JPH0843561A - Anemoscope/anemometer - Google Patents

Abstract

PURPOSE:To provide an anemoscope/anemometer by which the direction and velocity of wind can be measured with good accuracy. CONSTITUTION:An electronic wristwatch 1 is provided with a wind-velocity detection sensor 7 and a direction sensor 21, and the wind-velocity detection sensor 7 is covered with a window key having a plurality of holes used to introduce wind. When the window key is pressed to close the holes, a CPU 25 drives the wind-velocity detection sensor 7 to start the detection of a wind- velocity, it takes into a detected wind-velocity detection signal via an amplifier 22 and an A/D converter 23, and stores it in a RAM 24 as a criterion value in a zero reset operation. After that, when a finger is released from the window key, the wind-velocity detection signal from the wind-velocity detection sensor 7 is supplied to a wind-direction and -velocity arithmetic part 27, and the wind- velocity is computed, and stored in the RAM 24. When a maximum wind- velocity is detected, the direction at this time is detected by the direction sensor 21, and the wind direction is computed by the wind-direction and - velocity arithmetic part 27. The wind velocity and the wind direction which have been computed are displayed on a display part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind direction and anemometer.

[0002]

2. Description of the Related Art Conventionally, a so-called propeller type anemometer is generally used as an anemometer, and this propeller type anemometer utilizes the fact that the rotation speed of a propeller changes according to the wind speed.

That is, the conventional anemometer has a propeller,
A conversion unit that converts the rotation of the propeller into an electric signal having a magnitude corresponding to the rotation speed of the propeller and an output unit that displays or records and outputs the conversion result of the conversion unit are provided.

Therefore, when the propeller rotates according to the strength of the wind speed, the conversion unit converts it into an electric signal such as voltage or current having a magnitude corresponding to the rotation speed of the propeller, and the output unit displays it as the wind speed. Record and output.

[0005]

However, since such a conventional anemometer is of the propeller type, its shape and mechanism are large, heavy and unportable, and at the same time, it is an electronic wristwatch. However, there is a problem that it is difficult to incorporate it in a small electronic device such as.

Further, the conventional anemometer has a problem that the wind direction cannot be detected at the same time.

Therefore, the present invention has been made in view of the above circumstances, and an object thereof is to provide a small wind direction and anemometer capable of accurately measuring the wind direction and the wind speed simultaneously.

[0008]

The wind direction and anemometer of the invention according to claim 1 is a wind speed detection sensor for outputting a wind speed detection signal corresponding to a wind speed, and a direction detection for detecting a direction and outputting a direction detection signal. A sensor and a control unit that calculates a wind speed based on a wind speed detection signal output from the wind speed detection sensor, and a wind direction based on a direction detection signal from the direction detection sensor when the wind speed is detected, and the control unit. And the output means for outputting the wind speed and the wind direction.

According to a second aspect of the present invention, there is provided an anemometer / anemometer which outputs a wind speed detection signal corresponding to a wind speed, an azimuth detection sensor which detects an azimuth and outputs an azimuth detection signal. The wind speed detection sensor is provided with a cover that covers the detection surface of the wind speed detection sensor and is provided with an introduction hole for introducing air into the detection surface, and is turned on when the cover is pushed in a state of closing the introduction hole. And a switch for starting the operation, the reference value is a wind speed detection signal from the wind speed detection sensor when the switch is turned on in a state where the introduction hole of the cover is closed, and then the introduction hole of the cover is Control for calculating the wind speed from the wind speed detection signal of the wind speed detection sensor when opened, and for calculating the wind direction from the azimuth detection signal from the azimuth detection sensor when the wind speed is detected By providing a stepped, and an output means for outputting a wind speed and direction output to said control means,
It has achieved the above objectives.

In each of the above cases, as described in claim 3, when the wind speed calculated based on the wind speed detection signal from the wind speed detection sensor indicates the maximum wind speed, the control means detects the direction. The wind direction may be calculated based on the azimuth detection signal output from the sensor.

[0011]

According to the wind direction and anemometer of claim 1, the wind speed detection sensor, for example, the wind speed detection sensor using an absolute pressure sensor, outputs the wind speed detection signal corresponding to the wind speed, and the direction detection sensor, For example, an azimuth detection sensor that detects geomagnetism detects the azimuth and outputs an azimuth detection signal.

