JP3007551B2 - Disaster prevention monitoring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention monitoring device that collects smoke density data and temperature data from an analog sensor to judge a fire, and more particularly to a disaster prevention monitoring device having a multi-MPU receiver.

[0002]

2. Description of the Related Art In recent years, a so-called analog disaster prevention monitoring device which detects information such as smoke density and temperature associated with a fire as analog data by a sensor and sends the data to a receiver to determine a fire has been put into practical use. The receiver of this type of device has a function of collecting analog data from analog sensors by polling, a function of judging a fire based on the collected analog data, a function of processing an operation unit and a display unit provided on a panel of the receiver, and the like. Many functions are required.

For this reason, the processing of the receiver is performed by one MPU.
(Processing with a microprocessor) causes a heavy burden and damages the system in the event of an abnormality. Therefore, the receiver is composed of a main MPU and one or more sub-MPUs. It is known that the functions are distributed by assigning a management function to each sub-MPU and assigning an analog data collection function by transmission control to each sub-MPU.

In such a multi-MPU receiver in which functions are distributed, in order to judge a fire based on collected analog data, for example, one detector is provided for each sensor from the present.
Analog data up to 0 minutes ago must be retained. Further, in order to capture changes in analog data over time, the maximum value and the minimum value of one day of analog data are detected, and these are used as day data, for example, 30 days (one month) of analog history data. Must be kept as. Such past analog data and analog history data are usually stored in a memory in the main MPU with a storage area secured and updated in real time.

[0005]

However, when the receiver is configured as a multi-MPU and the main MPU stores the collected data and the analog history data as described above, each time the sub-MPU collects the analog data by polling, Therefore, the data must be transferred from the sub MPU to the main MPU and the data must be written in the memory in the main MPU. Therefore, the load of the main MPU is still very large even though the receiver is configured by the multi-MPU. There is a problem that it is heavy.

Further, for example, a sub-MPU accommodates eight lines, and one line accommodates a maximum of 127 terminals. When there are n sub-MPUs, a main MPU is provided for every 8 × 127 × n terminals. In order to judge whether a fire has occurred or not, analog data must be stored for each terminal up to 10 minutes before the present, and the memory capacity of the main MPU is limited. There is a problem that it cannot respond sufficiently.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and comprises a multi-MPU receiver and reduces the burden and storage capacity of a main MPU when collecting terminal information by a sub-MPU. It is another object of the present invention to provide a disaster prevention monitoring device that can easily cope with the construction and expansion of a large-scale system.

[0008]

In order to achieve this object, the present invention is configured as follows. First, according to the present invention, a receiver is provided with a main MPU and one or more sub-MPUs, and a plurality of transmission lines are drawn out from each sub-MPU, and each transmission line has an analog signal such as smoke density and temperature accompanying a fire. A disaster prevention monitoring device that connects a sensor for detecting information, collects analog information from the sensor under transmission control of a sub-MPU, and determines a fire.

The present invention relates to such a disaster prevention monitoring device,
In each of the sub-MPUs, an analog data storage unit that updates and stores analog information for a predetermined time before the current time, for example, 10 minutes before, collected from a sensor connected to its own transmission line, and a storage data of the analog data storage unit. A fire judging section for judging a fire based on the information, and when the fire judging section judges a fire, analog information of a sensor judged as a fire is read from the analog data storage section and automatically transmitted to the storage section of the main MPU . And one data transfer unit .

Further, the sub MPU is further provided with an analog history information storage unit for storing one month of day data composed of a minimum value and a maximum value of one day of analog data, and a fire judgment unit similarly judges a fire. At this time, a second data transfer unit is provided for reading the analog history information of the sensor determined as fire by the first data transfer unit from the analog history information storage unit and automatically transferring the analog history information to the storage unit of the main MPU .

The sub-MPU reads and transfers the information stored in each storage unit when receiving a data transfer request from the main MPU, in addition to the automatic transfer at the time of fire judgment.

[0012]

According to the disaster prevention monitoring device of the present invention, the sub-MPU collects the analog information of the terminal and stores it for a certain period of time, and the main MPU only receives the information when the sub-MPU determines that a fire has occurred. The analog information stored and held for the sensor that has been determined to be a fire is automatically transferred to the main MPU.
Need not be transferred to the
The load on the main MPU when configured with PUs can be greatly reduced.

The storage unit of the main MPU stores a sub MP
The storage capacity may be at least enough to store analog information for a certain period of time transferred when a fire is judged by U, and the storage capacity can be reduced, and at the same time, the storage capacity of the main MPU is increased even if the number of sub-MPUs increases due to expansion or the like. There is no need, and a large-scale system can be easily constructed.

