JPH07234986A - Abnormality deciding method for sensor circuit and fire monitoring method and fire alarm monitor system using the abnormality deciding method - Google Patents

Abstract

PURPOSE:To provide an abnormality deciding method for sensor circuit, a fire monitoring method and a fire alarm monitor system which can perform the continuity tests of the sensor circuits and the fire alarm monitoring operations without connecting a terminator to each sensor circuit. CONSTITUTION:The continuity tests are applied to the sensor circuits L1-Ln prior to a monitoring operation, and the disconnection of a sensor circuit Lb is decided. The circuit Lb is once registered as an idle circuit in an idle circuit register memory of a fire receiver A. Then the registered circuit Lb is decided normal in a monitoring operation mode, and a continuity test is applied to the circuit Lb.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of discriminating a sensor line in a fire alarm system, a fire monitoring method, and a fire alarm monitoring system using the method.

[0002]

2. Description of the Related Art A test voltage is sequentially supplied from a fire receiver to a plurality of detector lines to which a fire detector is connected, and a change in the voltage level at that time is detected to detect an abnormal disconnection of the detector line. There is a fire alarm monitoring system that has been made available. In such a fire alarm monitoring system, as shown in FIG. 6, a terminator 1 is provided at the end of each of the plurality of sensor lines L1 to Ln connected to the fire receiver 100.
01 ... is connected, and when the test voltage is sequentially supplied from the fire receiver 100 to the sensor lines L1 to Ln, the change in the voltage level of the sensor lines L1 to Ln is observed, and each sensor is detected. Determine the disconnection abnormality of the line.

However, in the fire alarm monitoring system of such a system, when conducting the continuity test of the sensor lines L1 to Ln, the terminators 101 to all the sensor lines L1 to Ln.
・ ・ Because it is necessary to add and connect the terminal, even if it is an unused sensor line, the terminator must be connected and added.
It was troublesome and inefficient. Therefore, in order to eliminate such inconvenience in recent years, a dip switch is provided for each detector line, and unused unused detector lines are registered in advance in the memory of the fire receiver to enable continuity. During the test, it is treated as an empty line, and it is regarded as normal even if a disconnection abnormality occurs in the sensor line.

[0004]

However, in such a system in which an empty line is registered by using a DIP switch, when a fire detector is connected to an empty sensor line and used, There was a problem that the registration with the DIP switch had to be canceled, and if the operation was forgotten, the fire alarm would be ignored.

The present invention has been made in view of the above circumstances, and it is necessary to change the continuity test program or change the dip switch even when an empty sensor line is used. It is a first object of the present invention to provide a convenient sensor line abnormality determination method that can be used without connecting a terminator to an empty line. Also, the second purpose is that even if the sensor line is registered as an empty line,
It is an object of the present invention to provide a fire monitoring method that can be effectively processed as real fire information when the detector line is notified.

A third object is that even if a sensor line is registered as an empty line, if that sensor line is reported, it will be effectively processed as actual fire information before it becomes an empty line. It is to provide a fire monitoring method that can automatically cancel the registration of. A fourth object is to provide an abnormality determination method of the present invention, a fire monitoring method and a fire alarm system using the method.

[0007]

The present invention proposed to achieve the above object has the following constitution.
That is, in claim 1, after registering the sensor line determined to be disconnected by the continuity test of the sensor line executed prior to the monitoring operation as an empty line in the empty line registration memory of the fire receiver, the monitoring operation is performed. At times, the sensor line registered in the memory is judged to be normal, and a continuity test of the sensor line is performed.

According to the second aspect of the present invention, after registering the sensor line judged to be broken by the continuity test of the sensor line executed prior to the monitoring operation as an empty line in the empty line registration memory of the fire receiver. During the monitoring operation, the sensor line registered in the memory is judged to be normal, and the continuity test of the sensor line is executed. It is characterized by processing.

Further, in claim 3, after registering the sensor line judged to be disconnected by the continuity test of the sensor line conducted prior to the monitoring operation as an empty line in the empty line registration memory of the fire receiver. During the monitoring operation, the sensor line registered in the above memory is judged to be normal and the continuity test of the sensor line is executed, while when the sensor line registered in the above memory fires, the fire information It is characterized in that the free line registration with the fire alarm registered in the free line registration memory at this time is deleted.

