JP2007293477A - Monitoring equipment for disaster prevention - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the reliability of disaster prevention monitoring by preventing a deletion mistake with a sensor attribute data. <P>SOLUTION: A fault monitoring section 44 of a disaster prevention receiver 10 detects a sensor depart fault when a response signal is not received from a fire sensor to a call signal transmitted periodically, and measures the elapsed time from the time of detecting the sensor depart fault. When the fire detector of which sensor depart fault is detected is specified and a deletion command of the attribute data is received, a deletion processing section 46 deletes the sensor attribute data from a terminal table when the elapsed time from the time of detecting the sensor depart fault is a predetermined time or shorter, or cancels the deletion command of the attribute data to prevent deletion when the elapsed time exceeds the predetermined time. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a disaster prevention monitoring facility for monitoring a fire by connecting a fire detector that responds to an upstream signal to a downstream signal from a receiver or a relay to a transmission line drawn from the receiver or the relay. The present invention relates to a disaster prevention monitoring facility that stores, in a receiver or a repeater, a terminal table in which sensor attribute data used for fire monitoring is registered for each fire detector.

  Conventionally, in this type of disaster prevention monitoring equipment, a fire detector equipped with a transmission control function is connected to the transmission line drawn from the fire detector, and a call signal specifying the detector address is periodically sent from the receiver. To monitor the status of the fire detector.

  The receiver stores a terminal table in which sensor attribute data such as type, block number, and link destination data is registered for each sensor corresponding to the address, and a fire detection signal is received from the fire sensor. At this time, the corresponding sensor attribute data is read from the terminal table, and necessary fire judgment processing and control processing of the district bell, smoke prevention device, etc. are performed based on the sensor attribute data.

  The terminal table of the receiver is created at the manufacturing factory and is stored in the receiver when the equipment is constructed. Also, during the operation of disaster prevention monitoring equipment, for example, by changing the room partition, the fire detector that has already been installed may be removed or a new fire detector may be added. It is possible to delete or add the sensor attribute data from the receiver by operating the receiver.

For example, when the fire sensor is removed, the sensor attribute data is deleted from the terminal table by the following procedure.
(1) Remove the fire detector that is no longer needed due to the partition change.
(2) Since a response signal cannot be obtained for the address of the fire detector that has been removed, a failure to detect the detector is detected by the receiver.
(3) The operation of deleting the sensor is performed for the address of the sensor detachment failure by the screen operation of the receiver.
(4) The receiver deletes the sensor attribute data at the address indicated from the stored terminal table.
(5) The sensor detachment fault is resolved and the normal monitoring state is restored.
JP 2005-4352 A

  However, in such a conventional disaster prevention monitoring equipment, even if the fire detector is removed due to the partition change, the detector failure is detected by the receiver and the sensor attribute data is deleted, Although the fire sensor has not been removed, the sensor attribute data is accidentally deleted from the terminal table, and the fire sensor monitoring area from which the sensor attribute data has been deleted is operated without warning. There's a problem.

  In other words, in addition to removing the fire sensor, if the sensor body has been removed from the sensor base for inspection or prevention of false alarms, if the sensor line is disconnected, or if the fire sensor fails and no response signal is available In addition, when a sensor detachment failure is detected by the receiver and a list of sensor detachment failures is displayed in order to delete the sensor attribute data of the removed fire sensor, the sensor detachment failure may occur due to a reason other than removal. There is also a problem that the address that has been deleted is displayed as a list for deletion, and the attribute data is deleted by erroneously specifying the address of the fire detector that has not been removed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a disaster prevention monitoring facility that prevents accidental deletion of sensor attribute data of an address that causes a sensor detachment failure, thereby improving the reliability of disaster prevention monitoring.

The present invention relates to a disaster prevention monitoring facility for monitoring a fire by connecting a fire sensor that responds to an upstream signal to a downstream signal from a receiver or a relay to a transmission line drawn from the receiver or the relay. ,
To receiver or repeater,
A storage unit for storing a terminal table in which sensor attribute data used for fire monitoring is registered for each fire detector;
A failure monitoring unit that detects a sensor failure when a response signal is not received from a fire sensor in response to a periodically transmitted call signal, and measures an elapsed time from the detection of the sensor failure;
If you specify a fire detector that has detected a sensor failure and receive an instruction to delete sensor attribute data, if the elapsed time from the detection of the sensor failure is less than the specified time, the sensor attribute Deleting the data from the terminal table, and if the predetermined time has been exceeded, a deletion processing unit that invalidates the instruction to delete the sensor attribute data, and
Is provided.

