JP2002074535A - Fire alarm equipment and fire alarm used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform fire alarm for each room by using a fire alarm by providing fire alarms in respective rooms of a house, etc., and connecting them to each other. SOLUTION: In a building having a plurality of rooms, the fire alarms are installed in the respective rooms, a signal line network for connecting the respective fire alarms is laid, and fire is alarmed in the entire building on the basis of the fire detection of either one of fire alarms. The plurality of fire alarms are provided with an output circuit for outputting a transfer signal to the signal line network at the time of detecting the fire and also an input circuit for receiving the transfer signal through the signal line network, then performs alarm operation at the time of receiving the transfer signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire alarm system in which fire alarms can make a mutual alarm.

2. Description of the Related Art A conventional fire alarm device is a self-contained fire alarm device that generates a fire alarm by sounding a buzzer by capturing heat and smoke generated in a living room in a house or the like.
The only warning was in the living room. Therefore, if you want to give a fire alarm to the entire house when a fire occurs in any of the rooms, install a fire detector in each room and receive a signal from the fire detector to sound the entire house. A fire alarm system was provided by providing a fire receiver to notify the fire.

In the conventional fire alarm, when a fire occurs in the installed room, an alarm is issued by sound in the room. Therefore, when there is no person in the room, the alarm sound is emitted outside. I needed to hear. Conversely, if a person is in the room, the fire is usually visible and the value of the sound was not so great. In addition, there are fire alarm systems for homes equipped with multiple fire detectors and fire receivers in order to make the entire house sound sound when a fire occurs in a home, etc. It was necessary to prepare an acoustic device according to the scale of the device. An object of the present invention is to provide a fire alarm using a fire alarm for each room by providing a fire alarm in each room such as a house and interconnecting them.

SUMMARY OF THE INVENTION The present invention provides a fire alarm system comprising: a plurality of fire alarms which perform an alarm operation when detecting a fire; and a signal line network to which the plurality of fire alarms are respectively connected. The plurality of fire alarms are provided with an output circuit that outputs a transfer signal to a signal line network when a fire is detected, and an input that receives the transfer signal via the signal line network. A circuit is provided, and an alarm operation is performed when the input circuit receives the transfer signal. Further, the plurality of fire alarms output a transfer signal having alarm information, and perform an alarm operation according to the alarm information of the received transfer signal. In addition, for a building with multiple rooms, a fire alarm is installed in each room and a signal line network connecting each fire alarm is installed, and the building is detected based on the fire detection of one of the fire alarms. A fire alarm is issued for the entire building. Further, another invention relates to a detection circuit for detecting a fire, an alarm circuit for performing an alarm operation when the fire is detected by the detection circuit, and a signal line network when the fire is detected by the detection circuit. A fire alarm device comprising: an output circuit for outputting a transfer signal to an alarm circuit; and an input circuit for receiving a transfer signal from a signal line network to cause the alarm circuit to perform an alarm operation. .
Further, it has a setting circuit for giving fire information to a transfer signal from the output circuit, and further, the alarm circuit performs an alarm operation according to the fire information of the transfer signal received by the input circuit. .

