accurately calculate the remaining life LE of the fan 52 even if the temperature IT inside the CPU unit 5A changes.
- the life prediction unit 56 calculates the remaining life LE of the fan 52 using the ratio of the operating time RT to the life of the fan 52. As a result, the CPU unit 5A can accurately calculate the remaining life LE of the fan 52 even if the temperature IT inside the CPU unit 5A changes.
- the CPU unit 5A is configured such that the temperature calculation unit 55 uses the CPU unit 5A based on the usage rate of the CPU 51, the ambient temperature AT outside the CPU unit 5A, and the temperature estimation data TD-1 determined for each usage rate of the CPU 51. Since the internal temperature IT is calculated, the internal temperature IT of the CPU unit 5A can be accurately calculated.
- the CPU unit 5A calculates the temperature IT inside the CPU unit 5A based on the usage rate of the CPU 51 when the temperature calculation unit 55 is in debugging, provisional operation, or when the control system 1 is operating.
- the remaining life LE after the operation of the fan 52 can be calculated before the operation.
- the CPU unit 5 ⁇ / b> A has an input from the input unit 65 in addition to the temperature IT inside the CPU unit 5 ⁇ / b> A calculated by the temperature calculation unit 55 by the life prediction unit 56 and the fan life data LD stored in the storage unit 53.
- the remaining life LE of the fan 52 is calculated based on the operating time RT. For this reason, the CPU unit 5A can calculate the remaining life LE of the fan 52 after operation before operation.
- the CPU unit 5A can calculate the remaining life LE of the fan 52 after operation before operation, and displays a warning on the user notification unit 54 when the calculated remaining life LE after operation is equal to or less than a predetermined value. To do. For this reason, the CPU unit 5A can warn in advance when the possibility that the fan 52 will fail during operation is high, and can suppress the possibility that the facilities in the FA field will stop operating.
- Embodiment 2 a life prediction apparatus according to Embodiment 2 of the present invention will be described based on FIG. 13 and FIG.
- the same parts as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
- the CPU unit 5A which is the life prediction apparatus according to the second embodiment, performs the temperature estimation data TD-2 stored in the storage unit 53 and the processes in steps ST2-2 and ST4-2 shown in FIG. Except for the difference from the first embodiment, the second embodiment is the same as the first embodiment.
- the data sheet is shown for each temperature, and in the present embodiment, the data of the temperature 2A is shown, but the temperature is not limited to this.
- the temperature estimation data TD-2 is data created by actually measuring the temperature IT inside the casing of the CPU unit 5A, and is stored in the storage unit 53 when the CPU unit 5A is shipped from the factory.
- the usage rate of the CPU 51, the ambient temperature AT, and the internal temperature IT may be totaled, and after the totalization, the CPU 51 may automatically create and store in the storage unit 53.
- Embodiment 2 when the control program of the control system 1 is debugged, the CPU 51 of the CPU unit 5A stores the temperature of the CPU 51 in the storage unit 53 when the control program is temporarily operated or the control system 1 is operated.
- the temperature calculation unit 55 debugs the control program stored in the storage unit 53, the temperature of the CPU 51 is closest to the temperature of the CPU 51 when the control program is temporarily operated or the control system 1 is operated.
- Temperature estimation data TD-2 is selected from the plurality of temperature estimation data TD-2 stored in the storage unit 53.
- the temperature calculation unit 55 selects two or more temperature estimation data TD-2 close to the temperature of the CPU 51 from the plurality of temperature estimation data TD-2 stored in the storage unit 53, and selects the selected two or more It is also possible to calculate the arithmetic mean or geometric mean of the temperature estimation data TD-2 and calculate new temperature estimation data TD-2 ′ and store it in the storage unit 53.
- the temperature calculation unit 55 receives the input of the ambient temperature AT via the I / O unit 5B connected to the temperature sensor, and the received ambient temperature AT and the selected temperature estimation data TD-2 or Using the newly calculated temperature estimation data TD-2 ′, the internal temperature IT of the CPU unit 5A, which is the internal temperature of the unit, is calculated. As described above, in the second embodiment, the temperature calculation unit 55 selects or newly calculates the temperature estimation data TD-2 based on the temperature of the CPU 51, and selects or newly calculates the ambient temperature AT in addition to the temperature of the CPU 51. Based on the newly calculated temperature estimation data TD-2 ′, the temperature IT inside the CPU unit 5A is calculated.
