JP2000259237A - Device and system for logging and device for generating trigger signal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a logging device as the detection function of an abnormality detection device accompanying a monitoring object equipment as well and to notify the abnormality occurrence of the monitoring object equipment by fetching an abnormal trigger signal notifying of the abnormal operation of the monitoring object equipment directly from the outside and recording abnormal data on the basis of the abnormal trigger signal. SOLUTION: Monitoring object equipment 11 is provided with an abnormality notifying device 19 for notifies the outside of the occurrence of a failure, etc. When the device 19 outputs abnormal notification, an abnormal trigger signal is led to a logging device 14 by being connected with it. The device 14 acquires image information from a camera 15, sound information from a microphone 16 and control information of the equipment 11 on the basis of a trigger signal from the outside and records/reproduces them. In such a case, as for an abnormal trigger signal, an abnormal notification signal of the device 19 notifying the abnormality of the equipment 11 can be used as an abnormal trigger signal, and the abnormality detection signals of various incidental equipment for the equipment 11 are also used as an abnormal trigger signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automated F
More specifically, the present invention relates to a logging device for maintaining and managing monitored equipment such as an A (Factory Automation) manufacturing device, and more particularly, a logging device capable of easily inputting an external trigger signal for notifying an abnormal operation of the monitored equipment, The present invention relates to a logging system and a trigger signal generation device.

[0002]

2. Description of the Related Art Generally, as a method of analyzing a trouble of a monitored facility, it is necessary to accurately record an operation state of how the monitored facility moves. As this recording means,
For example, as shown in FIG. 10, a monitoring target facility (not shown) to be monitored is controlled by a controller 101, process data of the controller 101 is collected in a logging device 102, and a camera 103 and a microphone 10
4. Image data, sound data, and sensor data of the monitoring target equipment collected by the various sensors 105 and 106 are also recorded by the logging device 102 as recording targets, and each data recorded by the logging device 102 in response to a user's reproduction request. There is known a logging device that reproduces and analyzes the data on a display of a personal computer (PC) 107 or the like.

[0003]

However, such a method of generating a trigger signal by the logic of the controller has the following problems. (1) Since the controller is described in a normal ladder language, only maintenance personnel who have acquired the controller can use the controller.

(2) Even if an attempt is made to add a program for generating a trigger signal, the program capacity and the contact capacity are usually set to the minimum necessary, so that there is a margin for adding a new program or contact. Instead, you have to free up memory to organize the entire program and add new programs.

[0005] (3) Adding a new program may disrupt the normally operating sequence.

Next, as another example, as shown in FIG. 11, a logging device 111 has a built-in trigger setting function for setting a trigger generation condition, and a camera 112, a microphone 113, and various sensors are set based on the trigger setting function. 11
Logging device 1 by collecting each data from 4,115
11 and play it back on the personal computer 116.

However, in this case, when the distance between the signal source (sensor) for generating the trigger signal and the logging device is large, the device is easily affected by noise. In particular, the case of an analog signal is remarkable.

Further, in order to clearly record the trouble occurrence phenomena of the monitored equipment in the logging device, it is necessary for a person in charge to directly monitor the operation state of the monitored equipment in front of the monitored equipment. It had a logging operation that was not affected and a problem that could not be automated.

Therefore, the present invention provides a logging device that can easily generate and use an abnormality trigger signal for notifying that an abnormality has occurred in a monitored object facility by also using a detection function of an abnormality detecting device attached to the monitored facility. , A logging system and a trigger signal generation device.

[0010]

According to the first aspect of the present invention,
A logging device that records an operation state of the monitored equipment, and an abnormal data recording unit that directly captures an abnormal trigger signal indicating an abnormal operation of the monitored equipment from outside and records abnormal data based on the abnormal trigger signal. It is characterized by having.

The invention according to claim 2 is characterized in that the destination of the abnormal trigger signal is provided with abnormal data recording means which is a signal source for notifying an external abnormal operation.

According to a third aspect of the present invention, there is provided an abnormal data recording means which is a wireless device having an external abnormal signal transmitting switch for receiving the abnormal trigger signal.

According to a fourth aspect of the present invention, there is provided an abnormal data recording means for receiving an abnormal trigger signal from an external trigger signal generating device.