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. FIG. 1 is a system configuration diagram schematically showing a fire alarm system utilizing the present invention, and FIG. 2 is a block circuit diagram of a fire alarm device used in FIG. In FIG. 1, H is a house as an example of an installation target,
It has four floors R1 to R4. Each room R1
Fire alarms D1 to D4 are respectively installed using ceiling and wall surfaces, and each of the fire alarms D1 to D4 is connected to a commercial power supply (AC100V) and driven, and each of the fire alarms D1 to D4 is fired. 4 are connected to each other. This signal line network L is wired to each room through the ceiling and inside the wall, and each of the fire alarms D1 to D4 is formally connected in parallel between the two lines. FIG. 2 shows fire alarms D1 to D4 used in FIG. 1, which are configured to detect heat due to a fire using a thermistor or to detect smoke density by scattering using a light emitting / receiving element. A power supply voltage from a circuit 11, an inspection circuit 12 for detecting that an inspection input is received from the outside via an inspection switch 21, and a power supply circuit 16 for purifying and smoothing a commercial power supply are stably supplied to a predetermined level. A constant voltage circuit 13, a driving circuit 14 for driving and controlling an acoustic circuit 22 using a speaker, a buzzer, and the like, and a fire indicator light 23 using a light emitting diode and the like, and a microcomputer for monitoring and controlling the movement of these components. The control circuit 15 is provided. Further, an output circuit 31 that outputs a notification signal to the terminal unit 24 by contact operation when a fire is detected from the control circuit 15 and an input circuit 32 that detects the input of a notification signal from the terminal unit 24 when there is an input. Is provided. The terminal 24 is connected to the signal line network L shown in FIG.
A transfer signal is input via the input circuit 32. Next, the operation of the fire alarms D1 to D4 will be described based on the entire equipment of FIG. 1 and focusing on the fire alarm D1. At all times, in the fire alarm device D1, the control circuit 15 activates the detection circuit 11 at a predetermined timing, which will not be described in detail, and performs the fire determination. Although this fire discrimination is not described in detail, the detection output based on the heat or smoke of the fire by the detection circuit 11 is AD-converted and taken in as data, and compared with a preset reference for a fixed value or a difference value. It is determined whether or not. At this time, fire alarm D
If the room R1 in which 1 is installed is in a normal state, the fire monitoring operation is repeated. Room R1 being monitored
In the normal state, it is not apparent from the appearance whether or not the fire alarm device D1 is functioning normally.
Inspection switch 21 provided to be exposed from one body
By pressing, an inspection input can be made to the fire alarm device D1. When there is a check input, the operation of the switch 21 is detected by the check circuit 12, and the check circuit 12 provides a check input to the control circuit 15 and the control circuit 1
5 starts the inspection operation. Although this inspection operation is not shown in detail, the output from the detection circuit 11 is increased so that a fire detection state is output in a simulated manner. Seconds)
Fire detection status. The control circuit 15 outputs a drive to the drive circuit 14 in the fire detection state, and the drive circuit 1
On the basis of the operation of step 4, the speaker of the acoustic circuit 22 emits a voice message such as "The fire alarm has detected a fire. Please check the site". Further, by turning on the fire indicator light 23, the inspection operation of the fire alarm device D1 can be visually confirmed. The inspection operation is automatically restored after the elapse of the predetermined time, thereby automatically returning to a fire monitoring operation for monitoring a fire. Then, when a fire occurs in the room R1 in which the fire alarm device D1 is installed, the detection output of the detection circuit 11 increases in the fire monitoring operation of the fire alarm device D1, and the control circuit 15 detects the fire from the detection output. to decide.
The control circuit 15, which has determined that a fire has occurred, performs a drive output to the drive circuit 14 in the same manner as in the above-described inspection operation, and emits a voice message as an audio sound from the acoustic circuit 22 based on the operation of the drive circuit 14, and at the same time, a fire indicator light 23 is turned on. Here, the sound may be not a voice message but an alarm sound. In that case, a buzzer may be used for the acoustic circuit 22 instead of a speaker. The sound alarm by the fire alarm D1 is mainly for the room R1, and when the resident is not in the room R1, for example, when there is a resident in the room R4, it is hard to expect that the sound alarm will sound enough. Therefore, the fire alarm D used in this embodiment is
1 has a transfer function. That is, when the control circuit 15 determines that a fire has occurred in the above-described process, the control circuit 15 outputs a drive to the drive circuit 14 and simultaneously outputs a start-up output to the output circuit 31. The output circuit 31 receiving the start-up output is connected to the terminal 2
4 and outputs a transfer signal to the signal line network L. The output signal 31 is short-circuited between the terminals of the terminal portion 24 connected to the signal line network L when the output circuit 31 has a non-voltage contact and closes the contact. The signal line network L in this state
, The input circuits 32 of the other fire alarms D2 to D4 can flow current through the signal line L. That is, although not shown in detail, the input circuit 32 has a current detection function, and receives a transfer signal by detecting a current flowing to the signal line L via the terminal unit 24. The input circuit 32 inputs a signal to the control circuit 15 by this transfer input, and causes the control circuit 15 to perform an alarm operation. The output circuit 31
Applies a voltage to the signal line network L as a transfer signal by a voltage contact, and the input circuit 32 detects the voltage of the signal line network L by comparing the voltage with the reference voltage via the terminal unit 24. You may. Here, a pulse signal or signal transmission may be used as the transfer signal. In addition, when the transfer signal is not distinguished, using the signal transmission complicates the circuit. Then, the control circuit 15 that has received the signal inputs a drive output to the drive circuit 14 in the same manner as when a fire is determined based on the output of the detection circuit 11, and the drive circuit 14