[0014]

FIG. 1 is a block diagram showing an embodiment of a disaster prevention monitoring device according to the present invention. In FIG. 1, a receiver 1 includes a main MPU 11 that manages the entire receiver, and, for example, two sub-MPUs 10 that collect terminal information and control terminals.
-1 and 10-2 are provided. Sub MPU 10-1, 1
A maximum of eight transmission lines 8 are drawn from each of the lines 0-2, and for example, 127 terminals can be connected per line. In this embodiment, two sub-MPUs 10-1 and 10-
2, the maximum number of terminals is (8 lines) × (12
7 terminals) × (2 sub-MPUs) = 2032. Address numbers 1 to 127 are set for the terminals of the transmission line 8 in line units, and a specific terminal can be called using this address number.

The transmission line 8 drawn from the sub-MPUs 10-1 and 10-2 has, as a terminal, for example, an analog heat sensor 2 and an analog smoke sensor as shown as the first transmission line 8 of the sub-MPU 10-1. The sensor 3, the sensor repeater 4, and the control repeater 5 are connected. Further, a plurality of sensor lines are drawn out from the sensor repeater 4 and connected to the on / off sensor 6. Furthermore, the control repeater 5
The smoke control device 7 is connected to the control line drawn out of the system.

The sub-MPUs 10-1 and 10-2 are provided with functions of a transmission control unit 12, a fire determination unit 13, and a data transfer unit 14 under program control. Sub MPU1
An analog 10-minute data storage unit 15 and a one-month history storage unit 16 are provided as storage units for 0-1 and 10-2.
The analog 10-minute data storage unit 15 updates and stores analog data collected in the past 10 minutes for each analog sensor such as the analog heat sensor 2 and the analog smoke sensor 3 connected to the transmission line 8. ing. The one-month history storage unit 16 stores at least the maximum value and the minimum value in one day of collected data for each analog sensor for one month.

The fire judging unit 13 judges a fire from the 10-minute data stored in the analog 10-minute data storage unit 15 and notifies the main MPU 11 of the occurrence of a fire by an interrupt command. When a fire is judged by the fire judging unit 13, the data transfer unit 14 reads out the analog 10-minute data of the analog sensor in which the fire is judged from the analog 10-minute data storage unit 15 and automatically transfers and stores the data to the main MPU 11. Let it. At the same time, the data transfer unit 14 reads the corresponding history data from the one-month history storage unit 16 and
11 and automatically stored.

The main MPU 11 includes a reception control unit 17, an analog 10-minute data storage unit 18, and a fire history storage unit 1.
9 is provided. The analog 10-minute data storage unit 18 only needs to have a capacity capable of storing information of one analog sensor automatically transferred by the fire judgment of the sub-MPUs 10-1 and 10-2. For example, a storage capacity for three reports is secured.

The fire history information storage unit 19 stores the 10-minute analog data and one-month history data transferred from the sub-MPUs 10-1 and 10-2 based on the fire judgment. For 20 reports, if the number exceeds 20 reports, the oldest history information is deleted and the latest history information is stored. Furthermore, the main MPU1
1, the operation unit 20, the display unit 21, and the power supply unit 22
Is provided.

Main MPU 11 and sub MPU 10
1.10-2, as shown in FIG.
3, ROM 24, RAM 25, interrupt port 26, I /
It has an O port 27, a serial communication port 28, and a bus 29. The RAM 25 of the main MPU 11 forms the analog 10-minute data storage unit 18 and the fire history storage unit 19 of FIG. 1, and the RAM 25 of the sub-MPUs 10-1 and 10-2 includes the analog 10-minute data storage unit 15 and the one-month history storage unit. Sixteen.

The main MPU 11 and the sub MPU 10
-1 and 10-2 are interrupt port 26, I / O port 27
Command and data are transmitted through
Data transmission between the PUs 10-1 and 10-2 and the terminal is performed via the serial communication port 28. FIG. 3 shows the sub M
4 shows details of an analog 10-minute data storage unit 15 and a one-month history storage unit 16 of the PUs 10-1 and 10-2. Analog 1
The 0 minute data storage unit 15 is an area 1 for storing the latest collected data for the past 10 minutes from the present for each analog sensor.
5a, maximum value MAX and minimum value MI of collected data for one day
It has work areas 15b and 15c for creating N. If the polling cycle is once every 7.5 seconds, for example, 80 smoke density data and temperature data are always stored in the area 15a for each analog sensor.

