CN114200157A - Cylinder transient speed measuring device and measuring method thereof - Google Patents
Cylinder transient speed measuring device and measuring method thereof Download PDFInfo
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- CN114200157A CN114200157A CN202111540404.6A CN202111540404A CN114200157A CN 114200157 A CN114200157 A CN 114200157A CN 202111540404 A CN202111540404 A CN 202111540404A CN 114200157 A CN114200157 A CN 114200157A
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- 230000001052 transient effect Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 8
- 230000010365 information processing Effects 0.000 claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 230000005389 magnetism Effects 0.000 abstract 1
- 230000001960 triggered effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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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
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
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Abstract
The invention discloses a device for measuring transient speed of an air cylinder, which comprises a test module and a magnetic core, wherein the test module is used for testing the transient speed of the air cylinder; the test module comprises a module shell, an indicator light, a magnetic signal sensor and an information processing module; the magnetic core is installed on the piston of the cylinder, and the test module is detachably installed on the surface of the cylinder. According to the invention, through arranging the bipolar magnetic core, the waveform signal with analog change can be output to the magnetic signal acquisition module, the position is more accurately judged compared with the cylinder device triggered by the past magnetic switching value, and the problems of poor reliability and stability caused by the degradation of the magnetism of the magnetic core are solved. The measuring device can feed back the transient speed and the motion direction of the cylinder in real time, and can be suitable for measuring different fixed points on the cylinder, so that the measuring device is high in applicability.
Description
Technical Field
The invention relates to the technical field of industrial equipment, in particular to a device and a method for measuring transient speed of an air cylinder.
Background
With the development of science and technology, various automatic devices have become an indispensable part in life, and moving devices such as cylinders are important components of automatic devices. The adjustment of the movement speeds of the air cylinder and the like is carried out by some front-line factory personnel according to practical application scenes in a large part of the adjustment according to experience; as the environment changes, such as air pressure, or wear of moving parts, or improper maintenance, the cylinder parts are caused to move too fast, resulting in damage to the work product to be produced.
When testing cylinder speed, the conventional method is: measurement based on a digital switching value magnetic sensor; measurements are made based on its flow rate, or changes in air pressure within the cylinder cavity.
The traditional method has the following disadvantages: 1. the structure design is complex, and the cost is high; 2. the real-time feedback speed is slow, the transient speed of some key fixed points cannot be measured, or only the average speed can be obtained.
Accordingly, those skilled in the art have endeavored to develop a cylinder transient speed measuring apparatus based on a magnetic waveform signal.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a measuring device capable of measuring a transient speed and a moving direction of a cylinder.
In order to achieve the aim, the invention provides a device for measuring the transient speed of an air cylinder, which comprises a test module and a magnetic core; the test module comprises a module shell, an indicator light, a magnetic signal sensor and an information processing module; the magnetic core is installed on the piston of the cylinder, and the test module is detachably installed on the surface of the cylinder.
Furthermore, a printed circuit board is arranged in the module shell, and the indicator light, the magnetic signal sensor and the information processing module are respectively connected with different positions of the printed circuit board.
Further, the magnetic signal sensor is positioned on one side close to the cylinder.
Further, the magnetic cores are symmetrically arranged on the upper side and the lower side of the piston, and the number of the magnetic cores on each side is 2.
Furthermore, the distance between the magnetic cores on each side is 5 mm-10 mm.
Furthermore, the magnetic cores on the upper side of the piston and the magnetic cores at the corresponding positions on the lower side of the piston are arranged in a reversed polarity mode.
Further, the magnetic cores on each side are arranged in opposite polarity.
The invention also provides a method for measuring the transient speed of the cylinder by adopting the device, which comprises the following steps:
when the piston reciprocates in the cylinder, a continuously changing magnetic waveform signal is formed, the indicator light is on, the generated magnetic waveform signal is transmitted to the information processing module, the information processing module carries out information processing on the magnetic waveform signal, meanwhile, the distance between the magnetic cores on the single sides is input, and the transient speed and the motion direction of the cylinder are finally obtained through calculation processing.
Further, when the first magnetic core on the piston moves to the position right below the magnetic signal sensor, a peak value or valley value magnetic signal is generated, and when the second magnetic core on the piston moves to the position right below the magnetic signal sensor, a valley value or peak value magnetic signal is generated.
