JP2017020830A - Anemometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce influence on measurement results of wind having collided on a container.SOLUTION: The anemometer includes: a base plate; an ultrasonic sensor above the base plate, for measuring a wind direction and a wind speed; and a container below the base plate, for containing electronic components, the base plate being larger than the container in the planar view, and an edge of the base plate serving as a wind preventing part for preventing wind having collided on the container from flowing to above the base plate.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an anemometer.

  Currently, there are anemometers that measure the wind direction and wind speed using ultrasonic waves. In this anemometer, for example, as shown in Patent Documents 1 and 2 below, a plurality of ultrasonic sensors that transmit and receive ultrasonic waves are arranged on a base plate, and are received from an ultrasonic sensor that receives ultrasonic waves. The propagation time of the ultrasonic wave is calculated based on the signal, and the wind direction and the wind speed in the plane on the base plate are calculated based on the propagation time of the ultrasonic wave. The anemometer includes electronic components such as a transmission circuit that generates a transmission signal to the ultrasonic sensor, a reception circuit that receives a reception signal output from the ultrasonic sensor, and an arithmetic control unit that calculates the propagation time. An accommodating portion for accommodating is provided below the base plate.

http://www.prede.com/PDF/pdf_tyouonpa/windsonicpgws-100.pdf http://www.senecom.co.jp/8371-UM.html

  By the way, in the above prior art, when a barometer or the like is newly accommodated in the accommodating part, it is necessary to enlarge the accommodating part. However, when the accommodating part is enlarged, the wind that collides with the side surface of the accommodating part is above the base plate. There was a problem that this wind greatly affected the measurement results.

  This invention is made | formed in view of the situation mentioned above, and it aims at reducing the influence on the measurement result by the wind which collided with the accommodating part.

  In order to achieve the above object, in the present invention, as a first solution, a base plate, an ultrasonic sensor provided on the upper surface side of the base plate for measuring wind direction and wind speed, and a lower surface of the base plate An anemometer provided on a side and containing an electronic component, wherein the base plate is larger than a shape of the storage unit in a plan view, and a side edge of the base plate is the storage unit A means is adopted that is a windproof portion for preventing the wind that has collided with the base plate from going around to the upper surface side of the base plate.

  In the present invention, as the second solving means, in the first solving means, a means is adopted in which the windproof portion has a return in the downward direction.

  In the present invention, as the third solving means, in the first or second solving means, further comprising a roof plate disposed to face the base plate so as to sandwich the ultrasonic sensor, the roof The plate adopts a means that is symmetrical with respect to the base plate so as to sandwich the ultrasonic sensor.

  In the present invention, as a fourth solving means, in any one of the first to third solving means, a space is provided around the housing portion with a gap between the housing portion, and the inside of the housing portion by direct sunlight is provided. A means of providing a cover for preventing a temperature rise is employed.

  According to the present invention, the base plate, the ultrasonic sensor for measuring the wind direction and the wind speed provided on the upper surface side of the base plate, and the accommodating portion for accommodating the electronic component provided on the lower surface side of the base plate are provided. An anemometer that has a base plate larger than the shape of the housing portion in plan view, and the edge of the base plate is a windproof portion for preventing the wind that has collided with the housing portion from entering the upper surface side of the base plate Therefore, the influence on the measurement result by the wind which collided with the accommodating part can be reduced.

It is front sectional drawing (a) of the anemometer which concerns on one Embodiment of this invention, and the top view of a base board. It is a functional block diagram of the anemometer which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The wind direction anemometer A according to the present embodiment is a measurement device that is installed outdoors and measures the wind direction and the wind speed. As shown in FIGS. 1 and 2, the anemometer A includes ultrasonic sensors W1, W2, W3, W4, a base plate D, a housing portion S, a roof plate Y, pillar portions H1, H2, H3, H4, and transmission. A circuit T, a receiving circuit R, and an arithmetic control unit C are included.

  The four ultrasonic sensors W1 to W4 are annularly arranged on the base plate D at equal intervals. That is, the ultrasonic sensor W1 and the ultrasonic sensor W3 are disposed to face each other. Further, the ultrasonic sensor W2 and the ultrasonic sensor W4 are disposed to face each other. In addition, each of the ultrasonic sensors W1 to W4 is electrically connected to the transmission circuit T and the reception circuit R. The ultrasonic sensors W1 to W4 generate ultrasonic waves based on the transmission signal input from the transmission circuit T, convert the received ultrasonic waves into electric signals, and output the received signals to the reception circuit R as reception signals.

