JPH02201599A - Disaster prevention equipment - Google Patents

Abstract

PURPOSE:To judge the presence and absence of disconnection between a reception part and a terminal without fail by successively calling the plural terminals by the reception part, requesting to send specified information and receiving these specified information from the terminal. CONSTITUTION:Terminals T11-T44 are connected to a receiver RE as the reception part and the terminals T11-T44 are divided into four groups G1-G4. The respective terminals T11-T44 are fire sensors or repeaters and the fire sensors, etc., or equipments to be controlled are connected to these repeaters. Here, the reception part successively calls the plural terminals and requests to send the specified information. Then, the specified information are received from the terminal. Thus, the presence and absence of the disconnection between the reception part and terminal can be judged without fail.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transmission procedure performed between a terminal such as a fire detector or repeater in disaster prevention equipment and a receiving section such as a receiver or repeater.

[Background technology] In fire alarm equipment, it is necessary to promptly transmit predetermined information from terminals such as fire detectors and repeaters to receiving sections such as receivers and repeaters. There is a desire to shorten as much as possible the time required for a receiving unit to understand the status of a terminal.

In order to meet this demand, disaster prevention equipment that employs system polling, point polling, and selecting has been proposed.

In other words, terminals such as fire detectors and repeaters are connected to receiving parts such as receivers and repeaters, multiple terminals are divided into multiple groups, polling is performed for each group, and the group containing the terminal whose status has changed is polled. At the return timing, system polling is performed to respond to the receiving unit, polling is performed for each terminal in the group that responded to the receiving unit in the system polling, and at the return timing of the terminal whose status has changed, it responds to the receiving unit. Disaster prevention B@ has been proposed, which performs point polling, collects predetermined information from terminals that respond to the point polling, and/or selects to send control commands to specific terminals.

[Problem to be solved by the invention] In the disaster prevention equipment proposed in Section L, system polling,
Point polling is performed, and predetermined information is collected only from terminals that have responded, or control is performed only on specific terminals.

Therefore, as mentioned above, when grasping the terminal status, 11
If only shortening fl is pursued, there is a problem that it is not possible to monitor disconnection of the transmission line between the receiving section and each terminal.

[Means for Solving the Solution] The present invention divides a plurality of terminals into a plurality of groups, polls each group, and performs system polling in response to the L receiving section at the timing of returning a group having a terminal whose status has changed. and polling each terminal in the group that responded to the receiving unit, and at the timing of the return of the terminal whose status has changed, respond to the receiving unit and collect predetermined information from the terminal that responded to the receiving unit, and/or collect specified information from the terminal that responded to the receiving unit. When transmitting a control command to a terminal, the receiving section sequentially calls a plurality of terminals to request transmission of specific information, and receives the specific information from the terminal.

[Operation] In the present invention, since the receiving unit sequentially calls a plurality of terminals to request transmission of specific information and receives the specific information from the terminals, it is possible to ensure that there is no disconnection between the receiving unit and the terminals. can be judged.

[Embodiment] FIG. 1 is a diagram showing an example in which terminals are divided into groups in an embodiment of the present invention.

In this example, the terminal Tll-744 is connected to the receiver RE as an example of the receiving section, and the terminals 'rti to T44 are
Four groups Gl, G2. It is divided into G3 and G4. In the above embodiment, the number of terminals in one group is 4, but the number may be other than 4, and the terminals may be divided into groups other than 4.

Each of the terminals Tll to T44 is a fire detector (analog type, etc.) or a repeater, and this relay has monitoring equipment (fire detector, etc.) or controlled equipment (district bell, fire door, smoke prevention device, etc.). dampers, etc.) are connected.

The reception fiRE polls the terminals Tl1-T44 in the system polling, point polling, and selecting modes described below, and collects predetermined information from the predetermined terminals and controls the predetermined terminals.

Here, system polling does not poll each of the terminals Tll to T44 one by one.

In this polling, the terminals Tll to T44 are grouped into four groups, each group is polled, a return timing is given to each group, and a response is sent to the receiver RE at the return timing of the group including the terminal whose state has changed.

