KR101592252B1 - Self-Generating Phase-Difference-Based Continuous-Wave Ultrasound Wind Direction Anemometer - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous wave ultrasonic wave wind direction anemometer based on self-generated phase difference. More specifically, it is possible to minimize the power supplied from a ship or the like by making it possible to self-generate electricity, and the wind speed measurement by the ultrasonic wave can be stably and smoothly performed continuously while performing the high efficiency wind power generation. The present invention relates to a self-generating phase-difference-based continuous wave ultrasonic airflow anemometer capable of measuring a phase difference using a transmitting sensor and a receiving sensor, thereby obtaining a wind speed and a wind direction.
To this end, the present invention relates to a lower base disposed on an installation surface; A plurality of supports vertically disposed along the outer periphery of the upper surface of the lower base; An upper base spaced apart above the lower base and supported and supported by the support; A plurality of rotating blades inserted between the lower base and the upper base, wherein the rotating blades are rotatably coupled to the rotating shaft of the center; A self-power generating unit provided in the lower base and receiving rotational power by rotation of the rotation shaft to generate electric energy; A power controller for charging the battery with electric energy generated by the self-power generator or converting the battery into a specific voltage form; And an ultrasonic measuring unit fixed to the upper surface of the upper base and measuring the wind direction information and the wind direction information by ultrasonic waves. The self-generating unit includes an upper rotator and a lower rotator spaced from each other, The neodymium magnet of the upper rotator and the neodymium magnet of the lower rotator are arranged so as to face each other with their opposite polarities, and each of the neodymium magnets has a fan shape or a trapezoid shape, and the neodymium magnet The present invention provides a self-generating type phase-difference-based continuous wave ultrasonic wave directional anemometer in which a coil is located at the center of the anemometer.

Description

Self-Generating Phase-Difference-Based Continuous-Wave Ultrasound Wind Anemometer {omitted}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous wave ultrasonic wave wind direction anemometer based on self-generated phase difference. More specifically, it is possible to minimize the power supplied from a ship or the like by making it possible to self-generate electricity, and the wind speed measurement by the ultrasonic wave can be stably and smoothly performed continuously while performing the high efficiency wind power generation. The present invention relates to a self-generating phase-difference-based continuous wave ultrasonic airflow anemometer capable of measuring a phase difference using a transmitting sensor and a receiving sensor, thereby obtaining a wind speed and a wind direction.

The wind direction anemometer is a device for observing the wind on the ground. It can be classified into a wind type method using a propeller or a rotating cup, a digital method using a digital sensor, an ultrasonic method using an ultrasonic sensor, and a laser method using a laser .

Among them, the ultrasonic method and the laser method measure the wind direction and the wind speed by using frequency variation or visual difference between the transmission and reception of the ultrasonic waves or the laser transmitted by using the air medium in the atmosphere.

Although the penetration rate of ultrasound has recently increased, problems such as the use of special sensors, sensitivity to disturbance, and maintenance difficulties remain as the problems.

The purpose of the wind direction anemometer is to measure the weather conditions of the land and sea, and wind power generation. Especially, the development of wind speed anemometer with low power consumption is becoming more important with the recent introduction of the concept of green ship.

In addition, development of a signal processing system for a wind direction anemometer and a module for interlocking with other systems is required, and development of an indicator for a user interface is required. Specifically, there is a need to develop a communication module for interworking with a recording device such as a VDR (Voyage Data Recorder) on a ship, data logging on its own, or data transmission using a wireless communication module.

Prior Art Document: KR Patent Registration No. 0941289 (issued on Feb. 10, 2010)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an ultrasonic wave anemometer capable of consuming low power according to introduction of a green ship, localizing an anemometer of phase difference ultrasonic wave, And the like.

