JP3040838B2 - Fire alarm system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention sets in advance a link to which a fire detector is connected or a link between a fire detector and a controlled device such as a smoke evacuator, and the fire detector detects a fire. At times, the present invention relates to a fire alarm system that controls a controlled device that is linked to a fire detector that detects the fire.

[0002]

2. Description of the Related Art In a conventional fire alarm system, a line to which a fire detector is connected or an interlocking relationship between a fire detector and a controlled device such as a smoke evacuator are set in advance. There is known a facility that, when detected, controls a controlled device that is linked to the fire detector.

[0003] For example, as shown in FIG.
Fire detectors are connected to L2 and L3, respectively, and the line L1
The controlled devices M1 and M2 are activated when the fire detector connected to the line detects a fire, and the controlled devices M2 and M2 are activated when the fire detector connected to the line L2 detects a fire.
3 is activated and when the fire detector connected to the line L3 detects a fire, it is assumed that only the controlled device M3 is activated.

In this case, as means for setting the interlocking relationship between the lines L1, L2, L3 and the controlled devices M1, M2, M3, setting by a diode matrix, setting by a dip switch, setting by RAM, setting by ROM And is known.

The setting by the diode matrix is such that three horizontal lines connected to each of the lines L1, L2 and L3 and three vertical lines connected to each of the controlled devices M1, M2 and M3 are diodes. Connected and therefore
All the lines are initially connected to all the controlled devices, and unnecessary connections among them are disconnected by a nipper or the like, and a desired interlocking relationship is set. When the setting by the diode matrix is adopted, there is a problem that the work of cutting unnecessary connection with a nipper or the like is complicated, and in order to change the interlocking relation after setting once, another operation such as a soldering iron is required. There is a problem that a tool is required, and the operation of changing the interlocking relationship is complicated.

The setting by the dip switch is provided by providing a microcomputer, connecting the dip switches one by one to each input port thereof, and determining which dip switch is associated with which controlled device on which line. is there. For example, the first DIP switch is associated with the line L1 and the controlled device M1, the second DIP switch is associated with the line L1 and the controlled device M2, and the third DIP switch is associated with the line L1. If the first DIP switch is ON, the control is performed such that the controlled device M1 is activated when the fire detector of the line L1 is activated. If the eye dip switch is off, line L
Even if one fire detector operates, the controlled apparatus M2 is not operated. When the setting by this DIP switch is adopted, the number of DIP switches equal to the number of lines × the number of controlled devices is required, and the space for installing the DIP switches becomes large, and at least the number of ports of the microcomputer by the number of DIP switches And the number of ports increases.

The setting by the RAM is to store interlock information indicating an interlock relationship between a line to which a fire detector is connected and a controlled device such as a smoke elimination device in the RAM. This RAM
If the setting is adopted, there is a problem that a backup power supply is required in case of non-installation such as during factory stock, transport, standby at the site, etc. or in case of power failure, even if the backup power supply is provided, When the power is turned off, it is necessary to reset the setting, and there is a problem that the reliability is lacking.

[0008]

On the other hand, the setting by the ROM does not require a backup power supply, and the interlocking relationship between the line and the controlled device is reliably maintained. However, RO
According to the setting by M, when it is necessary to change the interlocking relationship between the line and the controlled device due to addition or deletion of a partition, etc., the contents of the interlocking change are stored in the ROM.
The writer writes the data in a rewritable ROM. After the changed contents are written in the ROM, it is necessary to insert the pins of the changed ROM into a connector of a receiver or the like. When inserting pins into this connector, ROM pins may be damaged,
There is a problem that internal damage, poor contact, and the like are likely to occur.

If it is necessary to change the interlocking relationship between the line and the controlled device at the site or the like, to prevent damage to the ROM pins and damage to the ROM inside due to static electricity,
A keyboard for inputting interlocking information indicating an interlocking relationship between the line and the controlled device, and a ROM writer for writing the interlocking information to the ROM while the ROM is connected to the fire alarming equipment are provided in the fire alarming equipment. It is possible.