Point polling polls each terminal in the group only for the group that responded to the receiver RE in system polling, gives a return timing to each terminal, and responds to the received fiRE at the return timing of the terminal whose status has changed. This is polling.

Selecting receives M in point polling.
! 1. Collecting specified information from the terminal that responded to the RE,
A predetermined control command is transmitted to a terminal or any terminal that responds to the received fiRE in point polling.

Further, during the system polling, the receiver simultaneously sends a common command common to a plurality of terminals to a plurality of terminals. This common command includes, for example, a fire restoration command (an order to restore the terminals such as detectors and fire alarms that sent fire signals, and terminals such as repeaters that ring the district bell to a normal monitoring state) , Accumulation restoration command (instruction to restore terminals such as fire detectors and repeaters that sent out fire signals in order to carry out storage operation to determine whether the fire condition continues for a specified period of time), district sound suspension There are orders (orders to stop ringing district bells), etc.

Furthermore, when the receiver sequentially calls multiple terminals to request transmission of specific information and receives the specific information from the terminals, it is assumed that there is no disconnection between the receiver and the terminals. to decide. In addition, the type information is used as the above specific information, and the type information received by the receiver from the terminal is compared with the type information of the terminal registered in the receiver, and if the two types of information do not match, the corresponding Determine that the device type has changed.

FIG. 2 is a diagram showing an example of the operation of the above embodiment.

The operation proceeds from the upper left to the upper right of this figure 2, and from the right end, the operation proceeds to the left end of the 1st and 5th column, and the processing proceeds sequentially as described above. The upper part indicates the operation of the receiver RE, and the lower part of the horizontal line indicates the operation of the terminal (or group).

Further, in FIG. 2, a broken line frame indicates that the message was not returned at the return timing, and a thick line frame indicates that the message was returned at the return timing. In other words, the thick line frame indicates a terminal whose state has changed compared to immediately before the return timing (or a group including terminals whose state has changed).

First, at Pl in FIG. 2, the receiver RE performs system polling. In other words, the receiver RE sends an address 5PAD indicating system polling and a status information return command CMI to return status information to groups 01 to G4. Set the timing for returning status information to groups 01 to G.
4 in sequence. Each of groups 01 to G4 is
Only when the status of a terminal in its own group changes, it responds by returning status information etc. to the receiver RE at its own return timing. In the example shown in FIG. 2, since the state of terminal T23 has changed, only group G2 receives aRE.
respond to. This causes the receiver RE to
The state of any of the terminals T21 to T24 belonging to changes.
It can be understood that the receiver RE has status information to be sent to the receiver RE.

Next, at P2, point polling is performed, that is, reception 41! The RE sends the address CAD of the group to be polled and the status information return command CMI to the terminals belonging to the group. In the case of the above example, address CAD (2) and status information return command CMI are sent to terminals T21-T24. Then, the timing at which the status information is sent back is determined sequentially to the terminals T21 to T24. Each terminal receives status information, etc. at its own return timing only when the status of its own terminal has changed aRE
Reply by sending it back to . Since the state of terminal T23 has changed during the point polling, only terminal T23 responds to the receiver RE. This allows the receiver RE to understand that the state of the terminal T23 has changed and that the terminal T23 has state information that should be sent to the receiver RE.

Next, in P3, selecting is performed, that is, the receiver RE selects the address SA of the terminal that received the response signal.
D and a status information return command CMI are sent. In the above example, since a response signal was received from terminal T23, reception 4i
1RE sends out the terminal address SAD (23) and a status information return command CMI. On the other hand, terminal T2
3 sends its own address SAD (23) and the data DAC to be sent (for example, a fire signal) to the receiver RE.

When the receiver RE receives the data DA, it sets its own address S.
AD (23) and the received data DA are sent, terminal T23 receives the above data DA, terminal T23 compares the data DA sent immediately before with the data DA received at that time, and finds that both data match. Then, the terminal T23 sends the L data DA to the receiving terminal 41j1RE again. Reception fi
If the data DA received by the RE the first time and the data DA received the second time match, the RE recognizes that the data DA is indeed the data sent by the terminal T23.