The data stored in the work areas 15b and 15c of the analog 10-minute data storage unit 15 are compared with each other every time analog data is collected. If the current data is larger than the stored data, the MAX area 15b is updated. If the current data is smaller than the stored data, the MIN to area 15c is updated. At midnight after 24 hours, the data in the work areas 15b and 15c are stored as the maximum value MAX and the minimum value MIN of the day as the maximum value MAX and the minimum value MIN of the corresponding day in the one-month history storage unit 16. Is done. Therefore, the sub MPUs 10-1, 10-
2 RAM 25 at maximum (8 lines) x (127 terminals)
Requires a storage area for

FIG. 4 shows the details of the fire history storage unit 19 of the main MPU 11. FIG. 4A shows a storage area for data transferred in accordance with a fire judgment, which is composed of a 10-minute data history area 19a and a one-month history area 19b. 1
In the 0-minute data history area 19a, collected data for the past 10 minutes from the time of the alarm is stored, for example, for 20 alarms, for the sensor that issued the alarm and, if necessary, the sensors in the vicinity thereof. In the one-month history area 19b, one month's history data of the maximum value MAX and the minimum value MIN of each day for one month is stored for the sensor that issued the alarm and, if necessary, the sensors in the vicinity thereof for the same 20 minutes. I do.

FIG. 4B shows an alarm history area 19c, which has an area for 12 months for each analog sensor.
The area for months is composed of an area for 31 days and an area for the total number of alarms for that month. In addition, the area for one day includes a 24-hour alarm counter area, a total counter area thereof, and a maximum value MAX and a minimum value MIN.

The transfer of the data stored in the alarm history area 19c is not an automatic transfer based on the fire judgment of the sub-MPUs 10-1 and 10-2.
Sometimes, and the number of monthly alerts is made in response to a transfer request from the main MPU 11 to the sub-MPUs 10-1 and 10-2 when one month has elapsed. As described above, in the RAM 25 of the main MPU 11, the alert history area 19c in FIG. 4B has a maximum of (8 lines) × (127 terminals) ×
(2 sub-MPUs) are required, but the storage area for the analog 10-minute data and one-month history data in FIG. 4A can be as small as, for example, 20 reports.

FIG. 5 is a flowchart showing the operation of the receiver 1 shown in FIG.
This is a processing operation of the sub-MPUs 10-1 and 10-2 provided in FIG. First, the polling process of the transmission control unit 12 collects analog data of smoke density data and temperature data from the analog sensor in step S1, and compares the values of the analog data with the threshold value for fire determination in step S2, respectively. Or not.

If it is not a fire, proceed to step S3,
The oldest data in the analog 10-minute data storage unit 15 in FIG. 3 is deleted, and the current collected data is stored. In step S4, it is updated by comparing the maximum value MAX and the minimum value MIN. Further, when it is midnight in step S5, the maximum value MAX and the minimum value MIN of that day are stored in the one-month history storage unit 16.

On the other hand, if it is determined in step S2 that a fire has occurred, the process proceeds to step S8, in which a fire determination interrupt command is notified to the main MPU 11 and, at the same time, the detector that has determined that a fire has occurred, and if necessary, the detection of a nearby area. Container 10
The minute data is read from the analog 10-minute data storage unit 15 and transferred and stored in the analog 10-minute data storage unit 18 of the main MPU. At the same time, the corresponding one-month history information in the one-month history storage unit 16 is read and transferred to the fire history storage unit 19 of the main MPU 11.

Further, in step S7, the main MPU 1
If a data transfer request has been received from No. 1, the requested data is transferred in step S8 in the same manner as when the fire was determined. In step S2, only a fire is judged. In addition to this, a comparison is made with a threshold value of a caution display level (pre-alarm level). You may make it transfer.

FIG. 6 is a flowchart showing the operation of the main MP shown in FIG.
This is the processing operation of U11. Sub MP based on fire judgment
When the reception of the transfer data from U10-1 or 10-2 is determined in step S1, the 10-minute data received in step S2 is stored in the analog 10-minute data storage unit 18, and the maximum value MAX and minimum value for one month are stored. The value MIN is stored in the fire history storage unit 19.

