JP3791467B2 - Multiplex transmission fire reception system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multiplex transmission fire receiving system in which a fire detector is connected to a sensor line derived from a fire receiver so that signals are transmitted and received in both directions.
[Prior art]
FIG. 4 is a schematic diagram of a multiplex transmission fire receiving system shown for explaining a conventional method for confirming local operation of a fire detector.
[0002]
Conventionally, a multiplex transmission fire receiving system has been introduced in which a fire detector is connected to a sensor line L derived from a fire receiver and a signal is transmitted and received in both directions in buildings and condominiums. Fire detectors B, B ... are installed in each room, floor, etc., and a fire receiver A is installed in a central monitoring room, a manager's room, etc., and the alarm signal from the fire detector B, smoke concentration, Fire occurrence is monitored based on data such as ambient temperature.
[0003]
In such a multiplex transmission fire receiving system, in order to check the operation of the fire detector B, the fire detector B is connected to the sensor line L, and then the actual smoke is brought close to the fire detector B. The local operation of the fire detector B was confirmed by a blow test method in which the fire receiver A confirms whether or not the fire detector B is activated.
[Problems to be solved by the invention]
However, in the conventional fire receiving system, the local operation confirmation of the fire detector B is not immediately executed when the fire detector B is connected to the sensor line L. For example, the connected fire detector B is not connected. Even if it is a non-defective product, it is necessary to replace the defective product based on the result of the subsequent local operation test, and the test result of the local operation confirmation is confirmed on the fire receiver A side. For this reason, at the site of the fire detector B, the above test results could not be immediately confirmed, and there was a problem that the construction efficiency was poor.
[0004]
The present invention has been made in consideration of the above circumstances, and it is an object of the present invention to confirm various local operations of the fire detector on site at the time of construction of the fire detector B, and to increase the construction efficiency.
[Means for Solving the Problems]
To achieve the above objective,
In the multiplex transmission fire receiving system according to the present invention, the polling signals specified by different sensor addresses are sequentially output to the detector line derived from the fire receiver, and the response from the fire detector to the polling signal is output. By specifying the polling control unit for receiving and processing the signal and the fire detector that received the response signal, when the predetermined test signal is output in sequence, the response signal that is returned is decoded to fire. And a control means for decoding the response control operation of the sensor, discriminating whether the sensor is normal or defective, and transmitting a control signal prepared in advance according to the discrimination result. In response to the predetermined test signal transmitted to the device, the response signal received from the fire detector is determined to be normal or defective, and the control signal transmitted in response to this, It was because storage has a self-test table, performs any test result, or to perform any operation, can be stored by the self-test table fire receiver.
[0005]
The self-test table is configured to be able to store the predetermined test signal and the control signal transmitted according to the determination result of normality or failure of the response signal in a rewritable manner. If you store the mode of the operation confirmation test that you plan to perform in this self-test table, select the local operation test of the fire detector according to the type of fire detector installed on the site, incidental equipment, etc. Can be implemented.
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0006]
FIG. 1 is a schematic block diagram for explaining an embodiment of the fire receiving system of the present invention.
[0007]
For buildings and condominiums, etc., a detector line L for transmitting and receiving signals in a time-division multiplex transmission system is connected between the fire receiver A and the fire detector B so that the signals can be transmitted and received in both directions. A transmission fire reception system is introduced. For example, fire detectors B, B... Are installed in each room or floor, and a fire receiver A is installed in a central monitoring room or a manager room. The occurrence of fire is monitored based on data such as smoke concentration and ambient temperature.
[0008]
The fire receiver A sequentially outputs a polling signal designated with different sensor addresses to the sensor line L, and also receives a response signal from the fire detector for the polling signal. The response control operation of the fire detector B is decoded by decoding the response signal returned when the fire detector B that has received the response signal is designated and the predetermined test signal is sequentially output. In addition, the control unit 2 is provided with a control unit 2 that determines normality and failure and transmits a control signal prepared in advance according to the determination result.
[0009]
The polling control unit 1 includes a transmission CPU 3 for performing communication with the fire detector B and a sensor control unit 4 for controlling the operation check lamp (or ringing means) 7 of the fire detector B. .
[0010]
The control means 2 manages the type of the fire detector B, decodes the response control operation of the fire detector B, determines its normality and failure, and is prepared in advance according to the determination result. The control signal is transmitted to the fire detector B. The response control operation includes the communication operation of the fire detector B, the pseudo test alarm operation of the fire detector B, and the operation of the operation check lamp 7 of the fire detector B. Any one or more of them are selected.