As another aspect of the present invention, disaster prevention monitoring for monitoring a fire by connecting a fire sensor that responds to an upstream signal to a downstream signal from a receiver or a relay to a transmission line drawn from the receiver or the relay In the equipment,
To receiver or repeater,
A storage unit for storing a terminal table in which sensor attribute data used for fire monitoring processing is registered for each fire detector;
A failure monitoring unit that detects a sensor disconnection failure when a response signal is no longer received from the fire sensor in response to a ringing signal that is periodically transmitted;
If a sensor detector failure is detected in maintenance inspection mode when a sensor detector data deletion instruction is received when a fire detector in which a sensor detector failure has been detected is specified, the sensor attribute data is read from the terminal table. A deletion processing unit that deletes and invalidates the instruction to delete the sensor attribute data when detected in the normal monitoring mode;
Is provided.

  Here, when the fire detector to be deleted is specified in the setting state of the construction / maintenance mode, the deletion processing unit sends a warning indicator control command to the designated fire detector and turns on the warning indicator. Turn on or blink.

As another aspect of the present invention, disaster prevention monitoring for monitoring a fire by connecting a fire sensor that responds to an upstream signal to a downstream signal from a receiver or a relay to a transmission line drawn from the receiver or the relay In the equipment,
To receiver or repeater,
A storage unit for storing a terminal table in which sensor attribute data used for fire monitoring processing is registered for each fire detector;
A failure monitoring unit that detects a sensor disconnection failure when a response signal is no longer received from the fire sensor in response to a ringing signal that is periodically transmitted;
When a fire detector in which a sensor detachment failure is detected is specified and an instruction to delete sensor attribute data is received, detection of a sensor detachment failure is detected for the sensor base equipped with the specified fire sensor. When a response is requested and no sensor outage fault detection response is received, the sensor attribute data is deleted from the terminal table, and when a sensor outage fault detection response is received, an instruction to delete the sensor attribute data is received. Delete processing part to invalidate
Is provided.

Here, the receiver or repeater is provided with a detection request circuit that reverses the polarity of the supply voltage to the transmission line and requests the detection response of the sensor connection, and the polarity of the supply voltage of the transmission line is reversed on the sensor base. In this case, a detection response circuit for detecting a connection state of the fire detector and supplying a predetermined detection current to the transmission line is provided.

  In the case of a fire alarm system, when the fire sensor is actually removed and the sensor attribute data is deleted, the fire alarm is removed without taking any time after removing the fire sensor. It is usually impossible to continue. Therefore, in the present invention, when the detector attribute data deletion instruction is received after designating the fire detector in which the sensor disconnection failure is detected, if the predetermined time is exceeded, the sensor attribute data is deleted. By disabling the instruction, it is possible to prevent unwarning of the fire detector from occurring due to a deletion error.

  In addition, when deleting the sensor attribute data of a fire detector that has been removed, change the setting of the receiver from normal monitoring mode to construction / maintenance mode, and work after stopping the district bell ringing and various linkages. According to another aspect of the present invention, when a fire sensor in which a sensor detachment failure is detected is designated and an instruction to delete the sensor attribute data is received, the sensor detachment failure is detected in the normal monitoring mode. In such a case, it is possible to invalidate the instruction to delete the sensor attribute data and prevent the fire sensor from being unwarned due to a deletion error.

In addition, when the fire sensor is removed, the sensor body and the sensor base cannot be removed and the sensor base remains, but the fire sensor is not removed. If a sensor detachment failure is detected, it is possible that only the sensor base remains. Therefore, in another aspect of the present invention, a fire sensor in which a sensor detachment failure is detected. When an instruction to delete sensor attribute data is received with the specified sensor specified, a sensor outage detection response is requested to the sensor base equipped with the specified fire sensor, and a sensor outage fault detection response is requested. Is received, the instruction to delete the sensor attribute data is invalidated, and it is possible to prevent an unwarning of the fire sensor from occurring due to a deletion error.