The receiver RE then performs necessary processing based on the received data DA.

Suppose that as a result of determining the data DA received by the receiver RE through the above selection, it is determined that there is a fire.
In the above example, in which the 2nth controlled i-device is operated (for example, the district bell is rung) in P4, the receiving fiRE sends out the address SAD (n) of the terminal Tn and the ring command CM3.

Terminal Tn is then called by receiver RE and i'I! !
When the terminal Tn receives the ward bell ringing command CM3, it receives its own address SAD (n)! 8 The terminal Tn is called again from the receiver RE, and the same ringing command CM as before is sent back to the receiver RE for confirmation.
3 from reception @RE, the terminal Tn controls the ringing of the district bell for the first time, and also transmits the control status data D.
A and its own address SAD (n) are returned to the receiving ORH.

After this, the system returns to normal and repeats the system polling described above.

Next, common command processing will be explained.

At P6 in FIG. 2, when the operator inputs a fire recovery command, which is one of the common commands, into the receiver RE, the receiver R
E sends an address 5PAD indicating system polling and a fire recovery command CM4.

As a result, the monitoring terminal returns to the monitoring state, the control terminal stops controlling (for example, in the case of a district bell, it stops ringing), and the normal monitoring state is restored.

In the above example, a common command such as a fire restoration command is sent only once, but if it is sent multiple times (for example, 5 times) and the same common command is received a predetermined number of times (for example, 3 or more times),
It may be determined that a correct common command has been received, and the content of the common command may be executed, thereby preventing malfunctions due to transmission errors.

Note that in the above example, point polling and selecting are each executed twice, but this is to prevent erroneous transmission due to induced noise or the like.

Next, the operation of inspecting the main transmission line for disconnection will be explained.

At the POI in FIG. 2, system boring is performed once, and then selection is performed to check for disconnection in the main transmission line up to terminal 'T11.

In other words, the received fiRE is the address SAD of the terminal Tll.
(11) and a specific information return command CM2, the terminal Tll returns its own address SAD (11) and specific information (in this case, type information CL indicating the type of the terminal) to the receiver RE. When receiving the type information CL from the terminal Tll, the receiver RE determines that the main transmission line from the receiving @RE to the terminal Tll is not disconnected.

Then, after performing system polling once and confirming that there is no terminal whose status has changed, a disconnection test similar to the above is performed for terminal T12.In this way, for each terminal, the receiver RE A disconnection test is performed from the terminal to the terminal, and system polling is performed once at a time. In this system poll,
If any group responds, point polling is of course performed for that group and necessary selection is performed.

Type information CL includes monitoring repeater, control repeater,
There is information indicating monitoring and control repeaters, analog fire detectors, etc. In this way, when the receiver collects the type information as the specific information, the receiver can know whether the terminal is connected or not, and at the same time, know that the type of the terminal has been changed. In the above example, selection for disconnection determination is performed every time system boring is performed, so it is necessary to perform system boring 16 times to monitor all terminals Tl1-T44.

Note that disconnection determination may be performed every time system polling is performed a predetermined number of times, disconnection determination may be performed at predetermined time intervals, and selection of multiple terminals for disconnection detection may be performed at one time. Also, if disconnection determination selection is performed twice in succession for the same terminal, erroneous determinations due to induced noise can be prevented. Further, the specific information may be information other than type information, such as a specific code.

FIG. 3 is a block diagram showing an example of the receiver RE in the above embodiment and a connection example between the receiver RE and a repeater.

The receiver RE has one microprocessor MPU and one RA.
M11 to RAM19, ROMII to ROM13, and I
It has FII to IF13, a signal transmitting/receiving section TRX1, an operation section OP, and a display section Dr.

ROM II is a storage area for programs related to the flowcharts shown in FIGS.
This is a storage area for a terminal map table such as number m1 type within a group. The ROM 13 is a storage area for 5 interlocking control tables.

