JPH0733142Y2 - Atmospheric pressure determination device and weather prediction device using the device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an atmospheric pressure level determining device used as a weather forecasting method and a weather forecasting device using the device.

[0002]

2. Description of the Related Art The weather is good if a high pressure covers a certain area, and the weather worsens if a low pressure approaches. Therefore, there is a high / low pressure determination device for simply predicting the weather at a certain point. FIG. 2 is a block diagram showing the structure of a conventional atmospheric pressure height determination device. In FIG. 2, reference numeral 1 is an atmospheric pressure measuring unit that measures atmospheric pressure, 2 is an atmospheric pressure storage unit that stores the measured atmospheric pressure value measured by the atmospheric pressure measuring unit 1, and 3 is a high atmospheric pressure or a low atmospheric pressure, and the atmospheric pressure fluctuation state Is a weather determination unit that predicts atmospheric pressure and weather from now on.

Here, the high pressure and the low pressure are phenomena in which the relative atmospheric pressure is high or low as to whether the atmospheric pressure in the area is higher or lower than the ambient pressure. In other words, when a certain point is targeted, it can be said that the present atmospheric pressure is higher or lower than the average atmospheric pressure at that point.

The actual weather is determined not only by the high and low of this atmospheric pressure but also by many other factors, and there are many weather forecasting devices that forecast the weather by using some methods together. Low pressure is still an important factor in weather forecasting.

[0005]

FIG. 3 is a diagram showing an example of a method for judging the weather based on whether the atmospheric pressure is high or low. In FIG. 3, as an example of weather determination, a standard atmospheric pressure of 1013 mbar is used as a reference value to determine whether the atmospheric pressure is high or low, and a high atmospheric pressure range (T1) is clear, and a low atmospheric pressure range (T1).
An example is shown in which the case 3) is divided into rain and the case in the middle pressure range (T2) is divided into cloudy.

However, since the absolute value of the atmospheric pressure differs depending on the altitude (altitude above sea level) of the measuring point for measuring the atmospheric pressure, in order to determine the level of the atmospheric pressure from the measured value of the atmospheric pressure,
It is necessary to determine the above-mentioned standard values depending on the location.

Conventionally, as shown in FIG. 2, the altitude correction unit 5
Is provided and the standard value is corrected according to the altitude above sea level. However, the altitude above sea level at the measurement location is often unknown, and when the barometric pressure is measured inside the building, the altitude above sea level also changes depending on the number of floors at the measurement site, which makes it difficult to change the above reference values. is there.

Particularly, in the initial stage of operating the apparatus, there is no past measured value, and the factors of the fluctuation situation do not contribute to the determination. Therefore, if the altitude correction is not performed correctly, the determination of the atmospheric pressure becomes a determination different from the current state. There is a problem.

The present invention has been made in view of the above points, and has the above-mentioned problem, that is, when determining the level of atmospheric pressure, it is necessary to correct the determination reference value according to the altitude above sea level of the atmospheric pressure measurement point. It is an object of the present invention to provide an atmospheric pressure level determination device that can be easily solved, and a weather prediction device using the device.

[0010]

In order to solve the above problems, the present invention measures the atmospheric pressure for weather prediction, compares the measured value with a predetermined judgment reference value, and judges the high or low of the measured value. The device for determining whether the height is high or low, forcibly changing the high or low determination result of the measurement value by changing the determination standard at the time of starting the device, and providing an initial calibration unit for adjusting the high or low determination result to the current weather condition. It is characterized by

Further, as one of the several methods of the weather forecasting apparatus for comprehensively judging the weather by using some methods for forecasting the weather, the above-mentioned atmospheric pressure level determining apparatus is used. And

[0012]

By configuring the atmospheric pressure determination device as described above, the initial calibration unit reversely corrects the determination reference value by matching the determination result of whether the measured atmospheric pressure value is high or low at the time of startup, and This judgment reference value is used for judgment of high and low. This makes it possible to accurately predict the weather thereafter, and to predict the weather relatively early after the start.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an atmospheric pressure level determining apparatus according to an embodiment of the present invention.