  FIG. 1 is an explanatory view showing an embodiment of disaster prevention monitoring equipment to which the present invention is applied. In FIG. 1, an analog fire detector 14, a detector repeater 16, a gas leak repeater 22, a district bell 24 having a repeater function, and a repeater function are provided on a transmission line 12 drawn from the disaster prevention receiver 10. A release 26 for a fire door provided with is connected as a terminal device. Note that the district bell 24 and the release 26 are terminals that serve as control devices.

  A sensor line 18 is drawn out from the sensor repeater 16 and is connected to an on / off type fire sensor 20. When the on-off type fire sensor 20 detects a fire, the sensor line 18 from the sensor repeater 16 is short-circuited to cause an alarm current to flow, which is received by the sensor repeater 16 and determined to be a fire.

  The analog fire sensor 14 includes a smoke analog fire sensor that detects smoke and a thermal analog detector that detects heat from the fire, and the analog fire sensor 14 detects an analog corresponding to the smoke concentration detected by the smoke detector. A signal or an analog heat detection signal from the heat sensing unit is sent to the disaster prevention receiver 10 to determine a fire.

  A gas leak detector 23 is connected to the gas leak relay 22, and the gas leak detector 23 uses AC 100 volts as a power source, and normally outputs 6 volts and 12 volts when gas leak is detected. The repeater 22 determines a gas leak.

  The disaster prevention receiver 10 includes a transmission control unit 28, a receiver CPU 30, a storage unit 32, an operation unit 34, a display unit 36, a main acoustic unit 38, and a transfer unit 40.

  The transmission control unit 28 of the disaster prevention receiver 10 collects information on the terminal device by polling by sending a calling signal that sequentially specifies the address of the terminal device. For example, A1 = 1 to 127 is set as the terminal address A in the terminal device, and in the steady monitoring state, a call signal in which the terminal address is sequentially specified is transmitted to call the terminal side, and from the calling terminal, The terminal information detected at that time is transmitted as a response signal.

  Here, the call signal from the disaster prevention receiver 10 is voltage mode signal transmission in which the call signal voltage is superimposed on the power supply voltage for the transmission line 12, and the response signal from the terminal device is current mode signal transmission.

  The receiver CPU 30 is provided with a disaster prevention monitoring unit 42, a failure monitoring unit 44, a deletion processing unit 46, and an additional processing unit 48 as functions realized by executing the program. Further, a terminal table 50 is provided in the storage unit 32, and attribute data is registered for each terminal device.

  The disaster prevention monitoring unit 42 of the receiver CPU 30 determines fire or gas leakage based on information transmitted from each terminal device in response to polling by the transmission control unit 28. Of these, the response signals from the detector repeater 16 and the gas leak repeater 22 directly indicate the presence or absence of a fire or gas leak. Do.

  On the other hand, for the analog fire sensor 14, an analog detection signal indicating the smoke concentration or an analog detection signal indicating the detection temperature is transmitted as a response. Therefore, the analog detection signal is compared with a predetermined threshold value to determine the fire. Do. For the smoke detection analog detection signal, a fire is judged by performing a storage process using a preset storage time.

  For the fire judgment of the analog detection signal from the analog fire detector 14 by the disaster prevention monitoring unit 42, the sensor attribute data 52-1 to 52-n as shown in FIG. Registered for each vessel.

  In the sensor attribute data 52-1 of FIG. 2, an address, type, block number, district name, linkage destination data, sensitivity data, storage time data, message data, and the like are registered in advance. The address is composed of a transmission line to which the analog fire detector is connected and an address assigned on the transmission line. For example, an address “01-001-1” is set.

  Moreover, since the sensor attribute data 52-1 is the analog fire detector 14 provided with the smoke detector, “smoke analog” is registered as the type. In the block number, information for identifying a block in the warning area such as “01 building, 10th floor, 01 district, 01” of the warning area where the analog fire detector is installed is registered.

  The district name is arbitrary information that can identify the location where the sensor is installed, such as “what room and what number room”. The linked data includes the address of the linked bell repeater that rings when a fire is detected. Sensitivity data is an output condition necessary to operate according to each threshold level such as a caution level, a fire level, and an interlocking level.

  In the accumulation time data, when the smoke analog detection signal exceeds the fire level, the continuation time is monitored, and the accumulation processing time for determining the fire is set. In the message data, data displayed on the screen at the time of operation based on threshold levels such as a caution level, a fire level, and an interlocking level is registered.

