JPH07162380A - Alarm device - Google Patents

Abstract

PURPOSE:To provide an alarm device capable of recording the occurrence or restoration of a fault by an external alarm monitor device even if the fault of a transmission equipment is instantaneous and it can immediately be restored. CONSTITUTION:This device is provided with a means for outputting the occurrence or restoration of the fault in the transmission equipment or a transmission line to the external alarm monitor device 14 as an alarm signal and a means for outputting information on the occurrence or restoration of the fault to the external alarm monitor device 14 with time information as serial signals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission device such as a microwave radio transmission device or a PCM optical transmission device, or a transmission line connecting these transmission devices. The present invention relates to an alarm device that detects occurrence or restoration and outputs it as an alarm signal to an external alarm monitoring device.

[0002]

2. Description of the Related Art A conventional alarm device will be described with reference to FIG. Reference numeral 61 is, for example, a PCM optical transmission device, and an alarm device 62 is added to the transmission device 61. Alarm device 62
The relay 63 is built in, and when a failure occurs in the transmission device 61 or the like, the contact of the relay 63 is closed and an alarm signal is sent to the external alarm monitoring device 65 through the output line 64.

FIG. 7 is a circuit diagram schematically showing another example of the conventional alarm device.

When a failure occurs in a transmission device (not shown) or the like, a failure detection signal is applied to the gate of the transistor T from the input terminal IN of the alarm device 71. When a failure detection signal is applied to the gate, the transistor T becomes active,
A current flows through the relay 72 and its contact 72A closes. When the contact 72A of the relay 72 is closed, an alarm signal is sent to the external alarm monitoring device 74 through the output line 73. In the external alarm monitoring device 74, the photo coupler 75 receives the alarm signal.
Operates, and an alarm signal is taken in from the terminal 76.

As described above, the conventional alarm device has only the function of outputting an alarm signal to an external alarm monitoring device.

On the other hand, in the external alarm monitoring device, an alarm signal is sent from each of a number of transmission devices. Therefore, the alarm monitoring device is configured to connect to one transmission device in order by switching and receive the alarm signal from the connected transmission device.

As described above, since the external alarm monitoring device monitors a large number of transmission devices, the time interval in which one transmission device is in a connected state is long and the time in a connected state is short.

Therefore, when the failure continues for a long time, the alarm signal is surely captured by the alarm monitoring device. However, in the event that a failure of a transmission device or the like is instantaneous and recovers quickly, even if an alarm signal is issued due to the failure, at that time,
If the transmission device and the external alarm monitoring device are not connected,
The generated alarm signal is not captured by the alarm monitoring device.

[0009]

As described above, the conventional alarm device has only the function of outputting an alarm signal to the external alarm monitoring device, so that, for example, a failure occurs instantly and the alarm is recovered immediately. , The alarm signal sent from the transmission device may not be recorded by the external alarm monitoring device. The present invention, even if the failure or restoration of the transmission device is instantaneous,
An object of the present invention is to provide an alarm device in which the occurrence and restoration of a failure can be recorded by an external alarm monitoring device.

[0010]

SUMMARY OF THE INVENTION The present invention provides an alarm device having means for outputting, as an alarm signal, information of occurrence or restoration of a failure of a transmission device or a transmission line connecting the transmission devices to an external alarm monitoring device. Means for adding time information to the information on occurrence or recovery of the failure and outputting it as a serial signal to the external alarm monitoring device is provided.

[0011]

According to the above alarm device, a means for outputting the information on the occurrence or recovery of the failure to the external alarm monitoring device as a serial signal together with the time information is added. ◎
Therefore, the occurrence or restoration of the failure of the transmission device or the transmission line is instantaneous, and the occurrence or restoration of the failure is possible even when the occurrence or restoration is not connected to the external alarm monitoring device.
Furthermore, the time can be reliably detected by an external alarm monitoring device.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG.

When a failure occurs in the transmission device or the like, or when the device recovers, a detection signal for detecting the failure is input to the input terminal IN of the alarm device 11. When the detection signal is input to the input terminal IN, the transistor T becomes conductive and the relay-1
2 carries current, and relay contacts 12A and 12B
Closes. When the relay contact 12A is closed, an alarm signal is sent to the external alarm monitoring device 14 through the output line 13.

Further, by closing the relay contact 12B, a detection signal for detecting the occurrence or restoration of a failure is fetched by the one-chip microcomputer 15, for example. 1 chip microcomputer 1
As shown in FIG. 2, reference numeral 5 designates, for example, an input device PIO having a plurality of input terminals arranged in parallel, an output device SIO for serially outputting a signal, a memory ROM for storing a calculation program, and fetched information. Memory R to record
AM, real-time device RTC (real-time clock; hardware or software) that provides time information, central processing unit CPU that controls various signal processing
Composed of.

