CN111735515A - Wind barrel air quantity sensor based on inclination angle identification and use method thereof - Google Patents
Wind barrel air quantity sensor based on inclination angle identification and use method thereof Download PDFInfo
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- CN111735515A CN111735515A CN202010625048.7A CN202010625048A CN111735515A CN 111735515 A CN111735515 A CN 111735515A CN 202010625048 A CN202010625048 A CN 202010625048A CN 111735515 A CN111735515 A CN 111735515A
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- air duct
- air
- sensor
- quantity sensor
- inclination angle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/18—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
Abstract
The invention belongs to the technical field of mine construction, and particularly relates to an air duct air quantity sensor based on inclination angle identification, which comprises: the suspension structure is arranged at one end of the suspension structure in a suspension mode relative to the fixed point; the flexible lantern ring surrounds the air duct and is connected with the bottom of the suspension structure; at least one sensor, the laminating is installed in flexible lantern ring surface, and sets up according to setting for the distance with the suspended structure bottom, and the sensor is used for detecting the angle change of dryer. By the technical scheme, the problems of low air pressure at the tail end of the soft air duct and vibration of the air duct are effectively solved, the detection accuracy is high, and the production, debugging, installation and maintenance are convenient. Meanwhile, the invention also discloses a use method of the air duct air quantity sensor based on the inclination angle identification, and the use method has the same technical effect.
Description
Technical Field
The invention belongs to the technical field of mine construction, and particularly relates to an air duct air quantity sensor based on inclination angle identification and a use method thereof.
Background
The gas can be discharged along with the coal mine underground mining process, and the gas can explode after reaching a certain concentration. In consideration of safety production, fresh air is required to be sent into the excavation face by using the air duct to replace gas generated by the excavation face, so that the safety of personnel and equipment is protected.
Wherein, dryer replacement effect need detect through dryer air sensor, and in the colliery safety monitoring field, dryer air sensor installs at the dryer end, judges the structural integrity of tunnel dryer.
Traditional staple bolt formula dryer air sensor is a comparatively conventional sensor, and at present, this type of sensor is iron stand staple bolt formula almost, adopts the link to hang the hoist and mount, rides and strides on soft dryer, and the dryer props up the iron stand when windy, and sensor magnet is close to the host computer and makes inside tongue tube switch on, and when the dryer does not have the wind, soft dryer does not have the wind, and the iron stand draws in, and sensor magnet keeps away from the host computer, and the tongue tube breaks off. When detecting wind and no wind in the mine air duct, because the wind pressure of the tail end air duct is weaker, the left-right swing exists, the wrong judgment exists when the hoop type air duct air quantity sensor detects the wind and no wind of the air duct, the fan is closed, the air duct air quantity sensor participates in wind power locking control, the fan is powered off when the air duct air quantity sensor detects a wrong signal, a worker stops working, and the mining efficiency is influenced.
In view of the above problems, the present inventors have conducted research and innovation based on practical experience and professional knowledge that is abundant over many years in engineering application of such products, and together with the application of theory, to create an air duct air volume sensor based on tilt angle recognition and a method for using the same, so that the air duct air volume sensor has higher practicability.
Disclosure of Invention
The invention aims to provide an air duct air quantity sensor based on inclination angle identification, so that the problems in the background technology are effectively solved. Meanwhile, the invention also claims a using method of the sensor, and the same technical effects are achieved.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an dryer air volume sensor based on angle of inclination discernment, includes:
the suspension structure is arranged at one end of the suspension structure in a suspension mode relative to the fixed point;
the flexible lantern ring surrounds the air duct and is connected with the bottom of the suspension structure;
at least one sensor, the laminating is installed in flexible lantern ring surface, and sets up according to setting for the distance with the suspended structure bottom, the sensor is used for right the angular variation of dryer detects.
Further, two sensors are arranged at equal intervals with the suspension structure connecting points.
Further, the flexible collar comprises two parts, a first part connected to the suspension structure for mounting the sensor.
Further, the first portion is equally long on both sides of the suspension structure attachment point.
Furthermore, the suspension structure comprises a flexible line body and at least one fixing ring, a ring body is arranged at the bottom of the flexible line body and connected with the fixing ring to form a chain body structure, and the fixing ring positioned at the bottommost part is connected with the flexible lantern ring.
Further, the flexible lantern ring is provided with a disconnection position, and two end parts of the disconnection position are respectively connected with two sides of the sensor.
A use method of an air duct air quantity sensor based on inclination angle identification is attached to an air duct, angle change synchronous with the air duct is achieved, and the inclination angle of the air duct is calculated through the component of the gravity acceleration in an XYZ axis.