  Referring to FIG. 1 again, the failure monitoring unit 44 provided in the receiver CPU 30 detects a terminal failure when a response signal is no longer received from the terminal device in response to a call signal periodically transmitted from the transmission control unit 28. Is detected. Among these, for the analog fire detector 14, the failure monitoring unit 44 detects a failure of the detector when a response signal from the analog fire detector 14 is not received for the calling signal.

  In such a disaster prevention monitoring facility of this embodiment, the partition of the room provided in the alert area may be changed during operation of the facility, and the analog fire installed in the alert area in accordance with the change of the partition In some cases, the sensor 14 may be removed, or a new analog fire sensor 14 may be added.

  When adding or deleting the analog fire detector 14 due to such a partition change or the like, if it is desired to add the analog fire detector 14 to the terminal table 50 provided in the storage unit 32 of the disaster prevention receiver 10 The sensor attribute data shown in FIG. 2 corresponding to the added analog fire sensor is additionally registered. On the other hand, when the existing analog fire sensor 14 is removed, the detection corresponding to the removed analog fire sensor 14 is performed. A process of deleting the device attribute data from the terminal table 50 is performed.

  The additional registration or deletion of the sensor attribute data with respect to the terminal table 50 accompanying the addition or deletion of the analog fire sensor 14 is performed by switching the operation mode of the disaster prevention receiver 10 from the normal monitoring mode to the construction / maintenance mode. By switching to, the interlocking operation of the district bell 24 and the release 26 can be prevented.

  The deletion processing unit 46 deletes the sensor attribute data from the terminal table 50 that is performed by switching the disaster prevention receiver 10 to the construction / maintenance mode. Further, additional registration of the sensor attribute data to the terminal table 50 is performed by the addition processing unit 48. The processing by the deletion processing unit 46 and the addition processing unit 48 can be performed in the disaster prevention receiver 10 using an operation screen for the deletion processing or addition processing in the display unit 36 using a liquid crystal display.

  FIG. 3 is a flowchart of additional registration processing of sensor attribute data performed by switching the disaster prevention receiver 10 of FIG. 1 to the construction / maintenance mode. In FIG. 3, a menu screen for adding or deleting the terminal table 50 is displayed on the liquid crystal display of the display unit 36 in step S1.

  For example, the add / delete menu screen 54 of FIG. 5 is displayed as this menu screen. The addition / deletion menu screen 54 is provided with a terminal addition operation button 56, a terminal deletion operation button 58, and an addition / deletion list operation button 60 as operation buttons related to the operation of the terminal table.

  In the process of FIG. 3, the selection operation of the operation button on the add / delete menu screen 54 of FIG. 5 is discriminated and the corresponding process is performed. That is, when terminal addition is selected in step S2, the process proceeds to step 3 to execute a sensor addition process. If it is determined in step S4 that the terminal is to be deleted, the process proceeds to step S5, where sensor deletion processing is executed.

  Further, when the selection of the addition / deletion list display is determined in step S6, the addition / deletion list display is performed in step S7. Such processes of steps S2 to S7 are repeated until a menu ending operation is performed in step S8.

  FIG. 4 is a flowchart showing details of the sensor deletion process in step S5 of FIG. 3, and shows the sensor deletion process as the first embodiment of the present invention for preventing a sensor attribute data deletion error.

  The deletion of the corresponding sensor attribute data from the terminal table 50 when the analog fire sensor 14 is removed due to a partition change or the like is performed in the disaster prevention receiver 10 of FIG. 1 detected with the removal of the analog fire sensor 14. This is performed based on the sensor address at which the failure monitoring unit 44 caused a sensor detachment failure.

  However, the failure of the detector in the failure monitoring unit 44 is not only due to the removal of the analog fire detector 14 due to the partition change etc., but also the sensor base and detection function to which the analog fire detector 14 connects the transmission line 12. The sensor body can be detached from the sensor base as needed, and responds to the calling signal from the transmission line 12 even when the sensor body is detached from the sensor base. Since the signal cannot be obtained, the failure monitoring unit 44 detects a failure of the sensor.

  In addition, even when the transmission line 12 is disconnected, the failure monitoring unit 44 causes a failure of the detector because the response signal from the analog fire sensor 14 connected after the disconnection point cannot be obtained. Furthermore, even when an abnormality such as a failure occurs in the analog fire sensor 14 itself, a failure in detecting the sensor is caused by not receiving a response signal to the call signal.