Compared with the prior art, the invention has the beneficial effects that:
the measuring device provided by the invention can feed back the transient speed and the moving direction of the air cylinder in real time, is suitable for measuring different fixed points on the air cylinder, and has stronger applicability.
Drawings
FIG. 1 is a schematic structural diagram of a cylinder transient speed measuring device according to a preferred embodiment of the present invention;
fig. 2 is a diagram showing the correspondence between the magnitude of the magnetic force and the waveform of the electric signal.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
Fig. 1 shows a schematic diagram of a cylinder transient speed measuring device provided by the present invention, which includes a testing module 1 and a magnetic core 2, wherein the testing module 1 is detachably mounted on the surface of a cylinder 3, the testing module 1 includes a module housing 101, an indicator light 102, a magnetic signal sensor 103, and an information processing module 104, a printed circuit board 105 is further disposed inside the module housing 101, the indicator light 102, the magnetic signal sensor 103, and the information processing module 104 are respectively connected to different positions of the printed circuit board 105, and preferably, the magnetic signal sensor 103 is disposed on a side close to the cylinder 3 so as to effectively sense a magnetic signal.
The magnetic core 2 is arranged on a piston 4 in the cylinder 3, wherein, the magnetic cores 201 and 202 are arranged on the upper side of the piston 4, and the magnetic cores 203 and 204 are arranged on the lower side of the piston 4 and are symmetrical with the magnetic cores 201 and 202 respectively; preferably, magnetic core 201 and magnetic core 203 are arranged with opposite polarity, magnetic core 202 and magnetic core 204 are arranged with opposite polarity, magnetic core 201 and magnetic core 202 are arranged with opposite polarity, and magnetic core 203 and magnetic core 204 are arranged with opposite polarity.
Preferably, the distance between the magnetic core 201 and the magnetic core 202 is 5 mm-10 mm, and the distance between the magnetic cores on the upper side and the lower side of the piston 4 is the same.
In another embodiment of the invention, a method for measuring transient speed of a cylinder by using the measuring device is provided,
when the piston 4 moves inside the cylinder 3, the magnetic core 2 on the piston 4 is driven to move, a magnetic signal is generated through the magnetic signal sensor 103, when the magnetic core 201 on the piston 4 moves to the position right below the magnetic signal sensor 103, a peak value or valley value magnetic signal is generated, when the magnetic core 202 continues to move, the magnetic signal continuously descends or continuously ascends, when the magnetic core 202 moves to the position right below the magnetic signal sensor 103, the magnetic signal reaches the valley value or the peak value, and when the piston 4 moves inside the cylinder 3, a continuously-changing magnetic waveform signal is finally formed. Specifically, when the S level is opposite to the magnetic signal sensor, the signal waveform is in a wave trough; when the N-level is opposite to the magnetic force measuring chip, the signal waveform is at a peak, and as shown in fig. 2, the running direction of the piston 4 can be judged according to the sequence between the peak and the valley of the waveform on the time axis.
The generated magnetic force waveform signal is transmitted to the information processing module 104, the information processing module 104 performs information processing on the magnetic force waveform signal, specifically, the magnetic force waveform signal is preprocessed into an analog electric signal waveform, then signal shaping is performed and analog/digital signal conversion is completed, finally, the waveform signal transmitted by the magnetic force signal preprocessing module is subjected to algorithm processing by using an FPGA (field programmable gate array), the size between the maximum value peak and the minimum value peak valley and the coordinate on a time axis are calculated, so that the interval time between the peak value peak valley and the minimum value peak can be calculated, and meanwhile, the distance between the magnetic cores 201 and 202 is input, and the instantaneous speed of the cylinder 3 at the point is calculated.
When the magnetic signal is generated, the indicator light 102 is illuminated for the convenience of observation by the staff.
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 (9)
1. The device for measuring the transient speed of the cylinder is characterized by comprising a test module and a magnetic core; the test module comprises a module shell, an indicator light, a magnetic signal sensor and an information processing module; the magnetic core is installed on the piston of the cylinder, and the test module is detachably installed on the surface of the cylinder.
2. The cylinder transient speed measuring device of claim 1, wherein a printed circuit board is disposed inside said module housing, and said indicator light, said magnetic signal sensor, and said information processing module are connected to different positions of said printed circuit board.
3. The apparatus of claim 2, wherein the magnetic signal sensor is located adjacent to a side of the cylinder.
4. The apparatus of claim 1, wherein the magnetic cores are symmetrically disposed at upper and lower sides of the piston, and the number of the magnetic cores at each side is 2.
