JPH06119569A - Fire detecting alarm with voice generator - Google Patents

Abstract

PURPOSE:To provide a compact and lightweight fire detecting alarm with a voice generator which can individually output a voice message and an alarm tone in accordance with the sort of a fire. CONSTITUTION:An ultraviolet rays sensor to be driven by sensing ultraviolet rays, a power supply battery E, a DC-DC converter circuit 2, an ultraviolet sensor driving circuit 3, a flame discriminating circuit 4 for discriminating ultraviolet rays from flames, a voice synthesizing circuit 5 for generating voice based upon an output signal from the circuit 4, and a low frequency power amplifying circuit 6 for outputting the generated voice to an alarm 9 are integrated in a case and a fire discriminating circuit 50 for discriminating whether a pulse signal from the ultraviolet sensor is caused by a fire or not by the continuous time of flames and a fire detecting alarm output circuit 51 for outputting an alarm tone based upon an output from the circuit 50 are also integrated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The flame detection alarm with a sound generator of the present invention comprises a match flame, a writer flame, a burner flame,
Detects ultraviolet rays contained in various flames such as fire flames, and determines whether the detected flame is temporary or continuous, and when it is a temporary flame, "no fire" or "no smoking" The warning sound such as `` is generated by voice, and an alarm sound (buzzer sound, bell sound, etc.) that indicates the occurrence of fire is generated in the case of continuous flame, for example, a warning device that calls attention to the use of fire, It is used as a fire alarm to notify the occurrence of a fire.

[0002]

2. Description of the Related Art There have been various types of fire alarm devices, and for example, there is one that detects an ultraviolet ray contained in a flame when a fire occurs and generates an alarm sound such as a buzzer.

[0003]

The conventional fire alarms described above have the following problems. Detecting a fire in the initial state of a fire may occur because the field of view to detect a flame is narrow, or the sensitivity is poor and the flame cannot be detected a few meters away from the flame, or it cannot be detected unless the flame becomes large. Is difficult. Since an AC power supply is used, it cannot be used in a place without a commercial power supply, and a power transformer is required, which is large and heavy, and the mounting place is restricted. It is not possible to determine whether the alarm is a fire alarm or another alarm based on only one buzzer sound. It may react to the ultraviolet rays of the sun, the ultraviolet rays of the lighter or the flame of the match when lighting a cigarette, and if it reacts, the same alarm sound as when a fire is detected will be emitted, so the alarm sound It is impossible to confirm whether or not the fire really occurred even if the above happened.

[0004]

The object of the present invention is that it can be used in places where there is no commercial power source, it is compact and lightweight, and it can be attached to a desired place. Moreover, it can be used as a flame of a fire or a flame of a match or a writer depending on the size and duration of the flame. Distinctly, in the former case, fire alarm sound,
In the latter case, it is to provide a flame detection and alarm device with a sound generator that can output a warning voice message.

[0005]

As shown in FIG. 1, a flame detection / informing device with a sound generator according to claim 1 of the present invention comprises an ultraviolet sensor 1 which operates by sensing at least ultraviolet rays contained in a flame. A power source battery E, a DC-DC converter circuit 2 for boosting the voltage of the power source battery E to an operating voltage of the ultraviolet sensor 1, a drive circuit 3 for outputting a pulse signal from the ultraviolet sensor 1, and an ultraviolet ray A flame discriminating circuit 4 for discriminating whether the pulse signal output from the sensor 1 is generated by detecting the ultraviolet ray of the flame or the ultraviolet ray other than that, and an output signal from the flame discriminating circuit 4. From the low frequency power amplification circuit 6 for amplifying the signal sound of the voice synthesis circuit 5, and the low frequency power amplification circuit 6 Output audio Annunciator 9 one case 10 (FIG. 2, FIG. 3) incorporated in the one in which the ultraviolet sensor 1 is attached to the casing 10 so as to be able to sense the ultraviolet radiation.

According to a second aspect of the present invention, there is provided a flame detection and annunciator with a sound generator, as shown in FIG. Incorporating a fire identification circuit 50 for identifying whether it is due to the detection of a fire flame by the duration of the flame and a fire detection and alarm output circuit 51 for outputting an alarm sound by the output from the fire identification circuit 50. Is.

