JP2016161549A - Anemoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anemoscope capable of being installed in a narrow space and measuring both of a horizontal component and a vertical component of wind direction.SOLUTION: Movable parts 10 and 40 movably mounted on fixed parts 20 and 50 around a first rotation axis so as to face an upwind direction and around a second rotation axis orthogonal to the first rotation axis are installed with magnets 30, 31, and 32 for generating magnetic fields and magnetic sensors 35 to 37 for outputting signals for specifying a horizontal component and a vertical component of a wind direction by detecting the magnetic fields generated by the magnets.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an anemometer.

  As a measuring instrument of this type, a blade fixing plate that rotates so that the tip portion faces the windward direction, a support portion that rotatably supports the blade fixing plate, and a pair attached to both ends of the blade fixing plate There are anemometers including a freely openable / closable blade, a plurality of magnets that apply a repulsive force in a direction in which the blades open, and a azimuth magnet provided in a support portion (see, for example, Patent Document 1). .

JP 2006-292540 A

  By the way, in recent years, in order to improve the exhaust gas purification performance of an automobile traveling engine, as a traveling engine, an engine of an exhaust gas exhaust port provided in the front of the vehicle is changed to an engine of an exhaust gas exhaust port provided in the rear of the vehicle. It is changing. For this reason, in the engine room, heat is exhausted from the engine exhaust pipe or the like to the vehicle rear side of the engine, and this exhausted heat may cause problems in the equipment in the engine room. As a countermeasure, there is a desire to improve the air flow in the engine room and improve the cooling performance in the engine room.

  Therefore, in order to analyze the air flow in the engine room where the engine of the type that provides the exhaust gas exhaust port at the rear of the vehicle is analyzed, an anemometer that measures the wind direction in the engine room even when the hood of the automobile is closed is required. ing.

  However, the wind direction anemometer described in Patent Document 1 has a blade fixing plate that rotates in a horizontal direction so that the tip portion faces the windward direction, and the direction of the blade fixing plate and the direction of the wind are visually observed. For example, it is impossible to measure both the horizontal component and the vertical component of the wind direction by installing in a narrow space such as in an engine room with the hood closed.

  Moreover, as such an anemometer, it has a rotating shaft extending in the vertical direction and a horizontal axis extending in the horizontal direction, detects the horizontal component and the vertical component of the wind direction, and is configured by using a magnet and a coil. There is also one in which the wind speed is measured by a detector (for example, JP-A-2001-215241). However, this wind direction anemometer is configured to use a magnet and a coil for the wind direction vertical component detector and the wind direction vertical component detector, so it is difficult to reduce the size, for example, with the hood closed It is difficult to install in a narrow space such as in the engine room.

  The present invention has been made in view of the above problems, and an object thereof is to provide an anemometer that can be installed in a narrow space and can measure both a horizontal component and a vertical component of a wind direction.

  In order to achieve the above object, the invention described in claim 1 is directed to a fixing portion (20, 50) and a second rotation axis around the first rotation axis and perpendicular to the first rotation axis so as to face the windward direction. The movable part (10, 40) attached to the fixed part so as to be rotatable around the rotation axis of the motor, the magnet (30, 31, 32) that is arranged in the movable part and generates a magnetic field, and the magnet is arranged to face the magnet. And a magnetic sensor (35 to 37) that detects a magnetic field generated by the magnet and outputs a signal for specifying a horizontal component and a vertical component of the wind direction.

  According to such a configuration, the movable part attached to the fixed part is rotatable around the first rotation axis and around the second rotation axis perpendicular to the first rotation axis so as to face the windward direction. Magnets (30, 31, 32) that generate magnetic fields are arranged, and the magnetic field generated by the magnets is detected so as to face the magnets, and a signal for specifying the horizontal component and the vertical component of the wind direction is output. Since the sensors (35 to 37) are arranged, it is possible to provide an anemometer that can be installed in a narrow space and measures both the horizontal component and the vertical component of the wind direction.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is an external view of the anemometer which concerns on 1st Embodiment of this invention. It is a top view of the anemometer which concerns on 1st Embodiment of this invention. FIG. 3 is a cross-sectional view taken along line III-III shown in FIG. 2. FIG. 4 is a sectional view taken along line IV-IV shown in FIG. 2. It is a top view of a magnetic sensor. It is a figure for demonstrating arrangement | positioning of a spherical magnet and a magnetic sensor. It is the figure which showed the relationship between the rotation angle of the horizontal direction of a spherical magnet, the A-phase output of a magnetic sensor, and a B-phase output. It is a figure for demonstrating the A-phase output and B-phase output of a magnetic sensor when the rotating shaft of a spherical magnet inclines. It is a block block diagram of the anemometer which concerns on 1st Embodiment of this invention. It is an external view of the anemometer which concerns on 2nd Embodiment of this invention. It is a front view of the anemometer which concerns on 2nd Embodiment of this invention. It is sectional drawing along the XII-XII line | wire in FIG. It is sectional drawing along the XIII-XIII line | wire in FIG. It is a figure for demonstrating arrangement | positioning of a cylindrical magnet and a magnetic sensor. It is a figure for demonstrating a modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

(First embodiment)
An anemometer according to a first embodiment of the present invention will be described with reference to FIGS. This anemometer is used, for example, as a sensor for measuring the wind direction in an engine room (measurement space) of an automobile. The anemometer is configured as a small omnidirectional anemometer that can simultaneously measure the wind direction, wind speed, and temperature. As shown in FIG. 1, the anemometer has a fixed portion 20 and a movable portion 10.