Further, the method for calculating the inclination angle of the air duct is as follows:
gravity component G in XYZ axis by gravity accelerationxout，GYoutAnd GZoutα, β and γ are calculated;
wherein alpha is an included angle formed by an X axis of the air duct air quantity sensor and an X axis of a reference coordinate; beta is an included angle formed by the Y axis of the air duct air quantity sensor and the Y axis of the reference coordinate; and gamma is an included angle formed by the Z axis of the air duct air quantity sensor and the Z axis of the reference coordinate, and the inclination change of the air duct is described through the included angles alpha, beta and gamma.
Further, the wind or no-wind state of the wind cylinder is judged by comparing at least one of the included angles alpha, beta and gamma with a threshold value.
Further, the air duct air quantity sensors are symmetrically used in pairs on two sides of the air duct about the longitudinal plane.
Through the technical scheme of the invention, the following technical effects can be realized:
by the technical scheme, the problems of low air pressure at the tail end of the soft air duct and vibration of the air duct are effectively solved, the detection accuracy is high, and the production, debugging, installation and maintenance are convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the structure and installation of an air duct air quantity sensor based on inclination angle identification;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is an enlarged view of a portion of FIG. 1 at C;
fig. 5(a) and (b) are schematic diagrams of the principle of detecting the inclination angle of the air duct air quantity sensor, which are schematic diagrams after reference attitude and attitude change, respectively;
FIG. 6 is a schematic diagram of the detection principle of the wind barrel air volume sensor;
reference numerals: the device comprises a suspension structure 1, a flexible wire body 11, a fixing ring 12, a ring body 13, a sensor 2, a cable 4, a flexible lantern ring 5, a first part 51, an end part 52 and an air duct 6.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in FIGS. 1-4, an air duct air quantity sensor based on inclination angle identification comprises: one end of the suspension structure 1 is arranged in a suspension mode relative to a fixed point; the flexible lantern ring 5 surrounds the air duct 6 and is connected with the bottom of the suspension structure 1; at least one sensor 2, the laminating is installed in 5 surfaces of flexible lantern ring, and sets up according to setting for the distance with 1 bottoms of suspended structure, and sensor 2 is used for detecting the angular variation of dryer 6.
The sensor 2 can select a three-axis accelerometer, wherein a three-axis accelerometer chip is arranged, the sensor is only influenced by gravity in a static state, and the inclination angle of the object can be calculated by the component of the gravity acceleration in the XYZ axis after the angle position of the sensor is changed. In the implementation process, when the three-axis accelerometer chip is horizontally placed, the X axis and the Y axis are respectively parallel to the horizontal plane, and the direction of the Z axis is opposite to the direction of gravity and is vertical to the horizontal plane; when describing the tilt change of the chip, the coordinate system of three axes is taken as a reference coordinate, as shown in fig. 5(a), and when the chip is tilted, the X-axis, Y-axis and Z-axis orientations are changed, as shown in fig. 5 (b).
In order to make the detection more accurate, sensor 2 preferably sets up two, and with 1 tie point equidistant setting of suspended structure, in this preferred scheme, the comparison of data between two sensors 2 can regard as the benchmark that detects the accuracy and judge, and can guarantee that two sensor 2's angle change has the symmetry for the equidistant mode of setting of tie point under normal condition to be convenient for compare and calculate.
In order to adapt the air volume of the whole air duct to air ducts 6 with various sizes, as a preference of the above embodiment, the flexible collar 5 comprises two parts, wherein the first part 51 connected with the suspension structure 1 is used for mounting the sensor 2, the standardized structure can be realized, and the second part connected with the first part 51 has no mounting and connecting relation, so that the flexible collar can be flexibly selected according to different diameters of the air duct 6, and the material is convenient to be arranged differently from the first part 51.
Also for the sake of detection accuracy, the lengths of the first portions 51 on both sides of the connection point of the suspension structure 1 are set equally, so that the pressing force thereof against the wind tunnel 6 maintains the same on both sides of the connection point, and also so that the two sensors 2 can obtain the same installation environment.
In the using process, because the air duct 6 has flexibility, axial angle change is easy to occur in the using process, in order to avoid the influence of the change on the detection of the sensor 2, preferably, when the axial angle change occurs to the air duct 6, the sensor 2 can synchronously rotate along with the air duct, therefore, in the preferred scheme, the suspension structure 1 comprises a flexible line body 11 and at least one fixing ring 12, the bottom of the flexible line body 11 is provided with a ring body 13 which is connected with the fixing ring 12 to form a chain body structure, the fixing ring 12 positioned at the bottommost part is connected with the flexible sleeve ring 5, and through the arrangement of the chain body structure, the air duct 6 can enable the sensor 2 to flexibly rotate along with the flexible sleeve when the axial rotation occurs, so as to ensure the accuracy of detection, and meanwhile, as shown in fig. 1, the fixing ring 12 can also be used for fixing cables.