- the CPU 51 of the CPU unit 5A executes the same process as in the first embodiment except for the processes in steps ST2-2 and ST4-2.
- the CPU 51 of the CPU unit 5A estimates the temperature of the CPU 51 during debugging, provisional operation, or operation of the control system 1, and stores it in the storage unit 53 (step ST2-2).
- the storage area of the storage unit 53 is provided with a storage area capable of storing the temperature of the CPU 51, and the temperature of the CPU 51 is overwritten by the CPU 51 in the storage area 53.
- the CPU 51 of the CPU unit 5A receives the input of the ambient temperature AT via the I / O unit 5B connected to the temperature sensor, and stores the operation time RT from the input unit 65 (step ST3), and then stores it in the storage unit 53.
- the CPU 51 reads the temperature and temperature estimation data TD-2 and selects the temperature estimation data TD-2 at the temperature of the CPU 51 closest to the temperature of the CPU 51 stored in the storage unit 53, or new temperature estimation data TD-2 ′ is calculated (step ST4-2).
- the CPU 51 of the CPU unit 5A calculates the temperature IT inside the CPU unit 5A (step ST5), and reads the fan life data LD and the remaining life data LED (step ST6).
- the remaining life LE of 52 is calculated (step ST7).
- the CPU unit 5A includes a storage unit 53 that stores fan life data LD indicating the life of the fan 52 according to temperature.
- the CPU unit 5A includes a temperature calculation unit 55 that the CPU 51 calculates the internal temperature IT of the CPU unit 5A based on the temperature of the CPU 51, and the internal temperature IT of the CPU unit 5A that is calculated by the fan life data LD and the temperature calculation unit 55. And functions as a life prediction unit 56 that calculates the remaining life LE of the fan 52. For this reason, the CPU unit 5A accepts an input from the input unit 65 of the scheduled operating time RT of the control unit 5 when the control system 1 is operating before the control system 1 is operated. Similarly, it is possible to grasp the remaining life LE of the fan 52 before operation.
- the CPU unit 5A is configured such that the temperature calculation unit 55 includes an internal temperature of the CPU unit 5A based on the temperature of the CPU 51, the ambient temperature AT outside the CPU unit 5A, and the temperature estimation data TD-2 determined for each temperature of the CPU 51. Therefore, the temperature IT inside the CPU unit 5A can be accurately calculated.
- Embodiment 3 FIG. Next, a life prediction apparatus according to Embodiment 3 of the present invention will be described based on FIG. 15 and FIG. 15 and 16, the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.
- the CPU unit 5A which is the life prediction apparatus according to the third embodiment, performs the temperature estimation data TD-3 stored in the storage unit 53 and the processes in steps ST2-3 and ST4-3 shown in FIG. Except for the difference from the first embodiment, the second embodiment is the same as the first embodiment.
- the data is shown for each number of revolutions of 52, and in the present embodiment, data of the number of revolutions 3A is shown, but the number of revolutions is not limited to this.
- the temperature estimation data TD-3 is data created by actually measuring the temperature IT inside the casing of the CPU unit 5A, and is stored in the storage unit 53 when the CPU unit 5A is shipped from the factory.
- the usage rate of the CPU 51, the ambient temperature AT, and the internal temperature IT may be totaled, and after the totalization, the CPU 51 may automatically create and store in the storage unit 53.
- the CPU 51 of the CPU unit 5A stores the number of rotations of the fan 52 in the storage unit 53 when debugging the control program of the control system 1, temporarily operating the control program, or operating the control system 1.
- the temperature calculation unit 55 is the fan closest to the rotation speed of the fan 52 when the control program stored in the storage unit 53 is debugged, when the control program is temporarily operated, or when the control system 1 is operated.
- the temperature estimation data TD-3 at the rotation speed of 52 is selected from the plurality of temperature estimation data TD-3 stored in the storage unit 53.
- the temperature calculation unit 55 selects two or more temperature estimation data TD-3 close to the rotation speed of the fan 52 from the plurality of temperature estimation data TD-3 stored in the storage unit 53, and selects the selected two An arithmetic average or geometric average of two or more temperature estimation data TD-3 may be calculated, and new temperature estimation data TD-3 ′ may be calculated and stored in the storage unit 53.