Then, the control means calculates the wind speed based on the wind speed detection signal output from the wind speed detection sensor, and also calculates the wind direction from the direction detection signal from the direction detection sensor when the wind speed is detected. The wind speed and the wind direction output by the control means are output by the output means.

Therefore, the wind speed and the wind direction at that time can be accurately detected, and the wind direction and anemometer can be downsized.

According to the wind direction and anemometer of the second aspect of the invention, the wind speed detection sensor outputs a wind speed detection signal corresponding to the wind speed, and the azimuth detection sensor detects the azimuth and outputs the azimuth detection signal. Output.

When a switch provided with a cover which covers the detection surface of the wind speed detection sensor and which has an introduction hole for introducing air into the detection surface is pressed in a state where the cover closes the introduction hole, When turned on, at least the wind speed detection sensor starts to operate, and the control means sets the wind speed detection signal from the wind speed detection sensor when it is turned on in this state as a reference value, and then the introduction hole of the switch cover is opened. The wind speed is calculated from the wind speed detection signal of the wind speed detection sensor when the wind speed is detected, and the wind direction is calculated from the direction detection signal from the direction detection sensor when the wind speed is detected. Then, the wind speed and the wind direction output by the control means are output by the output means.

Therefore, the wind speed can be calculated from the detection result of the subsequent wind speed detection sensor by offsetting the wind speed detection sensor in a state where the wind is not applied and using the wind speed detection signal at that time as a reference value. The wind speed can be accurately detected, and the wind direction and anemometer can be downsized.

In these cases, the control means, for example, when the wind speed calculated based on the wind speed detection signal from the wind speed detection sensor indicates the maximum wind speed, as described in claim 3,
If the wind direction is calculated based on the direction detection signal output by the direction detection sensor, the wind direction at the maximum wind speed can be detected.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. 1 to 7 are views showing an embodiment of the wind direction and anemometer of the present invention, and this embodiment is applied to an electronic wrist watch. First, the configuration of this embodiment will be described. FIG.
FIG. 1 is a front view of the electronic wristwatch 1. The electronic wristwatch 1 is provided with a display unit (output means) 3 on the surface of a body case 2.

The display unit 3 is, for example, an LCD (Liquid Cry).
stal display), and displays the display content corresponding to the mode of the electronic wristwatch 1, as described later. For example, the display unit 3 displays the date / time, hour / minute / second, calendar information and the like in the clock mode, and displays the wind direction, average wind speed, maximum instantaneous wind speed, etc. in both analog and digital in the wind direction / wind speed measurement mode. To do. In addition, in FIG.
The display state of the display unit 3 in the wind direction / wind speed measurement mode is shown.

Various switches 4 are provided on the side surface of the body case 2.
a to 4d are provided, and in particular, the switch 4b is a mode changeover switch for changing over various sub modes in a clock mode such as a time alarm mode, a countdown mode and a stopwatch mode.

Further, in the upper part of the body case 2 in the 12 direction,
A window key 5 is provided, and 6 of the main body case 2 is provided.
A continuation key 6 is provided at the lower part in the time direction. The window key 5 is a cross-sectional view thereof in the 12: 00-6: 00 direction.
As shown in FIG. 5, the switch mechanism portion 5a is formed in a plate shape, one end portion of which is rotatably attached to the main body case 2, and the other end portion is provided with a switch mechanism portion 5a having a pair of contact points (not shown). ing. When the window key 5 is pressed, the other end of the window key 5 is pressed against the switch mechanism section 5a.
By being pressed by the other end of the pair, the pair of contacts come into contact and turn on.

A lead terminal 5b is connected to the switch mechanism section 5a, and the lead terminal 5b outputs the ON signal to a CPU 25 (see FIG. 4), which will be described later, on a circuit board in the electronic wristwatch 1. .

As shown in FIG. 2 and FIG. 3 which is a sectional view of the window key 5 in the 9 o'clock to 3 o'clock direction, a plurality of holes 5c are formed in the lower portion of the window key 5. A wind speed detection sensor 7 is arranged so as to sandwich the body case 2. A plurality of holes 2a are formed in the main body case 2 between the window key 5 and the wind speed detection sensor 7 at positions corresponding to the holes 5c formed in the window key 5. Wind is introduced into the wind speed detection sensor 7 through the hole 5c and the hole 2a of the main body case 2.

Therefore, in the wind speed detecting sensor 7, the wind is introduced to the detection surface only through the hole 5c of the window key 5 and the hole 2a of the main body case 2, and the other peripheral portions are closed.