Further, in claim 4, a fire alarm monitoring system for implementing the fire monitoring method proposed in claim 2 is proposed, and a vacant line registration switch for starting the continuity test of the sensor line is proposed. And a free line registration memory for registering, as a free line, a sensor line that has been determined to be broken by a continuity test executed by operating the free line registration switch.

A final claim 5 proposes a fire alarm monitoring system for carrying out the fire monitoring method proposed in claim 3, and in this system, a fire alarm monitoring system is proposed.
In addition to the configuration of the fire receiver described in, when a fire alarm is received from a sensor line registered with an empty line, the registration of the sensor line registered in the empty line registration memory is automatically deleted. The configuration is further provided with a free line registration automatic erasing means.

[0012]

According to the present invention, the following operation is performed.
According to the abnormality detection method of the detector line described in claim 1, the continuity test is performed prior to the normal monitoring operation for monitoring the alarm of the fire detector connected to the detector line, in which case the disconnection occurs. The sensor line that is judged to be registered is registered as an empty line in the empty line registration memory of the fire receiver. By the way, the continuity test in this case is done after proper contractors and persons involved in the construction have inspected all the detector lines of the fire monitoring system, so the detector lines judged to be disconnected should be terminated. Treated as an empty line that is not connected.

Next, when the normal monitoring operation is started, the fire receiver sequentially supplies the test voltage to all the sensor lines to conduct the continuity test. However, for the sensor lines registered in the empty line registration memory, Even if a disconnection abnormality occurs, the abnormality is not processed because it is determined to be normal. Claim 2
According to the fire monitoring method described in (3), in addition to the continuity test operation of the sensor line, the presence / absence of the alarm of the sensor line is also monitored. Treated as a fire signal. As a result, even if the user cancels the registration cancellation operation of an empty line, it is effective against a real fire and improves the reliability of fire alarm monitoring.

Further, according to the fire monitoring method of the third aspect, the sensor line registered in the idle line registration memory is issued after the sensor line registered in the idle line is reported and processed as an actual fire signal. The line is being erased. In addition, claims 4 and 5
According to the fire alarm monitoring system described in (1), the fire receiver side can easily realize the detector line abnormality determination method described in claim 1 and the fire monitoring method proposed in claims 2 and 3.

[0015]

The present invention will be described below with reference to the accompanying drawings. FIG. 1 shows the basic configuration of the fire alarm monitoring system of the present invention, and FIG. 2 is a block diagram showing the internal configuration of the fire receiver of the present invention. FIG. 1 shows the basic configuration of the fire alarm monitoring system, in which n detector lines L1 to Ln are derived to the fire receiver A, and each detector line L
A plurality of fire detectors S ... Are connected to 1 to Ln. In such a system configuration, the terminator B is connected to the sensor lines L1, Lb, Ln used, but the terminator is not connected to the unused empty line La. In FIG. 2, the fire receiver A is a CP as a control unit.
A continuity test means 1 including a disconnection detection circuit 11 for detecting disconnection by conducting a continuity test of the I / O1 and the sensor line to which the idle line registration switch SW is connected is connected as an interface of the control unit. Equipped with I / O2,
It is provided with a memory M1 for storing a program for fire monitoring operation and continuity test, a memory M2 for storing data required for abnormality determination of a sensor line and fire monitoring. The free line registration memory 2 is composed of RAM and EEPROM,
Register the data of the sensor line that is vacant. A backup power supply is added to the vacant line registration memory 2 in order to prevent data erasure when the power is cut off, and this backup power supply is composed of a backup battery and a capacitor.

With reference to these figures, the method for determining abnormality of the detector line of the present invention will be described. In the present invention, the continuity test of the fire detector S is performed before the fire receiver A performs the monitoring operation. Is done. This continuity test is basically the same as the operation performed during the monitoring operation. That is, test voltages are sequentially applied to the sensor lines L1 to Ln from the continuity test means 1 of the fire receiver A, and the disconnection detection circuit 11 provided therein has a change in impedance of the sensor lines L1 to Ln. It detects whether the test current flows.

In the continuity test, the test voltage supplied from the fire receiver A causes a disconnection in a part of the sensor line (the broken detection line is indicated by Lb, and the disconnection part is indicated by X).
Then, since the current stops flowing in the sensor line Lb,
The control unit judges the change at this time as a disconnection, and judges that it is normal when a current is flowing. In the present invention,
The continuity test, which is performed prior to the normal monitoring operation, is performed after the construction of the detector line to build a fire alarm monitoring system.
Alternatively, since it is supposed to be performed after the maintenance and inspection of the sensor line is performed, the terminator is not connected to the sensor line La that the fire receiver A has determined to be disconnected. Such a sensor line La is regarded as an unused free line,
It is registered as a free line in the free line registration memory 2 of the fire receiver A.

