JPH1172502A - Method for judging abnormality of anemometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect an abnormality of an anemometer quickly with the use of wind direction/wind velocity data, by judging an abnormality from the frequency of wind direction changes within the time in which a windless state continues for a predetermined time or longer, and outputting an abnormality alarm. SOLUTION: A freeze alarm of an anemometer is turned off. When the wind velocity is not larger than a fixed value (e.g. 0.4 m), it is set as a windless state. When a wind velocity data of the anemometer becomes not larger than a fixed value, the counting of time and frequency N of wind direction changes are started. When the frequency N is not larger than a set count within a predetermined time T (30 minutes to three hours), it is judged as the normal windless state, and the counting is cleared. On the other hand, if the frequency N is not smaller than the set count, the anemometer is judged as abnormal, and a freeze alarm is outputted. The counting is cleared and fresh counting is started. Thereafter, when data of the wind velocity of not smaller than 0.4 m is obtained from the anemometer, the counting is cleared to return to an initial state and the freeze warning for the anemometer is turned off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for judging an anomaly of a wind direction / anemometer, and more particularly to a method for preventing an abnormality from being detected by freezing of a wind speed axis of a wind direction / anemometer during winter. The present invention relates to a method for determining an abnormality of a wind direction / anemometer.

[0002]

2. Description of the Related Art Conventionally, in railways and the like, wind direction / wind speed meters are provided at each point along a route to constantly monitor the wind direction / wind speed, and when a strong wind is detected, an alarm is output and a train or the like is used. A system that issues a command such as a reduction in operating speed or a stop of operation is employed.

In such a case, the reliability of the wind speed data is very important for detecting a strong wind. However, in a cold region or the like, when there is no wind or near the wind speed, water droplets or crevices are formed on the propeller of the wind direction / anemometer. If the temperature suddenly drops after the adhesion, the adhering water droplets or grooves become ice, and the propeller unit freezes and stops rotating.

[0004] For this reason, if left in a frozen state, correct wind speed data cannot be obtained, and the reliability of the wind speed data decreases.
Since an unexpected accident may occur, it is necessary to obtain wind direction / wind speed data while monitoring the frozen state of the wind direction / anemometer.

Referring to FIGS. 4 and 5, a schematic configuration of a conventional wind direction / wind speed monitoring telemeter system and a wind direction / wind speed meter will be described. See FIG. 4 In a conventional wind direction / wind speed monitoring telemeter system,
The wind direction / wind speed is measured by a wind direction / wind meter 11 installed at each point along the route, and the measurement result is transmitted to the monitoring device 13 by the transmission device 12 via the metallic communication cable or the like at all times, for example, every two seconds. When the monitoring device 13 detects a strong wind, an alarm is issued.

Referring to FIG. 5, the wind direction / wind speed meter 11 used in such a wind direction / wind speed monitoring telemeter system comprises a propeller section 14 and a tail section 15, and the propeller section 14 is connected to a tail section 15 via a wind speed shaft 16. The tail unit 15 is rotatably attached to a column 18 via a wind direction shaft 17, and the wind direction shaft 17 is covered with a cover 19.

[0007]

However, in such a wind direction / wind speed monitoring telemeter system, since the wind speed axis 16 of the propeller section 14 of the wind direction / wind speed meter 11 is exposed and horizontal, the rain In snow, water droplets and crevices attach to the ice, which causes freezing and makes it easy to freeze, which causes a problem that the reliability of wind speed data during winter is reduced. In addition, since the wind direction axis 17 is vertical and is covered with the cover 19, water droplets and razors do not directly adhere to the wind direction axis 17, so that it is hard to freeze.

Further, in the conventional wind direction / wind speed monitoring telemeter system, data abnormalities may occur due to the overturn of the column 18 of the wind direction / wind speed meter 11 or the entanglement of dust or trees on the wind speed shaft 16. Such an abnormality has been performed by detecting the continuation of the no-wind state due to the wind speed.

