JP2000105883A - Alarm device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To actualize an alarm device which makes it easy to judge alarm contents and reduces operation misses. SOLUTION: To a control part 1 having a CPU, an alarm detection part 2 connected with an abnormality detection senser, a switch part 3 for switching between a lamp test and a display mode, a lamp display part 4 which displays an alarm, an output part 5 which outputs an alarm signal, and a setting part 6 are connected, an alarm input delay function is provided which does not operate an alarm means until a certain time set by the setting part 6 passes after an abnormality signal is inputted, and an alarm self-holding function is provided which continues the alarm even when the abnormality signal input is reset; and 1st alarm notifying operation by the alarm input delay function and 2nd alarm notifying operation by the alarm self-holding function are made different. If an abnormality signal is inputted again during the alarm self-holding operation, 1st alarming operation is started in synchronism with the inputted signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm device which, when an abnormality occurs in a device, notifies the abnormality.

[0002]

2. Description of the Related Art An alarm device for monitoring an abnormal operation of a device includes an alarm input delay function for effecting an alarm operation only when a temperature abnormality has continued for a predetermined time or more so as to effectively operate, for example, temperature monitoring of a frozen showcase. And an alarm self-holding function that makes it easy to investigate the cause of the abnormality by continuing the alarm operation even if the abnormality is released during the alarm operation. One example of such an alarm device is shown in the relay sequence of FIG. In FIG. 3, ALSG is a signal from an alarm source, T is an input signal delay timer, X is a signal self-holding relay, YL is an alarm lamp, BZ is an alarm buzzer, R
ESSW is an alarm self-hold release switch, and BZSW is an alarm buzzer stop switch.

The alarm operation and its stop operation are performed by operating a delay timer T in response to an abnormal signal from an alarm source and, if the abnormal signal continues even after a predetermined time has elapsed, a signal self-holding relay X operates. The alarm lamp YL is turned on, and the alarm buzzer BZ sounds. The alarm buzzer BZ is stopped by a buzzer stop switch BZSW, and the alarm operation is stopped by a self-hold release switch RESSW.

[0004]

The above-described alarm device having a conventional alarm input delay function and an alarm self-holding function determines whether the alarm issued is an abnormal continuation or an alarm by alarm self-holding. In addition, it is difficult to distinguish whether the alarm is an emergency alert requiring urgency, and it sometimes takes time to process the alarm.
In addition, there is a risk that if the alarm finder is unfamiliar, the operation of stopping the buzzer may be erroneously performed and the alarm self-hold may be reset.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide an alarm device having an alarm input delay function and an alarm self-holding function, which makes it easy to judge the contents of an alarm and makes it difficult to make an operation error. .

[0006]

According to a first aspect of the present invention, there is provided an alarm input delay for operating a notifying means to perform a first alarm notifying operation only after an abnormal signal is input for a predetermined time or more. An alarm device having a function and an alarm self-holding function for shifting from the first alarm notification operation to the second alarm notification operation when the abnormal signal input is released and continuing the alarm notification operation, wherein the first alarm notification operation and The alarm operation differs from the second alarm notification operation, and if an abnormal signal is input again during the second alarm notification operation, the alarm input delay function is ignored and the first alarm notification operation is started.

According to a second aspect of the present invention, in the first aspect of the present invention, when an abnormal signal is input, there is provided an operation display mode for operating an alarm means in synchronization with the signal, and an alarm notification operation in the operation display mode. Is different from both the first alarm notification operation and the second alarm notification operation.

According to a third aspect of the present invention, in the first or second aspect, the notifying means is a lamp and a buzzer, and has a lamp test switch for testing the notifying means and a stop switch for stopping the buzzer from sounding. The reset of the second alarm notification operation by the alarm self-holding function is performed by simultaneously operating the lamp test switch and the buzzer stop switch.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a circuit block diagram of an alarm device according to the present invention.
The control unit 1 includes a PU, a CPU, a memory such as a ROM and a RAM, a timer, and the like. An alarm detection unit 2, a switch unit 3, and a setting unit 6 are connected to an input port 9 of the control unit 1, and an output port 10 Is connected to a lamp display unit 4 and an output unit 5.

