JPH11184518A - Fault monitoring system for production system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fault monitoring system with which measures or shortening fault standstill time can be appropriately checked corresponding to a factor. SOLUTION: This system is provided with a fault detecting part (fault detecting means) 4 for detecting the occurrence of any fault in a production system 1, control part (recovery detecting means) 2 for detecting the recovery of the production system 1 from a fault state and the restart of production, and infrared sensor (existence detecting means) 3 for human detection for detecting the existence of a human being inside a detection range 9. A clock (time measuring means) 5 individually sets time from the detection of the fault in the production system 1 to the visit of an operator 10 and time for repair.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fault monitoring system for a production apparatus for measuring a failure stop time of the production apparatus.

[0002]

2. Description of the Related Art In general, an operator who maintains a production device usually takes charge of a plurality of devices, so that it takes a long time from the occurrence of a failure until coming to the device and starting repair. Therefore, the failure stop time is the time from when the equipment stops due to a failure until the operator notices the failure and comes in front of the equipment to start the repair, and the time from the start of repair to the restart of the equipment. Become sum.

[0003] As a measure for shortening the failure stop time, there are a method of reducing the time from the occurrence of a failure until the operator runs to the front of the device and a method of reducing the time of repair. It measures only the time from shutdown to the time the operator repairs and restarts the equipment.

[0004]

However, in the above-described conventional method of measuring the stop time of a failure, it is not possible to separately measure the time until the operator rushes and the time for repair when a failure occurs in the apparatus. For this reason, there has been a problem in that measures for shortening the failure stop time cannot be appropriately considered according to the factors.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and a fault monitoring system for a production apparatus capable of examining measures for shortening a fault stop time according to factors. The purpose is to provide.

[0006]

SUMMARY OF THE INVENTION A fault monitoring system for a production apparatus according to the present invention is configured as follows.

(1) Failure detection means for detecting the occurrence of a failure in the production apparatus, recovery detection means for detecting that the production apparatus has recovered from the failure and has resumed production, and detects the presence of a person around the production apparatus. Presence detecting means for detecting, a time from when the occurrence of the failure of the production device is detected to a time when the presence of a person is detected around the production device, and a time period after the presence of the person is detected around the production device; And time measuring means for individually measuring the time until the apparatus is restored and the production is resumed.

(2) In the fault monitoring system for a production device of the above (1), the presence detecting means detects the signal from the signal response means of the specific worker so that the specific worker can operate the production device. It is now detected that it exists in the surrounding area.

[0009]

(First Embodiment) FIG. 1 is a block diagram showing the configuration of a fault monitoring system for a production apparatus according to a first embodiment of the present invention. In the figure, 1 is a production device, 2
Is a control unit that controls various operations of the production apparatus 1, 3 is a human detection infrared sensor (presence detection means) that detects the presence of a person around the production apparatus 1, 4 is a failure detection that detects a failure of the production apparatus 1 (Failure detecting means).

Reference numeral 5 denotes the time from when a failure of the production device 1 is detected to when the presence of a person is detected in the detection range 9 of the infrared sensor 3 for detecting a person, and when the presence of the person is detected, the production device 1 returns. A clock (time measuring means) for individually measuring the time until the production is resumed, and a storage area 6 for storing the time measured by the clock 4 and the like.

Reference numeral 7 denotes a display device, 8 denotes an operation panel, and 10 denotes an operator.

In the storage area 5, variables A, B, C,
D, E, and F. The clock 4 and the storage area 5 are configured to operate even when the production device 1 is stopped.

In the above configuration, the control unit 2 controls the production device 1
Constitutes a recovery detecting means for detecting that the device has returned from the failure state and has resumed production.

Next, the operation will be described with reference to the flowchart of FIG. First, in step S101, when the failure detection unit 4 detects a failure in the production device 1, the control unit 2 stops the production device 1, displays an alarm on the display device 7 in step S102, and displays the current time from a clock in step S103. The data is read out and stored in the variable A of the storage area 6. That is, the failure occurrence time is stored in the variable A.

Next, in step S104, the process waits for an input from the infrared sensor 3 for human detection. When the operator 10 notices the alarm and comes in front of the production device 1 and enters the detection range 9 of the infrared sensor 3 for human detection, the process proceeds to step S105, and the current time is stored in the variables B and C of the storage area 6. That is, the operator arrival time is stored in the variables B and C.

Next, in step S106, it is determined whether or not the production apparatus 1 has been restarted. If not, it is determined in step S107 whether or not the operator 10 is in the detection range 9, and if it is within the detection range. , Step S1
At 08, the current time is stored in the variable C, and the process returns to step S106.

When the operator goes out of the detection range, the process proceeds from step S107 to step S109, where it is determined whether or not the time difference between the current time and the variable C is equal to or less than a value set in advance for the variable D. The process returns to step S106, but returns to step S104 if not less than the set value. That is, if the operator leaves the apparatus for a time longer than the time set in the variable D, the variable B, which is the operator arrival time, is measured again.

When the operator repairs the malfunction and restarts the production apparatus 1 using the operation panel 8, the process proceeds to step S110, where the time difference between the variables A and B is added to the variable E, and the variable B is added to the variable F in step S111. And the time difference between the variables C and C, and the alarm display is deleted in step S112.