  When the disaster prevention receiver 10 is switched to the construction / maintenance mode and the sensor attribute data of the analog fire sensor removed by changing the partition is deleted from the terminal table 50, the fault monitoring unit 44 at that time detects the sensor attribute data. All addresses for which a failure has been detected are listed as deletion targets.

  In this way, in order to prevent the sensor attribute data deletion error that accompanies the display of the sensor disconnection failure of the sensor other than the removed analog fire sensor as the deletion target, from the time of detecting the sensor disconnection failure. The elapsed time is measured.

  That is, when the sensor attribute data is deleted from the terminal table 50, it is usually performed without taking much time after removing the analog fire sensor 14, and the failure of the sensor continues for a long time. It is usually impossible to do. Therefore, in the first embodiment, when the failure monitoring unit 44 in FIG. 1 detects no response failure when the response signal is not received from the analog fire sensor 14, and when the failure detection failure is detected. The elapsed time from is measured.

  Then, when the deletion processing unit 46 receives the instruction to delete the sensor attribute data by designating the address of the analog fire sensor in which the sensor disconnection failure is detected, the elapsed time from the detection of the sensor disconnection failure Is less than a predetermined time, for example, 24 hours, the sensor attribute data is deleted from the terminal table 50, and if it exceeds 24 hours, it is determined that the analog fire sensor has not been removed, and the sensor attribute data Invalidates data deletion instructions and prohibits deletion processing.

  The sensor deletion process according to the first embodiment will be described with reference to FIG. First, in step S1, a list of sensor addresses that can be deleted is displayed. In this list of sensor addresses, a list of sensor addresses that have been detected so far as sensor detachment faults are displayed as sensor addresses that can be deleted.

  FIG. 6 is an explanatory diagram of the address list screen 62 displayed when the terminal deletion operation button 58 is operated on the add / delete menu screen 54 of FIG. The address list screen 62 displays address information 64 of an analog fire sensor that causes a sensor disconnection failure detected by removing the analog fire sensor 14 due to the partition change.

  Subsequently, the process proceeds to step S2 in FIG. 4, and when an address selection operation is determined for the address list screen 62 in FIG. 6, the process proceeds to step S3, and a deletion data confirmation screen 70 as shown in FIG. 7 is displayed. If the deletion target is confirmed on the deletion data confirmation screen 70, the deletion execution instruction is determined in step S4 by operating the deletion execution button 71, and the process proceeds to step S5.

  In step S5, for the sensor at the address to be deleted, the elapsed time from the occurrence of the sensor failure is read, and in step S6, it is determined whether or not the elapsed time is within 24 hours. If it is within 24 hours, it is determined that the sensor attribute data is deleted when the sensor is removed, and the sensor attribute data at the address selected from the terminal table 50 is deleted in step S7.

  On the other hand, if the elapsed time from the failure detection in step S6 exceeds 24 hours, it is determined that the sensor attribute data is not deleted due to the removal of the fire sensor, and the sensor attribute data is determined in step S8. Disable deletion from the terminal table.

  Here, when the sensor attribute data of the target address is deleted from the terminal table in step S7, the screen is switched to the deletion completion screen 72 of FIG. Such processes of steps S2 to S8 are repeated until the menu is ended in step S9 and the process returns to the main routine of FIG.

  Note that when the terminal deletion button 58 in FIG. 5 is operated, a sensor that has already passed the predetermined 24 hours may not be displayed in the list in FIG.

  FIG. 9 is a flowchart showing details of the sensor deletion process according to the second embodiment of the present invention. Normally, when deleting the sensor attribute data, the disaster prevention receiver 10 is changed from the normal monitoring mode to the construction / maintenance mode, and the deletion operation is performed after stopping the district bell ringing and various linkages. Therefore, in the sensor deletion process according to the second embodiment, only the address that has become a sensor detachment fault in the state where the disaster prevention receiver 10 is in the construction / maintenance mode is set as the deletion target of the sensor attribute data, and the normal monitoring mode Deletion of sensor attribute data is invalid for addresses that have failed in the sensor state.

  In the second embodiment, the address of the analog fire detector 14 to be removed from the transmission line 12 is set in the receiver while the disaster prevention receiver 10 is in the construction / maintenance mode, and the analog fire to be removed is set. An alarm indicator control signal for instructing to turn on or blink the alarm indicator lamp is sent from the disaster prevention receiver 10 to the detector, and thereby the alarm indicator lamp of the analog fire detector 14 to be removed at the site is sent. By lighting or blinking, it is possible to remove the analog fire detector 14 that has been definitely deleted.