In order to attain the above object, a self-generating phase-difference based continuous wave ultrasonic wave wind direction anemometer according to the present invention, which is devised to achieve the above object, comprises a lower base disposed on an installation surface; A plurality of supports vertically disposed along the outer periphery of the upper surface of the lower base; An upper base spaced apart above the lower base and supported and supported by the support; A plurality of rotating blades inserted between the lower base and the upper base, wherein the rotating blades are rotatably coupled to the rotating shaft of the center; A self-power generating unit provided in the lower base and receiving rotational power by rotation of the rotation shaft to generate electric energy; A power controller for charging the battery with electric energy generated by the self-power generator or converting the battery into a specific voltage form; And an ultrasonic measuring unit fixed to the upper surface of the upper base and measuring the wind direction information and the wind direction information by ultrasonic waves. The self-generating unit includes an upper rotator and a lower rotator spaced from each other, The neodymium magnet of the upper rotator and the neodymium magnet of the lower rotator are arranged so as to face each other with their opposite polarities, and each of the neodymium magnets has a fan shape or a trapezoid shape, and the neodymium magnet The coil is located at the center of the coil.

The ultrasonic measuring unit calculates the wind direction and the wind speed by measuring the phase difference between the ultrasonic signal received by each receiving sensor and one receiving sensor which continuously transmits ultrasonic signals, a plurality of receiving sensors within the ultrasonic transmission directivity range of the transmitting sensor (V _x ) in the first horizontal axis direction and a second wind velocity (v _x ) in the second horizontal axis (v _x ) intersecting the first horizontal axis, wherein the phase difference between the two received signals increases in proportion to the wind speed the second wind speed in the direction (v _y) is calculated by the equation below, respectively, the overall velocity is calculated as the vector sum of the first velocity and the second velocity.

는 초음파 이동경로와 바람이 이루는 각, v_x와 v_y는 각각 제1 풍속과 제2 풍속)(c is the propagation velocity of the ultrasonic wave, L is the ultrasonic travel path length,? t is the phase difference between the two received signals of the first horizontal axis or the second horizontal axis,

V _x and v _y are the first wind velocity and the second wind velocity, respectively,

The ultrasonic measuring unit includes a top plate and a bottom plate spaced from each other, a bar connecting the top plate and the bottom plate, a transmission sensor provided on the bottom surface of the top plate, and a plurality of reception sensors provided on the top surface of the bottom plate, The upper plate and the lower plate are formed of monocast nylon (MC Nylon), and a sound absorbing plate made of an anti-vibration rubber material is inserted to face the lower portion of the upper plate and the upper portion of the lower plate, respectively.

According to the present invention, it is possible to minimize the power supplied from a ship or the like by making self-power generation possible, and it is possible to stably and smoothly perform the wind speed measurement by the ultrasonic wave while performing the high efficiency wind power generation. The phase difference is measured by using the transmit sensor and the receive sensor, and the wind speed and the wind direction can be obtained through the measurement.

1 is a perspective view of a self-generating phase-difference based continuous wave ultrasonic wind direction anemometer according to a preferred embodiment of the present invention,
Fig. 2 is a perspective view of the self-generating portion of Fig. 1,
3 and 4 are perspective views of the upper rotator and the lower rotator of FIG. 2, respectively,
5 is a conceptual diagram for explaining a sensor arrangement of the ultrasonic measuring unit,
6 is an exploded perspective view of the ultrasonic measuring unit,
7 is a view showing a sensor array of the ultrasonic measuring unit,
FIGS. 8 and 9 are perspective views of a self-generating phase-difference based continuous wave ultrasonic wind direction anemometer according to another embodiment of the present invention,
Figs. 10 to 13 are internal structural diagrams of the self-generating portion in Fig. 8. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

1 is a perspective view of a self-generating type phase-difference based continuous wave ultrasonic wind direction anemometer according to an embodiment of the present invention, FIG. 2 is a perspective view of a self-powered portion of FIG. 1, FIG. FIG. 5 is a conceptual view for explaining the sensor arrangement of the ultrasonic measuring unit, FIG. 6 is an exploded perspective view of the ultrasonic measuring unit, and FIG. 7 is a photograph showing the sensor array of the ultrasonic measuring unit.

1 to 7, the self-generating type phase-difference based continuous wave ultrasonic wind direction anemometer according to an embodiment of the present invention includes a lower base 10, a support 20, a rotary blade 30, an upper base 40 An ultrasonic measuring unit 50, a self-generating unit 60, and a power control unit (not shown).

