JP2005011115A - Fire alarm equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform test operation of a sensor connected to a sensor line of a relay apparatus from a fire receiver. <P>SOLUTION: The fire receiving part is provided with a test input means designating the relay apparatus with a test function according to an address on a transmission line and designating the sensor with an automatic test function according to a branch number on the sensor line and a test control means transmitting a test control instruction designating the address and the branch number to the transmission line on the basis of input to the test input means. The relay apparatus with the test function is provided with a test relay means receiving the test control instruction and outputting a test operation instruction designating the branch number to the sensor line when the designated address is one's own address. The sensor with the test function is provided with a test operation means receiving the test operation instruction and changing to an operation condition when the designated branch number is one's own number. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
[Industrial application fields]
The present invention relates to a fire alarm facility.
[0002]
[Prior art]
Conventionally, in fire alarm equipment where multiple terminal devices such as fire detectors, repeaters, transmitters or controlled devices are connected to a fire receiver, an address is assigned to each terminal device, and the address is assigned from the fire receiver side. A polling system (cyclic polling system) is used in which terminal devices are sequentially called based on the terminal device, and only the called terminal device transmits individual information (fire signal, etc.) on the terminal device to a fire receiver. Then, the fire receiver performs data processing for a large number of terminal devices and sequentially calls them to collect information such as the occurrence of a fire from each terminal device.
[0003]
When such a polling method is used, each terminal device cannot transmit its own information to the fire receiver until a call is received. The period for receiving this call becomes longer as the number of terminal devices connected to the transmission line increases.
[0004]
Therefore, a plurality of terminal devices on the transmission line are divided into a plurality of groups, the fire receiver performs polling for each group, and terminal devices belonging to the group based on polling signal transmission to a predetermined group among the plurality of groups A polling method (point polling selecting method) for receiving information from the time-division is used. And it is shown that the selecting operation | movement which transmits a control command like a status information return command to a specific terminal device is performed as needed (for example, refer patent document 1).
[0005]
In addition, as a method different from the above-mentioned polling method, system polling is used for each group to reduce the time required for the fire receiver to reliably grasp the terminal device that has malfunctioned. A polling method (system polling selecting method) that collects status information by selecting a change by detecting status changes for each terminal device in the group by point polling for the group that responded, identifying the terminal device In this method, which is also used, since it is not necessary to call a terminal device whose state does not change, state information is collected only from the terminal device whose state has changed (see, for example, Patent Document 2).
[0006]
[Patent Document 1]
JP-A-10-188186
[0007]
[Patent Document 2]
JP-A-2-201597
[0008]
[Problems to be solved by the invention]
By the selecting operation used in each of the above polling methods, a test command for each terminal device can be sent on the transmission line. In this conventional test control, a test command is sent to each terminal device. Although a test operation can be performed, when a repeater with a test function is used as a terminal device and a sensor with a plurality of test functions is used for the sensor line from there, a test on the sensor line from the fire receiver Cannot specify sensor with function.
[0009]
Furthermore, in each of the above-described polling methods, a recovery command is sent by system polling, the recovery operation covers the entire facility, and the terminal device cannot be recovered individually. This may cause forgetting to recover when recovered individually, but there is a demand for recovering sequentially when the system is heavily loaded when recovered at once.
[0010]
Accordingly, it is an object of the present invention to cause a test operation of a detector connected to a detector line of a repeater from a fire receiver, and to individually restore and control each terminal device from the fire receiver. .
[0011]
[Means for Solving the Problems]
In the present invention, a plurality of terminal devices are connected to one transmission line from a fire receiving unit, and there is a repeater with a test function as one of the terminal devices, and a sensor line from the repeater with the test function In a fire alarm facility in which one or more sensors with an automatic test function are connected to each other, and the fire receiving unit individually monitors and controls each terminal device, the fire receiving unit is configured to perform the test function according to an address on the transmission line. A test input means for designating the sensor with automatic test function by a branch number on the sensor line, and the address and the branch number are designated based on an input to the test input means. A test control means for transmitting a test control command to the transmission line, and the repeater with a test function receives the test control command and the designated address is its own address. Branch number A test relay means for outputting a designated test operation command to the sensor line, wherein the sensor with the test function receives the test operation command and the designated branch number is its own branch number; Further, it is characterized in that it is provided with a test operating means that is in an operating state.
[0012]
The test operation means of the sensor with the test function sends out a fire signal or turns on a fire indicator light by setting the sensor line to low impedance.
[0013]
Then, the fire receiving unit includes a restoration input means for designating a repeater with a test function by an address on the transmission line, and a restoration control command for designating the address based on an input to the restoration input means. A recovery control means for transmitting to the recovery line, wherein the repeater with a test function receives the recovery control command and performs a recovery operation on the sensor line when the designated address is its own address. The sensor having the relay function and having the test function is restored when the sensor line is restored.
[0014]
This recovery input means automatically designates the address input to the test input means when receiving a fire signal from another terminal device during the test operation after input to the test input means. .
[0015]
Furthermore, the fire receiving unit transmits a call command to each terminal device via a transmission line, and as a response to the call command, an interrupt response signal via a transmission signal from only the terminal device having a state change, or A test function comprising a status change monitoring means for identifying a terminal device having a status change based on a status response signal sent from each terminal device via the transmission line and being received by the fire receiving unit The attached repeater sends out an interrupt response signal or a status response signal for the call command when receiving a fire signal of the sensor with a test function via the sensor line.
