JP3212688B2 - Fire alarm system - Google Patents

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 in which various devices such as a monitoring terminal device and a controlled terminal device are connected to a fire receiver via a relay or not.

[0002]

2. Description of the Related Art Conventionally, a fire alarm system of a terminal detects a fire and sends out a fire signal, and a fire receiver receives the signal and performs a fire operation such as an alarm. A fire detector is a so-called analog type sensor that sends out a detection value related to a fire.A fire receiver makes a fire discrimination based on the detection value, and the fire discrimination system is linked with controlled terminal equipment such as smoke prevention equipment. There is.

Generally, the former system is intended for small-scale systems, and the latter system is intended for large-scale systems. However, in the latter case, in recent years, the height of buildings and the number of functions of facilities have been increasing. The capacity that the fire receiver can control is approaching its limit. Therefore, the system is hierarchized and multiple relays are connected to the fire receiver, and each relay monitors the operation status of a large number of terminal devices (monitoring terminal devices such as fire detectors and controlled terminal devices). Or make various judgments such as fire judgments based on information from those terminal devices.These functions are the same as those originally performed by fire receivers. The system collects the results and manages the system at all times (fire operation, recovery operation, transfer, etc.) based on the collected results. For example, on February 27, 1992, Patent application Hei 4-4 filed
No. 1588, filed on Feb. 4, 1992, Japanese Patent Application No. 4-
No. 19176 and Japanese Patent Application No. 4-19177 filed on Feb. 4, 1992 have also been proposed.

[0004] In any of the fire alarm systems having any of the system configurations, when various monitoring terminal devices detect abnormal environmental conditions or when controlled terminal devices operate, their signals are reliably transmitted to the fire receiver. It is desirable to confirm the operation state of the fire alarm system by performing various tests including a test for confirming whether or not a related operation to be performed is reliably performed.

Accordingly, in the fire alarm system, various tests can be performed from the panel of the fire receiver, that is, the operation unit. As a test that can be performed from the fire receiver panel, for example, by operating the fire receiver, a test signal is remotely transmitted to a test circuit of the terminal, and the terminal is actually operated by the test circuit of the terminal to operate the terminal. The remote test for each terminal that returns the remote control, the automatic test for sequentially performing such a remote test to all the terminals by the fire receiver, and the operation determination unit in the fire receiver and the repeater, etc. A pseudo operation state of the control terminal device or the like (such as a short circuit of a line to the controlled terminal device or an operation flag indicating that the controlled terminal device has operated) is created, and a pseudo operation state is created in association with the pseudo operation state. An operation test that tests whether the operation to be performed is performed normally, a backup power test that checks the voltage of the backup power supply of the fire receiver that is the entire equipment, and lighting of the LED and the like on the panel of the fire receiver Confirmation A Cormorant display unit testing, but is provided generally.

[0006] Of the above tests, remote tests and automatic tests are:
The terminal itself is operated by operating a test circuit provided in the terminal, and the operation test, the standby power supply test, and the display unit test are performed in the fire receiver (or including the repeater). The remote test, automatic test, and operation test are tests related to terminal operation.
The display unit test is a test related to other than that. In the above test, it is general that a manual operation is performed periodically.

[0007]

Problems to be Solved by the Invention The above-mentioned tests become more complicated as the scale of the system increases, so that such tests can be carried out periodically and automatically with as little human intervention as possible. It is very preferable. Accordingly, an object of the present invention is to make it possible to automatically and comprehensively perform various tests that can be performed from the surface of a fire receiver in a fire alarm system as a system test.

[0008]

According to the present invention, there is provided, in accordance with the present invention, a plurality of devices, including controlled terminal devices and monitoring terminal devices, connected to a fire receiver via a relay or without a relay. In the fire alarm equipment connected to the system, a system test setting means provided in the fire receiver for setting all equipment to a system test state, and a system including various tests that can be performed from the fire receiver side A fire alarm system comprising: a system test means provided in the fire receiver for automatically performing a test sequentially.