In the use, in order to make sensor 2 more sensitive to the perception of dryer 6 shape change, flexible lantern ring 5 is provided with the disconnection position, and both ends 52 of disconnection position are connected with sensor 2 both sides respectively to make sensor 2 because disconnection position and directly laminate with dryer 6, avoid the influence that the shape change of flexible lantern ring 5 produced it.
A use method of an air duct air quantity sensor based on inclination angle identification is attached to an air duct 6, angle change synchronous with the air duct 6 is achieved, and the inclination angle of the air duct 6 is calculated through the component of the gravity acceleration in an XYZ axis.
The method for calculating the inclination angle of the air duct 6 comprises the following steps:
gravity component G in XYZ axis by gravity accelerationxout，GYoutAnd GZoutα, β and γ are calculated;
wherein alpha is an included angle formed by an X axis of the air duct air quantity sensor and an X axis of a reference coordinate; beta is an included angle formed by the Y axis of the air duct air quantity sensor and the Y axis of the reference coordinate; and gamma is an included angle formed by the Z axis of the air duct air quantity sensor and the Z axis of the reference coordinate, and the inclination change of the air duct 6 is described through the included angles alpha, beta and gamma.
The soft wind tube 6 is obviously deformed on the section of the wind tube when in ventilation, the wind tube is O-shaped when in wind, the wind tube is I-shaped when in no wind, the three-axis accelerometer chip only needs to detect the inclination angle change of the section of the wind tube 6 in application, and the wind or no-wind state of the wind tube 6 is judged by comparing at least one of the included angles alpha, beta and gamma with a threshold value.
In a preferred embodiment, the wind tunnel air volume sensor is symmetrically used in pairs on both sides of the wind tunnel 6 with respect to the longitudinal plane, as shown in fig. 6, taking the sensor 2 on the left side as the main sensor and the sensor 2 on the right side as the auxiliary sensor, for example, the main sensor has a reference coordinate system X1 ' Y1 ' Z1 ', Y1 ' has an axis direction parallel to the wind tunnel 6 direction and an inward direction, the Z1 ' has an axis direction parallel to the gravity direction and a reference coordinate system X2 ' Y2 ' Z2 ' in the auxiliary sensor, the Y2 ' has an axis direction parallel to the wind tunnel 6 direction and an outward direction, and the Z2 ' has an axis direction parallel to the gravity direction, wherein β 1 is an angle between the X1 axis of the main sensor and the gravity acceleration g, β 2 is an angle between the X2 axis of the auxiliary sensor and the gravity acceleration g, α 1 is an angle between the Z1 axis of the main gauge head and the reference axis Z1 ', and α 2 is an angle between the Z8536, alpha 1 and beta 1 are complementary angles with each other, and alpha 2 and beta 2 are complementary angles with each other.
The tilt angle β is β 1+ β 2
β1＝90°-α1，β2＝90°-α2
Wherein G isXout，X1，GYout，Y1，GZout，Z1Represents the components of gravity g on the X1, Y1 and Z1 axes; gXout，X2，GXout，Y2，GXout，Z2Representing the components of gravity g on the X2, Y2, and Z2 axes.
After the sensor 2 calculates the value of the inclination angle beta, the value is compared with a set threshold value, and the wind and no-wind state of the wind barrel can be judged.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides an dryer air volume sensor based on angle of inclination discernment which characterized in that includes:
a suspension structure (1) with one end arranged in a suspension way relative to a fixed point;
the flexible lantern ring (5) surrounds the air duct (6) and is connected with the bottom of the suspension structure (1);
at least one sensor (2), the laminating install in flexible lantern ring (5) surface, and with suspension structure (1) bottom sets up according to setting for the distance, sensor (2) are used for to the angular variation of dryer (6) detects.
2. The wind drum air quantity sensor based on inclination angle identification is characterized in that two connecting points of the sensor (2) and the suspension structure (1) are arranged at equal intervals.
3. The wind tunnel air volume sensor based on inclination angle identification of claim 2, characterized in that the flexible collar (5) comprises two parts, a first part (51) connected with the suspension structure (1) is used for mounting the sensor (2).
4. The wind tunnel air volume sensor based on inclination angle identification of claim 3, characterized in that the lengths of the first part (51) at two sides of the suspension structure (1) connecting point are set equally.