According to a fifth aspect of the present invention, there is provided a logging device comprising an abnormal data recording means for directly receiving an abnormal trigger signal for notifying an abnormal operation of the monitored equipment from the outside, and recording abnormal data based on the abnormal trigger signal. It is a logging system in which a device and a trigger signal generating device that transmits an abnormal trigger signal from a wireless device having an abnormal signal transmission switch for the logging device are connected by a trigger signal communication network.

The invention according to claim 6 is the first, second, and third aspects of the present invention.
Alternatively, a trigger signal generation device that generates a trigger signal by applying to the logging device according to the fourth aspect and the logging system according to the fifth aspect is provided.

[0016]

According to the present invention, when recording an abnormal operation of a monitored facility, an abnormal trigger signal for notifying the abnormal operation of the monitored facility is directly taken in from outside, and abnormal data is recorded based on the abnormal trigger signal. Can be recorded by the abnormality data recording means, so that the abnormality occurrence output of the auxiliary equipment provided in the monitoring target equipment can be effectively used as an abnormality trigger signal.

For example, if a signal source such as a warning light, an indicator, and a sensor provided in the monitored facility is detected electrically, electromagnetically or optically and treated as an abnormal trigger signal,
No need for a new generator to generate the trigger signal,
Various incidental facilities attached to the existing monitoring target facility can also be used for trigger generation. Further, at the same time when an abnormality occurs in the monitoring target equipment, an abnormality occurrence output is obtained in ancillary equipment related to the abnormality, so that an abnormality trigger signal can be notified to the logging device in conjunction with the output. As a result, it is possible to automate the notification of the abnormality trigger signal to the logging device, and it is not necessary for the operator to watch out for an abnormality in front of the monitored equipment.

Further, when the destination of the abnormal trigger signal is a wireless device having an external abnormal signal transmission switch, the abnormal trigger signal can be captured from a remote location remote from the logging device via the wireless device. For example, when a worker notices an abnormality in the monitored equipment by turning on a warning light, displaying a display on a display, or outputting various sensors, an external worker sends an abnormal trigger signal to a logging device using a portable wireless device. Can be notified.

In the case where there is provided abnormal data recording means for taking in an abnormal trigger signal from an external trigger signal generating device, the abnormal trigger signal generated by the external trigger signal generating device can be directly taken in. Even if the signal source is an analog signal that is easily affected by noise, the trigger signal generation device can be installed near the signal source, so that the use can be achieved while avoiding the effect of noise.

Further, a logging device provided with abnormal data recording means for directly taking in an abnormal trigger signal for notifying an abnormal operation of the equipment to be monitored from the outside and recording data at the time of abnormality based on the abnormal trigger signal, and this logging device If you use a logging system that is connected to a trigger signal generation device that transmits an abnormal trigger signal from a wireless device that has an abnormal signal transmission switch to a trigger signal communication network, an external trigger signal that is connected to this network can be generated. An abnormal trigger signal can be easily notified from a device to a logging device at a remote position using a wireless device.
In this case, a long signal cable is not required due to the use of the wireless device, and wiring can be reduced.

When such a logging device and a logging system are provided with a trigger signal generating device for generating a trigger signal, a ladder language program must be acquired for a program of a trigger generating condition given to the trigger signal generating device in advance. Even a worker who does not have the ladder language can set the program in an easy language such as a graphical MMI (multi-model interface). In addition, a free memory for setting a new program is not required for the control unit, so that the sequence of the control unit is not disrupted. Further, even if the signal sources for generating the trigger signal are physically dispersed, the trigger signal can be generated by the one trigger signal generation device, and the setting thereof can be facilitated.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. The drawing shows an example of a logging system provided with a logging device. This logging system, as shown in FIG.
C (programmable logic controller) 12, and this controlled PLC control information is
Of the monitoring target equipment 11 acquired by the camera 15 and the microphone 16 via the data communication means 13 of the present invention, and guided to the logging apparatus 14 for recording.

The data recorded in the logging device 14 is reproduced on the display 17 and the speaker 18 in synchronization with the PLC control information and the image information and the sound information in response to the reproduction request.

At this time, the monitoring target equipment 11 to be logged is an automated F such as a production line or a machine tool.
The manufacturing apparatus A is controlled by the PLC 12 or another dedicated controller, and the motors and switches are controlled by the PLC 12 and the information is input to the PLC 12 at the same time.