The fire receiver has a clock, and the system test means can perform a system test at a predetermined time or period. The system test may include a test of a state of a standby power supply of each unit and a test of a fire detection operation of the terminal, and may further include an operation test of a controlled terminal device, and , The relay connected to the fire receiver may be provided with a clock, and the system test may include time adjustment between the clock of the fire receiver and the clock of the repeater. It can also include testing.

[0010]

[Function] On the fire receiver side, all equipment is set to the system test state by the system test setting means, and then system tests including various tests are automatically performed sequentially by the system test means provided in the fire receiver. Go. For example,
The system tests shall include automatic power supply and automatic remote test of all terminals, operation test of controlled terminal equipment, time adjustment and display of fire receiver, which can be performed automatically. If this is done, it is possible to confirm the state of the equipment installed in the system and the power supply while minimizing human intervention, and to confirm that the system is operable. In addition, by having a clock to allow system tests including these tests to be performed periodically, such as once a week, human intervention is further reduced, and the overall state of the system is comprehensively improved. Can test.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG.
Are, for example, Japanese Patent Application Nos. 4-19177 and 4-1917 filed on Feb. 4, 1992 by the present applicant.
No. 6, a configuration showing an example of a fire alarm system to which the present invention can be applied, as described in Japanese Patent Application No. 4-41588 filed on Feb. 27, 1992 by the present applicant. In the figure, a plurality of repeaters RP are shown connected to the fire receiver RE. The fire receiver RE and each repeater RP are connected in a loop by two systems, a main loop signal line 21 for transmitting signals in one direction and a sub-loop signal line 22 for transmitting signals in the other direction. Have been. Note that the signal line L1 is collectively referred to as the signal line L1 including the main loop signal line 21 and the sub loop signal line 22.

A polling signal, a return signal, and various other signals are transmitted from the fire receiver RE to each repeater RP, and from each repeater RP to the fire receiver RE via both the main loop signal line 21 and the sub-loop signal line 22. In this case, the fire receiver RE and each of the repeaters RP confirm that no signal is flowing to both of the signal lines 21 and 22 at the time of signal transmission. The same signal is transmitted to both the line 21 and the sub-loop signal line 22. Therefore, the fire receiver RE and the repeater RP receive the same signal on both the main loop signal line 21 and the sub-loop signal line 22 at the time of signal reception, but receive the signal from the main loop signal line 21 side. Is actually taken into the signal processing unit having a microcomputer or the like inside the fire receiver RE or the repeater RP for signal processing only by the signal on the main loop signal line 21 side. Line 2
When there is no reception from the first side, the signal received on the sub-loop signal line 22 side is taken into the signal processing unit inside the fire receiver RE or the repeater RP.

Various terminal devices are connected to each repeater RP, including a monitoring terminal device such as a sensor and a controlled terminal device such as a fire door via a child repeater. Monitoring repeater 31 as a child repeater via L2,
A control repeater 32, a gas leak repeater 33, an analog fire detector (photoelectric type, ionization type, thermal type, etc.) 34 and the like are connected, and a display 36 is connected via a signal line L3. Shown. The monitoring repeater 31 includes a normal type smoke detector 41, a differential type sensor 42, a constant temperature type sensor 43 as a monitoring terminal device, a terminator 44, an area sound device (area bell) 46, and a transmission. And a control terminal device 51 such as a fire door closing device and a smoke exhaust damper opening device are connected to the control repeater 32. The leak relay 33 is shown connected to a gas leak detector 61 as a monitoring terminal device. The district sound device 46 is a type of terminal to be controlled.

A display / operation device 71 can be detachably connected to each repeater RP. By connecting the display / operation device 71 to the repeater RP, commands and the like originally sent from the fire receiver RE are sent from the display / operation device 71 via the repeater RP, and The data to be displayed on the receiver RE can be displayed on the display / operation device 71 via the repeater RP.