[0016]
Further, the present invention provides a fire alarm system in which a plurality of terminal devices are connected to one transmission line from the fire receiving unit, and the fire receiving unit individually monitors and controls each terminal device. Recovery input means for specifying the terminal device by an address on the transmission line; and recovery control means for transmitting a recovery control command for specifying the address to the transmission line based on an input to the recovery input means; The terminal device includes recovery means for performing a recovery operation when the address specified by receiving the recovery control command is its own address, and the terminal device is configured to perform the recovery control command according to the recovery control command. It will be restored.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic system configuration diagram of a fire alarm facility according to an embodiment of the present invention.
[0018]
In FIG. 1, a fire receiver 10, a repeater 20 with a test function connected to the fire receiver 10 through a transmission line L1, and a plurality of automatic units connected to the repeater 20 with a test function through a sensor line L2. A sensor with a test function (hereinafter abbreviated as AT sensor) 30 is shown. The fire receiver 10 includes other terminal devices such as a fire detector that transmits state information through the transmission line L1 via the transmission line L1 different from the AT sensor 30. Multiple connected.
[0019]
In FIG. 1, the fire receiver 10 includes a control unit 11, a display operation unit 12, a storage unit 13, and a transmission / reception unit 14. Although not described in detail, the control unit 11 includes a CPU, a timer, and the like, the display operation unit 12 includes a display device such as an LCD and various switches, and the storage unit 13 is connected to a terminal device. Including database DB.
[0020]
Further, in FIG. 1, the repeater 20 includes a control unit 21, a transmission / reception unit 22, a signal detection unit 23, and a signal transmission unit 24. Although not described in detail, the control unit 21 includes a CPU, a timer, and the like. The transmission / reception unit 22 is connected to the fire receiver 10 via the transmission line L1, and the signal detection unit 23 and the signal transmission unit 24 are connected to the plurality of AT detectors 30 via the sensor line L2. ing.
[0021]
The AT sensor 30 is connected to the sensor line L2 in combination with a general type sensor (on / off type) (not shown). The AT sensor 30 is a code that uses a pulse for transmitting test information. Signal transmission using signals is performed. Note that the fire signal from the AT sensor 30 is an on / off signal in the same manner as a general sensor (not shown), and is detected by the signal detector 23 of the repeater 20 with a test function. In other words, the fire signal from the AT sensor 30 performs a so-called switching operation instead of signal transmission, and puts the sensor line L2 in a low impedance state.
[0022]
FIG. 2 is a diagram illustrating a configuration example of the database DB provided in the fire receiver 10.
[0023]
In FIG. 2, the database DB is configured to include an address 131, a terminal name 132, a message 133, and a branch number 134. In addition to these items, individual terminal devices such as interlocking settings, sensitivity settings, storage presence / absence, etc. You can set up the necessary data. The address 131 is a number such as 001, 002,... Individually assigned to a terminal device such as the repeater 20 with a test function connected to the transmission line L1. The terminal name 132 is actually set to a simple code in order to identify the model used as the terminal device of the monitoring device and the controlled device. In the message 133, a character string is set to represent an installation location such as “1st floor, 1st laboratory”, and the maximum length is 16 characters, for example.
[0024]
Branch number 134 indicates the presence or absence of the AT sensor 30 connected to the sensor line L2 when the terminal device is the repeater 20 with the test function, and when the system configuration shown in FIG. The repeater 20 detects the presence or absence of a response for each branch number, the fire receiver 10 captures the result, and the presence or absence of the AT sensor 30 for each branch number 134 is set in the database DB.
[0025]
By using such a database DB, the display contents on the display operation unit 12 as shown in FIG. FIG. 3 shows an example of a display screen in the display operation unit 12. On the left side of the uppermost stage d1, the address 131 is “050” and the terminal name is “Repeater” (the repeater 20 with the test function is “Sensor”). Therefore, “1st floor, 1st laboratory” is displayed as the message 133, and “04” is displayed as the branch number 134 to the address 131. As a result, among the sensors connected to the repeater 20 with the test function, the AT sensor 30 in which the output value abnormality has occurred can be identified.
[0026]
Note that “1” indicated by a hyphen before “050” in the address 131 distinguishes the transmission line L1 system, and indicates which system is used when a plurality of transmission lines L1 are installed. It is something to distinguish.
[0027]
In FIG. 3, the uppermost level d1 is an area for displaying information on fire (including information on fire detectors), and the second level d2 is information on information other than fire (information on smoke control devices, district sound devices, etc.). ) And the third stage d3 is an area for displaying information related to a gas leak alarm. As described above, the status information of the terminal device related to the fire alarm facility is displayed by being distinguished in any one of the uppermost level d1, the second level d2, and the third level d3.
[0028]
In addition, each terminal device connected to the transmission line L1 like the repeater 20 with the test function in FIG. 1 is assigned an address determined by a hexadecimal number of 2 digits sequentially for each terminal device, although not shown. Yes. That is, addresses such as 00h, 01h, 02h,..., FEh are assigned to each terminal device. However, in the following description, the address may be expressed by a decimal number for convenience. This address corresponds to the item on the database DB, the address 131.