Further, an abnormality notification device 19 such as a warning light and a display is provided to the monitored equipment 11 to notify the outside that a failure or an abnormal stop has occurred during operation. It is provided at an external position with high visibility. When the abnormality notification device 19 outputs an abnormality notification, an abnormality trigger signal is guided to the logging device 14 in conjunction with the notification.

The PLC 12 controls the operation of the equipment 11 to be monitored, and the control data of the PLC 12 is recorded as logging data directly from the general-purpose or FA-dedicated communication such as RS-232C to the logging device 14.

The logging device 14 acquires image information from the camera 15, sound information from the microphone 16, and control information of the monitoring target equipment 11 based on an external trigger signal, and acquires the acquired information. Record / play back. At this time, an abnormality notification signal of an abnormality notifying device 19 for notifying an abnormality of the monitoring target equipment 11 may be used as an abnormality trigger signal accompanying the occurrence of an abnormality of the monitoring target equipment 11, or an operation panel surface of the monitoring target equipment 11 may be used. Can be treated as an abnormal trigger signal, and an abnormal detection signal of various incidental facilities of the monitoring target facility 11 is also used as the abnormal trigger signal.

The logging device 14 can also be connected to an external device such as a personal computer for developing a trigger program from outside.

The camera 15 captures image information of the equipment 11 to be monitored, inputs the image information to the logging device 14, and causes the display 17 to display and output the recording information recorded by the logging device 14 and the control information of the PLC 12.

The microphone 16 collects acoustic information of the equipment 11 to be monitored, inputs the acoustic information to the logging device 14, and reproduces the recorded information recorded by the logging device 14 from the speaker 18.

Next, a control circuit block diagram of the logging device will be described with reference to FIG. This logging device 14
Recording condition setting unit 21, image input unit 22, sound input unit 23, PLC input / output unit 24, input control unit 25, primary file 26, trigger detection unit 27, data editing unit 28, log It comprises a file 29 and a log reproducing unit 30.

The recording condition setting section 21 sets a trigger condition,
The recording conditions such as the recording cycle and the recording time are set by the user.
5, transmitted to the trigger detection unit 27 and the data editing unit 28.

The image input unit 22 is connected to a camera 15 such as a CCD camera, and outputs an image input signal input from the camera 15 in accordance with an instruction from the input control unit 25. The input image signal is converted into digital information such as a JPEG (color still image coding) method and output.

The sound input section 23 is connected to the microphone 16 and outputs a sound input signal input from the microphone 16 in accordance with an instruction from the input control section 25. The input acoustic signal is converted into digital information and output.

The PLC input / output section 24 corresponds to a serial communication interface (I / F) for PLC communication or an FA dedicated communication I / F, and acquires control data of the PLC 12 for controlling the designated monitoring target equipment 11. .

After activating the logging device 14, the input control unit 25 operates at every recording cycle set by the recording condition setting unit 21.
Image input unit 22, sound input unit 23, PLC input / output unit 24
, Image data, sound data, and PLC control data. Each acquired data is stored in the temporary file 26 corresponding to the designated recording time.

The input control unit 25 includes a trigger detection unit 27
When an input of an abnormal trigger signal is received from the device, after the designated recording time has elapsed, the input is stopped, the output to the primary file 26 is also stopped, and the data editing unit 28 is notified of the input completion.

The trigger detecting section 27 detects a trigger for starting recording to the logging device 14 input from the outside, and monitors whether or not the trigger input is the trigger input set by the recording condition setting section 21. I do. Then, when the trigger detection unit 27 detects the input of the abnormality trigger signal accompanying the occurrence of the abnormality in the monitoring target facility 11, the trigger detection unit 27 notifies the input control unit 25 of that.

The data editing unit 28 collects, from the input control unit 25, a notification of the completion of the input and data of the end of the recording. In addition, since the acquired image data, sound data, and PLC control data are recorded in the primary file 26, these data are edited into a sequential file and stored as a log file 29.

The log reproducing unit 30 connects the display 17 and the speaker 18, and reproduces data of the log file 29 according to a user's instruction.

Also, while monitoring the image on the display 17 from the outside, the recording condition setting unit 21 and the trigger detection unit 27 are allowed to input arbitrary operations such as registration of a trigger generation program and the like and change of settings.

FIG. 3 shows a warning light (pilot lamp) 31 as an example of the abnormality notification device 19 provided in the monitored equipment 11.
1 shows a logging system using. This logging system differs from the above-described logging system in the portion of the pilot lamp 31. Therefore, the portion of the pilot lamp 31 will be described.