A sound message is emitted from the acoustic circuit 22 as an acoustic sound based on the above operation, and at the same time, the fire indicator light 23 is turned on. Here, the sound alarms by the fire alarms D2 to D4 are for the rooms R2 to R4, respectively, and based on the detection of the fire by the fire alarm D1, the alarm operation can be simultaneously performed for the rooms R1 to R4. Even if the resident is not in the room R1 and is in any room, it can be expected that the fire alarm is always recognized by the voice alarm. It is sufficient that the voice alarm can be issued to the room where each of the fire alarms D1 to D4 is installed, and it is not necessary to have a loud sound that can be heard in the entire area of the house H as in a conventional fire receiver. Yes, in the event of a malfunction, an alarm may be issued at an appropriate volume in each room of the house without disturbing the neighborhood. In the conventional fire receiver, it is necessary to adjust the volume according to the size of the building. In this embodiment, each of the fire alarms D1 to D4 may have an appropriate volume, and it is not necessary to adjust the volume. Absent. When the fire condition in the room R1 is recovered, the detection output from the detection circuit 11 of the fire alarm device D1 also decreases, the control circuit 15 determines that the fire is not a fire, and the drive circuit 1
4 and each output to the output circuit 31 is stopped.
In response to the stoppage of 1, the transfer signal of the signal line network L is stopped, the detection of the transfer signal by the input circuit 32 of the other fire alarm devices D2 to D4 is stopped, and the fire alarm devices D2 to D4 to the drive circuit 14 are stopped. Output is also stopped. Thus, the warning of the entire house H is stopped. In this embodiment, the control circuit 15 can distinguish between the alarm operation by the detection circuit 11 and the alarm operation by the operation of the input circuit 32 that has received the transfer signal. Output can be performed. At that time, the driving circuit 14
In addition, a voice message was prepared for each case of fire detection of the self and the case of transfer input, and a voice message corresponding to the case, for example, "Another fire alarm was activated.
Please check the site. " Also, in the case of a warning sound by a buzzer, it is possible to distinguish between a continuous sound and an intermittent sound. Since the input circuit 32 shares the terminal portion 24 with the output circuit 31, the output signal of the own circuit is also detected by itself. is there. Similarly, the control circuit 15 performs drive output with priority given to its own fire detection. That is, when its own fire detection is performed when there is a transfer input, the control circuit 15 sounds based on its own fire detection. Furthermore, when there is an inspection input from the inspection circuit 12, the control circuit 15 does not need to cause the entire system to perform an alarm operation. The signal output to is closed. Thereby, the fire alarm D1
During the inspection, fire alarms D2 to D4 in different places perform an alarm operation to prevent unexpectedly surprised persons in rooms R2 to R4. In the above-described embodiment, the operation of each circuit of the fire alarms D1 to D4 is started and stopped by the microcomputer under the control of the control circuit 15, and the determination by the comparison circuit is performed. The operation of each circuit may be controlled using a combination of logic circuits and the like. Next, another embodiment will be described based on the one embodiment. In this other embodiment, the fire alarm of the above-described embodiment outputs and outputs a common transfer signal to and from a signal line network, but in another embodiment, fire information is put on the transfer signal and output. Thus, each fire alarm device that has received the transfer signal performs an alarm operation such as an audio warning according to the information of the transfer signal. In the other embodiments, the systematic arrangement is the same as that of the first embodiment, and the fire alarm used has the same configuration as that of the first embodiment. Therefore, the differences will be mainly described. First, in terms of the circuit configuration, the fire alarms D1 to D4 use the output signal 31 and the input circuit 32, which are the contact mechanisms in the above-described embodiment, in order to use the transfer signal carrying the fire information. Alternatively, a pulse generation circuit and a detection circuit whose width can be adjusted, or a transmission circuit and a reception circuit using a transmission signal are used. Although the function as an electric circuit is different, the position as the circuit configuration does not change, so that the output circuit 31 and the input circuit 32
Call. Next, it is necessary for the control circuit 15 to identify fire information to be carried in the notification signal. In another embodiment, a case will be described in which the ID numbers of the respective fire alarms are placed as fire information by individually recognizing the respective fire alarms. Therefore, although not described in detail, the fire alarm according to the other embodiment requires the provision of an ID number setting unit using a rotary switch or a dip switch. Then, the control circuit 15 reads the ID number of the setting unit (not shown) and controls the output circuit 31 to output a signal. Further, in the acoustic circuit 22, a plurality of voice messages must be set for each fire alarm device in order to distinguish the alarm content based on the fire information based on the transfer signal. Then, the acoustic circuit 22 determines the drive output from the control circuit 15, selects a necessary voice message, and causes the speaker to sound. Next, the operation of the fire alarms D1 to D4 in such another embodiment will be described based on the entire equipment of FIG. 1 and focusing on the fire alarm D1, similarly to the above-described embodiment. The description will be given while omitting the same parts as those in the above-described embodiment. At all times, the fire alarm device D1 performs a fire monitoring operation in the same manner as in the above-described embodiment. Then, for the function of the fire alarm device D1, an inspection operation can be performed by pressing the inspection switch 21 in the same manner as in the above-described embodiment.
The room R1 where the fire alarm D1 is installed
When a fire occurs in the same manner as in the above-described embodiment, in the fire monitoring operation of the fire alarm device D1, the control circuit 15 determines that a fire has occurred, outputs a drive to the drive circuit 14, and outputs a drive signal.
The voice circuit 22 repeatedly emits a voice message "The fire alarm detected a fire. Please check the site." Then, the control circuit 15 performs a drive output to the drive circuit 14 and simultaneously performs a start-up output to the output circuit 31. This start-up output is performed based on the ID number 1 set in the setting unit which will not be described in detail, and the output circuit 31 having received the start-up output outputs 1 to the signal line network L via the terminal unit 24. It outputs a transfer signal carrying information of the number. The transfer signal is, for example, a code signal based on a transmission output, and is transmitted in a predetermined format although not described in detail. Then, the other fire alarms D2 to D4 receive the broadcast signal via the signal line network L by the input circuit 32 formed in the receiving circuit. Then, the control circuit 15 determines the transfer signal received by the input circuit 32 and performs a necessary alarm operation. That is, the control circuit 15 determines that the signal is the ID number 1 transfer signal from the transfer signal, and drives and outputs the number 1 transfer signal to the drive circuit 14. And
