Low wind speed measuring device

Abstract

The utility model discloses a low wind speed measuring device which comprises a testing device body, a supporting base is installed on the lower inner wall of the testing device body, a rotating base is fixedly connected to the upper side wall of the supporting base, a transmission rod is rotatably connected to the interior of the rotating base, and a protective cushion cover is fixedly connected to the outer side wall of the transmission rod. Four groups of stress sheets are mounted between the middle part of the outer side wall of the transmission rod and the protective pad sleeve, and the upper end of the transmission rod is fixedly connected with a rotating seat; the upper end of the rotating seat is fixedly connected with a transmission force arm, and the upper side wall of one end, away from the rotating seat, of the transmission force arm is provided with a detection rod. According to the utility model, when wind blows the force transmission wind bag to float up, torsion pressure is applied to the upper end of the detection rod, the torsion causes small deformation of the transmission rod, then the strain gauge attached to the transmission rod also deforms, the strain gauge transmits a torque signal to the signal conversion assembly after deformation, the wind speed can be judged, and the measurement error is small.

Description

Technical Field

[0001] This utility model relates to the field of wind speed measurement technology, and in particular to a low wind speed measuring device. Background Technology

[0002] When measuring atmospheric wind speed parameters or wind speed parameters in closed pipelines and mines, the existing technology uses the method of laying out wind speed tubes at multiple points for measurement. This method has many installation points, many points that need to be sealed, and it is not suitable for measuring low wind speeds.

[0003] Measuring low wind speeds, especially high-precision measurements of ultra-low wind speeds in the range of 1m / s to 15m / s, has always been a technical challenge due to the low and unstable nature of wind speeds. Currently, the differential pressure anemometer method is commonly used, but it has a relatively large measurement error. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art and provide a low wind speed measuring device. The device is equipped with a force transmission wind bag, which can float when the wind blows. The hollow frustum-shaped force transmission wind bag can effectively amplify the pressure transmitted by the wind to the detection rod, thereby effectively improving the measurement range of the device.

[0005] The device is equipped with a transmission rod and a detection rod. When the wind blows the force transmission bag up, it will exert a torsional pressure on the upper end of the detection rod. The torsion will cause a slight deformation of the transmission rod, which in turn will cause the strain gauge that is in contact with the transmission rod to deform. After the strain gauge is deformed, it will send a torque signal to the signal conversion component, which can then determine the wind speed with a small measurement error.

[0006] This utility model also provides a low wind speed measuring device, comprising: a testing device body, a support base installed on the lower inner wall of the testing device body, a rotating base fixedly connected to the upper side wall of the support base, a transmission rod rotatably connected inside the rotating base, a protective pad fixedly connected to the outer side wall of the transmission rod, four sets of stress plates installed between the middle of the outer side wall of the transmission rod and the protective pad, and a rotating seat fixedly connected to the upper end of the transmission rod.

[0007] A power transmission arm is fixedly connected to the upper end of the rotating seat. A detection rod is located on the upper side wall of the end of the power transmission arm away from the rotating seat. A rotating sleeve is rotatably connected to the outer side wall of the upper end of the detection rod. A force transmission air bag is fixedly connected to the rotating sleeve by a connecting rope. The force transmission air bag is configured as a hollow frustum.

[0008] According to the low wind speed measuring device, the lower outer wall of the rotating sleeve is provided with an angle scale, and a calibration plate is fixedly connected to the upper end of the outer wall of the detection rod. The calibration plate cooperates with the rotating sleeve, and the rotation angle of the rotating sleeve can be read more easily through the calibration plate.

[0009] According to the aforementioned low wind speed measuring device, a control main board is installed on the right inner wall of the main body of the testing device for controlling various electrical components in the device.

[0010] According to the aforementioned low wind speed measuring device, a calculation module and a signal conversion module are installed on the left side wall of the control motherboard. The signal conversion module is connected to the stress plate and consists of an AD conversion module and an ESP microcontroller.

[0011] According to the aforementioned low wind speed measuring device, the transmission rod is perpendicular to the rotating seat.

[0012] According to the aforementioned low wind speed measuring device, the transmission rod and the detection rod are parallel to each other.

[0013] According to the aforementioned low wind speed measuring device, a display screen is installed on the front side wall of the main body of the testing device to facilitate the display of signals generated by the control motherboard.

[0014] According to the aforementioned low wind speed measuring device, an input keyboard is installed on the front side wall of the main body of the testing device for inputting the rotation angle of the rotating sleeve.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the structure of a low wind speed measuring device according to the present invention;

[0018] Figure 2 This is a cross-sectional schematic diagram of a low wind speed measuring device according to the present invention;

[0019] Figure 3 This is a front view of a low wind speed measuring device according to the present invention;

[0020] Figure 4 This is a top view schematic diagram of a low wind speed measuring device according to the present invention.

