JPH0613520Y2 - Weather trend device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a weather trend device that measures the current atmospheric pressure using a barometer and predicts and displays the future weather from the measured signal. In particular, the present invention relates to a device that displays a plurality of weathers by blinking a single display device according to the predicted weather.

(Prior Art) Japanese Patent Application Laid-Open No. 63-14428 discloses a conventional device of this type.
There was one incorporated in the timepiece disclosed in Japanese Patent No.

In this device, a plurality of parts for displaying the weather are provided in the display part of the clock, and the predicted weather is displayed by switching and lighting the weather display.

(Problems to be Solved by the Invention) In the above-described conventional device, since a plurality of display units including LEDs, liquid crystals, and the like are required, there is a problem that the display unit becomes large and the cost becomes high.

An object of the present invention is to provide a weather tendency device that displays a plurality of weathers by a single display, downsizes the display unit, reduces the cost, and facilitates incorporation into other devices.

(Means for Solving the Problem) A weather tendency device of the present invention detects a rise and fall of a change in atmospheric pressure with a constant value width and a change direction thereof and outputs weather information corresponding to the reference signal generating circuit. A weather determination circuit, a pulse signal from a reference signal generation circuit, and a pulse generation circuit that inputs weather information and changes the number of output pulses within a predetermined time according to the weather information, and responds to this output. And a blinking display device.

(Operation) In the weather trend device of the present invention, when the atmospheric pressure rises or falls within a constant value range, weather information indicating "sunny" or "rainy" is output from the weather judgment circuit, and the "deterioration" according to the changing direction of the atmospheric pressure. ] And weather information indicating “freedom” are output.

This weather information is applied to the pulse generation circuit together with the pulse signal having a predetermined cycle. This pulse generation circuit outputs, for example, 4, 3, 2, 1 pulses in 1 second corresponding to "clear", "good", "worse", and "rain", respectively.

In response to the pulse from the pulse generating circuit, the display device blinks, for example, four times when it is "fine" and once when it is "rainy" to display the predicted weather.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a circuit configuration of a weather trend device according to an embodiment of the present invention, FIG. 2 is a front view showing the appearance of the weather trend device shown in FIG. 1, and FIG. 3 is a sectional view thereof. .

First, the weather display in this embodiment will be described with reference to FIGS. 2 and 3.

The weather trend device in this embodiment includes the first display unit 23.
And a second display unit 11 is provided.

The first display unit 23 is composed of an LED and blinks in response to a signal from a control circuit described later.

The second display unit 11 is composed of a circular weather display plate 13 on which a plurality of pictures showing weather conditions are drawn, and a pointer 17 attached to a drive shaft 15 protruding from the center thereof. The surface of the weather display plate 13 is divided into four parts, and the four divided regions 13a to 13d are respectively painted with pictures showing "sunny", "deteriorated", "rain", and "ideal". ing. Usually, the weather is worse on the basis of fine weather due to the passage of a low pressure, and becomes better when the low pressure passes. Therefore, basically, "sunny", "worse",
Since it changes in the order of "rain" and "free", the weather indicator 13
The paintings are drawn in the clockwise direction in this order.

Reference numeral 19 is a drive unit that drives the first and second display units 23 and 11, and accommodates a control circuit and a motor described later.

Reference numeral 21 is the first and second weather display portions 23 and 11 and the drive portion 1.
9 is a case to be attached.

In this weather tendency device, when "rain" is predicted, the first weather display unit 23 repeats the operation of blinking once per second, and the pointer 17 is in a state of pointing to the "rain" area 13c. .

In this state, if it is predicted that the atmospheric pressure will rise and the weather will improve, the first display section 23 will change to a state of blinking three times in one second, and the second display section 11 Guideline 1
7 is driven clockwise 1/4 turn and is in the "free" area 13d.
Stop inside.

