JPH05135285A - Fire alaming facility - Google Patents

Abstract

PURPOSE:To attain control even in rewriting by making two memory to store interlocking data and permitting interlocking data stored in a second memory to control a device to be controlled when a first memory is rewriting. CONSTITUTION:Interlocking data which is necessary in minimum is stored in first/second ROM 11 and 12 in common. In the case, if a fire signal is received through monitor signal receiving circuits 41 to 4n, a fire is alarmed. After the fire is alarmed, whether first ROM 11 is rewriting or not is judged. When first ROM 11 is writing, only the interlocking data of the second ROM 2 is stored in a RAM 22, and control exhaust gas proof device corresponding to the stored data in the RAM 22, interlocking data stored in second ROM 12 is used so that the device to be controlled can be controlled even while ROM storing interlocking data is rewriting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire alarm system for controlling, when a fire detector detects a fire, a controlled device which is linked to a line to which the fire detector detecting the fire is connected. It is about.

[0002]

2. Description of the Related Art In a conventional fire alarm system, a link between a line to which a fire detector is connected and a controlled device such as a smoke control device is preset and when a fire detector detects a fire. In addition, there is known a facility for controlling a controlled device which is linked to a line to which the fire detector is connected.

For example, as shown in FIG. 5 (1), fire detectors are connected to lines L1, L2, and L3, respectively, and when a fire detector connected to line L1 detects a fire, the controlled device is controlled. When MD1 and MD2 are activated and the fire detector connected to the line L2 detects a fire, the controlled devices MD2 and MD3 are activated and the fire detector connected to the line L3 detects a fire. Sometimes the controlled device MD
It is assumed that only 3 is set to start. In this case, the lines L1, L2, L3 and the controlled devices MD1, MD
2, ROM is known as a means for storing the interlocking data indicating the interlocking relationship with MD3, and FIG. 5B shows the stored contents of the ROM in the case of FIG. 5A.

When the interlocking data is stored by the ROM as described above, there is an advantage that it takes less space than when the interlocking data is stored by the DIP switch.

[0005]

However, when the interlocking data is stored in the ROM, it is necessary to rewrite the interlocking data in the ROM in response to a layout change at the site. There are several methods for rewriting the interlocked data in the ROM, but in any of the cases, the controlled device cannot be controlled during the rewriting of the ROM, and if a fire occurs during the rewriting of the ROM, the There is a problem that the control device cannot be controlled.

[0006] It is an object of the present invention to provide a fire alarm facility in which interlocking data is stored in a ROM and the controlled device can be controlled even while the ROM is being rewritten.

[0007]

SUMMARY OF THE INVENTION According to the present invention, interlocking data indicating the interlocking relationship between a line to which a fire detector is connected or a fire detector and a controlled device such as a smoke control device is provided as first RO.
M, the second ROM is stored in two ROMs, the first R
When the OM data is not rewritten, the first RO
When the controlled device is controlled according to the logical sum data of the interlocking data of M and the interlocking data of the second ROM to rewrite the data of the first ROM, the interlocking data stored in the second ROM The controlled device is controlled according to the above.

[0008]

According to the present invention, the interlocking data is stored in the two ROMs of the first ROM and the second ROM, and when the interlocking data of the first ROM is not rewritten, the interlocking data is output according to the output data of the logical sum means. Controls the controlled device while the first R
When rewriting the OM interlocking data, the second R
Since the controlled device is controlled only according to the interlocking data stored in the OM, the ROM in which the interlocking data is stored
Even during rewriting, the controlled device can be controlled.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.

In this embodiment, the fire receiver RE is
The control circuit C and the sensor signal receiving circuits 41, 42, ...
4n and smoke control equipment control circuits 61, 62, ..., 6n
A fire light display circuit 81, a district display circuit 82, an auxiliary light display circuit 83, a switch light display circuit 84, a switch input circuit 85, an acoustic ringing circuit 86, and a fire notification signal control circuit 87, 88. And external device connection interface 8
9, a power supply circuit PS, and a standby power supply PS1.

Fire detectors DE1, DE2, ... And a terminating resistor ER are connected to the detector signal receiving circuit 41, and the detector signal receiving circuits 42 ,. Similar things are connected.