- the temperature calculation unit 55 receives an input of the ambient temperature AT via the I / O unit 5B connected to the temperature sensor, and stores the input ambient temperature AT in the storage unit 53. Using the ambient temperature AT and the selected temperature estimation data TD-3 or newly calculated temperature estimation data TD-3 ′, the internal temperature IT of the CPU unit 5A, which is the internal temperature of the unit, is calculated. As described above, in the third embodiment, the temperature calculation unit 55 selects or newly calculates the temperature estimation data TD-3 based on the rotation speed of the fan 52, and in addition to the rotation speed of the fan 52, the ambient temperature Based on the AT and the selected or newly calculated temperature estimation data TD-3 ′, the temperature IT inside the CPU unit 5A is calculated.
- the CPU 51 of the CPU unit 5A executes the same process as in the first embodiment except for the processes in steps ST2-3 and ST4-3.
- the CPU 51 of the CPU unit 5A measures the rotational speed of the fan 52 during debugging, provisional operation, or operation of the control system 1, and stores it in the storage unit 53 (step ST2-3).
- the storage area of the storage unit 53 is provided with a storage area that can store the rotation speed of the fan 52.
- the storage section 53 stores the rotation speed of the fan 52 in the storage area by the CPU 51. Overwritten.
- the CPU 51 of the CPU unit 5A receives the input of the ambient temperature AT via the I / O unit 5B connected to the temperature sensor, and receives the operating time RT input from the input unit 65 (step ST3), and then the storage unit
- the fan 52 rotation speed and temperature estimation data TD-3 stored in 53 are read out, and the temperature estimation data TD-3 at the time of the fan 52 rotation speed closest to the fan 52 rotation speed stored in the storage section 53 is selected.
- new temperature estimation data TD-3 ′ is calculated (step ST4-3).
- the CPU 51 of the CPU unit 5A calculates the temperature IT inside the CPU unit 5A (step ST5), and reads the fan life data LD and the remaining life data LED (step ST6).
- the remaining life LE of 52 is calculated (step ST7).
- the CPU unit 5A includes a storage unit 53 that stores fan life data LD indicating the life of the fan 52 according to temperature.
- the CPU unit 5A includes a temperature calculation unit 55 that the CPU 51 calculates the internal temperature IT of the CPU unit 5A based on the rotation speed of the fan 52, and an internal unit of the CPU unit 5A that is calculated by the fan life data LD and the temperature calculation unit 55. It functions as a life prediction unit 56 that calculates the remaining life LE of the fan 52 based on the temperature IT.
- the CPU unit 5A receives the input from the input unit 65 of the scheduled operating time RT of the control unit 5 when the control system 1 is operating before the control system 1 is operated, thereby enabling the first embodiment. Similarly to the above, it is possible to grasp the remaining life LE of the fan 52 before operation.
- the CPU unit 5A determines that the temperature calculation unit 55 is based on the rotational speed of the fan 52, the ambient temperature AT outside the CPU unit 5A, and the temperature estimation data TD-3 determined for each rotational speed of the fan 52. Since the temperature IT inside the unit 5A is calculated, the temperature IT inside the CPU unit 5A can be accurately calculated.
- Embodiment 4 FIG. Next, a life prediction apparatus according to Embodiment 4 of the present invention will be described based on FIG. 17 and FIG. 17 and 18, the same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
- the CPU unit 5A which is the life prediction apparatus according to the fourth embodiment, has the temperature estimation data TD-4 stored in the storage unit 53, and the processing of steps ST2-4, ST4-4 and ST5-4 shown in FIG. Are the same as those of the first embodiment except that they are different from those of the first embodiment.
- the temperature estimation data TD-4 which is the second relationship shown in FIG. 17 and stored in the storage unit 53 of the CPU unit 5A that is the life prediction apparatus according to the fourth embodiment, includes the usage rate of the CPU 51, the rotational speed of the fan 52, and the like. Is a data sheet showing the internal temperature IT of the CPU unit 5A corresponding to each ambient temperature AT. In the present embodiment, the data of the ambient temperature 4A is shown, but the ambient temperature 4A is not limited to this.
