JP4936510B2 - Fire alarm system - Google Patents

Description

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

Conventionally, in a fire alarm system which is connected to P-type addressable fire detector to sensor lines from the repeater, it is processing the sensor response and command transmission to by Ri fire detector to the pulse counting transmission scheme.

  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 facility, the fire detector connection data is required to perform fire monitoring control with the receiver, and the address, type of smoke or heat, block number, contact information, linkage destination, Sensor connection data such as messages are prepared for each fire detector at the manufacturing stage, stored in a nonvolatile memory such as EEPROM, set in the receiver, and from the nonvolatile memory to RAM etc. at startup when the receiver is turned on The sensor connection data necessary for fire monitoring is obtained by reading out the data into the volatile memory and expanding it.
JP-A-2005-004352

By the way, in such a fire alarm system, if during the operation after installing a fire alarm system, such as the partition change of floor is carried out changed the buildings and facilities of the tenant who has installed, along with this For example, the fire detector may be changed from a conventional heat detector to a smoke detector, or a new fire detector may be added or removed.

  However, to change, add, or remove 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. Although the sensor connection data is changed using a rewriting 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 rewriting function of a nonvolatile memory such as EEPROM and an application for changing the connection data, and the functional configuration of the receiver becomes complicated and the cost increases. There is.

  Furthermore, since changing sensor connection data is an artificial operation by operating the screen, there is a possibility that the sensor connection data may be changed, added, or deleted by mistake. However, there is a problem that the work load is large.

The present invention narrows down the data that needs to be changed in the sensor connection data according to the change, addition, or removal of the fire detector to specific attribute data, for example, type, and automatically by the acquisition request from the receiver to the repeater It is an object of the present invention to provide a fire alarm facility that can acquire the type of a fire detector and change it easily and accurately according to the actual sensor connection status.

The present invention connects a repeater to a transmission line drawn from a receiver, and connects a plurality of fire detectors to a sensor line drawn from the repeater, and includes a command and a response pulse from the repeater. It is intended for fire alarm equipment that transmits a signal and transmits an upstream response signal to the command from the fire detector at a timing corresponding to the self-address of the response pulse .

The present invention per such fire alarm equipment,
To the receiver
A data storage unit for storing for each fire sensor sensor connection data including attribute data that is unique to the fire sensor and can be transmitted in response to a command;
Transmits a request command attribute data to the repeater, writes the sensor connection data connection data storing unit attribute data transferred to request the transfer of attribute data when the completion response is received from the repeater A data update unit to be updated at
Provided,
In the repeater,
When a request command for attribute data from the receiver is received, a plurality of attribute data search commands corresponding to each attribute data are sequentially transmitted to the sensor line, and each fire detector corresponding to each of the plurality of attribute data search commands is transmitted. A data search unit that acquires and holds attribute data from the response uplink signal, and transmits a completion response to the receiver when the search of the attribute data is completed,
A data transfer unit that transfers the stored attribute data to the receiver when receiving a request to transfer the attribute data from the receiver;
And the data search unit transmits each of the plurality of attribute data search commands to the plurality of fire detectors at once.

In a specific form of the present invention, the downstream signal from the repeater is transmitted by changing the voltage, and the response upstream signal from the fire detector is an idle timing corresponding to the self address of the response pulse. Transmit by changing the current at. Further, the attribute data that is unique to the sensor and can be transmitted in response to the search command is, for example, a type indicating whether the fire sensor is a smoke sensor or a heat sensor. For fire alarm equipment,
To the receiver
A data storage unit that stores sensor connection data including types for each fire detector;
A data update unit that transmits a request command of a type to the repeater, requests transfer of the type when a completion response is received from the repeater, and writes and updates the transferred type in the sensor connection data of the data storage unit When,
Provided,
In the repeater,
When a type request command from the receiver is received, a plurality of type search commands corresponding to each type are sequentially transmitted to the sensor line, and each fire detector responds to each of the plurality of type search commands. A data search unit that acquires and holds the type and sends a completion response to the receiver when the type search is completed,
A data transfer unit for transferring the type held to the receiver when a type transfer request is received from the receiver;
The data search unit collectively transmits each of the plurality of type search commands to the plurality of fire detectors, and sets the reception timing of the response uplink signal as a response pulse transmitted following the type search command. Correspondingly, it is characterized in that the address of the fire detector that transmitted the response upstream signal to each of the plurality of type search commands is specified .

