JPH07272176A - Thrminal equipment for fire alarm equipment - Google Patents

Abstract

PURPOSE:To make the time in which fire monitor can not be executed at the time of resetting the address of a terminal equipment, zero by permitting the terminal equipment to read its own address stored in an address setting part at the time of receiving an address reading instruction. CONSTITUTION:When a fire signal receiver sends the address reading instruction through a transmission and reception part and a signal wire, a sensor SE receives the address reading instruction by a transmission and reception part 80, reads its own address from a dip switch 62 and stores it in RAM 51. Namely, its own address is read and stored in RAM 51 at the time of turning on the power source of the smoke sensor SE. But at the time of operating the switch 62 after then, if the necessity of changing the setting of its own address is generated, the address after change is read and stored in RAM 51. At the time of referring to the address after then, the new address stored in RAM 51 is referred to. In this case, since the address is read without making the whole system down, the operation of reading the address again becomes speedy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving unit such as a fire alarm receiver and a terminal device connected by a common signal line. The terminal device sets its own address in its address setting unit, and the signal line is connected via the signal line. The present invention relates to a terminal device of a fire alarm facility and an input device of the fire alarm facility in which a receiving unit and a terminal device transmit and receive a coded signal.

[0002]

2. Description of the Related Art In a conventional so-called R-type fire alarm system, fire monitoring and status maintenance are performed by transmitting and receiving a coded signal between a receiving unit such as a fire receiver and a terminal device. There is. A terminal area such as a fire detector used in this facility is provided with a microcomputer control storage area, and its type and address are stored in this storage area.
The receiving unit identifies the terminal device by the calling signal based on the address, and collects the state change and sends the control command.

For example, a district sound repeater for controlling activation of a district bell or the like activates the ringing of a corresponding district bell when receiving a ringing command by addressing. The terminal device such as the repeater stores its own address in an address setting unit such as a DIP switch, and the control unit such as a microcomputer supplies power to the address setting unit only when the system is started up when the system is started. It reads (references) its own address and does not supply power at all times to reduce current consumption.

[0004]

SUMMARY OF THE INVENTION In the above conventional example,
Different addresses should be set for each terminal device, but in the inspection after the system is started up, the same address may be set for different terminal devices, and this duplicated setting should be corrected. , The whole system is once brought down, the address of the terminal device for which the address is set to duplicate is reset to the regular address, and then
You need to start it again.

In this case, the fire receiver is also restarted, the initial processing of the fire receiver is performed again, the initial processing of this fire receiver takes a relatively long time, and the fire cannot be monitored during this time. That is, in the above conventional example, when the address of the terminal device is reset after the system is started up,
There is a problem that the fire cannot be monitored only for the time required for the initial processing of the fire receiver (for example, several tens of seconds).

[0006] It is an object of the present invention to provide a terminal device of a fire alarm system capable of reducing the time during which fire cannot be monitored to zero when the address of the terminal device is reset after the system is started up. It is what

[0007]

According to the present invention, a receiving unit such as a fire receiver and a terminal device are connected by a common signal line, and the terminal device sets its own address in its address setting unit.
In the fire alarm facility where the receiving unit and the terminal device transmit and receive the coded signal via the signal line, while the initial processing of the terminal device is completed and the terminal device is powered on,
The receiving unit sends to the terminal device an address read command for reading the self-address of the terminal device, and when the terminal device receives the address read command, the terminal device reads the self-address stored in the address setting unit.

[0008]

According to the present invention, while the initial processing of the terminal equipment is completed and the terminal equipment is powered on, the receiving section sends to the terminal equipment an address read command for reading the self-address of the terminal equipment. , When the terminal device receives the address read command, it reads its own address stored in the address setting unit, so after starting the system,
When resetting the address of the terminal device, it is not necessary to bring down the entire system on the way, and therefore the time during which fire monitoring cannot be performed can be reduced to zero.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing a fire receiver RE which is an embodiment of the present invention.

The fire receiver RE includes an MPU (microprocessor) 10, ROMs 11 to 13, RAMs 21 and R.
It has AM23-29, the operation part 31, the display part 32, the transmission / reception part 33, and these IF31a-33a.

The ROM 11 is a storage area for programs and the like for controlling the entire fire receiver RE. ROM12 is
This is a storage area for a terminal device map table that stores each address of the terminal device such as the fire detector SE, the relay device, the transmitter, and the ID such as the type of the terminal device in the initial setting state. The ROM 13 is a storage area of an interlocking control table that interlocks and controls a controlled device such as a smoke control device based on a fire signal from a terminal device.