5. The wind cone air volume sensor based on inclination angle identification of claim 1, wherein the suspension structure (1) comprises a flexible wire body (11) and at least one fixing ring (12), a ring body (13) is arranged at the bottom of the flexible wire body (11) and connected with the fixing ring (12) to form a chain body structure, and the fixing ring (12) at the bottommost is connected with the flexible sleeve ring (5).
6. The wind drum air quantity sensor based on inclination angle identification of claim 1, characterized in that the flexible collar (5) is provided with a cut-off position, and two ends (52) of the cut-off position are respectively connected with two sides of the sensor (2).
7. The use method of the air duct air quantity sensor based on the inclination angle identification is characterized in that the air duct air quantity sensor is attached to an air duct (6), synchronous angle change with the air duct (6) is realized, and the inclination angle of the air duct (6) is calculated through the component of the gravity acceleration in the XYZ axis.
8. The use method of the air duct air quantity sensor according to claim 7, characterized in that the calculation method of the inclination angle of the air duct (6) is as follows:
gravity component G in XYZ axis by gravity accelerationxout，GYoutAnd GZoutα, β and γ are calculated;
wherein alpha is an included angle formed by an X axis of the air duct air quantity sensor and an X axis of a reference coordinate; beta is an included angle formed by the Y axis of the air duct air quantity sensor and the Y axis of the reference coordinate; gamma is an included angle formed by the Z axis of the air duct air quantity sensor and the Z axis of the reference coordinate, and the inclination change of the air duct (6) is described through the included angles alpha, beta and gamma.
9. The use method of the air duct air quantity sensor according to claim 8, characterized in that the wind or no wind state of the air duct (6) is judged by comparing at least one of the included angles α, β and γ with a threshold value.
10. The use method of the air duct air quantity sensor according to any one of claims 7 to 9, characterized in that the air duct air quantity sensor is symmetrically used in pairs on two sides of the air duct (6) with respect to a longitudinal plane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010625048.7A CN111735515B (en) | 2020-07-01 | 2020-07-01 | Wind barrel air quantity sensor based on inclination angle identification and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010625048.7A CN111735515B (en) | 2020-07-01 | 2020-07-01 | Wind barrel air quantity sensor based on inclination angle identification and use method thereof |
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| CN111735515A true CN111735515A (en) | 2020-10-02 |
| CN111735515B CN111735515B (en) | 2022-04-15 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5400639A (en) * | 1992-09-04 | 1995-03-28 | Ford Motor Company | Carrier for mass air flow production line |
| CN201402162Y (en) * | 2009-04-10 | 2010-02-10 | 绿十字(中国)生物制品有限公司 | Lift-type air flow hood |
| CN105589576A (en) * | 2014-10-29 | 2016-05-18 | 深圳Tcl新技术有限公司 | Action direction identification method and device |
| CN107989643A (en) * | 2017-12-13 | 2018-05-04 | 大同煤矿集团有限责任公司 | Wind tunnel sensor |
| CN208567984U (en) * | 2018-08-22 | 2019-03-01 | 大同煤矿集团有限责任公司 | A kind of mining ventilating tunnel air flow sensor device |
| CN110196085A (en) * | 2019-05-06 | 2019-09-03 | 光力科技股份有限公司 | Air duct installed body and the wind tube wind quantity sensor for using the mechanism |
| CN209764166U (en) * | 2019-05-06 | 2019-12-10 | 光力科技股份有限公司 | Air duct clamping mechanism and air duct air quantity sensor using same |
-
2020
- 2020-07-01 CN CN202010625048.7A patent/CN111735515B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5400639A (en) * | 1992-09-04 | 1995-03-28 | Ford Motor Company | Carrier for mass air flow production line |
| CN201402162Y (en) * | 2009-04-10 | 2010-02-10 | 绿十字(中国)生物制品有限公司 | Lift-type air flow hood |
| CN105589576A (en) * | 2014-10-29 | 2016-05-18 | 深圳Tcl新技术有限公司 | Action direction identification method and device |
| CN107989643A (en) * | 2017-12-13 | 2018-05-04 | 大同煤矿集团有限责任公司 | Wind tunnel sensor |
| CN208567984U (en) * | 2018-08-22 | 2019-03-01 | 大同煤矿集团有限责任公司 | A kind of mining ventilating tunnel air flow sensor device |
| CN110196085A (en) * | 2019-05-06 | 2019-09-03 | 光力科技股份有限公司 | Air duct installed body and the wind tube wind quantity sensor for using the mechanism |
| CN209764166U (en) * | 2019-05-06 | 2019-12-10 | 光力科技股份有限公司 | Air duct clamping mechanism and air duct air quantity sensor using same |
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