  Here, when the data update unit of the receiver receives the fire detector power-on request signal from the repeater, it requests the repeater to acquire the type.

  In addition, the data update unit of the receiver requests the repeater to acquire the type when the initial set operation is determined in the state where the maintenance mode is selected. For example, the data update unit of the receiver requests the repeater to acquire a type for a specific sensor line or a specific fire sensor based on the selection operation.

  Further, the data update unit of the receiver requests the repeater to acquire the type at the time of periodic self-diagnosis processing executed every predetermined period.

The data storage part of the receiver
Non-volatile memory that stores sensor connection data whose type is empty data;
Volatile memory that reads and stores sensor connection data from nonvolatile memory at power-on start,
With
The data update unit of the receiver writes the type transferred from the repeater in the sensor connection data developed in the volatile memory, and performs initial setting or update.

The type search command to be sent from the repeater to the fire detector is the type search command for the heat detector that sends the upstream signal of the type response from the heat detector, and the type of smoke sensor that sends the type response upstream signal from the smoke detector. This is a type search command.

  According to the present invention, even if a fire detector type change occurs due to a tenant change or the like, a power-on request signal is received from the fire detector after the change, initial set operation by screen operation, or periodic self-diagnosis As a result, the type of fire detector is acquired by executing the type search for the fire detector, and automatic update is performed by rewriting the sensor connection data, reducing the labor and time required to change the sensor connection data. And the costs associated with the change can be reduced.

In the case of the pulse count transmission method, the maximum number of fire detectors (maximum addresses) that can be connected to the detector line is determined to be 38 addresses, for example, depending on the number of response pulses transmitted with the command. vessel type other than the address, the block number, contact, linkage destination, the data, such as messages without the need to change since it is a fixed differential Orutodeta, the reading in and search command or the like specific to the fire detector By narrowing down the rewrite object to attribute data such as possible types, the sensor connection data can be automatically rewritten easily and accurately.

  In addition, for example, a special operation after changing the fire detector is made by linking the process of acquiring the sensor type and updating the sensor connection data to the periodic self-diagnosis executed once a week. Even if it is left as it is without performing any processing, it will be automatically updated to the new type at the time of the periodic self-diagnosis that will be performed, and the sensor accompanying the change of the fire detector It is possible to eliminate the need for artificial rewriting of connection data.

Furthermore, not only when the fire detector is changed, but also when a fire detector is added or removed, the power-on request signal is received from the fire detector when it is added, the initial set operation by screen operation, or periodic In response to self-diagnosis, the sensor connection data of the receiver can be automatically changed.

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. The sensor 14 ( 14-1 to 14-n ) is connected.

  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. The receiver CPU 100 is provided with functions of a fire monitoring unit 94, a data management unit 96, and a data update unit 98 as functions executed by program control. Yes.

  For the receiver CPU 100, a transmission circuit 102, a power supply unit 104, a display unit 106, an operation unit 108, an acoustic alarm unit 110, a transfer unit 112, an EEPROM 114, and a RAM 116 are provided.

Fire monitoring unit 94 is sent a transmission synchronization command at predetermined intervals for example 9 seconds through a transmission line 18 to the repeater 1 with an instruction for the transmission circuit 102, a predetermined number of times during the transmission synchronization command, polling Sending commands.

