JP2002287822A - Method and device for preparing timing chart - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record the operating state of an actuator and to easily prepare a timing chart of the whole system on the basis of this record. SOLUTION: Count values when inputting detection signals of an initial position detecting sensor 58 and an operating position detecting sensor 60 from each actuator are read and sent to a sequence data originating part 100. Actuator identification marks are inputted to the sequence data originating part 100. The identification marks and count values of the actuator are recorded in time sequence in the sequence data originating part 100, and operation sequence is printed out by the operation of a print instructing part 102.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timing chart based on actual operation of each actuator which is used in an automatic control operation system using a plurality of actuators each having a drive source and operates by a pre-programmed sequence control. The present invention relates to a method and apparatus for creating a timing chart.

[0002]

2. Description of the Related Art
The control of the induction motor etc. in the automatic control work system uses the magnet contact,
In recent years, control by an inverter or the like has been increasing.

For example, in inverter control, a control signal is received from a sequencer programmed in advance. Thereby, the induction motor is driven based on the control signal from the sequencer.

[0004] Here, in an actuator using an induction motor as a drive source, a malfunction may occur for some reason. Therefore, it is necessary to periodically execute a failure diagnosis for diagnosing an operation state.

[0005] However, in this periodic inspection, in a system configured by incorporating a large number of actuators,
Inspection is not perfect, and often notices only after a breakdown. For this reason, the worst situation such that the entire system is completely stopped for a long time due to the failure is caused, and quick failure diagnosis is desired.

It is very effective to look at the operation timing chart of each part for quick failure diagnosis and cycle time analysis as described above.

However, in order to obtain an operation timing chart, it is necessary to purchase a dedicated terminal or a recorder (hardware) for obtaining the operation dimming chart from a manufacturer or to create software in place of this.

[0008] In this case, a dedicated terminal and a recorder are costly. Further, it is necessary to create monitoring software exclusively for each automatic control work system to be applied, and the software is unavoidably changed every time this system is improved, and the work becomes complicated.

Further, in the conventional operation timing chart creation, since the timer element is frequently used, the load on the CPU increases, and the control efficiency decreases.

In view of the above facts, the present invention can record the operation state of an actuator, and can easily prepare a timing chart for the entire system based on this recording. And a device.

Another object of the present invention is to provide a method and apparatus for creating a timing chart by sequence control that can reduce the burden on the CPU due to heavy use of timer elements when creating a timing chart.

[0012]

The invention according to claim 1 is used in an automatic control operation system using a plurality of actuators each having a drive source, and each actuator operated by a pre-programmed sequence control. A timing chart creation method for creating a timing chart based on actual operation, wherein a moving body operated by the driving source starts an initial position and reaches a working position that achieves a function as the actuator. It is characterized in that time is measured, and the measured time is recorded in chronological order together with an identification code for identifying the actuator in accordance with the operation of the sequence control.

According to the first aspect of the present invention, the time when the moving body of the actuator moves to the initial position and the time when it reaches the operation position are measured and stored in a time series. At this time, the identification code of the actuator is also stored in order to identify the operated moving body.

Thus, the time-series time data created by a series of operations can be used as a timing chart without using any special hardware or software.

By performing an operation analysis and a cycle time analysis at the time of a failure based on the created timing chart, it is possible to find the failure early.

According to the second aspect of the present invention, there is provided a timing chart based on actual operation of each actuator which is used in an automatic control operation system using a plurality of actuators each having a drive source and operates by a pre-programmed sequence control. A timing chart creation device that creates a first position detection sensor that detects an initial position of a moving body operated by the driving source, and achieves a function of the moving body operated by the driving source as the actuator. A second position detection sensor that detects an operation position, a specification unit that specifies an actuator corresponding to a moving object in operation, and a first position detection sensor and a second position detection sensor in the operation actuator. Time measuring means for measuring the position detection time of the vehicle, and the time measured by the time measuring means. , And a recording means for recording in a time series with the actuator specified at the specifying means.

According to the second aspect of the present invention, the first position detecting sensor is disposed at the initial position of the moving body of the actuator, and the second position detecting sensor is disposed at the operating position of the moving body. Detects this moving object when has moved.

Here, the specifying means specifies the operating actuator, and measures the time when the timing means detects the movement of the moving body to the initial position and the operating position of the moving body.

The recording means records the time measured by the time measuring means in a time series together with the actuator specified by the specifying means.

After the end of a series of operations, the data list recorded in the recording means has operation timings in accordance with the operation of the operation, and this is used as an operation timing chart to perform operation for failure diagnosis. It can be applied to analysis and cycle time analysis.

According to a third aspect of the present invention, in the second aspect of the present invention, the timing means includes a counter which repeats a predetermined number of count values in a loop,
Count value reading means for reading the count value of the counter at the time of each position detection of the position detection sensor and the second position detection sensor, and conversion means for converting the count value read by the count value reading means into time. It is characterized by being constituted.