Here, the polling selecting method used in the above embodiment will be briefly described. In the polling selecting method, the terminal equipment connected to the fire receiver RE is divided into a plurality of groups in advance, and when called from the fire receiver RE, only the terminal equipment whose state has changed responds basically. Is. The response timing differs between system polling and point polling. In system polling, the response timing of terminal devices differs for each group, and for point polling, the response timing differs for each terminal device. If there is no response by system polling, the state of all terminal devices has not changed at all, and if there is a response by system polling, the state of one of the terminal devices belonging to the group that made the response has changed. , Point polling the terminal devices belonging to the group one by one.

Returning to FIG. 1, the RAM 21 is a work area, and the RAM 23 stores the group number g of the group to which the terminal device that has sent the response signal belongs, based on the timing of receiving a pulse during system polling. This is the area to be used. RAM24, at the time of point polling,
This is an area for storing the number m in the group of terminal devices that have transmitted a response signal based on the timing of receiving the response pulse. The RAM 25 is a storage area that stores control contents executed in system polling. RA
M26 is an area for storing a terminal device number to be controlled in selecting and its control content (for example, test command, fire confirmation command, level stop command). RAM2
Reference numeral 7 is a storage area for status information collected from each terminal device.

The RAM 28 is an area for storing the address and the type (ID) of the terminal device actually connected. That is, at the time of initial setting, the address and type of the terminal device stored in the ROM 12 are loaded. If the address is set but the terminal device is not connected, only that address is stored in the RAM 28. The ID corresponding to the address is not stored in the RAM 28. After the initial setting, the content stored in the RAM 28 is changed according to the information collected by the disconnection monitoring selecting. The RAM 29 is an area for storing the address of the terminal device determined to be in the disconnection state by the disconnection monitoring selecting.

Further, the MPU 10 sends an address read command for reading the self-address of the terminal equipment to the terminal equipment while the initial processing of the terminal equipment is completed and the terminal equipment is powered on. is there. Also, M
The PU 10 sends a recovery command to the terminal device while the terminal device has completed the initial processing and the terminal device is powered on.

FIG. 2 is a block diagram showing the photoelectric smoke detector SE in the above embodiment.

The photoelectric smoke detector SE includes an MPU (microprocessor) 40, RAMs 51 to 55, and ROMs 61 to 6.
3, IF71-74, signal transmission / reception unit 80, clock generation source CL, smoke detection light emitting diode LD, photodiode PD, test lamp TL, light emitting diode LED as an operation confirmation lamp.

The ROM 61 is a storage area for programs such as the flowcharts shown in FIGS. 3 and 4, and the dip switch 62 is for storing the self-address of the smoke detector SE itself, the type ID of the smoke detector SE, and the like. . ROM
Reference numeral 63 is a storage area for various discrimination criteria such as fire and failure.

The RAM 51 is a work area and is a RAM.
Reference numeral 52 denotes an area for storing current state information, which is a RAM
Reference numeral 53 is an area for storing the status information sent to the receiver RE, and RAM 54 is an area for storing various flags.
The RAM 55 is a storage area for the group number g of its own sensor, the number m in the group, and the address n on transmission.
The signal transmission / reception unit 80 transmits / receives a coded signal.

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

FIG. 3 is a flow chart showing the operation of the photoelectric smoke detector SE in the above embodiment.

First, the smoke sensor SE has ROMs 61 to 6
3. By checking the RAMs 51 to 55, the initial processing is performed (S1), the own address is read from the DIP switch 62, the read address is stored in the RAM 51 (S2), and then the address is referred to. Refers to the address stored in the RAM 51. Then, fire monitoring is performed and normal monitoring such as returning status information to the fire reception RE is performed (S
3).

Here, when the fire receiver RE sends an address read command through the transmitter / receiver 33 and the signal line SL (S4), the detector SE receives the address read command, and the transmitter / receiver 80 receives the address read command. The own address is read from the switch 62 and stored in the RAM 51 (S
2).

That is, the self-address is read when the power of the smoke sensor SE is turned on and stored in the RAM 51. After that, by operating the dip switch 62,
When it becomes necessary to change the setting of the self-address, the changed address is read and stored in the RAM 51. When the address is referred to after that, the RAM 51 is changed.
The new address stored in is referenced. In this case, since the address is read without bringing down the entire system, the operation of reading the address again is very quick.

Therefore, for example, when a new fire alarm system is installed, many terminal devices are installed.
If the same address is mistakenly set for different terminal devices among the connected terminal devices after starting up the entire system, the address can be adjusted by adjusting the DIP switch 62 to correct the address of the terminal device. Can be newly set, and thereafter, the address can be read from the DIP switch 62 to which the address is newly set without the system going down. In this way, since the new address can be read from the DIP switch 62 without shutting down the system, when resetting the address of the terminal device after starting the system, the time during which fire monitoring cannot be performed is zero. Can be

FIG. 4 is a flow chart showing another operation of the photoelectric smoke detector SE in the above embodiment.