The detection signal for detecting the occurrence or restoration of a failure is
Information on the occurrence or restoration of a failure is fetched into the input terminal of the input device PIO which constitutes the one-chip microcomputer. Then, in the information on the occurrence or restoration of the failure, which is captured in the input terminal, the information of the time when the information is captured is stored in the real time device R
It is added from TC and sent from the output device SIO as a serial output signal to an external alarm monitoring device. The output signal is sent to the external alarm monitoring device by selecting the time when the transmission device and the external monitoring device are connected.

The operation of the one-chip microcomputer 15 (FIG. 1) will be described with reference to FIG.

Therefore, the memory ROM of the one-chip microcomputer 15 incorporates a program for performing the following operations. First, a main processing routine for sending a signal to an external alarm monitoring device will be described.

At step 31, the presence or absence of a signal to be sent to an external alarm monitoring device is detected. If there is a corresponding signal, that signal is output from the output device SIO in step 32.

Next, a routine interrupt processing routine for processing information on the occurrence or restoration of a failure will be described. When a failure or recovery occurs, an interrupt occurs, and in step 33, a plurality of input terminals of the input device PIO are sampled in order. In step 34, the value of the signal obtained from the plurality of input terminals is compared with the value of the signal obtained at the previous sampling for each input terminal. If it is determined in step 35 that the two values are not the same, then in step 36, time information is added to the new value. Then, in step 37, the new value and time information are stored in the memory RAM. If the two values are judged to be the same in step 35, the new value is stored in the memory RAM in step 37.

According to the above configuration, information on the occurrence or restoration of a failure of the transmission device or the like is periodically fetched by the one-chip microcomputer and compared with the value fetched in the previous period.
Then, if there is a change in both values, the name of the changed signal and the time at which it is fetched are temporarily stored in the memory RAM. Then, by using the time until the next information is fetched from the input device PIO, the name of the signal stored in the memory RAM and the time when the signal is fetched, for example, the occurrence or failure classification of failure or the changed time Etc. are sequentially output from the output device SIO under the control of the central processing unit CPU. The signal output from the output device SIO is captured by an external alarm monitoring device as an output signal from the alarm device. The external alarm monitoring device stores the signal sent from the alarm device, outputs the stored information, and performs a process such as printing. The external alarm monitoring device is, for example, a personal computer 41, a floppy disk 42, a printer 43 as shown in FIG.
Etc. Reference numeral 44 is an input line to the personal computer 41.

FIG. 5 shows an example of output from the printer 43 of the alarm monitoring device. As shown in FIG. 5, for example, failure occurrence A and its time, or failure recovery B and its time are printed. In the above configuration, an alarm device added to a transmission device or the like temporarily records information using, for example, a one-chip microcomputer, and outputs it at a low speed. Therefore, the alarm monitoring device does not necessarily require high-speed processing capability.

According to the above-described embodiment of the present invention, an alarm signal associated with the occurrence or restoration of a failure is output to an external alarm monitoring device, and at the same time, the occurrence or restoration of the failure, its time, etc. are recorded or output. is doing. Therefore, even if the occurrence or recovery of a failure is instantaneous or occasional, the information can be reliably sent to an external alarm monitoring device, and the alarm monitoring device can also ensure the information. Can be recorded on.

[0023]

According to the present invention, even if a failure or recovery of a transmission device or a transmission line is instantaneous, for example, the status of the failure or recovery and the time of the failure can be assured to an external alarm monitoring device. Can be sent to.

[Brief description of drawings]

FIG. 1 is a schematic circuit configuration diagram illustrating an embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration of a one-chip microcomputer used in the present invention.

FIG. 3 is a diagram illustrating an operation of a one-chip microcomputer used in the present invention.

FIG. 4 is a diagram for explaining the operation of the present invention and is a diagram showing a partial configuration of an alarm monitoring device.

FIG. 5 is a diagram illustrating a pattern printed by the printer of the alarm monitoring device.

FIG. 6 is a diagram illustrating a conventional example.

FIG. 7 is a diagram illustrating another example of the related art.

[Explanation of symbols]

 11 ... Alarm device 12 ... Relay 13 ... Output line 14 ... Alarm monitoring device 15 ... 1-chip microcomputer

Claims (1)

[Claims] 1. An alarm device having means for outputting, as an alarm signal, information of occurrence or restoration of a failure of a transmission device or a transmission line connecting the transmission devices to an external alarm monitoring device. An alarm device comprising means for adding time information to information and outputting it as a serial signal to the external alarm monitoring device.