As the wind speed detection sensor 7, for example, an absolute pressure sensor is used, and when a reference voltage is supplied, it outputs a voltage corresponding to the wind speed (wind pressure) as a wind speed detection signal. The wind speed detection sensor 7 is attached to the holding plate 8, and the holding plate 8 is a lead frame for supplying a reference voltage to the wind speed detection sensor 7 and outputting the wind speed detection signal detected by the wind speed detection sensor 7. 9 is attached. The lead frame 9 and the wind speed detection sensor 7 are
It is connected by a lead wire 10.

The holding plate 8 is held by a holding member 12 via a contact member 11, and the holding member 12 is fixed to the main body case 2 by screws 13. And
The window key 5 supplies a reference voltage to the wind speed detection sensor 7 to start driving the wind speed detection sensor 7,
This is a key for starting measurement of the wind speed by the wind speed detection sensor 7.

The continuation key 6 is a key for instructing to continue the measurement of the wind speed by the wind speed detection sensor 7. Again, in FIG. 1, bands 14 are attached to the upper and lower sides of the body case 2 of the electronic wristwatch 1.

The electronic wristwatch 1 has a circuit configuration as shown in FIG. 4, and includes a control circuit 20, the wind speed detection sensor 7, the direction sensor 21, an amplifier 22, and an A / D converter 2.
3, a RAM 24, the display unit 3 and the like. The control circuit 20 includes a CPU (Central Processing Unit) 2
5, a control unit 26, a wind direction / wind speed calculation unit 27, and the like, and a timer unit (not shown) including an oscillator and a frequency dividing circuit.

This clock section generates a clock signal of a constant cycle by an oscillator and divides it by a frequency dividing circuit to generate a clock signal necessary for clock mode processing, or for wind direction / wind speed measurement mode processing. A timing signal is generated and output to the CPU 25.

The azimuth sensor 21 detects the azimuth of the geomagnetism. For example, a coil is used to detect the magnitude of the geomagnetism acting on the coil according to the orientation of the coil. The azimuth sensor 21 outputs the detection result to the amplifier 22 as an azimuth signal. The amplifier 22 amplifies the analog azimuth signal input from the azimuth sensor 21 and outputs it to the A / D converter 23.

The A / D converter 23 converts the analog azimuth signal input from the amplifier 22 into a digital signal (A / D).
Conversion) and output to the CPU 25. The CPU 25 is a ROM (Read) that stores system data, a program for the electronic wristwatch 1, and a program for the wind direction and anemometer.
Only Memory) is built in, and the clock mode processing described later is performed according to the program in the ROM to display calendar information or clock data such as hour / minute / second on the display unit 3,
The amplifier 22 and the A / D converter 23 are driven via the control unit 26 to drive the wind speed detection sensor 7 and the direction sensor 21.
The wind speed detection signal and the direction signal are acquired from the
The information in 24 is read, and the wind direction / wind speed calculation unit 27 calculates the wind speed and the wind direction, and the wind direction / wind speed measurement mode process of displaying the calculated wind speed and wind direction on the display unit 3 is performed.

As described above, the wind speed detection sensor 7 outputs the detection voltage corresponding to the wind pressure to the amplifier 22 as a wind speed detection signal, and the amplifier 22 amplifies the analog wind speed detection signal input from the wind speed detection sensor 7. Then, the A / D converter 2
Output to 3.

The A / D converter 23 digitally converts the wind speed detection signal input from the amplifier 22, and the CPU 25
Output to. The RAM 24 is a display data area for storing display data to be displayed on the display unit 3, a timing data area for storing timing data measured by the timing section, a wind pressure storage area for storing measured wind pressure, and a wind pressure (wind speed) at zero reset. Is stored as a reference value, an initial value storage area for storing an initial value of the wind pressure (wind speed), a wind speed storage area for storing a plurality of wind speed values calculated from the wind pressure, and a maximum maximum wind speed. It has various storage areas such as an instantaneous wind speed storage area, a wind direction storage area for storing the wind direction at the maximum instantaneous wind speed, a flag area for storing the switch states of the switches 4a to 4d, the window key 5 and the continuation key 6 as flags. .

In the RAM 24, the CPU 25 writes / erases the various data, and the various data stored in the RAM 24 is read by the CPU 25 to be used in the clock mode process and the wind direction / wind speed measurement mode. Used for processing.