RAM II is a work area, RAM 12 is an area that stores the group number g of the group that sent the response signal during system polling, and RAM 13 is a storage area for the number n of the terminal that sent the response signal during point polling. It is.

Instead of the number n of the terminal that sent the response signal, the RAM 13 stores the group number g and the terminal number m in that group.
Alternatively, the terminal number n that sent the response signal may be determined based on the group number g and the terminal number m.

The RAM 14 is a storage area that stores the control contents performed during system polling, and the RAM 15 is an area that stores the terminal number to be controlled during serenoting and its control contents. The RAM 16 is a storage area for status information collected from the terminals T1 to Tn, the RAM 17 is a storage area for sent control instruction codes, and the RAM 18 is a storage area for the types of connected terminals. Note that at the time of initial setting, the terminal number and type stored in the ROM 12 are loaded, and thereafter, the contents are changed according to the type information collected by disconnection monitoring. RAM19
is a storage area of a terminal determined to be in a disconnection state by disconnection monitoring.

The signal transmitting/receiving unit TRXI is composed of a parallel-to-serial converter, a transmitting circuit, a receiving circuit, a serial-to-parallel converter, etc., and the operation unit OP includes:
Various switches, a numeric keypad, etc. are provided, and the display section DP is provided with various indicator lights, a CRT, etc.

FIG. 4 shows a specific example of the repeater Tl in the above embodiment, and
It is a block diagram showing an example of a sensor etc. connected to this repeater T1.

Note that the repeaters T2 to TN have the same configuration as the repeater Tl.

The repeater TI has a microprocessor MPU2 and a RAM2.
1-RAM23, ROM21, ROM22, IF21~
IF27, signal transmitting/receiving section TRX2, fire signal receiving circuit F
It has an SR1 disconnection monitoring circuit ELS, a test circuit TE, and an audio control circuit LAC1 terminal control circuit ERC1 terminal response circuit ERR.

The ROM 21 is a storage area for programs, etc. related to the flowcharts shown in FIGS. 11 to 14.
is a storage area for the group address to which the user belongs, self address, type, etc. Note that a dip switch or the like may be used instead of the ROM 22.

The RAM 21 is a work area, the RAM 22 is a storage area for status information, and the RAM 23 is a storage area for status information where a status change has occurred. The signal transmitting/receiving unit TRX2 is similar to the signal transmitting/receiving unit TRXI. The fire signal receiving circuit FSR is a fire signal receiving circuit composed of a district relay, a comparator, etc. that detects a fire signal output from the fire detector DE. In the above embodiment, it is assumed that a self-holding circuit is provided.

Further, the disconnection monitoring circuit ELS is a circuit that detects a disconnection of the district line intersection 1 or 2, and outputs a disconnection signal when a disconnection is detected. The test circuit TE sends a fire signal to the fire signal receiving circuit FSR when conducting a test. The acoustic control circuit LAC is a circuit that controls the ringing of the district bell B, and the terminal control circuit ERC is a circuit that controls controlled equipment ER such as a fire door, a smoke exhaust damper, a smoke damper, and a fire extinguisher. The terminal response circuit ERR is a circuit that receives a response signal output from a controlled device.

The main transmission line is, for example, a pair of power and signal lines extending from the receiver RE to the repeaters T1 to Tn, which are examples of terminals. District map! 1lfL1 and fL2 are a pair of power and signal lines. The fire detectors DE are of the normal on/off type and are connected to the district lines 1.12 and output a fire signal when a fire phenomenon of a predetermined level or higher is detected.

The terminator ELD is a terminating resistor or the like provided at the end of the district line AC 1 and AC 2.

In addition, in Fig. 4, the repeater Tl is of a mixed type, with one for monitoring to which an abnormality detector such as a fire detector is connected, and the other for control to which a district acoustic device and controlled equipment are connected. ,
The monitoring repeater and the control repeater may be provided separately. Also, when a gas detector is connected as an abnormality detector, for example, a gas leak signal is used instead of the fire signal receiving circuit FSR. A receiving circuit is provided. When the terminal itself is an abnormality detector, for example, an analog fire detector, the fire phenomenon detection means having a fire phenomenon detection section, an amplifier circuit, a sample hole lower circuit, an AD converter, etc.
2, disconnection detection circuit ELS, acoustic control circuit LA
C5 terminal control circuits ERC, ERR, etc. are omitted.

