JP2885109B2 - Alarm information collection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm information collecting system for collecting alarm information of a line and a plurality of child devices to a parent device.

[0002]

2. Description of the Related Art In a conventional alarm information collecting system, a parent device always polls a child device at a constant period to collect and monitor alarm and status information generated in the child device. For example, Japanese Unexamined Patent Publication No. Hei 5-173839 discloses a configuration in which a monitored device (child device) is configured so that the monitoring device can know the history (temporal transition) of an alarm occurrence state in the monitored device. There has been proposed an alarm information collection method including an alarm information buffer for accumulating alarm information, and transmitting all alarm information accumulated in the alarm information buffer to the monitoring device when an alarm information collection request is issued from the monitoring device (parent device). .

[0003]

However, in the above-mentioned conventional example, polling is always performed at a constant period even if a number of alarms and state changes occur frequently in the child device.

When collecting alarm and status information according to the polling method, the generated alarm and status change must be stored in the own device unless a request from the parent device comes.

In this case, the newly generated alarm or status change information overwrites the past information because the generated alarm or status change information exceeds the storage capacity of a memory or the like storing the alarm or status change information. This causes a problem that the previously generated alarm and state change information is lost or the latest alarm and state change information is discarded.

In order to solve this problem, if there is a child device in which alarms or status changes frequently occur, control is performed so that a polling cycle for collecting alarm and status information is accelerated for all the child devices. There is a method of doing.

However, when the polling cycle is accelerated for all the child devices, a child device that does not need to be particularly urgently monitored at the parent device (for example, a child device that generates little or no alarm or status change or has no child device). As a result, the time required for monitoring and processing of the device increases, and as a result, the load of monitoring and processing of the child device in the parent device becomes very heavy.

Accordingly, it is an object of the present invention to solve the above-mentioned problems and to prevent all alarms and alarms generated in a child device without excessively increasing the load of monitoring and processing of alarms and status information in a parent device. It is an object of the present invention to provide an alarm information collection method that allows a parent device to reliably collect state change information.

[0009]

In order to achieve the above object, the present invention relates to an alarm information collecting apparatus in which one parent device collects and monitors alarm and status information of a plurality of child devices by polling. Based on the number of alarms and status information collected from the device,
Of information and status information tend to increase or decrease over time.
Predict whether the trend is small or not, and
The present invention provides an alarm information collection method characterized by adaptively and variably controlling a polling cycle for requesting the collection of the alarm and the status information for each of the child devices in accordance with the prediction result of (1 ).

In the present invention, it is preferable to predict a tendency of the alarm and status information to fluctuate from the current number of alarms and status information at the time of sampling and the number of previous alarms and status information at the time of previous sampling. The present invention is characterized in that the current polling cycle is variably controlled.

In a preferred aspect, the information collection method of the present invention is an alarm information collection device in which one parent device collects and monitors alarm and status information of a plurality of child devices by polling, wherein the child device comprises: A request receiving unit that receives an alarm information request signal output from the parent device, and collects and monitors alarms and states in the device.If the received alarm information request signal is a request for the own device, an alarm and An in-device alarm collection unit that outputs status information, and an information transmission unit that transmits the alarm and status information to a parent device, wherein the parent device receives alarm and status information transmitted from the child device A receiving unit that outputs the alarm and status information input from the receiving unit, and a storage unit that stores the alarm and status information input from the receiving unit for each device. The number of alarms and the number of state changes counted are output to the storage unit, and the number of alarms and the number of state changes counted and the number of alarms and the number of state changes of the child device one cycle before input from the storage unit are The alarm status change detection unit that counts the change rate of the number of alarms and the number of status changes of the child device and outputs the change rate of the number of alarms and the number of status changes and the name of the child device, and the number of alarms and the number of status changes If the alarm or state change is predicted to be increasing due to the rate of change of the polling period, a predetermined time corresponding to the change rate of the number of alarms or the number of state changes is subtracted from the current polling cycle for the child device. A signal and a child device name are output, and when it is predicted that the alarm or the state change is on the decrease according to the change rate of the alarm number and the state change number, the alarm number or the state change A polling cycle generation unit that outputs a polling cycle signal and a slave device name obtained by adding a time corresponding to the change rate of the slave device to the current polling cycle, and alarm and status information of the slave device input from the storage unit. An alarm / state monitoring processing unit that monitors and outputs an alarm information request signal for requesting alarm and state information of the child device at the timing of the output polling cycle signal; and an output from the alarm / state monitoring processing unit. And a transmission unit for transmitting the alarm information request signal.