[0007]

In the flame detection / informing device with a voice generator according to the first aspect of the present invention, the power source battery E and the ultraviolet sensor 1, which operates on the voltage thereof, the voice synthesizing circuit 5, the informing device 9 and various electric circuits are all one. Since it is incorporated in the case 10, the structure is simple. In addition, since the flame identification circuit 4 incorporated in the case 10 determines whether the ultraviolet ray sensor 1 operates by detecting the ultraviolet ray of the flame or by detecting the ultraviolet ray other than that (for example, sunlight), it does not malfunction. . Moreover, since the voice synthesis circuit 5 is provided, when the ultraviolet ray of the flame is detected,
Instead of an alarm sound by a buzzer or the like, a warning message by voice, for example, "This is no smoking", "Please refrain from smoking", "Keep smoking here" is displayed to call attention. In this case, since the fire detection circuit with the sound generator according to claim 2 incorporates the fire identification circuit 50, the flame of the lighter ignited by the ultraviolet sensor 1 to ignite, for example, a cigarette (only for a short time). Whether it detects a flame that does not occur) or a flame caused by a fire (flame that lasts for a long time) is detected. When a flame caused by a fire is detected, an alarm sound is emitted by an alarm 9 such as a buzzer or a bell. , Informs of a fire.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of various devices and various electric circuits incorporated in a case 10. E in the figure is a power supply battery, for example, a 9V dry battery. 1 in the same figure
Reference numeral 5 denotes a constant voltage circuit for maintaining a constant voltage (for example, DC5V) even if the voltage of the battery E drops to some extent due to use or changes a little due to external factors. The constant voltage circuit of is used.
2 is a DC-DC converter which converts the battery voltage E (for example, 9V) into the drive voltage (DC) of the ultraviolet sensor 1.
It is for boosting the voltage to about 300V to 400V). Since the magnitude of the current consumption of the DC-DC converter circuit 2 is almost the same as the life of the battery E, it is desirable to use the converter circuit 2 having the lowest current consumption. An example of the DC-DC converter circuit 2 shown in FIG. 1 is a pulse generation circuit 2 which oscillates a differential signal and shapes the signal into a square wave.
a, a booster circuit 2b that generates a trigger pulse based on the same square wave and boosts the trigger pulse to the drive voltage of the ultraviolet sensor 1, and a rectifier circuit 2c that converts the trigger pulse boosted by the booster circuit 2b into a direct current. It consists of

1 in FIG. 1 is an ultraviolet sensor (UV tube).
This is a pulse signal when driven by ultraviolet rays contained in flames or sunlight (waveform at point a shown in FIGS. 4 and 5).
Is output. This ultraviolet sensor 1
For example, UVtro manufactured by Hamamatsu Photonics Co., Ltd.
There is n-R2868 (registered trademark). Reference numeral 3 in FIG. 1 denotes a drive circuit for driving the ultraviolet sensor 1, which is composed of a resistor R and a capacitor C, and forms a pulse signal output from the ultraviolet sensor 1 (waveforms in FIG. 4 and 5a) into a square shape. This is for outputting as a wave signal (point waveforms in FIGS. 4 and 5b).

Reference numeral 4 in FIG. 1 denotes a flame discriminating circuit, which is a pulse (point waveform in FIG. 4a) output from the ultraviolet sensor 1 sensed by the ultraviolet rays contained in the flame, or other than the flame. (For example, sunlight) It detects the ultraviolet rays included in the output and determines whether it is output, and outputs the flame detection signal (point waveform in Figure 4e) only when the ultraviolet rays included in the flame are detected and output. is there. Therefore, this flame discrimination circuit 4 is shown in FIG.
A gate timer circuit 4a that sets a time T1 for inputting a square wave having a point waveform, and a pulse signal (point waveform in FIG. 4b) that is input within the set time T1 of the gate timer circuit 4a are counted and within the same time. A counter circuit 4b which outputs a pulse signal (waveform in FIG. 4d) when a predetermined number (five in this embodiment) is counted, and a flame detection pulse (point in FIG. 4e) which operates by the pulse signal and has a predetermined pulse width T2. The output timer circuit 4c outputs a waveform).