  The fixed unit 20 includes a fixed stage 21 and a support member 22. The fixed stage 21 and the support member 22 are each integrally formed of resin.

  The fixed stage 21 corresponds to a bottom plate portion serving as a base, and the upper surface has a substantially square shape. One side of the upper surface of the fixed stage 21 is about 20 mm. The height from the bottom surface of the fixed stage 21 to the upper end of the movable part 10 is about 24 millimeters.

  As shown in FIG. 2, mounting screw holes 211 are formed at the four corners of the fixed stage 21. As shown in FIGS. 3 to 4, an opening 21 a is formed on the bottom surface side of the fixed stage 21, and a circuit board 80 on which a control unit 81 and the like to be described later are mounted is stored in the opening 21 a. ing. The circuit board 80 is provided with connector terminals 80a. A cover 21c is attached to the opening 21a.

  An opening hole 21 b that penetrates the side surface of the fixed stage 21 is formed on the side surface on the back surface side of the fixed stage 21. Connector terminals 80a mounted on the circuit board 80 are exposed to the outside through the opening holes 21b. A connection line (not shown) for connecting to the power source is connected to the connector terminal 80a. Power is supplied from the vehicle via this connection line.

  The support member 22 has a substantially cylindrical shape and is formed so as to extend in the vertical direction from the center of the upper surface of the fixed stage 21. Inside the support member 22, a hollow portion 22a extending in the axial direction and a magnetic sensor storage portion 22b for storing the magnetic sensor 35 are formed.

  A connection line 25a for connecting the magnetic sensor 35 and the circuit board 80 is disposed in the hollow portion 22a. A magnetic sensor 35 is stored in the magnetic sensor storage unit 22b. A protrusion 220 for supporting a U-shaped member 13 of the movable portion 10 to be described later is formed at the tip of the support member 22.

  Further, a wind speed sensor 60 and a temperature sensor 61 are provided at corners located at both ends on the front side of the fixed stage 21, respectively.

  The wind speed sensor 60 is composed of a hot-wire omnidirectional anemometer. A hot-wire anemometer is a precise measurement that does not depend on the direction of the wind. It is based on the temperature when the heating wire is exposed to the environment and energized, and the heat generated by the heating wire and cooling by the wind are balanced. Is possible. The wind speed sensor 60 detects the wind speed and outputs a signal indicating the detected wind speed to the control unit 81.

  The temperature sensor 61 detects the ambient air temperature and outputs a signal indicating the detected air temperature to the control unit 81. The temperature sensor 61 can be configured using, for example, a thermocouple, a thermistor, or the like.

  The movable part 10 includes a movable member 110 having a body part 111 and a blade part 112, a U-shaped member 13 and the like. The movable unit 10 is supported by the support member 22 of the fixed unit 20.

  The U-shaped member 13 is supported by the support member 22 of the fixed portion 20 so as to be rotatable around a first rotation axis (vertical axis) extending in the vertical direction. Specifically, the bottom surface of the U-shaped member 13 is formed with a hole portion 130 that fits into the protrusion 220 formed on the support member 22 of the fixing portion 20. A protrusion 220 formed on the support member 22 is fitted, and the U-shaped member 13 can be rotated around the vertical axis.

  The U-shaped member 13 can turn the movable member 110 about a second rotation axis (horizontal axis) orthogonal to the first rotation axis so as to sandwich the body portion 111 of the movable member 110 from both sides. To support. The U-shaped member 13 has two through holes 131 through which the male screw member 13a for rotatably supporting the body portion 111 is inserted. The male screw member 13 a is inserted into each through hole 131 formed in the U-shaped member 13 and then tightened into a screw hole portion (not shown) formed on the side surface of the body portion 111 of the movable member 110. Thus, the movable member 110 is supported by the U-shaped member 13 so as to be rotatable around the horizontal axis.

  The body part 111 is made of resin and has a rounded tip part 111 a and a magnet storage part 111 b for storing the spherical magnet 30. The magnet storage unit 111b stores a spherical magnet 30 that is magnetized in two hemispheres, S pole and N pole.

  Since the balance of the body portion 111 affects the measurement of the vertical component of the wind direction, the body portion 111 needs to be horizontal when there is no wind. For this reason, the spherical magnet 30 is disposed at a position serving as the center of gravity of the movable member 110, that is, a position serving as the center of balance between the front, rear, left and right of the movable member 110. The spherical magnet 30 is stored in the magnet storage unit 111b so that the boundary between the S pole and the N pole is orthogonal to the upper surface (detection surface) of the magnetic sensor 35 in a state where the body unit 111 is in a horizontal state. Has been.

  The blade portion 112 has a thin plate-like horizontal wing 112 a extending in the horizontal direction and a plurality of thin plate-like vertical wings 112 b extending from the horizontal wing 112 a in the vertical direction, and is fixed to the upper surface of the body portion 111.