[0029]
The terminal devices to which the addresses 00h to FEh are assigned are divided into 16 groups G0 to G15, and in principle, 16 terminal devices can belong to each group. That is, in principle, a maximum of 255 terminal devices can be connected to one transmission line L1, and each address is represented by 8 bits in the transmission code.
[0030]
FIG. 4 is a diagram showing the address of the terminal device in the above embodiment by an 8-bit code. FIGS. 4 (1) and 4 (2) show the 10th and 255th addresses in decimal numbers, respectively. .
[0031]
As shown in FIG. 4, the address of each binary code of each terminal device is divided into upper 4 bits (hereinafter referred to as upper digits) and lower 4 bits (hereinafter referred to as lower digits). Represents a group number starting from 0, and a lower digit represents a terminal device number in the group starting from 0. That is, paying attention to the 10th terminal device in FIG. 4A, the address code is “000010001” in binary (decimal “9”), and the upper digit of the address code is “0000”. (0h) Since the 10th terminal device belongs to the 0th group (G0) and its lower digit is “1001” (9h), it indicates that the terminal device number in the group corresponds to 9. “0Ah”, which is a combination of the upper digit and the lower digit, indicates the address 9 that is the tenth starting from the address 0 as the order of the terminal devices as viewed from the entire equipment.
[0032]
Also, focusing on the 255th terminal device corresponding to the address 254 according to FIG. 4B, the binary address code is “11111110” and the upper digit is “1111” (Fh), 255. The terminal device belongs to the fifteenth group (G15) and its lower digit is “1110” (Eh), which indicates that the terminal device number in that group corresponds to 15, and these upper digits and “FEh” combined with the lower digits indicates the 255th address 254 (decimal number) as the order of the terminal devices viewed from the entire facility.
[0033]
That is, the address of each terminal device is the entire 8-bit code, indicating the address of the entire equipment, and simultaneously, the group number is indicated by the upper digit of the 8-bit code and the terminal device in the group is indicated by the lower digit of the 8-bit code. Numbers are shown.
[0034]
In this way, an address represented by a plurality of digits is assigned to each of a plurality of terminal devices, and the group number is represented by a specific digit in the address, so the group number is common in “point polling” A plurality of terminal devices can be called simultaneously. In addition, since each of the plurality of terminal devices having the called group number has a different terminal device number in the group, a response timing can be assigned to each terminal device.
[0035]
FIG. 5 is a time chart showing the operation of point polling in the above embodiment, and point polling is composed of a “group information collection frame” and a “transmitter detection frame”.
[0036]
The “group information collection frame” is a frame that the fire receiver 10 calls for each group grouped as described above, instead of polling each terminal device individually. Each terminal device belonging to the called group sequentially returns data requested by point polling such as status information or type information ID to the fire receiver 10 at the response timing assigned to each terminal device.
[0037]
That is, by the point polling, a plurality of terminal devices are divided into a plurality of groups, the fire receiver 10 calls for each group, and status information is obtained from a plurality of terminal devices belonging to a predetermined group among the plurality of groups. The fire receiver 10 receives in a time division manner. According to this method, when there are a large number of terminal devices belonging to one group, it is possible to quickly detect a terminal device having a state change.
[0038]
Here, “status information” is the physical quantity data of the detected fire phenomenon when the terminal device is an analog fire detector, and for the monitoring of general type detectors when it is a normal repeater Data indicating a fire signal or the like when devices are connected, and data indicating an operating state of these devices when a controlled device such as a smoke prevention device is connected. Further, in the case of the repeater 20 with the test function, the result of collecting information from the general type sensor on the sensor line L2 or the fire signal from the AT sensor 30 or the AT sensor on the sensor line L2. It is data indicating the presence or absence of an abnormal signal.
[0039]
The “transmitter detection frame” constituting the point polling is a frame provided for quickly collecting operation information because a transmitter (not shown) is manually operated and has high reliability. Therefore, as shown in FIG. 5, the transmitter detection frame can respond to all transmitters connected to the transmission line L1 every time point polling is executed once for one group. If there is a transmitter that is informing, the transmitter returns its address to the fire receiver 10 in a time slot designated by the transmitter in response to a call by point polling.
[0040]
Note that “system polling” in FIG. 5 is for the fire receiver 10 to transmit a predetermined control command to all terminal devices to control all terminal devices. Here, the control command that the fire receiver 10 performs for all terminal devices using system polling is, for example, a fire recovery command (a command to restore all terminal devices to a normal monitoring state), a storage recovery command, (A command to restore terminal devices such as fire detectors and repeaters that have sent a fire signal to perform an accumulation operation to determine whether the fire condition is continuing), district sound stop command (a district bell that is ringing) Command to stop the sound device.
[0041]
In addition, “selecting” in FIG. 5 designates an address for an individual terminal device and transmits a predetermined control command to control the terminal device. This is an operation of collecting request information to a specific terminal device and individually collecting status information and the like from the terminal device.
[0042]
A transmission frame time chart in FIG. 5 will be described.
[0043]
Point polling is composed of a “group information collection frame” and a “transmitter detection frame”. The “group information collection frame” is a “receiver field” in which the receiver 10 calls a terminal device, followed by transmission. The “first waiting field WF1” that is not performed and the “terminal device field” in which the called terminal device performs signal transmission, and the “transmitter detection frame” includes the receiver 10 and a transmitter (not shown). Are composed of a “transmitter field” that performs signal transmission between them and a “second waiting field WF2” that is not transmitted subsequently.