The alarm detection section 2 has connection terminals 2a for connecting a plurality of sensors for detecting abnormalities. Each connection terminal 2a is connected to an input port 9a of the control section 1 via a photocoupler 8. The switch unit 3 is provided with a display lamp test switch 3a and a buzzer stop switch 3b of the lamp display unit 4. Further, an operation for canceling an alarm input delay function and an alarm self-holding function and performing an alarm notification operation in synchronization with an abnormal signal is performed. A display mode selection switch 3c is provided for each sensor to switch between a display mode and an alarm display mode in which an alarm input delay function and an alarm self-holding function are operated, and is connected to the input port 9b. The lamp display unit 4 is connected to the output port 10a, has a number of lamps corresponding to the number of connected sensors, for example, LEDs (light emitting diodes) 4a, and turns on the LEDs 4a corresponding to the sensors that output signals. , An error is displayed.

The output unit 5 has a batch output unit 12 and an alarm buzzer 13 and is connected to an output port 10b. The collective output unit 12 collectively outputs an alarm signal for transfer to another device, and the alarm buzzer 13 is for notifying an abnormality detection by sounding, regardless of the number of sensors. It is provided one by one. Setting unit 6
Is a rotary switch 14 for setting an alarm delay time of each connected sensor, and is provided in the same number as the number of sensors, and is connected to the input port 9c. The delay time is, for example, 1
It is preferable to provide a rotary switch that switches between 0 stages so that the setting can be made in 0 to 90 minutes and in 10 minute intervals.

Next, the flow of the operation of the control unit 1 will be described with reference to the flowchart of FIG. First, S1 (step 1)
Then, an alarm delay time for an abnormal signal input from the alarm detection unit 2 is set, and a display mode is selected to perform an initial setting. Then, the process proceeds to S2, where a signal input check is performed to determine whether an abnormal signal has been input from the sensor. If there is a signal, the process proceeds to S3 to determine whether the display mode is the alarm display mode or the operation display mode. If there is, the process proceeds to S4, and if it is the alarm display mode, the process proceeds to S7.

In S4, the lamp corresponding to the detected abnormal signal input is turned on without waiting for the set delay time. This lighting is continued until the input of the abnormal signal is canceled (S5).
Then, when released, the process proceeds to S6 to turn off the lamp, and then returns to S2. As described above, in the operation display mode, the alarm input delay function is not operated, and the notification means is operated simultaneously with the abnormal input.

In S7, the delay time is checked, and it is determined whether or not the set delay time has elapsed since the occurrence of the abnormal signal input. If the delay time has elapsed, the process proceeds to S8 and S9 to perform the first alarm notification operation. This causes the corresponding LED 4a to blink at predetermined intervals, sounds the alarm buzzer 13, and turns on the collective output unit 5 (S9). If not, the process returns to the display mode setting check in S3. The blinking of the LED 4a indicates that the output of the terminal of the corresponding output port 10a is "H-
L ". In S10, it is determined whether the buzzer stop switch 3b is turned on.
The program proceeds to S11, stops the sounding of the alarm buzzer 13 and cancels the batch output, and proceeds to S12. If not turned on, the program proceeds to S12 without stopping.

At S12, a signal input check is performed. If the input of the abnormal signal is continued, the process returns to S8, and the blinking of the LED 4a is continued. If released, the process proceeds to S13 and shifts to the self-holding operation. In the self-holding operation, the blinking cycle of the lamp is changed to, for example, half the blinking cycle of S8, and the second alarm notification operation is performed. If the collective output 12 and the alarm buzzer 13 have not been released, the sound and the output continue to be output.

Then, in S14, a signal input check is performed.
If there is an abnormal signal, the process returns to S8, where the blinking cycle of the lamp is returned, and if the buzzer is stopped, the sound is sounded. If there is no abnormal signal, the process proceeds to S15 to determine whether the lamp test switch 3a and the buzzer stop switch have been pressed simultaneously. If not, the process returns to S13. If the switch has been pressed, the process proceeds to S16 to perform a reset operation. Sound of alarm buzzer,
Release all of the batch output, and return to S2.

