JPH10188186A - Disaster prevention facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely transmit fire information even when the same address is applied to plural pieces of terminal equipment by transmitting/receiving an address code, instruction code, reply data and addition code prepared based on them. SOLUTION: The reception part of fire receiver or repeater prepares the primary addition code based on the address code and instruction code to be transmitted to the terminal equipment and sends the address code, instruction code and primary addition code to the terminal equipment. The terminal equipment compares the 1st addition code prepared based on the received address code and instruction code with the received primary addition code and sends the secondary addition code prepared based on the reply data, address code and instruction code and the reply data to the reception part. The reception part compares the 2nd addition code prepared based on the reply data received from the terminal equipment, address code and instruction code with the secondary addition code received from the terminal equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to disaster prevention equipment.

[0002]

2. Description of the Related Art Conventionally, in a disaster prevention facility in which a plurality of terminal devices such as a fire detector, a repeater, a transmitter or a controlled device are connected to a fire receiver, an address is assigned to each terminal device, and the fire receiver side is used. Therefore, a polling method is used in which terminal devices are sequentially called based on the address, and only the called terminal device sends out individual information (fire detection signal and the like) relating to the terminal device to the fire receiver.
Then, using the data processing device built in the fire receiver, the fire receiver sequentially calls a large number of terminal devices connected to the plurality of alarm lines, respectively, and the fire receiver sequentially calls the terminal devices, such as the occurrence of a fire from each terminal device. Gather information.

Therefore, if such a polling method is used, each terminal device cannot send 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 line increases. For this reason, if there is a terminal device that must transmit information to the fire receiver within a predetermined time after information is generated by the terminal device, the number of terminal devices that can be connected to the line is limited.

[0004] In particular, a transmitter is required as a terminal device for which quick transmission is required. When a fire is to be reported using a transmitter, the reporter operates a push button or the like provided on the transmitter, whereby an activation signal is transmitted from the transmitter to the fire receiver, and the fire is received. A response signal indicating that the machine has received the activation signal is transmitted from the fire receiver to the transmitter, and when the transmitter receives the response signal, the transmitter is notified that the fire has been notified by the transmitter. This is indicated by the lighting of a response lamp provided.

[0005] In the above case, after operating the transmitter, one cycle of polling may be required in the worst case until the response lamp of the transmitter is turned on. As described above, if the waiting time from when the transmitter is operated to when the response lamp is turned on is long, the caller may feel strange. The total number of connected terminal devices is considerably limited.

In order to alleviate this limitation, a plurality of terminal devices connected to a line extending from the fire receiver are sequentially called, individual information unique to each terminal device is collected, and based on the operation of the transmitter. The specific information common to the terminal device having the transmitter is transmitted to the fire receiver in preference to the individual information, and when the fire receiver receives the specific information, the terminal device having the transmitter is changed to another. Priority is given to the terminal device, and the activated transmitter is specified.

[0007]

However, in the above conventional example, when the fire receiver receives the specific information from the terminal device having the transmitter, the fire receiver successively calls the terminal device having the transmitter and transmits the information. Since the terminal device on which the transmitter operates is specified, if many terminal devices with transmitters are connected, the time until the terminal device on which the transmitter operates will be specified, and after operating the transmitter, a fire will occur. There is also a problem that the time until the display that the fire notification is transmitted from the receiver is performed by the transmitter is long.

Therefore, when the fire receiver receives the specific information from the terminal device having the transmitter, the fire receiver does not sequentially call the terminal devices having the transmitter, but simultaneously calls the terminal devices having the transmitter. In response to this call, if the terminal device having the activated transmitter responds,
After operating the transmitter, the time until the display that the fire notification is transmitted from the fire receiver is performed by the transmitter is shortened.

However, in this case, if a plurality of transmitters operate at the same time, a plurality of terminal devices having the plurality of transmitters respond at the same time.
There is a new problem that the fire receiver cannot correctly identify the terminal device having the transmitter.

According to the present invention, when a large number of terminal devices having the above-mentioned transmitters are connected and the terminal devices which have been activated by the transmitters are called at once, the return signals from the terminal devices do not collide and the transmitters are activated. It is an object of the present invention to provide disaster prevention equipment capable of identifying a terminal device that has been used.

When the conventional polling method is used, in order to capture information from a large number of terminal devices within, for example, 5 seconds, it is necessary to increase the transmission speed of data transmitted on an alarm line. Therefore, a transmission path having a large number of bits must be used, which is not economical.

In order to solve this problem, the plurality of terminal devices are divided into groups, an idle period is provided between signals for calling each group, and an interrupt signal for identifying each group is transmitted to the terminal during the idle period. A device has been proposed in which a device transmits a fire to a fire receiver, and when the fire receiver receives the interrupt signal, the terminal belonging to the group that has transmitted the interrupt signal is sequentially called with priority.

However, in such a polling method,
An interrupt signal (for example, a group number) that can identify the group to which the terminal device that has detected the abnormality belongs is transmitted to the fire receiver during the idling period, and subsequently, the terminal devices of the group are sequentially called, so that they belong to one group. When there are many terminal devices, there is a problem that it takes a long time to detect a terminal device that has detected an abnormality.

An object of the present invention is to provide a disaster prevention facility that can quickly detect a terminal device that has detected an abnormality when a large number of terminal devices belong to one group.

A fire receiver polls a terminal device such as a fire detector, a fire sensor, a smoke prevention device, a fire extinguishing device, a burglar alarm device, or a repeater to which these devices are connected. Disaster prevention equipment is known in which monitoring information is sent to a fire receiver, and the fire receiver collects the monitoring information. The disaster prevention equipment sends control information to the terminal device called by the fire receiver.

By the way, in this kind of disaster prevention equipment, a transmission error may occur between the fire receiver and the terminal device. For example, an area where a fire has not occurred may be erroneously determined as a fire occurrence area. Or, the terminal device may mistakenly judge the control command and operate the smoke prevention device or the fire extinguishing device.

In order to prevent a transmission error between the fire receiver and the terminal device as described above, in the above-mentioned conventional device, the fire receiver adds an address code and an instruction code to the fire receiver. A primary addition code is created, and the created primary addition code is sent to a terminal device. The terminal device creates a first addition code by adding the address code and the instruction code received from the fire receiver. If the generated first addition code is the same as the received primary addition code, the terminal device recognizes that the signal received from the fire receiver is normal. On the other hand, the terminal device adds the return data, the address code, the instruction code, and the primary addition code to create a secondary addition code, and creates the secondary addition code, the return data, the address code, the instruction code, and the like. To the fire receiver, and the fire receiver returns the return data, the address code, and the instruction code received from the terminal device,
Add the primary addition code created by the fire receiver and add the second
An addition code is created, and if this second addition code is the same as the received secondary addition code, it is recognized that the terminal device has normally received the address code and the instruction code sent from the fire receiver.

In the above conventional example, the terminal device has a signal transmitting / receiving circuit (a circuit including a parallel / serial conversion circuit),
When an active bit is input to this signal transmission / reception circuit, it is converted and output to be a low signal on the transmission path, and conversely, when an inactive bit is input to the signal transmission / reception circuit, a high signal is output on the transmission path. Is converted and output. When a low signal and a high signal collide on a transmission line, the signal becomes a high signal.

On the other hand, when the fire receiver receives a low signal from the transmission line, the received low signal is converted into an active bit by a signal transmission / reception circuit (including a parallel / serial conversion circuit) included in the fire receiver. When the fire receiver receives a high signal from the transmission line, the received high signal is converted into an inactive bit by a signal transmission / reception circuit of the fire receiver. Therefore, when the low signal and the high signal collide on the transmission path as described above, the fire receiver receives the high signal, and the signal is transmitted to the inactive bit by the signal transmission / reception circuit of the fire receiver. Captured inside the receiver.

Therefore, in the above conventional example, when a plurality of terminal devices such as a fire detector simultaneously transmit an active bit and an inactive bit to a transmission line, the fire receiver takes in the inactive bit.

By the way, in the above conventional method, for example,
In the disaster prevention equipment, the same address is erroneously assigned to two different fire detectors, and one of the fire detectors sends out fire information as return data, and the two fire detectors assigned the same address are returned. If the other fire detector sends information indicating that it is normal (non-fire information), the fire information may not reach the fire receiver for transmission, and the secondary addition code In some cases, a state of transmission abnormality in which the same address is erroneously assigned to two different fire detectors that match the two-addition code and that are different from each other may not be detected.

For example, address AD, command CM
1, CM2 is FFh, 01h, 00 in hexadecimal, respectively.
h (that is, when expressed as an 8-bit binary number, 111111111, 00000001, 00, respectively)
000000. Hereinafter, a hexadecimal number is represented by adding h to the end after the sign. ), And one of the two fire sensors to which the same address is assigned is 01h as return data D1 indicating fire information.
(00000001 when represented by an 8-bit binary number),
Return data D indicating that the other one of the two fire detectors assigned the same address is normal.
00 as 2 (000 when expressed in 8-bit binary number)
00000).

In this case, the primary addition code PS becomes 00h by the above operation. The secondary addition code SS1 for the return data D1 indicating fire information is 01h by the above-described operation, and the secondary addition code SS2 for the return data D2 indicating normal is 00h by the above-described operation. However, since the addresses assigned to the two terminal devices are the same, the return data D1 and D2
2 and the return timings of the secondary addition codes SS1 and SS2 are simultaneous.

Therefore, the return data D1 on the signal line L
And D2 overlap (collide), and similarly, the secondary addition codes SS1 and SS2 overlap on the signal line. Where 01
When h and 00h overlap (collide), it becomes 00h. This is because when the transmission method in which bit 0 is high and bit 1 is low and one of the bits is high and the transmission method is high when either is high, these 01h and 0h are used.
When 0h is represented by an 8-bit binary number, 00h
000000001 and 00000000, because if the bit “0” and the bit “1” overlap, the bit becomes “0”.

Therefore, both the apparent return data and the secondary addition code in transmission are as if 00h were transmitted. When such a signal is received by the fire receiver, the second addition code becomes 00h by the above-described calculation using 00h as apparent return data,
There is a problem that the fire information is not transmitted to the fire receiver due to coincidence with the apparent secondary addition code, and a problem that the transmission abnormality is not detected.

In the disaster prevention equipment according to the present invention, when the same address is assigned to a plurality of terminal devices,
It is an object of the present invention to provide disaster prevention equipment that can reliably transmit fire information to a fire receiver when fire information occurs and that can reliably detect a transmission abnormality.

In the conventional polling method, when the fire receiver detects that a transmission error has occurred in a terminal device or a group including the terminal device, the polling for another terminal device or the group including the terminal device is interrupted. The polling is again performed on the terminal device or the group including the terminal device, and when a transmission error is continuously detected, the receiving unit recognizes that a transmission error has truly occurred, and the receiving unit recognizes the fact. And so on.

However, in the above-mentioned conventional example, polling is performed again when a transmission error is detected. Therefore, the timing for collecting status information and the like from other terminal devices or a group including the terminal devices is determined only by the time when polling is performed again. As a result, there is a problem that the total time required for the polling performed on the terminal devices belonging to the disaster prevention equipment increases.

The present invention can prevent false alarms due to transmission abnormalities and can reliably display transmission abnormalities. In a disaster prevention facility, when a transmission abnormality occurs, the entire polling performed to a terminal device belonging to the disaster prevention facility is performed. It is an object of the present invention to provide a disaster prevention facility capable of preventing an increase in the required time of a disaster.

[0030]

According to the first and second aspects of the present invention, a receiving unit such as a fire receiver or a repeater performs primary addition based on an address code to be transmitted to a terminal device and an instruction code. The terminal device transmits the address code, the instruction code, and the primary addition code, and the terminal device receives the first addition code created based on the address code and the instruction code received from the reception unit, and receives the first addition code from the reception unit. The secondary addition code and the return code, which are created based on the return data, the address code, and the instruction code, are sent to the receiving unit, and the return unit receives the return data received from the terminal device. This is a disaster prevention facility that compares a second addition code created based on the address code and the instruction code with a secondary addition code received from the terminal device.

The invention according to claims 3 to 5 is a fire detector,
A plurality of terminal devices including a repeater, a transmitter or a controlled device, and a receiving unit such as a fire receiver or a repeater are connected via a signal line, and the receiving unit polls the terminal device, and the terminal device is polled. A first signal inverting means provided at a connection between a receiving unit and a signal line in a disaster prevention facility for reading, determining, displaying, or controlling a terminal device from a predetermined terminal information, This is disaster prevention equipment having second signal inversion means provided at a connection portion with a line.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a system diagram showing a disaster prevention facility 100 according to one embodiment of the present invention.

The disaster prevention equipment 100 has a fire receiver RE, a pair of signal lines L also serving as a power supply line, and various terminal devices. Various terminal devices are connected.

Various terminal devices in the disaster prevention equipment 100 are as follows.
A plurality of, for example, 255 terminal devices are connected to the fire receiver RE. The fire detector S includes an analog fire detector S, a transmitter P, a repeater RP, and the like. The analog fire detector S is a fire detector that detects a fire phenomenon such as smoke, heat, light of a flame, gas, or odor, and outputs a physical quantity signal thereof.
It is a fire detector of smoke type such as photoelectric type, dimming type, ionization type, thermal type, flame type, gas type, odor type etc. An on / off type fire detector F, a fire door D, a district bell B, a gas leak detector G, etc., which outputs a fire signal when a predetermined level of fire is detected, is connected to the signal line L via the repeater RP. It is connected.

Here, addresses determined by a two-digit hexadecimal number are sequentially assigned to each terminal device from the side closer to the fire receiver RE for each terminal device. That is, from the side near the fire receiver RE,
Addresses such as 00h, 01h, 02h,..., FEh are given. However, in the following description, for convenience, the above address is mainly indicated by a decimal number.

The terminal devices to which addresses 00h to FEh are assigned are divided into 16 groups G0 to G15 in order from the side closer to the fire receiver RE, and as shown in FIG. , 16 terminal devices belong to each group, and 15 group terminal devices belong to the group G15. By the way, each of the 255 terminal devices is given a unique address composed of eight bits of 00h to FEh, which are different from each other.