The above-described pilot lamp 31 is provided as an abnormality notification device 19, and the pilot lamp 31 is turned on in conjunction with the occurrence of an abnormality in the equipment to be monitored.
Inform external workers that an error has occurred. on the other hand,
The on / off state of the pilot lamp 31 is detected by a photodetector 32 such as a photoelectric detection sensor, and an abnormal trigger signal of the detected lighting state is input to a logging device.

As described above, the existing pilot lamp 31
By setting an abnormality notification device such as a signal source for notifying abnormal operation and detecting this signal source electrically or by other data acquisition means, it is possible to easily acquire the occurrence of the abnormality trigger signal. Therefore, the existing abnormality notification device can be effectively used as it is, and a new generation device for generating an abnormality trigger signal for the monitored equipment can be omitted.

Next, a description will be given of an abnormality detection state of the facility to be monitored using the pilot lamp 31. Now, if any abnormality occurs in the monitored equipment, the pilot lamp 31 is turned on in accordance with the occurrence of the abnormality to notify that an abnormality has occurred in the surroundings, and that the light is turned on by the light detector 3.
The abnormal trigger signal detected on the basis of the detection by 2 is simultaneously guided to a logging device to perform a logging operation.

At this time, since the lighting of the existing pilot lamp 31 attached to the equipment to be monitored can also be used for trigger generation using the signal source as a signal source, when an abnormality occurs in the equipment to be monitored, the logging device simultaneously outputs the abnormality trigger signal. Can be obtained. Therefore, it is possible to automatically secure the abnormality trigger signal of the monitoring target equipment and perform efficient logging.

FIG. 4 shows a logging system using a remote controller (remote controller) for artificially notifying an abnormal trigger signal from outside. This logging system has substantially the same configuration as the above-described logging system. Only the display 41 as the abnormality notification device 19 and the remote control transmitter 42 and the remote control receiver 43 are different.
The different parts will be described.

The display 41 is located at a position near the equipment to be monitored.
A plurality may be provided at any location or at any other position monitored by the operator. The display screen shows the “production plan”, “production volume”,
The progress of the operation status of the monitored equipment such as [Stop] is displayed and guided.

The remote control transmitter 42 has a small shape suitable for portable use by an operator, and has an abnormal signal transmitting switch 42a on its operation surface.
When a is input, an abnormal trigger signal is transmitted, and based on the signal, the remote control receiver 4 provided in the logging device is operated.
An abnormal trigger signal is wirelessly input to 3.

Therefore, if the wireless function of the remote control transmitter 42 and the remote control receiver 43 is used, when the operator notices the occurrence of an abnormality in the monitored equipment by looking at the display guide of the display 41, the operator can use the logging device. Even from a distant remote position, an operator can artificially input and instruct an abnormal trigger signal using wireless communication.

In addition, the following are possible abnormality notification means, and any notification means depending on the application is adopted. (1) Detect red blinking display on the operation panel screen of the monitored equipment. (2) Detect the lighting of the LED when the operation switch of the facility to be monitored is pressed. (3) Lighting of the abnormality detection LED of the PLC is detected. (4) Detect a system recovery error due to a power failure or the like using NMI (non-maskable interrupt). (5) Detecting a system error using WDT (watchdog timer). (6) A cycle time error of the control cycle is detected. (7) An error of the user application set by the user is detected.

Using such an abnormality notifying means or any of the abnormality notifying means described above, the monitoring target equipment 11
It accurately reports that an abnormality has occurred in the operating state of each product and each manufactured product.

Next, the notification operation when an abnormality occurs in the monitored equipment will be described with reference to the flowchart of FIG. Now, when the trigger signal is guided to the logging device 14, the trigger detecting section 27 reads out the recording condition from the recording condition setting section 21 (step n1), and based on the recording condition, the trigger detecting section 27 sends a signal to notify the abnormal operation. The source is determined as to whether the abnormality notification device 19 shown in FIG. 1 such as a warning light or the wireless remote control transmitter 42 shown in FIG.
If it is an abnormal trigger signal output from the warning light (step n2), it is checked whether or not the warning light is lit. If not, it waits until an abnormal trigger signal detecting the lighting is obtained (step n3). ), When an abnormal trigger signal indicating that the warning light is turned on is obtained, the trigger detecting unit 27
The abnormality trigger signal is notified to the input control unit 25. Based on this, the input control unit 25 controls the camera, the microphone,
The logging data obtained from the PLC is processed to prepare for the input of the next abnormal trigger signal (step n4).