The lower base 10 is disposed on the mounting surface and supports the entire wind direction and velocity anemometer according to the present invention. In the lower base 10, a self-generating unit 60 and a power control unit may be provided. A support member 20, a rotary vane 30, an upper base 40 and an ultrasonic measuring unit 50 are provided above the lower base 10. The lower base 10 is made of a block-shaped weight having a weight equal to or greater than a set size, so that the wind direction and speed anemometer of the present invention can stably maintain a stable position even under a weather condition in which an external force such as a strong wind is strong.

A plurality of supports 20 are vertically arranged along the outer periphery of the upper surface of the lower base 10 to support and fix the upper base 40 to the lower base 10. The support 20 may be spaced apart around the top edge region of the lower base 10 by a plurality of bar-shaped vertical bars.

The rotary vane 30 is inserted between the lower base 10 and the upper base 40, and a plurality of the rotary vanes 30 are disposed inside the support 20. The rotary vane 30 is coupled to the rotary shaft of the center and rotates to generate a rotary power. The rotary vane 30 may be formed in the form of a propeller that is radially connected to the rotary shaft and rotates using a drag force. A self-generating portion (60) is connected to the rotary shaft of the rotary vane (30).

The upper base 40 is spaced apart above the lower base 10 and is supported and fixed by the support 20. The upper base 40 may be formed in a flat plate shape.

The ultrasonic measuring unit 50 is fixed on the upper surface of the upper base 40 and measures the wind direction information and the wind speed information by ultrasonic waves. 5 to 7, the ultrasonic measurement unit 50 includes a base column 51, a lower plate 52, a reception sensor 53, a lower sound absorption plate 54, a bar 55, An upper sound-absorbing plate 56, an upper plate 57, and a transmission sensor 58.

The upper plate (57) and the lower plate (52) are spaced apart from each other by a bar (55). The bar 55 connects the upper plate 57 and the lower plate 52 to each other. The transmission sensor 58 is provided on the lower surface of the upper plate 57 and a plurality of reception sensors 53 are provided on the upper surface of the lower plate 52. At this time, the lower surface of the upper plate 57 may be formed as a reflection plate, and may be realized as a reflection type.

The upper plate 57 and the lower plate 52 are preferably formed of monocast nylon (MC Nylon). Monocast nylon has excellent mechanical strength and abrasion resistance and can be used from -30 to + 70 ℃. The upper plate (57) and the lower plate (52) serve to block wind in the vertical axis direction to measure two-dimensional wind.

The upper sound-absorbing plate 56 and the lower sound-absorbing plate 54, which are made of a vibration-proof rubber material, are inserted into the upper plate 57 and the lower plate 52 so as to face each other. The upper sound-absorbing plate 56 and the lower sound-absorbing plate 54 prevent ultrasonic transmission due to the self-medium of the structure. When the sensor is completely brought into close contact with the sensor plate without using the sound absorbing plate, the ultrasonic signal is transmitted through the solid-state medium of the sensor array, so that the phase difference of received signals may not occur even when the wind speed changes.

The continuous wave ultrasonic wave direction anemometer for measuring the phase difference between the received signals continuously transmits an ultrasonic signal at one transmission sensor 58 and a plurality of reception sensors 53 within the ultrasonic transmission directivity range of the transmission sensor 58, The wind direction and the wind speed are obtained through the phase difference measurement between the ultrasonic signals received by the respective receiving sensors 53. [

To this end, the ultrasonic measurement unit 50 includes a single transmission sensor 58 for continuously transmitting ultrasonic signals, a plurality of reception sensors 53 provided within the ultrasonic transmission directivity range of the transmission sensors 58, (Not shown) for calculating the wind speed by measuring the phase difference between the received ultrasound signals and calculating the wind direction and the wind speed but measuring the phase difference between any two received signals that increase in proportion to the wind speed.