The drive circuit 14 selects the voice message for the first notification signal, and describes its own operation, for example, "The fire alarm on the second floor bedroom has been activated. Please check the site." A voice message can be issued from the acoustic circuit 22 as a voice alert that is different and accompanied by information that is effective for specifying a site by an ID number. Here, the ID number and the voice message will be described. The fire alarm device D1 has the ID number 1 and the location is "2nd floor bedroom". The fire alarm device D2 has the ID number 2 and the location is "2nd floor children's room". The alarm D3 has the ID number 3 and the location is “1st floor living”, and the fire alarm D4 has the ID number 4 and the location is “1”.
If "floor reception area" is set, the specific name of the fire occurrence location can be sounded by the ID number on the notification signal. It should be noted that the voice message stored in the drive circuit 14 which shows only a specific place for each ID number but not shown in detail stores such a message using those places. Thus, the fire alarm D2
The sound alarms of to 4 are for the rooms R2 to R4, respectively, but based on the fire detection of the fire alarm D1,
The fires in the room R1 can be simultaneously alarmed in the rooms R1 to R4, and the place where the fire occurred can be recognized by the voice alarm without the resident being in the room R1. Also in this other embodiment, it is preferable that the control circuit 15 outputs the drive to the drive circuit 14 with priority given to the detection of its own fire. In this other embodiment, the fire information to be included in the transfer signal is the ID number of each alarm device,
Although it was an audio alarm using this, the present invention is not limited to this. For example, even if the sound is sounded by a buzzer, the number may be represented by the number of times of interruption and the location of occurrence may be understood from the number. It is easier to pronounce a specific place. Also, as a method of using the ID number, a number that does not need to perform a transfer alarm, that is, a so-called mask may be set, and can be used during construction or the like. Further, the basis of the ID may be classified as the type of the fire alarm device, such as whether the detected device is heat, smoke, or a gas leak or CO detection. Furthermore, although the transmission signal is used for the method of placing the fire information with respect to the transfer signal in another embodiment, for example, when an ID number is used, the transfer signal as in the above-described embodiment has a pulse The wave number and the pulse width may be carried, and the number of ID numbers is not as large as that of the transmission signal. However, when the number of rooms is not so large as in a house, it can be used as a simple means. As a method for reliably distinguishing signals, a predetermined number of output circuits 31 and input circuits 32 may be prepared, and signal lines corresponding to the number of transfer signals may be prepared in the signal line network L. In each of the above embodiments, a thermal type or a smoke type has been described as a method of detecting a fire of the fire alarms D1 to D4, but a flame type, a gas leak alarm, or a security device may be used. In addition, although the level comparison has been described for the fire discrimination, the discrimination may be performed in a complex manner based on a process such as a difference or integration.
Neuro processing or fuzzy inference may be used. In addition, the non-holding type which returns to the normal state due to the level drop after the fire has occurred has been described, but the self-holding type which maintains the state when the fire has occurred may be used (in such a case, a recovery switch or the like). Means is required), but a commercial power supply is used as the power supply, but a battery-powered power supply may be used (in that case,
It is preferable to perform a voltage drop warning). Further, the alarm operation has been mainly described with respect to the acoustic alarm. However, as described above, the alarm operation can be distinguished by the display operation such as the blinking of the indicator lamp, and the color coding of the light emitting diode can be used. Furthermore, if a character display or the like is used, a place can be specified and displayed. What is necessary is just to make it possible to distinguish effectively by these selections and combinations. As described above, the present invention is a fire alarm system including a plurality of fire alarms that perform an alarm operation when detecting a fire, and a signal line network to which the plurality of fire alarms are connected, The plurality of fire alarms are provided with an output circuit that outputs a transfer signal to a signal line network when detecting a fire, and an input circuit that receives the transfer signal via the signal line network is provided. Since the alarm operation is performed when the input circuit receives the transfer signal, the operation of one fire alarm device can cause each fire alarm device to perform an alarm, and the range is based on the installation of the fire alarm device. , And can be easily installed regardless of the size of the installation target such as a house. Therefore, a large volume is not required in a lump, and no trouble is given to the surroundings even in the case of a false alarm. Further, the plurality of fire alarms output a transfer signal having the alarm information and perform an alarm operation according to the alarm information of the received transfer signal, so that the alarm information can be warned to the entire installation target. . In addition, for a building with multiple rooms, a fire alarm is installed in each room and a signal line network connecting each fire alarm is installed, and the building is detected based on the fire detection of one of the fire alarms. A fire alarm can be given to the whole area, and a fire alarm can be made effectively. Further, another invention provides a detection circuit for detecting a fire,
An alarm circuit for performing an alarm operation when a fire is detected by the detection circuit, and an output circuit for outputting a transfer signal to a signal line network when the fire is detected by the detection circuit,
An input circuit that receives a transfer signal from a signal line network to cause the alarm circuit to perform an alarm operation. The fire alarm device can be connected to a plurality of signal lines via the signal line network to perform a fire monitoring operation. In addition, it has a setting circuit for adding fire information to the transfer signal from the output circuit, and by this setting circuit, it is possible to specify information of individual fire alarms,
Further, the alarm circuit performs an alarm operation in accordance with the fire information of the transfer signal received by the input circuit, so that a fire alarm that effectively uses the information of the transfer signal can be performed.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram schematically showing fire alarm equipment.