After that, when it is predicted that the atmospheric pressure will decrease again and the weather will become rainy, the first display unit 23 will once again be in the state of blinking once per second, and the pointer 17 will drive to the "rainy" region 13c. Be stopped. At this time, since the step motor that rotates only in one direction is used in this embodiment, the pointer 17 is driven clockwise 3/4 rotation. If a reversible step motor is used, it may be driven 1/4 turn counterclockwise.

As described above, the weather trend device according to the present embodiment displays the weather forecast on the second display unit 11 while immediately switching and displaying the forecast weather on the first display unit 23.

Next, the circuit configuration of the weather tendency device for displaying the weather will be described with reference to FIG.

Reference numeral 3 denotes a power-on-clear circuit that outputs a signal when the battery is turned on. The resistor 5 and the capacitor 7 connected in series between the H level and the ground, and the signal from between are inverted to form a power-on-clear signal PC. Output inverter 9
It consists of and.

A weather determination circuit 10 includes a first and second contact points 4 and 6, and an atmospheric pressure change detector 2 including a contact piece 8 which moves between the contact points 4 and 6 in accordance with an atmospheric pressure change of a constant value width, and a first and second contact point 4 , 6
The resistors 12 and 14 connected between the output lines from the respective terminals and the ground, and the first and second contacts 4,
Bounce delay circuits (hereinafter abbreviated as “BD”) 16 and 18 connected to the output lines from the BD 6 and the BD 1
A flip-flop (hereinafter abbreviated as "FF") 24 which inputs the signal from 6 to the set input S and inputs the signal from the BD 18 together with the signal PC from the power-on-clear circuit 3 to the reset input R via the OR gate 22. And BD
Signals from 16 and 18 are supplied to inverters 26 and 28, respectively.
Input to each one input terminal through and output Q of FF24,
And AND gates 30 and 32 for inputting the signals from the respective terminals to the respective other input terminals.

The atmospheric pressure change detector 2 in the present embodiment mechanically detects atmospheric pressure, but it is also possible to use an atmospheric pressure change detector 2 which detects the atmospheric pressure by a resistance bridge or the like.

Reference numeral 31 denotes a pulse generator, which is an AND gate 33 for inputting a 1, 2, 4, 8 Hz signal from a reference signal generating circuit described later, and an AND gate for inputting a 1, 3, 8 Hz signal and an inverted 2 Hz signal. A gate 35, an AND gate 37 that inputs only signals of 1, 2 and 8 Hz, an AND gate 39 that inputs only signals of 1 and 8 Hz, an OR gate 41 that inputs output signals of the AND gates 35 and 37, and one input terminal To "rain"
Signals from the BD 18, AND gates 32, 30 and BD 16 indicating "clear", "deteriorated" and "clear" are input respectively, and the AND gate 33 and OR gate 4 are connected to the other input terminals.
1. AND gates 43, 45, 47, 49 for inputting signals from AND gates 37, 39, respectively, and an OR gate 51 for inputting output signals thereof.

Reference numeral 53 is a first display device, which is an amplifier 55 for amplifying a signal from the OR gate 51, and an LE as a first display portion for inputting an output signal thereof as shown in FIGS. 2 and 3.
It is composed of D57 and a resistor 59 connected in series between its output end and the ground.

Reference numeral 34 denotes a deteriorated free-form memory circuit, which inputs the signal from the AND gate 30 to the set input S and inputs the signal from the AND gate 32 together with the signal PC from the power-on-clear circuit 3 to the reset input R via the OR gate 36. F to enter
It is composed of F38.

Reference numeral 40 denotes a display position determination circuit, which is, for example, the first transition when transition is made in the order of “fine”, “deteriorated”, “rain”, and “desirable”, or “deteriorated” to “sunny” or “improved”. If the transition from “” to “rain” is the second transition, it is composed of a first detection circuit 42 for detecting the first transition and a second detection circuit 44 for detecting the second transition.