  For example, in the anemometer A, first, the ultrasonic sensor W1 generates an ultrasonic wave, and the ultrasonic sensor W3 receives the ultrasonic wave. Next, the ultrasonic sensor W2 generates an ultrasonic wave, and the ultrasonic sensor W4 receives the ultrasonic wave. Next, the ultrasonic sensor W3 generates an ultrasonic wave, and the ultrasonic sensor W1 receives the ultrasonic wave. Finally, the ultrasonic sensor W4 generates an ultrasonic wave, and the ultrasonic sensor W2 receives the ultrasonic wave. The wind direction anemometer A measures the wind direction and the wind speed with the transmission / reception operation by the ultrasonic sensors W1 to W4 described above as one cycle. By alternately changing the combination of transmitting and receiving ultrasonic waves, the influence of the reverberation of ultrasonic waves can be suppressed.

  The base plate D is made of a resin such as polycarbonate having weather resistance, has a circular shape in plan view, and is a plate-like member for supporting the ultrasonic sensors W1 to W4 and the column portions H1 to H4. As described above, the four ultrasonic sensors W1 to W4 are annularly arranged on the upper surface d1 of the base plate D at regular intervals.

  Further, the four pillar portions H1 to H4 are annular around the ultrasonic sensors W1 to W4 arranged in an annular shape, and are positioned opposite to the intermediate points between the ultrasonic sensors W1 to W4. As shown in FIG.

  Further, a housing portion S is provided on the lower surface d2 side of the base plate D. The base plate D is formed to be larger than the planar view shape of the housing portion S. That is, the base plate D is formed so as to be larger than the bottom surface having a large area of the accommodating portion S having a truncated cone shape. Further, the edge of the base plate D is a windproof portion d3 for preventing the wind that has collided with the side surface of the housing portion S from flowing into the upper surface d1 side of the base plate D. Furthermore, the windbreak part d3 has the return in the downward direction.

  Similarly to the base plate D, the housing part S is made of a resin such as polycarbonate having weather resistance, has a truncated cone shape, and is provided so that the bottom surface side having a large area is in contact with the lower surface d2 of the base plate D. Yes. This accommodating part S accommodates electronic components, such as the transmission circuit T, the receiving circuit R, and the calculation control part C, the board | substrate which is not shown in figure, and a barometer. That is, the housing portion S is a housing that houses electronic components and protects the electronic components from external harsh environments such as sunlight, rainwater, and wind. Further, a side cover s1 is provided around the side surface of the housing part S to prevent a temperature rise inside the housing part S due to direct sunlight.

  The roof board Y is a plate-like member made of a resin such as polygarbonate having weather resistance, like the base board D and the housing part S, and having a circular shape. The roof plate Y is supported by the four column portions H1 to H4. That is, the roof plate Y is disposed to face the base plate D so as to sandwich the ultrasonic sensors W1 to W4.

  The four pillar portions H1 to H4 are made of a resin such as weather-resistant polycarbonate, like the base plate D, the accommodating portion S, and the roof plate Y, and are columnar and have the same length. It is a member.

  In addition, as described above, the pillar portions H1 to H4 are annular around the ultrasonic sensors W1 to W4 arranged in an annular shape, and are positioned opposite to the intermediate points between the ultrasonic sensors W1 to W4. As shown, they are arranged at equal intervals. The column portions H1 to H4 support the roof plate Y. By arranging the column portions H1 to H4 as described above, it is possible to suppress the influence on the ultrasonic sensors W1 to W4 due to the wind that collides with the column portions H1 to H4.

  The transmission circuit T is provided for each of the ultrasonic sensors W1 to W4 and is electrically connected to the ultrasonic sensors W1 to W4. The transmission circuit T generates a transmission signal based on the control signal input from the arithmetic control unit C, and outputs the transmission signal to the ultrasonic sensors W1 to W4. The ultrasonic sensors W1 to W4 are driven to generate ultrasonic waves when a transmission signal is input from the transmission circuit T.

  The receiving circuit R is provided for each of the ultrasonic sensors W1 to W4 and is electrically connected to the ultrasonic sensors W1 to W4. The reception circuit R amplifies the reception signals input from the ultrasonic sensors W1 to W4 and outputs them to the arithmetic control unit C.