A smoke-exhaust device control circuit 61 is connected to a smoke-exhaust device damper MD1, and smoke-exhaust device control circuits 62 ,.
Smoke-proof exhaust dampers MD2, ..., MDn are connected to n, respectively. In addition, in the smoke control device 61,
A controlled device other than the smoke proof smoke damper MD1 may be connected, and two or more controlled devices may be connected.
6 shows a state in which only the smoke-proof and smoke-proof damper MD1 is connected to the smoke-proof and smoke-proof device control circuit 61 on behalf of them, and the smoke-proof and smoke-proof device control circuits 62, ... It is similar to the device control circuit 61.

The control circuit C includes a microprocessor MPU for controlling the entire control circuit C and ROMs 10, 11, and 1.
2, RAMs 21, 22 and interfaces 31, 3
2, ... 3n, 51, 52, ... 5n, 71, ...
, 79, a data bus DB, and an address bus AB.

The ROM 10 is a microprocessor MPU.
The operation program of FIG. 2 is stored, and the program shown in the flowchart of FIG.

The first ROM 11 includes a fire detector DE1,
ROM for storing interlocking data showing interlocking relations between the lines L1, L2, ..., Ln to which DE2, ... Are connected and the controlled equipment such as the smoke control device, an example of which is shown in FIG. ..

The second ROM 12 has a fire detector DE1,
A ROM for storing the minimum required interlocking data corresponding to the lines L1, L2, ..., Ln to which the DE2, ... Are connected, an example of which is shown in FIG. The minimum required interlocking data is interlocking data in which, for example, the line and the smoke proof device are associated with each other in the same area (one-to-one).

That is, the second ROM 12 is a ROM that stores at least the minimum required interlocking data, and the first ROM 11 is a ROM that stores the interlocking data that should be set according to the site and is rewritable. Na ROM
(For example, an electrically rewritable EEPROM). Therefore, the first ROM 11 and the second ROM 12
The minimum required interlocking data is commonly stored in.

The RAM 21 is a microprocessor MPU.
RAM 22 is a work area of the first ROM 11
Is a memory for storing data obtained by logically adding the interlocking data stored in the second ROM 12 to the interlocking data stored in the second ROM 12, and is also a memory for storing data other than the interlocking data.

Interfaces 31, 32, ..., 3n
Correspond to the sensor signal receiving circuits 41, 42, ..., 4n, respectively, and have interfaces 51, 52 ,.
Correspond to the smoke control equipment control circuits 61, 62, ..., 6n, and the interfaces 71 to 79 correspond to the fire lamp display circuit 81.
~ Corresponds to the external device connection interface 89.

The microprocessor MPU and ROM
10 is an example of a logical sum means for calculating a logical sum of the interlocking data stored in the first memory and the interlocking data stored in the second memory. When the rewriting is not rewritten, the controlled device is controlled according to the output data of the logical sum means, while when the interlocking data of the first memory is rewritten, only the interlocking data stored in the second memory is responded to. It is also an example of control means for controlling the controlled device.

Next, the operation of the above embodiment will be described.

2 and 3 are flow charts showing the operation of the above embodiment.

First, initialization is performed (S1), the sensor signals detected by the fire detectors DE1, DE2, ... Are read from the interfaces 31 to 3n, and the read sensor signals are stored in the RAM 22 (S2). ). Then, the switch operation signal is read from the interface 75, and the RAM2
2 and the corresponding switch lamp and auxiliary lamp are turned on or off based on the stored switch operation signal (S3). At this time, if there is a fire signal in the sensor signals stored in the RAM 22 (S4), the accumulation timer is reset and restarted, and the main sound is emitted and the first sound is emitted.
The information is displayed (S5). The accumulation timer is not an independent timer but the microprocessor MPU performs the function of the accumulation timer.

Then, the switch operation signal is read from the interface 75, and the read switch operation signal is RA.
It stores in M22 and turns on or off the corresponding switch lamp and each auxiliary lamp (S6). At this time, if the time counted by the accumulation timer has not passed 8 seconds, the above S
When the operation of 6 is repeated and the 8 seconds have passed (S
7), the fire detectors D1, D2, ... Are restored for 1 second via the interfaces 31 to 3n and the detector signal receiving circuits 41 to 4n, and the accumulation timer is reset and restarted (S8). Subsequently, the sensor signal is read in the same manner as above, the read sensor signal is stored in the RAM 22, and each switch lamp and each auxiliary lamp is turned on or off based on the switch operation signal read from the interface 75 (S
9, S10). In this way, if a fire signal is received via the receiving circuits 41 to 4n before the time counted by the accumulation timer has elapsed for 50 seconds (S11, S12), the fire is warned (S13). At this time, if 50 seconds elapse without receiving the fire signal, the process returns to S2, and the operations of S2 to S11 are repeated. The operation of is repeated.