5. The device for measuring the transient speed of a cylinder as claimed in claim 4, wherein the distance between the magnetic cores on each side is 5 mm-10 mm.
6. The apparatus of claim 4, wherein the magnetic core on the upper side of the piston is arranged in a polarity opposite to that of the magnetic core at the corresponding position on the lower side of the piston.
7. The apparatus of claim 4, wherein the magnetic cores on each side are arranged with opposite polarity.
8. The method for measuring the transient speed of the cylinder by adopting the measuring device as claimed in any one of claims 1 to 7, characterized in that when the piston reciprocates in the cylinder, a continuously changing magnetic waveform signal is formed, the indicator light is turned on, the generated magnetic waveform signal is transmitted to the information processing module, the information processing module carries out information processing on the magnetic waveform signal, and simultaneously the distance between the magnetic cores at one side is input, and the transient speed and the moving direction of the cylinder are finally obtained through calculation processing.
9. The method of claim 8, wherein the peak or valley magnetic force signal is generated when a first core on the piston moves directly under the magnetic force signal sensor and the valley or peak magnetic force signal is generated when a second core on the piston moves directly under the magnetic force signal sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111540404.6A CN114200157A (en) | 2021-12-16 | 2021-12-16 | Cylinder transient speed measuring device and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111540404.6A CN114200157A (en) | 2021-12-16 | 2021-12-16 | Cylinder transient speed measuring device and measuring method thereof |
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| CN114200157A true CN114200157A (en) | 2022-03-18 |
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| CN202111540404.6A Pending CN114200157A (en) | 2021-12-16 | 2021-12-16 | Cylinder transient speed measuring device and measuring method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050231192A1 (en) * | 2004-04-20 | 2005-10-20 | Ketelaars Andy W | Piston velocity detector |
| JP2006226909A (en) * | 2005-02-18 | 2006-08-31 | Komatsu Ltd | Position measurement apparatus for cylinder |
| US20070216401A1 (en) * | 2006-02-22 | 2007-09-20 | Sick Ag | Magnetic sensor |
| EP2072963A1 (en) * | 2007-12-21 | 2009-06-24 | Sick Ag | Sensor |
| JP2014074662A (en) * | 2012-10-04 | 2014-04-24 | Komatsu Ltd | Cylinder position measurement device, and cylinder position measurement method |
| JP2014074691A (en) * | 2012-10-05 | 2014-04-24 | Komatsu Ltd | Cylinder position measurement device, and cylinder position measurement method |
| US20170176215A1 (en) * | 2015-12-16 | 2017-06-22 | Smc Corporation | Position detecting device |
| CN216595173U (en) * | 2021-12-16 | 2022-05-24 | 南通智能感知研究院 | Cylinder transient speed measuring device |
-
2021
- 2021-12-16 CN CN202111540404.6A patent/CN114200157A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050231192A1 (en) * | 2004-04-20 | 2005-10-20 | Ketelaars Andy W | Piston velocity detector |
| JP2006226909A (en) * | 2005-02-18 | 2006-08-31 | Komatsu Ltd | Position measurement apparatus for cylinder |
| US20070216401A1 (en) * | 2006-02-22 | 2007-09-20 | Sick Ag | Magnetic sensor |
| EP2072963A1 (en) * | 2007-12-21 | 2009-06-24 | Sick Ag | Sensor |
| JP2014074662A (en) * | 2012-10-04 | 2014-04-24 | Komatsu Ltd | Cylinder position measurement device, and cylinder position measurement method |
| JP2014074691A (en) * | 2012-10-05 | 2014-04-24 | Komatsu Ltd | Cylinder position measurement device, and cylinder position measurement method |
| US20170176215A1 (en) * | 2015-12-16 | 2017-06-22 | Smc Corporation | Position detecting device |
| CN216595173U (en) * | 2021-12-16 | 2022-05-24 | 南通智能感知研究院 | Cylinder transient speed measuring device |
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Country or region after: China Address after: 226009 Floor 7, Building 16, Zilang Technopole, No. 60, Chongzhou Avenue, Chongchuan District, Nantong City, Jiangsu Province Applicant after: Nantong Yangtze River Delta Intelligent Perception Research Institute Address before: 226009 floor 7, building 16, Zilang science and Technology City, central Innovation Zone, Chongchuan District, Nantong City, Jiangsu Province Applicant before: Nantong Institute of intelligent perception Country or region before: China |