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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a conventional alarm sound
generator. FIG. 2 is a block diagram of an alarm sound generator according to an embodiment of
the present invention. FIG. 3 is a waveform diagram of signals appearing at various places in the
alarm sound generator in one embodiment of the present invention. 1 first alarm generation
control section ......, 1a ...... second alarm generation control unit, 2 ...... alarm sound oscillation
unit, 3 ... ... speaker driving circuit , 4 и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и.
[Detailed description of the invention] ? ? ? This invention relates to the notification of the
abnormal condition or the condition of reaching the set value, etc. which occur at the time of
operation of the device a, especially the alarm which has a plurality of kinds of requirements for
the notification and responds to it. The present invention relates to a sound generator. As shown
in FIG. 1, the conventional alarm generation circuit includes an alarm generation control circuit
1.1a including a one-shot circuit or the like that generates a single pulse by an alarm signal from
a sensor or a swin etc. as shown in FIG. The output signal of the pulse oscillator 2.2a which
generates an oscillation output at a constant frequency transfer time and time is sent out to the
speaker 4 etc via the speaker drive (b) h3. When the alarm requirement extends to a plurality of
types, the width of the single pulse of the alarm generation control circuit addressed to the alarm
requirement is made different for each / requirement, and the oscillation frequency of the pulse
oscillator oscillated at the specific frequency of the single pulse time is phased. Differently
generate W different types of alarm requirements separately in the combination of these sheep's
pulse time and oscillation frequency, let this be sensed by the operator [2] of the device, and
identify the alarm based on which alarm requirement Provided an alarm generation circuit. (1) It
is possible to distinguish between about three to three kinds of alarm requirements and make the
operator VC island distinction if the single pulse time and oscillation frequency are selected as
one kind of constant as described above, but the conventional alarm generation circuit Among
them, the pulse oscillator is the most complicated circuit, and increasing it in response to the
increase in alarm requirements not only complicates the configuration of the entire alarm
generation circuit but also is unfortunately uneconomical. In addition, it is necessary to achieve a
circuit for obtaining an accurate pulse frequency from the configuration of the pulse oscillator
itself, and it is necessary to select and use components having a high accuracy constant, and by
combining such components As described above, in order to make the specific frequency of each
pulse oscillator different from each other as described above, the heavy duty part for setting the
frequency must be corrected. In order to eliminate the above-mentioned drawbacks, this
invention was made to eliminate the above-mentioned drawbacks (3), and to provide several
types of pulse oscillators corresponding to a plurality of alarm requirements. To provide various
pulse oscillation outputs in changing the division ratio of one divider in accordance with the
requirements of each bell alarm. The following is a description of FIG. 2 showing one
embodiment of the present invention. An alarm generation control circuit 1.1a has different
output durations of single pulses.
5 is a logic OR gate, and a signal is generated at the output when a signal is given to either of two
persons. Reference numeral 6 denotes a frequency divider, which has terminals to which signals
from various outsides are applied. Among these terminals, e is a constant signal with a clock
signal described after the output signal of the logic OR gate 5 as a source signal. It is determined
whether or not there is a frequency division output according to the conditions to be squeezed. In
this embodiment, the terminal e (hereinafter referred to as a rice-pull terminal). If the logic signal
"1" is given to the circuit), a divided output is produced, the logic signal "0" is given to the
terminal, and the divided signal does not occur. Next, the terminal m (hereinafter t4) is referred
to as a lower mode terminal. ) Is a terminal for determining the division ratio, and if the logic
signal ?1? is given, it becomes a division ratio of 6 minutes /. If the logic signal rOJ is given,
the division ratio of Become. The terminal C is a terminal for receiving a clock signal from the
outside (hereinafter referred to as a clock prince. Here, the clock signal is the issue of a basic
clock pulse used for external synchronous control, etc. This clock signal can be stored in one
place if the device is specified to an electronic computer. Those skilled in the art can easily infer
that it is a matter of course. The branch operation of the frequency divider 6 means that in this
embodiment, / / which is a fraction of the number of pulses of the externally applied clock signal
is output. Further, the frequency f is a divided output terminal of the frequency divider 8
(hereinafter, f is referred to as a divided output terminal), and the divided output is based on the
enable signal, the mode terminal and the logic signal applied to the clock terminal. A divided
output is produced at the terminal f. The signal of the divided output terminal f receives a signal
from the connected speaker combination circuit 3 and the speaker 4 and generates an alarm
sound. FIG. 3 shows in a pulse waveform what kind of alarm sound is generated corresponding to
the alarm requirement, and the signal waveform input to the first alarm signal terminal AL shown
in FIG. 2 is A. The signal waveform shown is input to the second alarm signal bath AL2 is shown
by B. FIG. 3 shows the case where the signals are simultaneously input to both the first alarm
signal terminal ALL and the second alarm signal terminal AL2. ??? W shows that the alarm
requirements of 72 buildings occur simultaneously. Further, as described above, the output
signal of the alarm generation control circuit is a single pulse, and the output time width is
different from each other. In this embodiment, the output waveform from the alarm generation
control circuit 1 is indicated by C, the time width of the waveform tehalus is indicated by tl, and
the output waveform from the alarm generation control circuit 1a is a waveform indicated by D.