After warning the fire in S13, the first R
It is determined whether the OM11 is being rewritten (S21). At this time, if the first ROM 11 is being rewritten, the second RO
Only the linked data of M12 is stored in the RAM 22 (S2
2) The smoke proof / exhaust devices MD1 to MDn are controlled according to the interlocking data stored in the RAM 22 (S23).
Thus, since the interlocking data of the second ROM 12 is used when the first ROM 11 is being rewritten, the controlled device can be controlled even while the ROM in which the interlocking data is stored is being rewritten.

On the other hand, if the first ROM 11 is not being rewritten, the microprocessor MPU calculates the logical sum of the interlocking data stored in the first ROM 11 and the interlocking data stored in the second ROM 12. Then, this logical sum value is stored in the RAM 22 (S21a). That is, the first
The interlocking data of the ROM 11 and the interlocking data of the second ROM 12 are read by the microprocessor MPU, taken into the RAM 21, and the OR of the two interlocking data is calculated by the microprocessor MPU, and the calculation result is stored in the RAM 22. Store. Then, according to the logical sum value of the interlocked data stored in the RAM 22, the smoke proof / exhaust device MD
1 to MDn are controlled (S23). As described above, since the smoke proof / exhaust device is controlled according to the logical sum of the two interlocking data, the same interlocking data is stored in the first ROM 11 and the second ROM 12, and one of the interlocking data is noise. The controlled device operates at least in accordance with the interlocking data initially stored in the other interlocking data even if the interlocking data changes due to such reasons. That is, when the interlocked data of the first ROM 11 changes due to noise, the controlled device operates at least according to the interlocked data of the second ROM 12,
When the interlocking data of the second ROM 12 changes due to noise, the controlled device operates at least according to the interlocking data of the first ROM 11. When a part of the interlocked data changes due to noise, controlled devices that do not need to be controlled may be controlled, but as long as controlled devices that need to be controlled are controlled, in practice It doesn't matter.

After that, the detector signals read from the interfaces 31 to 3n are stored in the RAM 22, and the switch lamp and the auxiliary lamp are turned on or off according to the switch operation signal (S31, S32), at which time the fire detector is detected. DE
If the fire signal is received from 1, DE2 ... (S33),
The subsequent fire signal is displayed by the district light display circuit 82 (S34), and if the first ROM 11 is being rewritten, the smoke proof / emission control device is controlled according to the interlocking data of the second ROM 12 (S35, S36, S37). ), If the first ROM 11 is not being rewritten, the interlocked data of the first ROM 11 and the second R
The smoke control device is controlled according to the logical sum value with the interlocking data of the OM 12 (S35, S35a, S37). If the fire recovery switch is off, the process returns to S31 and S31.
If the fire recovery switch is turned on (S38), the fire recovery operation is repeated (S3).
9) Return to S2. It should be noted that the fire recovery switch is provided in the switch input circuit 85, and the fact that the fire recovery switch has been turned on is notified via the interface 75 to the RAM 2
Store in 2.

FIG. 4 is a circuit diagram showing a main part of another embodiment of the present invention.

In FIG. 4, an example of 4 bits is shown as the first ROM 11 and the second ROM 12, and the output terminal D0
-D3 output the interlocked data respectively through the OR circuits OR1 to OR4.
Have been sent to. When the first ROM 11 is rewritten,
It is connected to the ROM writer R via the connectors C1 and C1. Further, the data output terminals D0 to D of the first ROM 11
3 and OR circuits OR1 to OR4, three-state buffers T1 to T4 are connected, and the enable signals of the three-state buffers T1 to T4 are Low when the connector C1 is not connected to the connector C2. The same signal as the signal is output, and when the connector C1 is connected to the connector C2, the enable signal is H level.
The output impedance becomes high and the output impedance becomes high impedance.