The first detection circuit 42 includes AND gates 46 and 48 for inputting the signals from the BDs 16 and 18 to the respective one input terminals and for inputting the output of the FF 38 and the signal from the Q to the respective other input terminals, and an AND gate. One-shot circuits 50 to 5 for inputting output signals of 30, 32, 46 and 48, respectively
6 and an OR gate 58 for inputting the output signal thereof.

Further, the second detection circuit 44 inputs the signals from the BDs 16 and 18 to the respective one input terminals and outputs the output Q of the FF 38,
It is composed of AND gates 60 and 62 for inputting the signals from each to the other input ends, one-shot circuits 64 and 66 for inputting the output signals thereof, and an OR gate 68 for inputting the output signals thereof. .

Reference numeral 69 is a reference signal generation circuit, which outputs a pulse signal composed of an oscillator 72 that outputs a high frequency signal and a 16 Hz reference pulse signal and 1, 2, 4, 8 Hz signals by dividing the high frequency signal. And a frequency divider 74.

Reference numeral 70 denotes a display position control circuit, which connects the data input D to the H level and inputs the signal from the OR gate 68 to the clock input φ, the FF 76, the signal from its output Q and the signal from the OR gate 58 to the OR gate 78. FF80 for inputting the reference pulse signal to the clock input φ through the data input D, the AND gate 82 for inputting the signal from the output Q and the reference pulse signal, and the output signal and the display changing circuit described later. Of the OR gate 84 for inputting the signal A of the above, a 15-ary counter 86 for inputting and counting the signal from the AND gate 82, the carry signal from the output Q and the power-on-clear signal PC are FF8.
OR gate 88 applied to the reset input R of 0, AND signal 90 from which the carry signal and the signal from the output Q of the FF 76 are input, a ternary counter 92 inputting the output signal to the clock input φ, and its output Q Input carry signal and power-on clear signal PC from FF76
OR gate 94 which is applied to the reset input R of.

Reference numeral 96 denotes a second display device, which includes a drive circuit 98, a drive device 100, and a second weather display unit 102.

This drive circuit 98 inputs the signal from the OR gate 84 to the clock input φ and inputs the signal from its output to the data input D to divide the signal in half and outputs the signal from the FF 104 and its output Q. And AND gates 106 and 108 for inputting the signal from the OR gate 84 to the input ends of various places, and an amplifier circuit 11 for amplifying the output signals thereof and applying them to the driving device 100.
0, 112, and the like.

Further, the drive device 100 is configured by a step motor that rotates in one direction in the present embodiment, and is, for example, 60.
It is set to rotate once when a pulse is input.

The second weather display section 102 displays the weather in an analog manner as shown in FIGS. 2 and 3.

114 is an external switch, 116 is a display change circuit,
These constitute an initial setting circuit for setting the initial position of the pointer 17.

The display change circuit 116 is a first display change circuit 118 that outputs a signal for moving the pointer 17 one step immediately when the external switch 114 is turned on, and the external switch 114 is turned on for a predetermined time. And move the pointer 17 moved 1 step further 14 steps to 1/4
The second display changing circuit 120 outputs a signal for rotating the second display changing circuit 120.

That is, the first display changing circuit 118 inputs the BD 122 for inputting the signal from the external switch 114, the output signal thereof, the reference pulse signal and the signal PC to the data input D respectively.
And FF12 input to clock input φ and reset input R
4, and an AND gate 126 and a NOR gate 128 for inputting the signal from the output and the signal from the BD 122 together.
And the output signal of the AND gate 126 is input to the clock input φ and the data input D is connected to the H level.
30, an AND gate 132 for inputting a signal from its output Q and a reference pulse signal, and its output signal to a clock input φ via an inverter 134 and FF1.
FF136 in which the signal from the output of 30 is input to the reset input R and the data input D is connected to H level;
The signal from the output Q and the signal PC are input to the FF130.
Of the OR gate 138 which is applied to the reset input R.