When the fire monitoring unit 94 receives a fire interrupt signal from the repeater 12 , the fire alarm is displayed using the display unit 106, an acoustic alarm is output from the acoustic alarm unit 110, and a transfer unit 112 is provided if necessary. Is used to control the smoke-proof doors and alarm bells as interlocking devices. As the operation unit 108, an operation screen with a touch panel used for the display unit 106 is provided, and in addition, a switch necessary for appropriate fire monitoring is provided.

The data management unit 96 manages the sensor connection data of the fire sensor 14 connected to the sensor line 20 via the repeater 12 . When In the present embodiment, the launched stores a fire detector default connection data table 118 in a non-volatile memory EEPROM 114, the facility with power supply of the fire receiver 10, def EEPROM 114 Oruto The connection data table 118 is read by the receiver CPU 100, developed as the connection data table 120 in the RAM 116, and used as data necessary for fire monitoring by the fire monitoring unit 94.

Figure 3 is an illustration of a default connection data table 118 stored in EEPROM114 receiver 10, 38 units of the fire is a number of connections that can be connected to the sensor lines 20 drawn out from the repeater 12 in FIG. 1 The connection data of the sensor 14 is taken as an example.

In the default connection data table 118 of FIG. 3, the repeater address, the type of repeater, line number, block number, area name, linkage destination data, detector address, is registered the type of sensor. Four lines are drawn from the repeater 12, but FIG. 3 shows two of them, and each line stores sensor addresses 1 to 38 divided into 38 fire detectors. In addition, a storage area of a type is provided.

Default connection data table 118 is created in advance at the factory manufacturing stage of the receiver 10, is written to the EEPROM 114, it is set to the receiver 10.

Here among the data stored in the default connection data table 118, are all vacant data about the type of sensor. Therefore, in the initial stage of the receiver 10 is deployed a connection data table 120 in the RAM116 rises when the power source is turned on in FIG. 2, type in the same manner as in FIG. 3 is in a state of free data.

The free data of the type is automatically acquired through the type update process accompanying the initialization process after power-on, and is actually installed in the type area as shown in the connection data table 120 of FIG. 4 at the start of operation. “Smoke” or “heat” is stored as the type acquired from the fire detector 14 . The type “vacant” in the address 36 means that no fire detector is connected to this address position.

Referring to FIG. 2 again, the data update unit 98 provided in the receiver CPU 100 transmits a type request command to the repeater 12 at a predetermined type update timing, and a command completion response is received from the repeater 12 . At this time, the transfer of the type is requested, and the transferred type is written into the connection data table 120 developed in the RAM 116 and updated.

The update of the connection data table 120 by the data update unit 98 is performed when the power of the receiver 10 is turned on and the fire detector 14 connected to the sensor line 20 from the repeater 12 during operation. It is executed when changes are made, added, or removed.

  In the present embodiment, the trigger for the data update unit 98 to update the type of the connection data table 120 is one of the following.

(1) When a power-on request signal is received by changing or adding the fire detector 14 ;
(2) When initial setting is instructed by screen operation by the operation unit 108;
(3) When a periodic inspection diagnosis performed once a week by the fire monitoring unit 94 is started;
Of course, it is possible to perform the type updating process by the data updating unit 98 at an appropriate timing other than the above (1) to (3).

  FIG. 5 is a block diagram showing an embodiment of a repeater in the present embodiment. In FIG. 5, the repeater 12 includes a transmission circuit 22, a repeater CPU 24, a power supply unit 26, a current detection circuit 28, a transmission circuit 30, and a response signal detection circuit 32. The relay CPU 24 is provided with a relay processing unit 34, a data search unit 35, and a data transfer unit 36 as functions realized by program control.

  Each time the relay processing unit 34 receives a transmission synchronization command from the receiver 10, it sends a disconnection monitoring command and a normal monitoring command to the sensor line 20 by driving the transmission circuit 30. 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 20 is a so-called voltage mode signal for changing the voltage of the sensor line. On the other hand, the upstream signals transmitted from the fire detectors 14-1 to 14-n are so-called current mode signals for changing the current flowing through the detector line 20.