In particular, the CPU 25 controls the wind direction / wind speed calculation unit 2
The maximum value of the calculated wind speed of 7 is detected, and the wind direction / wind speed calculation unit 27 is caused to calculate the wind direction at the maximum instantaneous wind speed. further,
The CPU 25 writes display data corresponding to the clock mode and the wind direction / wind speed measurement mode in the display data area of the RAM 24, and writes the written display data in the RAM.
It is read from 24 and displayed on the display unit 3.

The CPU 25 carries out a timekeeping process for timekeeping of hours, minutes and seconds based on the timekeeping signal input from the timekeeping section, and a wind direction based on a timing signal input from the timekeeping section. And the wind direction and wind speed measurement processing is performed to measure the wind speed.

The control unit 26 controls the operation of the amplifier 22 and the A / D converter 23 according to the instruction from the CPU 25, and controls the operation of detecting the wind speed and the direction (wind direction).

The wind direction / wind speed calculation unit 27 determines the wind direction, wind speed, average wind speed, etc. from the wind speed detection signal from the wind speed detection sensor 7 and the direction signal from the direction sensor 21 given from the CPU 25, and the wind pressure data stored in the RAM 24. And outputs the calculated wind direction and wind speed to the CPU 25.
The calculation method of the wind direction and the wind speed that can be placed in the wind direction / wind speed calculation unit 27 is not limited, and the calculation is performed by a known calculation method.

Next, the operation of this embodiment will be described. As described above, the electronic wristwatch 1 of this embodiment has the wind speed detecting sensor 7
The azimuth sensor 21 is incorporated, and the function as a timepiece and the function as a wind direction and anemometer are provided.

That is, the electronic wristwatch 1 is normally set to the clock mode (time measuring mode), and is set to each submode such as the time alarm mode, the countdown mode and the stopwatch mode by operating the switches 4a to 4d. By pressing the window key 5, the wind direction / wind speed measurement mode can be set.

In the timepiece mode, the electronic wristwatch 1 performs timekeeping processing using the timekeeping data area of the RAM 24 based on the timekeeping signal input from the timekeeping section, and temporarily stores the timekeeping processed data in the display data area of the RAM 24. After the storage, the clock mode processing for displaying and outputting the timekeeping information such as hour, minute and second and the calendar information such as date, etc. on the display unit 3 is performed.

In this time measuring mode (clock mode), when the window key 5 is pressed, the electronic wristwatch 1 is
As shown in FIG. 5, the time measurement mode (step S1) is set to the wind direction / wind speed measurement (wind direction / wind speed measurement) mode (step S2). At this time, the user of the electronic wristwatch 1 uses the window key 5 The window key 5 is pressed so as to close the hole 5c formed in the.

In this way, when the window key 5 is pushed with its hole 5c closed, as shown in FIGS. 2 and 3, the wind speed detecting sensor 7 detects the outside wind. Introduced to the surface can be blocked and a calm or zero reset condition is formed.

When the window key 5 is turned on as described above, the CPU 25 supplies a reference voltage for driving to the wind speed detection sensor 7 in this state to operate the wind speed detection sensor 7 and control it. The section 26 is controlled to drive the amplifier 22 and the A / D converter 23.

The wind speed detection signal detected by the wind speed detection sensor 7 is amplified by the amplifier 22, A / D converted by the A / D converter 23, and input to the CPU 25, where CP is supplied.
The U25 stores the value of the input wind speed detection signal in the RAM 24 as a reference value (step S3).

When the storage of the reference value in the RAM 24 is completed, the CPU 25 sounds an alarm sound for about 0.3 seconds to notify that the preparation for the wind speed measurement is completed. When the alarm sound is emitted, the user of the electronic wristwatch 1 releases his / her finger from the window key 5 and moves the arm wearing the electronic wristwatch 1 so that the wind key 5 part, that is, the wind speed detection sensor 7 is exposed to wind. Vertically hit (step S
4).

In this state, the CPU 25 performs the wind velocity measurement process again for a predetermined time, for example, 3 seconds (step S
5) After a lapse of a predetermined time, supply of the reference voltage to the wind speed detection sensor 7 is stopped, and the control unit 26 is controlled to stop the operation of the amplifier 22 and the A / D converter 23 to measure the wind speed. Stop processing.