Further, the second display change circuit 120 inputs the signal from the output Q of the FF 124 to the clock input φ and the FF 140 to which the data input D is connected to the H level, the signal from the output Q and the reference pulse signal. And a counter 144 for inputting the output signal of the NOR gate 128 to the reset input R, and a carry signal from the output Q thereof to the clock input φ. FF146 whose data input D is connected to H level, AND gate 148 which inputs the signal from its output Q and reference pulse signal, and its output signal and the output signal from AND gate 132 Pulse signal A for driving 96
Of the OR gate 150 that outputs the OR gate 150, the output signal of the AND gate 148 to the clock input φ via the inverter 152, and the signal from the output of the FF 146 to the reset input R, and the quadrature counter 154 and its output Q. FF146 by inputting carry signal and signal PC
OR gate 15 for applying an output signal to the reset input R of
6 and an OR gate 158 which inputs the output signal thereof and the output signal of the NOR gate 128 and applies the output signal to the reset input R of the FF 140.

Next, the operation of the weather trend device having the above configuration will be described.

First, when the battery is turned on or the power is turned on, a pulse is generated in the signal PC output from the power-on clear circuit 3. With this pulse, FFs 24, 38, 76,
80, 124, 130, 140, 146 are reset to the initial state.

Here, the AND gate 33, the OR gate 41, and the AND gates 37, 39 in the pulse generation circuit 31 generate signals 1P, 3P, which generate 1, 3, 2, 4 pulses having the same pulse width in 1 second, respectively. 2P and 4P are output, and this signal is applied to AND gates 43, 45, 47 and 49.

The AND gates 43, 45, 47, 49 are opened and closed according to the signal indicating the weather information from the weather determination circuit 10, but the contact piece 8 is now in contact with the first contact 4 and the BD 16
When an H-level signal indicating "clear" is output from, only the AND gate 49 for inputting the signal is opened. Therefore, a signal 4P that generates four pulses per second is generated at its output.

Further, the signal 4P is the OR gate 51 and the amplifier 55.
Is applied to the LED 57 via the
Blinks four times per second to indicate that the forecast weather is "clear". This operation is continued until the forecast weather changes and the AND gate 49 is closed.

In this state, the atmospheric pressure drops and the contact piece 8 moves to the first contact 4
The output signal of the BD 16 changes from H level to L level. As a result, the output signal of the inverter 26 that inverts this signal and the FF2 already set
The output signal of the AND gate 30, which receives the signal from the output Q of No. 4, becomes H level, and the state becomes "deteriorated".

Therefore, the AND gate 47 which inputs this signal is opened instead of the AND gate 49, and a signal 2P in which two pulses are generated per second is generated at the output.

This signal 2P is also applied to the LED 57 via the OR gate 51 or the like, whereby the LED 57 blinks twice per second to display "worse".

When the contact piece 8 comes into contact with the second contact 6 and the output signal of the BD 18 becomes H level and the AND gate 43 is opened, the signal 1P generated at the output of the AND gate 43 is applied to the LED 57. Flashes once per second, and "rain"
Is displayed.

Further, the contact piece 8 separates from the second contact 6 and the AND gate 3
When the output signal of 2 becomes H level and the AND gate 45 is opened, the signal 3P generated at the output of the AND gate 45 is applied to the LED 57 and blinks three times per second to indicate "how to recover". indicate. The interval at which the LED 57 blinks can be changed by changing the pulse cycle or pulse width.

As described above, the display of the forecast weather by the first display device 53 is performed immediately after the power is turned on, and when the forecast weather is switched, the forecast weather is immediately switched to the state in which the new forecast weather is displayed. Is.

On the other hand, since the second display device 96 displays the pointer as described above, it is necessary to adjust the position of the pointer 17 shown in FIG. 2 to the predicted weather when the power is turned on.
Therefore, in the present embodiment, the external switch 114 is operated so that the pointer 17 can be moved to a display position that matches the predicted weather displayed by the first display device 53.

