CN115038272B - Multipath grating ruler signal acquisition and measurement device - Google Patents
Multipath grating ruler signal acquisition and measurement device Download PDFInfo
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- CN115038272B CN115038272B CN202210611710.2A CN202210611710A CN115038272B CN 115038272 B CN115038272 B CN 115038272B CN 202210611710 A CN202210611710 A CN 202210611710A CN 115038272 B CN115038272 B CN 115038272B
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- 238000005259 measurement Methods 0.000 title claims abstract description 46
- 230000000087 stabilizing effect Effects 0.000 claims description 13
- 239000003381 stabilizer Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims 6
- 238000007906 compression Methods 0.000 claims 6
- 238000001125 extrusion Methods 0.000 description 15
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000013500 data storage Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 230000003019 stabilising effect Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
- H05K5/0234—Feet; Stands; Pedestals, e.g. wheels for moving casing on floor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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Abstract
The invention discloses a multipath grating ruler signal acquisition and measurement device which comprises a bottom plate, wherein a top cover is arranged at the top of the bottom plate, the top of the bottom plate is in contact with the bottom of the top cover, a protection device is uniformly arranged at the top of the top cover, the top of the top cover is fixedly connected with the bottom of the protection device, a handle is arranged on the front surface of the bottom plate, the front surface of the bottom plate is fixedly connected with the back surface of the handle, clamping frames are symmetrically arranged at two ends of the handle, the back surface of the clamping frames is fixedly connected with the front surface of the bottom plate, a contact device is uniformly arranged at the bottom of the bottom plate, the bottom of the bottom plate is fixedly connected with the top of the contact device, and two ends of the protection device comprise a connecting plate and are fixedly connected with the outer surface of the clamping plate.
Description
Technical Field
The invention relates to the field of grating ruler signal acquisition, in particular to a multipath grating ruler signal acquisition measuring device.
Background
The grating ruler is used as a linear position measuring device and widely applied to the machining industry, and generally comprises a light source, a scale grating, an indication grating and a photoelectric sensor, wherein the working principle of the grating ruler is that the indication grating and the scale grating move mutually to form optical moire fringes, the photoelectric sensor converts the optical moire fringes into electric moire signals, position measurement is carried out by counting and subdividing the electric moire signals, the existing multi-path grating ruler needs to use a corresponding measuring device when the signals are collected and measured, but the current measuring device is easy to collide and fall when in use, is inconvenient to turn when in use, affects the use convenience of users, and the multi-path grating ruler signal collecting and measuring device is provided for solving the problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides a multi-path grating ruler signal acquisition measuring device, which solves the problems that the measuring device is easy to collide and inconvenient to turn when in use.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a multi-path grating ruler signal acquisition and measurement device, which comprises a bottom plate, wherein the top of the bottom plate is provided with a top cover, the top of the bottom plate is contacted with the bottom of the top cover, the top of the top cover is uniformly provided with a protection device, the use safety of the multi-path grating ruler signal acquisition and measurement device can be improved by arranging the protection device, the top of the top cover is fixedly connected with the bottom of the protection device, the front of the bottom plate is provided with a handle, the front of the bottom plate is fixedly connected with the back of the handle, two ends of the handle are symmetrically provided with clamping frames, the back of the clamping frames is fixedly connected with the front of the bottom plate, the bottom of the bottom plate is uniformly provided with a contact device, the placement angle of the multi-path grating ruler signal acquisition and measurement device can be adjusted by arranging the contact device, the bottom of the bottom plate is fixedly connected with the top of the contact device, the front of the top cover is symmetrically provided with a positioning plate, and the front of the top cover is fixedly connected with the top of the positioning plate;
preferably, protection device includes the connecting plate, can guarantee this kind of multichannel grating chi signal acquisition measuring device top cap through the rubber pad that protection device top symmetry set up can reduce its impact force when collision ground, the both ends symmetry of connecting plate is provided with the joint board, and the both ends of connecting plate and the surface fixed connection of joint board, the top of joint board is provided with the rubber pad, can guarantee the connection compactness between protection device and the top cap through the firm pad that protection device inside set up, and then improved the practicality of this kind of multichannel grating chi signal acquisition measuring device, and the top and the bottom swing joint of rubber pad of joint board, the inside symmetry of connecting plate is provided with the skeleton, the inner wall of connecting plate contacts with the surface of skeleton, the bottom of joint board evenly is provided with firm pad, and the bottom of joint board and the top fixed connection of firm pad, the inside symmetry of bottom plate is provided with swivel hinge, and the inner wall and the both ends fixed connection of swivel hinge of bottom plate.
Preferably, the axle center department of bottom plate bottom is provided with stabilising arrangement, through setting up stabilising arrangement, can improve this kind of multichannel grating chi signal acquisition measuring device's result of use, and the bottom of bottom plate and stabilising arrangement's top fixed connection.