- the temperature estimation data TD-4 is data created by actually measuring the temperature IT inside the casing of the CPU unit 5A, and is stored in the storage unit 53 when the CPU unit 5A is shipped from the factory. In the invention, when the operation of the CPU unit 5A is started, the usage rate of the CPU 51, the ambient temperature AT, and the internal temperature IT may be totaled, and after the totalization, the CPU 51 may automatically create and store in the storage unit 53. Note that in the temperature estimation data TD-4 shown in FIG. 17, the rotational speed of the fan 52 is “4AA1,” “4AA2,” “4AA3,” and the usage rate of the CPU 51 is “4AB1,” “4AB2,” “ 4AB3 "..., but is not limited to these.
- the CPU 51 of the CPU unit 5A executes the same process as in the first embodiment except for the processes in step ST2-4, step ST4-4, and step ST5-4.
- the CPU 51 of the CPU unit 5A grasps the usage rate of the CPU 51 during debugging, provisional operation, or operation of the control system 1, measures the rotational speed of the fan 52, and stores it in the storage unit 53 ( Step ST2-4).
- the CPU 51 of the CPU unit 5A receives the input of the ambient temperature AT via the I / O unit 5B connected to the temperature sensor, and receives the operating time RT input from the input unit 65 (step ST3), and then the storage unit
- the temperature estimation data TD-4 stored in the memory unit 53 is read out, and the temperature estimation data TD-4 stored in the memory unit 53 corresponds to the ambient temperature AT closest to the ambient temperature AT input from the input unit 65.
- Temperature estimation data TD-4 is selected (step ST4-4).
- the CPU 51 of the CPU unit 5A reads the usage rate of the CPU 51 and the rotation speed of the fan 52 stored in the storage unit 53.
- the CPU 51 of the CPU unit 5A calculates the internal temperature IT of the CPU unit 5A based on the read usage rate of the CPU 51, the rotation speed of the fan 52, and the selected temperature estimation data TD-4 (step ST5-4). .
- the CPU 51 of the CPU unit 5A reads the fan life data LD and the remaining life data LED (step ST6), and then calculates the remaining life LE of the fan 52 (step ST7).
- the CPU unit 5A includes a storage unit 53 that stores fan life data LD indicating the life of the fan 52 according to temperature.
- the CPU 51 calculates the temperature IT 55 that calculates the internal temperature IT of the CPU unit 5A based on the usage rate of the CPU 51 and the rotational speed of the fan 52, and the fan life data LD and the temperature calculator 55 calculate.
- It functions as a life prediction unit 56 that calculates the remaining life LE of the fan 52 based on the temperature IT inside the CPU unit 5A.
- the CPU unit 5A receives the input from the input unit 65 of the scheduled operating time RT of the control unit 5 when the control system 1 is operating before the control system 1 is operated, thereby enabling the first embodiment. Similarly to the above, it is possible to grasp the remaining life LE of the fan 52 before operation.
- the CPU unit 5A has the CPU 55 based on the temperature estimation data TD-4 indicating the temperature IT inside the CPU unit 5A according to the usage rate of the CPU 51 and the rotation speed of the fan 52. Since the internal temperature IT is calculated, the internal temperature IT of the CPU unit 5A can be accurately calculated.
- Embodiment 5 FIG. Next, a life prediction apparatus according to Embodiment 5 of the present invention will be described based on FIG. 19 and FIG. 19 and 20, the same parts as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.
- the CPU unit 5A which is the life prediction apparatus according to the fifth embodiment, performs the temperature estimation data TD-5 stored in the storage unit 53, and the processing in steps ST2-5, ST4-5, and ST5-5 shown in FIG. Are the same as those of the first embodiment except that they are different from those of the first embodiment.
- the temperature estimation data TD-5 shown in FIG. 19 stored in the storage unit 53 of the CPU unit 5A, which is the life prediction apparatus according to the fifth embodiment, is stored in the CPU unit 5A according to the temperature of the CPU 51 and the usage rate of the CPU 51. Is a data sheet showing the temperature IT for each ambient temperature AT, and in the present embodiment, data of the ambient temperature 5A is shown, but the ambient temperature is not limited to this.