[0012]

According to the present invention, the polling period at which the parent device collects alarm and status information for a child device whose alarm or status change is increasing or occurring frequently can be shortened, and conversely, the alarm or status change can be performed. The polling cycle can be delayed for a child device in which the status change is small, little, or not occurring at all, so that the load on the monitoring and processing of the alarm and the status information of the child device in the parent device can be increased without increasing the load. Alarm and status information of the device can be monitored.

Therefore, according to the present invention, even when a large number of alarms occur in the child device, the parent device can reliably collect all alarm information generated in the child device.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an alarm information collecting system according to one embodiment of the present invention.

FIG. 1 shows a monitoring system composed of one parent device 1 and three child devices 2, 3, and 4. In addition, since all the child devices 2 to 4 have the same configuration, only the configuration of one child device 2 is illustrated in FIG.

Referring to FIG. 1, child devices 2 to 4 receive alarm information request signal S1 output from parent device 1 and request receiving section 21 for outputting request signal S201, and generate a request signal in its own device. The collected alarm and status information is collected and monitored, and when the request signal S201 is a request for the own device, the in-device alarm collection unit 22 that outputs the alarm and status information S2, and the alarm and status information S2 to the parent device 1. Information transmitting unit 23 to transmit
And

The parent device 1 comprises a receiving section 11, a storage section 12, an alarm state change detecting section 13, a polling cycle generating section 14, an alarm / state monitoring processing section 15, and a transmitting section 16.

The receiving unit 11 receives the alarm and status information S2 output from the child devices 2 to 4.

The storage unit 12 stores the alarm and status information generated by each of the slave devices 2 to 4 input via the reception unit 11, and also saves the history of the number of alarms and the number of status changes.

The alarm state change detecting section 13 counts the number of alarms and the number of state changes, and outputs the number of alarms and the number of state changes S3.
Is output to the storage unit 12. Also, the alarm state change detection unit 1
3 inputs the number of alarms and the number of state changes S4 collected one cycle ago from the storage unit 12, and calculates the number of alarms and the number of state changes collected before one cycle and the latest number of alarms and the number of state changes. The change rate S5 of the number of state changes is obtained and output, and the child device name S6 is output.

The polling cycle generator 14 receives the number of alarms output from the alarm status change detector 13 and the rate of change S5 of the number of status changes and, for example, if the number of alarms or status changes is increasing in the child device. If it is predicted, a polling period signal S7 obtained by subtracting a predetermined time determined according to the change rate S5 of the number of alarms and the number of state changes from the current polling period of the child device to shorten the polling interval.
Is output.

On the other hand, when it is predicted that the number of alarms or state changes is reduced in the child device, the polling cycle generation section 14 changes the number of alarms and the number of state changes S5.
Is added to the polling cycle of the slave device to increase the polling interval, and the polling cycle signal S7 is output. Further, the polling cycle generator 14 also outputs the child device name S6.

The alarm / status monitoring processing unit 15 includes a storage unit 12
While monitoring the alarm and status information S8 input from the
Based on the polling cycle signal S7 and the child device name S6, the alarm information request signal S1 for the child devices 2 to 4 is output.

The transmitting section 16 is provided with an alarm / status monitoring processing section 15
Is transmitted to the child device. In addition, the parent device 1 and the child devices 2 to 4 communicate with the alarm and status signal S2.
And are connected to each other via a predetermined transmission medium through which the alarm information request signal S1 and the like are transmitted.

Next, the operation of this embodiment will be described with reference to FIG.
And the timing chart of the polling cycle of FIG. 2B.

FIG. 2A shows the number of alarms or status changes counted based on alarms and status information S2 collected from one of the child devices 2 to 4 monitored by the parent device 1. The number of alarms or the number of state changes is in a tendency to increase in the form of a bar graph (the horizontal axis represents time).