With this configuration, normally, in accordance with a polling signal from the fire receiver RE via the main loop signal line 21, the repeater RP takes in signals from various sensors and performs signal processing for fire monitoring. The result is returned to the fire receiver RE, and when the occurrence of a fire is detected, the operation of a controlled terminal device such as a fire door is controlled by a command from the fire receiver RE.

FIG. 2 shows a block diagram of the inside of the fire receiver RE in FIG. 1. In the fire receiver RE shown in FIG.
The OM 11 is a storage area for programs and the like including all operations, the ROM 12 is a storage area for predetermined items such as addresses and instruction codes of each repeater, the RAM 11 is a work area,
AM 12 is a storage area for storing a database of all terminals collected from each repeater RP, RAM 13 is a storage area for storing a system test mode flag indicating a state of a system test, and RAM 14 is a system area. A storage area for storing each test result during the test, RA
M15 is a storage area for storing time and interval settings for periodically performing a system test, OP is an operation unit for inputting with a switch such as a system test switch SW1 or a numeric keypad, and DP is an operation unit. An indicator light such as a test light LED1 or the like using an LED or a light emitting diode or a display unit including an LCD or a liquid crystal display, etc. Test control section of power supply, T
RX11 is a signal transmitting / receiving unit including a parallel / serial converter and a serial / parallel converter for transmitting / receiving signals to / from each repeater RP via the signal line L1, and IF11 to IF15 are interfaces.

One of the repeaters RP in FIG. 1, for example, n
A block circuit diagram of the inside of the repeater is shown in FIG. The same applies to the internal circuits in other repeaters RP. In the n-th repeater RP shown in FIG.
A microprocessor and a ROM 21 are storage areas for programs including all operations, a ROM 22 is a storage area for predetermined items such as a self-address, an instruction code, a fire determination reference,
The ROM 23 is a storage area for a database or a link table of each terminal device, the RAM 21 is a work area, the RAM 22
A storage area for collecting information from each terminal device and storing a fire signal and an operation state of the controlled terminal device;
Reference numeral 3 denotes a storage area for storing a system test mode flag indicating a state of a system test, and a RAM 24
Is a storage area for storing each test result under test, C
L2 is a clock for recording the sensor level trend data of the sensor and time of various state changes, PE2 is a standby power supply, TC2 is a test control of a standby power supply for starting discharge of the standby power supply PE2 and performing a voltage test and the like. Part, TRX21-TRX2
3 are each a fire receiver RE via a signal line L1.
A signal transmitting / receiving unit such as a parallel / serial converter or a serial / parallel converter for transmitting / receiving a signal to / from each terminal device via a signal line L2 and the display device 36 via a signal line L3;
F25 is an interface.

Hereinafter, the operation of the fire receiver RE will be described with reference to FIGS.
1 to 3 using the flowchart of FIG. 8 and the flowcharts of FIGS. 9 and 11 showing the operation of the repeater RP.
The operation of the fire alarm system shown in FIG.

First, the operation of the fire receiver RE will be described. First, it is determined whether the time read from the clock CL1 is the time at which the system test is performed (steps 108 to 11).
2) Or, the operation unit O using numeric keys or various switches
It is checked whether there is an input from P (step 114), and it is not the time to perform the system test (step 112).
N), if there is no input from the operation unit OP (step 1)
14 N), 1st to Nth (N = 3 in the embodiment of FIG. 1)
The status information return command is sequentially and cyclically sent to each of the repeaters RP and is called, and the returned status information is read (step 116). A fire signal (including interlocking data) of a sensor indicating the occurrence of a fire, It is confirmed whether or not there is a state change such as operation of the control terminal device (step 118), and necessary processing is performed (steps 120 and 122). Here, the link data is the storage area ROM in each repeater.
23, for example, when a certain sensor detects and operates a sensor level indicating the occurrence of a fire, such as a fire door to be linked in conjunction with the alert or operation of the sensor. This is data relating to various controlled terminal devices. Then, when the sensor operates, the relay device controls the controlled terminal device related to the operated sensor,
In addition to performing control based on the interlock data in the storage area ROM 23, the content of the interlock data is sent to the fire receiver together with the fire signal.

