JP4915922B2 - Fire detector - Google Patents

Description

The present invention relates to a fire detector.

  In conventional fire alarm equipment terminal devices such as fire detectors, the address setter receives command data sent by the address setter during the setting read mode using special transmission, and similarly uses special transmission. This is a terminal device that receives command data transmitted by the address setter during the address change mode and returns a set address or the like to the address setter.

In order to check the setting addresses of many terminal devices efficiently and accurately, the address setting device continuously transmits setting address read commands to the terminal devices. Therefore, the fire alarm equipment terminal device maintains the special transmission mode even when it is removed from the address setter.
Japanese Patent Laid-Open No. 7-272171

  Therefore, if the fire detector is removed from the address setter and immediately connected to the fire receiver, the fire detector in the normal transmission mode will remain connected to the fire receiver until the CPU is reset. Cannot switch to. In particular, the photoelectric smoke detector having a large-capacitance capacitor in the light emitting circuit requires 10 seconds for the CPU to reset, for example, so that the photoelectric smoke detector can be connected to the fire receiver during that time. Cannot switch to fire detector in normal transmission mode.

  That is, in the above conventional example, when the fire detector is removed from the address setter and immediately connected to the fire receiver, the transmission mode transmitted from the fire receiver until the photoelectric smoke detector CPU is reset. There is a problem that cannot be recognized.

It is an object of the present invention to provide a fire detector that can recognize the transmission mode of a fire receiver even after the fire detector is removed from the address setting device and can efficiently perform the setting operation. And

The present invention receives a normal transmission command from a fire receiver and returns a terminal information signal, and a special transmission command is received from an address setter when the terminal address is confirmed or changed. In a fire sensor having a special transmission mode for replying, when the fire sensor is connected to the address setting unit and a set address read command in the special transmission mode is continuously received, a continuous address read recognition flag is set. A detection means for detecting that a command different from the special transmission command is received when the fire detector is connected to the fire receiver after receiving the special address command and the continuous address read recognition flag setting means; The detection means detects that a command different from the special transmission command has been received. When, when the continuous address read recognition flag is set, and ends the special transmission mode, a fire detector having a mode switching means for switching to the normal transmission mode.

According to the present invention, the fire detector in the special transmission mode state for confirming or changing the address of the fire detector receives the normal transmission command from the fire receiver, thereby returning the terminal information signal to the normal transmission mode. Therefore, even after the fire detector is removed from the address setting device, the transmission mode of the fire receiver can be recognized, and the setting operation can be performed efficiently.

  The best mode for carrying out the invention is the following embodiment.

  FIG. 1 is a block diagram showing a photoelectric fire detector 100 that is Embodiment 1 of the present invention.

  The photoelectric fire detector 100 includes a light emitting circuit L, a light receiving / amplifying circuit 10, a control circuit 20, a transmission / reception circuit 30, a constant voltage circuit 40, a nonpolarizing circuit 50, and an operation indicator lamp circuit 60. Have.

  The light emitting circuit L includes a light emitting element and a light emitting capacitor.

  The light receiving / amplifying circuit 10 includes a light receiving element and a light receiving output signal amplifying circuit.

  The control circuit 20 is configured by a CPU or the like, and realizes a transmission mode recognition unit. If the address read command in the special transmission command is continuously recognized from the address setting unit during the special transmission mode, the transmission mode recognition unit sets the continuous address read recognition flag in the RAM of the CPU. If the normal transmission command is recognized during the special transmission mode, the continuous address read recognition flag is cleared and the reception state is switched to the normal transmission mode. The transmission mode recognition unit receives normal transmission commands from fire receivers and special transmission commands sent from sensitivity setting machines, board inspection machines, address setting machines, etc., analyzes them, and performs the requested processing. Execute.

  The transmission / reception circuit 30 transmits / receives a normal transmission command of a fire receiver or a special transmission command of a sensitivity setting machine, a board inspection machine, an address setting machine, or the like. The “special transmission command” is a command for returning the terminal address to the address setter when the terminal address is confirmed or changed. The “normal transmission command” is a command for receiving a normal transmission command from the fire receiver and returning a terminal information signal to the fire receiver.

  FIG. 2 is a diagram showing the address setting unit 70.

  The address setter 70 confirms the set address of the fire detector SE1 in the setting read mode which is one of the special transmission modes, and the fire detector SE1 in the address change mode which is one of the special transmission modes. Change the setting address.

  The address setting unit 70 includes holding units 71 and 72 that hold the fire detector SE1 and an operation display unit 80. The operation display unit 80 includes digit keys 81, 82, 83, LEDs 84, 85, 86, 88, a power key 87, and an execution key 89. The digit keys 81, 82, 83 designate the digit of the address when the address is designated. The LED 84 also serves as a numeric key, and an address can be input by pressing this key.

  Next, the operation in the first embodiment will be described.

  3, 4, and 5 are flowcharts illustrating the operation of the first embodiment.

  First, reception of command data is started, and when reception of command data is normally completed (S1), the control circuit 20 analyzes the received command data (S2), and receives a special transmission mode switching command. (S3), the fire detector SE1 is switched to the special transmission mode (S4).

  If it is determined that the fire detector SE1 is in the special transmission mode (S5) and the command data is in the setting readout mode (S6), and the setting address readout command (S21) in the flowchart shown in FIG. If the sensor setting address is read from the flash memory (S22) and the address read once flag is already set (S23), it is determined that the address setting device is used, and the CPU RAM is continuously addressed. A read recognition flag is set (S24). Then, a reply preparation to the address setting device 70 is executed (S25), and an address reply is executed (S26).

  If the address read once flag is not set in S23, the address read once flag is set (S27), the reply to the address setting unit 70 is prepared (S25), and the address reply is executed (S26).