FIG. 2 is a diagram showing the address of the terminal device in the above embodiment by using an 8-bit code.
(1) and (2) are the 10th decimal number and 2
It is a figure which shows the address of the 55th terminal device by an 8-bit binary code.

As shown in FIG. 2, the address of each binary code of each terminal device has upper 4 bits (hereinafter, referred to as the upper 4 bits).
The upper digits indicate the group number starting from 0, and the lower digits indicate the terminal device numbers within the group starting from 0. ing. That is, focusing on the tenth (decimal) terminal device, the binary address is “000010001” and the upper digit of the address code is “0000” (0h).
Therefore, the terminal device belongs to the 0th group, and its lower-order digit is “1001” (9h), indicating that the terminal device number in the group is the 10th terminal device corresponding to 9; “0Ah” in which the upper digit and the lower digit are combined indicates that the order of the terminal devices as viewed from the entire disaster prevention facility 100 is the tenth.

The terminal device number corresponding to 254 is 2
Focusing on the 55th (decimal) terminal device,
Since the hexadecimal address is “11111110” and the upper digit of the address code is “1111” (Fh), the terminal device belongs to the fifteenth group, and the lower digit is “1110” (Eh). This indicates that the terminal device is the fifteenth terminal device in the group, and that "FEh", which combines these upper digits and lower digits, indicates that the order of the terminal devices as viewed from the whole of the disaster prevention equipment 100 is 255. I have.

That is, in the above embodiment, the entire 8-bit code indicates the address as viewed from the entire disaster prevention equipment 100, and the upper digit of the 8-bit code indicates the group number, and the lower digit indicates the group number. A terminal device number (hereinafter, referred to as a “terminal device number within a group”) is shown.

As described above, 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. In the “group information collection frame”, a plurality of terminal devices having a common group number can be simultaneously called during polling. In addition, each of the plurality of terminal devices having the called group number can assign a response timing to each terminal device by utilizing the fact that the terminal device numbers in the group are different from each other.

The fire receiver RE polls each of the above terminal devices according to each of point polling, system polling, and selecting modes, which will be described later, and collects predetermined information from predetermined terminal devices, Control the device.

Hereinafter, "polling" refers to point polling or system polling, excluding selecting.

FIG. 3 is a time chart showing the operation of the above embodiment.

"Point polling" shown in FIG.
It is composed of a “group information collection frame” and a “transmitter detection frame”.

The “group information collection frame” is not polled for each terminal device one by one, but for 255
This is a frame called by the fire receiver RE for each of the terminal devices grouped into, for example, 16 groups. Each terminal device belonging to the called group sequentially returns requested data such as status information or type information ID to the fire receiver RE at a response timing assigned to each terminal device.

That is, in the above embodiment, in a disaster prevention facility in which a plurality of terminal devices such as a fire detector, a repeater, a transmitter, and a controlled device are connected to a receiving unit, a plurality of terminal devices belong to a plurality of groups. Divided, the receiving unit performs polling for each group, between the transmission of a polling signal to a predetermined group of a plurality of groups, and the transmission of a polling signal to the next group of the predetermined group, the predetermined This is a disaster prevention facility in which a receiving unit receives information from a plurality of terminal devices belonging to a group in a time-sharing manner.

According to the above embodiment, when there are a large number of terminal devices belonging to one group, it is possible to quickly detect the terminal device that has detected an abnormality.

When a plurality of time slots used for time division are provided, as will be described later with reference to FIG. 23, a polling signal is transmitted to a predetermined group and a polling signal is transmitted to a group next to the predetermined group. The time slot is set such that the later the start time of the time slot between the transmission and the transmission is, the wider the time slot is.

Here, the “state information” is physical quantity data of a detected fire phenomenon when the terminal device is an analog fire detector, and is an on-off type fire when the terminal device is a repeater RP. It is data indicating the presence or absence of a fire signal or gas leak signal when the sensor F or the gas leak detector G is connected. When the controlled device such as the fire door D or the district bell B is connected, This is data indicating whether these devices are open or closed and whether they are operating, and data indicating whether they are sounding.If the terminal device is a transmitter, the push button switch is pressed to determine whether it is operating. It is data indicating whether or not it is.

The predetermined information collected in the “group information collection frame” constituting the point polling is called “group information”.

The "transmitter detection frame" which constitutes the point polling is one in which the transmitter P is artificially operated, and since the operation information of the transmitter P is highly reliable, the operation information is quickly collected. It is a frame provided to perform. Therefore, as shown in FIG. 3, the transmitter detection frame is simultaneously called for all the transmitters belonging to the disaster prevention equipment 100 every time the “group information collection frame” is executed once for one group. If there is a transmitter that is emitting a message, the transmitter that is issuing the alert is designated as the issuing transmitter in the time slot specified for each transmitter in response to the call. It returns its address to the fire receiver RE in the current time slot.

The "reporting transmitter address information" is an address collected in the "transmitter detection frame". In the above-described embodiment, when a plurality of transmitters P issue a report, the transmitter with the larger address stops transmitting, and only the transmitter with the smallest address returns. The details will be described later.

"System polling" is for the fire receiver R
E transmits a predetermined control command to the terminal devices, and controls all the terminal devices. Here, at the time of system polling, the control command issued by the fire receiver RE to a plurality of terminal devices is, for example, a fire recovery command (a terminal device such as an analog fire detector S or a relay device RP that has transmitted a fire signal, A command for restoring the terminal device such as the repeater RP that is ringing the district bell B to a normal monitoring state), a command for restoring the accumulation (performs a accumulation operation for determining whether or not the fire condition continues for a predetermined time). Therefore, a command for restoring a terminal device such as a fire detector or a repeater which has transmitted a fire signal) and a district sound stop command (command for stopping the ringing district bell B).

In the "selecting", a predetermined control command is transmitted by designating an address corresponding to a desired terminal device to control the terminal device, or to request an arbitrary terminal device for status information or the like. This is an operation of transmitting a command to a desired terminal device and collecting status information and the like from each terminal device.

The operation proceeds from the upper left to the upper right in FIG. 3, and from the right end, the operation proceeds to the left end of the next lower stage.
The processing proceeds sequentially as described above. In FIG. 3, the signal above the horizontal line is a signal transmitted from the fire receiver RE, and the signal below the horizontal line is a signal transmitted from the terminal device.

First, each code of the address AD, the commands CM1, CM2, and the primary sum check code PS sent from the fire receiver RE to the terminal device, the return data D1, sent from the terminal device to the fire receiver RE, Next sum check code SS, own address DA, return data Da
Each code will be described.

Here, the codes AD, CM1, CM
2, PS, D1, SS, DA and Da are, for example, a start bit SB (in FIG. 2, the start bit is indicated by MSB), an 8-bit data area,
The stop bit EB (in FIG. 2, the stop bit is indicated by LSB) is constituted by a total of 10 bits.
Therefore, when these are transmitted from the fire receiver RE to the terminal device or from the terminal device to the fire receiver RE in transmission, as a binary number represented by 10 bits, one bit is sequentially transmitted from the upper digit. Are sent one by one. In the following description, codes AD, CM1, CM2, PS, D
An 8-bit data area indicating the contents of 1, DA, Da, and SS is represented by a 2-digit hexadecimal number for convenience of description.

First, the address AD, the commands CM1 and CM2, and the primary sum check code PS are transmitted from the fire receiver RE to the terminal device. Here, the address AD is a two-digit hexadecimal number from 00h to FFh. When the address AD is from 00h to FEh (that is, when AD ≠ FFh), the disaster prevention equipment 100 to be operated in the selecting operation is provided. Indicates the address of the provided terminal device (hereinafter, referred to as "selecting address code"), and when the address AD is FFh, indicates that it is point polling or system polling (hereinafter, referred to as polling command). .

The command CM1 is also a two-digit hexadecimal number, and is used for selecting (ie, AD @ FFh).
), Indicate its contents, for example, the command C
If M1 is 82h, it indicates that it is a fire test command, and if 83h, it indicates that this is a selection of a confirmation light extinguishing control command for extinguishing the confirmation light of the fire detector.

When a polling command (AD = FFh) is being performed, the command CM1 indicates the type of polling to be performed. That is, the command CM1 is
If it is 0Xh, it indicates that point processing is performed (point processing instruction), and if it is FXh, it indicates that system processing is performed (system processing instruction).

Here, X is a hexadecimal number from 0h to Fh, and in this case, indicates the contents of the polling. For example, when the command CM1 is 00h, it is a point polling, indicating a type information ID return instruction,
When the command CM1 is 01h, it is a point polling, indicating a status information return instruction,
If 1 is F0h, it is a system polling,
When the command CM1 is F1h, the command is a system polling, which indicates a storage recovery command. When the command CM1 is F2h, the command is a system polling, which indicates a district sound stop command.
When M1 is F3h, it is a system polling and indicates an emergency broadcast stop command.

The command CM2 is also a two-digit hexadecimal number, but is not used in the case of selecting and system polling.

In the case of point polling,
The lower digit of the command CM2 indicates a group (group designation code in point polling) to which predetermined information is to be returned in the polling. For example, the command CM2 is represented by 0Xh. Where X
Is a hexadecimal number from 0h to Fh, and indicates a group number to which predetermined information should be returned.

Further, the primary sum check code PS is:
This code is used by the terminal device to confirm whether or not transmission from the fire receiver RE has been normally performed. The code is obtained by a predetermined calculation based on the codes AD, CM1, and CM2, and will be described later. .

On the other hand, in the case of point polling, return data D1 is sent from each terminal to the fire receiver RE as status information or type information ID, and a secondary sum check code SS is sent as a secondary sum check code to each terminal. Is transmitted to the fire receiver RE.

In the case of selecting, the own address DA and return data Da are sent to the fire receiver RE, and the secondary sum check code SS is sent to the fire receiver RE. In the case of system polling, the terminal device does not return anything. Note that the return data Da is information indicating that the operation has been performed in accordance with the control command when a control command such as the status information of the terminal device, the type information ID, or the fire recovery command is received.

The secondary sum check code SS is a code used by the fire receiver RE to confirm whether or not the transmission from the terminal device has been normally performed. AD, CM1, CM
2, PS and D1 by a predetermined calculation. In the case of selecting, the above AD, CM1, CM2, P
The predetermined calculation is obtained from S, DA, and Da. This predetermined calculation will be described later.

Next, the operation of the above embodiment will be described with reference to FIG.

The point polling includes a “group information collection frame” and a “transmitter detection frame”. The “group information collection frame” includes a “receiver field” in which the receiver calls the terminal device, It consists of a "first waiting field WF1" in which transmission is not performed between the receiver and the terminal device, and a "terminal device field" in which the called terminal device performs signal transmission, and
The "transmitter detection frame" includes a "transmitter field" for transmitting a signal between the receiver and the transmitter, and a "second waiting field WF2" for not transmitting a signal between the receiver and the terminal device. It is composed of

First, as shown in FIG. 3, at a time point P0, a “receiver field” in a “group information collection frame”, which is one operation of the point polling, is started. That is, the fire receiver RE operates at the address AD.
FFh, 01h as the command CM1, for example 00h as the command CM2, and a predetermined primary sum check code PS.

On the other hand, in the terminal device field, the terminal devices belonging to each group receiving
When the group number indicated by the upper digit of the own address matches the group number received from the fire receiver RE, after the first waiting field WF1 ends, the return data D1 and the secondary sum check code SS are transmitted. Return to fire receiver RE.

When each of the terminal devices returns the requested data, the terminal device number is sequentially reduced from the terminal device number at the time of response assigned to each of the 16 terminal devices belonging to the called group. Return the data.

On the other hand, the fire receiver RE enters the terminal device field after the first waiting field WF1 has elapsed. The terminal device field is 16 slots for the fire receiver RE to receive the respective status information of each terminal device. In this terminal device field, the terminal devices of terminal device numbers 0 to 15 correspond to each terminal device. The return data D1 and the secondary sum check code SS are sequentially transmitted for each time slot corresponding to the terminal device number, and the fire receiver RE collects the data transmitted from each terminal device.

When this terminal device field ends,
A “transmitter detection frame” is started. The “transmitter detection frame” is one operation of the point polling, and is a frame in which the fire receiver RE transmits a transmitter calling pulse PC for calling only the transmitter P at the time point CP in FIG. When the push button of the predetermined transmitter P is operated and the predetermined transmitter P is in the alerting state, the transmitter P transmits its own address ADp immediately after the receiver RE transmits the transmitter calling pulse PC. I do. Here, since the transmitter calling pulse PC also serves as a start bit from the transmitter P, the transmitter address AD represented by 8 bits is used.
The return timing of p can be synchronized. In this manner, the fire receiver RE can obtain the address information ADp of the transmitter P that has issued the alarm.

In the "transmitter detection frame", when the transmitter field ends, the fire receiver RE enters the second waiting field WF2. When the second waiting field WF2 ends, the group of group number 0 is designated. Point polling (G
0) is ended.

Then, a command CM for specifying a group
2 is incremented by one, and at time point P1, point polling (G1) for designating and executing the group of group number 1 is started, and point polling (G
The same operation as the operation 0) is repeated. Hereinafter, at time points P2, P3,..., P14 omitted in FIG. 3, each group number 2h,..., Fh is designated, point polling is started, and point polling (G
The same operation as the operation 0) is repeated.

After ending the point polling by designating the group number Fh, although omitted in FIG.
Point polling for collecting the type information ID is executed, the fire receiver RE sends FFh as the address AD, and 00h as the commands CM1 and CM2, respectively.
No. 01h is transmitted, a predetermined primary sum check code PS is transmitted, and instead of transmitting the status information of each terminal device as return data D1 in the terminal device field, the type information ID is transmitted from each terminal device.

Except for the return data D1, an operation basically similar to the operation of the point polling for collecting the state information is executed by designating the group of the group number 0h. Then, the groups of the group numbers 0h to Fh are sequentially designated, point polling is executed, and the fire receiver RE collects the type information ID from each terminal device. After the point polling designating the group of the group number Fh is completed, the point polling for collecting the state information is started.

Next, the operation of system polling in the above embodiment will be described.

At time point P16 in FIG. 3, for example, it is assumed that the operator inputs a command to perform system polling for executing fire recovery to the fire receiver RE via the operation unit OP of the fire receiver RE. In this case, the fire receiver RE issues a polling command (AD = FF) as a command indicating system polling for executing fire recovery.
h), a fire restoration command (CM1 = F0h), and a primary sum check code PS are sequentially transmitted.

