JP3449016B2 - Machine information analysis equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information collecting device for measuring the progress of the input / output state of each input / output device of the mechanical device which changes with the operation of the mechanical device, and an input device measured by this information collecting device. The present invention relates to an information analysis device of a mechanical device configured by an information processing device that transfers information about the progress of an output state, analyzes the information in an identifiable state such as a graph display, and outputs.

[0002]

2. Description of the Related Art Conventionally, an output element such as an actuator for operating a movable portion of a mechanical device and an input element such as a limit switch for detecting an operating state of the movable portion are provided, and the output element is controlled according to the state of the input element. There is a device that operates a mechanical device and stores the operating state of the input / output elements of such a device, and the state of the input element changes even when each input / output element does not perform a predetermined operation or after a predetermined time elapses. If not, the failure determination is made to determine the failure.

Then, the number of failures and the failure time are measured from the states of the input / output elements when the failure is judged by these failure judgments, and the measured number of failures and the failure time are graphed at the request of the operator. An apparatus for collectively displaying on a CRT etc. is described in JP-A-3-80308. In such an apparatus, an information collecting apparatus that measures information and an information processing apparatus that analyzes and outputs the information in an identifiable state such as a graph display are provided separately due to the processing capability of each apparatus. When the operator requests the information output from the worker, the apparatus requests the information collecting apparatus to transfer the information, and accordingly, the information processing apparatus transfers the information measured up to now to the information processing apparatus.

[0004]

However, when the information processing apparatus transfers the information measured up to the present time by the transfer request of the information processing apparatus, the state of the input / output element is monitored during the transfer. There is a problem with the reliability of information because the state of elements changes during transfer. Therefore, the present invention aims to improve the reliability of transfer information.

[0005]

Means for Solving the Problems The present invention is intended to be made in order to achieve the object, in the invention of claim 1, double
An information collecting device provided in each of the several mechanical devices, and a current measurement information storage area for storing the progress of the input / output state of each input / output device for a predetermined period, and transferring from the information collecting device to the information processing device. and transfer the measurement information storage region for storing transfer information, the is obtained information about the current measurement information storage region and an information updating means for replacing the transfer measurement information storage area when the predetermined period of time has elapsed.

Further, in the invention of claim 2, when the information updating means makes a transfer request during the predetermined period, the information in the transfer measurement information storage area is transferred to the information processing device, and then the current measurement is performed. An information copying means for copying the information in the information storage area to the transfer measurement information storage area is provided.

[0007]

According to the first aspect of the present invention, the information measured within the predetermined time from the start to the end of the measurement is temporarily stored in the current measurement information storage area until the end of the measurement, and the information is updated at the end of the measurement. The present measurement information storage area is replaced by the transfer measurement information storage area by means.

Since the information stored in the transfer measurement information storage area is transferred to the information collecting device, the information does not change during the transfer. In the invention of claim 2,
When a transfer request is made within a predetermined period, the information in the current measurement information storage area is copied to the transfer measurement information storage area by the information copying means. It is stored in the transfer measurement information storage area as transfer information.

[0009]

EXAMPLES The present invention will be described below based on specific examples. FIG. 1 shows the configuration of a transfer machine controlled by a plurality of programmable sequence controllers (PC) PC01 to PC32. The stations ST0, ST1L, ST1R, ... ST3R of the transfer machine are controlled by corresponding PCPC01-PC32, respectively, as shown in the drawing, and the PCPC01-PC32 are connected to each other by a link line L. In addition, each station ST0, ST1L, ST1
R, ... ST3R have mechanical devices M1,
11M ... 32M are provided.

As shown in FIG. 2, the PC 01 stores a CPU 20 for sequence control and communication control, a sequence control program (object program) and link parameters, and a state of input / output elements to be controlled and It has a RAM 25 for storing the state of the link element received from the link line, and a ROM 21 in which a program for processing execution of the CPU 20 is stored. Input / output element 270
1, 2702, etc. are connected to the CPU 20 via the drive circuit 27 and the input / output interface 24. RAM
25, an input element state memory 251 and an output element state memory 252 that store the states of input / output elements, an internal relay memory 253, a link element memory 254, a link parameter memory 255, and a sequence control program memory 256.
Are formed.

In the RAM 25, addresses 0000 to 1FFF are memories assigned to the input / output elements belonging to the own PC, and the states of these input / output elements can be determined by referring to the contents of this address. Also, from address 3000
The 3FFF address is an address commonly assigned to all input / output elements referenced by other PCs in all PCs. Virtual input / output elements assigned to this common address are called link elements, and addresses 3000 to 3FFF are called link element memories.