It is t2, and tl is selected to have a smaller time width than t2.
As an output signal from the alarm generation control circuit 1.1a, an output signal is generated
from the logic OR gate 5 using this as an input signal (6), and the time width of the output signal
is the same as the waveform shown by the waveform G. It is given to the t-divider 8. That is to
say, this t2 time divider is enabled for frequency division operation. The clock signal applied to
the clock terminal C is indicated by the waveform E, and the clock signal C is always supplied to
the clock terminal C without any signal from the first alarm signal terminal to the signal applied
to the second alarm signal Sachiko. There is. First, when the signal shown by the waveform is
given to the enable terminal e, the divider 6 starts dividing operation. Since the signal is given to
the mode terminal m of the divider 6 during the time t1 shown in the and the form C, the division
ratio is determined to be / \ identity / / 6 minutes of the clock signal from the division output
terminal f The pulse signal of / is output. After this, the waveform t1 disappears, and no signal is
supplied to the mode terminal m. Therefore, the division ratio is determined to be 5 minutes /
and a pulse signal of / slip of the clock signal is output from the divided output terminal f. . (7)
The waveform H shows that the high frequency pulse h1 of time T1 is generated when the / 6
min./division rate is generated, and the time low frequency pulse h2 of T2 is generated when the
division rate of g min. . After T1 and 12 hours, the divider output car is not generated until the
rising signal is supplied again to the first alarm signal terminal to the second alarm signal outer
core. The operator can listen to two types of high and low frequency pulse signals shown by
waveform H in FIG. 3 as audio frequencies via the speaker drive circuit 3 (see FIG. 2) and the
speaker 4 (see FIG. 2). As described above, in the embodiment of the present invention, the
operator can sense even when the alarm requirement of the key press occurs simultaneously,
and it can be detected other than the waveform 0-D shown in the first diagram. Third. Fourth! ?:
To correspond to the alarm requirement and want to increase the pulse width in the relationship
between tl and t12 t t3 (t4 (not shown)) and to make the division ratio smaller than the values
corresponding to tl and t2, respectively It is possible to generate the required alarm oscillation
sound, and for the operator, which alarm all the cases cause (1? ) It can be identified and heard
whether it is a ram oscillation sound. According to this invention, instead of providing a plurality
of alarm sound oscillation circuits for conventionally used country number alarm requirements,
control of division ratio change control of division capable flat switchable dividers corresponding
to each alarm requirement In order to identify which of the alarm requirements has occurred
among the alarm requirements, the alarm sound generation and retention frequency is acquired
by the num- ber of numbers in seven units, and the alarm is generated in combination with the
alarm occurrence time being different. It generates oscillation noise and as a result, the
configuration of the alarm sound generation circuit becomes extremely simple, and the number
of parts can be reduced, and adjustment parts can be eliminated, thereby improving reliability
and economy. .
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jps5389182, description
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