In the above embodiment, when executing the system polling, a response signal is not returned from the terminal device to the fire receiver RE.
A response signal indicating that the command signal has been received from E may be returned from the terminal device to the fire receiver RE.

In the system polling, when the restoration of the storage, the stop of the area sound, and the stop of the emergency broadcast are executed, instead of the fire restoration instruction (CM1 = F0h) in the above description, the accumulation restoration instruction (CM1 = F1h), respectively. A local sound stop command (CM1 = F2h) and an emergency broadcast stop command (CM1 = F3h) are sent out, and otherwise, basically the same operation as the system polling operation for fire recovery is executed. .

Next, the selecting operation in the above embodiment will be described.

At time point P17 in FIG. 3, for example, the operator issues a command to perform selection for turning off the confirmation lamp of the terminal device having the address AD of 12h through the operation unit OP of the fire receiver RE. It is assumed that input is made to the receiver RE. In this case, the fire receiver RE sends the address (AD = 1) of the terminal device to be selected as a command or the like indicating selection for turning off the confirmation lamp.
2h), a confirmation light extinguishing control command (CM1 = 83h),
The primary sum check code PS is sequentially transmitted.

The terminal device receiving the signal and having the address AD of 12h returns its own address DA, return data Da, and secondary sum check code SS to the fire receiver RE. Return data D in this case
“a” is data indicating a state in which the confirmation lamp is turned off.

In addition to the command sent from the fire receiver RE in the selecting, a fire test command (CM1 = 8) in addition to the confirmation light extinguishing control command (CM1 = 83h).
2h), confirmation lamp lighting control command (CM1 = 84h), CL
Control command (CM1 = 85h), start-up and return command of the smoke prevention repeater (CM1 = 86h), interlocking sound control command (CM1
= 87h), manual sound control command (CM1 = 88h), S
CI disconnection control command (CM1 = 89h), fire recovery command (CM1 = F0h), storage recovery command (CM1 = F1h)
District sound stop command (CM1 = F2h), emergency broadcast stop command (CM1 = F3h), type information ID return command (CM1)
= 00h) and a status information return instruction (CM1 = 01h). The operation in which the fire receiver RE sends out the above-mentioned commands to perform the selecting is basically the same as the above-described selecting operation to turn off the confirmation lamp of the terminal device, except that the contents of the commands are different from each other. Operation.

Next, in the above embodiment, when a plurality of transmitters are simultaneously issuing an alarm while executing the transmitter detection frame in the point polling, only one of the addresses of the transmitters receives a fire. The operation returned to the device RE will be described.

FIG. 4 shows a case where three transmitters P _A , P _B , and P _C try to send response signals at the same time in the above embodiment (they try to send their own addresses at the same time to notify the notification). 6 is a time chart illustrating the operation of (case).

In the time chart shown in FIG. 4, when a plurality of transmitters try to send out their own addresses AD at the same time in order to notify the alarm, only the smallest address AD among the own addresses AD is the fire receiver. Since the address AD is transmitted to the RE and the address AD other than the smallest address AD is not transmitted, there is no collision of the address AD on the transmission line. The reason why the address AD does not collide on the transmission line will be described below.

FIG. 4 (1) is a diagram showing a transmitter calling pulse PC output at the timing CP from the fire receiver RE. FIGS. 4 (2), (3) and (4) show alarms. each transmitter P _a which is, P _B, is a diagram showing an address signal sent from P _C.

[0092] In the description of FIG. 4, for convenience of explanation, the transmitter P _A, P _B, shown in decimal addresses AD of P _C, is on the time chart that address A
D is indicated by a binary number. That is, the address of the transmitter P _A is “62” in decimal (“001” in binary).
A 11110 "), the address of the transmitter P _B, 10
Hexadecimal 64 ("0100000" in binary)
, And the address of the transmitter P _C, 160 10 decimal
("10100000" in binary).

[0093] Figure 4 when CP shown in (1), transmitter P _A from the fire receiver RE, P _B, P _C are transmitter call pulse P
It is assumed that the transmitters P _A , P _B , and P _C have each issued an alert when C is received. Then, after the transmitter calling pulse PC is transmitted from the fire receiver RE at the time point CP, the transmitters P _A , P _B , and P _C transmit their own addresses AD.
From the most significant bit of the data.

[0094] In this case, the address AD of the transmitter P _B is "0
100000 ”(binary number), the most significant bit is“ 0 ”, and the address AD of the transmitter P _A is“ 0 ”.
0111110 "are the (binary), the most significant bit is" 0 ", the address AD of the transmitter P _C is" 1
0100000 "(binary number), the most significant bit is" 1 ".

[0095] That is, paying attention to the most significant bit of each address AD, the transmitter P _A, the P _B sends a "0" (i.e. non-active level), the transmitter P _C is "1" (i.e., active level) In the above embodiment, when “0” (ie, inactive level) and “1” (ie, active level) are sent out to the signal line L, the signal on the signal line L becomes “ 0 "(ie, inactive level).

Although the value of the signal line L is "0" (that is, inactive level),
Since transmitter P _C is attempting delivery "1" (i.e., active level), the transmitter P _C determines that transmitter smaller address AD than its own address AD is in signal transmission, in a subsequent to give up the delivery of the self-address AD of the transmitter P _C. On the other hand, transmitters P _A and P _B
Since the signal line is "0" (that is, inactive level) and the transmitters P _A and P _B are transmitting "0" (that is, inactive level), the most significant bit of the address AD is transmitted. The transmitters P _A and P _B do not judge that the transmitter of the address AD smaller than their own addresses AD is transmitting a signal, and the self-address AD of the transmitters P _A and P _B thereafter. To continue sending.

Next, focusing on the bit next to the most significant bit of the address AD, the transmitter P _A sends “0” (ie, inactive level), and the transmitter P _B sends “1” (ie, active level). ), The signal on the signal line L is “0” (ie, inactive level).
become.

[0098] Despite this, the signal on the signal line L becomes "0" (i.e. non-active level), the transmitter P _B is "1" (i.e., active level)
, The transmitter P _B determines that the transmitter with the address AD smaller than its own address AD is transmitting a signal, and abandons the transmission of the transmitter P _B 's own address AD thereafter. .

On the other hand, in the transmitter P _A , the signal line is “0” (that is, inactive level), and the transmitter P _A
Is transmitting "0" (i.e., inactive level), so that at the stage of transmitting the next bit after the most significant bit of the address AD, a transmitter having an address AD smaller than its own address AD is transmitting a signal. without determining the attempts to continue the delivery of own address AD of the transmitter P _a in the subsequent.

[0100] Then, focusing on the next following bits of the most significant bit of the address AD, the transmitter P _A is transmitted "1" (i.e., active level), the signal line is "1" (i.e., active level) Therefore, at the stage of transmitting the next bit after the most significant bit of the address AD, the transmitter P
_A does not determine that the transmitter of the smaller address AD than its own address AD is in signal transmission, to attempt to continue the transmission of the own address AD of the transmitter P _A in the subsequent. Then, the above determination and operation are repeated to repeat the address A
The least significant bit of D is sent.

[0102] As a result, only the address of a small transmitter P _A most address AD is sent to the fire receiver RE, therefore, a plurality of transmitters attempts to simultaneously sending each own address AD to inform the alarm In this case, collision of each self address AD can be prevented. Then, as shown in FIG. 4 (4), the signal on the transmission is the fire receiver R
The transmitter call pulses from E to a start bit, the address AD of the transmitter P _A is sent by 8 bits.

When a plurality of transmitters try to send out their own addresses AD simultaneously to notify the alert,
Only the largest address AD among the own addresses AD is transmitted to the fire receiver RE, and the largest address A
The address AD other than D may not be transmitted. In this way, when a large number of terminal devices having transmitters are connected and the terminal devices on which the transmitters have been activated are called at once, the terminal device receives an address from the terminal device. It is possible to identify the terminal device on which the transmitter has been activated without collision of the return signals.

In other words, the above-described embodiment is applicable to a case where a plurality of transmitters generate alarms in a disaster prevention facility in which a plurality of terminal devices such as a fire detector, a repeater, a transmitter, or a controlled device are connected to a receiver. In addition, the disaster prevention equipment is controlled so that only the signal of one of the plurality of transmitters that has issued the alarm is transmitted to the receiving unit. In this case, the transmitter has priority determining means for determining the priority of transmitting to the receiving unit with another transmitter when the other transmitters are simultaneously in the signal transmission state. Further, the priority determining means is means for determining the largest address or the smallest address among the addresses of the plurality of transmitters that have issued the alert,
The largest address or the smallest address determined is transmitted to the receiving unit.

According to the above-described embodiment, when a large number of terminal devices having a transmitter are connected and the terminal devices on which the transmitter has been activated are called at once, the return signals from the terminal devices do not collide, and the transmitter does not collide. The activated terminal device can be specified.

FIG. 5 is a block diagram showing an example of the fire receiver RE used in the above embodiment.

The fire receiver RE includes a microprocessor M
PU1 and ROM (Read Only Memory)
y) 11 to 13 and RAM (Random Acces)
s Memory) 11 to 19 and an interface IF
11 to 13, a signal transmitting / receiving unit TRX1, and an operation unit OP
, A display unit DP, and a timer Tslt.

The ROM 11 is an area for storing programs related to the flowcharts shown in FIGS.
The ROM 12 is an area for storing a terminal map table in which addresses (group numbers and terminal numbers) of the respective terminal devices and type information IDs correspond. The ROM 13 is an area for storing an interlock control table indicating an interlock control relationship between a fire area and a controlled device such as a fire door to be controlled.

The RAM 11 is a work area. RAM
Reference numeral 12 denotes return data D1 returned from the terminal device in the point polling group information collection frame.
And an area for storing the secondary sum check code SS, and is composed of a RAM 121 for storing return data D1 and a RAM 122 for storing the secondary sum check code SS. The RAM 13 is an area for storing addresses of various terminal devices and type information IDs.

At the time of initial setting, the address of each terminal device stored in the ROM 12 and the type information ID are R
When these addresses and the type information ID need to be changed due to the loading of the AM 13 and subsequent replacement of the terminal device or the like, these can be changed by operating the operation unit OP. In the point polling group information collection frame,
When the type information ID is returned, the type information ID previously stored in the RAM 13 is the returned type information I.
D is updated.

The RAM 14 stores, in the group information collection frame, an address AD to be transmitted to the terminal device,
Commands CM1 and CM2 and primary sum check code P
S is an area for storing S. The RAM 14 has a RAM 141 for storing the address AD, a RAM 142 for storing the command CM1, and an R for storing the command CM2.
It comprises an AM 143 and a RAM 144 for storing the primary sum check code PS.

The RAM 15 is an area for storing the address of the returned transmitter in the transmitter detection frame in the point polling. The RAM 16 is an area for storing the transmission abnormality detection variable fx for each address AD. The transmission error detection variable fx is such that the address AD is x
Is a variable indicating the number of times a transmission error has been detected for the terminal device, and is expressed in decimal notation.

The RAM 17 stores an address AD to be transmitted to the terminal device in system polling and a command CM.
1 and an area for storing the primary sum check code PS. The RAM 17 stores the address AD.
AM 171 and RAM 172 for storing command CM1
And a RAM 173 for storing the command CM2.

The RAM 18 stores the address AD to be transmitted to the terminal device in the selecting and the command CM1.
And a primary sum check code PS. It should be noted that the RAM 18 stores the RA storing the address AD.
M181 and RAM 182 for storing the command CM1
And a RAM 18 for storing the primary sum check code PS
3 is comprised.

The RAM 19 stores the self address DA of the terminal device returned from the terminal device in the selecting,
This area stores return data Da and a secondary sum check code SS. The RAM 19 includes a RAM 191 that stores the terminal device's own address DA, a RAM 192 that stores the return data Da, and a RAM 193 that stores the secondary sum check code SS.

The timer Tslt manages the start time and the end time of the slot for receiving the status information and the transmitter slot.

The interface IF11 is an interface for connecting the operation unit OP and the microprocessor MPU1. The interface IF12 is an interface that connects the display unit DP and the microprocessor MPU1. The interface IF13 is connected to the signal transmitting / receiving unit TR.
This is an interface for connecting X1 to the microprocessor MPU1.

The signal transmitting / receiving unit TRX1 includes a parallel-to-serial converter, a transmitting circuit, a receiving circuit, a serial-to-parallel converter, and the like. The operation unit OP is provided with various switches, numeric keys, and the like. Various indication lights, CR
T and the like are provided.

FIG. 6 is a block diagram showing an analog photoelectric fire detector S as an example of the terminal device in the above embodiment.

The analog photoelectric fire detector S comprises a microprocessor MPU2, ROMs 21 and 22, and a RAM.
21 to 28, an interface IF 21 to 26, a signal transmitting / receiving unit TRX2, a light emitting diode LD as an example of a light emitting element for smoke detection, a photodiode PD as an example of a light receiving element, and generating pulses at predetermined time intervals. A clock source CLK for driving the light emitting diode LD and the photodiode PD based on sensor processing such as light emission and light reception (smoke detection operation), a light emitting diode LED as an operation confirmation light, a timer Td, and a light emitting diode L
A light emitting circuit LDC for causing D to emit light with a predetermined light emission amount, and a light receiving circuit PDC having an amplifier circuit and a sample hold circuit
And a light emitting circuit LEDC for controlling turning off and lighting of the operation confirmation light LED, and a fire test circuit TE for increasing the sensitivity of the light receiving section to a predetermined value and executing a fire test.

The ROM 21 is an area for storing programs related to operations such as point processing, system processing, and selecting processing. The ROM 22 stores its own address (the upper digit is also used as the group number to which the self belongs, and the lower digit is also used as the terminal number), and the type information ID.
Is an area for storing Note that a dip switch or the like may be used instead of the ROM 22.

The RAM 21 is a work area. RAM
An area 22 stores information on the current physical quantity of smoke. The RAM 23 is an area for storing the timing of returning the in-group terminal number m and its own status information to the fire receiver RE (that is, the slot assigned to itself). The return timing for returning to the fire receiver RE is calculated immediately after the initial setting, based on the terminal number m in the group indicated by the lower digit of the own address,
In the following description, the return timing is indicated by an information return start time Tdm.