When there is an input from the operation unit OP (Y in step 114), a system test which may be generated by, for example, operating a system test switch SW1 provided in the operation unit OP. Input or not (Fig. 5
Step 126) or whether the input is a system test time setting input (step 150 in FIG. 6), and if neither the system test input nor the time setting input is present (step 1).
26 (N in step 150), processing is performed according to the input contents (step 154 in FIG. 6), and the process returns to the flow in FIG. Inputs that are neither system test inputs nor time setting inputs include reprinting test results and mode settings.
There are various others.

In the time setting input, a time and a cycle for periodically performing a system test are stored in the storage area RAM 15 in advance, or the operation unit OP is used to change the already stored time and cycle. If there is a time setting input from the operation unit OP (Y in step 150), the input time and cycle are stored in the storage area R.
It is stored in the AM 15 (step 152). in this way,
If the test is set to be performed periodically, there is no need for the operator to input the system test while paying attention to the period.

Whether there is a system test input from the operation unit OP (Y in step 126), or the time (step 108) read from the clock CL1 is set in the storage area RAM 15 (step 110). If a system test input occurs because of a match (Y in step 112), a system test is performed. First, a test result storage area RAM 14
At the same time, the system test mode flag is set in the storage area RAM 13 (step 128), and a system test command is sent out on the signal line L1 by a code designating all the repeaters RP (step 130) to test the entire system. The mode is set (Y in step 132).

Then, time setting (step 200)
A preliminary power supply test (Step 300), an automatic test (Step 400), and a display unit test (Step 500) are sequentially performed.
The result is sent to the display unit DP and displayed on the LCD or the like (steps 134, 136, 138, 140). At the same time, necessary operations such as printing by a printer are performed.

The operation in each test will be described with reference to FIGS. 7 and 8. First, the time adjustment 200 reads the time from the clock CL1 (step 202), and transfers the time to the signal line L1 using a code designating all the repeaters RP. It is sent (step 204). Then, after waiting for a time setting completion signal from each repeater RP (Y in step 206), the time setting completion is stored in the storage area RAM 14 (step 20).
8) This is displayed in step 134 described above.

The standby power supply test 300 sends a test instruction to the test control unit TC1 for testing the standby power supply PE1 of the fire receiver RE itself, and sends a standby power supply test instruction to the signal line L3 using a code designating all the repeaters RP. And sends a test to the standby power supply PE2 of each repeater RP (step 30).
2). The contents of the backup power supply test are described, for example, in the specification attached to Japanese Patent Application No. 4-103119 entitled "Fire Alarm System" filed on Apr. 22, 1992 by the present applicant. May be. If there is a test response from all the repeaters RP (step 304), if there is a defective part, the defect of the part is determined. (Step 306).

The automatic test 400 sends an automatic test command by a code designating all the repeaters RP (step 40).
2) The individual terminals connected to each repeater RP are tested from the repeater RP. Then, after waiting for the test result from each of the repeaters RP (Y in step 404), if there is a defective part, the defect of the part is determined. It is stored together with the test result of the power supply test (step 406).

The display unit test 500 has a storage area ROM
12, all indications are turned on for each block such as an LED on the board of the display unit DP of the fire receiver RE set to 12 (steps 502 to 512). For example, the end of the test is stored in the storage area RAM 14 together with the results of the previous time adjustment, the preliminary power supply test, and the automatic test (step 514).

When the test is completed, a test release command is sent to all the repeaters RP (step 142). If there is a response from all the repeaters RP (Y in step 144), the storage area RAM
In addition to deleting the system test mode flag in the memory area 13 (step 146), the contents in the storage area RAM 14 are erased (step 148).