However, since a windless state usually occurs,
It is necessary to perform continuous monitoring for 6 to 8 hours to detect the abnormality, and there is a problem that the abnormality detection of the wind direction / anemometer is delayed.

[0010] Accordingly, an object of the present invention is to quickly detect abnormality of the wind direction / wind speed meter using wind direction / wind speed data.

[0011]

FIG. 1 is an explanatory view of the principle configuration of the present invention. Referring to FIG. 1, means for solving the problems in the present invention will be described. See FIG. 1 (1) In the present invention, in the anomaly determination method of the anemometer / anemometer, when a windless state in which the wind speed data obtained by the anemometer / anemometer is less than a predetermined value continues for a predetermined time T or more, a predetermined time T Of wind direction change N in wind direction data
, An abnormality of the wind direction / anemometer is determined, and an abnormality alarm is output.

As described above, the present invention is based on the premise that the wind direction axis is covered with the cover, and therefore the possibility of the wind direction axis being frozen and the possibility of dust being entangled is very low. By measuring the number N of changes in the wind direction in a windless state without using other means, it is possible to quickly and remotely determine an abnormality in the wind direction / anemometer, particularly, freezing of the wind direction / anemometer.

[0013] The windless state in the present invention means a case where the wind speed is not more than a predetermined value other than the completely windless state, and the predetermined value is set experimentally according to the application. The value T of the predetermined time is also set so that a quicker judgment can be made based on the weather conditions in which the wind direction / anemometer is installed. It is set to a value that eliminates the influence of noise such as a change in the direction of the anemometer based on other vibrations such as accompanying vibration.

Further, in the present invention, in the above (1), when the wind speed data obtained by the wind direction / anemometer becomes a windless state of a predetermined value or less, the time counting and the wind direction counting are started, and within a predetermined time T, When the wind speed becomes equal to or more than a predetermined value, the time count and the wind direction count are cleared and a new count is started. It is characterized in that abnormality of the wind direction / anemometer is determined.

By counting the duration of the windless state and counting the number of wind direction changes in the windless state in such a flow, it is possible to quickly and accurately determine an abnormality in the wind direction / anemometer.

(3) According to the present invention, in the above (1) or (2), when it is determined that the wind direction / anemometer is abnormal, the temperature is referred to the temperature data and the temperature is equal to or lower than a predetermined set temperature. , A freeze warning is output.

As described above, when it is determined that the wind direction / anemometer is abnormal, there is a possibility that dust or the like may be entangled in the wind speed axis. , It is possible to easily determine whether the abnormality is an abnormality due to freezing.

(4) Further, according to the present invention, in the above (3), when the air temperature is equal to or lower than a predetermined set temperature, a freezing alarm is output and the heating means for heating the wind speed axis of the wind direction / anemometer is provided. A heating power supply is applied.

As described above, when the determination of freezing is made,
By applying a heating power to the heating means for heating the wind speed axis of the wind direction / anemometer, in particular, by heating the heating means embedded in the wind speed axis, freezing can be eliminated promptly.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Here, a first embodiment of the present invention will be described with reference to FIG. FIG. 2 is a flow chart of the detection of freezing of the anemometer / wind meter according to the first embodiment of the present invention. Hereinafter, for example, when the wind speed is 0.4 m or less, a windless state is set, and when the wind speed data of the anemometer becomes equal to or less than a certain value, time counting is started. Start counting.

The number of times the wind direction changes is set to a counter so that it counts once when the wind direction changes by a predetermined angle or more from the immediately preceding wind direction. When the wind speed data of the anemometer exceeds a certain value, the time is counted. And clear the wind direction count and return to the initial state.

In this case, the predetermined angle differs depending on the installation location. For example, if there is no obstacle near the installation location, the predetermined angle is set to a small value. The predetermined angle is set to be large, and varies from 3 ° to 7 °, depending on the installation location.
It is desirable to set to.

