JPH1011681A - Method and system for facility abnormality alarm - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent not only spreading to the worst condition such as a fire but also the unexpected operation stop of facilities, by exactly grasping the presence/absence of abnormality in facilities. SOLUTION: While using an optical fiber type temperature measuring means 3 provided with an optical fiber so as to detect rear scattered light generated at this optical fiber through an optical time area reflection measurement method, to measure the temperature from Stokes light and anti-Stokes light and to convert it into temperature data, the temperature data of equipment rooms 1A-1N, where facilities such as data communication equipment are installed, or the facilities themselves are measured and these measured temperature data are time sequentially stored in a storage part 12 in prescribed format. These stored data are satistically processed by an operation part 14 and patterned, and a standard pattern set within normal range is automatically prepared. When automatically updating this standard pattern at prescribed time intervals, the change of time sequential pattern is analyzed by an analytic part 15, the presence / absence of abnormality is examined and the examined result is transmitted to the prescribed destination to notify such as a block control panel 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for detecting abnormalities in equipment using, for example, the temperature of the equipment itself such as data communication equipment, control equipment, various equipment installed in a substation or the space in which the equipment is installed as a parameter. Monitor for presence, and
The present invention relates to an equipment abnormality alarm method and an equipment abnormality alarm system that notify a predetermined location when there is an abnormality.

[0002]

2. Description of the Related Art Conventionally, an equipment abnormality alarm method generally monitors a current and / or a voltage flowing through a power cable or a communication cable to equipment installed in a specific space, and monitors the current and the current. And / or to judge the presence or absence of an abnormality by comparing the voltage value with the set value, and report the result of the judgment to a predetermined location, and the temperature change of the equipment itself or the space is treated as an auxiliary.

[0003]

However, according to the above-mentioned conventional equipment abnormality warning method, the equipment is obviously caused to have an abnormality, which causes the equipment to stop immediately before or after the operation is stopped unexpectedly. In most cases, an abnormal alarm is reported, and the abnormal alarm must be said to be inappropriate and inappropriate. In other words, equipment often fails for other reasons before the current and voltage values flowing through the cable reach anomalies, and the worst case that a fire may occur due to a rise in temperature due to such anomalies It is possible that the damage is so great that it is incomparable to unexpected shutdown of equipment.

[0004] In addition, the space in which this type of equipment is installed is generally adjusted for temperature by an air conditioner or the like, but even in this case, the air conditioner fails or the adjusted temperature is set. If it is inappropriate, there is a risk that the temperature will rise due to the heat released from the operating equipment, causing an abnormality in the equipment or expanding to the worst situation as described above.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and accurately captures the presence / absence of an abnormality in a facility to prevent the unexpected operation stop of the facility as well as the worst-case situation such as a fire. It is an object of the present invention to provide an equipment abnormality alarm method and an equipment abnormality alarm system that can surely prevent the abnormality.

[0006]

In order to achieve the above object, a facility abnormality alarm method according to the first aspect of the present invention is provided.
The temperature data of the space where the specific equipment is installed or the specific equipment itself is stored in a predetermined format in chronological order, the stored data is statistically processed and patterned, and a standard with a normal range is set. A pattern is automatically created, the standard pattern is automatically updated at a predetermined time interval, and at the time of this update, the presence or absence of an abnormality is tested by analyzing a change in a time-series pattern, and the test result is transmitted to a predetermined report destination. The equipment abnormality alarm system according to the invention according to claim 4, wherein a temperature measurement unit that measures a temperature of a space where the specific equipment is installed or a specific equipment itself, A measurement unit that measures the temperature measured by the temperature measurement unit as temperature data a predetermined number of times at predetermined time intervals, and a storage unit that stores the measurement data in time series. A processing unit that statistically processes the stored data to form a standard pattern with a normal range and automatically updates the standard pattern at predetermined time intervals, and a time series when the standard pattern is automatically updated. An analysis unit that analyzes the change in the pattern to test for the presence or absence of an abnormality, and a control unit that controls a transmission processing unit that transmits a result of the test in the analysis unit to a predetermined report destination. Is what you do.

According to the first and third aspects of the present invention, the temperature of the space in which the specific equipment is installed or the temperature of the specific equipment itself is measured and measured as temperature data. The temperature data is stored in a predetermined format in chronological order. The stored data is statistically processed and patterned, and a standard pattern having a normal range is automatically created. The standard pattern is automatically updated at predetermined time intervals. The change in the pattern is analyzed to check for the presence or absence of an abnormality, and the test result is transmitted to a predetermined notification destination set in advance through the transmission processing unit.

