JP2007265353A - Fire alarm system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To add information for acquiring the installation place or the like of a fire sensor, to a sensor connection data table so as to be displayed, and to easily update the table by determining the addition of a fire sensor as a kind of trouble to acquire attribute data of the fire sensor. <P>SOLUTION: A receiver 10 stores the sensor connection data table 120 registering attribute data including assignment addresses, types and arbitrary numbers of each sensor circuit. A fire monitoring part 94 reads the arbitrary number corresponding to the assigned address of the fire sensor issuing an alarm, from the sensor connection data table 120 and displays it on a screen when a fire alarm is set off. The relay discriminates abnormality from up-signal reception from an unassigned address and notifies the receiver 10 of the effect. The receiver 10 requests the relay to acquire a type in determining sensor addition trouble, and writes the type of the added sensor acquired by the relay in the sensor connection data table 120 to update it. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention includes a command by connecting a repeater to a transmission line drawn from a receiver, connecting a plurality of fire detectors to a sensor line drawn from the repeater, and changing the voltage from the repeater. The present invention relates to a fire alarm facility that transmits a downstream signal and transmits an upstream signal including a response by changing a current from a fire detector.

  Conventionally, in a fire alarm facility in which a P-type addressable fire sensor is connected to a sensor line from a repeater, command transmission and sensor response to the fire sensor are processed by a pulse count transmission method.

  In the pulse count transmission method, the repeater transmits a downstream signal including a command and a response pulse from the repeater to the fire detector based on the transmission synchronization command from the receiver, and relays it from the fire detector. A fire response is monitored by transmitting an upstream signal of a command response to the device with a current change at an idle timing of a response pulse.

  The address of the fire detector can be set up to the maximum address determined by the number of response pulses, and the response signal corresponding to the command at that time is relayed at the timing when the response pulse is counted and matches the self address. As an upstream signal. The repeater counts the response pulses, and recognizes the sensor address from the counter value when the upstream signal of the command response is received from the fire sensor.

  In such a fire alarm system, fire detector data is required to perform fire monitoring control with the receiver, and the assigned address, type of smoke or heat, block number, contact information, linkage destination, message Sensor connection data such as are prepared for each fire detector at the manufacturing stage, stored in a non-volatile memory such as EEPROM and set in the receiver, and when the power is turned on when the receiver is turned on, the non-volatile memory and RAM etc. The sensor connection data necessary for fire monitoring is obtained by reading the data into a volatile memory and developing it.

Also, with conventional fire receivers, when a sensor abnormality such as an output abnormality occurs in the fire sensor connected to the sensor line from the repeater, text information indicating the occurrence of abnormality on the operation display section of the receiver. It is known that the address number of the repeater is displayed in the vicinity of and the address number of the fire detector is displayed as a branch number so that the location where the abnormality occurs can be identified.
JP-A-2005-004352 JP 2004-280575 A

  However, in such a conventional fire alarm equipment receiver, when displaying the operation of a fire detector or displaying a fault, the detector address is displayed as a branch number in the repeater address. Such an address is effective as an ID for identifying an abnormal fire detector, but the address itself does not indicate the situation of the site such as the installation location of the fire detector that has activated or failed. In addition, it is necessary to manually check and confirm the address and sensor location map or list prepared separately, and it takes time and effort to identify the location of the fire detector that has been activated or obstructed. There is such a problem.

  In addition, with this type of fire alarm system, during the operation after the fire alarm system has been installed, the tenant of the installed building or facility may change and floor partitions may be changed. A new fire detector may be added.

  However, when adding a fire detector, it is necessary to change the sensor connection data registered in the receiver. Remove the EEPROM set in the receiver and bring it back to the factory for rewriting. Changing the sensor connection data using an application, there is a problem that it takes time and effort.

  In order to solve this problem, some receiver connection data can be changed by the receiver itself (Patent Document 1). However, the sensor connection data can be changed by connecting data stored in a nonvolatile memory such as an EEPROM. Therefore, it is necessary to change the receiver from the normal monitoring mode to the maintenance mode for maintenance inspection. There is a problem.

  In addition, in order to be able to rewrite the connection data, it is necessary to provide the MPU with a rewrite function of the EEPROM non-volatile memory and an application for changing the connection data, which complicates the functional configuration of the receiver and increases costs. is there.

The present invention makes it possible to display the attribute data registered in the sensor connection data table by adding information capable of grasping the installation location of the fire sensor and determining that the addition of the fire sensor is a kind of failure. It is an object of the present invention to provide a fire alarm facility that can easily update a detector connection data table by acquiring attribute data of a fire detector.