[0044]
Here, in the terminal device field, the 16 terminal devices belonging to the group that received the call sequentially return data at the response timing assigned to each terminal device based on the terminal device number in the group.
[0045]
When one point polling is completed, the fire receiver 10 executes point polling for designating the next group, and repeats this to perform point polling for all groups, so that all terminal devices Status information or type information ID can be collected. Further, when the point polling for the final group is completed, the point polling is executed again from the first group in principle, and the collection of status information and the like is continued.
[0046]
The signal above the horizontal line in FIG. 5 is a signal transmitted from the fire receiver 10, and the signal below the horizontal line is a signal transmitted from the terminal device. The address AD, commands CM1, CM2 and primary sum check code PS transmitted from the fire receiver 10, the return data D1 returned from the terminal device, the secondary sum check code SS, its own address DA, The codes of the return data D1 and D2 will be described. Here, each code is composed of 10 bits in an 8-bit data area to which a start bit and a stop bit are added.
[0047]
First, the address AD is a data area for designating an address of a terminal device from 00h to FEh represented by a 2-digit hexadecimal number. When a normal address is indicated, the address AD is a selecting operation, In the case of an address, here FFh, it indicates point polling or system polling.
[0048]
The command CM1 indicates the type of polling being performed when the address AD is FFh. For example, when the command CM1 is 0Xh, it indicates a point polling operation, and when it is FXh, it indicates a system polling operation. Here, X is from 0 to F (hexadecimal), and if the command CM1 is 00h, it indicates point polling for returning status information, and if 01h, it indicates type information ID (terminal device model etc.). ID point polling to return a code). If the command CM1 is F0h, it indicates a fire recovery command by system polling, if it is F1h, it indicates a storage recovery command, or if it is F2h, it indicates a district sound stop command.
[0049]
In the case of selecting, the command CM1 indicates its contents. For example, 01h indicates a status information return command, 02h indicates a fire test command, 03h or 04h indicates a confirmation lamp lighting command or This indicates a confirmation lamp extinction control command or the like. Further, in the case of extended selection, the selection command CM1 is set to 71h, for example, to indicate extended selection and to indicate a status information return command regarding an abnormal state.
[0050]
The command CM2 is mainly used in the case of point polling, and indicates a group to which predetermined information should be returned by the lower digits of the command CM2. For example, the command CM2 is represented by 0Xh, and X represents the group number as described above.
[0051]
The primary sum check code PS is a code for the terminal device to check whether the transmission from the fire receiver 10 is normally performed, and is obtained by a predetermined calculation.
[0052]
On the other hand, in the case of point polling, the data returned from a plurality of terminal devices includes the return data D1 as status information or type information ID, and at the same time, a secondary sum check code SS is transmitted as a result of a predetermined calculation. In the case of selecting, the address DA is the address of the terminal device that transmits the data, and the return data D1 and D2 are status information, type information ID, and the like.
[0053]
Next, an operation related to polling on the transmission line L1 in the embodiment will be described. FIG. 6 is a flowchart showing the transmission operation of the fire receiver 10 in the embodiment.
[0054]
First, after starting up by turning on the power, initial setting is performed (S1). For example, it is confirmed that the models registered as the database DB for all addresses match the models actually installed. Actual monitoring and control such as status adjustment operation to be confirmed and extended selecting operation to collect the branch number of the AT sensor 30 connected to the sensor line L2 when there is a repeater 20 with a test function. Perform actions that should be set and confirmed before doing.
[0055]
Then, it is determined whether or not there is a selecting command based on an operator's terminal device control input from the display operation unit 12 (S2). If there is no selecting command, it is determined whether or not there is an extended selecting command set as described later. (S7) If there is no extended selecting command, it is determined whether there is a system polling command such as a recovery input from the display operation unit 12 (S3). If there is no system polling command, the calling group is identified and point Polling is performed (S4). Thereafter, the process returns to step S2, and the above operations (S2 to S4) are repeated, and point polling (S4) is performed by sequentially changing groups.
[0056]
Information collection from each terminal device in this point polling (S4) is always collecting state information, ID point polling is performed at a predetermined timing, for example, once every five times, and the type of each terminal device is collected. The information ID is returned to confirm the installation state of the terminal device.
[0057]
In point polling (S4), when it is determined that there is a state change in any of the terminal devices as a result of collecting the state information, a notification such as an audio alarm or information display is made according to the state of the terminal device. Perform the action. Here, the presence or absence of a state change due to point polling is performed by storing return data D1 and D2 indicating the state information returned from individual terminal devices as shown in the time chart of FIG. The presence / absence of a change is discriminated based on the comparison. When the terminal device is an analog fire detector, the return data D1 and D2 are analog data related to the detected smoke and temperature levels, and the state is determined based on the result of the fire determination process.
[0058]
Further, in this point polling (S4), when the terminal device having the state change is the repeater 20 with the test function as a result of collecting the state information, and the state change is determined to be abnormal, the test function An extended selecting command is set in order to return status information regarding all addresses to which the AT sensor 30 is set from the attached repeater 20.
[0059]
Thereafter, when returning to step S2, there is no selecting instruction (S2), and subsequently, in the determination of the presence or absence of the extended selecting instruction, the extended selecting instruction is present (S7), and an abnormal state with respect to the repeater 20 with the test function. Extended selection based on is performed (S8).