As described above, the standard pattern formed by statistically processing the temperature data measured and measured and stored in time series in a predetermined format is analyzed to determine whether there is any abnormality.
In addition, since the risk of fire occurrence is verified and transmitted to the report destination, it is necessary to reliably detect and report any abnormalities in the equipment at an appropriate time compared to the conventional one that uses current and voltage values. It is possible to take appropriate measures before the equipment is unexpectedly shut down, in addition to preventing the worst-case situation in which a fire is caused by a rise in temperature.

As the standard pattern in the equipment abnormality warning method according to the present invention, as described in claim 2, a pattern of an average value of a data group measured over a predetermined number of times at predetermined time intervals and calculated from the data group. By using a pattern created from a standard deviation pattern that sets a normal range, it is possible to further enhance the reliability of the above analysis and test.

[0010] The temperature measuring means in the equipment abnormality alarm method and system according to the present invention may be a thermocouple, a thermistor, a bimetal or the like.
As described in claim 3 or claim 5, an optical fiber laid in a space where a specific facility is installed or in a peripheral portion of the specific facility itself, and a pulsed light from an input end of the optical fiber. Incident on the optical fiber, the backscattered light generated in the optical fiber is received, the backscattered light is detected by an optical time domain reflection measurement method, and the temperature is measured from the ratio of the Stokes light to the anti-Stokes light to obtain the temperature information. When using an optical fiber type temperature measuring means with means for converting into, corrosion resistance, heat resistance, and excellent thermal responsiveness,
Because temperature information is obtained as changes in light intensity and wavelength, it is not affected by electrical influences such as electromagnetic induction and the likelihood of false alarms is extremely low, and it has high safety and flexibility. Therefore, it can be easily laid in any place regardless of the laying place. Furthermore, since a driving power supply is not required, it is basically maintenance-free or very easy to maintain, while achieving a significant cost reduction compared to using other temperature measuring means such as a thermocouple. Thus, the alarm performance of the predetermined equipment abnormality can be further improved.

Further, as a transmission processing unit in the above-mentioned equipment abnormality alarm system, there is provided an automatic transmission device and a report destination storage unit for storing a telephone number of a report destination. Can be automatically and urgently transmitted to a predetermined report destination in the case of an abnormality by using a device configured to be controlled by the control unit.

Further, in the above-mentioned equipment abnormality alarm system, the test results in a plurality of specific spaces are transmitted from each transmission processing unit to a district management panel, which is a predetermined report destination, as described in claim 7, If you have a central management panel that manages information comprehensively by layering the management panel,
It is possible to more appropriately and effectively implement a post-improper measure for the equipment abnormality by double transmitting the emergency equipment abnormality state.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an entire equipment abnormality alarm system for realizing an equipment abnormality alarm method according to the present invention. In the figure, reference numerals 1... Respectively designate specific equipment, for example, data communication devices 2. A machine room unit is divided into a plurality of device rooms 1A, 1B,... 1N, which are optical spaces. 4 are provided, and individual control panels 5 comprising a computer for processing the temperature measured by the optical fiber type temperature measuring means 3 are provided.
Reference numeral 6 denotes a transmission processing unit for automatically transmitting the data processing result of the individual control panel 5 to the district management panel 8 which is a predetermined report destination via the general telephone line 7. 9 is a central control panel,
The above-mentioned district management boards 8 are hierarchized, and
.. Are managed comprehensively.

FIG. 2 is a block diagram showing the configuration of the individual control panel 5, in which the measured temperature input from the optical fiber type temperature measuring means 3 is determined at predetermined time intervals set in the clock function unit 10. A measuring unit 11 for measuring temperature data over a number of times, a storage unit 12 for storing the measured data group as day data in a predetermined format in chronological order along with month, day, and day of the week; , Statistical processing of weekly data and day of the week data, and patterning, calculating the average value of the data group and their standard deviation value, and setting the normal value set by the calculated average value pattern and standard deviation value A standard pattern consisting of a range of patterns and its data are automatically created and RAM
13, an arithmetic unit 14 for automatically updating the standard pattern stored in the RAM 13 at a predetermined time interval set in the clock function unit 10, and an automatic update of the standard pattern by the arithmetic unit 14. An analysis unit 15 for comparing and analyzing the new data with the standard pattern data read from the RAM 13 to check for an abnormality, and transmitting the test result from the transmission processing unit 6 to the district management panel 8 through the general telephone line 7. And a control unit 17 for controlling the activation of the automatic transmission device 16 in the transmission processing unit 6.