The present invention connects a repeater to the transmission line drawn from the receiver, connects a plurality of fire detectors to the sensor line drawn from the repeater, and changes the voltage from the repeater to change the command. In the fire alarm equipment that transmits the downstream signal including the response pulse and transmits the upstream signal by changing the current at the idle timing of the response pulse from the fire detector, to the receiver,
A table storage unit for storing a sensor connection data table in which attribute data including an allocation address, a type, and an arbitrary number for each sensor line are registered for each fire detector;
A fire monitoring unit that reads out the arbitrary number corresponding to the assigned address of the fire detector that has been notified from the sensor connection data table and displays the screen when a fire is triggered,
Is provided.

The fire alarm system of the present invention is
In addition to the receiver,
A failure determination unit that determines a sensor additional failure based on an abnormality of the sensor address notified from the repeater;
An arbitrary number acquisition unit that is activated when an additional sensor failure is determined, and requests and acquires an arbitrary number corresponding to the address of the additional sensor;
A data update unit that writes and updates the arbitrary number acquired by the arbitrary number acquisition unit to the attribute data of the fire detector determined to be an additional failure in the sensor connection data table;
Provided,
In the repeater,
An address storage unit for storing an address table storing an assigned address for each sensor obtained from the sensor connection table of the receiver;
An address that notifies the receiver of an address error by determining the reception of an upstream signal from an unassigned address by referring to the address table when an upstream signal of a normal monitoring response is received from a fire detector in response to the transmission of a normal monitoring command An abnormality determination unit;
Is provided.

The fire alarm system of the present invention further transmits a type request command to the repeater when determining a detector additional failure, and requests a type transfer when a completion response is received from the repeater. Providing a type acquisition unit for acquiring the sensor type, and the data update unit writes and updates the type acquired by the type acquisition unit in the connection data of the sensor determined to be an additional failure in the sensor connection data table,
When the type request command from the receiver is further received by the repeater, the type search command is transmitted to the sensor line, and the type is acquired from the response upstream signal of each fire detector and held. And a type search unit for transferring the held type to the receiver when the type transfer request is received from the receiver.

  The notification display unit of the receiver displays, on a screen, the number of fire detectors on the same sensor line adjacent to an arbitrary number of the fire detector that issued the alarm. The notification display unit arranges a shift switch adjacent to the number of notifications of the fire detector, and switches and displays an arbitrary number of the fire detector that is currently reporting each time the shift switch is operated.

The table storage unit of the receiver registers in the district message indicating the type and location of the repeater in the sensor connection data table,
The notification display unit reads out the district message corresponding to the fire detector that has issued the alarm from the sensor connection table and displays it on the screen together with the arbitrary number at the time of fire notification.

The display unit arranges the touch switch corresponding to the display part of the district message, and switches the district message to the display of the district number including the sensor assigned address when the touch switch is operated.
Write and update the additional sensor's assigned address, type, and arbitrary number.

  According to the present invention, a registration area of an arbitrary number is newly provided as fire detector attribute data to be registered in the sensor connection data table, such as a room number indicating the installation location of the fire detector by operating the screen of the receiver, etc. By registering an arbitrary number, when a fire alarm is displayed, an arbitrary number indicating the room number, etc., is displayed corresponding to the repeater address or sensor address, and the location of the fire detector that is triggered from the arbitrary number is displayed. Recognize on-site conditions quickly and take appropriate fire-fighting measures.

  In addition, when a fire detector is added due to partition change, etc., the address error is recognized by the repeater from the response by the unallocated address by the added fire detector, the receiver is notified, and the receiver is recognized by the receiver. This will automatically update the table to automatically register the added fire sensor data in the sensor connection table, and the effort and time required to change the sensor connection data table when a fire sensor is added. To reduce costs associated with the change.

  In this case as well, an arbitrary number input request is made for the added fire sensor in response to the additional sensor failure, and the attribute of the added fire sensor is entered by entering the room number in response to this input request. The sensor connection data table can be updated by easily including an arbitrary number in the data.

  In addition, the number of sensor alarms on the same sensor line is displayed near the arbitrary number, and the arbitrary number of the alarm detector can be switched and displayed by operating the shift switch near it. Can easily grasp the situation.

If necessary, you can switch to the display with the detector address added to the district number including the repeater address by touch switch operation on the display area of the repeater's district message. It is easy to identify.

  FIG. 1 is a block diagram showing a configuration of a fire alarm facility according to the present embodiment. In FIG. 1, a plurality of repeaters 12 are connected to a transmission line 18 and a repeater control line 19 drawn from the receiver 10, and a sensor line 20 is drawn from the repeater 12 to each of a plurality of fires. Sensors 14-1 to 14-n are connected. FIG. 1 shows a case where one sensor line 20 is drawn from the repeater 12 for the sake of simplicity, but in the present embodiment, for example, a case where four lines are drawn. Take an example.

  FIG. 2 is a block diagram showing an embodiment of the receiver 10 in FIG. In FIG. 2, the receiver 10 is provided with a receiver CPU 100. For the receiver CPU 100, a transmission circuit 102, a power supply unit 104, a display unit 106 using a liquid crystal display with a touch panel, an operation unit 108, an acoustic alarm unit. 110, a transfer unit 112, an EEPROM 114 as a non-volatile memory, and a RAM 116 as a volatile memory.

