JP3084120B2 - Alarm device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm device which issues an alarm in response to a plurality of alarm inputs.

[0002]

2. Description of the Related Art As an alarm device that issues an alarm in response to a plurality of alarm inputs, for example, the amount of water stored in a water storage tank is detected using a sensor (including a sensor or the like) such as a liquid level sensor. In some cases, when a plurality of abnormalities such as a water storage state occur, an alarm is issued and an abnormal state is displayed.

[0003]

However, in the conventional alarm device of this type, only an alarm is issued to notify that an abnormal condition has occurred. Had to be confirmed. The present invention has been made in view of the above points, and an object of the present invention is to provide an alarm device that can easily identify and determine the contents of an alarm without going to the alarm device. .

[0004]

According to the present invention, in order to attain the above object, two different alarm signals are taken in, and an output corresponding to each of the two alarm signals is generated. Depending on the output , the ON width and the OFF width
Different pulse signals and pulse signals obtained by inverting the pulse signals
If the output of the two types of oscillation means for generating a pulse signal, input means corresponding to one of the alarm signals and No. is obtained, intermittent operation depending on the output of the oscillation means corresponding to the output It has an alarm notification means.

[0005]

The present invention is characterized in that it is configured as described above.
The alarm notification means performs intermittent operation according to each alarm signal.
And the interval of the intermittent operation differs for each alarm signal.
Therefore, without going to the alarm device, it is possible to easily identify and determine the alarm content from the alarm notification state , and
Two types of alarm notification according to the type of pulse signal
When two alarm notification means are provided, two alarm signals
When two numbers are input simultaneously, two alarm
Information, but one pulse signal reverses the other pulse signal.
Because the pulse signal is inverted, one of the alarm
During the alarm notification, the other alarm notification means performs the alarm notification.
And the two alarm notification means perform alarm notification simultaneously.
Power consumption of the two alarm notification means
The power consumption can be reduced to the level corresponding to the units.

[0006]

1 to 4 show an embodiment of the present invention. The alarm device of this embodiment has two input terminals T ₁ , T ₂ and a common terminal C, and two types of contact outputs r ₁ , r ₂ (for example, outputs of two types of independent sensors) connect the AC power supply AC. The common terminal C is connected between _{one of} the input terminals T ₁ and T ₂ and the common terminal C via the common terminal C.

The input of this alarm device includes contact outputs r ₁ ,
An input circuit 1 for taking in an alarm signal input in response to opening and closing of r ₂ is provided. This input circuit 1 is connected to diodes D ₁ , D
₂ , a rectifying / smoothing circuit comprising resistors R ₁ and R ₂ , capacitors C ₁ and C ₂ , and surge absorbers ZNR ₁ and ZNR ₂ . The DC voltage as an output of the input circuit 1 is input to a display circuit 4 described later.

When an alarm signal is input to the input circuit 1, that is, when one or both of the contact outputs r ₁ and r ₂ are closed, the connection between the input terminals T ₁ and T ₂ and the common terminal C is made. Is connected to an AC power supply AC, and the power supply circuit 2 creates a power supply for each circuit described later using the AC power supply AC.
The power supply circuit 2 comprises a rectifying / smoothing circuit including diodes D ₃ and D ₄ , a resistor R ₄ and a capacitor C ₃ , and a constant voltage circuit including a resistor R ₅ , a zener diode ZD and a capacitor C _4. When one of the contact outputs r ₁ and r ₂ is closed, the AC power supply A
C is rectified and smoothed, and the rectified and smoothed output is made constant to produce a power supply.

The power supply from the power supply circuit 2 oscillates the light emitting diodes LED ₁ and LED ₂ in accordance with the output of the oscillation circuit 3 when the alarm signal is input. A display circuit 4 for intermittent lighting at a fixed cycle), a buzzer circuit 5 for sounding a buzzer BZ when an alarm is input, a buzzer stop circuit 6 for stopping the sound of the buzzer BZ, and release of the buzzer BZ sound stop state by the buzzer stop circuit 6. Supplied to the buzzer stop release circuit 7.

The oscillation circuit 3 includes transistors Q ₂ , Q ₃ ,
Capacitor C _5, C _6, and astable multivibrator comprising resistors R ₆ to R ₉ and a diode D _5, D _6, the light emitting diodes LED _1, LED ₂ of the display circuit 4 in accordance with the output of the astable multivibrator It is composed of transistors Q ₁ and Q ₄ for controlling lighting. Here, the capacitances of the capacitors C ₅ and C ₆ of the astable multivibrator are set to different values, and the ON periods of the transistors Q ₂ and Q ₃ are different. Needless to say, the transistors Q ₂ and Q ₃ are turned on and off reciprocally.