The transmission processing unit 6 includes an automatic transmission device 16 controlled to be activated by the control unit 17 of the individual control panel 5.
And a report destination storage unit 18 that stores the telephone number of the district management board 8 that is the report destination.

The optical fiber type temperature measuring means 3
The optical fiber 4 laid in the plurality of equipment room units 1 and the pulsed light, for example, a laser pulsed light, are input to the input end of the optical fiber 4 so that the pulsed light is The backscattered light generated in the optical fiber 4 as it travels through the fiber 4 is received and the optical time domain reflection measurement method, that is, OTDR (Optical Time Domain Re
It has a main body 19 that measures temperature from the ratio of Stokes light and anti-Stokes light detected by the flectometry method and converts the temperature into temperature information, and is composed of a microcomputer. As shown in FIG.

In FIG. 3, reference numeral 20 denotes a pulse driver, which is a light-emitting device such as a laser which emits pulse light having an output equal to or higher than the Raman threshold value in accordance with a sampling trigger signal having a constant width ΔTo. The light enters from the input end of the optical fiber 4 through a light control unit 21 including an optical demultiplexer. 22 receives Stokes light and anti-Stokes light, which are separated by an optical filter in an optical demultiplexer in the optical control unit 21 from backscattered light generated when the pulsed light travels in the optical fiber 4. And a light receiving unit that performs photoelectric conversion.

Reference numeral 23 denotes a data table in which judgment values corresponding to the heat sensing systems of a plurality of portions of the optical fiber 4 corresponding to the plurality of partitioned equipment rooms 1A, 1B,... 1N in the equipment room unit 1 are set and stored. I have. That is, as shown in FIG. 4, the monitoring zone numbers (1a, 1b,... 1n) and the near-far range (m) of the optical fiber 4 laid in each of the monitoring zone numbers (1a, 1b,. ) And each of the monitoring area numbers (1a, 1b,... 1n).
.. 1N are stored in association with each other. Reference numeral 24 denotes a data processing unit for inputting the light reception data photoelectrically converted by the light receiving unit 22 and the data stored in the data table 23, processing the data, and processing a plurality of partitioned equipment rooms in the equipment room unit 1. 1N are calculated and output.

FIG. 5 is a schematic plan view showing an example of laying the optical fiber 4 in the equipment room unit 1. The optical fiber 4 drawn from the ceiling of the equipment room 1A at one end of the unit 1 is shown in FIG. As shown by the solid line, after making a round around the inside of the equipment room 1A along the vicinity of the ceiling, the equipment room 1A is lowered to the lower part of the floor and crawled to the lower part of the floor as shown by the broken line in FIG. After making a round around the inside, it is drawn into the next equipment room 1B from the lower part of the floor, and crawls on the lower part of the floor to make the equipment room 1B.
After making a round around the inside of B, it is raised to the ceiling side, and as shown by the solid line, a plurality of rounds are made around the inside of the equipment room 1B along the ceiling and moved to the next equipment room 1C. , 1N, 1C, 1C,... 1N.

Next, among the operations of the equipment abnormality alarm system configured as described above, first, the automatic creation and automatic update operation of the standard pattern will be specifically described. The measurement unit 11 measures the measurement temperature input from the optical fiber type temperature measurement unit 3 12 times every 5 minutes set in the clock function unit 10,
The measured integrated value is stored in the storage unit 12 in time series as basic data. By doing so, the number of stored data per day becomes 24 at one-hour intervals, and this data is stored as day data in a time-series manner for 12 rounds along with the month, day, and day of the week. The stored data is statistically processed into day data, week data, day of the week data, and the like by the arithmetic unit 14, and for example, the data of one day is a data table-1 (for 12 rounds) having a pattern example as shown in FIG. (See Table 1) is automatically created, and a standard pattern for setting a normal range UAL (X + 3σ) to LAL (X-3σ) calculated from the average value pattern of the data group measured at one-hour intervals and the data group. For example, a data table-3 (see Table 2) for each day of the week having a standard pattern example as shown in FIG.
13 is stored.