  That is, in order to realize the second embodiment of the present invention, the fault monitoring unit 44 provided in the receiver CPU 30 of the disaster prevention receiver 10 of FIG. 1 responds to the calling signal periodically transmitted from the analog fire sensor 14. Detect sensor failure when no signal is received.

  Further, when the deletion processing unit 46 designates the address of the analog fire sensor 14 in which the sensor detachment failure is detected and receives an instruction to delete the sensor attribute data, the sensor detachment failure is detected in the construction / maintenance mode. If so, it is determined that the instruction is to be deleted when the analog fire sensor 14 is removed, and the sensor attribute data is deleted from the terminal table 50. On the other hand, if a sensor detachment failure is detected in the normal monitoring mode, an error occurs. The deletion of the sensor attribute data from the terminal table 50 is invalidated.

  Furthermore, when the address of the analog fire sensor 14 to be deleted is specified in the construction / maintenance mode setting state, the deletion processing unit 46 in the second embodiment displays a notification on the analog fire sensor 14 of the specified address. By sending a lamp control signal and turning on or blinking the alarm indicator lamp, the analog fire detector 14 to be removed at the site can be identified easily and reliably, and the actual analog fire detector can be removed. It can be done without error.

  In the sensor deletion process according to the second embodiment of FIG. 9, first, a list of sensor addresses that can be deleted in step S1, that is, a sensor address that has detected a sensor detachment failure is displayed as an address list screen 62 as shown in FIG. When the address selection to be deleted is determined in step S2, the deletion data confirmation screen 70 as shown in FIG. 7 is displayed in step S3.

  Subsequently, when the deletion execution instruction is determined in step S4, the process proceeds to step S5, the operation mode when the sensor disconnection failure is detected is read, and if the sensor disconnection failure occurs in the construction / maintenance mode in step S6. In step S7, the sensor terminal data is deleted from the terminal table 50.

  On the other hand, if it is detected in step S6 that the sensor is out of order in the normal monitoring mode, the process proceeds to step S8 to invalidate the deletion of the sensor attribute data. The processes in steps S2 to S8 are repeated until the end of the menu is determined in step S9 and the process returns to the main routine of FIG.

  FIG. 10 is a flowchart showing details of the sensor deletion process according to the third embodiment of the present invention. In the fire alarm facility, the analog fire detector is removed due to the partition change, etc., when the detector main body and the detector base are removed from the transmission path 12 and the sensor base is left connected to the transmission path 12. Is not possible.

  However, the failure of the detector in a state other than the removal of the analog fire detector, for example, may have been removed from the sensor base to prevent non-fire reports, in which case Only the device base is left connected to the transmission line 12.

  Therefore, in the sensor deletion process of the third embodiment, a detection request circuit for requesting a detection response of a sensor detachment failure to the sensor base is provided on the disaster prevention receiver 10 side, while the disaster prevention side is provided on the sensor base side. A detection response circuit is provided for detecting and responding to a sensor disconnection failure in a state where the sensor main body is removed in response to a request signal from the receiver.

  FIG. 11 is a circuit diagram of the detection request circuit on the disaster prevention receiver 10 side and the detection response circuit on the sensor base side in the third embodiment. In FIG. 11, the analog fire sensor 14 includes a sensor body 14 a and a sensor base 15, and the sensor base 15 is fixed to a ceiling surface or the like, and a transmission path 12 is connected thereto.

  The sensor main body 14 a is detachably attached to the sensor base 15. The sensor base 15 is provided with a detection response circuit that detects and responds that the sensor body 14a has been removed. This detection response circuit includes transistors Q1 and Q2, diodes D1 and D2, and resistors R1 to R4.

  On the other hand, as the detection request circuit on the disaster prevention receiver 10 side, a reversing circuit for inverting the voltage polarity with respect to the transmission line 12 using the switching relay contact 76 by the relay 74 is provided. That is, the relay 74 switches the switching relay contact 76 provided corresponding to each of the L-side transmission path 12 and the C-side transmission path 12 to the a-side in a non-operating state, plus on the L-side and minus on the C-side. Is supplied to the transmission line 12.