- the temperature estimation data TD-5 is data created by actually measuring the temperature IT inside the casing of the CPU unit 5A, and is stored in the storage unit 53 when the CPU unit 5A is shipped from the factory.
- the usage rate of the CPU 51, the ambient temperature AT, and the internal temperature IT may be totaled, and after the totalization, the CPU 51 may automatically create and store in the storage unit 53.
- the temperature estimation data TD-5 shown in FIG. 19 indicates that the temperature of the CPU 51 is “5AA1”, “5AA2”, “5AA3”,..., And the usage rate of the CPU 51 is “5AB1”, “5AB2”, “5AB3”,. ⁇ Although it is, it is not limited to these.
- the CPU 51 of the CPU unit 5A executes the same processes as in the first embodiment except for the processes of step ST2-5, step ST4-5, and step ST5-5.
- the CPU 51 of the CPU unit 5A grasps the usage rate of the CPU 51 during debugging, temporary operation, or operation of the control system 1, estimates the temperature of the CPU 51, and stores it in the storage unit 53 (step ST2). -5).
- the CPU 51 of the CPU unit 5A receives the input of the ambient temperature AT via the I / O unit 5B connected to the temperature sensor, and receives the operating time RT input from the input unit 65 (step ST3), and then the storage unit
- the temperature estimation data TD-5 stored in the memory 53 is read out, and the temperature estimation data TD-5 stored in the storage unit 53 corresponds to the ambient temperature AT closest to the ambient temperature AT input from the input unit 65.
- Temperature estimation data TD-5 is selected (step ST4-5).
- the CPU 51 of the CPU unit 5A reads the temperature of the CPU 51 and the usage rate of the CPU 51 stored in the storage unit 53.
- the CPU 51 of the CPU unit 5A calculates the internal temperature IT of the CPU unit 5A based on the read temperature of the CPU 51, the usage rate of the CPU 51, and the selected temperature estimation data TD-5 (step ST5-5).
- the CPU 51 of the control unit 5 reads the fan life data LD and the remaining life data LED (step ST6), and then calculates the remaining life LE of the fan 52 (step ST7).
- the CPU unit 5A includes a storage unit 53 that stores fan life data LD indicating the life of the fan 52 according to temperature.
- the CPU unit 5A includes a temperature calculation unit 55 that calculates an internal temperature IT of the CPU unit 5A based on the temperature of the CPU 51 and the usage rate of the CPU 51, and a CPU unit calculated by the fan life data LD and the temperature calculation unit 55. It functions as a life prediction unit 56 that calculates the remaining life LE of the fan 52 based on the internal temperature IT of 5A.
- the CPU unit 5A receives the input from the input unit 65 of the scheduled operating time RT of the control unit 5 when the control system 1 is operating before the control system 1 is operated, thereby enabling the first embodiment. Similarly to the above, it is possible to grasp the remaining life LE of the fan 52 before operation.
- the CPU unit 5A is configured so that the temperature calculation unit 55 includes the temperature estimation data TD-5 indicating the temperature IT in the CPU unit 5A according to the temperature of the CPU 51 and the usage rate of the CPU 51. Since the temperature IT is calculated, the temperature IT inside the CPU unit 5A can be accurately calculated.
- Embodiment 6 FIG. Next, a life prediction apparatus according to Embodiment 6 of the present invention will be described based on FIG. 21 and FIG. 21 and 22, the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
- the CPU unit 5A which is the life prediction apparatus according to the sixth embodiment, performs the temperature estimation data TD-6 stored in the storage unit 53, and the processing in steps ST2-6, ST4-6, and ST5-6 shown in FIG. Are the same as those of the first embodiment except that they are different from those of the first embodiment.
- the temperature estimation data TD-6 is data created by actually measuring the temperature IT inside the casing of the CPU unit 5A, and is stored in the storage unit 53 when the CPU unit 5A is shipped from the factory.
- the usage rate of the CPU 51, the ambient temperature AT, and the internal temperature IT may be totaled, and after the totalization, the CPU 51 may automatically create and store in the storage unit 53.
- the rotation speed of the fan 52 is “6AA1,” “6AA2,” “6AA3,” and the temperature of the CPU 51 is “6AB1,” “6AB2,” “6AB3,” ⁇ but not limited to these.