According to the third aspect of the present invention, the first position detecting sensor is disposed at the initial position of the moving body of the actuator, and the second position detecting sensor is disposed at the operating position of the moving body. Detects this moving object when has moved.

On the other hand, the counter has a predetermined number of count values, for example, starting from 00000 and resetting at 99999.
Return to 0 and continue counting forever (loop counter). The number of digits is not limited.

As described above, by using a loop counter, only one counter is required for a plurality of actuators, and a timer element is not required for each actuator, thereby reducing the load on the CPU. .

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present embodiment will be described below with reference to FIGS.

FIG. 1 shows a control device system 53 incorporating a plurality of actuators (FIG. 1 shows a first actuator 50 and a second actuator 52).

The first actuator 50 is configured by using an induction motor 54 as a drive source. An arm 56 is attached to the rotating shaft 54A of the motor 54 as a moving body, and an operation state of achieving the function as this moving body from an initial position (horizontal state shown by a solid line in FIG. 6) (vertical state shown by a chain line in FIG. 6). ) Is rotated by approximately 90 °.

An initial position detection sensor 58 and an operation position detection sensor 60 are provided at the initial position and the operation position, respectively. The arrival of the arm 56 at the initial position and the operation position is detected by reversing the signal. You can do it.

The second actuator 52 includes a cylinder 6
2 as a drive source. In the cylinder 62,
An electromagnetic valve 63 is provided. By changing the introduction of the pressurized medium into the pressurized medium chamber in the cylinder 62 by the operation of the electromagnetic valve 63, the telescopic rod 62A can be expanded and contracted. Note that air, oil, or the like can be used as the pressurized medium.

A rectangular block 64 is attached to the telescopic rod 62A of the cylinder 62 as a moving body, and an operation state of achieving the function as the moving body from an initial position (the retracted state of the telescopic rod 62A shown by a solid line in FIG. 1). It is configured to linearly move to an extended state of the telescopic rod 62A shown by a chain line in FIG.

An initial position detection sensor 58 and an operation position detection sensor 60 are provided at the initial position and the operation position, respectively. The arrival of the rectangular block 64 at the initial position and the operation position is detected by an inversion signal. Can be done.

An initial position detecting sensor 58 and an operating position detecting sensor 60 provided on each of the first actuator 50 and the second actuator 52 are connected to a controller 66, respectively. Further, drivers (inverters and the like) 68 and 70 for operating the motor 54 and the solenoid valve 63 are connected to the controller 66.

FIG. 2 shows an arm 56 and a rectangular block 64 provided inside the controller 66 and using the initial position detection sensor 58 and the operation position detection sensor 60.
Is a block diagram of a monitoring device 72 that monitors the moving state of a moving object including a moving object.

The monitoring device 72 is provided with a single clock generator 74, and a clock signal from the clock generator 74 is input to a counter 76.

The counter 76 has a value from 00000 to 9999.
The count up to 9 is counted up in one second of 0.1 second. When the count reaches 99999, the count returns to 00000 and the count up is continued.

In the monitoring device 72, the first actuator 50 is the actuator 1 and the second actuator 52 is the actuator 2, and the count value reading sections corresponding to the N actuators (actuators N) are included. 78 (1) to 78 (N) are provided.

The count value of the counter 76 is input to each of the count value reading units 78 (1) to 78 (N). Further, the count value reading section 78 (1)
The initial position detection sensor 58 and the operation position detection sensor 60 from each actuator are respectively input to .about.78 (N), and the count value at the time of input of the detection signal input from each sensor is read. The value is sent to the sequence data creation unit 100. An actuator identification code for identifying the calculated actuator is input to the sequence data creation unit 100.

In the sequence data creating section 100, the identification symbol of the actuator and the count value are recorded in time series. The recorded data is obtained by operating the print instruction unit 102.
The data is sent to the printer driver 104, and the data is printed out on a predetermined print sheet 108 by the printer 106. As shown in FIG. 3, the actual operation sequence is printed in a tabular form on the print paper 108 printed out by the printer 106, and the process number (No.) and the actuator ID ( (Identification symbol), the type of drive source of the actuator (here, the motor and cylinder are shown), the position (initial position or operating position), and the count value.

The operation of the present embodiment will be described below.

When the actuator (for example, the first actuator 50) starts operating, first, the signal of the initial position detection sensor 58 is inverted. The count value at this time is read and set as C1.

On the other hand, when the moving body of the first actuator 50 (the arm 56 in the case of the first actuator 50 in FIG. 6) moves and comes to the operation position, the signal of the operation position detection sensor 60 is inverted. The count value at this time is read and set as C2.