The operation of the flame discriminating circuit 4 will be described with reference to the block diagram of FIG. 1 and the waveform diagram of FIG. UV sensor 1
4 outputs from the point a waveform of FIG. 4, and when the pulse of the point waveform of FIG. 4b is input to the gate timer 4a of the flame discrimination circuit 4, the point waveform of FIG. 4c falls at the trailing edge of the pulse and after T1 seconds. stand up. When the pulse interval of the point b waveform is within T1 seconds, the falling state of the point waveform of FIG. 4c continues, and when the pulse interval of the point waveform of FIG. 4b exceeds T1 seconds, the point waveform of FIG. 4c rises. Then, the point pulse of FIG. 4c falls at the first pulse (the fourth pulse of the point waveform of FIG. 4b) whose pulse interval is within T1 seconds in the point waveform of FIG. 4b, and the counter 4b starts counting from the next fifth pulse. Be started. When the count number is 5 (9th pulse), a pulse having a point waveform shown in FIG. 4d is output. The count number of the counter 4b is reset at the rising edge of the pulse having the waveform shown in FIG. 4d, the counting is restarted from the 10th pulse, and then the pulse having the waveform shown in FIG. 4d is generated at the fifth pulse, that is, the 14th pulse. Is output. The rising edge of the pulse of the waveform shown in FIG. 4d, which is the output of the counter 4b, causes the rising edge of the waveform of FIG. 4e, which is the output of the output timer 4c, to fall after the pulse width T2 seconds set by the output timer 4c. In the point waveform of FIG. 4e, even if the pulse interval of the point waveform is continuous within T2 seconds, it falls in T2 seconds, rises again with the next pulse after T2 seconds, and falls after T2 seconds.

Incidentally, the pulse signal output when the ultraviolet sensor 1 detects the ultraviolet rays of the flame (point waveform in FIG. 4a).
Has a short pulse interval, and the pulse interval of the pulse signal that is output when something other than flames, such as the ultraviolet rays of sunlight, is detected, is wider than the pulse interval of the pulse signal that is output when the ultraviolet rays of the flame are detected. . Therefore, when a predetermined number of pulses are input within the set time T1 of the gate timer 4a, it is determined that the ultraviolet ray of the flame is detected, and the flame detection circuit 4 outputs the flame detection signal (point waveform in FIG. 4e). When the number of pulses output is less than the predetermined number within the set time T1, it is determined that ultraviolet rays other than flame have been detected, and the flame detection signal is not output.

The signal of the point waveform shown in FIG. 4e output from the output timer 4c of the flame discrimination circuit 4 is input to the power saving switch circuit 19 and the trigger circuit 7. The power-saving switch circuit 19 is turned on when a flame detection signal (point waveform in FIG. 4e) is input from the flame identification circuit 4, and is turned off when there is no signal, and various flame detection signals are not input during normal times. This prevents unnecessary current from flowing through the electric circuit and suppresses the consumption of the power supply battery E. Further, when it is turned on as described above, the low frequency power amplifier circuit 6 is turned on (the low frequency power amplifier circuit 6 is not normally activated). The trigger circuit 7 outputs a trigger pulse having a point waveform shown in FIG. 5f for starting the operation of the voice synthesizing circuit 5. The voice synthesis circuit 5 operates when a trigger pulse (point waveform in FIG. 5f) is input from the trigger circuit 7 to generate a voice signal (point waveform in FIG. 5g) from the data recorded in the voice synthesis circuit 5. It is input to the low frequency power amplifier circuit 6. The low-frequency power amplifier circuit 6 amplifies the audio signal (point waveform in Fig. 5g) and informs the alarm 9 "No smoking here", "Please refrain from smoking",
An alarm message such as "Fire is strictly prohibited here" is output.