[0060]
Here, the difference between extended selecting and selecting will be described with reference to FIG. In FIG. 7, FIG. 7A is a selection time chart similar to FIG. 5, and FIG. 7B is an extended selection time chart.
[0061]
As shown in FIG. 7A as an example, the time of one transmission frame in selecting is about 17 ms for the receiver field, about 4 ms for the waiting field, about 17 ms for the terminal equipment field, and about 13 seconds for the waiting time. About 50 ms.
[0062]
On the other hand, as shown in FIG. 7B, for example, the time of one transmission frame in extended selecting is about 17 ms for the receiver field, about 4 ms for the waiting field, about 75 ms for the terminal equipment field, and the waiting time. The total is about 108 ms in about 13 seconds. As is clear from the comparison, only the data area of the terminal device field is expanded by about 8 times, and the fire receiver 10 receives the expanded data area at the same time as transmitting the signal of the extended selection. By taking the timing and using extended selecting, it is possible to transmit a large amount of data that cannot be transmitted at a time by normal selecting.
[0063]
In selecting, in the data D1, the command CM1 in the receiver field is returned, and the status information of the terminal device is returned in the data D2. On the other hand, in the extended selecting, the command CM1 in the receiver field is returned to the data D1 in the data area from the data D1 to D16, and the status of the AT sensor 30 from the serial number 1 in the data D2 to D6. Information regarding output abnormalities up to 30 is assigned and returned as data of data numbers D8 to D12 and no response from serial numbers 1 to 30 as the state of the AT sensor 30. The data D7 and D13 to D16 are not used here. Such a data structure can be arbitrarily set according to information.
[0064]
Thus, only when the repeater 20 with a test function shows an abnormal state, the time for the control operation of each terminal device by normal selecting can be shortened by using extended selecting.
[0065]
Next, signal transmission between the test function repeater 20 and the AT sensor 30 via the sensor line L2 will be described.
[0066]
FIG. 8 is a waveform diagram showing an example of signal transmission on the sensor line L2.
[0067]
8, “parent” is the repeater 20 in FIG. 1, and “child” is the AT sensor 30 in FIG. Individual addresses are assigned to a plurality of AT sensors 30 provided in combination with general-type sensors for each sensor line L2, and the repeater 20 groups the AT sensors 30 based on the addresses. The AT sensor 30 data is collected in units of 15 addresses, and a start pulse, a reference pulse, and a command CM are transmitted.
[0068]
The start pulse is a pulse for causing the AT sensor 30 to recognize the start of transmission, and the repeater 20 transmits a low pulse having a pulse width of 2 ms. Based on this pulse, the microcomputer (not shown) of the AT sensor 30 starts up from the sleep mode. The microcomputer (not shown) enters the sleep mode after a necessary operation such as a fire detection operation, and a predetermined time is required to start from the sleep mode and operate stably.
[0069]
The reference pulse is a pulse having a basic length of a transmission pulse interval, and as shown in FIG. 8, at an interval of a falling edge (level change timing from high to low), which is 4 ms here. Yes.
[0070]
The command CM is a control command to the AT sensor 30, and indicates an 8-bit (b7 to b0) code with four pulse intervals, and determines the interval for each pulse and replaces it with a signal transmission code.
[0071]
In this way, a 2-bit code is indicated by one falling edge interval, the edge interval is 00b for 4ms, 01b for 6ms, 10b for 8ms, and 11b for 10ms. A command CM such as polling 1 that collects data and polling 2 that collects data of addresses 16 to 30 is formed. Then, the AT sensor 30 analyzes the command CM and recognizes the transmission content. Although not described in detail, the AT sensor 30 is designated and used as a control command such as a test command, and is used for a sleep start command for setting all the AT sensors 30 to a sleep mode.
[0072]
Slots 0 to 14 determine the timing of transmission from the AT sensor 30 to the repeater 20. The AT sensor 30 determines the slot position based on its own address according to polling 1 or polling 2 (FIG. 9 (a). )) And a pulse (see FIG. 9B) indicating a code indicating normality or abnormality is transmitted to the corresponding slot. That is, in each AT sensor 30, if the function is normal as a result of the test function, a pulse width of 2 ms is returned, and if abnormal, a pulse width of 4 ms is returned.
[0073]
By using such signal transmission, the repeater 20 transmits the control contents of polling 1 or polling 2 in the control command CM, so that a maximum of 30 AT detectors 30 connected to the sensor line L2 are transmitted. Normal or abnormal information can be collected individually. Here, regarding the presence / absence of a pulse in each slot, when a pulse as shown in FIG. 9B is not returned, the repeater 20 determines that the AT sensor 30 in that slot is not responding, and abnormal It is determined that there is no response in distinction from the pulse return indicating. In this non-response state, although there is a failure of the AT sensor 30, there are many cases of dropping (including removal) from the sensor line L2.
[0074]
Here, the number of AT detectors 30 that can be addressed to one sensor line L2 is limited to 30. However, the number is not limited to this number, and it is optional depending on the number of slots and the number of polling 1 or 2. Can be set to
[0075]
In this way, the repeater 20 with the test function detects the fire signal from the AT sensor 30 through the switching operation like the conventional repeater, including the general type sensor, and the sensor line. The automatic test results of each AT sensor 30 and the presence / absence of connection can be collected by signal transmission in L2, and the repeater 20 recognizes the AT sensor 30 that has become abnormal or no response.