That is, when the external switch 114 is turned on, the BD 12
The output signal of 2 becomes H level, and this signal is generated at the output of the AND gate 126 which is already open. At this time, the FF 130 switches the output Q to the H level in synchronization with the rising edge of the signal, and the AND gate 132 is opened by this signal. Therefore, the reference pulse signal is generated at the output of the AND gate 132. Here, the FF 136 switches its output Q to the H level in synchronization with the fall of the pulse generated at the output of the AND gate 132, the FF 130 is reset by this signal, and the AND gate 132 returns to the closed state. As a result,
Only one pulse of the reference pulse signal is generated at the output of the AND gate 132, and this pulse is transmitted through the OR gates 150 and 84 to the FF 104 and the AND gate 1.
It is applied to 06 and 108, and is output as a pulse for driving the driving device 100 by one step from the amplifier circuits 110 and 112. As a result, the pointer 17 shown in FIGS. 2 and 3 is moved by one step.

When the external switch 114 is turned on and the output signal of the BD 122 becomes H level as described above, the output Q of the FF 124 is synchronized with the rising of the reference pulse signal,
Switches to H and L levels, respectively. Therefore, the AND gate 126 is closed, and the external switch 11
It will not be opened until 4 is turned off and the output state of the FF 124 is switched.

Further, when the output Q of the FF 124 becomes H level in this way, the FF 140 switches the output Q to H level in synchronization with its rising. This makes AND gate 1
42 is open and a reference pulse signal is generated at its output. Therefore, the counter 144 starts counting by the reference pulse signal.

Here, the FF 140 is reset by the pulse output from the NOR gate 128 when the external switch 114 is turned off, and switches its output Q to the L level, whereby the AND gate 142 is closed.
Therefore, while the external switch 114 is turned on,
AND gate 142 is kept open and counter 144
Will continue counting.

In this embodiment, the counter 144 outputs a carry signal from its output Q when counting for about 1 second.
The FF 146 switches its output Q to H level and L level respectively in synchronization with the rise of this carry signal, whereby the AND gate 148 is opened, and
The advance counter 154 is released from reset. Therefore, a reference pulse signal is generated at the output of the AND gate 148,
This signal is generated as signal A through OR gate 150.

The 14-ary counter 154 counts the rising edge of the reference pulse signal generated at the output of the AND gate 148, and when 14 pulses are generated, outputs a carry signal from its output Q. This carry signal is OR gate 1
It is applied to FFs 146 and 140 via 56 and 158 to reset them. When the FF 146 is reset, the AND gate 148 is closed and the 14-ary counter 154 is reset. Therefore, the pulse generated at the output of the AND gate 148 is stopped at 14 pulses, and the pointer 17 driven by the signal A generated by this pulse moves by 14 steps and stops.

As a result, the pointer 17 is moved by one step when the external switch 114 is turned on, and when the external switch 114 is further held in the turned-on state, it is moved by another 14 steps, for a total of 15 steps, that is, 1/4. It will rotate. As described above, since the weather display plate 13 in this embodiment is divided into four, the pointer 17 is set to 1/4.
When rotated, the weather display will move to the next weather.

As described above, the initial position can be changed by rotating the pointer 17 step by step or 1/4 rotation according to the operation time of the external switch 114.

When the initial state is set in this way, the pointer 17 is thereafter driven according to the detection signal from the weather determination circuit 10.

For example, when the contact piece 8 is now in contact with the first contact 4 and the pointer 17 shown in FIG. 2 is in the "clear" area 13a,
When the atmospheric pressure decreases and the contact piece 8 separates from the first contact 4, BD
The output signal of 16 changes from H level to L level. As a result, the output signal of the AND gate 30 becomes H level.

This signal is a signal indicating "deterioration" and is applied to the set input S of the FF 38 to set it to "deteriorate".
Is stored, and a pulse is output from the one-shot circuit 50 to instruct to shift from “fine” to “worse”.