In this way, after registration of the vacant line, the fire receiver A enters a normal monitoring operation. Here, the continuity test is performed on the sensor lines L1 to Ln at regular time intervals, At this time, reference is made to the free line registration memory 2, and the sensor line La registered as an empty line is processed without being considered as a disconnection. Here, not to be regarded as disconnection means that processing for displaying an abnormality such as a trouble indicator light, a district light of a sensor line, and a trouble sound in the fire alarm monitoring system is not performed.

Step 100 to step 105 of FIG.
FIG. 4 shows a basic procedure for registering an empty line in the method for determining an abnormality in a sensor line according to the present invention. In such an abnormality determination method, if it is carried out every time the system scale of the fire alarm monitoring system is changed, an empty line can be automatically registered every time the usage state of the sensor line is changed.
This is more convenient than the conventional method in which a dip switch is used to perform vacant registration for each of the sensor lines.

Steps 200 to 208 in FIG. 4 are flowcharts showing the basic operation procedure when the continuity test is performed during the monitoring operation. The test voltage is sequentially applied to all the sensor lines in the system from the fire alarm receiver A, and the disconnection abnormality of the sensor line is judged. If it is judged that the disconnection is abnormal, the empty line registration memory 2 is referred to. It is further determined whether or not there is a free line, and if there is a free line registration, it is determined to be normal. After determining the abnormality of all the sensor lines in the system in this way, step 208 is performed.
Return to and start the operation test of the sensor line. Step two
08 defines the time interval for executing the continuity test.

According to the fire monitoring method of the present invention as proposed in claim 2, it is temporarily registered in the free line registration memory of the fire receiver as a free line by the continuity test of the sensor line executed prior to the monitoring operation. Even with the sensor line, when a fire alarm is generated during the monitoring operation, it is processed as fire information, which improves the reliability of fire monitoring.

Steps 300 to 306 of FIG. 5 are flowcharts showing the basic procedure at the time of the monitoring operation of the fire monitoring method proposed in claim 2. During the monitoring operation, all the sensor lines in the fire alarm monitoring system are judged to be abnormal, and if any of the sensor lines reports a fire, an error alarm will also be issued to the registered sensor lines. It is generated and an error is displayed. The abnormal alarm and the abnormal display are displayed until the recovery switch of the fire receiver is operated to recover. In this flowchart, an example in which a so-called polling method in which all the sensor lines in the system are sequentially monitored by the fire alarm receiver A to detect a fire alarm is applied is shown. A method may be adopted in which a fire alarm signal from the sensor line that has fired is interrupted by the fire receiver and processed.

In the present invention, the terminator is not originally connected to the sensor line registered as an empty line. Therefore, after connecting a fire detector to an unused detector line to enable it, there may be cases where the registration of an empty detector line has not been updated, so even in this case a fire can be detected reliably. The reliability can be further improved. Note that claim 3
In the fire monitoring method proposed in 1), after a sensor line registered as an empty line issues a fire alarm, that sensor line is deleted from the empty line registration memory. Even if you forget it, you can effectively deal with the fire alarm.

Further, the fire alarm monitoring system proposed in claim 4 has a structure in which the fire receiver side is provided with a free line registration switch SW and a free line registration memory 2, and its basic configuration is as shown in FIG. It is as shown in 1. In such a fire alarm monitoring system, when the idle line registration switch SW is operated, the control unit of the fire receiver A activates the continuity test means 1, and at this time, the continuity test means 1 is led to the fire receiver A. A test voltage is sequentially supplied to the sensor lines L1 to Ln to conduct a continuity test, and the codes of the sensor lines that are determined to be disconnected are sequentially registered in the vacant line registration memory 2. Therefore, the system scale of the fire alarm monitoring system is increased. Every time you change, just operate the idle line registration switch,
It is extremely convenient because it is possible to automatically register a free line. It goes without saying that various types of operation switches such as a push button type, a tilt-down type, and a slide type can be adopted as the vacant line registration switch SW.