  Further, the receiver CPU 100 is provided with a fire monitoring unit 94, a failure determination unit 95, an arbitrary number acquisition unit 96, a type acquisition unit 97, and a data update unit 98 as functions realized by program control. The fire monitoring unit 94 sends a transmission synchronization command to the repeater 12 of FIG. 1 through the transmission line 18 in accordance with an instruction to the transmission circuit 102 at a predetermined time interval, for example, 9 seconds, and a predetermined number of times between the transmission synchronization commands. A polling command is being sent.

  When the fire monitoring unit 94 receives a fire interrupt signal from the repeater, a fire alarm is displayed using the display unit 106, an acoustic alarm is output from the acoustic alarm unit 110, and from the transfer unit 112 as necessary. A transfer signal is output, and smoke control doors and alarm bells as interlocking devices are controlled. The operation unit 108 includes an operation screen with a touch panel of a liquid crystal display used for the display unit 106, and other switches necessary for appropriate fire monitoring.

  The fire monitoring unit 94 manages sensor connection data (attribute data) of the fire detector connected to the sensor line via the repeater. In the present embodiment, the default connection data table 118 of the fire detector is stored in the EEPROM 114 which is a non-volatile memory. 118 is read out by the receiver CPU 100, developed as a sensor connection data table 120 in the RAM 116, and used as data necessary for fire monitoring by the fire monitoring unit 94.

  FIG. 3 is an explanatory diagram of the sensor connection data table 120 developed in the RAM 116 of the receiver 10 of FIG. In FIG. 3, the sensor connection data table 120 includes a repeater address, a repeater type, a line number, a block number, a district message, linkage source data, a sensor address, an address valid flag, and a type. In that case, an arbitrary number is newly added.

  In this embodiment, since four detector lines are drawn from the repeater, FIG. 3 shows two of them, and each line has 32 fire detectors. The sensor addresses 1 to 32 are stored separately.

  In the address valid flag, bit 1 indicates address allocation, and bit 0 indicates address unallocation. That is, an address whose address valid flag is bit 0 indicates that the fire sensor corresponding to the sensor line is in an empty state in which it is not connected.

  The next type is either heat or smoke in the present embodiment. Furthermore, in the arbitrary number newly provided in the present embodiment, for example, numbers such as room numbers and message information such as tenant names are registered as information indicating the installation location of the fire detector.

  Here, the default connection data table 118 of FIG. 2 is created in advance at the installation stage, and the type and arbitrary number are expanded in the RAM 116 of the receiver 10 as the sensor connection data table 120 as shown in FIG. It is additionally registered. Note that the default connection data table 118 may be created by site registration.

  Among these, the type is automatically acquired and registered by the type request for the repeater from the receiver 10 as will be clarified in the following description. As for the arbitrary number, an appropriate arbitrary number such as a room number or a tenant name can be set and registered by an input operation in the on-site installation state of the receiver 10 using the display with a touch panel of the receiver 10.

  Referring to FIG. 2 again, the failure determination unit 95 of the receiver CPU 10 determines a sensor addition failure based on the abnormality of the sensor address notified from the repeater. The arbitrary number acquisition unit 96 is activated when an additional sensor failure is determined, and requests and acquires an arbitrary number corresponding to the address of the additional sensor.

  The type acquisition unit 97 transmits a type request command to the repeater when a sensor addition failure is determined, and requests a transfer of the type when a completion response is received from the repeater to acquire the sensor type. The data update unit 98 writes the arbitrary number acquired by the arbitrary number acquisition unit 96 and the type acquired by the type acquisition unit 97 in the sensor data portion determined as an additional failure in the sensor connection data table 120 of the RAM 116. Update with. The update of the arbitrary number and type is simultaneously performed on the default sensor connection data table 118 of the EEPROM 114.

  FIG. 4 is an explanatory diagram of a fire alarm screen of the receiver 10 in the present embodiment. 4 is a display screen using a liquid crystal display with a touch panel, and a fire mark 124 is displayed as a fire message 122 at the top of the screen. A detail display unit 125 is provided below the district message 126 on the left side of the detail display unit 125.

The district message 126 is obtained from the sensor connection data table 120 of FIG. 2. In the present embodiment, (1) the number of buildings, the floor, and the district display (2) the district display (PA sensor repeater 010021) ) Is displayed.

  On the right side of the detail display section 125, an arbitrary number 128 is displayed as [1201]. In this example, the arbitrary number 128 represents the number 01 room on the 12th floor as a number. On the right side of the arbitrary number 128, the number of reports 130 is displayed in proximity. The number of notifications 130 is “1/5” in this example, which means that five of the fire detectors connected to the same sensor line are notified, and an arbitrary number 128 is assigned for the first report. “1201” is displayed.