The sequence data creating section 100 records the read count values C1 and C2 in the reading order, that is, in chronological order. At this time, the actuator corresponding to the read count value is specified, and is recorded together with an identification code for identifying the actuator.

When the data created by the sequence data creation unit 100 is printed after the end of a series of operations,
The user operates the print instruction unit 102. By operating the print instruction unit 102, the data is transferred to the printer driver 10
4 and the print paper 1
08 is printed out.

The result of printing by the printer 106 (contents to be printed on the printing paper 108) is in a table format as shown in FIG. That is, the operation order is from the top. It can be seen that the cylinder serving as the drive source of the actuator No. 1 (identification code 001-003) starts the initial position with the count 22153, and then reaches the operation position with the count value 22164. Also, in the next step No. Looking at the count value when the initial position of the motor which is the drive source of the actuator 1 (identification code 001-004) is started, 22164
It can be seen that the operation is started when the cylinder reaches the operation position. Further, at the same time as this motor, the process No. It can be seen that the motor serving as the drive source for the actuator 1 (identification code 001-005) has also started its initial position.

By looking at the count value, the operation state of each actuator and the synchronization and cooperation state of a plurality of actuators can be seen at a glance, and can be used as a timing chart.

In the present embodiment, the data created by the sequence data creating unit 100 is stored in the print paper 108.
When the printout is performed in the form of a table shown in ascending order in chronological order, the printout may be performed in the form of a timing chart as shown in FIG. Further, both the table format and the timing chart format may be printed, or the print may be selectively performed.

In this embodiment, the printer 106
Is connected, but may be used as a display unit. Also, the printer 1
06 and the display unit may be provided side by side.

According to the present embodiment, a counter 76 to which a single timer (clock generator 74) is connected is used.
The count value at the time of input of the inversion signal from the initial position detection sensor 58 and the operation position detection sensor 60 provided in each of the plurality of actuators is read, and the time between them is obtained by calculation. Often, the load on the CPU can be reduced.

Further, a timing chart for a series of operations can be easily created only by recording the count values read from this counter in chronological order. Therefore, dedicated hardware and software for creating the timing chart are provided. Is unnecessary, and the present invention can be applied as a highly versatile and simple timing chart automatic creation device.

[0050]

As described above, the present invention has an excellent effect that the operation state of the actuator can be recorded, and a timing chart of the entire system can be easily created based on this recording.

Further, in addition to the above object, there is an effect that the burden on the CPU due to heavy use of the timer element can be reduced when the timing chart is created.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a control device system according to the present embodiment.

FIG. 2 is a control block diagram of the monitoring device according to the present embodiment.

FIG. 3 is a front view showing data printed out by the printer according to the embodiment.

FIG. 4 is a front view showing data printed out by a printer in a modified example.

[Explanation of symbols]

 Reference Signs List 50 first actuator 52 second actuator 53 control device system 54 induction motor 56 arm 58 initial position detection sensor 60 action position detection sensor 62 cylinder 62A telescopic rod 63 solenoid valve 64 rectangular block 66 controller 68 driver 70 driver 72 monitoring device 74 Clock generator 76 Counter 78 Count value reading unit (1) to (N) 100 Sequence data creation unit 102 Print instruction unit 104 Printer driver 106 Printer

Continued on the front page F term (reference) 5H223 AA15 CC03 EE05 FF08

Claims (3)

[Claims] 1. A timing chart creating method for creating a timing chart based on actual operation of each actuator that is used in an automatic control operation system using a plurality of actuators each having a drive source and operates by a sequence control programmed in advance. And measuring the time when the moving body operated by the driving source starts the initial position and when the moving body reaches the operation position that achieves the function as the actuator, and sequentially performs the sequence control operation. A method for creating a timing chart, characterized in that the measured time is recorded in chronological order together with an identification code for identifying the actuator. 2. A timing chart creating apparatus used in an automatic control work system using a plurality of actuators each having a drive source and creating a timing chart based on actual operation of each actuator operated by a sequence control programmed in advance. A first position detection sensor for detecting an initial position of a moving body operated by the driving source, and a first position detecting sensor for detecting an operation position of the moving body operated by the driving source, which achieves a function as the actuator. 2 position detecting sensor, specifying means for specifying an actuator corresponding to the moving object in operation, and measuring the position detection time of each of the first position detecting sensor and the second position detecting sensor in the operating actuator. Time measuring means, and the time measured by the time measuring means, Recording means for recording in a time series with boss was actuators,
A timing chart creation device having the following. 3. The counter according to claim 1, wherein the counting means repeats a predetermined number of count values in a loop, and count values of the counters at the time of each position detection of the first position detection sensor and the second position detection sensor. 3. A timing chart creation device according to claim 2, further comprising: a count value reading means for reading the count value.