Next, the operation of the above embodiment will be explained.

FIG. 5 is a diagram showing a system flowchart of the receiver RE in the above embodiment.

First, initial settings are performed (SO), and it is determined whether or not there is a control interrupt (sB, this control interrupt is
This is an interrupt that occurs when there is an input from or when selecting during monitoring. If there is no control interrupt, system polling is performed (S2), and if there is a state change in this system polling (that is,
If there is a group that has sent a response signal) (S3), point polling is performed (S4), and if there is a state change in this point polling (that is, if there is a terminal that has sent a response signal) (S5), selection is performed. (S6).

If there is no change in the state when system polling is performed, selection for determining disconnection (operation for determining whether terminals T11 to T44 are connected to the receiver RE) is performed (37). , when system polling is executed and there is no response group, the terminals Tll to T44 are identified one by one.

In Sl, if there is a control interrupt, the common instruction (
If there is no command common to multiple terminals, such as a fire recovery command, storage restoration command, or district sound stop command, which is determined by the presence or absence of memory in the RAM 14 (S8), selecting (
S9) is performed to perform individual control based on the contents stored in the RAM 15.

If it is a common command in S8, system polling (
S2) is performed and control is performed using the common command stored in the RAM 14.

Figure 6 shows system polling (S2) in Figure 5.
This is a flowchart specifically showing the process.

First of all, 5PA, which indicates system polling, normally does not require control interrupt operations by common instructions (SLL).
The receiver RE sends D and status information return command CMI (S12), sets the terminal group number g to "0" (S13), and sets a predetermined time period corresponding to the return timing time of group Gl. When the elapsed time (S
14) If there is a response signal (S15), store it in the group number gt-RAMl 2 where this response signal was received (
S l 6), then terminal group 1! No. 8 gt-
1 increment 31 B), above 314-51
6 and S18 are repeated until the terminal group number g reaches the final terminal group number G (S i 7) and return.

On the other hand, in the SLL, when there is an input command from the operation unit OF (there is a control interrupt command), the command code is read from the RAM 14 in which the control interrupt information is stored. If the command code sent at this time is a fire recovery command (S21), RAMI 4 and RA
The memory contents of M15 are not needed, so please delete them522)
, turn off the control interrupt flag, etc. 523), and return. In S21, if the instruction code is not a fire recovery instruction, erase the corresponding instruction in RAM 14 to prevent retransmission (524), and if terminal control information is not stored in RAMI 5, turn off the 5 control interrupt and return. . If there is memory content in the RAM 15 (S25), the process returns without turning off the control interrupt.

Figure 7 shows point polling (S4) in Figure 5.
2 is a flowchart showing specific operations.

First, a fire detector is connected to a group (in the attached flowchart, the group is referred to as a "group" for simplicity) to which the terminal whose state has changed is stored in the RAM 12. It is determined whether there is a group to which a monitoring terminal such as a repeater belongs, and if there is a group to which the monitoring terminal belongs (S31), the number g of that group is set to R.
Read from AM12 533), set the number of point polling executions k to rlJ (S34), send the address and status information return command CMI of the group, and set the number m of the terminal of the group to rL+S35 ，
536), when a response signal is received from terminal m within a predetermined time (S37.338), it is determined whether it is the first polling or the second polling (341).

If it is the first polling, the fact that a response signal has been received from terminal 1m is stored in RAMII 542), and the above operation is repeated until the final number of terminals in the group 339.340).

Change the number of point polling executions k to "2" S
46, 547), retransmits the group address and status information return command CMI (S35), at this time, 2
Since this is the point polling for the second time (541), the judgment in S43 is made, and if a response signal is received from the terminal m in both the first and second polling (S43), the terminal number n corresponding to the terminal number m is determined. is stored in the RAM 13 (545), and m of RAM'MI 1 is deleted (S44).
, and when the above operation is repeated until the final terminal in the group, the corresponding g in RAM 12 is erased (348),
Return. Note that if there is no group to which the monitoring terminal belongs in S31, the first number g of the group to which point polling is to be performed is read from the RAM 12 (332).