  A shift switch 132 is provided above the number of notifications 130. When the shift switch 132 is operated with a fingertip, the display of the number of notifications 130 changes from “1/5” to “2/5” “ "3/5", "4/5", and "5/5" are sequentially switched, and further pressing returns to the first "1/5". Along with the change in the number 130 of notifications accompanying the shift switch 132, the display at the arbitrary number 128 is also switched in conjunction with, for example, “1202”, “1203”,.

  Further, in the present embodiment, the district message 126 portion is a touch switch, and when the district message 126 portion touch switch is operated, the screen is switched to the fire alarm screen of FIG.

  In the fire alert screen of FIG. 5, the lower part of the district message 126 in the detail display part 125 is switched to the address display part 134. The display of the address display unit 134 is, for example, “PA detector repeater 01-002-1 # 01”, the first half “01-002-1” is the repeater address, and then the sensor address “# 01”. "Is added as a branch number.

  In the fire alarm screen of FIG. 5 as well, if the shift switch 132 on the right side of the detail display unit 125 is operated, the arbitrary number 128 and the number of alarms 130 change in the same manner as in FIG. The sensor address “# 01” is switched to “# 02”, “# 03”,.

  FIG. 6 is a block diagram showing an embodiment of the repeater in the present embodiment. In FIG. 6, the repeater 12 includes a transmission circuit 22, a repeater CPU 24, a power supply unit 25, a current detection circuit 26, a transmission circuit 27, a response signal detection circuit 28, and a RAM 29. The relay CPU 24 is provided with a relay processing unit 34, an address abnormality determination unit 35, and a type search unit 36 as functions realized by program control.

  The RAM 29 stores an address table 30. The address table 30 extracts the address part of the fire sensor connected to the sensor line 20 drawn from the repeater 12 from the sensor connection data table 120 stored in the receiver 10 of FIG. This is the copied table.

  FIG. 7 is an address table 30 created by copying from the sensor address connection table 120 on the receiver side in FIG. 3, and shows two of the four lines drawn from the repeater 12, and shows the line number. The sensor address and the address valid flag are registered. Also in this address table 30, the sensor address whose address valid flag is bit 1 is an assigned address, and the sensor address whose address valid flag is bit 0 is unallocated and is in an empty state.

  The relay processing unit 34 of the relay CPU 24 in FIG. 6 sends a disconnection monitoring command and a normal monitoring command to the sensor line 20 via the transmission circuit 27 every time a transmission synchronization command is received from the receiver 10. For the down signal of the disconnection monitoring command, the fire detector 14-n that has been terminated transmits an up signal of the command response. In addition, all the fire detectors 14-1 to 14-n transmit a command response upstream signal for the downstream signal of the normal monitoring command.

  The downstream signal transmitted from the repeater 12 to the sensor line is a so-called voltage mode signal that changes the voltage of the sensor line 20. On the other hand, the upstream signals transmitted from the fire detectors 14-1 to 14-n are so-called current mode signals that change the current flowing through the detector line 20.

  When the relay processing unit 34 detects a fire in any of the fire detectors 14-1 to 14-n, a fire interrupt signal is transmitted to the sensor line 20. Send a command and get the detector address of the fire detector that triggered it.

  For example, a fire interrupt signal is transmitted three times at regular time intervals by the fire detector, and the relay processing unit 34 uses a sensor address search command upon receiving the fire interrupt signal. When the search address matches twice, the fire alarm is identified, the fire is confirmed by receiving the third fire interrupt signal, the fire detection signal is notified to the receiver 10 and the fire alarm is issued. .

  The address abnormality determination unit 35 refers to the address table 30 and responds to the address that has responded when receiving the normal monitoring response upstream signal from the fire detectors 14-1 to 14-n with the transmission of the normal monitoring command. Is an assigned address or an unassigned address, and when the unassigned address is judged, an address error is notified to the receiver 10.

  Upon receiving the type request command from the receiver 10, the type search unit 36 transmits a type search command to the sensor line 20, acquires the type from the response upstream signal of each fire detector, and holds it. When the type transfer request from the receiver 10 is received, the held type is transferred to the receiver 10.

  For the type search in this embodiment, the type search unit 36 of the repeater 12 actually transmits and acquires a type search command for each of the heat detector and the smoke detector. In order to simplify the explanation, it is assumed that the type is acquired by simply transmitting the type search command without dividing the type into heat and smoke.

  FIG. 8 is a block diagram showing an embodiment of the fire detector 14 in the present embodiment. In FIG. 8, the fire detector 14 includes a non-polar noise absorbing circuit 37, a constant voltage circuit 38 with 9 volt output, a constant voltage circuit 40 with 3 volt output, a reset monitoring circuit 42, a sensor CPU 44, an EEPROM 46 which is a volatile memory, A pulse drive circuit 48, a temperature detection element 50 such as a thermistor, a temperature detection circuit 52, a transmission signal detection circuit 54, and a response signal transmission circuit 56 are provided.