  When the voltage base state of the transmission line 12 at the normal time is requested to the detector base 15 of the analog fire detector 14 to detect the disconnection of the detector main body 14a, the relay 74 is set by an instruction from the receiver CPU 30. In operation, the switching relay contact 76 is switched from the a side to the b side, the L side is switched from positive to negative, and the C side is switched from negative to positive.

  When the switching relay contact 76 is set to the b side by the relay 74, the C side of the transmission line 12 is set to the positive side, and the L side is set to the negative side. When the sensor body 14a is connected to the sensor base 15 of the analog fire sensor 14. For example, when the applied voltage is 20 volts, a current consumption of about 40 microamperes flows from the positive transmission line 12 on the C side through the resistor R1 and the diode D2 of the sensor base 15 to the sensor body 14a. As a result, the base current also flows from the transistor Q1, and the transistor Q1 is turned on.

  When the transistor Q1 is turned on, the emitter and base of the transistor Q2 are short-circuited, the transistor Q2 is turned off, and only the consumption current of the sensor body 14a flows between the transmission lines 12.

  On the other hand, when the sensor body 14a is removed with the voltage polarity of the transmission line 12 reversed, the transistor Q1 is turned off, so that the base current flows out from the transistor Q2 and turns on. A predetermined response detection current that is determined is passed through the transmission line 12 and detected on the receiver CPU 30 side, so that it can be detected that the sensor main body 14a has been removed from the sensor base 15.

  The sensor deletion process according to the third embodiment will be described with reference to FIG. First, at step S1, a list of sensor addresses that can be deleted is displayed as shown in FIG. 6, and when an address selection to be deleted is determined at step S2, a deletion data confirmation screen 70 as shown in FIG. 7 is displayed at step S3. Thereafter, when an instruction to execute deletion is determined in step S4, a sensor detachment failure detection process for the sensor base is executed in step S5.

  That is, in the disaster prevention receiver 10 of FIG. 11, the receiver CPU 30 operates the relay 74 to switch the switching relay contact 76 from the a side to the b side so that the voltage polarity supplied to the transmission line 12 is reversed. At this time, if the sensor main body 14a is removed, the sensor base 15 causes a predetermined response detection current to flow through the transmission line 12 by turning on the transistor Q2, and the receiver CPU 30 receives it as a sensor connection detection signal. Is done.

  Therefore, in step S6 of FIG. 10, it is determined whether or not a sensor connection detection signal has been received from the sensor base. If it has not been received, the address of the sensor detachment fault to be deleted is an analog fire associated with a partition change or the like. Since this is accompanied by removal of the sensor, the process proceeds to step S7, and the sensor attribute data of the designated address is deleted from the terminal table 50.

  On the other hand, when the sensor connection detection signal is received in step S6, the sensor main body 14a is removed while the sensor base 15 remains in the transmission path 12, and in this case, the sensor attribute data Since the deletion is a mistake, the process proceeds to step S8, where the deletion process of the sensor attribute data is invalidated and the deletion is prohibited.

  Such processes of steps S2 to S8 are repeated until the process returns to the main routine of FIG.

  Confirmation of the presence of the sensor base by reversal of the voltage polarity may be performed immediately when a transmission failure of the sensor occurs, not only when the terminal is deleted.

  In the above embodiment, an analog fire sensor is taken as an example of a fire sensor. However, an appropriate fire sensor is included as long as it is a fire sensor having a transmission function with an address specified.

  In addition, the above embodiment is an example in which a fire sensor is connected to the transmission line drawn from the receiver, but the case where the fire sensor is connected to the transmission line drawn from the repeater is also taken as an example. The same applies.

The present invention is not limited to the above-described embodiments, includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above-described embodiments.

Explanatory drawing which showed embodiment of the disaster prevention monitoring equipment by this invention Explanatory drawing of sensor attribute data registered in the terminal table of the receiver Flow chart of terminal table addition / deletion processing The flowchart which showed the detail of the sensor deletion process by 1st Embodiment of this invention. Illustration of the menu screen for adding / deleting terminals Explanatory drawing of address list screen when terminal deletion is selected in FIG. Explanatory drawing of the deletion confirmation screen when the address to be deleted is selected in FIG. Explanatory drawing of the deletion completion screen when delete execution is operated in FIG. The flowchart which showed the detail of the sensor deletion process by 2nd Embodiment of this invention. The flowchart which showed the detail of the sensor deletion process by 3rd Embodiment of this invention. 10 is a circuit diagram of a detection request circuit of a receiver and a sensor-based request response circuit in the embodiment of FIG.