  Next, the operation of the anemometer of the present embodiment will be described. The anemometer is installed such that the upper surface of the fixed stage 21 is horizontal with respect to the installation surface. Since the spherical magnet 30 is disposed at a position that becomes the center of gravity of the movable member 110, the body portion 111 is horizontal in a windless state.

  When the wind direction meter receives wind from the horizontal direction, the body portion 111 rotates around the vertical axis so that the front end portion 111a blows upwind while maintaining the body portion 111 in a horizontal state. At this time, the spherical magnet 30 also rotates around the vertical axis together with the body portion 111.

  Further, for example, when the wind direction changes from an obliquely upward direction, the body portion 111 rotates around the horizontal axis so that the tip end portion 111a blows upwind. At this time, the spherical magnet 30 is also rotated around the horizontal axis together with the body portion 111.

  Further, for example, when the wind direction changes from an obliquely downward direction, the body portion 111 rotates around the horizontal axis so that the tip end portion 111a blows upwind. At this time, the spherical magnet 30 is also rotated around the horizontal axis together with the body portion 111.

  The anemometer according to the present embodiment includes a spherical magnet 30 stored in the magnet storage portion 111 b of the body portion 111 and a magnetic sensor 35 disposed on the support member 22 so as to face the spherical magnet 30. ing. The magnetic sensor 35 is a rotation angle sensor that detects a rotation angle of the spherical magnet 30 by detecting a magnetic field generated by the spherical magnet 30 in a non-contact manner.

  The magnetic sensor 35 of this embodiment is configured by patterning a thin film (thin film ferromagnetic metal) of an alloy mainly composed of a ferromagnetic metal such as Ni (nickel) or Fe (iron) on a glass substrate. Yes. This thin film ferromagnetic metal has a characteristic that the resistance value changes depending on the intensity of an external magnetic field in a specific direction.

  The magnetic sensor 35 of the present embodiment includes a full bridge circuit in which four thin film ferromagnetic metals formed on a glass substrate plane are formed in a bridge shape, and a waveform for shaping a voltage waveform output from the full bridge circuit. It is configured as an IC-type AMR (Anisotropic-Magneto-Resistive) sensor in which a molded circuit (none of which is shown) is integrated into one chip. Such an IC type AMR sensor is a known sensor, and for example, KG-1402-61 (type name) manufactured by Hamamatsu Photoelectric Co., Ltd. can be used.

  FIG. 5 is a top view of the magnetic sensor 35. The magnetic sensor 35 has a rectangular parallelepiped shape. The magnetic sensor 35 is arranged such that the center line L in the longitudinal direction faces a predetermined direction (for example, the front of the anemometer). On the bottom surface of the magnetic sensor 35, two power supply terminals VCC, two ground terminals GND, a pair of A-phase output terminals + A and -A, and a pair of B-phase output terminals + B and -B are provided. Yes.

  The magnetic sensor 35 is mounted on a circuit board (not shown). This circuit board is connected to the circuit board 80 via the connection line 25a shown in FIG. A DC constant voltage is applied to each power supply terminal VCC from the circuit board 80 via the connection line 25a. Each ground terminal GND is grounded via a circuit board 80. The A-phase output terminals + A and -A and the B-phase output terminals + B and -B are connected to the control unit 81 mounted on the circuit board 80 via connection lines 25a.

  As shown in FIG. 6, the magnetic sensor 35 is disposed so as to face the dipole spherical magnet 30. When the spherical magnet 30 rotates and the magnetic field detected by the magnetic sensor 35 changes, outputs having different phases are output from the A-phase output terminals + A and -A and the B-phase output terminals + B and -B of the magnetic sensor 35, respectively. It has become so.

  FIG. 7 shows the phase A output from the phase A output terminals + A and −A of the magnetic sensor 35 when the spherical magnet 30 is rotated about the rotation axis J extending in the vertical direction as shown in FIG. The characteristics of the output (peak to peak output voltage) and the B phase output (peak to peak output voltage) output from the B phase output terminals + B and -B are shown. The horizontal axis of the characteristic diagram shown in FIG. 7 represents the angle θ1 formed by the longitudinal center line L of the magnetic sensor 35 shown in FIG. 5 and the direction of the applied magnetic field (applied magnetic field). 7 represents the peak-to-peak output voltage of the A-phase output and the B-phase output.

  When the spherical magnet 30 is rotated once (360 °) in the horizontal direction around the rotation axis J extending in the vertical direction, as shown in FIG. 7, each of the magnetic sensors 35 outputs an A-phase output (sin waveform) of one cycle. ) And B phase output (cos waveform).

  Therefore, from the A phase output output from the A phase output terminals + A and −A of the magnetic sensor 35 and the B phase output output from the B phase output terminals + B and −B, the center line L in the longitudinal direction of the magnetic sensor 35 and It is possible to specify the angle θ1 formed with the direction of the applied magnetic field (applied magnetic field) (that is, the horizontal rotation angle of the spherical magnet 30) θ1.

  The anemometer not only rotates about the vertical axis in which the body portion 111 extends in the vertical direction, but also rotates about a horizontal axis (second rotation axis) orthogonal to the first rotation axis. The wind direction is measured three-dimensionally.