Reference numeral 50 shown in FIG. 1 is a fire discrimination circuit, which is a pulse (pulse waveform in FIG. 5a) output from the ultraviolet sensor 1 for a short period of time when a flame and a fire are ignited when a cigarette is lit. It is a circuit that distinguishes a flame that continues for a long time as shown by the duration of the flame. This fire identification circuit 50 includes a gate timer 50a, a reset timer 50b,
It is composed of a counter 50c, a count detection timer 50d, and an output timer 50e. The operation of the circuit 50 will be described with reference to the waveform chart of FIG. When the waveform shown in FIG. 5b is input to the gate timer 50a of the fire discrimination circuit 50, the output signal of the timer 50a (waveform shown in FIG. 5j) falls at the time of input and rises after the set time T3 seconds of the gate timer 50a. If the point waveform in FIG. 5b continues within the set time T3 seconds of the gate timer 50a, the j point waveform continues to fall. The waveform of the point l in FIG. 5 is the output waveform of the gate timer 50a which is the inverted waveform of the waveform in FIG. 5j.

When the pulse having the waveform at point b in FIG. 5 is input to the reset timer 50b in FIG. 1, its output (waveform at point i in FIG. 5)
Falls at the time of the input, and rises after the set time T4 seconds of the timer 50b. And Figure 5b after standing up
It falls again with point waveform pulse input and rises after T4 seconds have elapsed. This is repeated thereafter. When the signal having the point waveform of FIG. 5i and the signal having the point waveform of FIG. 5j are input to the counter 50c,
The output of the counter 50c shown in FIG.
When the point waveform in FIG. 5j rises when the point waveform falls, it falls, and rises at the rise (reset) of the point waveform in FIG. 5i. This output serves as one input of the count detection timer 50d. In addition to this, the pulses of the point waveforms of FIG. 5i and the point waveform of FIG. 5l are also input to the count detection timer 50d. For this reason, the m-point waveform of FIG. 5 which is the output of the count detection timer 50d rises when the point waveform of FIG. 5i falls while the rise of the point waveform of FIG. It falls when it falls. The pulse having the point waveform in FIG. 5m is input to the output timer 50e together with the pulse having the point waveform in FIG. 5b. The waveform output from the output timer 50e shown in FIG. 5n rises at the rising edge of the waveform shown in FIG. 5b when the rising waveform of the waveform shown in FIG. .

In FIG. 1 which operates as described above, when the pulse of the point waveform of FIG. 5a continues within T3 seconds due to the occurrence of fire, the waveform of the point of FIG. 5j continues to fall, and the waveform of the point of FIG. The rising condition continues. In this rising state, when the point waveform in FIG. 5i rises, the point waveform in FIG. 5m rises at the rise. Moreover, when the 1-point waveform and the k-point waveform in the rising state of the 1-point waveform and the k-point waveform of FIG. 5 rise in FIG. 5m, the rising state continues for the set time T5 of the count detection timer 50d. In the event of a fire, if the pulse of the point waveform in FIG. 5m, which continues to rise in this way, is input to the output timer 50e, if the pulse of the point waveform in FIG. 5b is input to the timer 50e, the timer 50e The output point n waveform in FIG. 5 rises and is input to the power saving switch 19, the voice synthesis circuit 5, and the fire detection alarm output circuit 51. At this time, the power saving switch circuit 19 is turned on in the rising state of the point n waveform in FIG.
Operates, and the low frequency power amplifier circuit 6 is turned on. Also,
5n The fire detection warning output circuit 51 operates in the continuous rising state of the waveform, and the warning signal of the point waveform of FIG. 5o is output from the circuit 51, which is amplified by the low-frequency power amplifier circuit 6 and the point of FIG. The waveform becomes a waveform, and an alarm such as a buzzer sound or a bell sound for alarming the fire is issued from the alarm device 9. In this case, the point waveform in FIG. 5h overlaps with the point waveform in FIG. 5g which is the output of the voice synthesis circuit 5. At this time, the voice synthesizing circuit 5 is controlled by the point waveform of FIG. 6s which is the output of the output timer 50e, the g point waveform generated at the time of fire is turned off, and only the point waveform of FIG. 5o is amplified by the low frequency power amplifier circuit 6. . In addition to the signal of the point waveform shown in FIG.
A pulse having a point waveform is output, which is input to the LED output circuit 52 shown in FIG.
Make 3 blink.