[0021]

[Table 1]

[0022]

[Table 2]

The standard pattern data stored in the RAM 13 is automatically updated at predetermined time intervals, that is, every 24 hours (on a daily basis) in this embodiment. That is, as shown in the update operation flowchart of FIG.
The data of the day number 1 in the data table 1 shown in FIG. 8 is deleted, and the data of the remaining day numbers 2 to 84 are shifted as the data of the day numbers 1 to 83 (step S5).
0). Then, the updated data of the data table-2 shown in Table 3 is stored in the day number 84 of the data table-1 (step S51), and the arithmetic unit 14 newly sets a normal range UAL (X + 3σ) from all data on the day of the week.
ＬLAL (X−3σ) is calculated (step S52),
Update the data table-2 shown in Table 2 (Step 5)
3).

[0024]

[Table 3]

Further, at the time of the above-described updating operation, the presence or absence of abnormality of the equipment is verified, and the result of the verification is transmitted to the district management panel 8 through the transmission processing unit 6. That is, as shown in the abnormality determination and transmission processing operation flowchart of FIG. 9, the temperature is measured every 30 minutes every day, and the average value of the temperature data for one hour is calculated (step S60).
The calculated new temperature data is stored in a data table-1.
(Step S61). At this time, the new data is compared with the standard pattern data at the same time read from the data table-2 in the RAM 13 by the analysis unit 15 (step S62), and the new data is compared with the normal range UAL (X + 3σ) to LAL of the standard pattern data.
(X-3σ) is determined (step S6).
3). The new data is determined to be in the normal range UAL (X +
If it is within 3σ) to LAL (X−3σ), it is determined that there is no abnormality, and the process returns to step S60 to repeat the above operation, while the new data is in the normal range UAL (X + 3σ) to LAL.
If it is not within (X-3σ), it is determined that there is an abnormality, and the details of the abnormality are further analyzed (step S64). Then, it is determined whether or not the analysis result requires notification to the outside (step S65). If there is a determination result that the notification is required, the automatic transmission device 16 And controls the general telephone line 7 to a predetermined district management panel 8 in accordance with the telephone number stored in the report destination storage unit 18.
The abnormality is automatically transmitted through (step S66).

The data transmitted to the district management panel 8 is hierarchized and transmitted to the central management panel 9, where the transmitted data is comprehensively managed.

In the above-described embodiment, only the alarm system for reporting the facility abnormality to the district management panel 8 and the central management panel 9 has been described. However, the temperature rise using the temperature data for verifying the presence or absence of the abnormality is described. An automatic fire extinguishing system such as automatically injecting a fire extinguishing agent into a plurality of equipment rooms 1A, 1B,... 1N of the equipment room unit 1 based on the processing result by calculating a rate or the like may be used. .

In the above embodiment, the system is applied to a building or the like in which data communication equipment is installed. It can be effectively applied to a wide range of buildings, such as monitoring the presence or absence of abnormality in equipment.

[0029]

As described above, according to the first and fourth aspects of the present invention, a temperature measured from a space where a specific facility is installed or from a specific facility itself is converted into temperature data and converted into a predetermined format. The data is stored in time series, the stored temperature data is statistically processed and patterned, and a standard pattern with a normal range is automatically created. Since it analyzes and checks for abnormalities and transmits it to the designated report destination,
Compared to the conventional one that uses the current and voltage values flowing through the power cable and the communication cable to the equipment to check for abnormalities, it is possible to determine whether the equipment is abnormal at the appropriate time without losing time. It is possible to reliably capture and report, and not only prevent the worst situation of fire occurrence due to temperature rise, but also prevent the unexpected stoppage of equipment. .

In particular, the pattern of the average value of the data group measured over a predetermined number of times at regular time intervals, and the pattern of the standard deviation value calculated from the data group and setting the normal range, as described in claim 2, By creating and updating the standard pattern created from the above, the reliability of the above analysis and test can be further improved.

Further, when the optical fiber type temperature measuring means as described in claim 3 or 5 is used as the temperature measuring means in the equipment abnormality alarm method and system according to the present invention, corrosion resistance, heat resistance, It has excellent thermal responsiveness and temperature information is obtained as changes in light intensity and wavelength, so it is not affected by electrical influences such as electromagnetic induction and the likelihood of false alarms is extremely low, and safety is also high. Because of its high flexibility, it can be easily installed in any place regardless of the installation place. Furthermore, since no driving power supply is required, it is basically maintenance-free or very easy to maintain.
Compared to using other temperature measurement means such as thermocouples,
The alarm performance of a predetermined facility abnormality can be further improved while significantly reducing costs.