The apparatus for determining the level of this atmospheric pressure comprises an atmospheric pressure measuring section 1, an atmospheric pressure storage section 2 and a weather determining section 3 as in the apparatus of FIG. The weather determination unit 3 performs the weather determination based on the level of atmospheric pressure by the determination method shown in FIG. 3, similarly to the weather determination unit 3 in FIG.
Reference numeral 4 denotes an initial calibrating unit, and the initial calibrating unit 4 includes a memory rewriting unit 4-1 and a switch 4-3 which operate to rewrite all past measured values to the present measured values when the apparatus starts operating. The determination change unit 4-2 sequentially changes the determination reference value in response to the instruction.

FIG. 4 is a diagram showing a judgment operation of the atmospheric pressure high / low judgment device having the above structure. The determination operation will be described below with reference to FIG. It is assumed that the measured atmospheric pressure at the time of starting the device is 1000 mbar and the actual weather is cloudy. The memory rewriting unit 4-1 of the initial calibration unit 4 rewrites the stored value of the atmospheric pressure storage unit 2 into the measured value of 1000 mbar. As a result, the atmospheric pressure has not changed in the past, and the future weather predicted by the weather determination unit 3 becomes the same as the present.

When the measured pressure value of 1000 mbar is used as a standard value of 1013 mbar, which is a standard atmospheric pressure, when the weather determination unit 3 determines whether the atmospheric pressure is high or low, the weather is predicted to be rain (see FIG. 3). Therefore, here, since the actual weather is cloudy, the switch 4-
3 is operated to lower the judgment reference value serving as a judgment reference downward by a predetermined amount, and the judgment reference value is corrected via the judgment changing unit 4-2. Then, the level of the atmospheric pressure is determined based on the corrected reference value, and the weather is predicted from the determination result. If the weather is predicted to be rain, the judgment reference value is further lowered to judge whether the atmospheric pressure is high or low, and the weather is predicted from this judgment. Then, the process is performed until the predicted value of the weather becomes the present weather, that is, cloudy.

In the present embodiment, there are three types of forecast weather: sunny, cloudy, and rain. When the switch 4-3 is operated, the same output is obtained several times, but by repeating the operation, the current weather can be obtained. Can be matched. Further, for example, when the present weather is cloudy rather than rain, as shown in FIG. 4, the present atmospheric pressure of 1000 mbar is moved to the atmospheric pressure range (T3) which is judged to be rain in the atmospheric pressure range (T2) which is judged to be cloudy. And set it.

Since the above-mentioned judgment of the atmospheric pressure is made by the difference between the measured atmospheric pressure value and the judgment reference value, the judgment reference value used, for example, 1013 mbar is lowered below that.
Correcting and increasing the measured atmospheric pressure value is the same, and a method of correcting the measured atmospheric pressure value is also possible.

Thereafter, the correction value may be stored and the judgment reference value and the measured value may be calibrated before use.

[0020]

As described above, according to the present invention, by providing a simple initial calibration unit and operating it at startup,
It is possible to substitute the correction based on the altitude above sea level, which is apt to be neglected, so that the determination of high pressure / low pressure becomes more accurate, and the initial characteristics can be expected to improve.

In addition, although accurate calibration is necessary for measuring the atmospheric pressure, since the present invention corrects it at the time of use, accurate calibration of the absolute value is not always necessary. Simplification is possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a device for determining the level of atmospheric pressure according to the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional atmospheric pressure height determination device.

FIG. 3 is a diagram for explaining an example of weather determination based on atmospheric pressure.

FIG. 4 is a diagram for explaining a determination operation of the atmospheric pressure height determination device of the present invention.

[Explanation of symbols]

 1 Atmospheric pressure measurement unit 2 Atmospheric pressure storage unit 3 Weather determination unit 4 Initial calibration unit 4-1 Memory rewriting unit 4-2 Determination change unit 4-3 Switch

Claims (2)

[Scope of utility model registration request] 1. An atmospheric pressure level determination device for determining atmospheric pressure for weather prediction, comparing the measured value with a predetermined determination reference value, and determining whether the measured value is high or low. An apparatus for determining whether the atmospheric pressure is high or low, in which an initial calibration unit for forcibly changing the determination result of the measured value by changing the reference and matching the determination result of the height with the current weather condition is provided. 2. A weather forecasting apparatus that comprehensively determines the weather by using several methods for weather forecasting, wherein the atmospheric pressure level determination according to claim 1 is one of the weather forecasting methods. A weather forecasting device characterized by using the device.