CN109230756B - Linear ultrasonic deviation rectifying sensor and deviation rectifying method for deviation material - Google Patents
Linear ultrasonic deviation rectifying sensor and deviation rectifying method for deviation material Download PDFInfo
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- CN109230756B CN109230756B CN201810997176.7A CN201810997176A CN109230756B CN 109230756 B CN109230756 B CN 109230756B CN 201810997176 A CN201810997176 A CN 201810997176A CN 109230756 B CN109230756 B CN 109230756B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/032—Controlling transverse register of web
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
- B65H2511/24—Irregularities, e.g. in orientation or skewness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/113—Size
- B65H2701/1133—Size of webs
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
The invention discloses a linear ultrasonic deviation rectifying sensor and a deviation material deviation rectifying method using the same, wherein the deviation rectifying sensor comprises a U-shaped shell (1), the shell (1) comprises a deviation distance measuring mechanism, the deviation distance measuring mechanism comprises a transmitting plate (2) and a receiving plate (3), and the transmitting plate (2) and the receiving plate (3) are symmetrically arranged; a square ultrasonic transmitting head (21) is arranged on the transmitting plate (2); the receiving plate (3) is provided with a square ultrasonic receiving head (31). The invention can accurately measure the material deviation distance so as to improve the deviation rectifying precision of the deviation rectifying sensor.
Description
Technical Field
The invention relates to a linear ultrasonic deviation rectifying sensor and a deviation rectifying method for a deviation material, and belongs to the technical field of auxiliary devices in a coiled material production process.
Background
When the coiled material runs at a high speed, the material can shift left and right, so that the edge of the material is irregular. The deviation correcting system comprises a deviation correcting controller, a deviation correcting executing mechanism and a deviation correcting sensor. The deviation correcting sensor is used for detecting the deviation amount of the material, the deviation amount is transmitted to the deviation correcting controller, and the deviation correcting controller carries out related operation to convert the deviation amount of the material fed back by the deviation correcting sensor into the running speed and the running direction of the motor.
There are many types of deviation-correcting sensors available in the market, among which the ultrasonic deviation-correcting sensors are used most. In addition, the device also comprises an infrared deviation rectifying sensor and a CCD image sensor, wherein the detection element of the ultrasonic deviation rectifying sensor is circular or elliptical. The detection principle is two circular ultrasonic sensitive elements, one for transmitting and the other for receiving. If the received signal is zero, the transmitted signal is completely blocked; if the received signal is maximum, the received signal is 5V at the moment, which represents that no shielding exists between transmission and reception; if half is occluded, the received signal is the largest and smallest half, i.e., 2.5V. The principle of the deviation rectifying sensor is as follows: and (3) detecting the distance of the material from the center by taking 2.5V as a reference, and outputting the distance to a motor through the operation of a deviation rectifying sensor. In other words, the material deviation distance is determined by the voltage output according to the area of the material shielding ultrasonic wave, however, the areas of the circle and the ellipse are both nonlinear, so the detected voltage is also nonlinear, and the control accuracy of the deviation correction sensor is not high.
Therefore, those skilled in the art are dedicated to develop a linear ultrasonic deviation rectifying sensor and a deviation rectifying method for a deviation material, so as to solve the technical problem that the deviation rectifying accuracy of the deviation rectifying sensor in the prior art is not high.
Disclosure of Invention
In view of the above defects in the prior art, the present invention provides a linear ultrasonic deviation-correcting sensor and a deviation-correcting method for a deviation material, so as to solve the technical problem in the prior art that the deviation-correcting accuracy of the deviation-correcting sensor is not high.
In order to achieve the purpose, the invention provides a linear ultrasonic deviation rectifying sensor which comprises a U-shaped shell, wherein the shell comprises an offset distance measuring mechanism, the offset distance measuring mechanism comprises a transmitting plate and a receiving plate, and the transmitting plate and the receiving plate are symmetrically arranged; a square ultrasonic transmitting head is arranged on the transmitting plate; the receiving plate is provided with a square ultrasonic receiving head.
Preferably, the ultrasonic transmitting head and the ultrasonic receiving head are symmetrically arranged, and have the same size and the same shape.
Preferably, the ultrasonic transmitting head and the ultrasonic receiving head are rectangular or square.