Explanation of symbols

10: Disaster prevention receiver 12: Transmission path 14: Analog fire detector 15: Detector base 16: Detector repeater 18: Sensor line 20: On-off type fire detector 22: Gas leak repeater 23: Gas leak detector 24: Bell 26: Release 28: Transmission control unit 30: Receiver CPU
32: storage unit 34: operation unit 36: display unit 38: main sound unit 40: transfer unit 42: disaster prevention monitoring unit 44: failure monitoring unit 46: deletion processing unit 48: additional processing unit 50: terminal table 52-1 52-n: Sensor attribute data 54: Add / delete menu screen 62: Delete address list screen 70: Delete data confirmation screen 71: Delete execution button 72: Delete complete screen 74: Relay 76: Switch relay contact

Claims (5)

In a disaster prevention monitoring facility for monitoring a fire by connecting a fire sensor that responds to an upstream signal to a downstream signal from the receiver or the relay to a transmission line drawn from a receiver or a relay;
In the receiver or repeater,
A storage unit for storing a terminal table in which sensor attribute data used for fire monitoring is registered for each fire detector;
A failure monitoring unit that detects a sensor failure when a response signal is no longer received from the fire sensor in response to a periodically transmitted paging signal and that measures an elapsed time from the detection of the sensor failure. When,
When the fire sensor in which the sensor detachment failure is detected is specified and an instruction to delete the sensor attribute data is received, if the elapsed time from the detection of the sensor detachment failure is less than a predetermined time, Deleting the sensor attribute data from the terminal table, and if a predetermined time has been exceeded, a deletion processing unit that invalidates the deletion instruction of the sensor attribute data,
Disaster prevention monitoring equipment characterized by the establishment of
In a disaster prevention monitoring facility for monitoring a fire by connecting a fire sensor that responds to an upstream signal to a downstream signal from the receiver or the relay to a transmission line drawn from a receiver or a relay;
In the receiver,
A storage unit for storing a terminal table in which sensor attribute data used for fire monitoring processing is registered for each fire detector;
A failure monitoring unit for detecting a sensor disconnection failure when a response signal is no longer received from the fire sensor in response to a ringing signal transmitted periodically;
When the fire sensor in which the sensor detachment failure is detected is designated and the sensor attribute data deletion instruction is received, if the sensor detachment failure is detected in the maintenance inspection mode, the sensor attribute data is stored. A deletion processing unit for deleting from the terminal table and invalidating the deletion instruction of the sensor attribute data when detected in the normal monitoring mode;
Disaster prevention monitoring equipment characterized by the establishment of
2. The disaster prevention monitoring facility according to claim 1, wherein the deletion processing unit designates a fire detector to be deleted in a setting state of the construction / maintenance mode, transmits a warning indicator control command, and displays a warning. Disaster prevention monitoring equipment characterized by lighting or blinking lights.

In a disaster prevention monitoring facility for monitoring a fire by connecting a fire sensor that responds to an upstream signal to a downstream signal from the receiver or the relay to a transmission line drawn from a receiver or a relay;
In the receiver,
A storage unit for storing a terminal table in which sensor attribute data used for fire monitoring processing is registered for each fire detector;
A failure monitoring unit for detecting a sensor disconnection failure when a response signal is no longer received from the fire sensor in response to a ringing signal transmitted periodically;
When a fire detector in which the sensor detachment failure is detected is specified and an instruction to delete the sensor attribute data is received, a sensor detachment failure is detected with respect to the sensor base equipped with the designated fire sensor. When a detection response is requested, and the detection response of the sensor detachment failure is not received, the sensor attribute data is deleted from the terminal table, and when the detection response of the sensor detachment failure is received, the sensor A deletion processing unit for invalidating the attribute data deletion instruction;
Disaster prevention monitoring equipment characterized by the establishment of
In the disaster prevention monitoring facility according to claim 4,
The receiver or repeater is provided with a detection request circuit that reverses the polarity of the supply voltage to the transmission line and requests a detection response of the sensor connection,
The sensor base is provided with a detection response circuit for detecting a connection state of a fire detector and flowing a predetermined detection current through the transmission line when the polarity of the supply voltage of the transmission line is reversed. Disaster prevention monitoring equipment.

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