On the other hand, if an abnormal trigger signal is not notified to the trigger detecting section 27, the monitored equipment is operating normally, and the trigger detecting section 27 prepares for the next input of the abnormal trigger signal. On the other hand, if the signal source of the abnormal trigger signal is not a warning light but an abnormal trigger signal from the remote control transmitter 42 (step n5), the trigger detecting unit 27 determines that the abnormal trigger signal from the remote control transmitter 42 has been received. After confirmation, the abnormality trigger signal is notified to the input control unit 25. At this time, similarly, the input control unit 25 processes the logging data obtained from the camera, the microphone, and the PLC (step n6).

FIG. 6 shows a logging system for taking in an abnormal trigger signal from a trigger signal generator installed outside the logging device. This logging system comprises a logging device 63 to which a camera 61 and a microphone 62 are connected, and a personal computer 64. PLC connected with various sensors 65 and 66
67 and 67 are connected to independent trigger signal generation devices 68, respectively.

As shown in the control circuit block diagram of FIG. 7, the trigger signal generating device 68 includes a communication I / F 71, a program storage unit 72, and a program execution processing unit 73.

The communication I / F 71 receives information from the PLC 67 and the respective sensors 65 and 66, or receives a logging device 63 from an external personal computer 64 for creating a trigger generation program.
This is a communication I / F used for downloading a program to the monitor or for monitoring when a trigger generation program is debugged.

The program storage section 72 stores a program for generating an abnormal trigger signal based on arbitrary conditions using input data as a trigger generation element. This storage medium corresponds to a storage such as a semiconductor memory or a magnetic medium, and stores therein a trigger generation program created by the personal computer 64 or an external device via the communication I / F 72.

The program execution processing unit 73 reads out the program stored in the program storage unit 72, executes the processing of the input data, and determines whether the trigger generation condition and the logic embedded in the program are satisfied / not satisfied. , And a trigger signal is generated.

As described above, since the trigger signal generation device 68 can be independently provided at a position outside the logging device 63,
The abnormal trigger signal generated by the trigger signal generation device 68 can be input from the outside. Even if the signal source is an analog signal that is easily affected by noise, the trigger signal generation device 68 can be located near the signal source. Therefore, a stable signal can be obtained in which the influence of noise is avoided by devising the arrangement position of the trigger signal generation device 68.

The provision of the trigger signal generator 68 makes it possible to program a trigger generation condition program given to the trigger signal generator 68 in an easy language other than the ladder language. Therefore, even a worker who has not mastered the ladder language can set the program in an easy language other than the ladder language, such as a graphical MMI (multi-model interface). In addition, when setting a program for generating a new trigger, the PLC 67 does not need its free memory, so that the PLC 67 does not have to be burdened and the sequence of the PLC 67 does not get out of order.

Further, even if the signal sources for generating the trigger signal are physically dispersed, the trigger signal can be generated by the single trigger signal generation device 68, and the program for each signal source can be programmed. Can be set easily. The trigger signal input to the trigger signal generation device 68 is a PLC6
7 may be directly input without going through.

FIG. 8 shows a logging system of a trigger signal generation device using a network. The logging system includes a first logging device 83 connected to a camera 81 and a microphone 82, and a second logging device 85 connected to a vibration sensor 84. , A personal computer 86, a trigger signal generating device 87, a PLC 88 connecting the first sensor S1 and the second sensor S2, and all of the third sensor S3 and the fourth sensor S4 for trigger signal communication. This is a connection configuration using a network 89.

This trigger signal communication network 89
Since the plurality of logging devices 83 and 85, the PLC 88, and each of the sensors S1 to S4 are connected to the trigger signal generation device 87 via the trigger signal generation device 87, even if the trigger signal sources are distributed to a plurality of locations, the trigger signal generation device An abnormal trigger signal can be generated in common by one of the 87 units.

Since an abnormal trigger signal can be output from the trigger signal generating device 87 to a plurality of logging devices via the network 89, the abnormal trigger signals to each of the logging devices 83 and 85 can be collectively transmitted. Can be entered.

Further, since the recording conditions can be input and set simultaneously from the external personal computer 86 to the recording condition setting sections of the logging devices 83 and 85 via the network 89, the recording conditions can be set efficiently.
The recording conditions can be set from anywhere via the computer 9.