Preferably, the outer side of the shell is provided with an aviation plug, and the aviation plug is electrically connected with the offset distance measuring mechanism.
Preferably, the relationship between the output voltage of the linear ultrasonic deviation-rectifying sensor and the position of the detected material is as follows:
in the formula: a represents an ultrasonic transmitting head, and the unit is mm;
b represents the widths of the ultrasonic transmitting head and the ultrasonic receiving head, and the unit is mm;
x represents the area of the square ultrasonic receiving head covered by the detected material and has the unit of mm2；
And u represents the output voltage of the linear ultrasonic deviation rectifying sensor and has the unit of mV.
The invention also comprises a deviation material deviation rectifying method of the linear ultrasonic deviation rectifying sensor, which is characterized in that: the method comprises the following steps:
1) the square ultrasonic wave transmitting head transmits ultrasonic signals;
2) the square ultrasonic receiving head receives ultrasonic signals.
Preferably, the method further comprises the following specific steps before the step 1):
1) a square ultrasonic transmitting head is arranged on the transmitting plate;
2) the receiving plate is provided with a square ultrasonic receiving head.
Preferably, the method further comprises the following specific steps after the step 2):
1) the linear ultrasonic deviation-rectifying sensor transmits an ultrasonic signal to the deviation-rectifying controller, and the ultrasonic signal is converted into the electric signal by the deviation-rectifying controller;
2) and the deviation correction controller transmits the electric signal to a deviation correction executing mechanism.
The invention has the beneficial effects that:
1) the invention relates to a linear ultrasonic deviation rectifying sensor which comprises a U-shaped shell, wherein the shell comprises an offset distance measuring mechanism, the offset distance measuring mechanism comprises a transmitting plate and a receiving plate, and the transmitting plate and the receiving plate are symmetrically arranged; a square ultrasonic transmitting head is arranged on the transmitting plate; the receiving plate is provided with a square ultrasonic receiving head. The square ultrasonic transmitting head is arranged on the transmitting plate; the square ultrasonic receiving head is arranged on the receiving plate, the square ultrasonic transmitting head transmits an electric signal, the square ultrasonic receiving head receives a signal, the distance of material deviation can be accurately measured on the basis, and the distance of the material deviation can be in direct proportion to the signal intensity of the receiving head, so that the control precision of the deviation rectifying system can be greatly improved, and the technical problem that the deviation rectifying precision of a deviation rectifying sensor in the prior art is not high is solved.
2) The ultrasonic transmitting head and the ultrasonic receiving head are symmetrically arranged, have the same size and shape, are rectangular or square, and are electrically connected with the offset measuring mechanism. The ultrasonic transmitting head and the ultrasonic receiving head which are the same in size and shape form a linear relation between the position relation of the detected material and the output voltage, and the measurement accuracy of the material deviation distance is improved.
Drawings
FIG. 1 is a schematic structural diagram of a linear ultrasonic deviation-rectifying sensor according to the present invention;
FIG. 2 is a graph showing the input/output characteristics of a circular ultrasonic transmitter and receiver according to the present invention;
FIG. 3 is a graph showing the input/output characteristics of a square ultrasonic transmitter and receiver according to the present invention.
Wherein, 1 is a shell; 2 is a transmitting plate; 21 is an ultrasonic transmitting head; 3 is a receiving plate; 31, an ultrasonic receiving head; and 4, aviation plug.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, wherein the terms "upper", "lower", "left", "right", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, in order to solve the above technical problem, the present invention provides a linear ultrasonic deviation rectification sensor, which includes a U-shaped housing 1, wherein the housing 1 includes an offset distance measuring mechanism, the offset distance measuring mechanism includes a transmitting plate 2 and a receiving plate 3, and the transmitting plate 2 and the receiving plate 3 are symmetrically arranged; the transmitting plate 2 is provided with a square ultrasonic transmitting head 21; the receiving plate 3 is provided with a square ultrasonic receiving head 31.