When all the PCs are connected to the link line L and all the PCs are activated, the value of the link element memory 254 is always common to all the PCs due to the communication control of a minute time interval. It is a value. Therefore, when referring to the input / output element states of another PC in one PC, the value of the link element memory 254 is referred to.

In each PC, a sequence control program is created according to the ladder circuit diagram shown in FIG. In the ladder circuit diagram of FIG. 3, input elements are contacts such as relays and limit switches, and output elements are relay coils. Input and output elements are collectively called input / output elements. Further, if the predetermined input / output elements are not turned on / off in a predetermined order in each PC, or if the input / output elements are not turned on / off even after a predetermined time elapses, the mechanical devices M1, 11M, ... 1 is set as the abnormality flag in the element memory 254.

An information collecting device 50 is connected to the PC 01 as shown in FIG. This information collecting device 50
The number of ON / OFF times of the value of the link element memory 254 of the PC 01 within a predetermined time and the cumulative time of ON / OFF are measured, and as shown in FIG. 4, the ROM 51, the RAM 52, and the CPU 5
3 and a timer 54. The ROM 51 stores a program for information collection processing executed by the CPU 53, and the RAM 52 stores a current measurement information storage area 150 in which information currently being measured is stored.
A transfer measurement information storage area 151 for storing measurement information to be transferred in response to a request from the information processing device 60 described later,
A previous transfer information storage area 152 for storing the information transferred to the information processing device 60 the previous time is formed.

This current measurement information storage area 150 is a PC0
A storage area corresponding to each state (on / off state) of one link element is provided, and the number of times the state is changed and the duration of the state are recorded as cumulative time. For example, when the state of a link element changes from 1 to 0 (on to off) when the on state is set to 1 and the off state is set to 0, the column of the number of 0 (off state) of this corresponding link element is shown. While 1 is added to the storage area 3000, the time until the state is changed is recorded in the 1 column of the link element indicating the state of the link element before the change.

Information stored in the transfer measurement information storage area 151 and the previous transfer information storage area 152 other than the current measurement information storage area 150 is the current measurement information storage area 150.
And the structure is the same. Further, an information processing device 60 is connected to the information collecting device 50. As shown in FIG. 5, a plurality of information collecting devices 50n for collecting information of transfer machines equivalent to the transfer machines controlled by PCPC01 to PC32 are connected to the information processing device 60, and each transfer machine is operated by an operator. This situation is output to the CRT 61 and the printer 66 which will be described later.

As shown in FIG. 5, the information processing apparatus 60 has a CRT 61 and a printer 66 for displaying various information, a keyboard 62 operated by an operator, and the CRT 61 for displaying various information by operating the keyboard 62.
And the information collecting device 5 for making the output possible to the CPU 63
RAM 64 for storing information from 0, and this RAM 64
The ROM 65 stores a program showing a series of procedures for creating various kinds of information based on the information stored in.

The operation of the information collecting apparatus 50 having the above configuration will be described with reference to the flowchart of FIG.
This flowchart is repeatedly executed as soon as the information collecting device 50 is powered on. First,
In step 100, it is determined whether or not there is a request for information transfer from the information processing device 60. If there is no transfer request, the process proceeds to step 102, and if there is a transfer request, the process proceeds to step 104.

In step 102, it is judged whether or not the time to start the data measurement process has been exceeded. If it has exceeded the time, the process proceeds to step 106, and if it has not exceeded, the process returns to step 100. In step 106, the measurement process is performed and the number of changes in the state of the link element of the PC 01 and the duration of the state are recorded in the current measurement information storage area 150 as the accumulated time, and the process proceeds to step 108.

In step 108, it is determined whether or not the measurement end time has been reached. If the measurement end time has not been reached, the process returns to step 100, and if the measurement end time has been reached, the process proceeds to step 110. Step 110
In the above, the information currently stored in the measurement information storage area 150 is used as the transfer measurement information in the transfer measurement information storage area 1
In step 112, the information stored in the transfer measurement information storage area 151 is stored in the previous transfer information storage area 152, the current measurement information storage area 150 is cleared in step 114, and the process returns to step 100.

On the other hand, when it is determined in step 100 that there is a request for information transfer from the information processing device 60, and the process proceeds to step 104, the information stored in the transfer measurement information storage area 151 is transferred to the information processing device 60 and then step 11
6, the information in the transfer measurement information storage area 151 is replaced with the previous transfer information storage area 152 in step 116, and the information currently stored in the measurement information storage area 150 is transferred and measured as the transfer measurement information in step 118. Copies to the information storage area 151. Then, the process returns from step 118 to step 100.