This pulse is transmitted from the OR gate 58 to the OR gate 78.
When it is applied to the FF80 via the FF80, the output Q of the FF80 becomes H level and L level, respectively. As a result, the AND gate 82 is opened, and the reference pulse signal is generated at its output. Further, the 15-ary counter 86 is reset and released, and the reference pulse signal from the AND gate 82 is input and counted. At this time, the reference pulse signal from the AND gate 82 is applied to the drive circuit 98 via the OR gate 84, and the drive circuit 98 drives the drive device 100. As a result, the pointer 17 shown in FIG.
Each pulse is moved by 1/60 rotation.

After that, 15 pulses are generated in the signal from the AND gate 82, the pointer 17 is rotated 1/4, and the “deteriorated” area 13
When reaching the center of b, a carry signal is output from the output Q of the 15-ary counter 86. This carry signal is FF8
Applied to the reset input R of 0 to reset it, F
F80 switches its output Q to L and H levels, respectively. As a result, the AND gate 82 is closed, its output signal becomes L level, and the 15-ary counter 86 is reset.

Further, when the pressure is further lowered by a constant value and the contact piece 8 comes into contact with the second contact 6 when the pointer 17 indicates “deterioration”, the H level indicating “rain” output from the BD 18 is generated. Is generated at the output of the AND gate 48 which is in an open state due to a signal from the FF 38 which stores that the current display is "deteriorated". In response to this signal, a pulse is output from the one-shot circuit 56 and applied to the OR gate 78 in the display position control circuit 70 via the OR gate 58.

In this way, the display position control circuit 7 is operated via the OR gate 58.
To apply an H-level signal to the OR gate 78 in 0, there are the cases of changing from "clear" to "deteriorating", "deteriorating" to "rainy", and "rainy" to "good way" as described above. ,
It may change from "free" to "clear". This "rain"
In the case of changing from "to", the contact piece 8 separates from the second contact 6 due to the rise of the atmospheric pressure, whereby the output signal of the FF 24 already reset and the signal from the BD 18 inverted by the inverter 28 are generated. The AND gate 32 outputs an H-level signal indicating "easy", and in response to this signal, a pulse is output from the one-shot circuit 52 and a signal is output via the OR gate 58. In addition, when changing from “free” to “clear”, the atmospheric pressure further rises and the contact piece 8 comes into contact with the first contact 4, which causes the BD 16 to move.
Outputs an H level signal. The output signal of the AND gate 46 becomes H level due to this signal and the signal from the FF 38 which stores the state at this time when the "freedom" is already detected, and in response to this signal, one shot A pulse is output from the circuit 54 and applied to the OR gate 78 in the display position control circuit 70 via the OR gate 58.

As described above, when the signal is output from the OR gate 58, it is necessary to rotate the pointer 17 by 1/4 rotation to shift the display to the predicted weather. In this case, the same operation as described above is performed. 15 pulses are output from the OR gate 84 in the display position control circuit 70, and the pointer 17 becomes 1/4.
Is rotated.

Next, in the case of changing from "worse" to "clear", the contact piece 8 that was in contact with the first contact 4 is once separated due to the decrease of the atmospheric pressure to be in the state of "worse", and then the atmospheric pressure rises again. Then, the first contact 4 is contacted. Therefore, as described above, the FF 38 is set by the signal output from the AND gate 30 when the contact piece 8 separates from the first contact 4, and the AND gate 6 that receives the signal from the output Q thereof is input.
0 is open. Here, when the segment 8 contacts the first contact 4 again, an H-level signal output from the BD 16 is generated at the output of the AND gate 60, and a pulse is output from the one-shot circuit 64 in response to this signal. To be done.

This pulse is applied to the clock input φ of the FF 76 via the OR gate 68, and is synchronized with the rising edge of the clock input φ.
The output Q of 6 becomes H level and L level, respectively. This F
The H level signal from the output Q of the F76 is applied to the data input D of the FF80 via the OR gate 78, whereby the output state of the FF80 is switched, and 15 pulses are output from the OR gate 84 in the same manner as the above-described operation. To be done.