In the above explanation, the number of times point polling is executed is 2.
However, the number of times the point polling is performed may be set to 1 or 3 or more times, or if it is not necessary to give priority to the point polling for the group to which the monitoring terminal belongs, the number of times the point polling is performed is stored in the RAM 12. Point polling of the groups may be performed sequentially. In this case, steps S31 and 333 are omitted in FIG. 7.

FIG. 8 shows the selection (S6) in the above embodiment.
2 is a flowchart showing a specific example.

In this selection, if the monitoring mode (S
51), Read the terminal number n from the RAM 13, send the address of the nth terminal and the first status information return command CMI to the terminal S52.553), wait for a received signal for a predetermined time (S54.555), At this time, if there is a received signal (S54), the received data DA is stored in RAMII to be compared with the second received data, and the address of the nth terminal and the received data DA are sent to the nth terminal ( S56
, 557).

Then, it waits for a received signal for a predetermined time (558, 559), and when there is a received signal (358) and the first received data and second received data are the same, the received data is stored in the RAM 16 ( S60, 561), at this time, the corresponding data in RAM II and the corresponding n in RAM 13 are to be deleted.S62.5
63), if data is stored in RAM 16, II
Process AM16 data and perform necessary display (S64
．． 565), that is, fire, status information, etc. are displayed based on the data in the RAM 16.

As a result of processing the received data in the RAM 16, it is determined whether storage is necessary for fire confirmation (566), and if so, the data is stored and restored in the RAM 14 in order to prepare for storage recovery (accumulation start). Stores the instruction code and controls using flags, etc.; set 1 (S67.368)
, return. In S66, if storage recovery is not necessary but interlock control is necessary, the interlock control table ROM 13 is referred to and the terminal number and instruction code are R.
Store in AM15 and set control interrupt (S69.5
70.568).

On the other hand, if the selection (S6) is one interrupt operation (if it is a control mode), the terminal number n and instruction code are read from the RAM 15, and the address and instruction code CM3 of the nth terminal are set to the first interrupt operation. ] (S7
1.572), and waits for a received signal (address and data from the repeater) for a predetermined time, and if there is a received signal (S73.574), stores the received data DA in RAMI 1, and Terminal address and instruction code C
M3 is retransmitted for the second time (S75.576).

Then, wait for the above received signal for a predetermined time and receive it (
S77, 378), when the control command and the control state of the terminal received for the second time match (S79), in order to later judge whether or not the contents of the sent command and the resulting control result match. , the transmitted instruction code and terminal number n are stored in the RAM 17, and the corresponding terminal number n and instruction code are deleted from the RAM 15 to prevent retransmission (S79
a, 579b).

FIG. 9 is a flowchart showing the specific operation of disconnection monitoring selection (S9) in the above embodiment.

First, the address b of the repeater that performs disconnection monitoring is incremented by 1, and the number of transmissions k is set to "1" (381
, 582), although the number of transmissions k is set to two in the above embodiment, k may be set to three or more times to confirm that the transmission has been reliably performed. It may be closed once.

Then, the address of terminal b and specific information return command CM2
583), waits for a received signal for a predetermined time, and receives the received signal (S84.585). At this time, the number of transmissions is still one (586), so the reception type information CL is stored in RAMI l. Then, the number of transmissions k is updated to "2" (S87, 588), and the process returns to S83 to resend the address of the b-th terminal and the specific information return command CM2. and,
After receiving the received signal, the number of transmissions is the second time (S84-586), so the type information of the first time and the type information of the second time are compared (S89), and it is determined that these two types of information match. Then, the type information of terminal b is read from the RAM 18 (590), and if they match (S91), the process returns.