는 초음파 이동경로와 바람이 이루는 각, d는 하판(52)의 중심에서 각 수신센서(53)까지의 거리, h는 상판(57)과 하판(52) 간의 직선거리를 나타낸다.5, L denotes the length of the ultrasonic movement path,

D represents the distance from the center of the lower plate 52 to each receiving sensor 53 and h represents the linear distance between the upper plate 57 and the lower plate 52. [

The wind speed is obtained by measuring that the phase difference between the two received signals increases in proportion to the wind speed. Unlike the propagation time measurement method, this method is advantageous in that a separate control circuit is not necessary because the transmitter and the receiver are completely separated from each other. Since a phase difference of a signal received in a continuous wave form is measured, when 40 kHz ultrasonic signals are used, up to 40,000 phase difference measurements can be performed in each axis direction at a time, so that the same number of wind direction and wind speed data can be acquired.

5, when a receiving signal phase difference measuring ultrasonic wave direction anemometer is implemented using four receiving sensors 53, a point located at a distance of the same distance from the intersection on a line orthogonal to the transmitting sensor 58, The reception sensor 53 is disposed. When two straight lines are viewed along the x and y axes, the wind speed and the wind direction are obtained by measuring the wind speed components in the respective axial directions and calculating the vector sum of them. Hereinafter, the first horizontal axis is referred to as an x-axis for convenience, and the second horizontal axis that crosses a first horizontal axis is referred to as a y-axis. The first wind velocity in the first horizontal axis direction is v _x and the second wind velocity in the second horizontal axis direction is v _y .

5, in order to obtain the velocity in the x-axis direction, the phase difference of the ultrasonic signals received through R _E and R _W is measured. The measured phase difference? T is expressed by the following equation (1).

Equation (2) below summarizes Equation (1) with respect to wind speed, and substitutes the measured phase difference into Equation (2) to obtain wind speed (v _x ) in the x axis direction.

The y-axis velocity (v _y ) is also obtained by measuring the phase difference between the ultrasonic signals received through R _N and R _S , which are receiving sensors located on the y-axis, and substituting the measured values into Equation (3).

는 초음파 이동경로와 바람이 이루는 각, v_x와 v_y는 각각 제1 풍속과 제2 풍속을 의미한다.In the equations (1) to (3), c represents a propagation velocity of ultrasonic waves, L represents an ultrasonic traveling path length,? T represents a phase difference between two received signals of the first horizontal axis or the second horizontal axis,

V _x and v _y denote the first wind velocity and the second wind velocity, respectively.

The velocity and direction of the actual wind can be obtained by substituting the respective axial wind velocity components v _x and v _y obtained by substituting the phase difference in the east-west direction and the south-north direction into the equations 2 and 3 into the equation for obtaining the vector sum .

2 to 4, the self-generating portion 60 is provided inside the lower base 10 and receives rotational power by rotation of the rotating shaft 61 to generate electric energy. Here, the rotary shaft 61 is the same as or interlocked with the rotary shaft of the rotary vane 30. Although not shown, the electric power control unit charges the battery with electric energy generated by the self-generating unit 60 or converts the electric energy to a specific voltage.

FIG. 2 shows a configuration in which a neodymium magnet 66 is disposed in the upper rotator 62, and FIG. 3 shows a configuration in which a neodymium magnet 66 is disposed in the lower rotator 64.

The self-generating portion 60 includes an upper rotator 62 and a lower rotator 64 spaced from each other, and a plurality of neodymium magnets 66 are formed at the edges of the upper rotator 62 and the lower rotator 64, Respectively.

At this time, the neodymium magnet 66 of the upper rotator 62 and the neodymium magnet 66 of the lower rotator 64 are arranged to face each other with the opposite polarities. This is to increase the strength of the magnetic force. Each neodymium magnet 66 has a fan shape or a trapezoid shape, and a coil is located at the center of the neodymium magnet.

The coil may use a single phase, but it is preferable to apply the three-phase form for efficient power generation and Y connection for voltage gain. In addition, the coil takes the form of a serpentine for the efficient utilization of the available area and the advantages of the wiring, and it is produced in the form of a three-phase Y-connection. The fixed shaft is passed through the center of the coil, and the coil can be fixed using the insulating varnish.