Next, the operation of the n-th repeater RP will be described with reference to the flowcharts shown in FIGS. nth repeater R
P first checks whether or not there is a call or command from the fire receiver RE (step 608). If there is no call or command (N in step 608),
The K various terminal devices connected to the n-th repeater RP are sequentially and cyclically called, and the sensor level is read mainly from the sensor and the operation state is read from the controlled terminal device (step 610). The stored information is stored in the storage area RAM 22 (step 612). In this case, regarding the sensor level, the result of determining whether or not a fire has occurred by comparing it with a fire determination criterion is stored in the storage area RAM22. The content stored in the storage area RAM 22 is sent to the fire receiver RE when there is a status information return command from the fire receiver RE.

The fire receiver RE in step 116 of FIG.
(Y in step 608), and if it is not a system test instruction (N in step 616, N in 622, N in 628, and N in 636), the instruction is followed. Perform processing (step 65)
6). In the case of a status information return command other than the system test command, for example, the content stored in the storage area RAM 22 is read in step 612 and sent to the fire receiver RE as a process according to the content of the command.

There is a call or command from the fire receiver RE (Y in step 608), which is the system test command sent from the fire receiver RE to all the repeaters RP in step 130 in FIG. If it is (Y in step 616 in FIG. 10), the system test mode flag is set in the storage area RAM 23 (step 618), and the completion of the setting of the system test mode is returned to the fire receiver RE (step 620).

When the fire receiver RE receives the system test mode setting completion from all the repeaters RP and the entire system enters the test mode, the fire receiver RE next issues a time setting command in step 204 of FIG. Then, the repeater RP, which has received the time setting command (step 622), sets the clock CL2 with the time according to the command (step 624),
The setting completion is transmitted to the fire receiver RE (step 62).
6).

Similarly, when the standby power supply test command in step 302 of FIG. 7 is received from the fire receiver RE (Y in step 628), a test command is sent to the test control unit TC2 that tests the backup power supply PE2 (step 630). , The backup power supply PE2 is tested. Then, after waiting for the result (Y in step 632), the result is transmitted to the fire receiver RE (step 634).

When the automatic test command transmitted in step 402 of FIG. 8 is received (Y in step 636),
A test command is sent to each of the K terminals connected to the repeater RP in order to perform a test (step 64).
2). Here, for example, a case where the k-th terminal (k = 1 to K) is the smoke detector 34 illustrated in FIG. 3 will be described. Normally, the smoke detector 34 of the k-th terminal detects the smoke density (sensor level) of the monitoring area from the detection unit, stores it in the signal processing unit, and sends the value when called by the repeater. I have. When a test command is received from the repeater, a test unit that performs a test operation corresponding to the detection principle of the detection unit (irradiates the light receiving unit with test light in the case of the scattered light type) is started. The information collected by the repeater from the k-th terminal after the activation of the test unit is such that if the k-th terminal performs a normal operation, a sensor level according to the operation of the test unit can be obtained. If a proper sensor level is obtained, the repeater can determine that the k-th terminal is normal. When the terminal under test is a heat detector, the test section can be a heating means. Furthermore, when testing the controlled terminal device, a pseudo operation test can be performed without actually operating the device.
For example, a method of short-circuiting a signal line for giving a start command to a controlled terminal device, and a patent application entitled "Fire alarm equipment" (reference number K13690) filed on the same date as the present application by the present applicant. An operation flag indicating that the controlled terminal device has been operated is set in a storage area inside the repeater, and a test is performed to determine whether or not the related processing operation by setting the operation flag functions normally. A method or a method of setting an operation flag in a test unit inside the controlled terminal device may be used, and the method of the test unit is not limited.

After transmitting the test command, the repeater RP waits for a time (step 644), and then transmits a test result return command to the terminal (step 646). Test result for each storage area RAM2
4 (step 650). When the test is completed for all K terminals (Y in step 652), the result is transmitted to the fire receiver RE (step 654).