  Thus, when the body part 111 rotates around the horizontal axis, for example, as shown in FIGS. 8A and 8B, the spherical magnet 30 is inclined and the rotation axis J is the upper surface of the magnetic sensor 35. Is not orthogonal to.

  Here, for example, as shown in FIG. 8A, when the rotation axis J of the spherical magnet 30 is tilted to the left side, the boundary between the S pole and the N pole of the apparent spherical magnet 30 viewed from the magnetic sensor 35. Shifts to the right. In other words, this is equivalent to the S-pole and N-pole boundary of the spherical magnet 30 shifted to the right.

  As shown in FIG. 8B, when the rotation axis J of the spherical magnet 30 is tilted to the right side, the apparent boundary between the S pole and the N pole of the spherical magnet 30 viewed from the magnetic sensor 35 is on the left side. shift. That is, this is equivalent to the S-pole and N-pole boundary of the spherical magnet 30 shifted to the left.

  As described above, when the spherical magnet 30 is inclined and the boundary between the S pole and the N pole of the spherical magnet 30 is shifted to the left and right, it is output from the A phase output terminals + A and -A of the magnetic sensor 35. The A phase output and the B phase output output from the B phase output terminals + B and -B are attenuated according to the degree of inclination of the rotation axis J of the spherical magnet 30.

  Specifically, the A-phase output output from the A-phase output terminals + A and -A of the magnetic sensor 35 and the B-phase output output from the B-phase output terminals + B and -B are the rotation axis J of the spherical magnet 30. Is perpendicular to the upper surface (detection surface) of the magnetic sensor 35, that is, the angle between the rotation axis J of the spherical magnet 30 and the vertical direction of the upper surface of the magnetic sensor 35 (that is, the spherical magnet 30). (Rotation angle in the vertical direction) of θ2 is 0 °, the state where the angle θ2 is 0 ° is the largest, and the angle θ2 is attenuated and decreases as the size of the angle θ2 increases, and is minimized when the size of the angle θ2 is 90 °.

  In this wind vane, a characteristic map is prepared that represents the relationship between the A-phase output and B-phase output of the magnetic sensor 35, the horizontal rotation angle θ1 of the spherical magnet 30 and the vertical rotation angle θ2 of the spherical magnet 30. Has been. Specifically, a map showing the relationship between the A-phase output and B-phase output of the magnetic sensor 35 and the horizontal rotation angle θ1 of the spherical magnet 30 as shown in FIG. A characteristic map is prepared by changing the rotation angle θ2 of each angle by a predetermined angle (for example, 5 °). This characteristic map is stored in the ROM of the control unit 81. The control unit 81 uses the characteristic map stored in the ROM to determine the horizontal rotation angle θ1 of the spherical magnet 30 and the vertical direction of the spherical magnet 30 from the A-phase output and B-phase output output from the magnetic sensor 35. Processing for specifying the rotation angle θ2 is performed.

  The control unit 81 in the present embodiment uses the A-phase output and B-phase output signals output from the magnetic sensor 35 to specify the horizontal rotation angle and the vertical rotation angle of the spherical magnet 30. That is, it is used as a signal for specifying the horizontal component and the vertical component of the wind direction. The control unit 81 specifies the horizontal rotation angle and the vertical rotation angle of the spherical magnet 30 from the A-phase output and the B-phase output output from the magnetic sensor 35 using the characteristic map stored in the ROM, Specify the horizontal and vertical components of the wind direction.

  Next, the block configuration of the anemometer will be described with reference to FIG. This anemometer includes a magnetic sensor 35, a wind speed sensor 60, a temperature sensor 61, a control unit 81, and a wireless transmission unit 82 corresponding to a transmission unit. This anemometer is adapted to wirelessly transmit various data such as detected wind direction, wind speed, and temperature to a personal computer (PC) 91, and is installed, for example, in an engine room (measurement space) of an automobile. . In addition, the wireless reception unit 90 and the personal computer (PC) 91 are disposed outside the automobile.

  The control unit 81 is configured as a computer including a CPU, a ROM, a RAM, an I / O, an A / D conversion unit, and the like, and the CPU performs various processes according to a program stored in the ROM. The control unit 81 includes a sensor control circuit that controls the wind speed sensor 60, an amplification circuit that amplifies a signal input from the temperature sensor 61, and the like.

  The wireless transmission unit 82 wirelessly transmits data to a predetermined communication partner. When the frame is input from the control unit 81, the wireless transmission unit 82 wirelessly transmits the frame according to a predetermined communication method.

  The control unit 81 performs a wind direction specifying process, a wind speed specifying process, and an air temperature specifying process in parallel. The wind direction specifying process is a process for specifying a horizontal component and a vertical component of the wind direction based on a signal input from the magnetic sensor 35. The wind speed specifying process is a process of specifying the wind speed based on a signal input from the wind speed sensor 60. The temperature specifying process is a process of specifying the temperature based on a signal input from the temperature sensor 61.

  In addition, the control unit 81 transmits the wind speed detected by the wind speed sensor 60 that detects the wind speed and the temperature detected by the temperature sensor 61 to the PC 91 that is an external device, together with information indicating the horizontal component and the vertical component of the wind direction. To implement.