The timing chart of the polling cycle shown in FIG. 2B is a polling cycle of the alarm information request signal S1 output from the parent device 1 to the child device. Note that FIG.
The horizontal axis of (B) indicates time, and corresponds to the time on the horizontal axis of FIG.

Referring to FIG. 2B, the polling period of section T _n-1 is such that both the number of alarms or the number of state changes occurring in section T _n-2 and section T _{n- 3} are “0”, ie, Change rate = 0
Therefore, the period is the same as that of the sections T _n−2 and T _n−3 .

The interval polling period of T _n, since the interval T _n-1 and the alarm number generated in the interval T _n-2 or a state change the number of the rate of change is [Delta] y = X, time corresponding to the rate of change X The minute α is subtracted from the polling cycle of the section T _n−1 .

Similarly, the polling cycle of the section T _{n + 1} is:
Since the alarm number or state change count rate of change occurs in the interval T _n and the section T _n-1 is a [Delta] y = X, subtracting the time duration α corresponding to the rate of change X from the polling period of the interval T _n.

The polling cycle of the section T _{n + 2} is the section T _{n + 1}
And the rate of change of the alarm number or state change number generated in the interval T _n is for a [Delta] y = X-2, subtracting the time duration β in accordance with the change rate X-2 from the polling period of the interval T _{n + 1.}

The polling cycle of the section T _{n + 3} is _{equal to} the section T _{n + 2}
And the rate of change in the number of alarms or the number of state changes that occurred in the section T _{n + 1} is Δy = 0, which is the same as the polling cycle in the section T _{n + 2} .

As described above, in the section from T _{n−2 to} T _{n + 1} , the number of alarms or the number of state changes is predicted to be increasing, so the time corresponding to the change rate is set to one cycle earlier. Subtracting from the polling cycle, the polling cycle becomes gradually shorter. Subsequently, even if the number of alarms or the number of state changes disappears (that is, the change rate = 0), the sections T _{n + 2} and T where the large number of alarms or the number of state changes are still continued
_{For n + 3} , polling is also performed at a short period.

Next, the operation of this embodiment will be described with reference to the graph of FIG. 3A and the timing chart of the polling cycle of FIG. 3B.

FIG. 3A shows the number of alarms or status changes counted in a bar graph in a time series based on the alarm and status information S2 collected from the child device. The case where the number of alarms or the number of state changes in one of the child devices 2 to 4 is decreasing.

The timing chart of the polling cycle shown in FIG. 3B shows the polling cycle of the alarm information request signal S1 output from the parent device 1 to the child device. Note that FIG.
The horizontal axis of (B) indicates time, and corresponds to the time on the horizontal axis of FIG.

The polling cycle of the section T ″ _n is the same as the section T ″
_Since both the number of alarms or the number of state changes that occurred in _n-1 and the section T ″ _n−2 are the same, ie, the change rate = 0, T ″
_n-1 and T " _n-2 .

The polling cycle of the section T ″ _{n + 1} is Δy = −W because the change rate of the number of alarms or the number of state changes that occurred in the section T ″ _n−1 and the section T ″ _n is ΔW = −W. Is added to the polling cycle of the section T ″ _n .

Similarly, the polling period of the section T ″ _{n + 2} changes because the change rate of the number of alarms or the number of state changes that occurred in the section T ″ _n and the section T ″ _{n + 1} is Δy = −W. Rate-
The time γ corresponding to W is added to the polling cycle of the section T ″ _{n + 1} .

In the polling cycle of the section T ″ _{n + 3} , the change rate of the number of alarms or the number of state changes generated in the sections T ″ _{n + 1} and T ″ _{n + 2} is Δy = − (W−2). Therefore, the time δ according to the change rate − (W−2) is added to the polling cycle of the section T ″ _{n + 2} .

As described above, T ″ _{n−1 to} T ″ _{n + 1}
Since the number of alarms or the number of state changes is predicted to decrease in the section of, the time corresponding to the change rate is added to the polling cycle one cycle before, and the polling cycle becomes longer.

As described above, according to the present embodiment, the number of alarms and the number of status changes in the child device are predicted to increase or decrease, and the polling requesting the alarm and status information output from the parent device is performed. By adaptively changing the cycle, even in a child device where alarms or state changes occur frequently, newly generated alarms or state change information exceeds the storage capacity of a memory or the like storing alarms or state change information. Is prevented from being overwritten by past information, and the latest alarm and status change information is not discarded in the child device, and the parent device can reliably detect all alarms and status change information generated in the child device. Can be collected.