The display circuit 4 flickers the occurrence of an abnormality.
Light-emitting diode LED₁, LE
D_TwoAnd these light emitting diodes LED₁, LED_TwoPoint of
Transistor Q for light control_Five, Q₆And light emitting diode
LED₁, LED_TwoBuzzer circuit according to flicker lighting of
Buzzer BZ of No. 5 flickers (intermittently sounds at a fixed cycle)
Transistor Q₇It consists of here
And light emitting diode LED₁And transistor Q_FiveSeries
Circuit and light emitting diode LED_TwoAnd transistor Q₆of
The series circuit is connected between the output of the power supply circuit 2 and a current limiting resistor.
Are connected in parallel, and the current limiting resistance is
₇Resistor R for bias adjustment₁₈~ R ₂₀Composed of
You. And the transistor Q_Five, Q₆The base circuit of
The output of the input circuit 1 is input and the transistor of the oscillation circuit 3
TA Q₁, Q_FourWith transistor Q_Five, Q₆Of the base current
It is configured to control the supply state. Therefore, the transi
Star Q₁, Q_FourIs off, the transistor Q_Five, Q
₆Turns on and the light emitting diode LED₁, LED_TwoBut
It is lit.

The buzzer circuit 5 includes a buzzer BZ, an oscillation circuit including a transistor Q ₁₀ for determining the frequency of a sound emitted from the buzzer BZ, a coil L, a capacitor C ₁₂ , a diode D _9, and resistors R ₃₃ and R _34. , it is constituted by the transistors Q _9, which is provided to control the buzzer BZ (to allow stop ringing). SCRQ buzzer stop circuit 6, the base circuits, and particularly the resistance R ₃₀ of the transistor Q _9, across the series circuit of the capacitor C _11, which are connected in parallel via a light emitting diode LED _3
11, the switch SW to trigger this SCRQ _11, resistors R _25, are constituted by a trigger circuit consisting of R ₂₆ and capacitor C _9. In this buzzer stop circuit 6, the switch S
When W is turned on, SCRQ ₁₁ is triggered and SCRQ ₁₁
Q ₁₁ is turned on, turns off the transistors Q _9, stopping the buzzer BZ. At this time, indicating that the light emitting diode LED ₃ is stopped forcibly buzzer BZ on.

The buzzer stop release circuit 7 sounds the buzzer BZ.
Operation is forcibly stopped by the buzzer stop circuit 6, and
When another alarm signal is input, the buzzer stop circuit 6
Release the state in which the buzzer BZ has stopped sounding, and
The user BZ. Release this buzzer stop
The circuit 7 includes a transistor Q₉Connected to both ends of the base circuit
Transistor Q₈And one output of the input circuit 1
Differentiating capacitor C ₇And resistance R₁₇Differentiation circuit consisting of
And a capacitor C for differentiating the other output of the input circuit 1₈
And resistance R_{twenty four}And one of the differentiators
When the output of₈Turn on
Iod D₇, D₈Or circuit consisting of
You.

The operation of this embodiment will be described below. Now
Contact output r₁Is closed and an alarm signal is input.
Then, power is supplied from the power supply circuit 2 to each of the circuits 3 to 7.
You. As a result, the oscillation circuit 3 starts oscillating. one
The input terminal T of the input circuit 1₁Alarm signal input
Input terminal T₁DC voltage is output from the output corresponding to
This output is a light emitting diode LED_TwoConnected in series
The connected transistor Q ₆Is applied to the base of the
Iodo LED_TwoLights up. However, this transistor
Q₆Astable multivibrator output
Transistor Q that turns on and off by force₁Also connected in parallel
The transistor Q₆Is the transistor Q₁But
LED turns on when the LED is turned off._TwoIs pretend
Lights up. That is, this light emitting diode LED_Twoof
Lighting is the transistor Q of the oscillation circuit 3. _TwoDepending on the side output
The lighting is controlled.