  When the personal computer 91 receives a frame transmitted from the anemometer via the wireless receiving unit 90, the personal computer 91 extracts necessary data from the frame, and stores a horizontal component and a vertical component of the wind direction, a wind speed, and an air temperature in the storage unit. The process to memorize is performed.

  According to the configuration described above, the anemometer is arranged around the vertical axis (first rotation axis) and the horizontal axis (second rotation axis) orthogonal to the first rotation axis so as to face the windward direction. A movable part 40 that is rotatably attached to the fixed part 50, a spherical magnet 30 that is disposed on the movable part 40, generates a magnetic field, and is disposed to face the spherical magnet 30, and generates the spherical magnet 30. Since the magnetic sensor 35 for detecting the magnetic field to be output and outputting a signal for specifying the horizontal component and the vertical component of the wind direction is provided, it can be installed in a narrow space, and the horizontal component and the vertical component of the wind direction can be installed. An anemometer that can measure both can be provided.

  Moreover, this anemometer can measure both the horizontal component and the vertical component of the wind direction with one spherical magnet 30 and one magnetic sensor 35. For example, a plurality of magnets and a plurality of magnetic sensors are used. Compared to the case where the horizontal and vertical components of the wind direction are measured, both the horizontal and vertical components of the wind direction can be measured with a small number of parts, realizing a reduction in size and cost. be able to.

  In addition, since the present anemometer further includes a wind speed sensor 60 that detects the wind speed and a temperature sensor 61 that detects the air temperature, the wind direction, the wind speed, and the air temperature can be measured in a composite manner.

  In addition, the fixed unit 20 includes a fixed stage 21 that serves as a base, and the wind speed sensor 60 that detects the wind speed and the temperature sensor 61 that detects the temperature are provided on the fixed stage 21 so as not to contact the movable part. The wind speed and temperature can be detected without narrowing the movable range of the movable part 10.

  The wireless transmission unit 82 transmits information detected by the wind speed sensor 60 that detects the wind speed and the temperature sensor 61 that detects the air temperature to the PC 91 that is an external device, together with information indicating the horizontal component and the vertical component of the wind direction. Therefore, it is possible to measure the wind direction, wind speed, and temperature by installing an external device at a location away from the anemometer.

  Further, the fixed stage 21 has a quadrangular outer shape viewed from the vertical direction, and the wind speed sensor 60 and the temperature sensor 61 are disposed at the peripheral edge of the fixed stage 21. The influence on the wind direction which the movable part 10 receives by can be reduced.

  Moreover, since the wind speed sensor 60 and the temperature sensor 61 are arrange | positioned at the one side of the fixed stage 21, the measurement conditions of a wind speed and temperature can be arrange | equalized.

(Second Embodiment)
An anemometer according to a second embodiment of the present invention will be described with reference to FIGS. The anemometer of the first embodiment is configured such that one spherical magnet 30 is disposed on the movable portion 10 and one magnetic sensor 35 is disposed to face the spherical magnet 30 to detect the wind direction. However, the anemometer of the present embodiment detects the horizontal component of the wind direction with the magnet 31 and the magnetic sensor 36 corresponding to the first magnetic sensor, and the wind direction with the magnet 32 and the magnetic sensor 37 corresponding to the second magnetic sensor. It is configured to detect the vertical component of.

  The anemometer according to the present embodiment has a fixed part 50 and a movable part 40. The fixed unit 50 includes a fixed stage 51 and a guide member 52.

  The fixed stage 51 corresponds to a bottom plate portion serving as a base, and the upper surface is substantially square. The fixed stage 51 and the guide member 52 are each configured using a resin. The guide member 52 has two side plate portions 52a extending in the vertical direction from both side surfaces of the fixed stage 51, and a top plate portion 52b connecting the two side plate portions 52a. One side of the upper surface of the fixed stage 51 is about 15 mm. The height from the bottom surface of the fixed stage 51 to the top surface of the guide member 52 is about 17 millimeters. The fixed stage 51 is provided with a wind speed sensor 60.

  Further, a hole 521 is formed in the top plate portion 52 b of the guide member 52. In addition, a hole 511 is formed on the central upper surface of the fixed stage 51 positioned vertically below the hole 521.

  In addition, as shown in FIG. 12, the magnetic sensor 36 is stored immediately below the hole 511 formed in the central upper surface of the fixed stage 51. The magnetic sensor 36 has the same configuration as the magnetic sensor 35 of the first embodiment.

  The fixed stage 51 stores a circuit board (not shown). Further, a connection line 80b for supplying power is connected to the circuit board. Power is supplied from the vehicle via the connection line 80b.

  The movable part 40 has a frame-shaped frame member 41 corresponding to the first member and a movable member 42 corresponding to the second member. Projection portions 411 projecting to the outer peripheral side are formed at the left and right center of the upper surface of the frame member 41 and the left and right center of the lower surface.

  The protrusion 411 formed on the upper surface of the frame member 41 is inserted into the hole 521 formed in the top plate portion 52 b of the guide member 52, and the protrusion 411 formed on the lower surface of the frame member 41 is the fixed stage 51. Is inserted into a hole 511 formed on the upper surface of the center.