First, the smoke sensor SE has ROMs 61 to 6
3. By checking the RAMs 51 to 55, the initial processing is performed (S11), the own address is read from the DIP switch 62, the read address is stored in the RAM 51 (S12), and then the address is referred to. Refers to the address stored in the RAM 51. Then, fire monitoring is performed, and normal monitoring such as returning status information to the fire reception RE is performed (S13).

Here, when the fire receiver RE sends a restoration command through the transmission / reception unit 33 and the signal line SL (S1).
4) In the sensor SE, the transmitter / receiver 80 receives the recovery command, reads its own address from the dip switch 62, and stores it in the RAM 51 (S12).

That is, in FIG. 3, the fire receiver R
The terminal device reads the newly set address when E sends an address read command.
In step 1, the fire receiver RE sends a recovery command, so that the terminal device reads the newly set address.

FIG. 5 is a diagram showing an example of the DIP switch 62 in which the address is stored in the above embodiment.

The dip switch 62 is composed of eight switches SW1 to SW8, and these switches are turned on,
By turning it off, the contents of the 8-bit address are set. One end of each of the switches SW1 to SW8 is MP
It is connected to the input ports P _{I1 to} P _I8 of U40 and the switch S
All of the other ends of W1 to SW8 are output ports P of the MPU 40
Connected to _O. Further, the respective one ends of the switches SW1 to SW8 are respectively connected to the + side of the power source via the pull-up resistor.

The output port P _O is an output terminal of the built-in inverter of the MPU 40, and the L signal is output from the output port P _O only when the address needs to be set.

With this configuration, when the smoke detector SE receives the address read command or the recovery command from the fire receiver RE, the L signal is output from the output port P _O , and at this time, the switches SW1 to SW8 are turned on. The H signal is applied to the input ports corresponding to the switches that are turned on, the L signal is applied to the input ports corresponding to the other switches, and the new address set in the dip switch 62 is read into the MPU 40. . When this address reading is completed, the output port P _O becomes the H signal,
That is, the power for making the output port P _O into the L signal is not consumed, and wasteful power consumption is reduced.

That is, the power supply to the address setting unit is normally shut off, and when the address read command is received from the receiving unit, the power is supplied to the address setting unit and the self address is read.

Although the smoke sensor SE is described as a terminal device in the above embodiment, other terminal devices may be used. Further, instead of the fire alarm receiver RE, another receiver such as a repeater may be used.

[0036]

According to the present invention, when the address of the terminal device is reset after the system is started up, the time during which fire cannot be monitored can be reduced to zero.

[Brief description of drawings]

FIG. 1 is a block diagram showing a fire receiver RE which is an embodiment of the present invention.

FIG. 2 is a block diagram showing a photoelectric smoke detector SE in the above embodiment.

FIG. 3 is a flowchart showing an example of the operation of the photoelectric smoke detector SE in the above embodiment.

FIG. 4 is a flowchart showing another operation of the photoelectric smoke detector SE in the above embodiment.

FIG. 5 is a diagram showing an example of a DIP switch 62 in which an address is stored in the above embodiment.

[Explanation of symbols]

 RE ... Fire receiver, SE ... Photoelectric smoke detector, 62 ... DIP switch.

Claims (3)

[Claims] 1. A receiving unit such as a fire alarm receiver and a terminal device are connected by a common signal line, and the terminal device sets its own address in its address setting unit, and the receiving unit is connected via the signal line. In the fire alarm facility that transmits and receives a coded signal between the terminal device and the terminal device, while the initial processing of the terminal device is completed and the terminal device is powered on, the receiving unit A fire alarm facility characterized by transmitting an address read command for reading the self-address of the terminal device, and when the terminal device receives the address read command, the self-address stored in the address setting unit is read. Terminal equipment. 2. The self-address according to claim 1, wherein power supply to the address setting unit is normally shut off, and when an address read command is received from the receiving unit, power is supplied to the address setting unit. The terminal device of the fire alarm facility, which is characterized by reading. 3. A receiving part such as a fire alarm receiver and a terminal device are connected by a common signal line, and the terminal device sets its own address in its address setting part, and the receiving part is connected via the signal line. In the fire alarm equipment that transmits and receives a coded signal between the terminal device and the terminal device, after receiving the recovery instruction from the receiving unit while the initial processing of the terminal device is completed and the terminal device is powered on. The terminal device of the fire alarm facility, wherein the terminal device reads the self-address stored in the address setting unit.