  The EEPROM 46 provided in the sensor CPU 44 stores type data 47 indicating that the fire sensor 14 is a heat sensor, further stores a sensor address, and accompanies the power-on of the sensor line 20. In the initialization process by reset start of the sensor CPU by the reset monitoring circuit 42, various setting information including the sensor address is expanded from the EEPROM 46 to the internal RAM to perform sensor control.

  The sensor CPU 44 is provided with a sensor response unit 64 as a function realized by program control. The sensor response unit 64 receives a downstream signal composed of a command from the repeater 12 and a response pulse, and is received at this time when the response pulse count value coincides with its own address. A response signal corresponding to the command being transmitted is transmitted as an upstream signal.

  For example, a downstream signal including a normal monitoring command from the repeater 12 is detected by the transmission signal detection circuit 54 and input to the sensor CPU 44. After the command content is decoded, if there is no abnormality in the fire sensor 14, the sensor The response unit 64 outputs a response signal to the response signal transmission circuit 56 at a vacant timing immediately after the response pulse count value matches the self address, and transmits a command response upstream signal according to a current change in the sensor line. If there is an abnormality in the fire detector 14, the command response uplink signal is not transmitted.

  Here, the pulse drive circuit 48 of the fire detector 14 receives a drive pulse at a constant time interval from the sensor CPU 44 to drive the thermistor as the temperature detection element 50, and the temperature detection circuit 52 detects the temperature at each detection timing. Is detected and read into the sensor CPU 44, a fire alarm is detected when the preset fire temperature is exceeded, and a fire interrupt signal is transmitted to the sensor line 20 using the transmission signal detection circuit 54.

  In the present embodiment, when detecting the fire alarm, the sensor CPU 44 transmits a fire interrupt signal, for example, three times continuously within the transmission interval of the normal monitoring command from the repeater 12. Assuming that the normal monitoring command is transmitted at intervals of 9 seconds, for example, the fire detector 14 continuously transmits fire interrupt signals at intervals of 3 seconds when a fire is triggered.

  For such fire interrupt signals from the fire detector 14, the repeater 12 issues a sensor number search command for the first and second times to obtain the sensor number, and the third fire interrupt signal. Is received on the condition that the search result of the sensor number matches twice, and the fire is confirmed to the receiver 10.

  When the fire is confirmed for the three fire interrupt signals at the repeater 12, the repeater 12 transmits an alarm indicator light control command, and the fire detector 14 receives an operation indicator light (not shown). Lights up.

  In the repeater 12, when the first fire is confirmed, a sensor address search command is issued continuously at a constant period. Therefore, when the second fire detector is triggered, By transmitting a sensor address response signal in response to the sensor address search command, it is possible to recognize a fire report on the same sensor line 20 such as the second report and the third report on the repeater 12 side.

  Note that the fire detector 14 of FIG. 8 is a heat detector using a temperature detection element 50 such as a thermistor, but includes a scattered light type smoke detection unit including a light emitting element and a light receiving element. Of course, it may be a fire detector.

  FIG. 9 is a time chart of transmission timings of a transmission synchronization command transmitted from the receiver 10 in this embodiment and a disconnection monitoring command and a normal monitoring command transmitted from the repeater to the fire detector in synchronization therewith.

  The transmission synchronization command 66 in FIG. 9A is transmitted from the receiver 10 to the repeater 12 at a constant period. Based on the transmission synchronization command 66, the repeater 12 sends a disconnection monitoring command 68 as shown in FIG. 9B. And the normal monitoring command 70 are transmitted alternately.

  FIG. 10 is a time chart of a command transmission downlink signal and a command response uplink signal between the repeater 12 and the fire detector 14 of the present embodiment. FIG. 10A shows a command transmission downstream signal. When the steady voltage of the sensor line is 19 volts, for example, the signal is changed from 19 volts to 31 volts.

  The down signal for command transmission performed by voltage change includes a start pulse 71, a reference pulse 72, commands 74 and 76, and a response pulse 78. In the present embodiment, the maximum number of fire detectors that can be connected to the detector line 20 is, for example, 32. For this reason, 32 response pulses 78 are transmitted following the command 76. The commands 74 and 76 are the same command, and the reliability is improved by sending two commands in succession.

  Here, the fire detector 14-2 at address 2 is not connected to the sensor line, and the address table 30 of the repeater 12 has an address valid flag of sensor address 2 at line number 1 as shown in FIG. Bit 0 indicates an unassigned address.

  In the fire detectors 14-1, 14-3 to 14-32, the response pulse 78 following the downstream signal command 76 is counted, and when the count value coincides with a preset self-address, the response immediately thereafter is counted. An upstream signal of a command response due to a current change is transmitted at the idle timing of the pulse 78 for use. FIG. 10B shows a case where the 37 fire detectors connected to the sensor line receive normal monitoring commands that are batch commands and send out an upstream signal of a command response.