Conversely, the contact output r_TwoIf is closed,
Although a detailed description is omitted, the above-described contact output r₁Abbreviation
Similarly, the light emitting diode LED₁Is flickering
And this light emitting diode LED₁Is an astable multivibrator
Transistor Q_ThreeThe lighting is controlled according to the output of the
It is. Here, in the present embodiment, the above-mentioned unstable multivibrator is used.
Of the condenser C_Five, C ₆Have different capacities
Therefore, each output of the astable multivibrator has two types, long and short.
A rectangular wave output (binary signal) having on-duty
ing. Therefore, it is displayed by input of any alarm signal
It can be seen at a glance whether the display of the circuit 4 is being performed. In addition,
In this case, the difference between the on-duties is sufficiently visible to humans
Needless to say, it needs to be as small as possible. When
At this time, in the case of this embodiment, the oscillation circuit 3
Operation was performed only at the input of
You can make it work.

FIG. 2 shows a simplified circuit section which is a feature of the present embodiment. The 2 OR circuit OR ₁ of the power supply circuit 2 fulfill its function, the AND circuit the AND _1, the AND ₂ are each transistors Q _1, Q
₅ and transistor Q ₅ base circuit and transistor Q
₄ , Q ₆ and the base circuit of the transistor Q ₆ perform its function.

Hereinafter, the operation of the present embodiment will be described in further detail using this simplified circuit. First, the case where alarm signals corresponding to the contact output r ₁ is input in the portion of b in FIG. When an alarm signal is input as shown in FIG.
The output to the input period of the OR circuit OR ₁ of the alarm signal becomes high level, as shown in FIG. (C), the oscillation circuit 3 operates. 4 (d) of the oscillation circuit 3 at this time,
Outputs with different on-duties shown in (e) are input to AND circuits AND ₁ and AND ₂ , respectively. In this case, since only the contact output r ₁ is ON, the output signal indicating the AND circuit the AND ₁ in FIG. 4 (f), thereby emitting diode LED ₁ is turned flicker. In this case, the lighting period of the light emitting diode LED ₁ is longer than the turn-off period.

Conversely, a case where an alarm signal corresponding to the contact output r ₂ is input will be described with reference to FIG. When the alarm signal is inputted as shown in FIG. 4 (b), the as with the above case, the output of the OR circuit OR ₁ becomes high level, as shown in FIG. (C), to operate the oscillation circuit 3 . And
At this time, the outputs of the oscillation circuit 3 having different on-duties shown in FIGS. 4D and 4E are AND circuits AND ₁ ,
Each is input to AND ₂ . However, since only the contact output r ₂ In this case it is on, the output signal indicating the AND circuit the AND ₂ in FIG. 4 (g), thereby the light-emitting diode LED ₂ is turned flicker. In this case, the lighting period of the light emitting diode LED ₂ is shorter than the off period.

Next, the case where both the alarm signals corresponding to the contact outputs r ₁ and r ₂ are input will be described with reference to FIG. These alarm signals FIG. 4 (a), when the input (b), the high as shown in the same manner as in the above case In this case, the output of the OR circuit OR ₁ is FIG. (C) Level, and the oscillation circuit 3 operates.
(D), outputs with different on-duties shown in (e),
Are input to AND circuits AND ₁ and AND ₂ , respectively.
In this case, since the contact outputs r ₁ and r ₂ are both on, the AND circuits AND ₁ and AND ₂ output the signals from FIG.
The signal shown in (g) is output, whereby both the light emitting diodes LED ₁ and LED ₂ flicker.

The above is the explanation regarding the warning display.
The alarm notification will be described below. As described above, when one of the light emitting diodes LED ₁ and LED ₂ lights up,
Transistor Q ₇ is turned on and off according to the lighting of the light emitting diodes LED _1, LED _2. As a result, power is supplied from the power supply circuit 2 to the buzzer circuit 5, and the buzzer BZ
Sounds. However, in this case, the light emitting diode LE
Since power is supplied intermittently in response to flickering of D ₁ and LED ₂ , the buzzer BZ also intermittently sounds, that is, flickers. Incidentally, when the alarm signal is input, the voltage on the base of the transistor Q ₉ from the power supply circuit 2 is applied, the transistor Q ₉ is turned on, the buzzer circuit 5 at the time of input of the alarm signal is turned ringing ready I have.

FIG. 3 shows a simplified circuit including the buzzer circuit 5 in the simplified main circuit. Transistor Q ₇ is as OR circuit OR ₂ in FIG. 3 plays its operation. Here, as is clear from the above description, the buzzer BZ includes the transistor Q when any _one of the light emitting diodes LED ₁ and LED ₂ is flickering.
_{Since the} power is supplied intermittently through the line ₇ ,
As shown in (a) and (b), the buzzer BZ also flickers.