Further, the transmission processing unit in the equipment abnormality alarm system is provided with a report destination storage unit for storing the telephone number of the report destination in addition to the automatic transmission device as described in claim 6. If there is, transmission to a predetermined report destination can be performed automatically and urgently. Further, as described in claim 7, the test results in a plurality of specific spaces are transmitted from each transmission processing unit to a predetermined space. In addition to transmitting the information to the district management panel that is the destination of the notification, the central management panel that hierarchically manages the district management panel and manages information comprehensively is provided, so that emergency abnormal conditions can be double-transmitted. As a result, it is possible to more appropriately and effectively implement a post-measures against the equipment abnormality.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an entire facility abnormality warning system for realizing a facility abnormality warning method according to the present invention.

FIG. 2 is a block diagram showing a configuration in an individual board in the same system.

FIG. 3 is a block diagram showing a configuration of an optical fiber type temperature measuring means.

FIG. 4 is an explanatory diagram of table data in the optical fiber type temperature measuring means.

FIG. 5 is a schematic plan view showing an example of laying optical fibers in an equipment room unit.

FIG. 6 is an example of a data pattern for one day.

FIG. 7 is an example of a standard pattern.

FIG. 8 is a flowchart of an operation of updating standard pattern data.

FIG. 9 is a flowchart of an abnormality determination and transmission processing operation.

[Explanation of symbols]

 Reference Signs List 1 equipment room unit 1A, 1B, ... 1N equipment room (example of equipment installation space) 2 data communication equipment (example of equipment) 3 optical fiber type temperature measuring means (example of temperature measuring means) 4 optical fiber 5 individual control panel 6 Transmission processing unit 7 General telephone line 8 District management panel (predetermined report destination) 9 Central control panel 11 Measurement unit 12 Storage unit 14 Operation unit 15 Analysis unit 16 Automatic transmission device 17 Control unit 18 Report destination storage unit

Claims (7)

[Claims] 1. A method for storing temperature data of a space in which a specific facility is installed or of a specific facility itself in a predetermined format in a time-series manner, statistically processing the stored data and patterning the stored data. Is automatically created at predetermined time intervals, and at the time of this update, the presence or absence of abnormality is analyzed by analyzing changes in the time-series pattern, and the test results are compared with the specified results. A facility abnormality warning method characterized by transmitting the information to a report destination. 2. The standard pattern is created from a pattern of an average value of a data group measured over a predetermined number of times at predetermined time intervals and a pattern of a standard deviation value calculated from the data group and setting a normal range. 2. The equipment abnormality alarm method according to claim 1, wherein 3. An optical fiber laid in the space or at a peripheral portion of the specific equipment itself as a means for measuring temperature data of the space where the specific equipment is installed or the specific equipment itself. By inputting pulsed light from the input end of the fiber, the backscattered light generated in the optical fiber is received, and the backscattered light is detected by an optical time domain reflection measurement method, and the Stokes light and the anti-Stokes light are compared. 3. The equipment abnormality alarm method according to claim 1, wherein an optical fiber type temperature measuring means comprising means for measuring a temperature from a ratio and converting the temperature into temperature information is used. 4. A temperature measuring means for measuring a temperature of a space in which a specific facility is installed or a temperature of the specific facility itself, and a temperature measured by the temperature measuring means is measured as temperature data over a predetermined number of times at predetermined time intervals. Measurement unit, a storage unit for storing the measurement data in time series, a statistical processing of the storage data to form a pattern, a standard pattern having a normal range set automatically, and the standard pattern A calculation unit that automatically updates at predetermined time intervals; an analysis unit that analyzes changes in the time-series pattern at the time of automatic update of the standard pattern to test for the presence or absence of abnormality; A facility abnormality alarm system, comprising: a control unit that controls a transmission processing unit that performs transmission. 5. An optical fiber laid in a space where a specific facility is installed or in a peripheral portion of the specific facility itself, and pulsed light is input from an input end of the optical fiber as the temperature measuring means. By doing so, the backscattered light generated in the optical fiber is received, the backscattered light is detected by an optical time domain reflection measurement method, the temperature is measured from the ratio of Stokes light to anti-Stokes light, and converted into temperature information. 5. The equipment abnormality alarm system according to claim 4, wherein an optical fiber type temperature measuring means is provided. 6. The transmission processing unit includes an automatic transmission device and a report destination storage unit that stores a telephone number of a report destination, and the automatic transmission device is configured to be controlled to be activated by the control unit. The equipment abnormality warning system according to claim 4 or 5, wherein 7. A plurality of test results in the specific space are transmitted from each transmission processing unit to a district management board as a predetermined report destination, and the district management boards are hierarchized to centrally manage information. The equipment abnormality alarm system according to any one of claims 4 to 6, further comprising a control panel.