[0076]
Therefore, the information of the AT sensor 30 in the sensor line L2 received by the repeater 20 can be recognized by the repeater 20 by the switching operation simultaneously with the detection when the fire is detected, and the function abnormality of the AT sensor 30 can be recognized. At the time of detection, the signal transmission can be stable because it is not as urgent as at the time of fire detection. For example, the automatic test result and connection presence / absence collection operation of each AT sensor 30 by the tester-equipped repeater 20 may be periodically performed at predetermined time intervals of 3 minutes based on the operation of the tester-equipped repeater 20. .
[0077]
The repeater 20 is provided with a plurality of sensor lines L2, recognizes a fire signal from a fire sensor including the AT sensor 30 for each sensor line L2, and addresses the branches of each AT sensor 30. Is also recognized for each sensor line L2. In addition, when a plurality of sensor lines L2 are provided in one repeater 20 here, an address as a terminal device that responds to a polling operation with the fire receiver 10 is set for each sensor line L2. Thus, on the transmission line L1, one repeater 20 has a plurality of addresses and responds to each address.
[0078]
Next, a fire test operation for designating each AT sensor in the system according to this embodiment will be described.
[0079]
First, the test control operation in the fire test will be described based on the operation flow of FIG.
[0080]
The worker uses the display operation unit 12 of the fire receiver 10 to specify the address for identifying the repeater 20 with the test function and the branch number for identifying the AT sensor 30 connected to the sensor line L2 of the repeater 20. And a fire test is input (S21).
[0081]
The control unit 11 of the fire receiver 10 transmits fire test selecting to the transmission line L1 via the transmission / reception unit 14 from the input information from the display operation unit 12 (S22). Here, in the fire test selecting, in the flowchart of FIG. 6, there is a selecting command in step S2 by the fire test input, and the selecting operation in step S6 is performed. The signal content of the receiver field to be transmitted (see FIG. 7A) is the address of the repeater 20 with the test function to which the address AD is input, the command CM1 is 02h indicating a fire test command, and the command CM2 is AT The branch number of the sensor 30 and their primary sum check code PS.
[0082]
The repeater 20 with the test function that has received this fire test selecting via the transmission / reception unit 22 (S23), the control unit 21 responds when the address AD of the signal content matches the preset address. A signal is returned (S24). This response signal is a terminal device field in selecting, and its contents are that the address DA is its own address, the return data D1 and D2 are the receiver field commands CM1 and CM2, and the secondary sum check code SS is transmitted. .
[0083]
And the control part 21 of the repeater 20 with a test function sends out the fire test command which designates the branch number received via the signal transmission part 24 to the sensor line L2 (S25). This fire test command indicates the branch number designated by the earlier bits (b7 to b3) in the command CM in the signal waveform on the sensor line L2 (see FIG. 8), and the fire test is performed by the remaining bits. Indicates the control content of the instruction.
[0084]
The AT sensor 30 that has detected the signal waveform on the sensor line L2 confirms that it matches the preset branch number of its own, operates a switching circuit (not shown), and switches the sensor line L2. The fire signal is output as a low impedance state. At the same time, a fire indicator (not shown) is turned on to indicate that a fire signal is being sent out as an appearance.
[0085]
When the signal detector 23 detects the low impedance state of the sensor line L2 by the signal detector 23, the controller 21 of the tester-equipped repeater 20 stores and holds the fire signal in a storage unit (not shown). (S27). If the fire detection signal cannot be detected by the signal detector 23 (S26), the process returns to step S25 to re-send the signal waveform of the fire test command, and if the fire signal cannot be obtained even after performing this retry three times. (S28) The control unit 21 stores and holds an abnormal signal in a storage unit (not shown), assuming that the AT sensor 30 of the designated branch number is defective (S29).
[0086]
In this manner, on the panel of the fire receiver 10, the operator designates the address of the repeater 20 with the test function and the branch number of the AT sensor 30 by using the display operation unit 12, so that the sensor line L 2 is connected. It is possible to perform a test operation on the connected AT sensor 30, and on the site where the branch number AT sensor 30 is installed by turning on a fire indicator (not shown). Can be confirmed.
[0087]
Then, the repeater 20 with the test function that holds the fire signal or the abnormality signal responds to a call command by the point polling operation of the fire receiver 10 via the transmission line L1, and sends a fire signal to the fire receiver 10. Or an abnormal signal is transmitted. That is, among the point polling operations in step S4 in the flowchart of FIG. 6, the point polling for the group to which the repeater with test function 20 holding the fire signal or the abnormality signal belongs is transmitted from the fire receiver 10 to the transmission line L1. At that time, the repeater 20 with the test function returns a fire signal or an abnormal signal as return data D1 at its own response timing in the terminal device field of the point polling frame. When this response signal is received and displayed on the display operation unit 12 of the fire receiver 10, the operator can confirm the test result.
[0088]
When such a fire test is executed, the AT sensor 30 on the designated sensor line L2 is maintained in a state where a fire signal is output. Even if a plurality of AT sensors 30 are connected on the sensor line L2, if any AT sensor 30 outputs a fire signal, the other AT sensors 30 send a fire signal. Before that, it is not possible to even create a signal waveform on the sensor line L2. Therefore, the AT sensor 30 outputting the fire signal must be restored and returned to the normal monitoring state.