When fifteen pulses are output in this way, a carry signal is output from the 15-ary counter 86, and this signal causes the FF 80 to be reset once, and also via the AND gate 90 which is open at this time. Ternary counter 9
An H level signal is applied to 2 and the count is advanced by 1.

In this state, the output Q of the FF76 is still kept at H and L levels, so that the FF80 outputs the output Q,
To H and L levels, respectively. Therefore, again 15
Pulses are output.

This operation is repeated until the carry signal is output from the ternary counter 92 that counts the carry signal from the 15-ary counter 86. When the carry signal is output from the ternary counter 92, this signal is applied to the reset input R of the FF 76 via the OR gate 94 to reset it. In this way, when the signal from the output Q of the FF76 becomes L level and H level, the L level signal is applied to the data input D of the FF80, and the carry of the third time output from the 15-ary counter 86 is carried out. The output state when it is reset by the signal will be maintained. Therefore, the output Q becomes L and H levels, the AND gate 82 is closed, and the 15-ary counter 86
Becomes a reset state, and the output of the pulse from the OR gate 84 is stopped.

According to this operation, the output of 15 pulses is repeated three times, and as a result, 45 pulses are applied to the drive circuit 98. Therefore, the pointer 17
It will be rotated 3/4 rotation, and the "deteriorated" area 1 shown in Fig. 2
3b passes through the "rain" and "free" areas 13c and 13d and moves to the center of the "clear" area 13a.

On the other hand, when changing from “free” to “rainy”, the contact piece 8 that was in contact with the second contact 6 is once separated and then again contacts the second contact 6, so that the BD 18 outputs at this time. The H-level signal that is generated is generated at the output of the AND gate 62 which is in the open state by the signal from the FF 38 which stores “freedom”. The one-shot circuit 66 outputs a pulse in response to the signal from the AND gate 62, and this pulse is applied to the FF 76 via the OR gate 68.

As a result, 15 pulses are repeated three times and applied from the OR gate 84 to the drive circuit 98 in the same manner as the above-described operation.

As a result, the pointer 17 passes through the "clear" area 13d through the "clear" and "deteriorated" areas 13a and 13b and then "rains".
Stop at the center of region 13c.

In the above-described embodiment, since the step motor rotating in one direction is used, the output signals of the first and second detection circuits 42 and 44 in the display position determination circuit 40 respectively cause 1 /
Although it is instructed to perform 4 rotations and 3/4 rotations, when the reversible step motor is used, the output signals of the first and second detection circuits 42 and 44 are respectively set to, for example, clockwise and counterclockwise directions. Used as a signal to instruct rotation. Then, in response to this signal, the display position control circuit 70 and the drive circuit 98 may be configured so as to control the reversible step motor in the forward / reverse direction by 1/4 rotation.

FIG. 4 is a circuit diagram showing another embodiment of the pulse generating circuit 31 shown in FIG.

This pulse generation circuit 31 has a counter 160 for inputting a 16 Hz reference pulse signal to a clock input φ and a FF 162 for inputting a carry signal from its output Q to the clock input φ and a data input D connected to an H level.
AND gate 164 for inputting the signal from its output Q and the reference pulse signal, and its output signal for clock input C
Johnson counter 166 input to P and its output Q
OR gate 168 for inputting signals from ₁ , Q ₃ , Q ₅ , Q ₇ and applying to the first display device 53, and signals from outputs Q ₂ , Q ₄ , Q ₆ , Q _{8 of} Johnson counter 166. AND gates 170 to 1 each of which inputs to one input terminal and signals from the weather determination circuit 10 indicating "rain", "worse", "pleasant", and "clear" respectively.
76 and Johnson counter 1 by inputting its output signal
An OR gate 178 applied to the reset input R of 66,
The signal from the output Q of the FF 162 is input to the clock input φ, the data input D is connected to the H level, and the signal from the output Q is applied to the reset input R of the counter 160, and the signal from the OR gate 178 and power-on. An OR gate 182 that applies a clear signal PC to the reset inputs R of the FFs 162 and 180, respectively.