Then, the CPU 24 subtracts the wind speed detection signal input in the current measurement processing from the reference value stored in the RAM 24, corrects the reference value, and then outputs it to the wind direction / wind speed calculation unit 27. The wind direction / wind speed calculation unit 27 calculates the wind speed. The wind direction / wind speed calculation unit 27 calculates the wind speed based on the wind speed detection signal input from the CPU 25, and outputs the calculated wind speed value to the CPU 25.

The CPU 25 stores the wind speed value input from the wind direction / wind speed calculating unit 27 in the RAM 24 as the initial value of the wind speed (step S6). As described above, in the electronic wristwatch 1, the operation of the wind speed detection sensor 7 is started in a state where the hole 5c of the window key 5 is covered with the finger, and the wind speed detection signal of the wind speed detection sensor 7 at that time is used as a reference value to Since the reference value is used to correct the wind speed detection signal detected by the wind speed detection sensor 7 when the finger is removed from the hole 5c, zero correction of the wind speed detection sensor 7 should be performed every time the wind speed is measured. The wind speed can be measured accurately.

Further, the window key 5 can be provided with the hole 5c and the window key 5 can be turned on in a state where the hole 5c is closed, and the zero reset operation and the switching operation of the wind speed detection sensor 7 can be performed at the same time. as a result,
The operability of the electronic wristwatch 1 can be improved.

Next, the CPU 25 checks whether or not the wind speed measurement is continued (step S7). To determine whether or not to continue the wind speed measurement, for example, the flag area of the RAM 24 is checked, and whether a flag indicating that the measurement is continued is set,
That is, it is performed by checking whether or not the flag indicating continuation of measurement is "1" (indicating continuation when the flag is "1"). This flag is set to "1" when the continuation key 6 is pressed. Set, mode switch 4a
It is canceled by inputting ~ 4d.

Therefore, when the user of the electronic wristwatch 1 continues to measure the wind speed, he or she pushes the continuation key 6 to
The direction of the electronic wristwatch 1, that is, the direction of the wind speed detection sensor 7 is changed, and the measurement of the wind speed is continued.

Then, in step S7, if the measurement is continued, the CPU 25 supplies the reference voltage to the wind speed detection sensor 7 and drives the amplifier 22 and the A / D converter 23 so that the wind speed detected by the wind speed detection sensor 7 is measured. The measurement is performed for a predetermined period, for example, for 10 seconds (step S8), and the wind speed detection signal input from the wind speed detection sensor 7 during that period is output to the wind direction / wind speed calculation unit 27 to calculate the wind speed, and the calculated wind speed is calculated. The value is compared with the wind speed value previously measured and stored in the RAM 24 to check whether it is the maximum value (step S9).

When the measured wind speed is not the maximum value in step S9, the process returns to step S7 to check whether or not the measurement is continued (step S7).
Similarly, the wind speed is measured for 10 seconds (step S
8) It is checked whether it is the maximum value (step S9).

In step S9, when the wind speed measured this time is the maximum value, the measured wind speed value is once stored in the display data area of the RAM 24, and then displayed on the display unit 3 and is also displayed in the RAM 24. Is written as the maximum value (step S10).

Next, automatic azimuth measurement is performed (step S1).
1). In this automatic azimuth measurement, a driving current is supplied to the azimuth sensor 21 to cause the azimuth sensor 21 to detect the direction of the geomagnetism, that is, the azimuth, and the azimuth signal detected by the azimuth sensor 21 is supplied to the amplifier 22 and the A / D converter 23. Via CPU2
Enter in 5. Then, the CPU 25 outputs the input azimuth signal to the wind direction / wind speed calculation unit 27 and causes the wind direction / wind speed calculation unit 27 to calculate the wind direction.

The wind direction / wind speed calculation unit 27 outputs the calculated wind direction value to the CPU 25, and the CPU 25 temporarily stores the wind direction value input from the wind direction / wind speed calculation unit 27 in the display data area of the RAM 24, and then the display unit. 3 is displayed and output and stored in the wind direction storage area of the RAM 24 (step S12). Next, the wind direction, initial wind speed and average wind speed are RA
Calculated from the data stored in M24, the display unit 3
Is displayed and output (step S13).

Therefore, the display unit 3 displays, for example, in FIG.
, The wind direction at maximum wind speed, NNW in FIG.
(North-northwest) is displayed in analog, and the wind speed (maximum instantaneous wind speed), which is 8.2 m / s in FIG. 6, is digitally displayed. Also, the initial wind speed (the initial wind speed measured in step S5 and stored in the RAM 24 in step S6)
7 is displayed as 5.0 m / s in FIG. 7, and the average wind speed is displayed as 7.5 m / s in FIG. 7 as shown in FIG. 7.