If they do not match, the type of terminal b has been changed due to mischief or construction work, and the type information of terminal b in RAM 18 is changed to the type information received at that time, and the type of terminal b8 is changed. Display and/or print that the type has been changed (S94.395). On the other hand, if the first type information and the second type information do not match in S89, the connection error of terminal b is stored in the RAM.
19 and display and/or print the connection error of terminal b (S96.597). In the process of these operations,
The repeater address b that performs disconnection monitoring is the final address N.
If it matches, reset the address b to O.59
3), Return.

FIG. 1O is a flowchart showing a specific example of an operation interruption when the operation unit OP is operated manually, which is an operation other than the flowchart shown in FIG.

First, input information is read from the operation unit OF, and if it is a fire recovery command (Slot, 5102), a fire recovery 1 (] instruction code is created, the created instruction code is stored in the RAM 14, and a control interrupt is issued using a flag etc. Set (S
L03-3105), if it is storage recovery rather than fire recovery, create a storage recovery command code.5IO6,
5107), if it is a district sound stop command, create the district sound stop command code (5108.5i09) - If it is a test command, create a test command code, and store the created command code and terminal number n in RAM 5 (SI
IG-5112), if it is a terminal control command, create a control code and store the created control code and terminal number n in RAM.
15 (S113.5114.5112).

In addition, test orders under 5ILO include fire test orders, etc. In this case, a fire test may be caused,
The terminal control for performing a gas leak test is, for example, an on/off control command, such as turning on a fire door, turning on/off a smoke exhaust damper, a fire extinguishing device, etc.

FIG. 11 is a diagram showing a main flowchart of the repeater in the above embodiment.

Note that the repeater has a group number and also has a terminal number.

First, perform initial settings, and if there is a received signal and it is system polling, perform system processing (UO
~U3), if it is not system polling, point processing is performed when the number matches the group number to which the repeater belongs (or the group number of the repeater) (U4)
, U5).

If it is not the own group number, if it is the own terminal number, perform selection processing (U6. U7)
.

FIG. 12 is a flowchart showing a specific example of the system processing (U3) in FIG.

First, when receiving the status information return command CMI, the group number g is set to rQJ, and the fire signal receiving circuit FSR1
District line disconnection monitoring circuit ELS, terminal response receiving circuit ER
Read state information from R (Ull-U13), and
Referring to the previous state information stored in the RAM 22,
If there is a status change, the status information regarding the status change is stored in RAM.
23 and updates the status information of the RAM 22 (U1
4 to U16), and if there is memory in the RAM 23, after a predetermined period of time has elapsed, when the group number g matches its own group number Gk, it sends out a response signal and returns (U17 to U21); In addition, group number g
If the group number Gk and the self group number Gk do not match, the group number g is incremented by 1 (U20).

On the other hand, when performing system processing, if the CMI is not a status information return command but a fire recovery command, FSR, E
Restore LS, LAC, ERC, ERR, RAM21~
23 to the initial state and return (U22 to U
24), if it is a planting recovery order, restore the FSR, and if it is a district sound stop order, turn off the LAC (
U25-U28).

FIG. 13 is a flowchart showing a specific example of the point processing (U5) in FIG. 11.

When performing point processing, set the terminal number m in the group to rQJ, and if it is stored in the RAM 23,
After a predetermined time has elapsed, when the terminal number m matches the terminal number Mk in the own group, a response signal is sent (U31 to U36). Note that the terminal number m is the own terminal number Mk in the group. If it does not match, 5m is incremented by 1 (U35).

FIG. 14 shows the selection process (U
7) is a flowchart showing a specific example.

First, if the command specified by selecting is the status information return command CMI, the status information is read from the RAM 23 and the 2 self address and status information (data DA) are sent out (U41-U43). If it is a self-address, read the status information from RAM23 U44~
U46) If it matches the received data, it resends the self address and status information and erases the status information in the RAM 23 for the first time (U47 to U49). Note that if the received signal is not received, or even if it is received, the self address is If they do not match, the process waits for a predetermined time (U50).

After U49, the corresponding instruction in the RAM 21 is deleted (U67), and the process returns.