However, according to this idea, when input of interlocking information is started using a keyboard, the above R
Since the operation of the OM is stopped, the activation of the controlled device is stopped during the input. During this time, if a fire signal is generated, there arises a problem that the controlled device to be operated does not operate. By the way, there is a limit to the speed of key input by humans.Moreover, as the number of lines and the number of controlled devices increase, the input time is required to be longer in proportion to the number. If the above-mentioned interlocking relation is considered or the above-mentioned interlocking relation is reviewed, there arises a problem that the total time of key input becomes longer.

The present invention relates to a case in which a ROM for storing interlocking information indicating an interlocking relationship between a line or a fire detector and a controlled device is connected to a fire alarm system while rewriting the interlocking information, or a new interlocking operation. When replacing the ROM in which the information is stored, even if the input time of the interlock information to be rewritten is long or the time of replacing the ROM in which the new interlock information is stored is long, the start / stop of the controlled device is stopped. It is an object of the present invention to provide a fire alarm system that can eliminate the occurrence of time and can prevent the controlled device from being activated in an incorrect interlocking relationship.

[0012]

According to the present invention, there is provided a rewritable first ROM which stores a link to which a fire detector is connected or an interlocking relationship between a fire detector and a controlled device such as a smoke evacuator.
And a second ROM for storing a minimum necessary control content corresponding to the line to which the fire detector is connected or the fire detector. When the fire detector detects a fire, the first ROM is always stored in the first ROM. The controlled device is controlled in accordance with the written relationship, while the first ROM is being rewritten or replaced, when the fire detector detects a fire,
The controlled device is controlled in accordance with the interlock relationship written in the second ROM.

[0013]

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

In this embodiment, a plurality of repeaters T1, T2, T3,... Are connected to a fire receiver RE. The repeater T1 is connected to a line L1 to which a fire detector SE is connected, and A smoke exhaust damper MD as a device is connected, and a bold line in the fire receiver RE and the repeater T1 indicates a bus. Similarly to the repeater T1, the repeaters T2, T3,.
, And the smoke exhaust damper MD are connected. The fire detector SE outputs a fire signal when detecting a fire or outputs a physical quantity signal of the detected fire phenomenon. The fire receiver RE is a microprocessor M
PU1, ROMs 11, 12, a first ROM 13, a second ROM 14, a RAM 21, a transmitting / receiving unit TRX1,
Display unit DP, operation unit OP, interfaces 31 to 3
And 3.

The ROM 11 is an area for storing the programs shown in the flowcharts of FIGS.
2 is a storage area for each number of the repeaters T1,... And the type of terminal.

The first ROM 13 stores EP-ROM or EEP-RO for storing interlock information indicating an interlock relationship between a line to which a fire detector is connected and a controlled device such as a smoke evacuator.
M, etc., which is a rewritable memory, and is used to control a controlled device that is linked to a fire detector that has detected the fire when a predetermined fire detector detects the fire. . The second ROM 14 is a ROM that stores a minimum necessary control content corresponding to the fire area, that is, the interlocking relationship between the fire receiving circuit and the control line is set to the same area (1).
This is a ROM set to 1).

That is, normally, when the fire detector detects a fire, the controlled device is controlled in accordance with the interlocking relationship written in the first ROM 13.
When the fire detector detects a fire while rewriting or replacing 3, the controlled device is controlled in accordance with the interlocking relationship written in the second ROM 14.

The RAM 21 is a work area, the display unit DP has a CRT, a display lamp, and the like.
It has various switches such as switches SW0 to SW8 and control switches shown in FIG. The operation unit OP is an example of an information input unit that inputs interlocking information indicating an interlocking relationship between a line and a controlled device. Further, the RAM 21 is an example of a RAM that stores the link information input by the operation unit OP.

Further, the microprocessors MPU1 and R
The OM 11 controls the controlled device in accordance with the interlock relationship written in the first ROM 13 when the fire detector detects a fire. This is an example of a control device that controls the controlled device in accordance with the interlocking relationship written in the second ROM 14 when the sensor detects a fire, and a first ROM 13 capable of rewriting the interlocking information is connected to the fire alarm device. This is an example of a ROM writer that writes data into the first ROM 13 in a state where the ROM writer is in a closed state.