The notification of the trigger at this time includes a method of notifying the establishment of the trigger by broadcast (broadcast) and a method of notifying the establishment of the trigger repeatedly and cyclically. Select

FIG. 9 shows a logging system of a trigger signal generator having a wireless function. This logging system is different from the above-described logging system of FIG. 8 in the communication section between the trigger signal generator and the logging device. Therefore, the different communication units will be described.

The trigger signal generating device 91 includes a remote control transmitter as a wireless function, and the first logging device 92 and the second logging device 93 similarly include a corresponding remote control receiver as a wireless function. The communication unit between the communication unit 91 and each of the logging devices 92 and 93 is wirelessly substituted for the network.

Therefore, the trigger signal generator 91 provided in the logging system is connected to each signal source via a network and is connected to each logging device 92 and 93 via radio. For this reason, the trigger signal generation device 91 is intended to use heterogeneous communication using both the network and the radio.

Next, the detection state of the abnormal trigger signal using the radio will be described. Now, when abnormality occurrence data from a signal source such as a sensor is input to the trigger signal generation device 91, the trigger signal generation device 91 wirelessly transmits the abnormality trigger signal generated here. The abnormal trigger signal transmitted based on this is wirelessly transmitted to each logging device 9.
2 and 93 are input to a remote control receiver. Based on this, each of the logging devices 92 and 93 synchronously receives the abnormal trigger signal wirelessly.

If such a logging system using both radio and network is used, an abnormal trigger signal is generated at the same time as the occurrence of an abnormality in the monitored equipment.
Can automatically notify the remote logging devices 92 and 93.

In this case, a long signal cable is not required due to the use of the wireless device, and wiring can be reduced. In particular, the logging device is wirelessly free of cable restrictions and can be freely relocated, and the position and orientation of the camera and microphone are not restricted and relocation is facilitated.

As described above, when recording the abnormal operation of the monitored equipment, it is possible to directly take in the abnormal trigger signal for notifying the abnormal operation of the monitored equipment from the outside and record the abnormal data based on the abnormal trigger signal. Therefore, the abnormality occurrence output of the auxiliary equipment provided in the monitoring target equipment can be effectively used as the abnormality trigger signal. For example, if a signal source such as a warning light, a display, or a sensor provided in the monitored equipment is detected electrically, electromagnetically, or optically and treated as an abnormal trigger signal, a trigger signal for generating a trigger signal is generated. A new generation device is not required, and various incidental facilities accompanying the existing monitoring target facility can be used for trigger generation. Further, at the same time when an abnormality occurs in the monitoring target equipment, an abnormality occurrence output is obtained in ancillary equipment related to the abnormality, so that an abnormality trigger signal can be notified to the logging device in conjunction with the output. As a result, it is possible to automate the notification of the abnormality trigger signal to the logging device, and it is not necessary for the operator to watch out for an abnormality in front of the monitored equipment.

Further, when a remote control transmitter having an external abnormality signal transmission switch is used as the destination of the abnormality trigger signal, the abnormality trigger signal can be acquired via a wireless function from a remote location remote from the logging device. it can. For example, when an operator notices an abnormality in the monitored equipment by turning on a warning light, displaying guidance on a display, or outputting various sensors,
Using a portable remote control transmitter, an external worker can notify an abnormal trigger signal to a logging device.

When the abnormal trigger signal is set to be fetched from an external trigger signal generator, the abnormal trigger signal generated by the external trigger signal generator can be directly fetched. Even if the source is an analog signal that is easily affected by noise, the trigger signal generation device can be installed near the signal source, so that the use can be achieved while avoiding the effect of noise.

Further, by using a logging system in which a logging device and a trigger signal generating device for transmitting an abnormal trigger signal to the logging device are connected by a network for trigger signal communication, an external device connected to the network can be used. An abnormal trigger signal can be easily notified from a trigger signal generation device to a remote logging device using a wireless device. In this case, a long signal cable is not required due to the use of the wireless device, and wiring can be reduced.

When such a logging device and a logging system are provided with a trigger signal generating device for generating a trigger signal, a program of a trigger generating condition given in advance to the trigger signal generating device must be obtained in a ladder language. Even non-workers can set up programs in easy languages. In addition, the PLC does not need a free memory for setting a new program, and therefore, the sequence of the PLC is not disrupted. Further, even if the signal sources for generating the trigger signal are physically dispersed, the trigger signal can be generated by the one trigger signal generation device, and the setting thereof can be facilitated.