When both alarm signals are input, the buzzer BZ is continuously lit as shown in FIG. This is because the lighting and extinguishing periods of the light emitting diodes LED ₁ and LED ₂ are reciprocal. That is, the one light emitting diode light-off period of the LED _1, LED _2, the other light emitting diodes LED _1, and LED ₂ is lit, since the transistor Q ₇ is continuously turned on.

To stop the buzzer BZ, the switch SW of the buzzer stop circuit 6 is turned on. This turns SCRQ ₁₁ on, causing transistor Q ₉
Is turned off, and the sounding of the buzzer BZ is stopped. At this time, the light emitting diode LED is turned on by turning on the SCRQ _11.
3 lights up to indicate that the buzzer BZ has been forcibly stopped.

If one of the alarm signals is input and the buzzer BZ which has flickered at this time is forcibly stopped, and the other alarm signal is input, in this case, the differentiating circuit is activated. , The transistor Q ₈ is turned on, and the buzzer BZ forcibly stopped sounding by the buzzer stop circuit 6 is released. For example, in an alarm signal corresponding to the contact output r _1, buzzer BZ is rung, if the buzzer BZ is stopped by the buzzer stop circuit 6, an alarm signal corresponding to the contact output r ₂ is input, The output of the differentiating circuit consisting of the capacitor C ₇ and the resistor R ₁₇ is a diode D
₇ through the input to the transistor Q _8, the transistor Q ₈ is turned on. As a result, both ends of SCRQ ₁₁ are short-circuited, the conduction holding state of SCRQ ₁₁ is released, transistor Q ₉ is turned on, and buzzer BZ sounds again. Therefore, the occurrence of another abnormality can be notified even during the period in which one abnormality occurs. In this state,
Further, when the switch SW of the buzzer stop circuit 6 is turned on to stop the sounding of the buzzer BZ, the buzzer BZ is thereafter kept in the sound stop state.

When the abnormal state is removed and one or both of the contact outputs r ₁ and r ₂ are opened, the state returns to the initial state at that time. At this time, if the SCRQ ₁₁ is kept in the conduction holding state and the sounding of the buzzer BZ is stopped, the SCRQ ₁₁ is turned off. In addition, the present invention can be applied to various alarm devices other than the alarm device for alarming the abnormality of the water tank, and the number of abnormal inputs is not necessarily two, and the present invention can be applied to the case of two or more. Needless to say.

[0026]

As described above, according to the present invention, the input means for taking in two different alarm signals and generating outputs corresponding to the respective alarm signals , and the ON width and the ON width in accordance with the output of the input means for each alarm signal. Pulse signals having different off-widths and the pulse signals
Oscillating means for generating two types of pulse signals, ie, a pulse signal obtained by inverting the signal, and, when an output of the input means corresponding to one of the alarm signals is obtained, according to an output of the oscillating means corresponding to the output. formed comprise alarm notifying means you intermittent operation Te
Characterized in that the alarm notification means responds to each alarm signal
Intermittent operation is performed, and the interval of the intermittent operation is
Therefore, the alarm contents can be easily identified and determined from the alarm notification state without going to the alarm device, and the alarm information can be determined according to the two types of pulse signals.
In the case where two alarm notification means for informing are provided,
When two alarm signals are input simultaneously, two alarm signals
Means provide an alarm, but one pulse signal
Because the pulse signal is an inverted version of the pulse signal,
While the alerting means issues an alert, the other alerting means
No alarm notification is performed, and two alarm notification means are
Since there is no alarm notification, the two alarm
The power consumption can be reduced to the power consumption of one device.

[Brief description of the drawings]

FIG. 1 is a specific circuit diagram of one embodiment of the present invention.

FIG. 2 is a circuit diagram schematically showing a main circuit of the above.

FIG. 3 is a circuit diagram in a case where a main part circuit of the above is simplified to include a buzzer circuit.

FIG. 4 is an operation explanatory view of the above.

[Explanation of symbols]

1 input circuit 3 oscillation circuit 4 display circuit 5 Buzzer circuit r _1, r ₂ contact output LED _1, LED ₂ emitting diodes BZ buzzer

Claims (1)

(57) [Claims] 1. An input means for receiving two different alarm signals and generating an output corresponding to each of the two alarm signals, and a difference between an ON width and an OFF width according to an output of the input means for each alarm signal.
Pulse signal and a pulse signal obtained by inverting the pulse signal
2 the type of oscillating means for generating a pulse signal, when the output of the input means corresponding to any of the warning signal is obtained, you intermittent operation depending on the output of the oscillation means corresponding to the output warning of An alarm device comprising a notification unit.