  When the fire processing is detected by any of the fire detectors 14-1 to 14-n, the relay processing unit 34 receives the fire interrupt signal because a fire interrupt signal is transmitted to the sensor line 20. The sensor address search command is transmitted, and the sensor address of the fire sensor that has been notified is acquired.

  For example, the fire detector transmits a fire interrupt signal three times at regular time intervals, and the relay processing unit 34 detects the fire interrupt signal by receiving the fire interrupt signal twice. If a sensor address that matches the search result of the device address search command is obtained twice, a fire alarm is identified, and the fire is confirmed by receiving the third fire interrupt signal. Notify by fire interrupt signal and fire alarm.

  When receiving the type request command from the receiver 10, the data search unit 35 provided in the repeater CPU 24 transmits the type search command to the sensor line 20 and acquires the type from the response upstream signal of each fire detector. When the type search is completed, a completion response is transmitted to the receiver 10.

In response to the completion response from the data search unit 35, the data transfer unit 36 receives the secondary request command that is a type transfer request from the receiver 10, and sets the type stored in the memory to the receiver 10. Transfer and update the connection data table.

FIG. 6 shows a list of batch commands used in the repeater 12 of FIG. In this batch command list, there are a disconnection monitoring command of command code 04 and a normal monitoring command of command code 08 which are alternately transmitted in accordance with a transmission synchronization command from the receiver 10, and the disconnection monitoring command is a termination detector. The answering terminal becomes a termination sensor. The normal monitoring command is a call of all the fire detectors, and as a response terminal, all normal fire detectors connected to the sensor line give a command response.

Further, as the type search command used in the data search unit 35 of FIG. 5, type request commands of command codes 05 and 06 are provided. The type request command of the command code 05 is used for calling the smoke detector, and the responding terminal becomes the smoke detector. The type request command of the command code 06 is used for calling the heat sensor, and the response terminal is only the heat sensor.

  FIG. 7 is a block diagram showing an embodiment of the fire detector 14 in the present embodiment. In FIG. 7, the fire detector 14 includes a nonpolar noise absorbing circuit 37, a 9 volt output constant voltage circuit 38, a 3 volt output constant voltage circuit 40, a reset monitoring circuit 42, a sensor CPU 44, an EEPROM 46 as 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 sensor CPU 44 EEPROM 46 which is provided against the, the type data 47 indicating that the fire detector 14 is a thermal sensor is stored and is further detector address storage, power on sensor lines 20 In the initialization process by the reset start of the sensor CPU 44 by the reset monitoring circuit 42 accompanying this, 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 and a power-on request unit 65 as functions 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. An uplink signal as a response signal corresponding to the command being transmitted is transmitted.

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 uplink signal due to a current change in the sensor line 20 . If there is an abnormality in the fire detector 14, the command response uplink signal is not transmitted.

  The power-on request unit 65 receives a power-on request signal when receiving the first normal monitoring command or disconnection monitoring command of the downlink signal transmitted from the repeater 12 after being activated by receiving power supply from the sensor line 20. Is transmitted to the repeater by driving the response signal transmission circuit 56. A power-on request signal as a command response signal associated with power-on of the fire detector 14 is received by the repeater 12 and then transferred to the receiver 10. The receiver 10 that has determined the power-on request performs type update processing. Will start.

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 a 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. If normal monitoring commands are 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.

Per fire interrupt signal from such fire sensor 14, the first and the relay 12 for the second time to get the sensor address by issuing a search command of the sensor address, the third fire interrupt signal The fire is confirmed on the condition that the search result of the sensor address coincides twice by the reception of, and the fire occurrence is notified 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 fire is confirmed in the first report, the sensor address search command is issued continuously at a constant period. Therefore, when the second fire sensor 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. 7 is an example of 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. 8 is a time chart of the transmission synchronization command transmitted from the receiver 10 in this embodiment and the transmission timing of the disconnection monitoring command and the normal monitoring command transmitted from the repeater to the fire detector in synchronization therewith.