The flow of information in the current measurement information storage area 150, the transfer measurement information storage area 151, and the previous transfer information storage area 152 will be described with reference to FIG.
When the measurement is started in the
The state of the link element of No. 1 is monitored, and when there is a change in each address of the link element, the time until the state changes in the link element column showing the state of the link element before the change in the current measurement information storage area 150. To record. Here, this recorded information is D1.

At the measurement end time t2, the information D1 currently stored in the measurement information storage area 150 is copied to the transfer measurement information storage area 151, and the transfer information stored in the transfer measurement information storage area 151 is copied to the previous time. The transfer information is previously stored in the transfer information storage area 152, and the current measurement information storage area 150 is cleared. Further, at the next measurement start time t3, the state of the link element of PC01 is started to be monitored. The information recorded here is D2.

Further, at time t4, the information processing device 60
When there is an information transfer request from the information processing device 60, the information D1 stored in the transfer measurement information storage area 151 is measured from the time t1 to the time t2 and is transferred to the information processing device 60. At the same time, the information D1 is measured from the time t3 to the time t4. The information D2 is copied from the current measurement information storage area 150 to the transfer measurement information storage area 151, and the current measurement information storage area 150 starts measurement from time t4 to the information D2 measured from time t3 to time t4.

As described above, when a data transfer request is made, the data is not changed during the transfer. In the above description, the measurement start time t1 to the measurement end time t2 are the working hours of the worker.
Next, the operation of the information processing device 60 will be described. Normal,
The input from the keyboard 62 is monitored, and when there is an input from the keyboard 62, a request from the keyboard 62 causes, for example, the number of stops for each machine and the number of stops for each cause shown in FIG. RA that stores information
The graph is edited based on M64 and displayed on the CRT 61 or printed on the printer 66.

[0026]

As described above, according to the invention of claim 1, the information within the predetermined time is stored in the current measurement information storage area, and the information in the current measurement information storage area is replaced with the transfer information storage area at the end of the predetermined time, When the transfer request is from the information processing device, the information in the transfer information storage area is transferred, so that the information is not updated during the transfer and the reliability of the information can be improved. .

According to the second aspect of the present invention, when a transfer request is issued from the information processing device within a predetermined time during which measurement is performed, the information in the current measurement information storage area is copied to the transfer measurement information storage area. Therefore, there is an advantage that the information from the start of measurement to the time when a transfer request is made is stored in the transfer measurement information storage area as the next transfer information, and the latest information that does not change can be transferred. .

[Brief description of drawings]

FIG. 1 is a diagram showing a transfer line according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a sequence controller.

FIG. 3 is a ladder diagram of a sequence program.

FIG. 4 is a diagram showing a configuration of an information collecting device.

FIG. 5 is a diagram showing a configuration of an information processing device.

FIG. 6 is a flowchart showing the operation of the information collecting device.

FIG. 7 is a diagram showing a flow of information in each storage area.

FIG. 8 shows an example of a graph output from the information processing device.

[Explanation of symbols]

50 Information gathering device 60 Information processing equipment 150 current measurement information storage area 151 Transfer measurement information storage area 152 Previous transfer measurement information storage area PC01 Sequence controller

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Claims (2)

(57) [Claims] 1. An information collecting device which is provided in each of a plurality of mechanical devices, and which measures the progress of the input / output state of each input / output device of the mechanical device which changes with the operation of the mechanical device. ,
In an information analysis device of a mechanical device configured by an information processing device that transfers information on the progress of the input / output state measured by these plural information collection devices, analyzes and outputs it in an identifiable state such as a graph display, etc. the information collection apparatus, transfers the measurement of storing the current measurement information storage area for storing the course of input and output states of the input-output device for a predetermined period, the transfer information to be transferred from the information collecting device to the information processing apparatus an information storage area, the information analysis device of the machinery, characterized in that it comprises an information updating means for replacing the information of the current measurement information storage region to the transfer measurement information storage area when the predetermined period of time has elapsed. 2. The information updating means transfers the information in the transfer measurement information storage area to the information processing device when a transfer request is made during the predetermined period, and then the information in the current measurement information storage area is transferred. The information analysis device for a mechanical device according to claim 1, further comprising an information copying means for copying to the transfer measurement information storage area .