[0089]
Next, the test end operation in the fire test will be described based on the operation flow of FIG.
[0090]
The worker uses the display operation unit 12 of the fire receiver 10 to input a fire test and confirms the result, and then inputs a test end to restore the fire signal (S41).
[0091]
The control unit 11 of the fire receiver 10 reads the address and branch number held at the time of the fire test input by the test end input from the display operation unit 12, and performs fire recovery selecting via the transmission / reception unit 14 based on the read address and branch number. The data is transmitted to the transmission line L1 (S42). Here, the restoration selecting is the same as the fire test selecting, in the flowchart of FIG. 6, there is a selecting command in step S2 by the above fire test input, and the selecting operation in step S6 is performed. The signal content of the receiver field to be transmitted (see FIG. 7A) is the address of the repeater 20 with the test function that the address AD restores, the command CM1 is a fire restoration command, the command CM2 is not used, and These are the primary sum check codes PS.
[0092]
The repeater 20 with a test function that has received this fire recovery selecting via the transmitter / receiver 22 (S43), the control unit 21 responds when the address AD of the signal content matches the preset address. A signal is returned (S44). This response signal is the same as in the case of the fire test selecting, but here the address DA is the self address, the return data D1 is the ID code, D2 is unused, and these secondary sum check codes SS are transmitted.
[0093]
And control part 21 of repeater 20 with a test function performs restoration operation (S45). This recovery operation clears the fire signal or abnormal signal held by the control unit 21 and also turns off the power for a predetermined time as a recovery command to the sensor line L2 via the signal transmission unit 24 (low state here). (S25).
[0094]
The AT sensor 30 that has detected the power-off on the sensor line L2 returns to the normal monitoring state as a recovery operation, and thus restores the switching circuit when operating. At the same time, turn off the fire indicator. Here, since it is not necessary to specify each AT sensor 30 for the recovery command output from the repeater 20 with the test function, it is sufficient to recover each sensor line L2. From this, the fire receiver 10 The branch number data is not necessary for the fire restoration selecting to be sent.
[0095]
When the AT detectors 30 are sequentially subjected to a fire test, the worker repeatedly causes the AT detector 30 to perform a fire test operation one after another by repeating a fire test input and a test end input designating the AT detector 30. be able to.
[0096]
In addition, since this fire recovery selecting can individually restore the fire signal, an actual fire occurs during the fire test work by the worker, and the fire signal is sent from the terminal equipment other than the designated repeater 20 with the test function. When received, only fire signals based on fire test operations can be restored. That is, in FIG. 11, when the fire receiver 10 receives a fire signal by point polling (S51), if the fire test selecting has been sent out (S52), as in the case of the test end input ( S41), including fire restoration selecting (S42), so-called fire operation including fire display and fire notification is performed (S53). Since the operation of the repeater 20 with the test function after the transmission of the fire recovery selecting is the same as the case of the test end input, the description thereof is omitted.
[0097]
If conventional fire recovery system polling is used instead of fire recovery selecting, not only the AT detector 30 that is reporting the test, but also the terminal devices such as the fire detector that detects the actual fire are restored. As a result, the fire signal of the received actual fire is cleared. On the other hand, when using fire restoration selecting, it is possible to identify and restore the fire signal of the test report.
[0098]
Since the fire signal of the AT sensor 30 by the fire test cannot be distinguished from the fire signal of the actual fire, and only the presence or absence of the signal by the so-called switching operation is known, the fire receiver 10 holds the object of the fire test. Unnecessary fire information can be cleared by sending a fire restoration selecting to the AT sensor 30 of the retained information.
[0099]
As described above, according to the present invention, a plurality of terminal devices are connected to one transmission line from the fire receiving unit, and there is a repeater with a test function as one of the terminal devices. In a fire alarm facility in which one or more detectors with an automatic test function are connected to the sensor line from and the fire receiving unit individually monitors and controls each terminal device, the fire receiving unit is connected to the transmission line. A test input means for designating the repeater with a test function by an address, the sensor with an automatic test function by a branch number on the sensor line, and the address and the input based on an input to the test input means A test control means for transmitting a test control command for designating a branch number to the transmission line, and the repeater with a test function receives the test control command, and the address designated is a self address. If there And a test relay means for outputting a test operation command designating the branch number to the sensor line, wherein the sensor with the test function receives the test operation command and the specified branch number is self-addressed. By providing a test activation means that is in the activated state when the number of the branch is, the worker specifies a sensor with an automatic test function on the sensor line and inputs a test to the fire receiver. It is possible.
[0100]
The test operation means of the sensor with the test function sends a fire signal by setting the sensor line to a low impedance, and outputs the same signal as the fire signal that has detected an actual fire. A repeater or the like can be handled in the same way as a fire signal of an actual fire. In addition, since the fire indicator light is turned on, the sensor with automatic test of the branch number of the designated address can be confirmed on site.
[0101]
Then, the fire receiving unit includes a restoration input means for designating a repeater with a test function by an address on the transmission line, and a restoration control command for designating the address based on an input to the restoration input means. A recovery control means for transmitting to the recovery line, wherein the repeater with a test function receives the recovery control command and performs a recovery operation on the sensor line when the designated address is its own address. The detector equipped with a relay means is restored by the restoration operation of the sensor line, causes the restoration operation to be performed within the necessary range, and handles unnecessary fire information, display on the display unit, etc. You can clear it.