When all tests are completed, the fire receiver R
The test cancellation command is sent from the E side to all the repeaters in step 142.
When it is received by the repeater RP, the n-th repeater RP stores the storage area R set in step 618 by the test command.
The test mode is canceled by erasing the system test mode flag in the AM 23, and the completion of the cancellation of the system test mode is sent to the fire receiver RE (step 656). When the release of the system test mode is received in step 144 on the fire receiver RE side, as described above, step 1 is executed.
At 46, the system test mode flag in the storage area RAM 13 is erased, and at step 148, the storage area RA
The contents of M14 are erased, and the entire test is completed. This system test can be performed automatically on a regular basis and the results can be printed and printed out, so that the operator can confirm when he finds the output results of the system test. Thus, the state of the system can be grasped.

[0037]

As described above, according to the present invention, various tests that can be performed from the fire receiver side can be automatically and comprehensively performed sequentially, so that human intervention is minimized. In addition, there is an effect that the states of the equipment installed in the system and the power supply can be checked, and that the system can be operated.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a fire alarm system according to one embodiment of the present invention.

FIG. 2 is a block circuit diagram showing an internal circuit of the fire receiver RE shown in FIG.

FIG. 3 is a block circuit diagram showing an internal circuit of the repeater RP shown in FIG. 1 and an internal circuit of a terminal connected to the repeater RP.

FIG. 4 is a flowchart for explaining the operation of the fire receiver shown in FIG. 2;

FIG. 5 is a flowchart for explaining the operation of the fire receiver shown in FIG. 2;

FIG. 6 is a flowchart for explaining the operation of the fire receiver shown in FIG. 2;

FIG. 7 is a flowchart for explaining the operation of the fire receiver shown in FIG. 2;

FIG. 8 is a flowchart for explaining the operation of the fire receiver shown in FIG. 2;

FIG. 9 is a flowchart for explaining the operation of the repeater shown in FIG. 3;

FIG. 10 is a flowchart for explaining the operation of the repeater shown in FIG. 3;

FIG. 11 is a flowchart for explaining the operation of the repeater shown in FIG. 3;

[Explanation of symbols]

 RE Fire receiver RAM13 Storage area for system test mode flag RAM14 Storage area for test results RAM15 Storage area for time setting of system test CL1 Clock OP Operation unit SW1 System test switch DP display LED1 Test lamp TC1 Test control unit PE1 Backup power supply RP repeater RAM22 Storage area for terminal state RAM23 Storage area for system test mode flag RAM24 Storage area for test result CL2 Clock TC2 Test control unit PE2 Backup power supply

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-52-10699 (JP, A) JP-A-2-28797 (JP, A) JP-A 48-40399 (JP, A) JP-A 52-699 110595 (JP, A) JP 55-56294 (JP, A) JP 50-31798 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G08B 17/00 G08B 23 / 00-31/00

Claims (5)

(57) [Claims] 1. In a fire alarm system in which a plurality of devices including a controlled terminal device and a monitoring terminal device are connected to a fire receiver with or without a relay, all the devices are set to a system test state. System test setting means provided in the fire receiver, and a system provided in the fire receiver, which automatically and sequentially performs a system test including various tests that can be performed from the fire receiver side e Bei and testing means, wherein the system tests, at least, each part of the standby power supply Jo of
Alarm system that includes a test of the condition and a test of the fire detection operation of the terminal . 2. The fire alarm system according to claim 1, wherein the fire receiver has a clock, and causes the system test unit to perform the system test at predetermined times or intervals. Wherein the system tests, according to claim 1 or 2 of a fire alarm system comprising a pseudo-operation tests of the controlled terminal equipment. 4. A method in which a repeater connected to the fire receiver is provided with a clock, and the system test includes time adjustment of the clock of the fire receiver and the clock of the repeater. 3. A fire alarm system of any of 3 . Wherein said system test, either fire alarm system of claims 1 to 4 including a test of the display unit of the fire receiver.