The RAM 24 is an area for storing the address AD, the commands CM1, CM2, and the primary sum check code PS received from the fire receiver RE in the point polling group information collection frame. Note that R
The AM 24 includes a RAM 241 for storing an address AD,
A RAM 242 for storing the command CM1, and a command C
It comprises a RAM 243 for storing M2 and a RAM 244 for storing the primary sum check code PS.

The RAM 25 is an area for storing the return data D1 sent to the fire receiver RE in the point polling group information collection frame and the secondary sum check code SS. The RAM 25 includes a RAM 251 for storing the return data D1 and a RAM 252 for storing the secondary sum check code SS.

The RAM 26 is an area for storing an address AD, a command CM1, and a primary sum check code PS in system polling. The RAM 26 is
RAM 261 for storing address AD, and command CM
1 and a RAM 263 for storing the primary sum check code PS.

The RAM 27 is an area for storing an address AD in selection, a command CM1, and a primary sum check code PS. The RAM 27 includes a RAM 271 for storing the address AD, a RAM 272 for storing the command CM1, and a primary sum check code PS.
And a RAM 273 for storing the same.

The RAM 28 is an area for storing the self address DA of the fire detector S returned in the selecting, the return data Da, and the secondary sum check code SS. The RAM 28 has a self address DA
, A RAM 282 for storing the return data Da, and a RAM 283 for storing the secondary sum check code SS.

The interface IF21 is connected to the clock CL
This is an interface for connecting K to the microprocessor MPU2. The interface IF22 is an interface for connecting the fire test circuit TE and the microprocessor MPU2. The interface IF23 is an interface that connects the signal transmission / reception unit TRX2 and the microprocessor MPU2. Interface IF24
Is an interface for connecting the light receiving circuit PDC and the microprocessor MPU2. Interface IF2
5 is a light emitting circuit LEDC and a microprocessor MPU2
Is an interface that connects Interface I
F26 is an interface that connects the light emitting circuit LDC for smoke detection and the microprocessor MPU2. Td
Is a return timing management timer for managing the data return start time and the like. The signal transmitting / receiving unit TRX2 is similar to the signal transmitting / receiving unit TRX1.

The analog type fire detector S is not limited to the photoelectric type shown in the above embodiment, but may be a thermal type, a flame type, a gas type, an odor type or the like. In this case, in place of the light emitting diode LD for smoke detection and its light emitting circuit LDC, the photodiode PD and its light receiving circuit PDC, if a thermal analog fire detector is used, a thermistor as a heat sensing means and its detecting circuit If it is a flame type analog fire detector, a light receiving element such as a pyroelectric element or an ultraviolet detection element and a detection circuit thereof may be provided, and a gas type analog fire detector may be used. If provided, a gas sensor and its detection circuit may be provided.
An odor sensor and its detection circuit may be provided. Except for these points, the basic structure is the same.

FIG. 7 is a block diagram showing a repeater RP as an example of the terminal device in the above embodiment.

The repeater RP is a microprocessor MPU
3, ROMs 31 and 32, RAMs 31 to 38, interfaces IF 31 to 38, and a timer Td as a return timing management timer for managing data return start time and the like.
And a fire signal receiving circuit FSR for receiving a fire signal from an on / off type fire detector connected to the repeater RP
A fire test circuit TE for increasing the sensitivity of the light receiving section of the on / off type fire detector connected to the repeater to a predetermined value and executing a fire test, and a district acoustic control circuit LAC for controlling a district bell (not shown) An inter-CL control circuit CLR for controlling a CL line (not shown) in the repeater; and a smoke control circuit BHR for controlling opening and closing of a fire door D (not shown).
, An SCI disconnection control circuit SCR for controlling ON / OFF of a power supply at the end of the repeater RP and the signal line, a broadcast control circuit BAC for controlling the generation of an alarm from a speaker (not shown), and a signal transmission / reception unit TRX3.

The ROM 31 is an area for storing programs and the like related to the flowcharts shown in FIGS.
The ROM 32 is an area for storing a self address (an upper digit is used as a group number and a lower digit is also used as a terminal number), a type information ID, and the like. Note that a dip switch or the like may be used instead of the ROM 32.

The RAM 31 is a work area. RAM
Reference numeral 32 denotes current state information (that is, whether or not the on / off type fire detector F is transmitting a signal indicating a fire).
Is an area for storing. The RAM 33 is an area for storing the timing of returning its own status information whose terminal number is m in the group to the fire receiver RE (that is, the slot assigned to itself). This return timing is indicated by an information return start time Tdm in the following description. In addition,
Immediately after the later-described initialization (U1 in FIG. 16), the return timing is calculated based on the terminal number indicated by the lower digit of the own address (U2 in FIG. 16).

The RAM 34 is an area for storing the address AD, the commands CM1, CM2, and the primary sum check code PS received from the fire receiver RE in the point polling group information collection frame, and a RAM 341 for storing the address AD. RAM 342 for storing command CM1, and RAM for storing command CM2
343 and RA storing the primary sum check code PS.
The RAM 35 composed of the M344 and the
This area stores return data D1 to be transmitted to the fire receiver RE and a secondary sum check code SS in the polling group information collection frame.
And a secondary sum check code S
And a RAM 352 for storing S.

The RAM 36 is a storage area for storing the address AD, the command CM1, and the primary sum check code PS in the system polling. The RAM 361 for storing the address AD and the RA for storing the command CM1.
M362 and R for storing the primary sum check code PS.
AM363.

The RAM 37 is a storage area for storing an address AD, a command CM1, and a primary sum check code PS in the selecting operation. The RAM 371 stores the address AD, and the RAM 3 stores the command CM1.
72 and a RAM for storing the primary sum check code PS
373.

The RAM 38 stores the self address DA of the terminal device returned in the selecting and the return data D
and an area for storing the secondary sum check code SS, and is composed of a RAM 381 for storing the address DA, a RAM 382 for storing the return data Da, and a RAM 383 for storing the secondary sum check code SS. .

The interface IF31 is an interface for connecting the fire signal receiving circuit FSR and the microprocessor MPU3. The interface IF32 is an interface for connecting the fire test circuit TE and the microprocessor MPU3. Interface IF33
Is the local acoustic control circuit LAC and the microprocessor MP
This is an interface for connecting to U3. The interface IF34 is an interface for connecting the inter-CL control circuit CLR and the microprocessor MPU3. The interface IF35 is an interface for connecting the smoke prevention control circuit BHR to the microprocessor MPU3. The interface IF 36 is connected to the SCI disconnection control circuit S
This is an interface for connecting the CR and the microprocessor MPU3. The interface IF 37 is an interface for connecting the broadcast control circuit BAC and the microprocessor MPU3. The interface IF38 is an interface for connecting the signal transmitting / receiving unit TRX3 and the microprocessor MPU3. Note that the signal transmitting / receiving unit T
RX3 is similar to the signal transmission / reception unit TRX1.
In the above embodiment, the on-off type fire detector, the district bell, the fire door, and the speaker are connected to one repeater, but at least one of these devices may be connected to the repeater. .

FIG. 8 is a block diagram showing the transmitter P in the above embodiment.

The transmitter P is a microprocessor MPU4
ROM41, 42, RAM41-49, interface IF41-43, signal transmitting / receiving unit TRX4,
Push-button type switch SW to be operated in case of fire
And a light emitting diode LED as a response lamp, a light emitting circuit LEDC for emitting the response lamp LED, and a bit timer Tb.

The ROM 41 is an area for storing programs related to the flowcharts shown in FIG. 18 and FIG. The ROM 42 is an area for storing its own address whose upper digit is used as a group number and whose lower digit is also used as a terminal number. Note that a dip switch or the like may be used instead of the ROM 42.

The RAM 41 is a work area. RAM
An area 42 stores current operation information. RAM
Reference numeral 43 denotes an area for storing the timing of returning its own operation information to the fire receiver RE in the operations shown in FIGS. 18 and 19. The timing is calculated based on the terminal number m in the group indicated by the lower digit of the own address immediately after the initial setting, similarly to the operation of the analog photoelectric fire detector S. The RAM 44 is an area for storing its own address setting to be transmitted in the operation shown in FIGS. 18 and 19 when the transmitter is operating (ie, issuing a notification).

The RAM 45 is an area for storing the address AD, the commands CM1, CM2, and the primary sum check code PS received from the fire receiver RE in the point polling group information collection frame, and includes a RAM 451 for storing the address AD. , RAM 452 for storing command CM1, and RA for storing command CM2.
M453 and R for storing the primary sum check code PS.
AM454.

The RAM 46 is an area where the return data D1 sent to the fire receiver RE and the secondary sum check code SS are recorded in the point polling group information collection frame, and the RA stores the return data D1.
RA storing M461 and secondary sum check code SS
M462.

The RAM 47 is an area for storing the address AD received from the fire receiver RE in the system polling, the command CM1, and the primary sum check code PS, and a RAM 471 for storing the address AD.
The RAM 472 stores a command CM1 and the RAM 473 stores a primary sum check code PS.

The RAM 48 is used for selecting
An area for storing the address AD received from the fire receiver RE, the command CM1, and the primary sum check code PS. The RAM 481 stores the address AD, the RAM 482 stores the command CM1, and the primary sum check code PS. And a RAM 483 for storing.

[0146] The RAM 49 is used for selecting.
An area for storing its own address DA to be transmitted to the fire receiver RE, return data Da, and a secondary sum check code SS, and a RAM 49 for storing its own address DA.
1, a RAM 492 for storing the return data Da, and a RAM 493 for storing the secondary sum check code SS.

The interface IF41 is an interface for connecting the signal transmitting / receiving unit TRX4 and the microprocessor MPU4. The interface IF 42 includes a switch SW such as a push button type and a microprocessor MPU.
4 is an interface for connecting the C.I. The interface IF43 is an interface for connecting the light emitting circuit LEDC as a response lamp and the microprocessor MPU4.

The signal transmitting / receiving unit TRX4 is provided with a signal transmitting / receiving unit TX.
It is the same as RX1. Also, the bit timer Tb
Is a management timer used to prevent a transmitter calling pulse, an address transmission signal, and an address transmission signal, which will be described later, from being output overlapping each other.

Next, the fire receiver RE in the above embodiment is described.
Will be described.

FIG. 9 is a system flowchart showing the operation of the fire receiver RE in the above embodiment.

First, after starting up by turning on the power of the fire alarm system, initialization is performed (S
1) For example, the transmission abnormality detection variable fx for all addresses is set to “0”. Then, a selecting command such as turning off the confirmation light is transmitted to the operation unit OP of the fire receiver RE.
It is determined whether or not the operator has input from (S2), and if the selecting instruction has not been input (S2).
2) It is determined whether or not the operator has input a system polling command from the operation unit OP of the fire receiver RE (S).
3) If the system polling command has not been input (S3), point polling is performed (S4).
Returning to step S2, the above operation (S2 to S4) is repeated.

When the operator inputs a selecting command such as turning off the confirmation lamp (S2), the selecting is performed (S6). When an operator inputs a system polling command (S3), system polling is performed (S5). Therefore, when the operator does not input from the operation unit OP (S3), point polling is performed (S4).

The details of each of the polling and selecting are input by the operator from the operation unit OP of the fire receiver RE, and based on the input, the address AD, the command CM1, the command CM2, the primary sum check code PS Are determined, and various polling and selecting operations are performed.

FIGS. 10 to 12 are flowcharts specifically showing the operation of the point polling (S4) in FIG.

Here, the operation of the “group information collection frame” mainly corresponds to S401 to S426, and the operation of the “transmitter detection frame” mainly corresponds to S427 to S433.

First, a polling command (AD = FFh)
Command for returning status information in point polling (CM
1 = 01h), and each of the group designation codes (for example, CM2 = 00h) in the point polling is set to R
It is stored in the AM 141, the RAM 142, and the RAM 143 (S401 to S403).

Next, the primary sum check code PS is obtained by adding the addresses AD of the RAMs 141 to 143 and the commands CM1 and CM2 (S404). This primary sum check code PS is stored in the RAM 144 (S4
05). Then, the address AD, the commands CM1, CM2, and the primary sum check code PS stored in the RAMs 141 to 144 are sequentially transmitted from the signal transmitting / receiving unit TRX1 (S406). And the management timer Tsl
t is started (S407), and m is reset to 0 (S408). Here, m is a hexadecimal number indicating the terminal number within the group. If the timer Tslt has already been started, a reset for clearing and restarting is performed (S408).

Next, the management timer Tslt sets the start time Tsm of the slot for receiving the return data D1 and the secondary sum check code SS returned from the terminal device whose terminal number in the group is m. It is determined whether or not there is (S409). The start time Ts of the slot
A small letter m of m indicates a terminal number within a group. When the management timer Tslt indicates the start time Tsm of the slot (S409), the state is set to the reception enable state (reception possible state) (S410).

On the other hand, when the management timer Tslt is less than the slot start time Tsm, the management timer Tslt
It waits until lt reaches the slot start time Tsm (S409). Until the management timer Tslt indicates the slot start time Tsm, the fire receiver RE does nothing to the terminal device (becomes the first waiting field WF1). In the reception enabled state, the first
When the return data D1 is received from the terminal device within the predetermined time T1 (S411, S434), the return data D1 is stored in the RAM.
121 (S412).

Here, the first predetermined time T1 is from the slot start time Tsm to the slot start time Tsm + 1 of the terminal device having the terminal number (m + 1) in the group which is one larger than the terminal number in the group of the terminal device. It's time. The management timer Tslt determines whether the first predetermined time T1 has been exceeded (S434).

Next, when the secondary sum check code SS is received from the terminal device within the second predetermined time T2 (S413,
S435), the secondary sum check code SS is stored in the RAM 12
2 (S414).

Here, the second predetermined time T2 is a time from the slot start time Tsm to the slot end time Tem for the terminal number m in the group. The determination as to whether or not the second predetermined time T2 has been exceeded is also made by the management timer Ts.
lt is performed (S435). Further, a sum check is performed based on the secondary sum check code SS stored in the RAM 122 to determine whether the transmission from the terminal device to the fire receiver RE has been normally performed.