Although the present invention has been described based on the above embodiment, the present invention is not limited to the above embodiment, but includes various embodiments according to the principle of the present invention.

[0045]

As described above, according to the present invention,
By predicting the increasing or decreasing trend of the number of alarm occurrences and the number of state changes, the cycle of requesting the alarm and the state information is changed, and the alarm or the state change information is generated in the device where the alarm or the state change occurs frequently. Because the storage capacity of the stored memory or the like has been exceeded, the newly generated alarm or state change information is overwritten with the past information, and the previously generated alarm and state change information are not lost. In addition, there is an effect that the parent device can surely collect all the generated alarms and state change information without discarding the latest alarms and state change information.

Further, according to the present invention, a status request is issued at a short interval to a device in which alarms and status changes frequently occur, and no alarm or status change occurs or the number of cases is small. By increasing the interval between status requests to the device, the load on the alarm and status monitoring processing unit can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram of an alarm information collection method according to an embodiment of the present invention.

FIG. 2 is a timing chart of an alarm information collecting method according to an embodiment of the present invention.

FIG. 3 is a timing chart of a warning information collecting method according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Parent apparatus 2, 3, 4 Child apparatus 11 Receiving part 12 Storage part 13 Alarm state change detecting part 14 Polling period generating part 15 Alarm / state monitoring processing part 16 Transmitting part 21 Request receiving part 22 In-device alarm collecting part 23 Information transmission Department

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G08B 26/00

Claims (3)

(57) [Claims] 1. An alarm information collection device in which one parent device collects and monitors alarm and status information of a plurality of child devices by polling, wherein the number of the alarm and status information collected from the child devices is
Based on the alarm and status information generated by the child device
Is the change increasing or decreasing in chronological order?
Predict the fluctuation trend, and according to the prediction result of the fluctuation trend,
A polling cycle for requesting the collection of the alarm and the status information for each of the child devices. 2. A child from the current number of time count and the previous sampling time of sampling of the alarm and status information
Predicts the variation trend of the number of alarms and status information of the device, alarm information collection method according to claim 1, wherein the variably controlling the current polling period for the child device based on the <br/> predicted value . 3. An alarm information collection device in which one parent device collects and monitors alarm and status information of a plurality of child devices by polling, wherein the child device receives an alarm information request signal output from the parent device. A request receiving unit that collects and monitors alarms and states in the own device, and outputs an alarm and status information when the received alarm information request signal is a request for the own device. An information transmitting unit that transmits the alarm and status information to a parent device; and a receiving unit that receives the alarm and status information transmitted from the child device and outputs the information to the device, A storage unit for storing the alarm and status information input from the receiving unit for each device, and counting the number of alarms and status changes based on the alarm and status information input from the receiving unit, and counting the number of alarms and status changes. Is output to the storage unit, and the number of alarms and the number of status changes of the child device according to the counted number of alarms and the number of status changes input from the storage unit and the number of alarms and the number of status changes of the child device one cycle before are input from the storage unit. An alarm state change detection unit that counts the change rate and outputs the change rate of the number of alarms and the number of state changes and the child device name, and the alarm or the state change is increasing due to the change rate of the number of alarms and the number of state changes. If it is predicted that there is, a predetermined period of time corresponding to the change rate of the number of alarms or the number of state changes is subtracted from the current polling cycle for the child device, and a polling cycle signal and a child device name are output. When it is predicted that the alarm or the state change is decreasing according to the change rate of the number of cases and the number of state changes, a time corresponding to the change rate of the number of alarms or the number of state changes is given to the child device. A polling cycle generator that outputs a polling cycle signal in addition to the current polling cycle and a slave device name; and monitors the alarm and status information of the slave device input from the storage unit, and the timing of the output polling cycle signal. An alarm / status monitoring processing unit that outputs an alarm information request signal requesting alarm and status information of the child device; and a transmission unit that transmits an alarm information request signal output from the alarm / status monitoring processing unit. An alarm information collecting method characterized by having.