  The frame member 41 has a rotation axis passing through a hole portion 521 formed in the top plate portion 52b of the guide member 52 and a hole portion 511 formed in the central upper surface of the fixed stage 51, that is, a vertical axis (first axis extending in the vertical direction). Is supported by the guide member 52 of the fixed portion 50 so as to be rotatable around the rotation axis.

  In addition, a cylindrical stage 31 corresponding to a first magnet magnetized in two poles is provided on a fixed stage 51 positioned vertically below a protrusion 411 formed at the left and right center of the lower surface of the frame member 41. ing. That is, the magnetic sensor 36 stored in the fixed stage 51 is disposed so as to face the cylindrical magnet 31.

  Fixing portions 412 are provided on the left and right side surfaces of the frame member 41, respectively. Holes 413 are formed in the inner peripheral surface of each fixing portion 412. Further, the magnetic sensor 37 is stored in the right fixed portion 412 when the anemometer is viewed from the front side. The magnetic sensor 37 has the same configuration as the magnetic sensor 35 of the first embodiment.

  The movable member 42 includes a body part 421, a blade part 422, an arm part 423, and a rotation support member 424. The body part 421, the blade part 422, the arm part 423, and the rotation support member 424 are integrally formed of resin. Moreover, the trunk | drum 421 has the rounded front-end | tip part 421a.

  The blade portion 422 has a thin plate-like horizontal blade 422a extending in the horizontal direction and a thin plate-like vertical blade 422b extending from the horizontal blade 422a in the vertical direction. At the tips of the left and right horizontal wings 422a, arm portions 423 extending toward the tip portion 421a side of the trunk portion 421 are provided so as to be parallel to the trunk portion 421, respectively.

  A rotation support member 424 is provided at the tip of each arm portion 423. Each rotation support member 424 is formed with a protrusion 424 a that is inserted into a hole 413 formed on the inner peripheral side of the left and right side surfaces of the frame member 41. Each protrusion 424 a provided on each rotation support member 424 is inserted into each hole 413 formed on the inner peripheral side of the left and right side surfaces of the frame member 41, and the movable member 42 is supported by the frame member 41.

  The movable member 42 is supported by the frame member 41 so as to be rotatable about a rotation axis passing through each hole 413 formed on the left and right side surfaces of the frame member 41, that is, a horizontal axis (second rotation axis).

  Further, when the anemometer is viewed from the front side, a cylindrical magnet 32 corresponding to a second magnet magnetized in two poles is stored in the rotation support member 424 on the right side of the frame member 41. The cylindrical magnet 32 is disposed so as to face the magnetic sensor 37 stored in the right fixed portion 412.

  Since the balance of the body portion 421 affects the measurement of the vertical component of the wind direction, the movable member 42 is configured so that the body portion 421 is horizontal when there is no wind.

  Next, the operation of the anemometer of the present embodiment will be described. This anemometer is installed such that the upper surface of the fixed stage 51 is horizontal to the installation surface. The body portion 421 is horizontal when there is no wind. The anemometer is supplied with power from the vehicle via a connection line 80b.

  When the wind direction meter receives wind from the horizontal direction, the movable member 42 and the frame member 41 rotate around the vertical axis so that the front end 421a of the body 421 blows upwind while maintaining the body 421 in a horizontal state. Move. At this time, the cylindrical magnet 31 together with the frame member 41 also rotates around the vertical axis.

  Further, for example, when the wind direction changes from an obliquely upward direction, the movable member 42 rotates around the horizontal axis so that the front end portion 421a of the body portion 421 blows upwind. At this time, the cylindrical magnet 32 rotates around the horizontal axis together with the movable member 42.

  Further, for example, when the wind direction changes from an obliquely downward direction, the movable member 42 rotates vertically downward so that the front end portion 421a of the body portion 421 blows upwind. At this time, the cylindrical magnet 32 rotates around the horizontal axis together with the movable member 42.

  The anemometer of the present embodiment is configured to detect a horizontal component of the wind direction with a pair of magnets 31 and a magnetic sensor 36 and to detect a vertical component of the wind direction with a pair of magnets 32 and a magnetic sensor 37.

  As shown in FIG. 14, the magnetic sensors 36 and 37 of the anemometer of the present embodiment are configured so that the rotation axis J of the magnetic sensors 36 and 37 is orthogonal to the upper surfaces (detection surfaces) of the magnetic sensors 36 and 37, respectively. Be placed. In the anemometer of the present embodiment, when the cylindrical magnets 31 and 32 are rotated about the rotation axis J, the A-phase output terminals + A and −A of the magnetic sensors 36 and 37 are the same as those shown in FIG. A phase output is output, and B phase output is output from B phase output terminals + B and -B.

  Here, the magnetic sensor 36 detects the magnetic field of the cylindrical magnet 31 provided on the frame member 41 supported so as to be rotatable around the vertical axis, and outputs a signal for specifying the horizontal component of the wind direction. .

  The magnetic sensor 37 detects a magnetic field of the cylindrical magnet 32 provided on the movable member 42 supported to be rotatable around a horizontal axis, and outputs a signal for specifying the vertical component of the wind direction.