That is, the RAMs 141 to 144,
The addresses AD stored in the RAM 121,
Commands CM1, CM2, primary sum check code P
S, the return data D1 is read (S414 to S419),
The secondary operation code SC1 is obtained by adding the address AD, the commands CM1, CM2, the return data D1, and the primary sum check code PS (S42).
0).

The obtained secondary operation code SC1 is represented by R
Secondary sum check code S stored in AM 122
It is determined whether it matches S (S422). If the result of the sum check matches (S422), it can be determined that the transmission has been normally performed.
In the case of the first time (S423), since the transmission abnormality detection variable fx is 0, the reception is prohibited as it is (S423, S42).
4) Here, the reading of data from the terminal device having the terminal number m in the group ends. Therefore, the data being received at this point is discarded.

Next, m is incremented by 1 (S42).
5) The above operation (S409 to S424) is repeated to collect the return data D1 and the secondary sum check code SC1 from the terminal device whose terminal number in the group is m + 1. Then, the above operations (S409 to S426) are repeated until the value of m becomes 10h, and when m exceeds 10h (S426), the process proceeds to step S427. That is, m
Exceeds 10h, the collection of the return data D1 and the secondary sum check code SS from all of the 16 terminal devices in the group has been completed, and the process proceeds to step S427.

In this way, each return data D1 of each terminal device belonging to one group is sequentially returned as a group of group information in slots prepared for each terminal device, and collected by the fire receiver RE. Is done.

If the return data D1 is not received within the predetermined time Tsm + 1 from the terminal having the address x, the non-response processing is performed for the terminal having the address x (S436). Here, the non-response process refers to incrementing the transmission abnormality detection variable fx by 1 for the terminal device having the address x. This means that an error is displayed on the display DP of the device RE (indicating that there is a transmission error). Here, the variable fx indicating the number of transmission error detections is stored in the RAM 16 for each address.

Also, when the secondary sum check code SS is not received from the terminal having the address x in the predetermined time Tem (S435), the transmission abnormality detection variable fx
Is incremented by 1 to perform a no-response process (S436). When the transmission abnormality detection variable fx becomes “3”, an abnormality display (display of transmission abnormality) is performed on the display unit DP of the fire receiver RE. Note that, as above,
The transmission abnormality detection variable fx is stored in the RAM 16 for each address. Further, when the secondary operation code SC1 does not match the secondary sum check code SS (that is, when the result of the sum check does not match) (S422), an erroneous response process is performed (S437). Here, in the erroneous response process, similarly to the case of the non-response process, when the transmission abnormality detection variable fx is incremented by 1 and the transmission abnormality detection variable fx becomes “3”, the display of the fire receiver RE is displayed. Department DP
Is displayed (display indicating that there is a transmission error). The transmission error detection variable fx is stored in the RAM 16 for each address.
Is stored in

When the point polling is performed for the second time or later, whether or not the transmission abnormality detection variable fx is 0 (that is, the terminal device that has been receiving data up to the previous time has received no response in the previous point polling). It is determined whether or not the process or the erroneous response process has been performed, that is, whether or not fx stored for each address in the RAM 16 is 0 (S423). In the previous case, when the abnormality is not detected (that is, when fx is 0) (S42)
3), the reception is prohibited (S424).

On the other hand, when the abnormality is detected (that is, when the transmission abnormality detection variable fx is not 0) (S42)
3), reset the transmission abnormality detection variable fx to 0 (S4)
38). Therefore, unless transmission abnormality detection such as non-response processing or erroneous response processing is performed three times in a row, no abnormality is displayed (there is no indication that transmission is abnormal). The transmission abnormality detection variable fx that has become “0” is stored in the RAM 16 for each address.

That is, in the above embodiment, in a disaster prevention facility in which a plurality of terminal devices such as a fire detector, a repeater, a transmitter, and a controlled device are connected to a receiving unit, no response processing, erroneous response When a transmission error such as processing occurs, a transmission error detection unit that detects the transmission error, a storage unit that stores the number of detections of the transmission error, and the number of detections stored in the storage unit is equal to or more than a predetermined number. And a transmission error display means for displaying that a transmission error has occurred. Further, in the above embodiment, in a disaster prevention facility in which a plurality of terminal devices such as a fire detector, a repeater, a transmitter, or a controlled device are connected to a receiving unit, even when a transmission error occurs in a terminal device, polling is performed. It is a disaster prevention facility to continue.

With this configuration, even if a transmission error such as a no-response process or an erroneous response process occurs during the execution of the point polling, the point polling can be continued. In this case, it is possible to prevent an increase in the total time required for the polling performed on the terminal devices belonging to the disaster prevention equipment.

Next, the operation of the “transmitter detection frame” (mainly the operations of S427 to S433) will be described.

The microprocessor MPU1 determines whether or not the management timer Tslt indicates the transmitter slot start time Tp (S427). Management timer Tslt
Indicates the transmitter slot start time Tp (S
427), a transmitter detection frame is started, a reception enable state (reception enabled state) is set (S428), and a transmitter calling pulse PC is transmitted from the signal transmitting / receiving unit TRX1 (S4).
29).

Note that the transmitter calling pulse PC is equal to the transmitter P
Also serves as a start bit of a return signal to be returned to the fire receiver RE. The transmitter calling pulse PC is a calling pulse for calling not only the transmitters P in the group but also all the transmitters P belonging to all groups. Accordingly, the fire receiver RE can collect the addresses ADp of the transmitting transmitters P belonging to all the groups.

Next, when the address ADp of the transmitter P is received from the transmitter P that is issuing a report within the third predetermined time T3 (S430, S439), the address ADp is stored in the RAM 15 (S431). Then, the fact that the transmitter P has issued an alarm and the address of the transmitter P are displayed on the fire receiver RE (S432), and the command (group designation code) C
M2 is incremented by one and stored in the RAM 143 (S433). In this case, the old group designation code CM
The memory for 2 is erased. Note that the "third predetermined time T3" is a time from the transmitter slot start time Tp to the transmitter slot end time Tep, and the third predetermined time T3.
The management timer Tslt determines whether or not the number has exceeded three.

On the other hand, when it is determined that the management timer Tslt is less than the transmitter slot end time Tep (S
439), until the transmitter slot end time Tep
The management timer Tslt waits (S430).

[0178] Also, the transmitting device P from the transmitting
Is not received by the fire receiver RE until the third predetermined time T3 has elapsed (S430,
S439), similar to the above, the group designation code CM2
Is incremented by 1 and stored in the RAM 143 (S4
33). At this time, the storage of the old group designation code CM2 is deleted.

If the group designation code is the last group number in step S433, the process returns to the first group number.

As described above, the addresses ADp of all the transmitting transmitters P belonging to all the groups are set to the transmitting transmitters P.
The address information is returned to the fire receiver RE during the transmitter slot and collected by the fire receiver RE. Then, the group designation code (command) CM2 is incremented by 1 (S433), and the second waiting field WF in which the fire receiver RE does nothing to the terminal device.
2 (not shown), the microprocessor MP
U1 returns to step S2 shown in FIG. 9, and when there is no selecting instruction and system polling instruction (S2,
S3) For the next group of group number 1, point polling including a group information collection frame is performed.

In the second waiting field WF2, signal transmission redundancy is provided in order to absorb variations in the return timing between the return data D1 returned from each terminal device and the secondary sum check code SS. . Due to the redundancy in signal transmission, the processing of the terminal device can be reduced, and the byte frames for transmission can be synchronized.

Then, the group numbers 2, 3,..., 15
After the point polling composed of the “group information collection frame” and the “transmitter detection frame” is sequentially completed for each of the groups, instead of a state information return command (CM1 = 01h), not shown, The type information ID return command (CM1 = 00h) is sent to the address AD,
By transmitting the command CM2 together with the command from the fire receiver RE, the group numbers 0, 1, 2, 3,.
5 for each group in order, type information ID
And a point polling composed of a “group information collection frame” and a “transmitter detection frame”.

The operation of the point polling at this time is basically the same as the "group information collection frame" for collecting state information except that the type information ID is sent instead of sending the state information as the return data D1. This is the same as the operation of the point polling. After the point polling is completed, a point poll consisting of a "group information collection frame" for collecting state information and a "transmitter detection frame" and a "group information for collecting type information ID" will be described below. Point polling composed of a "collection frame" and a "transmitter detection frame" is alternately repeated.

In the above embodiment, the transmission frame length management timer Tf is provided in the fire receiver RE, the transmission frame length management timer Tf is started prior to step S2, and the transmission frame length management timer Tf is not overflown. Then, the operation up to step S433 is executed, or if the second waiting field WF2 does not end, the point polling in the group where the point polling is being performed is forcibly ended, and the group designation code CM2 is set. The point polling may be started for the next group by incrementing by one.

Through the above operation, the group G
The status information of each terminal device belonging to 0 to G15 is collected for each group, and at the same time, all the transmitters P which are in the alerts belonging to all the groups belong to one group by one point polling.
Address can be collected. Then, based on the collected data, the fire receiver RE can detect a terminal device that has detected an abnormality or the like.

In the above description of the operation, point polling composed of a “group information collection frame” for collecting status information and a “transmitter detection frame” and a “group information collection frame” for collecting type information IDs And the point polling constituted by the "transmitter detection frame" are alternately repeated. However, always, "group information collection frame" that collects status information
Point polling composed of a "group information collection frame" and a "transmitter detection frame" for executing point polling composed of a "transmitter detection frame" and collecting type information ID from the operation unit OP Only when the operator inputs a command to the fire receiver RE to perform point polling composed of a “group information collection frame” and a “transmitter detection frame” for collecting type information IDs, It is also possible to collect the type information ID of the terminal device and then return to the routine for performing the point polling composed of the “group information collection frame” and the “transmitter detection frame” for collecting the status information again. Good.

[0187] In the "point polling" for collecting the type information ID, the transmitter detection frame may be omitted.

FIG. 13 shows the operation unit O in the above embodiment.
It is a flowchart which shows the specific example at the time of an operator inputting the command to perform a system polling to the fire detector RE from P (S5).

When there is an input command from the operation unit OP (S
5), RAM 171 and RAM 17 by system polling
2 stores the address AD and the command CM1 (S
501, S502), a primary sum check code PS is obtained by adding the address AD and the command CM1 (S503). Then, the primary sum check code PS is stored in the RAM 173 (S50).
4).

Next, the address AD stored in the RAMs 171 to 173, the command CM1, and the primary sum check code PS are sequentially transmitted from the signal transmitting / receiving section TRX1 (S505), and the address AD and the command CM1 are transmitted. And the above-mentioned primary sum check code PS,
In order to prevent retransmission, the data is deleted from the RAM 17 (S506). Then, the process returns to step S2 in FIG.

In the above embodiment, the terminal AD is not responded to while the address AD, the command CM1 and the primary sum check code PS are being transmitted from the fire receiver RE. A response signal D1 notifying that the command CM1 transmitted from the terminal device has been received, and a secondary sum check code SS for confirming whether or not the transmission from the terminal device to the fire receiver RE has been performed normally. As in the case of the point polling shown in FIGS. 10 to 12, the terminal device may transmit the signal to the fire receiver RE.

FIG. 14 and FIG. 15 show that, in the above-described embodiment, an instruction to perform selecting from the operation unit OP is
It is a flowchart which shows the specific example in case an operator inputs into the fire receiver RE (S6).

When there is an input command from the operation unit OP (S
6) The address AD and the command CM1 in the selecting are stored from the RAM 181 and the RAM 182 (S601 and S602), and the primary sum check code PS is obtained by adding the address AD and the command CM1 (S603). . This primary sum check code PS is stored in the RAM 183 (S60).
4). Then, the address AD stored in the RAM 181 to the RAM 183, the command CM1, and the primary sum check code PS are sequentially transmitted from the signal transmitting / receiving unit TRX1.
It is sent (S605).

Next, the management timer Tslt is started (S606), and the management timer Tslt determines the self address DA of the terminal device returned from the terminal device having the terminal number m in the group, the return data Da, and the like. , The start time T4 of the slot for receiving the second sum check code SS is determined (S60).
7). When the management timer Tslt has reached the start time T4 of the slot (S607), the reception timer enters a reception enable state (reception enable state) (S608).

On the other hand, if the management timer Tslt has not reached the slot start time T4 (S608),
The management timer Tslt determines that the slot start time T4
(N in S609). Until the management timer Tslt indicates the slot start time T4, the fire receiver RE becomes the first waiting field WF1 in which the terminal device does nothing. Predetermined time T
5, when the self address DA of the self address terminal device is received from the terminal device (S609, S623), the self address DA of the terminal device is stored in the RAM 191 (S6).
10). The determination as to whether or not the predetermined time T5 has passed is performed by the management timer Tslt. Next, a predetermined time T
6 receives the return data Da from the terminal device (S6
11, S624), and stores the return data Da in the RAM 192 (S612). The management timer Tslt also determines whether or not the predetermined time T6 has been exceeded. Further, when the secondary sum check code SS is received from the terminal device within the predetermined time T7 (S613, S625), the secondary sum check code SS is stored in the RAM 193 (S61).
4). The management timer Tslt also determines whether or not the predetermined time T7 has been exceeded.

Further, the fire receiver RE
To determine if the transmission to
A sum check is performed based on the secondary sum check code SS stored in the AM 193. That is, the RAM 181
To the address AD stored in the RAM 183, the RAM 191 and the RAM 192, the command CM1,
The primary sum check code PS, the self address DA of the self address terminal device, and the return data Da are read (S6).
15 to S619), the secondary operation code SC2 is obtained by adding the address AD, the command CM1, the primary sum check code PS, the self address DA of the self address terminal device, and the return data Da (S620).

Then, the secondary operation code SC2 is stored in the RAM
It is determined whether or not it matches the secondary sum check code SS stored in 193 (S621). If the sum check results match, it can be determined that the transmission has been normally performed (S621), and the reception is prohibited as it is (S62).
2) Return to S2 in FIG.

When the address DA is not received from the terminal device within the predetermined time T5 (S609, S623),
No response processing is performed (display section DP of fire receiver RE)
Is displayed as an abnormal response indicating that there is no response) (S62)
6).