[0011]
Here, the communication operation of the fire detector B is an operation with or without a reply signal returned to the fire receiver 1 when the fire detector B is connected to the sensor line L, and a pseudo test notification. The operation is the operation of performing the alarm processing by the CPU without operating the detection unit of the fire detector B, and returning the alarm signal to the fire receiver 1, and the operation of the operation check lamp is the operation check lamp. It means the operation of lighting or flashing.
[0012]
As shown in FIG. 3, the control means 2 determines whether the response signal received from the fire detector B is normal or defective with respect to a predetermined test signal transmitted to the fire detector B, and according to this. A self-test table stored in advance in association with a control signal to be transmitted is provided, and the self-test table can be stored in a rewritable manner.
[0013]
In addition, the fire receiver A may be provided with a timer 5, and the operation of the operation confirmation lamp can be activated for a certain time by the timer 5.
[0014]
The fire sensor B includes a sensor base 5 and a sensor head 6 attached to the sensor base 5. The fire sensor B has an operation confirmation lamp 7 such as an LED or a sounding means such as a buzzer. .
[0015]
Next, a local operation confirmation method for the fire detector B will be described with reference to the flowchart of FIG.
[0016]
First, at the time of construction of the fire detector B, the fire receiver A is set to the local operation confirmation mode, and the sensor heads 6 are sequentially connected while sending a signal to the sensor base 5 of the fire detector B. (S1).
[0017]
At this time, if there is an abnormality in the connection confirmation with the fire receiver A, the operation check lamp 7 of the fire detector B is kept off (S2, S3).
[0018]
By looking at this operation check lamp 7, in the field, it is possible to immediately check defects other than the sensor head 6, and because the transmission line and base connected to this extinguished operation check lamp 7 are defective, wiring, sensor base 5 is replaced with a normal one (S4).
[0019]
On the other hand, if the connection confirmation with the fire receiver A is normal, the type information of the connected fire detector B is transmitted to the fire receiver 1, and the fire receiver 1 that has received the information receives the fire test command signal. And the result of the local operation test is returned from the fire detector B (S5 to S7).
[0020]
At this time, if there is an abnormality in the test result, the operation check lamp 7 of the fire detector B blinks and is turned off after a predetermined time by the timer 5 (S8 to S11).
[0021]
By looking at the operation check lamp 7, the sensor head 6 can be immediately confirmed to be defective in the field, and the sensor head 6 connected to the flashing operation check lamp 7 is replaced, and this is normal. It replaces with something (S12).
[0022]
On the other hand, if the result of the local operation test is normal, the operation check lamp 7 of the fire detector B is turned on, and is turned off after a certain period of time has elapsed by the timer 5 (S13 to S16).
[0023]
By looking at the operation confirmation lamp 7, it can be immediately confirmed on the site that the fire detector B is normal, and the next work for connecting the fire detector B is started (S17).
[0024]
In this embodiment, the operation check lamp 7 is turned on, blinks, or turned off to determine whether the fire detector B is normal or abnormal. Instead, an alarm sound or the like can be sounded, Or you may use combining both.
【The invention's effect】
As you can understand from the above explanation,
According to the multiplex transmission fire control system of the present invention, the control signal of the fire receiver, the local operation check of the fire detector, can in the field who has installed a fire detector, The row stomach any test, As a result, what operation is performed can be stored by the self-test table on the fire receiver side.
If the self-test table is rewritten, the local operation confirmation of the fire detector can be confirmed by a desired operation.
[Brief description of the drawings]
FIG. 1 is a schematic block diagram for explaining an embodiment of a fire receiving system of the present invention. FIG. 2 is a flowchart showing a local operation confirmation method of a fire detector . Schematic diagram of the multiplex transmission fire receiving system shown to explain the local operation confirmation method of the conventional fire detector 【Explanation of symbols】
A Fire receiver B Fire detector L Sensor line 1 Polling control unit 2 Control means 7 Operation check lamp (ringing means)

Claims (1)

In a multiplex transmission fire receiving system in which a fire detector is connected to a sensor line derived from a fire receiver and signals are transmitted and received in both directions.
  The fire receiver sequentially outputs a polling signal designated with different sensor addresses to the sensor line, and a polling control unit for receiving and processing a response signal from the fire sensor in response to the polling signal, and a response By specifying the fire detector that received the signal and sequentially outputting a predetermined test signal, by decoding the response signal that is returned, the response control operation of the fire detector is decoded and normal, A control means for determining a defect and transmitting a control signal prepared in advance according to the determination result,
  The control means associates the determination result of normality or failure of the response signal received from the fire detector with a predetermined test signal transmitted to the fire detector and a control signal transmitted in response thereto. A self-test table stored in advance, and the self-test table rewrites the predetermined test signal and a control signal transmitted according to a normal / defective determination result of the response signal to the predetermined test signal. A multiplex transmission fire receiving system that can be memorized.

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