  The control unit 81 specifies the horizontal component and the vertical component of the wind direction from the A-phase output and the B-phase output output from the magnetic sensor 36, and the horizontal of the wind direction from the A-phase output and the B-phase output output from the magnetic sensor 37. Identify components and vertical components.

  In addition, the control unit 81 performs a wind speed specifying process for specifying the wind speed based on a signal input from the wind speed sensor 60. In addition, the control unit 81 performs a process of transmitting the wind speed detected by the wind speed sensor 60 to the PC 91 that is an external device together with information indicating the horizontal component and the vertical component of the wind direction.

  In this embodiment, the effect produced from the configuration common to the first embodiment can be obtained in the same manner as in the first embodiment.

  The movable part 40 includes a frame member 41 supported by the fixed part 50 so as to be rotatable around a vertical axis, and a movable member 42 supported by the frame member 41 so as to be rotatable around a horizontal axis. Yes. Further, the magnet is composed of a cylindrical magnet 31 disposed on the frame member 41 and a cylindrical magnet 32 disposed on the movable member 42, and the magnetic sensor is fixed to the fixing portion 50 so as to face the cylindrical magnet 31. A magnetic sensor 36 that detects a magnetic field generated by the cylindrical magnet 31 and outputs a signal for specifying a horizontal component of the wind direction; and a frame member 41 that is fixed to the cylindrical member 32 so as to face the cylindrical magnet 32. 32 is configured by a magnetic sensor 37 that detects a magnetic field generated by 32 and outputs a signal for specifying a vertical component of the wind direction.

  In this way, the horizontal and vertical components of the wind direction are separately obtained by the magnetic sensor 36 that outputs a signal for specifying the horizontal component of the wind direction and the magnetic sensor 37 that outputs a signal for specifying the vertical component of the wind direction. Since it detects, the horizontal component and vertical component of a wind direction can be detected accurately. It is also possible to simplify the processing and circuit configuration of the control unit 81.

  The wind direction anemometer described in the patent document (Japanese Patent Laid-Open No. 2001-215241) described in the column “Problems to be Solved by the Invention” includes a wind direction vertical component detector and a wind direction vertical component detector. Since it is configured to use a coil and a magnet having an iron core and windings, it is difficult to reduce the size, for example, it is difficult to install in a narrow space in an engine room with the hood closed. .

  In addition, since this wind direction anemometer has a method of detecting the electromotive force generated in the coil by electromagnetic induction, for example, in the absence of wind, the magnet is stationary and no electromotive force is generated in the coil. The direction in which it is facing cannot be detected.

  On the other hand, the anemometer according to the present embodiment outputs the A-phase output and the B-phase output from the magnetic sensor 35 while applying a constant voltage to the magnetic sensor 35. It is possible to detect the direction in which 111 is facing.

(Other embodiments)
In each of the above embodiments, an example in which the wind direction in the engine room (measurement space) of the automobile is detected has been described. However, a wind direction other than such a space can also be detected.

  In each of the above embodiments, an example in which the wind direction is detected by one anemometer has been shown. For example, a plurality of anemometers are installed in a narrow space such as in an engine room to analyze a complicated flow of air. It is also possible to do.

  Further, in each of the above embodiments, the power is supplied from the vehicle via the connection lines 80a and 80b. However, the battery may be made wireless by storing a battery for supplying the power.

  Moreover, in each said embodiment, although the control part 81 is performing the wind direction specific process, the wind speed specific process, and the temperature specific process using the signal output from the magnetic sensor 35, the wind speed sensor 60, and the temperature sensor 61, The controller 81 does not perform the wind direction, wind speed, and temperature identification processing, and wirelessly transmits data to the PC 91 via the wireless transmission unit 82, and then performs the wind direction identification processing, the wind speed identification processing, and the temperature identification processing on the software in the PC 91. You may make it perform.

  In each of the above embodiments, data is wirelessly transmitted from the anemometer to the PC 91 via the wireless transmission unit 82. However, the anemometer and the PC 91 are connected by wire, and the anemometer is connected to the PC 91 by wired communication. Data may be transmitted.

  Moreover, in the said 1st Embodiment, although the structure provided with the wind speed sensor 60 and the temperature sensor 61 was shown, the wind speed sensor 60 and the temperature sensor 61 do not necessarily need to be provided. In addition, as shown in FIG. 15, a triaxial geomagnetic sensor 62 that detects geomagnetism and outputs a signal indicating geomagnetism, and a triaxial tilt angle sensor that detects a tilt angle and outputs a signal indicating the tilt angle. The stationary stage 21 may be provided with a humidity sensor 64 that detects the humidity 63 and outputs a signal indicating the humidity. The geomagnetic sensor 62 may be configured using an acceleration sensor. Moreover, it is good also as a structure provided with at least 1 of these each sensors 60-64.

  In the second embodiment, the configuration including the wind speed sensor 60 is shown, but the wind speed sensor 60 is not necessarily provided. Further, at least one of the sensors 60 to 64 shown in FIG.

  In particular, in each of the above embodiments, by providing the geomagnetic sensor 62, it is possible to detect which direction (direction) the wind vane is installed to face. It is also possible to specify the direction (direction) of the wind direction based on the detection result of the geomagnetic sensor 62.