When the wind direction and the wind speed are displayed in this way,
After the wind direction / speed measurement is completed (step S14), the time alarm mode (step S15), the countdown mode (step S16), and the stopwatch mode (step S17) are returned to step S1 to measure the time. Switch to mode.

In the wind direction / wind speed measurement mode, if the continuation key 6 is not pressed in step S7 and the measurement is not continued, the process directly proceeds to step S13 to measure the wind direction / initial wind speed and the average measured up to that time. The wind speed is displayed and output to the display unit 3 (step S13), the wind direction / wind speed measurement process is completed (step S14), and after various modes have passed (step S15 to step S17), the process returns to step S1.

If the window key 5 is turned on and the initial wind speed is measured and then the continuation key 6 is not turned on, only the initial wind speed is measured, and only the initial wind speed is measured in step S1.
3 is displayed on the display unit 3.

As described above, according to this embodiment, the wind speed detection sensor 7 outputs the wind speed detection signal corresponding to the wind speed, and the azimuth sensor 21 detects the azimuth and outputs the azimuth signal. Then, the wind direction / wind speed calculation unit 27 of the control circuit 20 as the control unit calculates the wind speed based on the wind speed detection signal output from the wind speed detection sensor 7, and the direction from the direction sensor 21 when the wind speed is detected. The wind direction is calculated from the signal, and the calculated wind speed and wind direction are displayed and output to the display unit 3 which is an output unit.

Therefore, the wind speed and the wind direction at that time can be accurately detected, and the wind direction and anemometer, and consequently the electronic wristwatch 1 to which the wind direction and anemometer is applied, can be downsized.

Further, according to the present embodiment, the window key 5 which covers the detection surface of the wind speed detection sensor 7 and has the hole 5c for introducing the wind into the detection surface is pressed in a state of closing the hole 5c. When it is turned on, the wind speed detection sensor 7 starts to operate. In this state, the wind speed detection signal from the wind speed detection sensor 7 is used as a reference value, and then the hole 5c of the window key 5 is opened. Since the wind speed is calculated from the wind speed detection signal of the wind speed detection sensor 7 when the wind speed is detected, and the wind direction is calculated from the direction signal from the direction sensor 21 when the wind speed is detected, the wind speed detection sensor 7 is not exposed to wind. The offset is taken in the state, and the wind speed detection signal at that time is used as a reference value, and the wind speed detection sensor 7
The wind speed can be calculated from the detection result, and the wind direction and the wind speed can be accurately detected, and the wind direction and anemometer can be downsized.

Further, in the present embodiment, when the wind speed calculated based on the wind speed detection signal from the wind speed detection sensor 7 indicates the maximum wind speed, the wind direction is calculated based on the azimuth signal output from the azimuth sensor 21. Therefore, the wind direction at the maximum wind speed can be appropriately detected.

Although the invention made by the present inventor has been specifically described based on the preferred embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say.

For example, in the above embodiment, the wind speed detection sensor 5 is attached to the upper part of the electronic wristwatch 1 at 12:00.
A dedicated continuation key 6 for instructing continuation of the wind speed measurement is provided, but the present invention is not limited to this. For example, as shown in FIG. 30 original switches 4a-4
The function as the continuation key 6 may be added to one of d, for example, the switch 4c.

Further, in each of the above-mentioned embodiments, the case where the invention is applied to the electronic wrist watch has been described, but it goes without saying that the wind direction and anemometer are not limited to those applied to the electronic wrist watch, and for example, the wind direction and anemometer alone. You may comprise.

[0069]

According to the wind direction and anemometer of claim 1,
The wind speed detection sensor outputs a wind speed detection signal corresponding to the wind speed, and the azimuth detection sensor detects the azimuth and outputs the azimuth detection signal. Then, the control means calculates the wind speed based on the wind speed detection signal output from the wind speed detection sensor, and calculates the wind direction from the azimuth detection signal from the azimuth detection sensor when the wind speed is detected. The output means outputs the output wind speed and wind direction.

Therefore, the wind speed and the wind direction at that time can be accurately detected, and the wind direction and anemometer can be downsized.