According to the linear ultrasonic deviation rectifying sensor, a square ultrasonic emitting head 21 is arranged on an emitting plate 2; the receiving plate 3 is provided with a square ultrasonic receiving head 31. The ultrasonic wave transmitting head 21 is used for transmitting ultrasonic signals; the ultrasonic receiving head 31 is used for receiving ultrasonic signals. If the ultrasonic receiving head 31 does not receive the ultrasonic signal, the detected material blocks all signals; if the received ultrasonic signal is maximum, it represents that there is no shielding between the ultrasonic transmitting head 21 and the ultrasonic receiving head 31; if the material to be inspected blocks half of the area of the square ultrasonic receiving head 31, the ultrasonic signal displayed is half of the maximum value. The linear ultrasonic deviation-rectifying sensor related by the invention takes the time of shielding half as the center, thereby detecting the distance of the material from the center, converting the distance into an electric signal through the deviation-rectifying controller and outputting the electric signal to the deviation-rectifying actuating mechanism. In other words, the distance of the test material deviation is determined by the area of the test material shielding the square ultrasonic receiving head 31. In the prior art, the ultrasonic transmitter head 21 and the ultrasonic receiver head 31, which are circular and elliptical, are nonlinear, and thus the detected voltage is also nonlinear.
Here, a circular ultrasonic sensor is taken as an example:
referring to fig. 2 and fig. 3, the relationship between the output voltage and the position of the detected material is obtained through theoretical derivation and multiple experimental verifications:
in the formula: r is the radius of the circular sensor sensing element in mm.
x represents the area of the circular ultrasonic receiving head 31 covered with the material to be tested, and the unit is mm2；
And u represents the output voltage of the nonlinear ultrasonic deviation rectifying sensor and has the unit of mV.
It is clear that the output is not linear with the input and the experimental data are shown in table 1.
Round and square sensor sensitive element test data table
TABLE 1
The maximum absolute error Δ y is 283.6mV, and the maximum relative error is 5.72% at γ Δ y/5000, which greatly affects the measurement accuracy.
The input and output characteristic curves of the linear ultrasonic deviation-rectifying sensor are shown in fig. 2.
The position relation between the output voltage of the linear ultrasonic deviation rectifying sensor and the detected material is as follows:
in the formula: a represents an ultrasonic transmitting head 21 with a unit of mm;
b represents the widths of the ultrasonic transmitter head 21 and the ultrasonic receiver head 31, and the unit is mm;
x represents the area of the square ultrasonic receiving head (31) covered by the material to be tested and has the unit of mm2；
And u represents the output voltage of the linear ultrasonic deviation rectifying sensor and has the unit of mV.
The invention relates to a deviation rectifying actuating mechanism of a linear ultrasonic deviation rectifying sensor, which is a deviation rectifying actuating mechanism of an alternating current servo edge detector and comprises a rack fixed on a frame of a heat setting machine, a traction plate connected with a nose arm of the heat setting machine, a driving motor arranged on the traction plate and provided with a speed reducer, and a gear fixed on an output shaft of the speed reducer and provided with a gear seat, wherein the gear is matched with the rack in a gear and rack matching cavity of the gear seat, and the gear seat is also provided with a gear and rack pressing device used for enabling the gear to be attached towards the direction of the rack so as to enable the gear to be in gapless matching with the rack.
The aviation plug 4 is one of connectors, originates from the military industry, and is named as aviation plug for short. The aviation plug 4 is an electromechanical element connecting the electrical lines, and therefore its own electrical parameters are the first issues to consider in selecting the aviation plug 4. The correct selection and use of the aviation plug 4 is an important aspect of ensuring circuit reliability. The linear ultrasonic deviation-rectifying sensor related by the invention is electrically connected with the related components.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (4)
1. The utility model provides a linear ultrasonic wave sensor of rectifying, includes U-shaped shell (1), characterized by: the shell (1) comprises an offset distance measuring mechanism, the offset distance measuring mechanism comprises a transmitting plate (2) and a receiving plate (3), and the transmitting plate (2) and the receiving plate (3) are symmetrically arranged; a square ultrasonic transmitting head (21) is arranged on the transmitting plate (2); a square ultrasonic receiving head (31) is arranged on the receiving plate (3); the ultrasonic wave emitting head (21) and the ultrasonic wave receiving head (31) are symmetrically arranged, have the same size and the same shape, the ultrasonic wave emitting head (21) and the ultrasonic wave receiving head (31) are rectangular or square, and the position relation between the output voltage of the linear ultrasonic wave deviation rectifying sensor and the detected material is as follows:
in the formula: a represents the length of the ultrasonic transmitting head (21) and the ultrasonic receiving head (31), and the unit is mm;
b represents the width of the ultrasonic transmitting head (21) and the ultrasonic receiving head (31), and the unit is mm;
x represents the area of the square ultrasonic receiving head (31) covered by the material to be tested and has the unit of mm2；
And u represents the output voltage of the linear ultrasonic deviation rectifying sensor and has the unit of mV.