In the correspondence between the present invention and the configuration of the above embodiment, the abnormal data recording means of the present invention corresponds to the data input system of the embodiment and the data editing unit 28 of the recording system. The signal source is the abnormality notification device 19, pilot lamp 31, indicator 41, sensors 65, 66, S
Although the radio corresponds to the remote control transmitter 42 corresponding to 1 to S4, the present invention can be applied based on the technical idea shown in the claims, and is limited to only the configuration of the above embodiment. Not something.

For example, in the above-described embodiment, a portable remote control transmitter 42 is shown as an example in the above-described wireless device, but the present invention is not limited to this, and a plurality of fixed wireless devices may be distributed and installed. May be configured to provide an abnormal trigger signal from an arbitrary position.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an example of a logging system according to the present invention.

FIG. 2 is a control circuit block diagram of the logging device of the present invention.

FIG. 3 is a schematic configuration diagram of a logging system using a pilot lamp according to the present invention as a signal source.

FIG. 4 is a schematic configuration diagram of a logging system using the remote controller of the present invention.

FIG. 5 is a flowchart showing a notification operation when an abnormality occurs in the monitored equipment of the present invention.

FIG. 6 is a schematic configuration diagram of a logging system in which a trigger signal generation device of the present invention is independently provided.

FIG. 7 is a control circuit block diagram of the trigger signal generation device of the present invention.

FIG. 8 is a schematic configuration diagram of a logging system using the network of the present invention.

FIG. 9 is a schematic configuration diagram of a logging system using both a wireless function and a network function according to the present invention.

FIG. 10 is a schematic configuration diagram showing an example of a conventional logging system.

FIG. 11 is a schematic configuration diagram showing another example of a conventional logging system.

[Explanation of symbols]

 11 Monitoring target equipment 12, 67, 88 PLC 13 Data communication means 14, 63, 83, 85, 92, 93 Logging device 15, 61, 81 Camera 16, 62, 82 Microphone 17 Display 18 Speaker 19 ... Abnormal notification device 21 ... Record condition setting unit 25 ... Input control unit 27 ... Trigger detection unit 28 ... Data editing unit 31 ... Pilot lamp 32 ... Photodetector 41 ... Display unit 42 ... Remote control transmitter 43 ... Remote control receiver 42a: Abnormal signal transmission switch 64, 86 ... Personal computer 65, 66, S1-S4 ... Sensor 68, 87, 91 ... Trigger signal generator 71 ... Communication I / F 72 ... Program storage unit 73 ... Program execution processing unit 84 ... Vibration Sensor 89… Network

Continued on the front page F-term (reference) 5C087 AA02 AA08 AA19 AA32 AA37 AA44 BB03 DD01 DD27 DD39 EE16 FF04 FF19 GG19 GG31 5H220 AA06 BB13 CC09 CX09 GG04 HH03 JJ12 JJ19 JJ26 JJ27 KK01 KK06 A0303 03 FF04

Claims (6)

[Claims] 1. A logging device for recording an operation state of a monitored facility, wherein an abnormal trigger signal for notifying an abnormal operation of the monitored facility is directly taken in from outside, and abnormal data is recorded based on the abnormal trigger signal. A logging device provided with abnormal data recording means. 2. The logging device according to claim 1, wherein the abnormal data recording means is configured to receive the abnormal trigger signal as a signal source for notifying an external abnormal operation. 3. The logging device according to claim 1, wherein the abnormal data recording means is configured to receive an abnormal trigger signal from a wireless device having an external abnormal signal transmission switch. 4. The logging device according to claim 1, wherein the abnormal data recording means fetches an abnormal trigger signal from an external trigger signal generating device. 5. A logging device comprising an abnormal data recording means for directly taking in an abnormal trigger signal for notifying an abnormal operation of a monitored facility from the outside and recording data at the time of abnormality based on the abnormal trigger signal; A logging system, which is connected to a trigger signal generating device that transmits an abnormal trigger signal from a wireless device having an abnormal signal transmission switch for a trigger signal communication. 6. A logging device according to claim 1, 2, 3 or 4, and a trigger signal generating device which generates a trigger signal by applying to the logging system according to claim 5.