- the CPU 51 of the CPU unit 5A executes the same processes as in the first embodiment except for the processes in steps ST2-6, ST4-6, and ST5-6.
- the CPU 51 of the CPU unit 5A estimates the temperature of the CPU 51 during debugging, provisional operation, or operation of the control system 1, measures the rotational speed of the fan 52, and stores it in the storage unit 53 (step) ST2-6).
- the CPU 51 of the CPU unit 5A receives the input of the ambient temperature AT via the I / O unit 5B connected to the temperature sensor, and receives the operating time RT input from the input unit 65 (step ST3), and then the storage unit
- the temperature estimation data TD-6 stored in 53 is read out, and the temperature estimation data TD-6 stored in the storage unit 53 corresponds to the ambient temperature AT closest to the ambient temperature AT input from the input unit 65 among the plurality of temperature estimation data TD-6.
- Temperature estimation data TD-6 is selected (step ST4-6).
- the CPU 51 of the CPU unit 5A reads the rotational speed of the fan 52 and the temperature of the CPU 51 stored in the storage unit 53.
- the CPU 51 of the CPU unit 5A calculates the internal temperature IT of the CPU unit 5A based on the read rotation speed of the fan 52, the temperature of the CPU 51, and the selected temperature estimation data TD-6 (step ST5-6). .
- the CPU 51 of the CPU unit 5A reads the fan life data LD and the remaining life data LED (step ST6), and then calculates the remaining life LE of the fan 52 (step ST7).
- the CPU unit 5A includes a storage unit 53 that stores fan life data LD indicating the life of the fan 52 according to temperature.
- the CPU unit 5A includes a temperature calculation unit 55 that calculates a temperature IT inside the CPU unit 5A based on the rotational speed of the fan 52 and the temperature of the CPU 51, and a CPU calculated by the fan life data LD and the temperature calculation unit 55. It functions as a life prediction unit 56 that calculates the remaining life LE of the fan 52 based on the temperature IT inside the unit 5A.
- the CPU unit 5A receives the input from the input unit 65 of the scheduled operating time RT of the control unit 5 when the control system 1 is operating before the control system 1 is operated, thereby enabling the first embodiment. Similarly to the above, it is possible to grasp the remaining life LE of the fan 52 before operation.
- the CPU unit 5A is configured so that the temperature calculation unit 55 uses the temperature estimation data TD-6 indicating the temperature IT inside the CPU unit 5A according to the rotational speed of the fan 52 and the temperature of the CPU 51, to determine the internal state of the CPU unit 5A. Therefore, the temperature IT inside the CPU unit 5A can be accurately calculated.
- the temperature estimation data TD-1, TD-2, TD-3, TD-4, TD-5, TD-6, fan life data LD, and remaining life data LED are stored.
- the present invention is based on temperature estimation data TD-1, TD-2, TD-3, TD-4, TD-5, TD-6, fan life data LD, and remaining life.
- At least a part of the data LED may be stored in a storage medium connected to the network N.
- the storage device of the computer 6 can be used as a storage medium connected to the network N.
- the storage medium connected to the network N is not limited to the storage device of the computer 6.
- the life prediction device for calculating the remaining life LE of the fan 52 is the CPU unit 5A and the central processing unit is the CPU 51 of the CPU unit 5A has been described.
- the life prediction apparatus is not limited to the CPU unit 5A.
- the present invention may be various devices such as the I / O unit 5B of the control unit 5 whose life prediction device is an FA device.
- FIG. 23 Next, a life prediction apparatus 100 according to Embodiment 7 of the present invention will be described based on FIGS. 23, 24, and 25.
- FIG. 23, 24 and 25 the same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
- the life prediction apparatus 100 is configured by a computer 6.
- the computer 6 calculates the lifetime of the fan 52 of the CPU unit 5 ⁇ / b> A of the control unit 5.
- the computer 6 executes a computer program, and as shown in FIG. 24, a CPU 61, a RAM 62, a ROM 63, a storage device 64, an input unit 65, a display device 66, a communication interface 67, including.
- the CPU 61, RAM 62, ROM 63, storage device 64, input unit 65, display device 66, and communication interface 67 are connected to each other via the bus B.
- the CPU 61 executes programs stored in the ROM 63 and the storage device 64 while using the RAM 62 as a work area.