The set values (implemented values) of the above timers and counters are, for example, as follows. T1 = 4 seconds T2 = 8 seconds to 10 seconds (however, depending on the voice synthesis sound output time) T3 = 0.5 seconds to 1.75 seconds T4 = 5 seconds to 15 seconds T5 = 22 seconds (20 seconds to 30 seconds) T6 = 3 seconds or more C1 = 5 counts (6 is acceptable) C2 = 0 counts

Reference numeral 17 in FIG. 1 is a battery voltage drop detection circuit for detecting a drop in the battery voltage, which detects the drop in the voltage of the power supply battery E and disables the battery E. It was designed so that it can be replaced before. Reference numeral 18 in FIG. 1 denotes a battery voltage drop alarm output circuit, which operates in response to a voltage detection signal output from the battery voltage drop detection circuit 17 when the battery voltage drop detection circuit 17 detects a drop in the battery E voltage. It operates to output an intermittent signal (waveform of point r in FIG. 6) and input it to the low frequency power amplifier circuit 6, and an alarm 9 issues a power supply battery low alarm signal. In particular,
When the battery DC 9V power supply E drops below a predetermined value, the battery voltage drop detection circuit 17 operates and the battery voltage drop warning output circuit 18 operates, and the signals of the point q waveform and the point r waveform in FIG. 6 are output. The point waveform in FIG. 6q passes through the LED output circuit 52 and blinks the LED 53, for example, once every 10 seconds. Also r
The dot waveform includes the vibration frequency, is amplified by the low frequency power amplifier circuit 6, and the alarm 9 issues an alarm sound of the voltage drop of the power supply battery E. By the way, the oscillation frequency of the low battery voltage warning output circuit 18 and the fire detection warning output circuit 51 is about 0.5 KHz to 3 KHz.

Reference numeral 20 in FIG. 2 denotes a light emitting element attached to the case 10, which is constantly lit when the power is ON, and indicates that the flame detection alarm with a sound generator of the present invention is in a detectable state. It is a thing. Reference numeral 21 in FIG. 2 is an alarm device mounting portion, and vertical members 22 are provided at appropriate intervals so that an audio alarm from the alarm device 9 mounted inside the vertical members 22 can be easily output to the outside through the gap between the vertical members 22. is there. Reference numeral 11 in FIG. 2 is an opening window,
This is for exposing the ultraviolet sensor 1 attached to the case 10 to the outside, and the opening window 11 is left open without stretching a glass plate or the like so that ultraviolet rays can easily enter. SW in FIG. 3 is a reset switch, which is for stopping the voice alarm when the voice alarm is confirmed, and is protruded from the bottom surface of the case 10 to the outside.

[0020]

The flame detection and alarm device with a voice generator of the present invention has the following various effects. ． Since the battery E is used as the power source, it can be used even in places where there is no commercial power source. Also, since a large power transformer and the like are not required, the ultraviolet sensor 1, the voice synthesizing circuit 5, the alarm 9, and various electric circuits can all be incorporated in one case 10, and the structure is simple and the voice is small and lightweight. It is possible to provide a flame detection and alarm device with an alarm device, which can be freely attached to a desired location. ． The flame identification circuit 4 incorporated in the case 10 can distinguish the ultraviolet ray of the flame from other ultraviolet rays, so that no malfunction occurs. ． Distinguish between the flame of a lighter or match that ignites a cigarette and the flame of the fire. In the former case, that is the smoking area,
It is possible to generate a warning message by issuing a voice message saying that it is a place where fire is strictly prohibited, and in the latter case, an alarm sound can be generated to notify that there is a fire. A buzzer will not occur and a fire alarm suitable for the actual situation will be possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a flame detection and alarm device with a sound generator according to the present invention.

FIG. 2 is a front view of the flame detection alarm device with the sound generator.

FIG. 3 is a rear view of the same flame generator-equipped flame detection alarm with the back cover removed.

FIG. 4 is a waveform explanatory diagram showing an operation of a flame identification circuit in the flame detection and alarm device with the sound generator.

FIG. 5 is an explanatory waveform diagram showing the operation of the fire identification circuit in the flame detection and alarm device with the sound generator.