  If it is determined in step S21 that the command is not a setting address read command, the other sensor setting values are read (S28), and preparations for returning sensor setting values to other setting devices other than the address setting device are executed (S25). The set value is returned (S26).

  Thereafter, a reception standby process is executed (S11), and the process returns to S1.

  On the other hand, if the fire detector SE1 is in the special transmission mode (S5) and is determined not to be in the setting readout mode by the command data (S6), if this mode is the address change mode (S7), the address change process is performed. Execute (S8). Then, a reply to the address setting unit 70 is prepared (S9), an address or the like is returned (S10), the reception standby process is executed (S11), and the process returns to S1.

  If it is determined in S8 that the mode is not the address change mode, it is determined whether or not the mode is the sensitivity setting mode (S12). (S14), and the set value is returned (S15).

  If it is determined in S12 that the mode is not the sensitivity setting mode, error processing is executed (S16). If it is determined that the continuous address read recognition flag is set (S17), the fire detector SE1 is switched from the special transmission mode to the normal transmission mode (S18), and the continuous address recognition flag is cleared. Then, after executing the reception standby process (S11), the process returns to S1.

  That is, when the fire detector SE1 is connected to the fire receiver after the fire detector SE1 is set to the special transmission mode by connecting the fire detector SE1 to the address setting device 70, the above processing (S1 to S28) is performed. ) Automatically switches the fire detector SE1 to the normal transmission mode. Accordingly, since the fire detector in the special transmission mode state for confirming or changing the address of the fire detector SE1 receives the normal transmission command from the fire receiver and enters the normal transmission mode in which the terminal information signal is returned, the address setting is performed. Even immediately after removing the fire detector SE1 from the device 70, the transmission mode of the fire receiver can be recognized, and the setting operation can be performed efficiently.

  If it is determined in S5 that the fire detector is not in the special transmission mode, it responds to the normal transmission command of the fire receiver as shown in FIG. That is, if it is system polling (SP) (S41), the SP is executed (S42), and reception standby processing is performed (S50).

  If it is determined in S41 that it is not system polling and it is point polling (PP) (S43), PP reply preparation processing is executed (S44), PP reply is executed (S45), and reception standby processing is executed (S45). S50).

  Furthermore, if it is determined that it is not point polling in S43 and it is determined that it is selecting (SL) (S46), SL reply preparation processing is executed (S47), SL reply is executed (S48), and reception is waited for. Processing is performed (S50).

  Further, if it is determined in S46 that the selection is not performed, error processing is executed (S49), and reception standby processing is performed (S50).

  That is, in the above embodiment, immediately after the fire detector SE1 is removed from the address setting device 70, when the fire detector SE1 is connected to the fire receiver and a normal transmission command is received, the normal transmission command is Since the command does not exist in the transmission, the fire detector SE1 cannot execute the normal transmission command process. Therefore, the fire detector SE1 executes error processing, and then recognizes the continuous address read recognition flag, the fire detector SE1 is switched to the normal transmission mode, and the continuous address read recognition flag is cleared.

  By executing this operation, the normal transmission command from the fire receiver can be immediately recognized when connected to the fire receiver immediately after the fire detector SE1 is removed from the address setting device 70.

  Therefore, in the conventional example, it is necessary to wait for the CPU of the fire detector SE1 to reset before connecting to the fire receiver. However, in the above embodiment, the CPU of the fire detector SE1 does not wait for the reset. In addition, since the fire detector SE1 can be connected to the fire receiver and communicated with the fire receiver, the address change and confirmation work is improved during construction and inspection.

  That is, in the above embodiment, during the fire monitoring, the normal transmission mode in which the normal transmission command is received from the fire receiver and the terminal information signal is returned, and the special transmission from the address setting unit 70 is performed when the terminal address is confirmed or changed. It is an example of a fire detector having a special transmission mode for receiving a command and returning the terminal address.

  Further, the control means 20 connects the fire detector to the address setting unit 70 and sets a continuous address read recognition flag when a set address read command in the special transmission mode is continuously received. It is an example of a means.

  The control circuit 20 is an example of detection means for detecting that a command different from the special transmission command is received when the fire detector is connected to the fire receiver after receiving the special transmission command. is there.

Further, the control circuit 20 is an example of mode switching means for ending the special transmission mode and switching to the normal transmission mode when the detection means detects that a command different from the special transmission command is received.

It is a block diagram which shows the photoelectric fire detector 100 which is Example 1 of this invention. It is a figure which shows the address setting device. 3 is a flowchart showing the operation of the first embodiment. 3 is a flowchart showing the operation of the first embodiment. 3 is a flowchart showing the operation of the first embodiment.

Explanation of symbols

100: photoelectric fire detector,
L: Light emitting circuit,
10: Light receiving / amplifying circuit,
20 ... control circuit,
30: Transmission / reception circuit,
40 ... constant voltage circuit,
50: Non-polarization circuit,
60: Operation indicator lamp circuit.

Claims (1)

Normal transmission mode that receives a normal transmission command from a fire receiver and returns a terminal information signal, and special transmission that receives a special transmission command from the address setter and returns the terminal address when the terminal address is confirmed or changed In a fire detector comprising a mode,
Continuous address read recognition flag setting means for setting a continuous address read recognition flag when the fire detector is connected to the address setter and the set address read command in the special transmission mode is continuously received;
Detecting means for detecting that a command different from the special transmission command is received when the fire detector is connected to the fire receiver after receiving the special transmission command;
When the detection means detects that a command different from the special transmission command is received , if the continuous address read recognition flag is set, the special transmission mode is terminated and the mode is switched to the normal transmission mode. Switching means;
A fire detector characterized by comprising:

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