  As shown in the fire detectors 14-1, 14-3 to 14-32 at addresses 1, 3 to 32 in FIG. 10 (C), the command response uplink signal counts response pulses 78 to each address. At the same timing, each fire detector transmits command response upstream signals 82-1, 82-3 to 82-32, and the combined signal is transmitted to the sensor line as the upstream signal in FIG. 10B. Will be.

  FIG. 11A is a floor layout of a building in which a fire detector that performs address setting corresponding to FIG. 10 is installed, and is partitioned into a room 1201 to a room 1207, and each room has a fire detector 14-1. , 14-3 to 14-8 are connected to the sensor line 20. The sensor addresses are # 01, # 03 to # 08, and the address # 02 is not assigned.

  FIG. 11 (B) shows a case where the partition is changed. The partition 136 between the rooms 1201 and 1202 is moved, and a fire detector 14-2 having an address # 02 is additionally connected to the room 1202 accordingly. Yes.

  FIG. 12 is a time chart of the downstream signal of the type search command and the upstream signal of the command response between the repeater and the fire sensor when the fire sensor 14-2 of FIG. 11B is added. In this case, with respect to the response pulse 78 following the command 76 in the downlink signal for command transmission in FIG. 12A, the respective fire detectors 14-1 as shown in FIG. The fire detector 14-2 and the fire detectors 14-3 to 14-32 added transmit command response upstream signals 82-1 to 82-32, and the combined signal is the upstream of FIG. It is transmitted as a signal to the sensor line.

  In the repeater 12 that has received the command response upstream signals 82-1 to 82-32 from the fire detectors 14-1 to 14-32, the command response upstream signal is received at the timing of address 2 that has not been obtained so far. 8-2 is received, but the address 2 is an unassigned address from the address table 30 of FIG. 7, and it is determined that the address is abnormal because the response uplink signal related thereto is received. You will be notified.

  FIG. 13 to FIG. 16 are time charts showing processes from receiver failure determination, type information search, and table update accompanying the addition of a fire detector.

  In FIG. 13, when the receiver 10 transmits a synchronous transmission command to the repeater 12 in step S1, and the synchronous transmission command has an odd timing, the repeater 12 transmits a disconnection monitoring command in step S101.

  Here, the fire detector 14-2 is not connected to the detector line at this stage, and the address 2 is not assigned. Since the disconnection monitoring command is received by the fire detectors 14-1, 14-3 to 14-32, and only the terminal fire detector 14-32 is set to the end, the fire detector 14-32 is set in step S401. An uplink signal of disconnection monitoring response is transmitted.

  When this response signal is received by the repeater 12, it is determined that the line is normal in step S102. If the disconnection monitoring response signal is not obtained, for example, if the response is not obtained three times in succession, the disconnection of the sensor line is confirmed and the receiver 10 is notified of the disconnection failure.

  Subsequently, the receiver 10 transmits a synchronous transmission command to the repeater 12 in the next step S2 after 9 seconds. Since this synchronous transmission command is an even timing, the repeater 12 is normally monitored in step S103. Send command to sensor line 20.

  When the fire detectors 14-1, 14-3 to 14-32 are normally connected to the detector line 20 and there is no failure, the fire detectors 14-1, 14-3 to 14-32 are connected to the downstream signals as shown in steps S201,. An upstream signal of a normal monitoring response is transmitted as a response at idle timing of a response pulse corresponding to the address. When the repeater 12 receives upstream signals from all the fire detectors 14-1, 14-3 to 14-32 in step S104, the repeater 12 determines whether or not the connection detector is normal.

  It is assumed that the fire detector 14-2 is additionally connected to the sensor line at this stage as shown in step S301.

  Subsequently, proceeding to FIG. 14, when the receiver 10 transmits a synchronous transmission command to the repeater 12 in step S3, the repeater 12 receives this and again transmits a disconnection monitoring command in step S105, and the disconnection monitoring command is fired. Although received by the sensors 14-1 to 14-32, since only the termination fire sensor 14-38 is set to the termination, in step S403, the fire sensor 14-38 outputs an upstream signal of the disconnection monitoring response. The repeater 12 determines that the line is normal in step 106.

  Subsequently, the receiver 10 transmits a synchronous transmission command to the repeater 12 in the next step S4 after 9 seconds, and the repeater 12 transmits a normal monitoring command to the sensor line 20 again in step S107. Therefore, if the fire detector 14-1, the added fire detector 14-2, and the fire detectors 14-3 to 14-32 are normally connected to the sensor line 20 and there is no failure, step S202, As shown in S302... S404, the upstream signal of the normal monitoring response is transmitted as a response at the idle timing of the response pulse corresponding to the self address of the downstream signal.

  However, since the uplink signal of the normal monitoring response from the added fire detector 14-2 is an unassigned address and is originally an address where the uplink signal is not received, the repeater 12 sets the sensor address in step S108. Recognizing that a change has occurred, the receiver 10 is notified of an address abnormality together with the changed address 2.

