JP3368459B2 - Alarm collection system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm collection system for collecting alarm signals due to occurrence of an abnormality in various devices. An alarm collection system that collects and monitors alarm signals based on the detection of abnormalities in various parts of various devices is provided to avoid system down of various devices, and is easy even when the scale of such various devices is expanded. It is demanded that it can be monitored. 2. Description of the Related Art FIG. 3 is an explanatory view of a conventional example using individual latches, wherein 21-1 to 21-n are device units, 22 is an alarm collection processing unit, 23 is a monitoring unit, and 24-1 to 24. -N indicates a unit corresponding unit, 25 indicates an OR circuit (OR), 26 indicates a latch circuit, and 27 indicates a connection terminal (connector). A data communication device or the like is constituted by a plurality of device units 21-1 to 21-n. Each of the device units 21-1 to 21-n performs data processing and the like, and operates abnormally and abnormally. It has a function to detect the occurrence of abnormalities such as abnormal current, abnormal temperature rise, abnormal data error rate, etc., and inputs an alarm signal due to abnormal detection to the unit corresponding units 24-1 to 24-n of the alarm collection processing unit 22. As shown in FIG. The alarm signals from the device units 21-1 to 21-n are latched by the latch circuits 26 of the unit corresponding units 24-1 to 24-n, and are transmitted via the OR circuit 25 to the monitoring unit 2.
3 is sent. This monitoring unit 23 is provided by the alarm collection processing unit 22
It may be installed at a position distant from the device, and can also collect an alarm signal from another alarm collection processing unit (not shown). FIG. 4 is a diagram for explaining the operation of the conventional example, and (a) to (f) show an example of signals a to f of each section in FIG. For example, when the occurrence of an abnormality in the device unit 21-1 is detected, "1" indicating that the state has changed from the non-warning state to the warning state.
Is sent out as shown in (a), the latch signal is latched by the latch circuit 26 of the unit corresponding unit 24-1 and the output signal c becomes "1" as shown in (c). The output signal c is sent to the monitoring unit 23 via the OR circuit 25 as an alarm signal f shown in FIG. When an alarm signal b due to the detection of an abnormality in the device unit 21-2 is transmitted as shown in FIG. 2B, the output signal d is latched by the latch circuit 26 of the unit corresponding unit 24-2. The result is as shown in FIG. This output signal d is also sent to the monitoring unit 23 via the OR circuit 25.
, But overlaps with the alarm signal a. When the latch circuit 26 is reset by a reset signal e from the monitoring unit 23 or a reset signal e shown in FIG. 4E formed in the alarm collection processing unit 22, the unit corresponding units 24-1 and 24-2 are reset. 24-2 latch circuit 2
Since the output signals c and d of “6” become “0”, the alarm signal f of “1” sent to the monitoring unit 23 becomes “0”. Therefore, an alarm signal from the next device unit can be collected and sent to the monitoring unit 23. FIG. 5 is an explanatory diagram of a conventional example using a common latch. Reference numerals 31-1 to 31-n denote device units, 32 denotes an alarm collection processing unit, 33 denotes a monitoring unit, 34 denotes an OR circuit (OR),
35 is a latch circuit, and 36 is a connection terminal. The device units 31-1 to 31-n include a configuration for detecting the occurrence of an abnormality and outputting an alarm signal, similarly to the device units 21-1 to 21-n in FIG. The data is input to the latch circuit 35 via the OR circuit 34 of the alarm collection processing unit 32 and latched, and the latch output is sent to the monitoring unit 33 as an alarm signal. FIG. 6 is a diagram for explaining the operation of the conventional example, and shows an example of a signal of each section in FIG. For example, the device unit 31-
When the alarm signal A due to the detection of the occurrence of an abnormality in step 1 changes to "1" by shifting from the non-alarm state to the alarm state as shown in FIG. 6A, the output signal C of the OR circuit 34 becomes (C) is obtained. The output signal C is latched by the latch circuit 35, and the latch output signal is sent to the monitoring unit 33 as an alarm signal E. When the latch circuit 35 is reset by the reset signal D, the alarm signal E sent to the monitoring unit 33 is as shown in FIG. When the alarm signal B of "1" due to the detection of an abnormality in the device unit 31-2 is transmitted as shown in FIG. 6B, the alarm signal A is duplicated with the alarm signal A from the device unit 31-1. Becomes The monitoring units 23 and 33 shown in FIG. 3 or FIG.