If the return data Da is not received from the terminal device within the predetermined time T6 (S624), or
Even when the secondary sum check code SS is not received from the terminal device within the predetermined time T7 (S625), the non-response process is performed (an abnormal display indicating a transmission error is displayed on the display unit DP of the fire receiver RE). Performed) (S626).

Further, when the secondary operation code SC2 does not match the secondary sum check code SS (when the result of the sum check does not match) (S621), an erroneous response process is performed (display unit of the fire receiver RE). An error is displayed on the DP indicating that there is a transmission error (S627).

The non-response processing (S626) or
Also in the case where the incorrect response process (S627) is performed, the reception is prohibited (S622), and the process returns.

FIG. 16 is a diagram showing a main flowchart of the repeater RP as an example of the terminal device in the above embodiment.

First, initial settings are made (U1), and a return timing (information return start time Tdm) is calculated from the terminal number in the group of the terminal (U2). If there is a received signal (U3), address AD, command CM1, CM
2. The primary sum check code PS is stored in the RAM 34, respectively.
1 to RAM 344 (U4 to U7).

Next, a primary operation code SC3 is obtained by adding the addresses AD of the RAMs 341 to 343 and the codes of the commands CM1 and CM2 (U8). It is determined whether the primary operation code SC3 matches the primary sum check code PS (U9).
If the result of the sum check of the received signal matches (U9), since the transmission has been normally performed, it is determined whether or not the content of the address AD is a polling command (U9).
10) If the command is a polling command, the command CM
It is determined whether or not the content of 1 is a point processing command (U11). Here, when the instruction is a point processing instruction (C
At (M1 = 0Xh), point processing is performed (U12).

If it is determined that the command is not a polling command (AD @ FF) (U10), a selecting process is performed (U14).

On the other hand, when it is determined that the instruction of the command CM1 is not a point processing instruction (CM1 ≠ 0Xh) (U1
1) Perform system processing (U13).

If there is no received signal (U3),
The state information is collected (U15), and the obtained state information is stored in the RAM 32. At this time, for example, the data for the immediately preceding five times has already been stored in the RAM 32, and the oldest state information among them is erased (U16, U17).

Here, when the on / off type fire detector F and the gas leak detector G are connected to the repeater, the repeater detects whether there is a fire signal or a gas leak signal, and the fire prevention is performed. The repeater detects an open state signal indicating an open state and a closed state signal indicating a closed state when door D is connected, and a ringing state when district bell B is connected. The state information is collected by the repeater detecting a ringing state signal indicating the state. The fire detector such as the photoelectric fire detector S and the transmitter P operate in the same manner as the above operation.

[0209] Even when the command CM2 is not sent from the fire receiver RE, such as in the case of system polling and selecting, basically the same operations as those described above are performed except that step U6 is not executed. .

By the way, when performing the above-mentioned sum check,
Each code is added, but depending on the code system, sum checks that should be different from each other may coincide by chance. For example, when addresses assigned to two terminal devices overlap, sum checks that should be different from each other coincide with each other.

In other words, when the terminal devices are different from each other but their addresses are the same, the return data is sent to the receiver at the same timing because the addresses are the same. In this case, there is no problem if the contents of the return data are the same, but a problem occurs if the contents of the return data D1 are different from each other.

That is, when the bit 0 of the return data D1 is set as a fire bit, the bit 0 is set to “1” when a fire occurs, and the bit 0 is set to “0” when a non-fire occurs, When "1" and "0" collide,
It becomes "0". Here, when one terminal device to which the same address is assigned detects a fire and the other terminal device detects a non-fire, the bit 0 of the one terminal device sends “1” and the other terminal device sends “1”. Although bit 0 of the terminal device transmits “0”, when “1” and “0” collide on the signal line L, the bit becomes “0”. Therefore, the fire receiver RE sets the bit 0 in the return data as “0”. Upon receiving “0”, it is determined that the terminal device assigned the same address has detected a non-fire. Therefore, the same address 2
Even if only one of the two terminal devices detects a fire, the fire information does not reach the fire receiver RE.

Therefore, the same address is assigned to 2
In order to ensure that the fire information always reaches the fire receiver RE when only one of the two terminal devices detects a fire, the return signal is inverted and the inverted signal is signal line L
, And re-inverted by the fire receiver RE.

That is, in the above embodiment, a plurality of terminal devices including a fire detector, a repeater, a transmitter, or a controlled device are connected to a fire receiver via a signal line, and the terminal device is connected to the fire receiving device. By polling the machine, read predetermined terminal information from the terminal device, determine, display, or in the disaster prevention equipment to control the terminal device,
It has first signal inversion means provided at a connection between the fire receiver and the signal line, and second signal inversion means provided at a connection between the terminal device and the signal line.

In the above embodiment, a primary addition code creating means for adding an address code to be transmitted to a terminal device and an instruction code to create a primary addition code, an address code, an instruction code and a primary addition code A first transmission means for transmitting a code, the first receiver having a fire receiver, a first addition code generating means for generating a first addition code by adding an address code and an instruction code received from the fire receiver; First determining means for determining that the first addition code matches the primary addition code received from the fire receiver; and determining whether the first addition code matches the primary addition code. Secondary addition code creating means for creating a secondary addition code by adding return data to be returned to the receiver, an address code received from the fire receiver, an instruction code, and a primary addition code;
The terminal device has second sending means for sending the return data and the secondary addition code to the fire receiver. The terminal device further includes return data received from the terminal device, an address code to be transmitted to the terminal device, and an instruction code. A second addition code creating means for adding the primary addition code to create a second addition code, and a second addition code creating unit for determining whether the second addition code matches the secondary addition code received from the terminal device. (2) Disaster prevention equipment included in the fire receiver including the determination means.

In the above embodiment, when the secondary addition code and the second addition code are created, the primary addition code may be modified so as not to be included in the addition target. That is, the modified example includes a primary addition code creating means for adding an address code to be transmitted to a terminal device and an instruction code to create a primary addition code, and an address code, an instruction code, and a primary addition code. First sending means for sending,
A first addition code creating means for having the fire receiver add the address code and the command code received from the fire receiver to create a first addition code, the first addition code, and the first addition code received from the fire receiver. First determination means for determining that the primary addition code matches; and return data to be returned to the fire receiver when the first addition code and the primary addition code match, and reception from the fire receiver. A secondary addition code creating means for adding a received address code and an instruction code to create a secondary addition code, and second sending means for sending return data and the secondary addition code to the fire receiver. A second addition code creating means for adding return data received from the terminal device, an address code to be transmitted to the terminal device, and an instruction code to create a second addition code; A second discriminating means for discriminating whether or not the secondary sum code received from the terminal apparatus matches a disaster prevention facility included in the fire receiver.

The addresses AD and DA are examples of the address code, the commands CM1 and CM2 are examples of the instruction code, and the return data D1 and Da are examples of the return data.

FIG. 17 is a block diagram showing the configuration of the repeater R in the above embodiment.
It is a flowchart which shows the operation | movement of the point process in P.

Here, the microprocessor MPU3 is
It is determined whether or not the group to which it belongs is called (U101). More specifically, when it is determined that its own group number matches the lower digit of the command CM2 (U1).
01), it is determined that the group to which the user belongs is specified, and the following operation is performed to return the state information of the user to the fire receiver RE.

First, in order to determine the contents of the point processing, it is determined whether or not the received command CM1 is a status information return command (U102). The status information is read, and the status information is stored in the RAM 351 as return data D1 (U103). Then, the return timing management timer Td is started (U104). If the timer Td has already been started (U104), the timer Td is cleared and restarted to reset.

Next, the timer Td sets the information return start time Td.
It is determined whether or not m is indicated (U105). Here, a small letter m in the information return start time Tdm indicates a terminal number in a group. The timer Td determines the information return start time T
dm (U105), the RAMs 341 to RA
M344, the address AD, the command CM1, the command CM2, the primary sum check code PS, and the return data D1 stored in the RAM 351 are read out (U106 to U110), and the address AD, the command CM1, the command CM2, the primary sum are read. By adding each code of the check code PS and the return data D1, a secondary sum check code SS is obtained and stored in the RAM 352 (U111). And RAM 351 and RAM
The return data D1 and the secondary sum check code SS stored in 352 are sequentially transmitted from the signal transmitting / receiving unit TRX1 (U113).

On the other hand, when the microprocessor MPU3 determines that its own group number does not match the lower digit of the command CM2 (U101), it determines that the group to which it belongs belongs has not been specified, returns, and executes point processing. Not performed.

On the other hand, if the received signal is not a status information return command (CM1 ≠ 01h) (ie, type information I
D return command (when CM1 = 00h) is (U1
02), the self type information I stored in the ROM 32
D is read and stored in the RAM 351. And, below,
Steps U104 to U113 are executed. The operations in steps U104 to U113 are basically the same as those in the above case, except that the own type information ID is sent to the fire receiver RE as return data D1 instead of returning the state information. is there.

Further, the timer Td sets the information return start time T
When it is determined that the dm does not indicate dm (U105),
Wait until the information return start time Tdm is reached.

In steps U102 to U105, the fire receiver RE side is the first waiting field WF1 in which the terminal device does nothing.
409) Therefore, the repeater RP can execute data analysis of a fire signal or the like obtained from the on / off type fire detector F or the like connected to itself under favorable conditions.

In the above embodiment, the repeater RP is taken up as an example of the terminal device, and the point processing is described. However, the terminal device is not limited to a fire detection device such as another photoelectric fire detector or a thermal fire detector. The point processing operation in this case is basically the same as the point processing operation in the repeater RP. That is, when the terminal device is, for example, the photoelectric fire detector S, the light emitting circuit L is generated by the generation of the clock pulse from the clock generation source.
The light emitting diode LD connected to the DC periodically emits light, and the photodiode PD connected to the light receiving circuit PDC receives light scattered by smoke among the emitted light, and detects smoke density. , Except that the status information is collected, it is basically the same as the point processing operation executed in the case of the repeater RP.

In the above embodiment, the information return start time Tdm is calculated from the own terminal number m in the group (U2), and the larger the terminal number m in the group of each terminal device becomes (the fire reception time). The information return start time Tdm is set to be delayed as the distance from the device RE to the terminal device becomes longer.

When calculating the information return start time Tdm, for example, a table of the terminal number m within the group and the information return information is stored in advance in a predetermined ROM of the terminal device, and the terminal number m within the own group is stored. , A corresponding information return start time may be obtained. Also,
The information return start time Tdm is the same as the start time of the slot for the in-group terminal number m generated by the fire receiver RE. Based on the information return start time Tdm, the status information of each terminal device is sequentially returned to the fire receiver RE according to each slot provided corresponding to each terminal device.

FIGS. 18 and 19 are flowcharts showing the operation of the point processing in the transmitter P as an example of the terminal device in the above embodiment.

First, initial settings are made (U201).
The response to the group information collection frame in steps U101 to U113 shown in FIG. 7 is executed (U20
2). Then, within a predetermined time T1a (U217), each of the transmitters P determines whether or not each of the transmitters P is issuing a warning by determining whether or not the push button SW is pressed (U2).
03). That is, during the predetermined time T1a, the push button SW
Is pressed and it is determined that the alarm is being generated (U203, U21
7) It is determined whether or not each transmitter P has detected the transmitter slot generated by the fire receiver RE within the predetermined time T2a (U204).

On the other hand, if it is determined that the push button SW has not been pressed even after the predetermined time T1a has elapsed and no alarm has been issued (U203, U217), the routine returns. A timer provided in the work area RAM 41 determines whether or not the predetermined time T1a has elapsed. The timer is started together with the initial setting, and is started when the initial setting is already started. Is reset by clearing and restarting at the time of the setting. Also, the following predetermined times T2a and T3a are the same as in the case of the predetermined time T1a.

When each transmitter P detects the transmitter slot generated by the fire receiver RE within the predetermined time T2a (U204, U218), the value b (shown in decimal) of the transmission bit number counter is used. Is set to "7" (U205). “Address AD.b” indicates a number higher by b bits than the least significant bit of the address of the transmitter P. Thus, for example, if b = 0,
Address AD. b indicates the least significant bit. If b = 7, the address AD. b indicates the most significant bit. Note that, as described above, the address of each transmitter P is indicated by an 8-bit binary number.

If the transmitter P detects the transmitter calling pulse transmitted from the fire receiver RE within the predetermined time T3a (U206, U219), the bit timer Tb is started (U207). Here, although not shown, it is determined whether or not its own address has been transmitted in the previous point polling, and if it has been transmitted, the process returns. This is to enable the fire receiver RE to sequentially detect the transmitters P that have been issued by repeating the point polling in ascending order of address. Thereafter, when the timer Tb has passed a predetermined time (U208), the address AD. b to start the timer (U209).

If the predetermined time has not elapsed from the timer Tb (U208), the process waits. The predetermined time here is a time corresponding to the width of the transmitter calling pulse. This predetermined time is a time provided so that the transmitter calling pulse from the fire receiver RE and the address transmission signal from the transmitter P do not overlap. Therefore, for the predetermined time, for example, a time corresponding to one bit (for example, 1/2400 seconds) is employed. On the other hand, when each transmitter P does not detect the transmitter detection pulse transmitted from the fire receiver RE within the predetermined time T3a (U206, U21
Return to 9).

On the other hand, when each transmitter P does not detect a transmitter slot (U204, U218), the process returns.
Here, the transmitter slot is detected by the transmitter P determining that all the data return slots in the group information collection frame have been completed.

Then, a bit higher by b bits from the least significant bit of the address ADp of the transmitter P (the address ADp is stored in the RAM 44) is transmitted, and the timer Tb is started again (U209). P
From the least significant bit of the address ADp sent from the address b is 1 (U210, U2
11) Monitor and determine whether the state of the signal line is 0 or 1 over a predetermined time (U214). That is, the transmitter P monitors and determines whether a bit b higher than the least significant bit of the address transmitted from another transmitter P is 0 or 1 within a predetermined time.

Here, if the above-mentioned predetermined time has elapsed while the state of the signal line is 1 (U214, U215), the value of b is decremented by 1 (U212). On the other hand, when the state of the signal line L becomes 0 within the above-mentioned predetermined time (that is, when the transmitter P having an address smaller than its own is transmitting), the other transmitter P is transmitting the address. It is determined that there is (U214), and the transmission of the transmitter address to the transmitter P is forcibly terminated (U216). The predetermined time is, for example, a 1-bit width (for example, 1/2400) of an address transmission signal transmitted by the transmitter P.
S) has been adopted. The one-bit width time of the address transmission signal is a time for successively comparing the number of each digit of a binary number represented by eight bits transmitted from each transmitter P as an address.