FIG. 2 is a block circuit diagram of the fire alarm of FIG. 1;

[Explanation of symbols]

 D1-4 Fire alarm L Signal line network 15 Control circuit 22 Sound circuit 31 Output circuit 32 Input circuit

Claims (6)

[Claims] 1. A fire alarm system comprising: a plurality of fire alarms that perform an alarm operation when detecting a fire; and a signal line network to which each of the plurality of fire alarms is connected. The fire alarm is provided with an output circuit that outputs a transfer signal to the signal line network when detecting a fire, and an input circuit that receives the transfer signal via the signal line network is provided. A fire alarm system for performing an alarm operation when the input circuit receives the notification signal. 2. The fire alarm equipment according to claim 1, wherein the plurality of fire alarms output a transfer signal having the alarm information and perform an alarm operation according to the alarm information of the received transfer signal. 3. In a building having a plurality of rooms, a fire alarm is installed in each room, and a signal line network for connecting each fire alarm is provided. 2. A fire alarm is issued to the entire building based on the fire alarm.
Or 2 fire alarms. 4. A detection circuit for detecting a fire, an alarm circuit for performing an alarm operation when detecting a fire, and a notification signal to a signal line network when a fire is detected by the detection circuit. And an input circuit for receiving a transfer signal from the signal line network to cause the alarm circuit to perform an alarm operation. 5. The fire alarm according to claim 4, further comprising a setting circuit for adding fire information to the transfer signal from the output circuit. 6. The alarm circuit according to claim 4, wherein the alarm circuit performs an alarm operation according to the fire information of the notification signal received by the input circuit.
Fire alarm.