In U41, if the status information return command is not received, the number of execution times k of the selecting process is set to 1, and if the specific information return command CM2 is received, the type information is read from the ROM 22, and the self address and type information CL are set. Then, the number k of executions of the selecting process is incremented by 1, and when the received signal is received and it is the own address (U56 to U38), the process returns to U52.

On the other hand, if U52 receives a control command instead of a specific information return command and the number of executions of point polling is 1, it sends out its own address and the received control command CM3, and stores the received control command in the RAM 21. (tJ59
~U62) If the number of executions of the selecting process is 2 when the control command is received (U80), when the first and second control commands match, the command content is set to the corresponding circuit and the selection process is executed twice (U80). Reads the control state from RAM2, sends the self address and the read control state information (data DA), and
Delete the corresponding command 1 (U63 to U67) and return. Note that U57 waits for a predetermined period of time for the second signal to be received (U68), and if the second signal is not received, R
Delete the corresponding command of AM21 and return U67).

[Effects of the Invention] According to the present invention, a terminal such as a fire detector or a repeater is connected to a receiving section such as a receiver or a repeater, the plurality of terminals are divided into a plurality of groups, and system polling and point polling are performed. The present invention has the effect that it is possible to reliably determine whether or not there is a disconnection between the receiver and the terminal in the disaster prevention equipment.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of dividing terminals into groups in an embodiment of the present invention. FIG. 2 is a diagram showing an example of the operation of the above embodiment. FIG. 3 shows a receiver R as a receiving section in the above embodiment.
It is a professional ivy diagram showing an example of E and a connection example of its receiver RE and a repeater. FIG. 4 shows a repeater T1 as a terminal in the above embodiment.
FIG. 2 is a block diagram showing a specific example of the relay device T1 and a sensor connected to the repeater T1. FIG. 5 is a diagram showing a system flowchart of the receiver RE in the embodiment described above. :Figure 56 shows the system polling (S2
) is a flowchart specifically showing the process. Figure 7 shows point polling (S4) in Figure 5.
2 is a flowchart showing specific operations. FIG. 8 shows the selection [S6
] is a flowchart showing a specific example. FIG. 9 is a flowchart showing the specific operation of disconnection monitoring selection (S9) in the above embodiment. FIG. 10 is a flowchart showing a specific example of an operation interrupt when the operation portion OF is input, which is an operation other than the flowchart shown in FIG. FIG. 11 is a diagram showing a main flowchart of the repeater in the above embodiment. FIG. 12 is a flowchart showing a specific example of the system processing (U3) in FIG. FIG. 13 is a flowchart showing a specific example of the point processing (U5) in FIG. 11. FIG. 14 shows the selection process (U
7) is a flowchart showing a specific example. CAD...Group address, SAD...Terminal address, CMI...Status return information sending command. 0M2... Specific information return command, CM3... Ringing command (control command). 0M4... Fire restoration command (common command), CL... Type information.

Claims (3)

[Claims] (1) Terminals such as fire detectors and repeaters are connected to the receiving unit, multiple terminals are divided into multiple groups, polling is performed for each group, and the above-mentioned reception is received at the timing of returning a group that has a terminal whose status has changed. polling each terminal in the group that responded to the receiving section in the system polling;
Disaster prevention performs point polling to respond to the receiving unit at the timing of returning a terminal whose state has changed, collects predetermined information from the terminal that responded in the point polling, and/or performs selection to send a control command to a specific terminal. In the equipment, when the receiving section sequentially calls multiple terminals to request transmission of specific information and receives the specific information from the terminals, a disconnection occurs between the receiving section and the terminals. Disaster prevention equipment that is characterized by determining that the (2) The disaster prevention equipment according to claim (1), wherein each time system polling is performed a predetermined number of times, one or more terminals are sequentially called to request transmission of the specific information. (3) In claim (1) or (2), the specific information is the type information of the terminal, and the type information received from the terminal is compared with the type information of the terminal registered in the receiving section. , Disaster prevention equipment characterized by determining a change in the type of the terminal.