  The arithmetic control unit C includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and an interface circuit that transmits / receives various signals to / from each electrically connected unit. . The arithmetic control unit C controls the entire operation of the anemometer A by performing various arithmetic processes based on various arithmetic control programs stored in the ROM and communicating with the respective units.

  For example, the arithmetic control unit C calculates the wind direction and the wind speed based on the propagation time of the ultrasonic wave indicated by the reception signal input from the reception circuit R. The transmission circuit T, the reception circuit R, and the calculation control unit C are mounted on a substrate (not shown) and are accommodated in the accommodation unit S.

  Next, the action of the anemometer A configured in this way will be described in detail.

  In the wind direction anemometer A, the base plate D is formed to be larger than the plan view shape of the housing portion S. That is, the base plate D is formed so as to be larger than the bottom surface having a large area of the accommodating portion S having a truncated cone shape. Further, the edge of the base plate D is a windproof portion d3 for preventing the wind that has collided with the housing portion S from flowing around to the upper surface d1 side of the base plate D. Moreover, the windbreak part d3 has the return in the downward direction.

  As a result, the wind that has collided with the side surface of the housing part S and headed upward is windproof of the base plate D that protrudes from the plan view shape of the housing part S (the bottom surface of the truncated cone-shaped housing part S having a large area). It collides with the part d3 and is prevented from going around to the upper surface d1 side of the base plate D. In addition, since the windproof portion d3 has a return in the downward direction, it prevents the wind that has collided with the side surface of the accommodating portion S and directed upward, from entering the upper surface d1 side of the base plate D, Can be directed downwards.

  According to the present embodiment, the base plate D, the ultrasonic sensors W1 to W4 for measuring the wind direction and the wind speed, provided on the upper surface d1 side of the base plate D, and the lower surface d2 side of the base plate D are provided. An anemometer A including an accommodating part S for accommodating electronic components, wherein the base plate D is larger than the planar view shape of the accommodating part S, and the edge of the base plate D is located in the accommodating part S. Since it is the windproof part d3 for preventing the wind which collided around from the upper surface d1 side of the baseplate D, the influence on the measurement result by the wind which collided with the accommodating part S can be reduced.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, For example, the following modifications can be considered.
(1) In the said embodiment, although the wind-proof part d3 of the baseplate D has the return in the downward direction, this invention is not limited to this. As long as the base plate D is formed larger than the plan view shape of the accommodating portion S, the return of the windproof portion d3 may not be formed downward.

(2) In the above embodiment, the roof plate Y is a circular flat plate, but the present invention is not limited to this. For example, the roof plate Y and the ultrasonic sensors W <b> 1 to W <b> 4 may be sandwiched so as to have a vertically symmetrical shape with respect to the base plate D. That is, an upward turn that is vertically symmetric with respect to the downward return of the windproof portion d3 of the base plate D may be formed on the edge of the roof plate Y. In this way, by making the roof plate Y symmetrical in shape with respect to the base plate D, the flow velocity of the wind flowing between the roof plate Y and the base plate D is increased in the vicinity of the roof plate Y and the base plate D. It is possible to prevent a difference from occurring in the vicinity.

A Wind direction anemometer W1, W2, W3, W4 Ultrasonic sensor D Base plate S Housing part Y Roof plate H1, H2, H3, H4 Pillar part T Transmitter circuit R Receiver circuit C Calculation control part d1 Upper surface d2 Lower surface d3 Windproof part s1 Side cover

Claims (4)

An anemometer comprising a base plate, an ultrasonic sensor provided on the upper surface side of the base plate for measuring the wind direction and wind speed, and a storage portion provided on the lower surface side of the base plate for storing electronic components. Because
The base plate is larger than the planar view shape of the housing portion,
The wind direction anemometer, wherein the edge of the base plate is a windproof portion for preventing wind that has collided with the housing portion from going around to the upper surface side of the base plate.   The wind direction anemometer according to claim 1, wherein the windbreak portion has a downward turn. Further comprising a roof plate disposed opposite to the base plate so as to sandwich the ultrasonic sensor,
The wind direction anemometer according to claim 1 or 2, wherein the roof plate has a vertically symmetrical shape with respect to the base plate so as to sandwich the ultrasonic sensor.   4. The device according to claim 1, further comprising a cover provided around the housing portion with a gap from the housing portion to prevent temperature rise inside the housing portion due to direct sunlight. An anemometer as described in one paragraph.

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