  Moreover, in each said embodiment, it can be detected whether this anemometer is installed inclining by providing the inclination-angle sensor 63. FIG. For example, when an anemometer is installed in a narrow space, it is possible that each anemometer cannot be installed horizontally. However, by providing the inclination angle sensor 63, the detection result of the inclination angle sensor 63 is included. Based on this, it is also possible to correct the wind direction.

  Further, in each of the above-described embodiments, at least one sensor among the wind speed sensor 60 that detects the wind speed, the temperature sensor 61 that detects the air temperature, and the humidity sensor 64 that detects the humidity does not come into contact with the movable parts 10 and 40. , 51 may be provided. The movable range of the movable parts 10 and 40 can be prevented from being narrowed.

  Further, in each of the above embodiments, at least one of the wind speed sensor 60, the temperature sensor 61, and the humidity sensor 64 may be disposed on the periphery of the bottom plate portions 21 and 41. Thereby, it is possible to reduce the influence on the wind direction by each sensor.

  The bottom plate portions 21 and 41 have a quadrangular outer shape on the top surface, and at least one of the wind speed sensor 60, the temperature sensor 61, and the humidity sensor 64 is arranged on one side of the square of the bottom plate portions 21 and 41. You may do it. Thereby, it is possible to arrange the measurement conditions of each sensor.

  In addition, this invention is not limited to above-described embodiment, In the range described in the claim, it can change suitably. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes. In each of the above embodiments, when referring to the material, shape, positional relationship, etc. of the constituent elements, etc., unless otherwise specified, or in principle limited to a specific material, shape, positional relationship, etc. The material, shape, positional relationship, etc. are not limited.

DESCRIPTION OF SYMBOLS 10, 40 Movable part 20, 50 Fixed part 30 Spherical magnet 31, 32 Cylindrical magnet 35-37 Magnetic sensor 40 Frame member 110, 42 Movable member 61 Wind speed sensor 62 Temperature sensor 63 Acceleration sensor 64 Humidity sensor 81 Control part 82 Wireless Transmitter

Claims (9)

A fixing part (20, 50);
A movable part (10, 40) attached to the fixed part so as to be rotatable about a first rotation axis and a second rotation axis perpendicular to the first rotation axis so as to face the windward direction;
Magnets (30, 31, 32) that are arranged in the movable part and generate a magnetic field;
The magnetic sensor (35-37) which is arrange | positioned facing the said magnet, and outputs the signal for detecting the magnetic field which the said magnet generate | occur | produces, and pinpointing the horizontal component and vertical component of a wind direction is provided. An anemometer. The magnet is composed of one spherical magnet (30),
The magnetic sensor is disposed in the fixed portion so as to face the spherical magnet, detects a magnetic field generated by the spherical magnet, and outputs a signal for specifying a horizontal component and a vertical component of the wind direction 1 The anemometer according to claim 1, characterized in that it is constituted by two magnetic sensors (35). The movable portion includes a first member (41) supported by the fixed portion so as to be rotatable around the first rotation axis;
A second member (42) supported by the first member so as to be rotatable about the second rotation axis,
The magnet includes a first magnet (31) disposed on the first member and a second magnet (32) disposed on the second member,
The magnetic sensor is fixed to the fixed portion so as to face the first magnet, detects a magnetic field generated by the first magnet, and outputs a signal for specifying a horizontal component of the wind direction ( 36) and a second magnetic sensor fixed to the first member so as to face the second magnet, and detecting a magnetic field generated by the second magnet and outputting a signal for specifying a vertical component of the wind direction The anemometer according to claim 1, comprising: (37).   The anemometer according to any one of claims 1 to 3, further comprising a geomagnetic sensor (62) for detecting geomagnetism and outputting a signal indicating geomagnetism.   The anemometer according to any one of claims 1 to 4, further comprising an inclination angle sensor (63) that detects an inclination angle of the fixed portion and outputs a signal indicating the inclination angle. The fixed portion has a base plate portion (21, 51) that serves as a base,
At least one of a wind speed sensor (60) for detecting wind speed, a temperature sensor (61) for detecting air temperature, and a humidity sensor (64) for detecting humidity is provided on the bottom plate portion so as not to contact the movable portion. The anemometer according to any one of claims 1 to 5, wherein the anemometer is provided.   At least one of a wind speed sensor (60) for detecting the wind speed, a temperature sensor (61) for detecting air temperature, and a humidity sensor (64) for detecting humidity, together with information indicating the horizontal and vertical components of the wind direction. The anemometer according to claim 6, further comprising a transmission means (82) for transmitting the detected information to an external device (91).   The anemometer according to claim 6 or 7, wherein at least one of the wind speed sensor, the temperature sensor, and the humidity sensor is disposed on a peripheral edge of the bottom plate. The bottom plate portion has a quadrangular outer shape on the top surface,
A wind speed sensor for detecting the wind speed, a temperature sensor for detecting the temperature, and a humidity sensor for detecting the humidity.
The at least two sensors among the wind speed sensor, the temperature sensor, and the humidity sensor are disposed on one side of the quadrilateral of the bottom plate portion. An anemometer.

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