Upon receiving an alarm signal from the alarm collection processing units 22 and 32,
For example, detailed information on the occurrence of an alarm is requested to the device unit or the like, the alarm occurrence state is recognized based on the detailed information, and when a serious failure occurs, a maintenance person is dispatched to perform recovery processing. In the case of monitoring the state of the communication line, an instruction for switching between the working line and the standby line can be given based on detailed information or the like. Similarly, in the case of monitoring a device having a duplex configuration, an instruction to switch between a working device and a backup device can be given in accordance with detailed information and the like. [0011] The alarm collection processing unit 22,
32 are connected to the connection terminals 27 and 36 of the device unit 21-.
1 to 21-n and 31-1 to 31-n, and the alarm collection processing units 22 and 32 monitor the collected alarms for the monitoring units 23 and 33.
And requires the number of connection signal lines corresponding to the number of device units. Therefore, in a system having a large number of device units, there is a problem that the number of connection signal lines becomes large and the configuration becomes complicated. Further, the number of device units is increased with the expansion of the system scale. Since the additional device unit is also connected to the alarm collection processing units 22 and 32, the alarm collection processing units 22 and 32 have Extra terminals for connection 27 and 36 are provided in advance, assuming the number of additional device units. In the case of the alarm collection processing unit 22 of an individual latch, the latch circuit 26 is provided together with the terminal 27 for connection. It is necessary to provide extra. Therefore, there is a problem that the configuration of the alarm collection processing unit is complicated and the cost is increased. In the above-mentioned conventional example, FIG.
As shown in (1), when an alarm signal is sent from another device unit while an alarm signal is sent from a certain device unit, the alarm collection processing units 22 and 32 send the alarm signals to the monitoring units 23 and 3.
3 is sent as one alarm signal, and there is a problem that the monitoring units 23 and 33 cannot identify whether the signals are alarm signals from a plurality of device units. An object of the present invention is to simplify the configuration and to make it possible to identify alarm signals from a plurality of device units. An alarm collection system according to the present invention is an alarm collection processing unit for collectively sending alarm signals from a plurality of device units 1-1 to 1-n to a monitoring unit 3. 2
A plurality of device units 1-1 to 1-n are provided with a detection unit 5 that outputs an alarm signal upon detection of an abnormality, and a signal bus 4 that pulsates the alarm signal from the detection unit 5 to output a signal. The alarm collection processing unit 2 is connected to the plurality of device units 1-1 to 1-n via a signal bus 4 and receives a pulse signal received via the signal bus 4. It has a configuration for sending an alarm signal to the monitoring unit 3. Since each of the device units 1-1 to 1-n is only connected to the signal bus 4, connection at the time of expansion is easy, and the alarm collection processing unit 2 has a configuration in which one signal is accommodated. , And a simple configuration. The alarm collection processing unit 2 latches the pulsed alarm signal received via the signal bus 4 and sends it to the monitoring unit 3, and after sending the pulsed alarm signal to the monitoring unit 3 from the latch unit 7, A reset section 8 for resetting the latch section 7
And FIG. 1 is an explanatory diagram of an embodiment of the present invention, wherein alarm signals from a plurality of device units 1-1 to 1-n are collected in an alarm collection processing unit 2 and monitored. 3 is an alarm collection system for sending to the device units 1-1 to 1-1.
1-n indicates a packaged configuration for processing data or the like, or a configuration unit of a certain device such as a unit configured by inserting a board into a plurality of slots,
The apparatus includes a detection unit 5 for detecting the occurrence of an abnormality in each unit in each of the device units 1-1 to 1-n, and a differentiating circuit 6 for differentiating an alarm signal from the detection unit 5 into a pulse. The alarm collection processing unit 2 latches the pulsed alarm signal input via the signal bus 4 by the latch unit 7, sends the latched output to the monitoring unit 3 as an alarm signal, and resets the latch unit 7 by the reset unit 8. Reset. The detecting unit 5 of the device units 1-1 to 1-n
Depending on the configuration, means for resetting the detection unit 5 may be provided, and a configuration for sending an alarm signal from the detection unit 5 as an individual alarm to the monitoring unit 3 or another monitoring unit as indicated by a dotted line is added. It is also possible. Also device unit 1
-1 to 1-n and the alarm collection processing unit 2 are connected via the signal bus 4, so that the additional device unit 1- (n +
In the case of m), since it is only necessary to connect to the signal bus 4, expansion of the system scale can be easily dealt with. Further, the alarm collection processing unit 2 has only to provide one terminal for connection to the signal bus 4, so that the configuration is simplified. FIG. 2 is a diagram for explaining the operation of the embodiment of the present invention.