- the program stored in the ROM 63 is BIOS (Basic Input / Output System) or UEFI (Unified Extensible Firmware Interface), but the program stored in the ROM 63 is not limited to BIOS or UEFI.
- the programs stored in the storage device 64 are an operating system program and an engineering tool program. However, the programs stored in the storage device 64 are not limited to the operating system program and the engineering tool program.
- the storage device 64 is an SSD or an HDD, but the storage device 64 is not limited to an SSD or an HDD.
- the input unit 65 receives an operation input from the user and external information.
- the display device 66 displays the remaining life LE of the fan 52 and the like.
- the display device 66 is a liquid crystal display device, but is not limited to a liquid crystal display device.
- the communication interface 67 communicates with the control unit 5 via the network N.
- the functions of the temperature calculation unit 55 and the life prediction unit 56 are realized by the CPU 61 reading out and executing a computer program stored in the storage device 64.
- the computer program is realized by software, firmware, or a combination of software and firmware.
- the function of the storage unit 53 is realized by the storage device 64.
- the function of the user notification unit 54 is realized by the display device 66.
- the CPU 61 of the computer 6 receives at least one of the usage rate of the CPU 51, the temperature of the CPU 51, and the rotational speed of the fan 52 from the CPU unit 5A of the control unit 5 during debugging, temporary operation, or operation of the control system 1-7.
- the control system 1-7 includes a plurality of control units 5, and the CPU 61 of the computer 6 acquires the rotational speed of the fan 52 of the CPU unit 5A of each control unit 5 via the network N. At the same time, the remaining life LE of the fan 52 of the CPU unit 5A of each control unit 5 is calculated.
- the storage device 64 functioning as the storage unit 53 stores the fan life data LD-7 shown in FIG.
- the fan life data LD-7 includes data indicating the life of the fan 52 of the CPU unit 5A of each control unit 5, as shown in FIG. That is, the fan life data LD-7 includes a plurality of data indicating the life of the fan 52.
- the fan life data LD-7 is input from the input unit 65 to the storage unit 53 and stored.
- the computer 6 similarly to any one of the first to sixth embodiments, calculates the temperature IT inside each CPU unit 5A and sets the CPU unit 5A of each control unit 5 in the same manner. The remaining life LE of the fan 52 is calculated.
- the computer 6 includes a storage device 64 that stores fan life data LD-7 indicating the life of the fan 52 according to temperature.
- the CPU 61 calculates a temperature IT inside the CPU unit 5A based on at least one of the usage rate of the CPU 51, the temperature of the CPU 51, and the rotational speed of the fan 52, and fan life data LD. It functions as a life prediction unit 56 that calculates the remaining life LE of the fan 52 based on ⁇ 7 and the temperature IT inside the CPU unit 5A calculated by the temperature calculation unit 55.
- the computer 6 is implemented by receiving an input from the input unit 65 of the scheduled operating time RT of the control unit 5 when the control system 1-7 is operating before the control system 1-7 is operating.
- the remaining life LE of the fan 52 of the CPU unit 5A of each control unit 5 can be grasped before operation.
- the computer 6 calculates the remaining life LE of the fans 52 of the CPU units 5A of the plurality of control units 5, the remaining life LE of the plurality of fans 52 can be grasped.
- the computer 6 constituting the life prediction apparatus 100 creates a control program for the CPU unit 5A of the control unit 5 and transmits it to the CPU unit 5A of the control unit 5.
- the present invention is not limited to this, and a preventive maintenance computer that collects data for preventive maintenance and transmits it to a higher system may be used.
- the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
- 5A CPU unit life prediction device, device provided with fan
- 6 computer 51 CPU (central processing unit), 52 fan, 55 temperature calculation unit, 56 life prediction unit, 65 input unit, 100 life prediction device, IT internal temperature, AT ambient temperature (external temperature), RT operating time, LD, LD-7 fan life data (life data), LE remaining life, TD-1, TD-2, TD-3 temperature estimation data ( (First relation), TD-4, TD-5, TD-6 temperature estimation data (second relation).