According to this time count, if the wind direction change frequency N is equal to or less than the set frequency within a predetermined time T (= 30 minutes to 3 hours), it is determined that the wind is normal. , Clear the time count and wind direction count and return to the initial state.

The set number of times in this case also differs depending on the installation location. For example, if there is no obstacle near the installation location, the predetermined number is set to a small number. The number of times is set to be large, and differs depending on the installation location.

For example, since the measurement data is sent every two seconds, it is desirable to set it to 1 to 1800 times, more preferably to 1 to 900 times per hour.
For example, when the set time T is 30 minutes, 1 to 900 times,
More preferably, it is set to 1 to 450 times, and when the set time T is 3 hours, 1 to 5400 times, more preferably 1
It may be set to ~ 2700 times.

On the other hand, when the windless state has reached the predetermined time T, if the number N of wind direction changes is equal to or greater than the set number within the predetermined time T, the wind direction frequently increases despite the windless state. Since the abnormal data was obtained, it was determined that the wind direction / anemometer was abnormal, an alarm was issued to freeze the wind direction / anemometer, the time count and wind direction count were cleared, and a new count was performed. To start.

In this case, the anomaly of the wind direction / anemometer is not necessarily freezing, but the frequency of occurrence of the anomaly is extremely high. It is. In the case of weather conditions in which freezing does not occur, it is determined that dust and trees are entangled, and means for removing dust and trees is taken.

Thereafter, when wind speed data of 0.4 m or more is obtained by the anemometer, it means that the freezing of the wind speed axis has been eliminated, and the obtained wind speed data is treated as reliable data. , Clear time count and wind direction count, return to initial state and turn on wind direction / anemometer freezing alarm
Set to FF.

In this case, the lower limit of the set number of wind direction changes is determined by the direction change of the tail portion of the anemoscope due to vibrations caused by an earthquake or passage of a train, or other artificial vibrations such as blasting in a quarry. In order to avoid the influence of the wind direction change detected as a result, the wind direction / anemometer is determined based on an empirical rule according to the environment of the installation place.

As described above, in the first embodiment of the present invention, only the wind speed data obtained from the wind direction / anemometer itself and the wind direction data are used to determine whether the wind direction / anemometer is abnormal, that is, the wind speed axis. Freezing can be quickly determined and again,
The wind speed data from the time when the wind speed data of 1.0 m or more is obtained is treated as reliable data.

In addition, even if the abnormality is entangled with dust or trees, the abnormality can be determined in 30 minutes to 3 hours, for example, about 1 hour. It is possible to quickly determine the abnormality.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a flow chart of an anomaly detection of an anemometer / wind anemometer according to a second embodiment of the present invention. Below, for example,
When the wind speed is 0.4 m or less, a windless state is set. When the wind speed data of the anemometer becomes a fixed value or less, time counting is started, and together with the start of the time counting, the wind direction meter is operated under the same conditions as in the first embodiment. Starts counting the number N of changes in the wind direction due to.

In this case as well, the time count and the wind direction count are cleared when the wind direction change count N is equal to or less than the set count within the predetermined time T (= 30 minutes to 3 hours) by the time count. Then, the number of times set in this case is set in the same manner as in the first embodiment.

On the other hand, when the windless state has reached the predetermined time T, if the number N of wind direction changes is equal to or more than the set number within the predetermined time T, it is determined that the wind direction / anemometer is abnormal. The air temperature is referred to by a temperature sensor provided in the wind direction / anemometer.

If the temperature S is equal to or higher than the set temperature, it is determined that freezing does not occur, an alarm is output for an anomaly of the wind direction / anemometer, the time count and the wind direction count are cleared, and a new count is started. At the same time, take measures to remove entangled trash and trees.