If the bit higher by b bits from the least significant bit of the address transmitted from the transmitter P is "0" (U210), a predetermined time is waited until the timer Tb overflows (U211). The value of 1
It is decremented (U212). Here, the reason why the waiting time is provided is that one bit of the address transmission signal from the transmitter P does not overlap with one bit of the address transmission signal transmitted next from the same transmitter P. That's why.

If b is 0 or more (U21
3) Since all bits of each address of the address ADp of the transmitter P are not transmitted, the above operation (U209 to U213)
repeat. On the other hand, if b is less than 0 (U213),
Since all bits of each address of the address ADp of the transmitter P have been transmitted, the transmission is terminated.

By repeating the above operation (routines from U209 to U213), the address A of the transmitter P is obtained.
The bits of each order of Dp are sequentially transmitted from the higher order, and
Although the transmitter P compares the transmission data and the reception data in bit units and transmits the active level, the transmitter P that has received the inactive level stops transmitting, and finally, The receiver RE can obtain the address of only one transmitter as the alarm transmitter P address information.

As described above with respect to the group information collection frame, one transmitter P transmits its own transmitter P
After the transmission of the address has been completed, a check code may be transmitted so that the fire receiver RE can confirm whether or not the transmission has been normally performed.

Although the number of terminal devices belonging to one group is set to 16 in the above embodiment, a number other than 16 may be set.
Although it is set to 6, it may be divided into groups other than 16.

When an address is assigned to each terminal device, instead of using a two-digit number and expressing as described above, the lower digit is a group number and the upper digit is a terminal number within each group. May be displayed using a two-digit hexadecimal number, and if all terminal devices can be specified, the display is not limited to two digits and is displayed with a plurality of digits on each of a plurality of terminal devices. Assign an address, display the group number by several digits in the address, and
The terminal number within each group may be displayed.

In the above-described embodiment, when a plurality of transmitters P issue an alarm, each of the issuing transmitters P transmits 2 bits of 8 bits.
By comparing the magnitude of each digit of the address expressed as a base number in order from the highest order, the smallest address among the addresses of the transmitters P that issued the alarms is given priority and transmitted to the fire transmitter PRE. However, instead of doing so, the comparison may be made sequentially from the least significant bit of the address. In other words, the transmitter P transmits its own address sequentially from the lower bit, and the transmitter P
By comparing the magnitude of each digit of the address expressed as an 8-bit binary number in order from the least significant bit, the address of one of the dispatched transmitters P is given priority. You may make it transmit to the fire receiver RE.

FIG. 20 shows the operation (U1) of the system processing of the repeater RP as an example of the terminal device in the above embodiment.
It is a flowchart which shows 3).

Before entering the system processing (U13), the address AD, command CM1, and primary sum check code PS stored in the RAM 341, RAM 342, and RAM 344 are respectively stored in the RAM 361,
Transfer to RAM 362, RAM 363.

First, when the command CM1 received by the microprocessor MPU3 is a fire recovery command (U30
1) Fire signal receiving circuit FSR and district sound control circuit L
Restore AC etc. and return. On the other hand, if the command CM1 is not a fire restoration command (U301) but is a storage restoration command (U303), the fire signal receiving circuit FSR is restored (U304) and the process returns. If the command CM1 is not the storage restoration command (U303) but the command CM1 is the local sound stop command (U305), the local sound control circuit LAC is turned off (U306) and the routine returns. If it is not a regional sound stop command (U305) but is an emergency broadcast stop command (U
307), and turns off the emergency broadcast control circuit BAC (U3
08), and return. If it is not an emergency broadcast stop command (U307), the process returns.

The operation of the system processing in the fire detector such as the photoelectric fire detector S is basically the same as that of the repeater except that it is not controlled by the district sound stop command and the emergency broadcast stop command. This is the same as the operation of the system processing already described for the RP. In addition, except that it is not controlled by the accumulation restoration command, the district sound stop command, and the emergency broadcast stop command, the operation in the transmitter P is basically the same as the operation of the system processing already described for the repeater RP. The same is true.

FIG. 21 and FIG. 22 show the case of the above embodiment.
It is a flowchart which shows the specific operation | movement (U14) of the selecting process in the repeater RP as an example of a terminal device.

Before entering the selecting process (U14), the address AD and the command CM stored in the RAM 341, the RAM 342, and the RAM 344, respectively.
1. The primary sum check code PS is stored in the RAM 3
71, RAM 372 and RAM 373.

First, the microprocessor MPU3 determines whether or not the own address of the repeater RP matches the received address AD (U401). When the self address and the received address AD match (U40
1), it is determined that the repeater RP is designated, and the following operation is performed to return its own status information to the fire receiver RE.

That is, in order to determine the contents to be selected, it is determined whether or not the received signal is a type information return command (CM = 00h) (U402).
If the command is a type information return command (U402), the type information ID and the self address are read from the ROM 32, and R
It is stored in the AM 382 and the RAM 381 (U403).
Then, RAM 371, RAM 372, RAM 373,
The address AD, the command CM1, the primary sum check code PS, the self address DA, and the return data Da stored in the RAM 381 and the RAM 382, respectively, are read (U415 to U419), and the address AD and the command C are read.
A secondary sum check code SS is obtained by adding each code of M1, the primary sum check code PS, the self address DA, and the return data Da (U42).
0), the secondary sum check code SS is stored in the RAM 383.
To be stored. And RAM 381, RAM 382, R
The own address DA, return data Da, and secondary sum check code SS stored in the AM 383 are sequentially transmitted from the signal transmitting / receiving unit TRX3 (U421).

On the other hand, the microprocessor MPU3 determines that the received signal is not a type information return instruction (U4
02), the received signal is a status information return command (CM1 = 0)
1h) (U404), the status information is read from the RAM 32 and stored in the RAM 382, and the self address is read from the ROM 32 (not shown).
(U405). And hereafter, step U4
15 to U421 are executed. In addition, own type information ID
Except that the status information is sent to the fire receiver RE as return data Da, except that U415 to U4
The basic operation of 21 is the same as the operation described above.

On the other hand, it is determined whether or not the command CM1 received by the microprocessor MPU3 is a fire recovery command (U406). If the command CM1 is a fire recovery command (U406), the fire signal receiving circuit FSR and the area acoustic control The circuit LAC and the like are restored (U407). Command C
If M1 is not a fire recovery command but a storage recovery command (U408), the fire signal receiving circuit FSR is recovered (U
409). If the command CM1 is not a storage restoration command but a district sound stop command (U410), the local sound control circuit LAC is turned off (U411). If the command CM1 is not a district sound stop command but an emergency broadcast stop command (U412), the emergency broadcast control circuit BAC
Is turned off (U413). The command CM1 is
If it is not an emergency broadcast stop command (U412), the process returns.

In the point polling of the above embodiment, the command CM1 discriminates whether to return status information or type information ID of various data, and the command CM2 specifies a group. On the contrary, the command CM2 distinguishes whether to return the status information or the type information ID among the various data, and the command CM1 specifies the group. Good.

In the system polling and selecting of the above embodiment, the command CM2 is not used. However, instead of this, the confirmation light extinguishing command for extinguishing the confirmation light of the fire detector is issued. Is transmitted to the terminal device by the fire receiver RE, the command CM1 is transmitted as a command to control the confirmation light, the command CM2 is transmitted as a command to turn off the light, and the address AD and the primary sum check code PS are sequentially transmitted. You may make it.

Further, in the above-described embodiment, the selection of the repeater RP has been described. However, in the case of a fire detector such as the photoelectric fire detector S, control by the local sound stop command and the emergency broadcast stop command is performed. In the case of the transmitter P, the fire detector, except that it is not controlled by the storage restoration command, the district sound stop command and the emergency broadcast stop command,
The selecting operation in each of the transmitters P is as follows.
The selecting operation for the repeater RP is basically the same.

In the point polling of the above embodiment, when the return data D1 and the secondary sum check code SS are sequentially received from the terminal devices belonging to one group, the status information or the type information ID is received. The width of the above-mentioned slot is set to increase as the terminal number m in the group increases.
For example, FIG. 23 shows the slot width when the point polling is performed for the group of group number 1, but the slot width is increased so that the slot width becomes wider as m = 0h to m = 10h. You have set. This is because the frequencies of the oscillators of the MPU1, MPU2, MPU3, and MPU4 used for the fire receiver RE and the terminal device have an error of 1 in the frequency specified in the product.
% Is included to absorb this error.
In other words, by making each slot width wider, each return data D1 transmitted from each terminal device due to an error in the frequency of each oscillator and the secondary sum check code SS
And the timing at which the fire receiver RE receives them can be absorbed.

Before entering the system processing or the selecting processing, the RAM 341, the RAM 342,
Although the address AD of 344, the command CM1, and the primary sum check code PS are moved to another RAM,
Without transferring, the RAM 341, RAM 342, RA
The contents of M344 (address AD, command CM1, primary sum check code PS) may be used as they are in system processing or selecting processing.

In the above embodiment, the transmission abnormality is detected by the point polling. However, the transmission abnormality is detected not only by the point polling but also by the system polling and the selecting in the same manner as described above. You may.

Further, in the above embodiment, when calculating the secondary sum check code and the secondary operation result code, the primary sum check code PS is used, but the operation is performed without using the primary sum check code PS. To calculate the secondary sum check code and the secondary operation result code.

In the above embodiment, two return data and a secondary sum check code are simultaneously transmitted from the two fire detectors, and an active bit constituting one return data and a non-return data constituting the other return data are transmitted. When the active bits are transmitted from the fire detectors at the same timing, the fire receiver may employ a configuration in which only the active bits forming one of the return data are detected with priority. Good.

FIG. 24 is a block diagram showing a photoelectric fire detector Sa as an example of a terminal device according to another embodiment of the present invention.

FIG. 25 is a block diagram showing an example of a fire receiver REa according to another embodiment of the present invention.

In the photoelectric fire detector Sa, the IF 23 connected to the signal transmitting / receiving unit TRX2 and the signal transmitting / receiving unit T
A signal inverting circuit SIC1 is provided between RX2 and RX2 as signal inverting means that operates only when sending back data and a secondary sum check code.
In a, a signal inversion circuit SIC2 is provided between the IF 13 connected to the signal transmission / reception unit TRX1 and the signal transmission / reception unit TRX1, as signal inversion means operating only in the terminal device field. Signal inversion circuit S
The IC2 is a circuit that converts an active bit into an inactive bit and converts an inactive bit into an active bit.

The other conditions are the same as those in the conventional example. That is, the active bit is converted by the signal transmitting and receiving unit TRX1 to be a low signal on the signal line L, and the inactive bit is converted by the signal transmitting and receiving unit TRX1 to be a high signal on the signal line L, and vice versa. ,
The low signal on the signal line L is converted into an active bit by the signal transmitting / receiving unit TRX1, and the high signal on the signal line L is converted into an inactive bit by the signal transmitting / receiving unit TRX1. When the low signal and the high signal on the signal line L overlap, the signal becomes a high signal.

Since the signal inverting circuit SIC2 is provided as described above, the fire receiver receives the active bit when an active bit and an inactive bit are transmitted at the same timing from a plurality of fire detectors.

Next, the point polling and the point processing of the above embodiment will be specifically described using numerical values (mainly S401 to S426, U4 to U12, U101).
~ U113).

When the fire detector Sa detects a fire, the MPU 2 of the fire detector Sa sends 01h as status information D1, and when no fire is detected, the MPU 2 of the fire detector Sa 00 as the state information D1
h.

Here, the fire detectors D11 and D22 are constituted by fire detectors Sa, and the same addresses 1 are assigned to the fire detectors D11 and D22, and the fire detector D11 detects a fire. It is assumed that the fire detector D22 has not detected a fire.

The address AD, the command CM1, the command CM2, and the primary sum check code PS are FFh, 01h, 00h, 00h (8
When expressed in binary numbers of bits,
1,000,0000001, 0000000000, 00000
Suppose that the code indicated by 000) is transmitted from the fire receiver REa.

The MPU 2a of the fire detector D11 is
01h (00000001 when represented by an 8-bit binary number) is transmitted as return data D1a indicating that a fire has occurred, and 01 as the secondary sum check code SS1a.
h.

On the other hand, the MPU 2b of the fire detector D22 sends 00h (00000000 when represented by an 8-bit binary number) as return data D1b indicating that there is no fire.
Also, 00h is transmitted as the secondary sum check code SS1b.

In the above case, when the active bit and the inactive bit are sent out simultaneously to the signal line L (when the signals collide), the fire receiver REa is configured to receive only the active bit. The fire receiver REa receives 01h as data and 01h as a secondary sum check code, and the fire receiver REa recognizes that the fire detector whose address is 1 has detected a fire.

FIG. 26 is a diagram showing signals from the two fire detectors D11 and D22 and signals on the signal line L in the above embodiment.

In the conventional disaster prevention equipment, if the same address is erroneously assigned to two terminal devices, one of the terminal devices generates fire information and the other terminal device generates the fire information. Otherwise, there is a problem that the fire information is not transmitted to the fire receiver, and a problem that the transmission abnormality is not detected.

In order to solve the problem of the conventional example, in the above-described embodiment, a unique sum check is calculated, and the method of calculating the unique sum check will be specifically described below.

First, when calculating the sum check, the number of active bits in each code transmitted to the signal line L is counted, the count value is inverted, and a value obtained by deleting the most significant bit of the inverted value is used. I do. The maximum value of the active bits is 8 × 4 + 8 × in the case of selecting.
3 = 56 bits.

For example, if the address AD = FFh, the command CM1 = 01h, the command CM2 = 03h, and the return data D1 = 07h, the address AD = FFh is set to 2
The number of active bits is "11111111" in hexadecimal, and the number of active bits is 8 in hexadecimal. Command CM1 = 0
If 1h is represented by a binary number, it is "00000001",
The number of active bits is one, which is 1h when the number of active bits is represented by a hexadecimal number. Command C
When M2 = 03h is represented by a binary number, "00000011" is obtained.
The number of active bits is two, and the number of active bits is 2h in hexadecimal.