FIG. 6 is a waveform explanatory diagram showing an operation of a battery voltage drop detection unit in the flame detection alarm with the sound generator.

[Explanation of symbols]

 1 UV sensor 2 DC-DC converter circuit 3 Drive circuit 4 Flame identification circuit 5 Voice synthesis circuit 6 Low frequency power amplification circuit 9 Alarm device 10 Case 11 Open window 50 Fire identification circuit 51 Fire detection alarm output circuit E Power battery

[Procedure amendment]

[Submission date] August 9, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

In FIG. 1 which operates as described above, when the pulse of the point waveform of FIG. 5a continues within T3 seconds due to the occurrence of a fire, the point waveform of FIG. 5j continues to fall, and the waveforms of point 51 and k of FIG. The rising condition continues. In this rising state, when the point waveform in FIG. 5i rises, the point waveform in FIG. 5m rises at the rise. Moreover, when the 1-point waveform and the k-point waveform in the rising state of the 5m point waveform in FIG. 5i rise, the rising state continues for the set time T5 of the count detection timer 50d. In the event of a fire, if the pulse of the point waveform in FIG. 5m, which continues to rise in this way, is input to the output timer 50e, if the pulse of the point waveform in FIG. 5b is input to the timer 50e, the timer 50e The output point n waveform in FIG. 5 rises and is input to the power saving switch 19, the voice synthesis circuit 5, and the fire detection alarm output circuit 51. At this time, the power saving switch circuit 19 is turned on in the rising state of the point n waveform in FIG.
Operates, and the low frequency power amplifier circuit 6 is turned on. Also,
5n The fire detection warning output circuit 51 operates in the continuous rising state of the waveform, and the warning signal of the point waveform of FIG. 5o is output from the circuit 51, which is amplified by the low-frequency power amplifier circuit 6 and the point of FIG. The waveform becomes a waveform, and the alarm 9 gives an alarm such as a buzzer sound or a bell sound for notifying a fire. In this case, the point waveform in FIG. 5h overlaps with the point waveform in FIG. 5g which is the output of the voice synthesis circuit 5. At this time, the voice synthesizing circuit 5 is controlled by the output waveform of the output timer 50e shown in FIG. 6s, the g-point waveform is turned off at the time of fire, and only the low-frequency power amplification circuit 6 amplifies the point waveform shown in FIG. 5o. In addition to the signal of the point waveform of FIG. 5o, the pulse of the point waveform of FIG. 5p is output from the fire detection alarm transmission circuit 51, which is input to the LED output circuit 52 shown in FIG. 1, and the LED 53 is output by the output of the circuit 52. Make it blink.

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (2)

[Claims] 1. An ultraviolet sensor 1 that operates by sensing ultraviolet rays contained in a flame, a power supply battery E, and a DC-DC converter that boosts the voltage of the power supply battery E to the operating voltage of the ultraviolet sensor 1. Circuit 2, a drive circuit 3 for causing the ultraviolet sensor 1 to output a pulse signal, and a pulse signal output from the ultraviolet sensor 1 that is generated by detecting the ultraviolet rays of the flame or other ultraviolet rays. A flame discrimination circuit 4 for discriminating whether or not it has occurred, a voice synthesizing circuit 5 for generating a voice which operates by an output signal from the flame discriminating circuit 4 and prohibits the use of fire, and the voice synthesizing circuit 5.
The low frequency power amplification circuit 6 for amplifying the signal sound of No. 1 and the alarm 9 for outputting the sound from the low frequency power amplification circuit 6 are incorporated in one case 10 so that the ultraviolet ray sensor 1 can detect ultraviolet rays. A flame detection alarm provided with a sound generator, which is attached to the case 10. 2. The flame detection and alarm device with a voice generator according to claim 1, wherein the output signal of the ultraviolet sensor 1 indicates whether a flame of a fire is sensed or another flame is sensed. A flame detection and alarm device with a sound generator, characterized by incorporating a fire identification circuit 50 for identifying by duration and a fire detection and alarm output circuit 51 for outputting an alarm signal according to the output from the fire identification circuit 50.