In this case, the set temperature is set in a place where the temperature is likely to change, for example, when the temperature rises in a short period after freezing, the ice may not be completely melted.
On the other hand, in a place where the temperature changes gradually, the temperature is completely melted at a certain temperature, so that the set temperature is set to be small, and the set temperature is set to 0 based on the difference in climatic conditions. It is desirable to set the temperature to -10 ° C.

On the other hand, if the air temperature S is lower than the set temperature, it is determined that the wind speed axis is frozen, an alarm is output for the freezing of the wind direction / anemometer, and the heating coil and the like housed in the wind speed axis are heated. The means is connected to a means for supplying electricity, and a heating power supply is applied for t minutes, whereby the ice is thawed by heating from the inside and the connection is released after a lapse of t minutes. Also in this case, when the alarm is output, the time count and the wind direction count are cleared and a new count is started.

The heating time t in this case is appropriately set according to the climatic conditions and the size of the wind direction / anemometer. After the time T, a warning of freezing of the wind direction / anemometer is output, and reheating starts.

As described above, in the second embodiment of the present invention, the freezing of the wind speed axis can be automatically and forcibly eliminated by referring to the temperature data together. , The wind direction / anemometer can be quickly normalized and restored, and the train operation management can always be performed based on reliable data.

Also, in this case, since the heating means is housed inside the wind speed axis, there is no need to arrange the heating means outside the wind direction / anemometer, so that the apparatus does not become large-sized, and the inside of the apparatus is not increased. Heating, so that it is not affected by wind as in the case of hot air blowing.

When an abnormality is detected, even if the automatic thawing means is provided, if the temperature S is equal to or higher than the set temperature set for each installation location, the wind speed axis is not heated. The entangled combustible dust and the like do not accidentally ignite or burn and destroy or damage the anemometer.

[0042]

According to the present invention, since anomaly of the wind direction / anemometer, particularly, the freezing of the wind speed axis is determined by using the wind direction / wind speed data, the freezing or the garbage and tree can be more quickly performed than before. Anomalous wind direction / anemometer due to entanglement can be determined, and freezing can be automatically and forcibly released by providing a heating means, which greatly contributes to improvement of reliability of wind speed data.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a basic configuration of the present invention.

FIG. 2 is an explanatory diagram of a freeze determination method according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram of an abnormality determination method according to a second embodiment of the present invention.

FIG. 4 is an explanatory diagram of a conventional wind direction / wind speed monitoring telemeter system.

FIG. 5 is a schematic configuration diagram of a wind direction / anemometer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Wind direction / anemometer 12 Transmission device 13 Monitoring device 14 Propeller part 15 Tail part 16 Wind speed axis 17 Wind direction axis 18 Prop 19 Cover

Claims (4)

[Claims] When a windless state in which the wind speed data obtained by the wind direction / anemometer is equal to or less than a predetermined value continues for a predetermined time or more, an abnormality of the wind direction / anemometer is determined based on the number of wind direction changes in the wind direction data within the predetermined time. An abnormality determination method for an anemometer / wind anemometer, which determines and outputs an abnormality alarm. 2. A time count and a wind direction count are started when the wind speed data obtained by the wind direction / anemometer becomes a windless state of a predetermined value or less, and the wind speed becomes equal to or more than the predetermined value within the predetermined time. In the event that the wind count and the wind direction count are cleared, a new count is started, and if the no-wind state continues for the predetermined time or more, the abnormality of the wind direction / anemometer is determined from the number of wind direction changes by the wind direction count. 2. The method of claim 1, further comprising the steps of: 3. The method according to claim 2, wherein when the wind direction / anemometer is determined to be abnormal, the temperature data is referred to, and when the temperature is equal to or lower than a predetermined set temperature, a freeze warning is output. Item 3. An abnormality determination method for an anemometer / wind anemometer according to item 1 or 2. 4. When the temperature is equal to or lower than a predetermined set temperature, a freezing alarm is output, and a heating power source is applied to heating means for heating a wind speed axis of the wind direction / anemometer. Item 3. An anomaly determination method for an anemometer / anemometer according to item 3.