The counter 160 in the pulse generation circuit 31 is reset and released when the FF 180 is reset by the power-on-clear signal PC and starts operating. The counter 160 is set to output a carry signal from its output Q when counting from 1 second to several seconds, and when the carry signal is output, the FF is synchronized with its rising edge.
The output Q of 162 becomes H level.

As a result, the AND gate 164 is brought into the open state, the reference pulse signal is generated at its output, and the Johnson counter 1
Reference numeral 66 sequentially makes its output H level in synchronization with the reference pulse signal.

In this state, a pulse is generated at the output of the OR gate 168 when the outputs Q ₁ , Q ₃ , Q ₅ and Q ₇ of the Johnson counter 166 become H level. Therefore, a maximum of four pulses will be applied to the first display device 53, and the LED 57 will blink 1 to 4 times according to the number of pulses.

On the other hand, the outputs Q ₂ , Q ₄ , Q of the Johnson counter 166
AND gate 170 to 176 to enter the _{6, Q 8} is opened and closed in response to a signal from the weather decision circuit 10, now "rain"
When the signal indicating is is at the H level, only the AND gate 170 is in the open state. Therefore, when the output Q ₂ becomes H level, this signal is generated at the output of the AND gate 170, and the reset input R of the Johnson counter 166 and the FFs 162 and 180 is supplied via the OR gates 178 and 182.
Applied to reset them.

The FF 180 sets the output Q to the H level in synchronization with the rising of the output Q of the FF 162 and holds the counter 160 in the reset state. Therefore, when the FF 180 is reset, the counter 160 starts counting again.

When the FF 162 is reset, the AND gate 16
4 is closed, and application of the reference pulse signal to the Johnson counter 166 is stopped.

Then, when the carry signal is output again from the counter 160, the Johnson counter 16 outputs the same operation as described above.
6 starts counting.

As a result, only the signal from the output Q ₁ of the Johnson counter 166 is output to the counter 16 at the output of the OR gate 168.
0 will be generated at the counting interval, and LED5
7 repeats blinking once at a predetermined interval.

Similarly, the Johnson counter 166 at the same time when a signal indicating the "deterioration" is the output Q ₄ is at the H level to the H level from the weather determining circuit 10 since the reset, the two pulses are outputted from the OR gate 168, The LED 57 repeats blinking twice at predetermined intervals.

Further, even when the signals indicating "clear" and "clear" are at the H level, the OR gate 168 performs the same operation.
3 and 4 pulses are respectively output from the LED and the LED 57 blinks.

It should be noted that the pulse generation circuit 31 can be implemented by using a microcomputer that performs the same operation.

(Effect of the Invention) According to the present invention, since a plurality of weathers can be displayed on a single display unit, the display unit can be downsized and the cost can be reduced.

Further, since the display unit can be downsized, it can be easily incorporated in other devices, and the product can be made into a composite.

Further, as shown in the embodiment, by combining with the second display device that displays the predicted weather, the second display device can be used as a reference display for adjusting to an appropriate state.

[Brief description of drawings]

FIG. 1 is a diagram showing a circuit configuration of a weather trend device according to an embodiment of the present invention, FIG. 2 is an external view of the weather trend device shown in FIG. 1, and FIG. 3 is a weather trend device shown in FIG. FIG. 4 is a circuit diagram showing another embodiment of the pulse generating circuit shown in FIG. 31 ... Pulse generating circuit, 53 ... First display device, 69 ... Reference signal generating circuit.

Claims (1)

[Scope of utility model registration request] 1. A reference signal generating circuit which outputs a pulse signal of a predetermined cycle, and a weather judging circuit which detects a rise and fall of a change in atmospheric pressure within a constant value width and a changing direction thereof and outputs corresponding weather information. A pulse generation circuit for inputting a pulse signal from the reference signal generation circuit and weather information from the weather determination circuit, and outputting the pulse signal with a different number of pulses within a predetermined time period according to the weather information; A weather trend device comprising: a display device which blinks in response to an output from the device.