  The transmission synchronization command 66 in FIG. 8A is transmitted from the receiver 10 to the repeater 12 at a constant cycle. Based on the transmission synchronization command 66, the repeater 12 sends a disconnection monitoring command 68 as shown in FIG. And the normal monitoring command 70 are transmitted alternately.

FIG. 9 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. 9A shows a command transmission downstream signal. When the steady voltage of the sensor line 20 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, 38. For this reason, 38 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.

  In the fire detectors 14-1 to 14-38, the response pulse 78 following the downstream signal command 72 is counted, and when the count value matches the preset self-address, the response pulse 78 immediately after that is counted. An uplink signal of command response due to current change is transmitted at idle timing. FIG. 9B shows a case where the 38 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 to 14-38 at addresses 1 to 38 in FIG. 9C, the command response uplink signal is counted at the timing when the response pulse 78 is counted and coincides with each address. Fire detectors transmit command response upstream signals 82-1 to 82-38, and the combined signal is transmitted to the sensor line as the upstream signal in FIG. 9B.

  FIG. 10 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 detector. As the downstream signal commands 74 and 76 in FIG. 10A, at the time of type search, a type request command for the smoke detector of the command code 05 in the batch command list in FIG. The type request command for the heat sensor is transmitted.

  If the type search command for the smoke detector is transmitted as the commands 74 and 76, the fire detectors 14-1, 14-2 and 14-37 at the addresses 1, 2 and 37 are the smoke detectors in this example. If the other is a heat detector, the addresses 1, 2 of the fire detectors 14-1, 14-2, 14-37 at the timings of the first, second and 37th idle pulses of the response pulse 78. , 37, the uplink signal is transmitted, and this combined signal is received by the repeater 12 as the uplink signal in FIG.

  Regarding the upstream signal of the command response to the type search command for such a smoke detector, the repeater 12 made a type response from the count value of the response pulse 78 at the timing of receiving the command response upstream signal. Recognize the address of the smoke detector and store the address and type in memory.

FIG. 11 is a time chart of normal monitoring and disconnection monitoring of the repeater 12 corresponding to the transmission synchronization command of the receiver 10. In FIG. 11, when the receiver 10 transmits a transmission synchronization command to the repeater 12 in step S1, the repeater 12 receives this, and if the transmission synchronization command has an odd timing in step S101, the receiver 10 sends a disconnection monitoring command. Send. Although the disconnection monitoring command is received by the fire detectors 14-1 to 14-38, since only the termination fire detector 14-38 is set as the termination, the fire detector 14-38 monitors the disconnection in step S 401. A response uplink signal 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 step S2 9 seconds after step 1, and since this transmission synchronous command is an even timing, the repeater 12 is normal in step S103. A monitoring command is connected to the sensor line 20.

  When the fire detectors 14-1 to 14-38 are normally connected to the detector line 20 and there is no failure, as shown in steps S201, 301,. An upstream signal of a normal monitoring response is transmitted as a response at the idle timing of the corresponding response pulse. When the repeater 12 receives the upstream signals from all the fire detectors 14-1 to 14-38 in step S104, the repeater 12 determines whether the connection detector is normal.

12 and 13 are time charts of the type update process executed in response to the power-on request accompanying the change of the fire detector. FIG. 13 shows that the fire detector 14-2 is in a state where the current heat detector is changed to a smoke detector and the power is turned on, and in this state, the receiver 10 transmits a transmission synchronization command in step S1. Then, since this command is a command received first after the fire detector 14-2 is changed, a power-on request signal is transmitted to the repeater 12 in step S301. In addition, the fire detector 14-38 that has been set as the termination transmits a disconnection monitoring response in step S401.

In step S102, the repeater 12 determines that the line is normal and holds the power-on request signal from the fire detector 14-2. Then the receiver 10, transmitted from the fact that send polling command during a transmission interval of a transmission synchronization command at step S2, the repeater 12 to the polling command, the power-on request signal to the receiver 10 at step S103 To do.