According to the operation described above, the time from the occurrence of a failure to the arrival of the operator is accumulated in the variable E, that is, the accumulated operator waiting time is recorded, and the accumulated time from the arrival of the operator to the restart of the apparatus is recorded in the variable F. ,
That is, the cumulative repair time is recorded.

Further, even if the operator arrives, the arrival of the operator can be detected again if the operator leaves the apparatus for a certain period of time. As a result, when an operator passes in front of the device, it is not considered as an operator arrival, and
If you leave the device for a short period of time, such as when you go to get tools during repair, you can measure the repair time during that time. The operator 10 can display the variable E, that is, the accumulated operator waiting time and the variable F, that is, the accumulated repair time, of the storage area 6 on the display device 7 by giving an instruction from the operation panel 8.

The operator 10 can reset the values of the cumulative operator waiting time and the cumulative repair time to 0 by giving an instruction from the operation panel 8. The cumulative operator waiting time and the cumulative repair time for an arbitrary period can be measured depending on the reset time.

When it is desired to measure the cumulative operator waiting time and the cumulative repair time for each type of fault, the cumulative operator waiting time and the cumulative repair time are provided in the storage area 6 for each type of fault, and the fault detected by each fault detector is detected. Repair time and operator wait time may be added for each type.

If it is desired to view the cumulative operator waiting time and the cumulative repair time of a plurality of production devices at one place, a display computer is provided, the computer and the production device are connected by communication means, and the storage area of the production device is allocated. The function of reading out and displaying by communication may be provided in the computer.

As described above, in the present embodiment, the time from when the failure of the production device 1 is detected until the presence of a person around the production device 1 is detected, and the presence of a person around the production device 1 is detected. And the time from when the production apparatus 1 returns to when it is detected that the production has been resumed is individually measured. Therefore, measures for shortening the failure stop time are appropriately examined according to the factors. be able to.

(Second Embodiment) FIG. 3 is a block diagram showing a configuration of a fault monitoring system for a production apparatus according to a second embodiment of the present invention. In the figure, 52 is a control unit that controls various operations of the production device 51, 54 is a failure detection unit that detects a failure of the production device 51, and 55 is within a detection range 59 after the failure of the production device 51 is detected. A clock 56 for individually measuring the time until the presence of a person is detected and the time from when the presence of the person is detected until the production device 51 resumes production;
Is a storage area for storing the time measured by the clock 55, 57 is a display device, 58 is an operation panel, and 60 is an operator.

Here, in the present embodiment, unlike the first embodiment, the tag (signal response means) 6 of the operator is provided.
1 transmits a response signal when receiving a call signal of the tag detection device (presence detection means) 53, and sends a signal to the control unit 52 when the tag detection device 53 detects the response signal. Thereby, the control unit 52 can know whether the tag 61 is in the detection range 59 of the tag detection device 53 or not.

The description of the operation of this embodiment is omitted because the infrared sensor in the description of the operation of the first embodiment may be replaced with a tag detection device.

As described above, in this embodiment, only the operator having the tag is detected for the cumulative operator waiting time and the cumulative repair time. Therefore, even if a person other than the operator approaches the apparatus, the accumulated operator waiting time and the accumulated repair time can be measured without errors.

[0029]

As described above, according to the present invention,
Failure detection means for detecting the occurrence of a failure in the production device, return detection means for detecting that the production device has recovered from the failure and has resumed production, and presence detection means for detecting the presence of a person around the production device. The time from when the failure of the production device is detected until the presence of a person around the production device is detected, and when the presence of the person around the production device is detected, the production device returns to And a time measuring means for individually measuring the time until the operation is restarted, so that there is an effect that measures for shortening the failure stop time can be appropriately considered according to the factors.

Further, the presence detecting means detects the presence of the specific worker in the vicinity of the production apparatus by detecting a signal from the signal responding means of the specific worker. Even if a person approaches the production equipment, the waiting time and repair time of the operator can be measured without error.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a fault monitoring system for a production apparatus according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing a measurement operation of a failure stop time according to the first embodiment;

FIG. 3 is a block diagram illustrating a configuration of a fault monitoring system for a production device according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Production apparatus 2 Control part (return detection means) 3 Infrared sensor for person detection (presence detection means) 4 Failure detection part (failure detection means) 5 Clock (time measurement means) 10 Operator 53 Tag detection apparatus (presence detection means) 61 Tag (signal response means)

Claims (2)

[Claims] 1. A failure detecting means for detecting occurrence of a failure in a production device, a return detection means for detecting that the production device has recovered from a failure and restarted production, and a presence of a person around the production device. Presence detection means, the time from the occurrence of a failure of the production device to the detection of the presence of a person around the production device, and the production device after the presence of a person near the production device is detected. And a time measuring means for individually measuring a time until the production is resumed and a time when the production is resumed. 2. The apparatus according to claim 1, wherein the presence detecting means detects that the specific worker is present in the vicinity of the production apparatus by detecting a signal from the signal response means of the specific worker. Item 2. The failure monitoring system for a production device according to Item 1.