The other repeaters T2,... Are the same as the repeater T1.

The repeater T1 is a microprocessor MPU
2, a ROM 15, a ROM 16, a RAM 22, a flue gas damper control circuit ERC, a transmission / reception unit TRX2, and interfaces 34 to 36. Further, a fire detector SE and a smoke exhaust damper MD are connected to the repeater T1.

The ROM 15 is a storage area for a program for controlling the whole of the repeater T1, the ROM 16 is a storage area for its own address, and the RAM 22 is a work area. The transmitting / receiving unit TRX2 is similar to the transmitting / receiving unit TRX1.

FIG. 2 shows the fire receiver R in the above embodiment.
It is a flowchart which shows operation | movement of E.

First, when a fire signal is received (S1, S
2) The fire light is turned on (S3), the main sound and the district sound are sounded (S4), and the district light is turned on (S5).
3 is determined. That is, if the first ROM 13 is not being replaced with a new first ROM (the first ROM 13 is inserted into the connector or the like) (S6) and the first ROM 13 is not being rewritten (S7), the interlocking information stored in the first ROM 13 Is read (S8). Then, the smoke control device is controlled based on the read-out interlock information (S
9). That is, as shown in FIG. 3, the smoke control device is controlled based on the interlocking information before the contents of the first ROM 13 are changed. Alternatively, if the contents of the first ROM 13 have been changed, for example, as shown in FIG. 4, the smoke control device is controlled based on the changed link information.

On the other hand, when the state of the first ROM 13 is determined, if the first ROM 13 is disconnected from its connector or the like (S6) in order to replace the first ROM 13 with a new first ROM, the first ROM 13 is stored in the second ROM 14. Read the interlock information, and based on the read interlock information,
The smoke control device is controlled (S9). In the second ROM 14,
As shown in FIG. 5, the interlocking relationship is stored such that only one controlled device is interlocked with one line. That is, only the controlled device M1 is connected to the line L1,
Only the controlled device M2 is connected to the line L2, and the line L3
Is connected only to the controlled device M3. In this way, even while the first ROM 13 is being replaced, the interlocking relationship between the line and the controlled device does not become abnormal,
The necessary minimum control is performed for the fire area.

Also, when the first ROM 13 is being rewritten (S7), the interlocking information stored in the second ROM 14 is read out (S10), so that the interlocking relationship between the line and the controlled device does not become abnormal. In addition, the necessary minimum control is performed for the fire area.

FIG. 6 shows the fire receiver R in the above embodiment.
FIG. 9 is a diagram specifically showing an operation unit OP of E.

In this figure, switches SW0, SW
1,..., SW7 are switches for determining the contents of bits 0, 1,. It is "0". When the predetermined bit is “1”, the controlled device corresponding to the bit operates. The switch SW8 is an input confirmation switch. That is, the switches SW0, SW1,
.., SW7 is a switch for inputting data (linked information) indicating which controlled device is linked to the predetermined line. Note that a numeric keypad may be used instead of the switches SW0 to SW7, and in this case, a return key may be used instead of the input confirmation switch SW8.

Next, an operation for changing the interlocking information stored in the first ROM 13 will be described.

FIG. 3 shows the first ROM in the above embodiment.
13 is a diagram illustrating an example of an interlocking relationship before changing the contents of a first ROM and contents of a first ROM in this case. FIG. FIG. 3A shows an example of the interlocking relationship before the contents of the first ROM 13 are changed, and FIG. 3B shows the contents of the first ROM 13 in this case.

In the interlocking relationship before the contents of the first ROM 13 are changed, when the fire detector connected to the line L1 detects a fire, the controlled equipment M1 (for example, the smoke damper MD shown in FIG. 1) and M2 Is activated and the line L2
The controlled devices M2 and M3 are activated when the fire detector connected to the line detects a fire, and only the controlled device M3 is activated when the fire detector connected to the line L3 detects a fire. It is supposed to.