  In step S3, the receiver 10 recognizes the power-on by the connection after the change of the sensor based on the power-on request signal, and starts the type update process. In the type update process, a type request command is transmitted to the repeater 12 in step S4. In response to this, the repeater 12 starts command reception and response in step S104.

Subsequently, the receiver 10 transmits a transmission group setting command in step S5. With this transmission group setting command, the repeater 12 acquires the transmission output timing to the sensor in step S105. Then, a command reception response is returned to the receiver 10 .

Then the receiver 10 performs the transmission of the next transmission synchronization command at step S6, which receives the repeater 12, the normal monitoring command is transmitted from the repeater 12 in step S106, the fire detector 14-1 to 14 All of −38 perform normal monitoring response transmission as in steps S201, S301,... S402, and the connection sensor normality determination is performed in step S107.

Subsequently, when the receiver 10 transmits a transmission synchronization command in step S7 of FIG. 13, the repeater 12 transmits a type request command for the smoke detector in step S108. In response to this type request command, the fire detectors 14-1 and 14-2, which are smoke detectors, transmit an upstream signal of a type response as in steps S202 and S303.

Repeater 12 receives this, in step S10 9, stores the address of the sensor in response to that type is smoke in the memory. Subsequently, when the type request command for the heat detector is transmitted in step S110, for example, the fire detector 14-38, which is a heat detector, transmits an upstream signal indicating the type response in step S403, and the repeater 12 is in step S111. The address of the sensor responding that the type is heat is stored in the memory. Of course, the other fire detectors 14-3 to 14-37 also respond to the type search commands for the smoke detector or the heat detector, respectively.

Then the receiver 10 transmits the transmission synchronization command in step S8, which receive repeater 12, disconnection monitoring command from the repeater 12 is transmitted in step S112, it performs the sensor lines normality determination in step S113. Subsequently, the receiver 10 transmits a polling command during the transmission synchronization command transmission period in step S9, and the relay 12 notifies the completion of the type request command in step S114 in response to the polling command transmission.

  In response to this, the receiver 10 transmits a secondary request command in step S10, and the repeater 12 transmits in response the sensor address and type stored in the memory in step S115. Upon receiving the response of the type and address from the repeater 12, the receiver 10 rewrites and updates the type of the connection data table 120 developed in the RAM 116 in FIG. 2 in step S11.

  FIG. 14 is an example of the connection data table 120 rewritten by the type update processing of FIGS. 12 and 13. Here, as shown in FIG. 4, in the connection data table 120 before the type update, the fire detector at the address 2 indicated by the arrow A has the type “heat”, but the fire detector is the heat detector. In accordance with the type update process after the change from smoke detector to smoke detector, it is rewritten as “smoke” as the type of fire detector at address 2 of arrow A in FIG.

  In addition, in the fire detector at the address 36 indicated by the arrow B in the connection data table 120 before the type update in FIG. 14, the type is “vacant” and the fire detector is not connected. However, if a new heat sensor is connected to the address 36, a new "heat" type is written to the fire detector type at the address 36 indicated by the arrow B as an update result by the type update process. Is done.

  In addition, if the fire detector is removed, the type information cannot be obtained by the type update process, so the type of “smoke” or “heat” stored in the type area is cleared. It will be updated to “free”.

FIG. 15 is a time chart of the type update process executed at the initial set by the screen operation. In FIG. 15, after changing the fire detector 14-2 from the heat detector to the smoke detector, the receiver 10 designates the maintenance mode and the line by operating the screen as in step S <b> 1, and instructs the initial set. In step S2, the sensor replacement connection is recognized and the type update process is started. The process of step S 4 and subsequent after starting this type update process will be omitted since it is the same as the step S4 and subsequent steps in the receiver 10 of FIG. 12.