The OR circuits OR1 to OR4 are the first
Is an example of a logical sum means for calculating a logical sum of the interlocking data stored in the memory of the second memory and the interlocking data stored in the second memory, the connectors C1 and C2, the three-state buffers T1 to T4, and the anti-emission device. Smoke equipment control circuits 61-64
Controls the controlled device according to the output data of the logical sum means when the interlocked data of the first memory is not rewritten, while the second memory is rewritten when the interlocked data of the first memory is rewritten. It is an example of a control means for controlling the controlled device according to only the interlocking data stored in.

In the embodiment shown in FIG. 4, the first ROM 1
1 is not rewritten, connector C2 is connector C
Since it is not connected to 1, the enable signal becomes Low, the three-state buffers T1 to T4 output the same signal as the input signal, and the OR data OR1 to OR4 cause the interlocked data of the first ROM 11 and the second The interlocked data in the ROM is logically ORed, and the smoke proof / exhaust devices 61 to 64 are controlled according to the logical OR value. On the other hand, the first ROM 11
Is being rewritten, the connector C2 is
3 state buffer T1 since it is connected to 1
For ~ T4, the enable signal becomes High, its output terminal becomes high impedance, "0" is output by the pull-down resistor, and the smoke proof devices 61-64 are controlled according to only the interlocked data of the second ROM. It

FIG. 6 is an explanatory diagram of the interlocking relationship between the line and the controlled device in the above embodiment, and is a diagram showing an example of the minimum necessary interlocking relationship corresponding to the line.

Further, the first ROM 11 stores interlocking data indicating the interlocking relationship between the line and the controlled device, instead of storing interlocking data indicating the interlocking relationship between the fire detector and the controlled device. May be. That is, the first RO
M11 is an example of a first memory that stores interlocking data indicating a interlocking relationship between a line to which a fire detector is connected or a fire detector and a controlled device such as a smoke proof / exhaust device. Second R
The OM 12 may store interlocking data indicating the interlocking relationship between the fire detector and the controlled device, instead of storing the interlocking data indicating the interlocking relationship between the line and the controlled device. That is, the second ROM 12 is an example of a second memory that stores interlocking data indicating the interlocking relationship between the line to which the fire detector is connected or the fire detector and the controlled device such as the smoke control device. Further, the first memory or the second memory may be a RAM with a backup.

[0034]

According to the present invention, the interlocked data is stored in the ROM, and the controlled device can be controlled even while the ROM is being rewritten.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the above embodiment.

FIG. 3 is a flowchart showing the operation of the above embodiment.

FIG. 4 is a circuit diagram showing a main part in another embodiment of the present invention.

FIG. 5 is an explanatory diagram of the interlocking relationship between the line and the controlled device in the above-described embodiment or the conventional example, and is a diagram illustrating an example of the interlocking relationship to be set according to each site.

FIG. 6 is an explanatory diagram of an interlocking relationship between a line and a controlled device in the above-described embodiment or the conventional example, and is a diagram showing an example of a minimum necessary interlocking relationship corresponding to the line.

[Explanation of symbols]

 RE ... Fire receiver, C ... Control circuit, MPU ... Microprocessor, DE1, DE2 ... Fire detector, L1-Ln ... Line, T1-T4 ... Tristate transistor, C1, C2 ... Connector, OR1-OR4 ... Logical OR Circuit, 11 ... 1st ROM, 12 ... 2nd ROM, 61-6n ... Smoke control equipment control circuit.

Claims (2)

[Claims] 1. A first memory which stores interlocking data indicating a interlocking relationship between a line to which a fire detector is connected or a fire detector and a controlled device such as a smoke control device, and which is writable; A second memory for storing interlocking data indicating an interlocking relationship between the line or the fire detector and the controlled device; the interlocking data stored in the first memory and the second memory A logical sum means for calculating a logical sum with the interlocking data; when the interlocking data of the first memory is not rewritten, the controlled device is controlled according to the output data of the logical sum means, and And a control means for controlling the controlled device according to only the interlocking data stored in the second memory when rewriting the interlocking data in the first memory. Fire alarm equipment. 2. The interlocking data stored in the second memory according to claim 1, wherein the interlocking data stored in the second memory is the minimum interlocking data corresponding to the line or the fire detector, or the minimum interlocking data. Fire alarm equipment characterized by interlocking data including