Abstract
Description
図1は、実施の形態1に係る寿命予測装置を構成する制御ユニットを備える制御システムの構成を示す図である。制御システム1は、工場の自動化を図るFA(Factory Automation)分野の設備を構成するものであり、図1に示すように、設備に設置される複数の機器2,3,4と、複数の機器2,3,4に接続した制御ユニット5と、制御ユニット5にネットワークNを介して接続したコンピュータ6と、を備える。実施の形態1において、制御システム1は、機器2,3,4を三つ備えるが、三つに限定されない。実施の形態1において、機器2,3,4は、センサ又は駆動機器である。センサとしては、設備に設置される流量、圧力、濃度、又は温度を検出するセンサに限定されない。駆動機器としては、設備に設置されるスイッチ、調整弁、電磁弁、モータ、又はポンプである動作を実行する駆動機器に限定されない。
次に、本発明の実施の形態2に係る寿命予測装置を図13及び図14に基づいて説明する。図13及び図14において、実施の形態1と同一部分には、同一符号を付して説明を省略する。
次に、本発明の実施の形態3に係る寿命予測装置を図15及び図16に基づいて説明する。図15及び図16において、実施の形態1と同一部分には、同一符号を付して説明を省略する。
次に、本発明の実施の形態4に係る寿命予測装置を図17及び図18に基づいて説明する。図17及び図18において、実施の形態1と同一部分には、同一符号を付して説明を省略する。
次に、本発明の実施の形態5に係る寿命予測装置を図19及び図20に基づいて説明する。図19及び図20において、実施の形態1と同一部分には、同一符号を付して説明を省略する。
次に、本発明の実施の形態6に係る寿命予測装置を図21及び図22に基づいて説明する。図21及び図22において、実施の形態1と同一部分には、同一符号を付して説明を省略する。
次に、本発明の実施の形態7に係る寿命予測装置100を図23、図24及び図25に基づいて説明する。図23、図24及び図25において、実施の形態1と同一部分には、同一符号を付して説明を省略する。
Claims (8)
- ファンの寿命予測装置であって、
演算処理をする中央演算処理部の使用率と、前記中央演算処理部の温度と、前記ファンの回転数とのうちの少なくとも一つに基づいて前記ファンが設けられた装置の内部の温度を算出する温度算出部と、
温度に応じた前記ファンの寿命を示す寿命データを記憶した記憶部と、
前記温度算出部が算出した前記内部の温度と、前記寿命データとに基づいて前記ファンの残り寿命を算出する寿命予測部と、
を備えることを特徴とする寿命予測装置。 - 前記寿命データは、温度の変化に応じて、前記ファンの寿命が変化するデータである
ことを特徴とする請求項1に記載の寿命予測装置。 - 前記温度算出部は、前記中央演算処理部の使用率と、前記中央演算処理部の温度と、前記ファンの回転数とのうちの少なくとも一つに加えて、前記ファンが設けられた装置の外部の温度に基づいて、前記内部の温度を算出する
ことを特徴とする請求項1に記載の寿命予測装置。 - 前記寿命予測部は、前記温度算出部が算出した前記内部の温度における前記ファンの寿命を前記寿命データに基づいて算出し、算出したファンの寿命に対する前記ファンが設けられた装置の稼働時間の割合を算出する
ことを特徴とする請求項1から請求項3のうちいずれか一項に記載の寿命予測装置。 - 前記寿命予測部は、前記ファンの寿命に対する前記ファンが設けられた装置の稼働時間の割合を用いて、前記ファンの残り寿命を算出する
ことを特徴とする請求項4に記載の寿命予測装置。 - 前記記憶部は、前記中央演算処理部の使用率毎に定められた前記外部の温度と前記内部の温度との関係を示す第1の関係を少なくとも一つ記憶し、
前記温度算出部は、前記中央演算処理部の使用率と、前記外部の温度と、前記第1の関係とに基づいて、前記内部の温度を算出する
ことを特徴とする請求項3に記載の寿命予測装置。 - 前記記憶部は、前記中央演算処理部の使用率と前記ファンの回転数とに応じた前記内部の温度を示す第2の関係を記憶し、
前記温度算出部は、前記中央演算処理部の使用率と、前記ファンの回転数と、前記第2の関係とに基づいて、前記内部の温度を算出する
ことを特徴とする請求項1に記載の寿命予測装置。 - 前記寿命データを前記記憶部に入力する入力部を備える
ことを特徴とする請求項1に記載の寿命予測装置。
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