For example, when the detection unit 5 of the device unit 1-1 detects an abnormality and sends out an alarm signal, the alarm signal is differentiated and pulsed by the differentiating circuit 6, and a pulsing alarm at the rising point of the alarm signal is generated. Signal. When the detection unit 5 of the other device unit 1-2 detects the occurrence of an abnormality and outputs an alarm signal while the alarm signal is being output, the alarm signal is differentiated by the differentiating circuit 6 into a pulsed alarm signal. . Therefore, the pulsed alarm signal input to the alarm collection processing unit 2 via the signal bus 4 includes the pulsed alarm signal from the device unit 1-1 and the device unit 1-2.
And a pulsed alarm signal from Then, the signal is latched by the latch unit 7 of the alarm collection processing unit 2 and transmitted to the monitoring unit 3 as a pulsed alarm signal. The latch section 7 is reset by a reset signal from the reset section 8. The reset section 8 inverts the pulsed alarm signal input to the latch section 7 to form a reset signal, and its rising timing. With latch part 7
Is shown in the case of a configuration for resetting. The detecting unit 5 of the device units 1-1 and 1-2
When the alarm signal is transmitted once and the alarm signal is continuously transmitted, the reset signal from the device units 1-1 and 1-2 or from the alarm collection processing unit 2 or the monitoring unit 3 is input to output the alarm signal. Reset state. Note that the detection unit 5
Various configurations can be applied, such as a configuration that is automatically reset by sending an alarm signal, and a configuration that automatically stops sending an alarm signal when an abnormal state is restored. The present invention is not limited to the above-described embodiment, but can be variously modified.
For example, the reset unit 8 of the alarm collection processing unit 2 may be configured to delay the pulsed alarm signal input to the latch unit 7 by a time corresponding to the pulse width to form a reset signal, or A configuration in which the reset signal is formed based on the output signal is also possible. It is also possible to provide a buffer or a driver for transmitting a pulsed alarm signal from the differentiating circuit 6 of each device unit 1-1 to 1-n to the signal bus 4. As described above, according to the present invention, the detection unit 5 of each of the plurality of device units 1-1 to 1-n detects abnormal operation voltage, abnormal operation current, abnormal temperature rise, and error. When various abnormalities such as abnormalities in the rate are detected, an alarm signal is output, pulsed by the differentiating circuit 6, and the pulsed alarm signal is input to the alarm collection processing unit 2 via the signal bus 4, and the alarm collection processing unit Numeral 2 is for sending the pulsed alarm signal collected via the signal bus 4 to the monitoring unit 3. Even when a plurality of device units are generating alarm signals, they are duplicated by pulsing. Therefore, the monitoring unit 3 can reliably detect the number of generated alarm signals. Further, as described above, the alarm collection processing section 2 only needs to provide one connection terminal for the plurality of device units 1-1 to 1-n, so that the device configuration is simplified. Cost can be reduced. In addition, since the additional device unit only needs to be connected to the signal bus 4, there is an advantage that the expansion of the system scale can be easily dealt with.

[Brief description of the drawings] FIG. 1 is an explanatory diagram of an embodiment of the present invention. FIG. 2 is an operation explanatory diagram of the embodiment of the present invention. FIG. 3 is an explanatory diagram of a conventional example using individual latches. FIG. 4 is an operation explanatory diagram of a conventional example. FIG. 5 is an explanatory diagram of a conventional example using a common latch. FIG. 6 is an operation explanatory diagram of a conventional example. [Explanation of symbols] 1-1 to 1-n device unit 2 Alarm collection processing unit 3 Monitoring section 4 signal bus 5 Detector 6 Differentiating circuit 7 Latch section 8 Reset section

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G08B 25/00 510 G08B 26/00 H04L 12/40

Claims (1)

(57) [Claims] [Claim 1] A plurality of alarm collection processing units connected to a monitoring unit
Alarm collection by connecting with other equipment units via signal bus
In the system, the device unit outputs an alarm signal when an abnormality is detected.
And a warning signal from the detection
And a differentiating circuit for sending the signal to the signal bus, wherein the alarm collection processing unit receives the signal via the signal bus.
Latch the pulsed alarm signal from the device unit
A latch unit for sending out to the monitoring unit; and
After sending the pulsed alarm signal to the monitoring unit,
An alarm collection system , comprising: a reset unit for resetting .