2. The linear ultrasonic deskew sensor according to claim 1, wherein: the aviation plug is characterized in that an aviation plug (4) is arranged on the outer side of the shell (1), and the aviation plug (4) is electrically connected with the offset distance measuring mechanism.
3. The method for rectifying the deviation of the offset material using the linear ultrasonic rectification sensor according to any one of claims 1 to 2, characterized in that: the method comprises the following steps:
1) the square ultrasonic wave transmitting head (21) transmits ultrasonic signals;
2) a square ultrasonic receiving head (31) receives ultrasonic signals;
a square ultrasonic transmitting head (21) is arranged on the transmitting plate (2);
a square ultrasonic receiving head (31) is arranged on the receiving plate (3);
the position relation between the output voltage of the linear ultrasonic deviation rectifying sensor and the detected material is as follows:
in the formula: a represents the length of the ultrasonic transmitting head (21) and the ultrasonic receiving head (31), and the unit is mm;
b represents the width of the ultrasonic transmitting head (21) and the ultrasonic receiving head (31), and the unit is mm;
x represents the area of the square ultrasonic receiving head (31) covered by the material to be tested and has the unit of mm2；
And u represents the output voltage of the linear ultrasonic deviation rectifying sensor and has the unit of mV.
4. The offset material correction method as claimed in claim 3, wherein: the method also comprises the following specific steps after the step 1):
1) the linear ultrasonic deviation-rectifying sensor transmits an ultrasonic signal to the deviation-rectifying controller, and the ultrasonic signal is converted into an electric signal by the deviation-rectifying controller;
2) and the deviation correction controller transmits the electric signal to a deviation correction executing mechanism.
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| CN109592471A (en) * | 2019-01-28 | 2019-04-09 | 洛阳理工学院 | A kind of ultrasonic wave self correction cutting machine |
| CN110470224B (en) * | 2019-09-16 | 2024-05-28 | 广州贝晓德智能科技有限公司 | Panoramic scanning multipoint detection sensor |
| CN114919952B (en) * | 2022-04-26 | 2023-10-31 | 广东工业大学 | Ultrasonic small hole detection and deviation correction discrimination method for coiled material with edge perforation |
| CN116608801A (en) * | 2023-07-20 | 2023-08-18 | 钛玛科（北京）工业科技有限公司 | Material edge position detection system and method |
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| US6289729B1 (en) * | 1998-12-28 | 2001-09-18 | Fife Corporation | Ultrasonic sensor for web-guiding apparatus |
| DE19905331A1 (en) * | 1999-02-09 | 2000-04-20 | Siemens Ag | Monitoring method for lateral position of e.g. paper web or plastic film |
| US6955323B2 (en) * | 2002-05-14 | 2005-10-18 | Zuiko Corporation | Web guider |
| CN202350758U (en) * | 2011-12-06 | 2012-07-25 | 常州思加创电子有限责任公司 | Ultrasonic probe for deviation correction device |
| CN204167416U (en) * | 2014-11-03 | 2015-02-18 | 深圳市吉阳自动化科技有限公司 | Deviation correcting device |
| CN105366406A (en) * | 2015-12-14 | 2016-03-02 | 重庆东登科技有限公司 | Coiled material splitting machine ultrasonic deviation rectifying mechanism with overload protection function |
| CN105446227A (en) * | 2015-12-23 | 2016-03-30 | 志圣科技（广州）有限公司 | Automatic deviation rectification control system and control method of touch screen coiled material |
| CN106970590B (en) * | 2017-05-11 | 2019-07-23 | 西安理工大学 | A kind of paper tape correcting controller and method for correcting error |
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Address after: 1-1, No. 236-19, Jietai Road, Jieshi Town, Banan District, Chongqing 400000 Patentee after: CHONGQING ARISE TECHNOLOGY CO.,LTD. Address before: 400060 4th floor, west half floor, building a, No. 7, Danlong Road (Dangui Industrial Park), Nan'an District, Chongqing Patentee before: CHONGQING ARISE TECHNOLOGY CO.,LTD. |