  FIG. 16 is an explanatory diagram of a screen operation for performing an initial set that triggers the type update process. FIG. 16A shows a maintenance screen 122 when performing an initial set. Since an initial set button 124 is provided as a menu in the maintenance screen 122, this is clicked with the mouse.

  When the initial set button 124 is clicked with the mouse, the screen is switched to the initial set screen 125 shown in FIG. 16B, and the line selection area 126 for initial setting is selected by the scroll key. By this line selection, the screen is switched to the initial set screen 125 in FIG. 17, and the initial set instruction in step S1 in FIG. 15 is determined by pressing the initial set button 130, and the type update process is started by recognizing the exchange connection of the sensor. Will be.

FIG. 18 is a time chart of the type update process executed in response to the periodic inspection diagnosis in the receiver 10. In FIG. 18, the receiver 10 executes a periodic inspection diagnosis process once a week, for example. When the periodic inspection diagnosis timing is determined in step S2, a type request command is transmitted to the repeater 12 in step S3. This is identical to step S4 of FIG. 12, and thereafter will perform a classification update process corresponding to step S11 of FIG. 13 from step S5 in FIG. 12.

  In the type update process that is executed in response to this periodic inspection diagnosis, when the fire detector is changed, added, or removed, it is assumed that the receiver 10 is left without performing any special operation or instruction. However, the type update process is automatically executed during the periodic inspection diagnosis process performed once a week, and the type information of the fire detector after the change is acquired and the type update is automatically performed. .

  In this embodiment, the fire detector itself is unique data and attribute data that can be read from the fire detector by a command. For example, the type is used for the fire monitoring process of the receiver. If the content of the sensor connection data of the fire detector to be used is attribute data equivalent to the type data, the attribute data acquisition process may automatically acquire the attribute data from the fire detector and update it. Good.

  In the present embodiment, the command and response pulse are transmitted from the repeater as a downstream signal, the fire detector side decodes the command, and the response pulse is counted and the upstream signal is transmitted at a free 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.

Block diagram showing an embodiment of the fire alarm facility of the present embodiment using a repeater and a fire detector The block diagram which showed embodiment of the receiver in this embodiment Illustration of a default connection data table stored in the EEPROM of the receiver Explanatory drawing of the connection data table in which the type is written after being expanded in the RAM The block diagram which showed embodiment of the repeater in this embodiment Explanatory drawing of a list of batch commands transmitted from the repeater of this embodiment The block diagram which showed embodiment of the fire detector in this embodiment 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 Time chart of downstream signal of type search command and upstream signal of command response between repeater and fire detector Time chart for normal monitoring and disconnection monitoring of repeaters corresponding to receiver transmission synchronization commands Time chart of type update processing that is executed in response to a power-on request accompanying a change in the fire detector Time chart of type update processing following FIG. Explanatory drawing of connection data table updated with change of smoke detector from heat detector Time chart of type update processing executed at the initial set by screen operation Illustration of screen operation for initial setting Explanatory drawing of screen operation following FIG. Time chart of the type update process that is executed with periodic inspection diagnosis

10: Receiver 1 2: Repeater
14 ( 14-1 to 14-n ) : Fire detector 18: Transmission line 19: Repeater control line 20, 20-1, 20-2: Sensor line 22, 102: Transmission circuit 24: Repeater CPU
26, 104: power supply unit 28: current detection circuit 30: transmission circuit 32: response signal detection circuit 34 :: relay processing unit 35: data search unit 36: data transfer unit 37: nonpolar / noise absorption circuit 38, 40: constant Voltage circuits 44 and 46: Constant voltage circuit 42: Reset monitoring circuit 44: Sensor CPU
46: EEPROM circuit 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 65: Power-on request unit 66: Transmission Synchronous command 68: Disconnection monitoring command 70: Normal monitoring command 71: Start pulse 72: Reference pulse 74, 76: Command 78: Response pulse 80: Preliminary response pulse 82-1 to 82-38: Command response upstream signal 94: Fire monitoring unit 96: data management 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: connection data table 122: maintenance screen 124, 130: Initial set button 125: initial setting screen 126: Line Selection area