[0102]
This recovery input means automatically designates the address input to the test input means when receiving a fire signal from another terminal device during the test operation after input to the test input means, When an actual fire occurs, the fire signal of the fire test can be cleared and only the fire signal of the actual fire can be automatically left.
[0103]
Furthermore, the fire receiving unit transmits a call command to each terminal device via a transmission line, and as a response to the call command, an interrupt response signal via a transmission signal from only the terminal device having a state change, or A test function comprising a status change monitoring means for identifying a terminal device having a status change based on a status response signal sent from each terminal device via the transmission line and being received by the fire receiving unit When the fire relay of the sensor with a test function receives the fire signal of the test function via the sensor line, the fire receiving unit sends out an interrupt response signal or a status response signal to the individual call signals. Can be identified.
[0104]
Further, the present invention provides a fire alarm system in which a plurality of terminal devices are connected to one transmission line from the fire receiving unit, and the fire receiving unit individually monitors and controls each terminal device. Recovery input means for specifying the terminal device by an address on the transmission line; and recovery control means for transmitting a recovery control command for specifying the address to the transmission line based on an input to the recovery input means; The terminal device includes recovery means for performing a recovery operation when the address specified by receiving the recovery control command is its own address, and the terminal device is configured to perform the recovery control command according to the recovery control command. It is possible to recover and perform a recovery operation within the necessary range, and clear the handling of unnecessary fire information and display on the display unit.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram showing an embodiment of the present invention.
2 is a configuration diagram of a database provided in the fire receiver of FIG. 1. FIG.
FIG. 3 is a screen configuration diagram showing display contents in the fire receiver of FIG. 1;
FIG. 4 is an explanatory diagram showing a configuration of addresses set in the repeater of FIG. 1;
FIG. 5 is a time chart showing a polling operation in FIG. 1;
6 is a flowchart showing a transmission operation of the fire receiver of FIG.
FIG. 7 is a time chart showing extended selecting in FIG. 1;
8 is a time chart showing signal transmission on the sensor line of FIG. 1. FIG.
FIG. 9 is an explanatory diagram of timing and pulses in FIG.
FIG. 10 is an operation flow diagram regarding fire test selecting in the system of FIG. 1;
FIG. 11 is an operation flow diagram regarding fire restoration selecting in the system of FIG. 1;
[Explanation of symbols]
10 Fire receiver
20 Repeater with test function
30 Sensor with test function

Claims (7)

A plurality of terminal devices are connected to one transmission line from the fire receiving unit, and there is a repeater with a test function as one of the terminal devices, and one or more sensor lines from the repeater with the test function are connected to the sensor line. In a fire alarm facility in which a detector with an automatic test function is connected and the fire receiving unit monitors and controls each terminal device individually,
The fire receiving unit, the test input means for designating the repeater with a test function by an address on the transmission line, and the sensor with an automatic test function by a branch number on the sensor line;
Test control means for transmitting a test control command for designating the address and the branch number to the transmission line based on an input to the test input means;
The repeater with a test function receives a test control command and outputs a test operation command for designating the branch number to the sensor line when the designated address is its own address. With means,
The sensor with a test function includes a test operation unit that is activated when the branch number designated by receiving the test operation command is its own branch number. Facility. 2. The fire alarm system according to claim 1, wherein the test operation means of the sensor with a test function transmits a fire signal by setting the sensor line to a low impedance. 2. The fire alarm system according to claim 1, wherein the test operation means of the sensor with a test function turns on a fire indicator lamp. The fire receiving unit has a recovery input means for designating a repeater with a test function by an address on the transmission line,
A recovery control means for transmitting a recovery control command for designating the address to the transmission line based on an input to the recovery input means;
The repeater with a test function includes a recovery relay unit that performs a recovery operation on a sensor line when the address specified by receiving the recovery control command is its own address,
4. The fire alarm system according to claim 1, wherein the sensor with a test function is restored when the sensor line is restored. The recovery input means automatically designates an address input to the test input means when receiving a fire signal from another terminal device during a test operation after input to the test input means. Fire alarm equipment. The fire receiving unit transmits a call command to each terminal device via a transmission line, and as a response to the call command, an interrupt response signal via a transmission signal from only a terminal device having a state change, Based on the state response signal transmitted from the terminal device via the transmission line, and received by the fire reception unit, the device includes a state change monitoring unit that identifies the terminal device having a state change,
6. The fire notification according to claim 1, wherein the repeater with a test function sends out an interrupt response signal or a status response signal for the call command when receiving the fire signal of the sensor with the test function through the sensor line. Facility. In a fire alarm facility in which a plurality of terminal devices are connected to one transmission line from a fire receiving unit, and the fire receiving unit monitors and controls each terminal device individually,
The fire receiving unit is a recovery input means for designating the terminal device by an address on the transmission line;
A recovery control means for transmitting a recovery control command for designating the address to the transmission line based on an input to the recovery input means;
The terminal device includes recovery means for performing a recovery operation when the address specified by receiving the recovery control command is its own address, and the terminal device is recovered by the recovery control command. Features fire alarm equipment.

Images