JPH03194696A - Fault display system - Google Patents

Abstract

PURPOSE:To quickly inform a watchman of the fault which occurs during his absence in a monitor room by flickering a fault indicator again at the time of detecting his presence in the case that he is absent at the time of lighting the fault indicator and stopping sounding of an alarm device. CONSTITUTION:If the watchman is absent in the monitor room at the time of the occurrence of trouble, a fault indicator 4 is flickered again and alarm devices 5 and 6 are sounded to indicate the occurrence of fault when a sensor 7 detects his presence. Consequently, it is easily confirmed that fault occurs during his absence.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention blinks a fault indicator and sounds an alarm device when a fault occurs, and after a predetermined time, lights up the fault indicator and also The present invention relates to a failure display system with an automatic alarm stop function that stops the sounding of an alarm device, and particularly to a failure display system that can promptly notify a failure that occurs when a supervisor is absent from a monitoring room.

(Prior Art) Conventionally, in the monitoring and control of various plants, when a failure occurs, a failure indicator flashes and an alarm device sounds.
2. Description of the Related Art Fault display systems have been widely used that have an automatic alarm stop function that turns on a fault indicator and stops an alarm device from sounding after a predetermined period of time has elapsed.

FIG. 5 is a block diagram showing an example of this type of failure display system. In FIG. 5, the fault display system installed in the monitoring room displays a fault indicator 2 when the fault display/alarm monitoring device 1 detects that a fault has occurred in the plant.
is flashed and a buzzer 3, which is an alarm device, is sounded, and after a predetermined period of time has elapsed from this, the failure indicator 2 is turned on and the buzzer 3 stops sounding.

In this case, the flashing of the fault indicator 2 and the sound of the buzzer 3 will occur regardless of whether the supervisor is present in the monitoring room or not.
This is done for a predetermined period of time after a failure occurs. Therefore, it is difficult to determine whether a failure has occurred while the supervisor is away by checking the failure indicator 2 when the supervisor returns to the monitoring room.
This is done by visually checking that the is lit.

FIGS. 6(a) and 6(b) show the states of the failure indicator 2 and the buzzer 3 in chronological order after the failure occurs. Further, FIG. 7 shows a failure indicator 2. 3 is a flow diagram showing an example of a procedure for controlling the buzzer 3. FIG.

Now, in such a failure display system, a failure that occurs when a supervisor is present in the monitoring room can be determined very easily by checking the flashing of the failure indicator 2 and the sound of the buzzer 3. . However, a judgment about a failure occurring while the supervisor is absent is made by visually confirming that the failure indicator 2 is lit when the supervisor returns to the monitoring room. For this reason, it is extremely difficult and inconvenient to check a failure that has occurred while the supervisor is away from among the many failure indicators 2 that exist. Therefore, when a failure occurs in a plant, the failure must be promptly resolved, but in this respect, the above-mentioned confirmation method is problematic because it delays the supervisor's decision.

(Section Ws to be solved by the invention) As described above, in the conventional failure display system with an automatic alarm stop function, the supervisor cannot promptly confirm a failure that occurs when the supervisor is absent from the monitoring room. The problem was that there was no.

An object of the present invention is to provide an extremely reliable failure display system that can promptly notify a supervisor of a failure that occurs when the supervisor is absent from the monitoring room.

[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above object, the present invention includes a fault indicator and an alarm device, and when a fault occurs, the fault indicator flashes and the alarm device sounds. , and a fault display system with an automatic alarm stop function that turns on a fault indicator and stops sounding an alarm device after a predetermined period of time has elapsed; If the presence/absence detection means detects the absence of a guard when the fault indicator lights up and the alarm device stops sounding, the fault indicator flashes again when the presence of the guard is detected. The present invention also includes means for indicating failure during absence, which sounds an alarm device.

(Function) Therefore, in the fault display system of the present invention, when a fault occurs, the fault indicator flashes and the alarm device sounds to display the fault, regardless of whether a supervisor is present in the monitoring room or not. After a predetermined period of time has elapsed, the fault indicator lights up and the alarm device stops sounding. Therefore, when a supervisor is present, it is possible to easily confirm that a failure has occurred by checking the flashing of the failure indicator and the sound of the alarm device. In addition, if the lifeguard is absent, when the lifeguard is detected to be present again, the failure indicator will flash again and the alarm will sound to indicate the failure while the lifeguard is absent. It is possible to easily confirm that a failure has occurred during the absence of the supervisor.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an example of the configuration of a failure display system according to the present invention. That is, the failure display system of this example includes a failure indicator 4, a buzzer 5 and a chime 6 which are warning devices, and an occupancy/absence detection means. It consists of a sensor 7 and a failure display/warning monitoring device 8.

Here, the failure indicator 4 indicates a failure by blinking or lighting. Further, the buzzer 5 and the chime 6 issue a failure alarm by ringing with a unique tone. Furthermore, the sensor 7 detects the presence or absence of a supervisor in the monitoring room in which the failure display system is installed. Furthermore, failure display/
The alarm monitoring device 8 has the following functions (a) and (b).

(a) When a failure occurs in the monitored object, the failure indicator 4 is controlled to blink at a cycle of T1, and the buzzer 5 is controlled to sound, and after a predetermined time (the time required for a supervisor to confirm the failure) has elapsed, the failure indicator 4 is controlled to blink at a cycle of T1. A failure display/automatic alarm stop function that controls the lighting of the buzzer 4 and stops the sound of the buzzer 5.

(b) When the sensor 7 detects the absence of the watchman when the fault indicator 4 lights up and the buzzer 5 stops sounding,
When the presence of the guard is detected, the fault indicator is set to 72 again.
Absence failure display function that controls blinking at a cycle of (T2<TI) and controls chime 6 to sound.