[0021] Legend:

[0022] 1. Main body of the testing device; 2. Input keyboard; 3. Display screen; 4. Rotating base; 401. Power transmission arm; 5. Detection rod; 501. Rotating sleeve; 502. Calibration plate; 6. Force transmission air bag; 601. Connecting rope; 7. Support base; 701. Rotating base; 8. Transmission rod; 801. Stress plate; 802. Protective pad; 9. Control main board; 901. Calculation module; 902. Signal conversion module. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] Reference Figure 1-4 This utility model provides a low wind speed measuring device, which includes: a testing device body 1, a support base 7 installed on the lower inner wall of the testing device body 1, a rotating base 701 fixedly connected to the upper side wall of the support base 7, a transmission rod 8 rotatably connected inside the rotating base 701, a protective pad 802 fixedly connected to the outer side wall of the transmission rod 8, four sets of stress plates 801 installed between the middle of the outer side wall of the transmission rod 8 and the protective pad 802, a rotating seat 4 fixedly connected to the upper end of the transmission rod 8, the transmission rod 8 and the rotating seat 4 being perpendicular to each other, and the transmission rod 8 and the detection rod 5 being parallel to each other.

[0026] A power transmission arm 401 is fixedly connected to the upper end of the rotating seat 4. A detection rod 5 is located on the upper side wall of the end of the power transmission arm 401 away from the rotating seat 4. A rotating sleeve 501 is rotatably connected to the outer side wall of the upper end of the detection rod 5. A power transmission air bag 6 is fixedly connected to the rotating sleeve 501 through a connecting rope 601. An angle scale is provided on the outer side wall of the lower end of the rotating sleeve 501. A calibration plate 502 is fixedly connected to the upper end of the outer side wall of the detection rod 5. The calibration plate 502 cooperates with the rotating sleeve 501, and the rotation angle of the rotating sleeve 501 can be read more easily through the calibration plate 502.

[0027] The right inner wall of the main body 1 of the testing device is equipped with a control motherboard 9, which is used to control the various electrical components in the device. The left side wall of the control motherboard 9 is equipped with a calculation module 901 and a signal conversion module 902. The signal conversion module 902 is connected to the stress plate 801 and consists of an AD conversion module and an ESP32 microcontroller. The front side wall of the main body 1 of the testing device is equipped with a display screen 3, which is used to display the signals generated by the control motherboard. The front side wall of the main body 1 of the testing device is equipped with an input keyboard 2, which is used to input the rotation angle of the rotating sleeve 501.

[0028] All electrical components mentioned in this article are electrically connected to an external power source.

[0029] Working principle: When the device is placed in an open area, the wind will cause the force transmission bag 6 to float up. When the force transmission bag 6 floats up, the air inlet will face the wind direction. The wind direction can be obtained by reading the corresponding angle scale on the rotating sleeve 501 through the calibration plate 502. The angle scale is also input through the input keyboard 2. When the wind blows the force transmission bag 6 up, it will give the upper end of the detection rod 5 a torsional pressure. The torsion will cause the transmission rod 8 to deform slightly, which will cause the strain gauge 801 in contact with the transmission rod 8 to deform as well. After the strain gauge 801 deforms, it will send a torque signal to the signal conversion component 902. The calculation module 901 calculates the torque signal and the angle scale to obtain the pressure on the upper end of the detection rod 5. The control motherboard 9 can determine the wind speed by the pressure received on the upper end of the detection rod 5 and inversely calculate the pressure on the detection rod 5 by different wind speeds.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A low wind speed measuring device, characterized in that, include: The main body of the testing device (1) has a support base (7) installed on the lower inner wall of the main body of the testing device (1). A rotating base (701) is fixedly connected to the upper side wall of the support base (7). A transmission rod (8) is rotatably connected inside the rotating base (701). A protective pad (802) is fixedly connected to the outer side wall of the transmission rod (8). Four sets of stress plates (801) are installed between the middle of the outer side wall of the transmission rod (8) and the protective pad (802). A rotating seat (4) is fixedly connected to the upper end of the transmission rod (8). The upper end of the rotating seat (4) is fixedly connected to a power transmission arm (401). The upper side wall of the end of the power transmission arm (401) away from the rotating seat (4) is connected to a detection rod (5). The upper outer side wall of the detection rod (5) is rotatably connected to a rotating sleeve (501). The rotating sleeve (501) is fixedly connected to a power transmission bag (6) via a connecting rope (601).

2. The low wind speed measuring device according to claim 1, characterized in that, The lower outer wall of the rotating sleeve (501) is provided with an angular scale, and the upper end of the outer wall of the detection rod (5) is fixedly connected with a calibration plate (502), which cooperates with the rotating sleeve (501).

3. The low wind speed measuring device according to claim 1, characterized in that, The control motherboard (9) is installed on the right inner wall of the main body (1) of the test device.

4. A low wind speed measuring device according to claim 3, characterized in that, The left side wall of the control motherboard (9) is equipped with a computing module (901) and a signal conversion module (902).

5. A low wind speed measuring device according to claim 1, characterized in that, The transmission rod (8) is perpendicular to the rotating seat (4).

6. A low wind speed measuring device according to claim 1, characterized in that, The transmission rod (8) and the detection rod (5) are parallel to each other.

7. A low wind speed measuring device according to claim 1, characterized in that, The display screen (3) is installed on the front side wall of the main body (1) of the test device.

8. A low wind speed measuring device according to claim 1, characterized in that, The front side wall of the main body (1) of the test device is equipped with an input keyboard (2).

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