Subsequently, in step S13, the fire occurrence time, day and month alarm counters are incremented. At this time, the reception control unit 17 sets the sub-MPU 10-1 or 10-
Based on the fire information received by the interrupt command 2, fire display, ringing of a bell, control of terminal equipment, and the like are performed. Next, the processing of the main MPU 11 based on the 10-minute data automatically transferred from the sub-MPU 12 to the main MPU 11 in accordance with the fire judgment and the maximum value MAX and the minimum value MIN for one month is shown in FIG.
This will be described with reference to the flowchart of FIG. Here, a case where the display unit 21 of the receiver 1 in FIG. 1 is configured by a touch panel is taken as an example.

First, an initial menu screen is displayed on the touch panel serving as the display section 21 of the receiver 1 by operating the ten keys on the operation section 20, and when a fire judgment is notified, in step S1, the initial menu screen is automatically changed from the initial menu screen. Switch to the fire history menu screen. Next, when the operator inputs the line address number of the sensor determined to be a fire on the menu screen, the area of the analog 10-minute data storage unit 18 and the fire history storage unit 19 corresponding to the line address number is selected in step S2. At step S3, a fire history graph screen 200 as shown in FIG. 8 is displayed. All of the processes in steps S1 to S3 may be automatically performed without requiring the operation of the operator.

A fire history graph screen 200 shown in FIG. 8 includes a history graph 201 of collected data of the selected line number for 10 minutes before the alert, and a maximum value of the past one month (30 days) from the present. History graph 202 of MAX and minimum value MIN,
10 times after the fire history graph display 200 appears.
Three small screens of the analog monitor graph 203 of the collected data for a minute are displayed in a multi-window.

Here, the data for the analog monitor graph 203 is transmitted from the sub MPUs 10-1 and 10-2 to the main MPU 1 when the fire history graph screen 200 is selected.
1 is taken in one by one. Also, as soft keys for switching the display and the like, a “histogram display” key 204 for selecting a mode other than the display mode, a “near data display” key 205, a “data print” key 206, and a “screen print” key 207 and an “end” key 208 are displayed,
Each mode corresponding to the keys 204 to 208 can be selected.

If it is determined in step S4 that the "histogram display" key 204 has been pressed during the display of the fire history graph screen 200, a histogram screen 210 as shown in FIG. 9 is displayed in step S5. . The histogram screen 210 shown in FIG. 9 includes a histogram 211 for the number of alarms by month stored in the fire history storage unit 19 shown in FIG. Two small screens are displayed in a multi-window, and “fire history display” key 209, “proximity data display” key 205, “data print” key 206, “screen print” key 207, and “software key” The "end" key 208 is displayed.

If it is determined in step S4 that the "display neighbor data" key 205 has been pressed, a nearby data screen 220 as shown in FIG. 10 is displayed in step S5. Graph 201 of collected data for 10 minutes before the alarm of the selected sensor, the maximum value MAX and the minimum value MIN for the past month from the present
, A graph 202 of collected data for 10 minutes before the alarm of the nearby sensor is issued, and a graph 222 of the maximum value MAX and the minimum value MIN for the past month from the present are displayed in a multi-window. Keys 204, 206 to 209 to be displayed and to select a mode other than the one being displayed
Is also displayed in step S5.

Further, during the display of each of the screens 200, 210 and 220, the user selects the "data print" key 206 in step S6.
If it is determined in step S7, the screens 200, 2
When the “screen print” key 207 is selected, one of the currently displayed screens 200, 210, and 220 is printed on both sides.
If it is determined in step S8 that the "end" key 208 has been pressed, the series of processes ends.

That is, when the main MPU 11 saves data necessary for displaying the screens 200 and 220 as shown in FIGS. 8 and 10 in the analog 10-minute data storage unit 15 and the fire history storage unit 16, the present invention is applied. In this case, the sub MPU 12 is automatically transferred from the sub MPU 12 to the main MPU 11 when a fire is determined, without performing polling.
1 can be greatly reduced.

The expansion of the system is dealt with by increasing the required number of sub-MPUs provided in the receiver 1 of FIG. Even if the sub MPU is added in this way,
The capacity of the analog 10-minute data storage unit 18 of the main MPU 11 does not need to be increased. The fire history storage unit 19
However, the storage area for the 10-minute data and the one-month history data in FIG. 4A may be kept for 20 reports, and it is not necessary to expand the storage area with the addition of the sub-MPU. Therefore, it is possible to easily cope with the expansion of the system.

In the above embodiment, two sub-MPUs are taken as an example, but an appropriate number can be used as needed. When a fire is judged, the sub MPU changes to the main MPU.
The data to be automatically transferred to the analog
Any required data other than the month history data may be automatically transferred. Further, the present invention is not limited by the numerical values shown in the embodiments.