As described above, it is easy to distinguish whether an alarm is being input continuously, whether an alarm has occurred but has already been canceled, or whether it is an alarm in the operation display mode because the lamp display is different. Yes, and can respond appropriately to alarms. In addition, since the alarm is held, even if an abnormality occurs while the manager is absent and the nature recovers, the fact that the nature has recovered can be grasped, which can be used for early detection of the abnormality.

Further, even if the alarm is released by the alarm self-holding function and the error is cleared, if the error occurs again, the alarm display changes without the alarm input delay function being activated. Can be known without delay, and it is possible to appropriately respond to an urgent warning.

Further, since the alarm notification operation by the alarm self-holding function is released, that is, the alarm is reset by simultaneously operating the lamp test switch and the buzzer stop switch, the operation is complicated and mistaken for a buzzer stop operation. This reset operation does not require a dedicated switch, so that the configuration of the switch unit can be simplified. In the above embodiment, the flow of operation for one abnormal signal input has been described. However, the same operation is performed for a plurality of abnormal signal inputs. Operating individually, the alarm buzzer operates on at least one abnormal signal input.

[0020]

As described in detail above, according to the first aspect of the present invention, if an abnormality occurs again while the abnormality is canceled and the alarm operation by the alarm self-holding function is started, the alarm display changes. Therefore, it is possible to know again that the abnormality has occurred, and it is possible to appropriately respond to an urgent warning. In addition, since the alarm is held, even if an abnormality occurs while the manager is absent and it recovers naturally, it is possible to grasp that the recovery has been natural, which is useful for early detection of the abnormality.

According to the second aspect of the invention, in addition to the effects of the first aspect, it is possible to determine whether the alarm is continuing abnormally, whether an abnormality has occurred but the alarm has been cleared, and the operation display mode. Since the notification operation differs depending on the alarm, the alarm can be easily distinguished, and the alarm can be dealt with appropriately.

According to the invention of claim 3, according to claim 1 or 2,
In addition to the effect of the above, since the alarm notification operation by the alarm input delay function is canceled, that is, the alarm is reset, the lamp test switch and the buzzer stop switch are operated simultaneously,
The operation is complicated, and there is no mistake in the operation of the buzzer and no erroneous operation. In addition, since this reset operation does not require a dedicated switch, the configuration of the switch unit can be simplified.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of an alarm device showing an example of an embodiment of the present invention.

FIG. 2 is a flowchart showing a flow of operations and operations in FIG. 1;

FIG. 3 is a relay sequence diagram showing a conventional alarm device.

[Explanation of symbols]

1. control unit, 2. alarm detection unit, 3. switch unit,
4 ... Lamp display section, 5 ... Output section, 6 ... Setting section, 1
2 ··· Batch output section, 13 ··· Alarm buzzer.

Claims (3)

[Claims] 1. An alarm input delay function for operating a notification means to perform a first alarm notification operation only after an abnormal signal is input for a predetermined time or more, and the first alarm function when the abnormal signal input is released.
An alarm device having an alarm self-holding function that shifts from an alarm notification operation to a second alarm notification operation and continues the alarm notification operation, wherein a notification operation between the first alarm notification operation and the second alarm notification operation is different, An alarm device that ignores the alarm input delay function and enters the first alarm notification operation when an abnormal signal is input again during the second alarm notification operation. 2. An operation display mode for operating an alarm means in synchronism with the input of an abnormal signal, wherein an alarm operation in the operation display mode includes a first alarm operation and a second alarm operation. The alarm device according to claim 1, which is different from any of the above. 3. The alarm means includes a lamp and a buzzer, and includes a lamp test switch for testing the alarm means and a stop switch for stopping the buzzer from sounding, and resetting the second alarm notification operation by the alarm self-holding function. 3. The alarm device according to claim 1, wherein the step (b) is performed by simultaneously operating the lamp test switch and the buzzer stop switch.