  Receiving the notification of the address abnormality, the receiver 10 refers to the sensor connection data table 120 in step S5, determines a sensor addition failure in which the fire sensor assigned the address 2 is added, and performs step S6 in FIG. The sensor addition process is started, and the type search of the added fire detector 14-2 and the acquisition of an arbitrary number are performed.

  The type of the added fire detector 14-2 is acquired as follows. The receiver 10 transmits a type request command to the repeater 12 in step S7. In response to this, the repeater 12 starts command reception and response in step S109.

  Subsequently, the receiver 10 transmits a transmission group setting command in step S8. With this transmission group setting command, the repeater 12 acquires the transmission output timing to the sensor in step S110. A command reception response is returned to the receiver.

  Subsequently, in step S9, the receiver 10 transmits the next synchronous transmission command, which is the transmission of the normal monitoring command in step S111 in the repeater 12, and all of the fire detectors 14-1 to 14-32 perform steps. Normal monitoring response transmission is performed as in S203, S303,... S405, and the connection sensor normality determination is performed in step S112.

  Subsequently, when the receiver 10 transmits a synchronous transmission command in step S10, the repeater 12 transmits a type request command in step S113. In response to this type request command, the fire detectors 14-1 to 14-32 transmit an upstream signal of a type response as in steps S204, S304, and S406. In response to this, the repeater 12 stores the type in the memory in step S114 of FIG.

  Subsequently, the receiver 10 transmits a synchronous transmission command in step S11, which becomes transmission of a disconnection monitoring command in step S115 of the repeater 12, and performs sensor normality determination in step S116. Subsequently, the receiver 10 performs polling command transmission during the synchronous transmission command transmission cycle in step S12. In response to the polling command transmission, the repeater 12 notifies completion of the type request command in step S117.

  In response to this, the receiver 10 transmits a secondary request command in step S13, and the repeater 12 responds and transmits the sensor address and type stored in the memory in step S118. In response to the response transmission of the type and address from the repeater 12, the receiver 10 includes the fire detector 14-2 added to the sensor connection data table 120 developed in the RAM 116 of FIG. 2 in step S14. Rewrite and update the type of all fire detectors connected to the detector line.

  When the update by acquiring the type of the fire detector 14-2 added in this way is completed, the receiver 10 starts an input process of an arbitrary number of the fire detector 14-2 added in step S15. For example, an input operation screen of an arbitrary number is displayed on the display unit of the receiver 10, and an input of an arbitrary number is requested corresponding to the address 2 of the added fire detector 14-2. In the case of FIG. 11B in response to this arbitrary number input request, the room number “1202” to which the fire detector 14-2 is added is input as an arbitrary number.

  Subsequently, in step S16, the receiver 10 performs update registration of the default sensor connection data table 118 of the EEPROM 118 and the sensor connection data table 120 of the RAM 116 as indicated by an arrow A in FIG. Transfer, the address valid flag is changed to the assigned address of bit 1 for the address table 30 in S119.

  As described above, in the present embodiment, for the addition of a fire sensor due to a partition change or the like, the type of the added fire sensor is automatically acquired, the sensor connection data table is updated, and the reception is further received. An arbitrary number input request is automatically made to the fire detector added in the machine, and even when the fire alarm facility is in operation, the attribute data acquisition and registration accompanying the passage of the fire detector is not switched to the maintenance mode. Can be realized easily and easily.

  In this embodiment, the command and response pulse are transmitted from the repeater as a downlink signal, the fire detector side decodes the command, and the response pulse is counted and the uplink signal is sent at an idle timing that matches the self address. Fire alarm equipment that employs a data transmission system that has a bi-directional transmission function using commands, addresses, and data between the repeater and the fire detector. Can also be applied.

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.

The block diagram which showed embodiment of the fire alarm equipment of this embodiment Block diagram illustrating an embodiment of a receiver Explanatory diagram of the sensor connection data table stored in the receiver Explanatory drawing of the fire alarm screen in this embodiment Explanation diagram of switching screen by touch switch operation of district message Block diagram showing an embodiment of a repeater Explanation of address table stored in repeater Block diagram showing an embodiment of a fire detector Time chart of transmission timing of disconnection monitoring command and normal monitoring command from repeater by transmission synchronization command of receiver Time chart of command transmission downlink signal and command response uplink signal between repeater and fire detector Explanatory drawing of adding a fire detector with a change in the partition of a building Time chart of down signal and up signal between repeater and fire detector when address is abnormal due to addition of fire detector Time chart showing processing up to receiver failure detection, type information search, table update due to addition of fire detector Time chart of type update processing following FIG. Time chart of type update processing following FIG. Time chart of type update processing following FIG. Explanatory drawing of the sensor connection data table of the receiver updated based on the determination of the sensor additional failure