The address AD, command CM
1, the number of each active bit in CM2 8h, 1h,
When 2h is added, 8h + 1h + 2h = 0Bh.
When this 0Bh is represented by a binary number, it becomes "00001011", and when it is inverted, it becomes "11110100".
Expressing this as a hexadecimal number results in F4h. And
The highest-order bit of “11110100” representing this F4h in binary is deleted to obtain “01110100”, and 74h representing this in hexadecimal is the primary sum check code P
S.

The above F4h is represented by a binary number “11”.
To delete the most significant bit of “110100”, use F4h
("11110100" in binary) and 7Fh (2
It is sufficient to perform a logical AND operation with “01111111” in the base number.

The primary sum check code PS, 7
When 4h is represented by a binary number, it is “01110100”,
The number of the active bits is four, which is 4h in hexadecimal.

On the other hand, when the return data D1 = 07h is represented by a binary number, it is "00000111", the number of active bits is three, and the number of active bits is one.
It is 3h in hexadecimal.

The address AD, command CM
1, CM2, the primary sum check code PS, the number of active bits in the return data D1 8h, 1h, 2h,
When 4h and 3h are added, 8h + 1h + 2h + 4h + 3
h = 12h. This address AD, command C
The addition value 12h of each active bit number in the M1, CM2, the primary sum check code PS, and the return data D1 is expressed as a binary number, which is "00010010", and when inverted, it becomes "11101101", which is expressed as a hexadecimal number. In this case, EDh is obtained. The most significant bit of “11101101” expressed by a binary number is deleted, and “EDh” is deleted.
1101101 ", which is represented by hexadecimal 6Dh
Is the secondary sum check code SS.

That is, in the above embodiment, the fire receiver RE is provided with first active bit number counting means for counting the number of active bits in the address code and the command code to be transmitted to the terminal device for each code.
First active bit number adding means for adding the number of active bits counted by the first active bit number counting means to obtain an added value of the number of active bits; and active means obtained by the first active bit number adding means. First inversion means for inverting an addition value of the number of bits to obtain an inversion value, and primary addition code creation for creating a primary addition code in which the most significant bit of the inversion value inverted by the first inversion means is deleted Means for transmitting an address code, an instruction code, and a primary addition code.

In the above embodiment, the terminal device is
Second active bit number counting means for counting the number of active bits in the address code and the command code received from the fire receiver for each code, and the number of active bits counted by the second active bit number counting means. Second active bit number adding means for obtaining an added value of the added active bit numbers, second inverting means for obtaining an inverted value obtained by inverting the added value obtained by the second active bit number adding means, A first addition code creating means for creating a first addition code in which the most significant bit of the inverted value inverted by the second inversion means is deleted; a first addition code; and a primary addition code received from the fire receiver. First determining means for determining that they match, and receiving a fire when the first addition code and the primary addition code match. Active bit number counting means for counting, for each code, the number of active bits of the return data to be returned, the address code received from the fire receiver, and the command code, and the third active bit number counting means. Third active bit number adding means for obtaining an added value obtained by adding the number of active bits counted by the above, and third inverting means for obtaining an inverted value by inverting the added value obtained by the third active bit number adding means. A second addition code creating means for creating a secondary addition code by removing the most significant bit of the inverted value by the third inverting means; and a second sending the return data and the secondary addition code to the fire receiver. Sending means.

Further, the fire receiver R in the above embodiment is used.
E is a fourth active bit number counting means for counting, for each code, the number of active bits of the return data received from the terminal device, the address code to be transmitted to the terminal device, and the command code; A fourth active bit number adding means for obtaining an added value obtained by adding the respective active bit numbers counted by the active bit number counting means, and an adding value obtained by the fourth active bit number adding means. To get inverted value
And a second addition code creating means for removing the most significant bit of the inverted value obtained by the fourth inversion means to create a second addition code, a second addition code, and A second determining unit that determines whether the secondary addition code matches.

In the above embodiment, the third active bit number counting means is also means for counting the number of active bits of the primary addition code.
May be means for counting the number of active bits of the primary addition code.

According to the above embodiment, in the disaster prevention equipment,
If fire information occurs when the same address is assigned to a plurality of terminal devices, the fire information can be reliably transmitted to the fire receiver, and a transmission abnormality can be reliably detected. .

The primary sum check code PS is an example of the primary addition code, the secondary sum check code SS is an example of the secondary addition code, and the primary operation code SC1 is the first addition code. This is an example of a code, and the secondary operation code SC2 is an example of the second addition code.

In each of the above embodiments, the photoelectric fire detector Sa has been described as an example of the terminal device.
It can also be applied to flame type, gas type and odor type fire detectors, and also to repeaters connected with on / off type fire detectors.

In the above embodiment, a signal inverting circuit may be provided in each of the signal transmitting / receiving sections TRX1 and TRX2.

Further, in the above-described embodiment, another receiving unit such as a repeater may be used instead of the fire receiver.

[0294]

According to the first and second aspects of the present invention, when fire information occurs in a disaster prevention facility when the same address is assigned to a plurality of terminal devices, the fire information is transmitted to the fire receiver. And so on, and it is possible to reliably detect transmission abnormalities.

According to the third to fifth aspects of the present invention, in a disaster prevention facility, if fire information occurs when the same address is assigned to a plurality of terminal devices, the fire information is transmitted to a fire receiver or the like. It is possible to reliably transmit the signal to the receiving unit and to reliably detect a transmission abnormality.

[Brief description of the drawings]

FIG. 1 is a system diagram showing a disaster prevention facility 100 according to one embodiment of the present invention.

FIG. 2 is a diagram showing an address of a terminal device in the embodiment as an 8-bit code, and FIGS. 2 (1) and 2 (2).
FIG. 3 is a diagram showing the addresses of the tenth and 255th terminal devices of a decimal number using 8-bit binary codes.

FIG. 3 is a time chart showing the operation of the embodiment.

FIG. 4 shows three transmitters P _A and P in the above embodiment.
_B, and a time chart showing the operation when the P _C tries sending the response signal at the same time (if this time sending the own address to notify the alarm).

FIG. 5 is a block diagram showing an example of a fire receiver RE used in the embodiment.

FIG. 6 is a block diagram showing an analog photoelectric fire detector S as an example of a terminal device in the embodiment.

FIG. 7 is a block diagram showing a repeater RP as an example of a terminal device in the embodiment.

FIG. 8 is a block diagram showing a transmitter P in the embodiment.

FIG. 9 is a system flowchart showing an operation of the fire receiver RE in the embodiment.

FIG. 10: Point polling in FIG. 9 (S4)
3 is a flowchart specifically showing the operation of FIG.

FIG. 11: Point polling in FIG. 9 (S4)
3 is a flowchart specifically showing the operation of FIG.

FIG. 12: Point polling in FIG. 9 (S4)
3 is a flowchart specifically showing the operation of FIG.

FIG. 13 is a flowchart showing a specific example in a case where an operator inputs a command to perform system polling from the operation unit OP to the fire receiver RE in the embodiment (S5).

FIG. 14 is a diagram showing an example in which the operator issues a command to perform selecting from the operation unit OP in the above embodiment.
It is a flowchart which shows the specific example at the time of inputting to E (S6).

FIG. 15 is a block diagram showing an example in which the operator issues a command for selecting from the operation unit OP in the above embodiment.
It is a flowchart which shows the specific example at the time of inputting to E (S6).

FIG. 16 is a diagram showing a main flowchart of a repeater RP as an example of a terminal device in the embodiment.

FIG. 17 is a flowchart showing an operation of a point process in the repeater RP in the embodiment.

FIG. 18 is a flowchart showing an operation of a point process in the transmitter P as an example of the terminal device in the embodiment.

FIG. 19 is a flowchart showing an operation of a point process in the transmitter P as an example of the terminal device in the embodiment.

FIG. 20 is a flowchart illustrating an operation (U13) of a system process of the repeater RP as an example of the terminal device in the embodiment.

FIG. 21 is a flowchart showing a specific operation (U14) of the selecting process in the relay device RP as an example of the terminal device in the above embodiment.

FIG. 22 is a flowchart showing a specific operation (U14) of a selecting process in the repeater RP as an example of the terminal device in the embodiment.

FIG. 23 is a diagram illustrating an example of setting a slot width in the embodiment.

FIG. 24 is a block diagram showing a photoelectric fire detector Sa as an example of a terminal device according to another embodiment of the present invention.

FIG. 25 is a fire receiver RE according to another embodiment of the present invention.
It is a block diagram which shows a.

FIG. 26 shows two fire detectors D1 in the above embodiment.
1 is a diagram showing signals from D22 and signals on a signal line L. FIG.

[Explanation of symbols]

 RE: fire receiver as a receiver, S: analog fire detector, RP: repeater, B: district sound device (district bell), G: gas leak detector, D: fire door as controlled equipment, F: On / off type fire detector, P: Transmitter, PC: Transmitter calling pulse, PS: Primary sum check code, SS: Secondary sum check code, SIC1: Signal inversion circuit, SIC2: Signal inversion circuit.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kenji Takeyoshi 4-73 Kudanminami, Chiyoda-ku, Tokyo Nomi Disaster Prevention Co., Ltd.

Claims (5)

[Claims] 1. A terminal device such as a fire detector, a repeater, a transmitter, or a controlled device is polled by a receiver such as a fire receiver or a repeater to read terminal information from the terminal device. In the disaster prevention equipment that determines, displays, or controls the terminal device, the receiving unit counts the number of active bits in an address code and an instruction code to be transmitted to the terminal device for each of the codes. Active bit number counting means;
First active bit number adding means for adding the number of active bits counted by the first active bit number counting means to obtain an added value of the number of active bits; and obtained by the first active bit number adding means. First inverting means for inverting the added value of the number of active bits to obtain an inverted value; primary for creating a primary addition code by removing the most significant bit of the inverted value inverted by the first inverting means First terminal means for transmitting the address code, the instruction code, and the first addition code; and the terminal device receives the address code received from the receiving unit and the first code. Second active bit number counting means for counting the number of active bits in the instruction code for each of the codes; A second active bit number adding means for obtaining an added value of the number of active bits obtained by adding the number of active bits counted by the active bit number counting means; and an adding value obtained by the second active bit number adding means. Second to get inverted value
A first addition code creating means for creating a first addition code by removing the most significant bit of the inverted value inverted by the second inversion means; a first addition code; First determining means for determining that the received primary addition code matches the first addition code;
When the addition code matches the primary addition code,
Third active bit number counting means for counting the number of active bits of the return data returned to the receiving unit, the address code received from the receiving unit, and the command code for each code; A third active bit number adding means for obtaining an added value obtained by adding the number of active bits counted by the active bit number counting means; and an inverted value obtained by inverting the added value obtained by the third active bit number adding means. Third inversion means for obtaining a second addition code for obtaining a second addition code by removing the most significant bit of the inverted value by the third inversion means; and the return data and the second addition code And a second transmitting unit for transmitting to the receiving unit, the receiving unit further comprising: the return data received from the terminal device; Fourth active bit number counting means for counting the number of active bits of the address code to be transmitted to the terminal device and the command code for each code; counting by the fourth active bit number counting means A fourth active bit number adding means for obtaining an added value obtained by adding the respective active bit numbers obtained above; and a fourth means for inverting the added value obtained by the fourth active bit number adding means to obtain an inverted value. 4 inversion means; 2nd addition code creating means for creating a second addition code by removing the most significant bit of the inverted value obtained by the 4th inversion means; 2nd addition code; and the terminal Second determining means for determining whether or not the secondary addition code received from the device matches the secondary addition code. 2. The method according to claim 1, wherein said third active bit number counting means is also means for counting the number of active bits of said primary addition code, and said fourth active bit number counting means is And a means for counting the number of active bits of the primary addition code. 3. A plurality of terminal devices including a fire detector, a repeater, a transmitter or a controlled device, and a receiving unit such as a fire receiver or a repeater are connected via a signal line. The receiving unit polls, reads predetermined terminal information from the terminal device, determines and displays the terminal information,
Alternatively, in the disaster prevention facility for controlling the terminal device, a first signal inversion means provided at a connection portion between the reception unit and the signal line; and a first signal inversion means provided at a connection portion between the terminal device and the signal line. And a second signal inverting means. 4. The primary addition code creating means according to claim 3, wherein said receiving unit adds an address code to be transmitted to said terminal device and an instruction code to create a primary addition code, and said address code And first sending means for sending the instruction code and the primary addition code. The terminal device adds the address code and the instruction code received from the receiving unit and performs a first addition. First addition code creating means for creating a code, first determination means for determining that the first addition code matches the primary addition code received from the receiving section,
When the addition code matches the primary addition code,
Secondary addition code creating means for creating a secondary addition code by adding return data to be returned to the receiving unit, an address code, an instruction code, and a primary addition code received from the receiving unit; Second sending means for sending a secondary addition code to a receiving unit, the receiving unit further comprising: the return data received from the terminal device, an address code to be transmitted to the terminal device, and the instruction code. Second addition code creating means for creating a second addition code by adding the second addition code to the first addition code, and determining whether the second addition code matches the secondary addition code received from the terminal device. Disaster prevention equipment, comprising: a second determination unit that determines whether or not the disaster prevention equipment is operating. 5. The primary addition code creating means according to claim 3, wherein said receiving section adds an address code to be transmitted to said terminal device and an instruction code to create a primary addition code, and said address code And first sending means for sending the instruction code and the primary addition code. The terminal device adds the address code and the instruction code received from the receiving unit and performs a first addition. First addition code creating means for creating a code, first determination means for determining that the first addition code matches the primary addition code received from the receiving section,
When the addition code matches the primary addition code,
Secondary addition code creating means for creating a secondary addition code by adding return data to be returned to the receiving unit, an address code received from the receiving unit, and an instruction code; and providing the return data and the secondary addition code. To send to the receiver
Sending means, and the receiving unit adds the return data received from the terminal device, an address code to be transmitted to the terminal device, and the command code to generate a second addition code. Disaster prevention equipment comprising: a two-addition code creating unit; and a second determination unit that determines whether the second addition code matches the secondary addition code received from the terminal device.