[0041]

As described above, according to the present invention, the sub-MPU collects the analog information of the terminal and stores it for a certain period of time, and the main MPU determines that the sub-MPU has determined that a fire has occurred. In this case, analog information stored and held for a sensor determined to be a fire is automatically transferred to the main MPU, so that it is not necessary to transfer data from the sub MPU to the main MPU every time data is collected. The load on the main MPU in the case of the configuration using the MPU can be greatly reduced.

The storage unit of the main MPU stores the sub MP
It is sufficient to store at least a certain amount of analog information transferred when a fire is judged by U. The storage capacity can be reduced, and the storage capacity of the main MPU needs to be increased even if the number of sub-MPUs increases due to expansion or the like. Without
A large-scale system can be easily constructed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a disaster prevention monitoring device according to the present invention.

FIG. 2 is a block diagram showing a configuration of each of a main MPU and a sub MPU of FIG. 1;

FIG. 3 is an explanatory diagram showing a data configuration of an analog 10-minute data storage unit and a one-month history storage unit of the sub-MPU of FIG. 1;

FIG. 4 is an explanatory diagram showing a data configuration of an analog 10-minute data storage unit and a fire history storage unit of the main MPU of FIG. 1;

FIG. 5 is a flowchart of a data collection process and a data transfer process of the sub-MPU in FIG. 1;

FIG. 6 is a flowchart showing a transfer data receiving process of the main MPU of FIG. 1;

FIG. 7 is a flowchart of transfer data display processing of a main MPU in FIG. 1;

FIG. 8 is an explanatory diagram showing a fire history graph screen displayed when a fire is determined.

FIG. 9 is an explanatory diagram showing a histogram screen.

FIG. 10 is an explanatory diagram showing a neighborhood data screen displayed when a fire is determined.

[Explanation of symbols]

 1: Receiver 2: Analog heat detector 3: Analog smoke detector 4: Repeater for sensor 5: Repeater for control 6: ON / OFF detector 7: Smoke prevention equipment 8: Transmission line 9: Line 10- 1, 10-2: Sub MPU 11: Main MPU 12: Transmission control unit 13: Fire determination unit 14: Data transfer unit 15: Analog 10 minute data storage unit 16: Monthly history storage unit 17: Reception control unit 18: Analog 10-minute data storage unit 19: fire history storage unit 20: operation unit 21: display unit 22: power supply unit 23: CPU 24: ROM 25: RAM 26: interrupt port 27: I / O port 28: serial communication port 29: bus 200: fire history graph screen 201: history graph 10 minutes before the alert 202: maximum / minimum value history graph 203: analog monitor graph 204: histogram display key 2 05: Neighbor data display key 206: Data print key 207: Screen print key 208: End key 209: Fire history display key 210: Histogram screen 211: Monthly alarm count histogram 212: Hourly alarm count histogram 220: Neighbor data screen 221, 222: neighborhood data graph

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomonao Moroda 2-10-3, Kami-Osaki, Shinagawa-ku, Tokyo Inside Houchiki Co., Ltd. (56) References JP-A-6-4783 (JP, A) JP-A JP-A-5-298572 (JP, A) JP-A-4-294494 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G08B 17/00 G08B 25/00 G08B 26/00

Claims (2)

(57) [Claims] A main MPU and one or a plurality of sub-MPUs are provided in a receiver, and a plurality of transmission lines are drawn out from each sub-MPU, and analog information such as smoke density and temperature associated with a fire is transmitted to each transmission line. Connect a detector to detect
In a disaster prevention monitoring device that collects analog information from the sensors under transmission control of U to judge a fire, each of the sub-MPUs has a predetermined time from the present time collected from a sensor connected to its own transmission line. An analog data storage unit that updates and stores the previous analog information; a fire determination unit that determines a fire based on data stored in the analog data storage unit; and a fire is determined when the fire determination unit determines a fire. A first method of reading analog information of the detected sensor from the analog data storage unit and automatically transmitting the analog information to the storage unit of the main MPU .
Data transfer part, day consisting of the minimum and maximum values of analog data for one day
An analog history information storage unit for storing data for one month ; and the first data when the fire determination unit determines a fire.
The analog footwear of the detector determined to be a fire by the transfer unit
History information from the analog history information storage unit
Second data transfer unit that automatically transfers data to the storage unit of the main MPU
And a disaster prevention monitoring device. 2. A disaster prevention monitoring system according to claim 1 Symbol placement, the sub MPU, when receiving the data transfer request from the main MPU, the transfer of information stored in the storage unit is read Disaster prevention monitoring device.