Next, let's talk about the operation of the fault display system configured as above! This will be explained using Figures 2 to 4.

In FIG. 1, when the failure indicator/alarm monitoring device 8 detects that a failure has occurred in the monitored object, the failure indicator 4
Then, by controlling the buzzer 5, the failure indicator 4 starts blinking at a cycle of T1, and the buzzer 5 starts sounding to indicate a failure. Then, when a predetermined period of time has elapsed, the failure indicator 4 and the buzzer 5 are controlled so that the failure indicator 4 lights up and the buzzer 5 stops sounding. Therefore, if a supervisor is present, he or she can visually confirm that the failure indicator 4 flashes at a cycle of T1 and listen to that the buzzer 5 is sounding to determine if a failure has occurred. You can easily check what you have done.

On the other hand, when the lifeguard is absent, when the sensor 7 detects that the lifeguard is present again, the failure indicator 4 and buzzer 5 are controlled so that the failure indicator 4 is shorter than T1. It flashes at a cycle of T2, and a chime 6 sounds in place of the buzzer 5 to indicate a failure in the absence. Therefore, if the supervisor is absent when a failure occurs, the failure indicator 4 will be activated when the supervisor returns to the monitoring room.
By visually confirming that the chime 6 flashes at a cycle of T2 and aurally confirming that the chime 6 is ringing, it is possible to easily confirm that a malfunction has occurred during the user's absence.

FIG. 2 is a diagram showing the states of the fault indicator 4, buzzer 5, and chime 6 in this case in the order of time, and FIG. 3 is a time chart showing the flashing state of the fault indicator 4.
FIG. 4 is a flowchart showing the procedure for controlling the fault indicator 4, buzzer 5, and chime 6.

As described above, the fault display system of this embodiment includes a fault display 4 that indicates a fault by flashing or lighting, a buzzer 5 and a chime 6 that issue a fault alarm with a unique tone, and a fault display system. A sensor 7 detects the presence or absence of a supervisor in the monitored room, and a failure indicator 4 is installed when a failure occurs in the monitored object.
is blinked at a cycle of T1, and the buzzer 5 is controlled to sound, and after a predetermined time (the time required for the supervisor to confirm the failure) has elapsed, the failure indicator 4 is controlled to turn on and the buzzer 5 is controlled to stop sounding. If the failure display/automatic alarm stop function and the failure indicator 4 light up and the buzzer 5 stops sounding and the sensor 7 detects the absence of a lifeguard, the failure will occur again when the presence of the lifeguard is detected. Turn the display to T
2 (T2<TI), and a failure display/alarm monitoring device 18 having a failure display function during absence, which controls blinking at a cycle of T2<TI and controls the chime 6 to sound.

Therefore, when a failure occurs, the failure indicator 4 flashes and the buzzer 5 sounds to indicate the failure, so if a supervisor is present, it is easy to confirm that a failure has occurred. It is possible to do so. Furthermore, if the supervisor is absent when the above-mentioned failure occurs, the failure indicator 4 will flash again at a shorter cycle than the above-mentioned flashing when the supervisor returns to the monitoring room. At the same time, the chime 6 sounds to indicate a failure while the supervisor is absent, making it possible to quickly and easily confirm that a failure has occurred while the supervisor is absent.

As a result, if a failure occurs in the monitored object, it can be quickly confirmed and the failure can be promptly resolved.

In the above-mentioned embodiment, as a failure display function during the absence of the failure display/alarm monitoring device 8, the blinking cycle is made shorter than that of the failure indicator when a failure occurs, and the tone of the alarm monitoring device is changed to a buzzer. The explanation has been given as an example of a case in which a chime is used instead of a chime, but the present invention is not limited to this in any way. It is also possible to change the tone from a chime to a buzzer.

[Effects of the Invention] As explained above, according to the present invention, if the lifeguard is absent when the failure indicator lights up and the alarm device stops sounding, the time when the presence of the lifeguard is detected. Since the failure indicator flashes again and the alarm device sounds to indicate a failure while the supervisor is away, it is possible to immediately notify the supervisor of a failure that occurs while the supervisor is absent from the monitoring room. An extremely reliable fault indication system can be provided.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a fault display system according to the present invention, and FIG. 2 shows a fault display in the same embodiment.
A diagram showing the states of the buzzer and chime in the order of time; FIG. 3 is a time chart diagram showing the flashing state of the fault indicator in the same embodiment; and FIG. 4 is a diagram showing the control of the fault indicator, buzzer, and chime in the same embodiment. FIG. 5 is a block diagram showing an example of a conventional failure display system; FIG. 6 is a diagram showing the states of the failure indicator and buzzer in FIG. 5 in chronological order; FIG. This figure is a flowchart showing an example of the procedure for controlling the failure indicator and buzzer in FIG. 5. 4...Fault indicator, 5...Buzzer 6...Chime, 7...Sensor 8...Fault display/alarm monitoring device. Figure 1

Claims (2)

[Claims] (1) An automatic system that is equipped with a fault indicator and an alarm device, which blinks the fault indicator and sounds the alarm device when a fault occurs, and lights up the fault indicator and stops sounding the alarm device after a predetermined period of time has elapsed. A fault display system with an alarm stop function includes a presence/absence detection means for detecting presence or absence of a supervisor in a monitoring room; When the absence of the guard is detected by the absence detecting means, the fault indicator during absence blinks the fault indicator again and sounds the alarm device at the time when the presence of the guard is detected. A fault display system featuring: (2) Claim (1) characterized in that the fault display means during absence is configured to blink a fault indicator and sound a warning device when a fault occurs, and change the flashing cycle and the tone of the sound. Fault indication system described in .