Explanation of symbols

10: Receiver 12, 12-1, 12-2: Repeaters 14-1 to 14-n: Fire sensor 18: Transmission line 19: Repeater control lines 20, 20-1, 20-2: Sensor line 22, 102: Transmission circuit 24: Repeater CPU
25, 104: power supply unit 26: current detection circuit 27: transmission circuit 28: response signal detection circuit 29: RAM
30: Address table 34 :: Relay processing unit 35: Address abnormality determination unit 36: Type search unit 37: Nonpolar noise absorption circuit 38, 40: Constant voltage circuit 44, 46: Constant voltage circuit 42: Reset monitoring circuit 44: Sensing CPU
46: EEPROM
47: Type data 48: Pulse drive circuit 50: Temperature detection element 52: Temperature detection circuit 54: Transmission signal detection circuit 56: Response signal transmission circuit 64: Sensor response unit 66: Transmission synchronization command 68: Disconnection monitoring command 70: Normal Monitoring command 71: Start pulse 72: Reference pulse 74, 76: Command 78: Response pulse 82-1 to 82-38: Command response upstream signal 94: Fire monitoring unit 95: Fault determination unit 96: Arbitrary number acquisition unit 97: Type acquisition unit 98: data update unit 100: receiver CPU
106: Display unit 108: Operation unit 110: Acoustic alarm unit 112: Transfer unit 114: EEPROM
116: RAM
118: Default connection data table 120: Sensor connection data table 122: Fire message 124: Fire mark 125: Detailed display part 126: District message 128: Arbitrary number 130: Number of alarms 132: Shift switch 134: Address display part

Claims (7)

Connect the repeater to the transmission line drawn from the receiver, connect multiple fire detectors to the sensor line drawn from the repeater, and change the voltage from the repeater for command and response In a fire alarm facility that transmits a downstream signal including a pulse, and transmits an upstream signal by changing the current at the idle timing of the response pulse from the fire detector,
In the receiver,
A table storage unit for storing a sensor connection data table in which attribute data including an assigned address, a type, and an arbitrary number for each sensor line is registered for each fire sensor;
A fire monitoring unit that reads out the arbitrary number corresponding to the assigned address of the fire detector that has been notified from the sensor connection data table and displays the screen when a fire is triggered;
Fire alarm equipment characterized by the provision of
In the fire alarm facility according to claim 1,
In addition to the receiver,
A failure determination unit for determining a sensor addition failure based on an abnormality of the sensor address notified from the repeater;
An arbitrary number acquisition unit that is activated when the sensor additional failure is determined, and requests and acquires an input of an arbitrary number corresponding to the address of the additional sensor;
A data update unit that writes and updates the arbitrary number acquired by the arbitrary number acquisition unit in the attribute data of the fire detector determined to be an additional failure in the sensor connection data table;
Provided,
In the repeater,
An address storage unit for storing an address table storing an assigned address for each sensor obtained from the sensor connection table of the receiver;
When an upstream signal of a normal monitoring response is received from the fire detector as a result of transmission of a normal monitoring command, the reception of an upstream signal from an unassigned address is determined by referring to the address table, and an address error is detected in the receiver. An address abnormality determination unit to be notified;
Fire alarm equipment characterized by the provision of
In the fire alarm facility according to claim 2,
The receiver further transmits a request command of the type to the repeater when determining an additional sensor failure, and requests a transfer of the type when a completion response is received from the repeater. Provide a type acquisition unit to acquire the type,
The data update unit writes and updates the type acquired by the type acquisition unit to the connection data of the sensor determined to be an additional failure in the sensor connection data table,
In addition to the repeater,
When receiving a type request command from the receiver, a type search command is transmitted to the sensor line to acquire and hold the type from the response upstream signal of each fire detector, and from the receiver When a type transfer request is received, a type search unit that transfers the type held to the receiver,
Fire alarm equipment characterized by the provision of
2. The fire alarm system according to claim 1, wherein the alarm display unit of the receiver is configured to generate a fire alarm of the same sensor line adjacent to an arbitrary number of the fire alarm that has been alarmed when a fire alarm occurs. A fire alarm system that displays the number of reports on the screen.
5. The fire alarm system according to claim 4, wherein the alarm notification display unit of the receiver is arranged with a shift switch adjacent to the number of alarms of the fire detector, and each time the shift switch is operated, A fire alarm system that displays the arbitrary number of fire detectors that are being switched.
In the fire alarm facility according to claim 1, the table storage unit of the receiver registers a district message indicating an installation location and type of the repeater in the sensor connection data table,
The notification display unit of the receiver reads the district message corresponding to the fire detector that has issued the alarm from the sensor connection data table and displays it on the screen together with the arbitrary number when the fire is triggered. Notification equipment.
  7. The fire alarm system according to claim 6, wherein a notification display unit of the receiver includes a touch switch corresponding to a display part of the district message, and senses the district message when the touch switch is operated. Fire alarm equipment characterized by switching to the display of the district number including the unit assigned address.

Images