Finally, in the fire alarm monitoring system proposed in claim 5, the fire receiver A of the fire alarm monitoring system proposed in claim 4 is provided with automatic registration erasing means (not shown) for an empty line. When the sensor line registered as an empty line is notified, the sensor line registered in the empty line registration memory is automatically erased. In the fire alarm monitoring system with such a configuration, even if you forget to delete the registration of an empty line, effective fire processing can be performed for the sensor line that was reported by the actual fire, and it was once registered in the empty line registration memory. Since the unused line registration can be automatically deleted for the detector line, a more convenient fire monitoring system can be provided for an actual fire.

[0026]

According to the abnormality determination method of the sensor line according to the first aspect of the present invention, an unused sensor which is not connected with a terminator is used in the continuity test performed prior to the normal monitoring operation. Since the instrument line is automatically registered, it is not necessary to connect a terminator to the unused sensor line, and a dip switch is provided for each sensor line to register an empty sensing line. Compared with the method, it is possible to save the trouble of operating the DIP switch and registering an empty line.

According to the fire monitoring method of the second aspect, when a sensor line registered as an empty line is reported, it is treated as an actual fire. Moreover, it can respond appropriately in case of a real fire. According to the fire monitoring method described in claim 3, when the sensor line registered as an empty line is reported, the registration of the empty line is deleted after being processed as an actual fire. Even if you forget to cancel the registration, you can properly respond to the actual fire and free line registration.

Further, according to the fire alarm monitoring system of the fourth aspect, each time the usage state of the sensor line is different,
By simple operation that only operates idle line registration switch,
Free registration of sensor lines can be performed easily. According to the fire alarm monitoring system according to claim 5, the vacant registration of the sensor line is easily performed by a simple operation of operating the vacant line registration switch each time the usage state of the sensor line is different. In addition, when a sensor line that has registered a free line is notified, the free line registration can be automatically deleted.

[Brief description of drawings]

FIG. 1 is a system diagram showing a basic configuration of a fire alarm monitoring system of the present invention.

FIG. 2 is a block diagram showing an internal configuration of a fire receiver according to the present invention.

FIG. 3 is a flow chart showing a basic procedure at the time of registering an idle line in the method for determining an abnormality of a sensor line according to the method of the present invention.

FIG. 4 is a flowchart showing a basic procedure at the time of monitoring operation in the sensor line abnormality determination method of the method of the present invention.

FIG. 5 is a flowchart showing a basic procedure during a monitoring operation of the method of the present invention.

FIG. 6 is a system configuration diagram of a conventional fire alarm monitoring system.

[Explanation of symbols]

 A Fire receiver B Terminator S Fire detector L1, La, Lb, Ln Sensor line 1 Continuity test means 11 Disconnection detection circuit 2 Empty line registration memory

Claims (5)

[Claims] 1. After registering a sensor line, which has been determined to be disconnected by a continuity test of the sensor line executed prior to the monitoring operation, as an empty line in the free line registration memory of the fire receiver, during the monitoring operation, A method for determining an abnormality in a sensor line, comprising determining that the sensor line registered in the empty line registration memory is normal and executing a continuity test of the sensor line. 2. After registering a sensor line, which has been determined to be disconnected by a continuity test of the sensor line executed prior to the monitoring operation, as an empty line in the free line registration memory of the fire receiver, during the monitoring operation, When the sensor line registered in the free line registration memory is judged to be normal and the continuity test of the sensor line is executed, when the sensor line registered in the free line registration memory fires, a fire is detected. A fire monitoring method characterized by processing as information. 3. After registering a sensor line, which has been judged as a disconnection by a continuity test of the sensor line executed prior to the monitoring operation, as an empty line in the empty line registration memory of the fire receiver, during the monitoring operation, When the sensor line registered in the free line registration memory is judged to be normal and the continuity test of the sensor line is executed, when the sensor line registered in the free line registration memory fires, a fire is detected. A fire monitoring method characterized by processing as information and erasing the free line registration for which a fire alarm was registered, which was registered in the free line registration memory at this time. 4. A free line registration switch for starting a continuity test of the sensor line, and a sensor line judged to be disconnected by the continuity test executed by the operation of the free line registration switch is registered as an empty line. A fire alarm monitoring system, characterized in that a free line registration memory and a fire receiver are provided. 5. An idle line registration switch for starting a continuity test of the sensor line, and a sensor line judged to be disconnected by the continuity test executed by the operation of the idle line registration switch is registered as an idle line. Equipped with a free line registration memory and a free line registration automatic erasing means that automatically deletes the registration of the sensor line in the free line registration memory when a sensor line registered as a free line fires. Fire alarm monitoring system characterized by