Claims (8)

A repeater is connected to the transmission line drawn from the receiver, a plurality of fire detectors are connected to the sensor line drawn from the repeater, and a downstream signal including a command and a response pulse is sent from the repeater. transmitted, in the fire alarm system for transmitting a response uplink signal to the command from the fire detector at a timing corresponding to the own address of the response pulse,
In the receiver,
A data storage unit that stores sensor connection data that is unique to the fire detector and includes attribute data that can be transmitted in response to a command for each fire detector;
Sending the attribute data request command to the repeater, requesting transfer of the attribute data when a completion response is received from the repeater, and transferring the transferred attribute data to the sensor connection data of the data storage unit A data update unit for writing and updating
Provided,
In the repeater,
When the attribute data request command is received from the receiver, a plurality of attribute data search commands corresponding to each attribute data are sequentially transmitted to the sensor line, and each of the plurality of attribute data search commands is transmitted. A data search unit that acquires and holds attribute data from the response signal of the fire detector and transmits a completion response to the receiver when the search of the attribute data is completed;
A data transfer unit that transfers the held attribute data to the receiver when receiving the attribute data transfer request from the receiver;
With
The fire alarm system, wherein the data search unit transmits each of the plurality of attribute data search commands to the plurality of fire detectors at once.

Connect a repeater to the transmission line drawn from the receiver, and connect a plurality of 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 a response upstream signal to the command by changing a current at an idle timing corresponding to the self-address of the response pulse from the fire detector,
In the receiver,
A data storage unit that stores sensor connection data including types for each fire sensor;
Sending the request command of the type to the repeater, requesting the transfer of the type when a completion response is received from the repeater, and writing the transferred type in the sensor connection data of the data storage unit A data updater to update;
Provided,
In the repeater,
When the request command of the type is received from the receiver, a plurality of type search commands corresponding to each type are sequentially transmitted to the sensor line, and each fire detector for each of the plurality of type search commands is transmitted. A data search unit that acquires and holds a type from a response uplink signal and transmits a completion response to the receiver when the search for the type is completed;
A data transfer unit that transfers the type held to the receiver when the type transfer request is received from the receiver;
With
The data search unit collectively transmits each of the plurality of type search commands to the plurality of fire detectors, and transmits the reception timing of the response uplink signal following the type search command. A fire alarm facility characterized by identifying an address of a fire detector that has transmitted the response upstream signal in response to each of the plurality of type search commands in correspondence with a pulse .

3. The fire alarm system according to claim 2, wherein the data updating unit of the receiver requests the repeater to acquire the type when receiving a fire detector power-on request signal from the repeater. Fire alarm equipment characterized by that.
3. The fire alarm system according to claim 2, wherein the data update unit of the receiver requests the repeater to acquire the type when an initial set operation is determined in a state where the maintenance mode is selected and operated. Fire alarm equipment characterized by that.
3. The fire alarm system according to claim 2, wherein the data update unit of the receiver requests the repeater to acquire a type for a specific sensor line or a specific fire detector based on a selection operation. Fire alarm equipment.
3. The fire alarm system according to claim 2, wherein the data update unit of the receiver requests the repeater to acquire the type during a periodic self-diagnosis process executed every predetermined period. Fire alarm equipment.
In the fire alarm facility according to claim 2,
The data storage unit of the receiver is
Non-volatile memory that stores sensor connection data whose type is empty data;
A volatile memory that reads and stores the sensor connection data from the non-volatile memory at power-on start;
With
The data updating unit of the receiver writes the type transferred from the repeater in the sensor connection data developed in the volatile memory, and performs initial setting or updating.
  3. The fire alarm system according to claim 2, wherein the type search command transmits a type search command for a thermal sensor that transmits an upstream signal of a type response from a heat detector, and an upstream signal of a type response from a smoke detector. A fire alarm facility characterized by a type search command for a smoke detector to be activated.

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