Looking at this from the contents of the first ROM 13 (interlock information indicating the interlock relationship between the line and the controlled device), FIG.
As shown in (2), addresses 00, 01, and 02 correspond to lines L1, L2, and L3, respectively, and correspond to the data of bits 7 to 0 shown on the right side of each address. Bits 0, 1, 2, 3, 4, 5, 6, 7 are:
The controlled devices M1, M2, M3, M4, M5,
If the data corresponds to M6, M7, and M8 and the data is "1", when the fire detector installed on the line of the address corresponding to the data detects a fire, the controlled device corresponding to the data is Start up, data is "0"
In the case of, it indicates that when the fire detector installed on the line of the address corresponding to the data detects a fire, the controlled device corresponding to the data does not start.

FIG. 4 shows the first ROM in the above embodiment.
13 is a diagram illustrating an example of an interlocking relationship after changing the content of the first ROM 13 and the content of the first ROM 13 in this case. FIG. After the change of the interlocking relationship, when the fire detector connected to the line L1 detects a fire, the controlled devices M1 and M3 are activated, and the fire detector connected to the line L2 detects the fire. Then, the controlled devices M1 and M3 are activated, and when the fire detector connected to the line L3 detects a fire, the controlled device M2 is activated. FIG. 4B shows the contents of the first ROM 13 (the contents after the change) in this case.

In the changed link information, bit 1 of the data corresponding to address 00 (line L1) is changed to "0" and bit 2 is changed to "1". In the data corresponding to the address 01 (line L2), bit 0 is changed to “1” and bit 1 is changed to “0”.

A specific operation for changing the interlocking information stored in the first ROM 13 will be described below.

FIG. 7 shows the first ROM in the above embodiment.
13 is a flowchart showing an operation in the case where an EEP-ROM is used as 13, which is an operation for changing the interlocking information stored in the first ROM 13.

First, the changed link information is input using a keyboard (S21). That is, using the switches SW0 to SW7 in the operation unit OP, first, data (interlocking information) indicating which controlled device has an interlocking relationship with the line L1 is input. That is, the switches SW0 to SW0
SW7 corresponds to bits 0 to 7, respectively, and among the switches SW0 to SW7, the bit corresponding to the turned on switch becomes "1" as shown in FIG. 4B, and the controlled device corresponding to the bit Is set to be activated, the bit corresponding to the switch that has been turned off becomes “0”, and the controlled device corresponding to that bit is set not to be activated. Thereafter, the input confirmation switch SW8 is turned on.

As a result, the interlocking information of the next line L2 can be input, and new interlocking information on the line L2 is input using the switches SW0 to SW7, and the input confirmation switch SW8 is turned on. Hereinafter, similarly, the interlocking information on other lines is input. In this embodiment, an address is automatically set without inputting an address indicating which line the line is, and when data input of one address is completed, the address is incremented by one.

The interlocking information input in this way is RA
It is stored in M21 (S22). When the input link information becomes 3 bytes (S23), the data format is changed to the write format (S24), reading from the first ROM 13 is prohibited (S25), and the chip select signal is turned on (S26). A write command is transmitted to the first ROM 13 (S27). At this time, if the write busy flag is off (S28), the write start address (AD) is transmitted to the first ROM 13 (S31), and the address (AD) is set.
Data (data of the line L1) to be written into the first ROM 13
(S32), and subsequently the address (AD + 1)
(Data of line L2), address (AD
+2) is transmitted to the first ROM 13 (S33, S34), and the chip select signal is turned off (S35). That is, in the above embodiment, the data is sent to the first ROM 13 serially, the data is converted into parallel by the shift register in the first ROM 13, and the data of three bytes is stored in the first ROM 13.
Written at the same time.

The write addresses (AD) to (AD +
It waits for the time to write the data to be written in 2) to the first ROM 13 (S36). Specifically, it waits for a time of about 120 ms. Then, the prohibition of reading of the first ROM 13 is released (S41), and if there is no information to be written in the first ROM 13 (if there is no information to be rewritten).
(S42), the above series of operations ends. 1st ROM1
If there is information to be written in 3 (if there is information to be rewritten) (S42), the address obtained by adding 3 is set to a new address (S43), and the process returns to S21.