According to the wind direction and anemometer of the second aspect of the invention, the wind speed detection sensor outputs the wind speed detection signal corresponding to the wind speed, and the azimuth detection sensor detects the azimuth and outputs the azimuth detection signal. Output. A switch, which covers the detection surface of the wind speed detection sensor and is provided with a cover having an introduction hole for introducing air into the detection surface, is turned on when the cover is pressed in a state of closing the introduction hole. At least when the wind speed detection sensor starts operating, the control means uses the wind speed detection signal from the wind speed detection sensor when turned on in this state as a reference value, and then when the introduction hole of the switch cover is opened. The wind speed is calculated from the wind speed detection signal of the wind speed detection sensor, and the wind direction is calculated from the direction detection signal from the direction detection sensor when the wind speed is detected. Then, the wind speed and the wind direction output by the control means are output by the output means.

Therefore, the wind speed can be calculated from the subsequent detection result of the wind speed detection sensor by offsetting the wind speed detection sensor in a state where the wind is not applied and using the wind speed detection signal at that time as a reference value. The wind speed can be accurately detected, and the wind direction and anemometer can be downsized.

In these cases, when the wind speed calculated based on the wind speed detection signal from the wind speed detection sensor indicates the maximum wind speed, the control means outputs the azimuth detection output from the azimuth detection sensor. If the wind direction is calculated based on the signal, the wind direction at the maximum wind speed can be detected.

[Brief description of drawings]

FIG. 1 is a front view of an electronic wrist watch to which an embodiment of the wind direction and anemometer of the present invention is applied.

2 is a sectional view of the electronic wristwatch shown in FIG.

3 is a sectional view of the electronic wristwatch shown in FIG.

FIG. 4 is a circuit block diagram of the electronic wristwatch shown in FIG.

5 is a flowchart showing a wind direction / wind speed measurement process by the electronic wristwatch shown in FIG.

FIG. 6 is a diagram showing a state in which the maximum wind speed and the wind direction at that time are displayed on the display unit of FIG. 1;

FIG. 7 is a diagram showing a state in which an initial wind speed and an average wind speed are displayed in analog and digital on the display unit of FIG. 1.

FIG. 8 is a front view of another electronic wrist watch to which the wind direction and anemometer of the present invention is applied.

[Explanation of symbols]

 1 Electronic Wrist Watch 2 Body Case 2c Hole 3 Display 4a-4d Switch 5 Window Key 5a Switch Mechanism 5b Lead Terminal 5c Hole 6 Continuation Key 7 Wind Speed Sensor 8 Holding Plate 9 Leadframe 10 Lead Wire 14 Band 20 Control Circuit 21 Direction Sensor 22 Amplifier 23 A / D converter 24 RAM 25 CPU 26 Control unit 27 Wind direction / wind speed calculation unit

Claims (3)

[Claims] 1. A wind speed detection sensor for outputting a wind speed detection signal corresponding to a wind speed, a direction detection sensor for detecting a direction and outputting a direction detection signal, and a wind speed based on the wind speed detection signal output by the wind speed detection sensor. And a control means for calculating the wind direction by the azimuth detection signal from the azimuth detection sensor when the wind speed is detected, and an output means for outputting the wind speed and the wind direction output by the control means. A wind direction and anemometer characterized by. 2. A wind speed detection sensor which outputs a wind speed detection signal corresponding to a wind speed, an azimuth detection sensor which detects a azimuth and outputs a azimuth detection signal, and a detection surface of the wind speed detection sensor which covers and covers the detection surface. Equipped with a cover with an introduction hole for introducing wind into
A switch that is turned on when the cover is pushed in a state where the introduction hole is blocked, and a switch that is turned on when the switch is turned on in a state where the introduction hole of the cover is closed. With the wind speed detection signal from the wind speed detection sensor as a reference value, the wind speed is calculated from the wind speed detection signal of the wind speed detection sensor when the introduction hole of the cover is subsequently opened, and the wind speed is detected when the wind speed is detected. A wind direction and anemometer, comprising: a control unit that calculates a wind direction based on a direction detection signal from a direction detection sensor; and an output unit that outputs the wind speed and the wind direction output by the control unit. 3. The control means calculates the wind direction based on the azimuth detection signal output from the azimuth detection sensor when the wind speed calculated based on the wind speed detection signal from the wind speed detection sensor indicates the maximum wind speed. The wind direction and anemometer according to claim 1 or 2.