FIGS. 8 and 9 are perspective views of a self-generating phase-difference based continuous wave ultrasonic wind direction anemometer according to another embodiment of the present invention, and FIGS. 10 to 13 are internal structural diagrams of the self-generating portion shown in FIG.

8 and 9, the self-generating phase-difference-based continuous wave ultrasonic wave direction anemometer according to another embodiment of the present invention includes a plurality of rotating blades 130 and 230 in a substantially semi-cylindrical shape at a predetermined distance from the rotational axis, .

FIG. 8 shows an example in which three rotary blades 130 are arranged at intervals of 120 degrees, and FIG. 9 shows an example in which four rotary blades 230 are arranged at intervals of 90 degrees.

As a result of arranging the rotary vane at a position spaced apart from the rotary shaft, it is confirmed by experiments that a larger torque is generated than when the rotary vane is directly connected to the rotary shaft.

Self-generating units 162 and 164 are provided in the lower base 110.

The self-generating parts 162 and 164 are composed of a stator 162 and a rotor 164.

The stator 162 is inserted into the lower base 110 and has a hole at the center thereof. The stator 162 is composed of a core and a coil, and acts as an electromagnet depending on whether power is applied from the outside.

The rotor 164 is inserted into the stator 162. The rotor 164 may have a plurality of permanent magnets arranged in a cylindrical shape. As the permanent magnet, a neodymium magnet may be applied, and the kind of the permanent magnet is not limited thereto.

The rotor 164 is rotated by the rotation of the rotary vanes 130 and 140 so that the electromagnetic induction power generation by the interaction between the rotor 164 and the stator 162 is performed.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10 - Lower base
20 - support
30 - Rotating blades
40 - upper base
50 - Ultrasonic measurement unit
60 -

Claims (3)

A lower base disposed on the mounting surface; A plurality of supports vertically disposed along the outer periphery of the upper surface of the lower base; An upper base spaced apart above the lower base and supported and supported by the support; A plurality of rotating blades inserted between the lower base and the upper base, wherein the rotating blades are rotatably coupled to the rotating shaft of the center; A self-power generating unit provided in the lower base and receiving rotational power by rotation of the rotation shaft to generate electric energy; A power controller for charging the battery with electric energy generated by the self-power generator or converting the battery into a specific voltage form; And an ultrasonic measuring unit fixed to the upper surface of the upper base and measuring the wind direction information and the wind speed information by ultrasonic waves,
The self-generating portion includes an upper rotator and a lower rotator spaced apart from each other, and a plurality of neodymium magnets are radially arranged at the edges of the upper rotator and the lower rotator, respectively. The neodymium magnets of the upper rotator and the neodymium magnets And each of the neodymium magnets has a fan shape or a trapezoid shape, a coil is located at the center of the neodymium magnet,
The ultrasonic wave measuring unit calculates a wind direction and a wind speed by measuring a phase difference between a single transmitting sensor that continuously transmits ultrasonic signals, a plurality of receiving sensors provided within the ultrasonic transmission directivity range of the transmitting sensor, and ultrasonic signals received by the receiving sensors, And calculating a wind speed by measuring that the phase difference between any two received signals increases in proportion to the wind speed,
The first wind velocity v _{x in} the first horizontal axis direction and the second wind velocity v _{y in} the second horizontal axis direction intersecting the first horizontal axis are respectively calculated by the following equations and the total wind velocity is calculated from the first wind velocity and the second wind velocity Is calculated as a vector sum of wind speeds,

(c is the propagation velocity of the ultrasonic wave, L is the ultrasonic travel path length,? t is the phase difference between the two received signals of the first horizontal axis or the second horizontal axis,

V _x and v _y are the first wind velocity and the second wind velocity, respectively,
The ultrasonic measuring unit includes a top plate and a bottom plate spaced from each other, a bar connecting the top plate and the bottom plate, a transmission sensor provided on the bottom surface of the top plate, and a plurality of reception sensors provided on the top surface of the bottom plate. And the upper plate and the lower plate are formed of monocast nylon (MC Nylon), and a sound absorbing plate made of an anti-vibration rubber material is inserted to face the lower portion of the upper plate and the upper portion of the lower plate, respectively.
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