In the above embodiment, the case where an EEP-ROM is used as a rewritable memory has been described, but an EP-ROM may be used instead of the EEP-ROM. In this case, an ultraviolet irradiation device for erasing the stored contents of the EP-ROM may be provided to erase the contents before changing the stored contents.

Also, the case where the rewritable memory for storing the interlocking information is provided in the receiver of the R-type fire alarm system has been described, but the rewritable memory is provided in the repeater or the receiver of the P-type fire alarm system. You may do so.

In the above embodiment, the rewriting of the interlocking information of the rewritable memory is performed in units of a plurality of lines, but may be performed in units of lines or in units of fire detectors. In this case, for each line or fire sensor requiring rewriting, an address for designating the line or fire sensor and new interlock information for the line or fire sensor are input from the information input means. What should I do?

Further, in the above embodiment, the case where the information input means and the ROM writer are installed in the fire alarm system has been described. However, at least one of the information input means and the ROM writer is connected to the fire alarm. It may be provided outside the notification equipment.

[0045]

According to the present invention, a ROM for storing link information indicating a link between a line or a fire detector and a controlled device.
Is connected to the fire alarm system while rewriting the interlock information, or the ROM in which new interlock information is stored
In the case of replacing, the input time of the interlock information to be rewritten is long or the RO in which the new interlock information is stored
Even if the time for replacing with M is long, it is possible to eliminate the occurrence of the start / stop time of the controlled device,
There is an effect that it is possible to prevent the controlled device from being activated due to an incorrect interlocking relationship.

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing an operation of the fire receiver RE in the embodiment.

FIG. 3 is a diagram showing an interlocking relationship before changing the contents of a first ROM 13 and contents of the first ROM 13 in the embodiment.

FIG. 4 is a diagram showing the interlocking relationship after changing the contents of the first ROM 13 and the contents of the first ROM 13 in the embodiment.

FIG. 5 is a diagram showing an interlocking relationship in a second ROM and contents of the second ROM in the embodiment.

FIG. 6 shows an operation unit O of the fire receiver RE in the embodiment.
It is a figure which shows P concretely.

FIG. 7 is a flowchart showing an operation of changing the contents of the first ROM 13 in the embodiment.

[Explanation of symbols]

 RE: fire receiver, SE: fire detector, MD: smoke exhaust damper, T1, T2, T3: repeater, 1: microprocessor, 13: first ROM (rewritable ROM), 14: second ROM, OP ... Operation unit.

Claims (3)

(57) [Claims] A rewritable first ROM for storing a link to which a fire detector is connected or a link between the fire detector and a controlled device such as a smoke evacuator; and a line to which the fire detector is connected. A second ROM for storing minimum necessary control contents corresponding to the fire detector; and a write for detecting that the first ROM is being rewritten.
Replacement detection means; normally, when the fire detector detects a fire, controls the controlled device in accordance with the interlocking relationship written in the first ROM , while the first ROM is rewriting
Is detected by the rewrite detecting means,
According to the control contents written in the second ROM,
Control means for controlling a control device; and a fire alarm system. 2. A fire alarm or a line to which a fire detector is connected.
Memorize the interlocking relationship between the detector and controlled equipment such as smoke control
A rewritable first ROM , corresponding to the line or fire detector to which the fire detector is connected
A second ROM for storing minimum necessary control contents; and a non-installation device for detecting that the first ROM is not installed.
A wear detecting means; is always when the fire detector detects a fire, the
According to the interlock relationship written in the first ROM, the
Controls the control device, while the first ROM is not mounted.
Is detected by the non-wearing detection means, the second R
The controlled machine described above according to the control content written in the OM
Fire alarm system characterized by having a; and control means for controlling the vessel. 3. The information input means for inputting interlocking information indicating an interlocking relationship between the line or the fire detector and the controlled device, and / or the first ROM is a fire alarm system. And a ROM writer for writing to the first ROM while being connected to the fire alarm system is provided inside the fire alarm system or outside the fire alarm system.