Preferably, the contact device comprises a contact frame, the extrusion spring and the base cooperation that set up through the contact device are used, can play the cushioning effect, the inside of contact frame is provided with the guide cylinder, and the inner wall of contact frame and the surface fixed connection of guide cylinder, can adjust the angle of placing of bottom plate through the roof and the flexible pole that contact device inside set up, and then make this kind of multichannel grating chi signal acquisition measuring device adapt to daily use operation more, the inside of guide cylinder evenly is provided with the flexible pole, and the inner wall of guide cylinder contacts with the bottom of flexible pole, the top of flexible pole is provided with the roof, and the top of flexible pole and the bottom fixed connection of roof can improve this kind of multichannel grating chi signal acquisition measuring device's stability through a plurality of contact device for the bottom plate bottom surface can not contact with the contact surface, and then avoid using for a long time to cause wearing and tearing, the inside symmetry of contact frame is provided with extrusion spring, and the inner wall and the surface contact of extrusion spring, extrusion spring's bottom is provided with the base, and extrusion spring's bottom and the bottom fixed connection of base, the quantity of extrusion spring is two and the bottom of extrusion spring and the bottom of two extrusion springs.
Preferably, the stabilizing device comprises a rotating ring, the sliding block and the supporting rod which are arranged inside the stabilizing device are matched for use, the multipath grating ruler signal acquisition and measurement device can freely rotate according to the standing position of an operator when in use, the operator is further prevented from moving, the sliding block is uniformly arranged inside the rotating ring, the inner wall of the rotating ring is movably connected with the two ends of the sliding block, the supporting rod is arranged on the outer surface of the sliding block, the outer surface of the sliding block is fixedly connected with the inner wall of the supporting rod, the rotating disk is arranged on the outer surface of the supporting rod, the friction force between the stabilizing device and the contact surface can be increased through the friction ring which is uniformly arranged at the bottom of the rotating disk, the stabilizing effect of the multipath grating ruler signal acquisition and measurement device is further guaranteed, the outer surface of the supporting rod is fixedly connected with the edge of the rotating disk, and the bottom of the rotating disk is uniformly provided with the friction ring and the top of the friction ring is fixedly connected with the rotating disk.
The multipath grating ruler signal acquisition and measurement device comprises the following steps in the use process:
s1: a grating signal output section: a grating ruler;
s2: grating signal acquisition and shaping part: the high-speed photoelectric coupler is adopted to collect grating signals (the cut-off frequency is up to 20 MHz), and then the collected grating signals are further shaped through the phase inverter, so that the grating signals before entering the high-speed data module of the ARM chip are clean and complete, and the reliability and the anti-interference performance of signal collection are greatly improved;
s3: grating signal counting, direction judging and frequency doubling part: adopting a high-speed orthogonal coding acquisition module QEI in an ARM chip to count, judge and frequency-multiply 4 signals after filtering and shaping;
s4: data communication part between ARM: each ARM chip sends the acquired and processed data to the main ARM chip through a synchronous serial interface SSI;
s5: data communication part between the main ARM chip and the PC: the main ARM chip communicates with data acquisition software on the PC through an RS232 interface. The PC machine is expanded into a plurality of high-speed serial ports (1-to-4, 1-to-8, 1-to-16 and the like) by using MOXO multi-serial port cards produced by Taiwan of China, and the high-speed serial ports can be respectively connected with a plurality of collecting boxes;
s6: data acquisition and processing software of the PC: the software can perform data display, curve drawing, segmented data storage, printing and the like on signals of the plurality of grating data acquisition boxes.
Preferably, the plurality of acquisition and measurement devices can be connected in series through serial ports, the connection of one computer to the plurality of acquisition and measurement devices is realized by setting the chassis number of each acquisition and measurement device, the grating ruler capable of connecting different resolutions and measuring ranges is only required to be set in software, an ARM high-speed processing module is adopted, the sampling frequency is up to 20MHz, the device is suitable for instantaneous dynamic displacement measurement and static displacement measurement, each acquisition and measurement device can be set into different sampling channels such as 8 channels, 16 channels and 32 channels, different experimental requirements are met, the device is developed by adopting an integrated circuit board, the response speed is high, and the instantaneous displacement can be captured; the multi-path grating data acquisition and measurement device can be connected with grating scales with different precision, precision conversion can be completed through software setting, universality is greatly improved, acquisition and analysis software can complete setting of test parameters, automatic data acquisition, storage, curve display and the like, and each multi-path grating data acquisition device is divided into 8 channels, 16 channels and 32 channels according to the number of connectable grating scales.
The beneficial effects of the invention are as follows:
1. the protection device is arranged, so that the use safety of the multi-path grating ruler signal acquisition and measurement device can be improved, the impact force of the top cover of the multi-path grating ruler signal acquisition and measurement device can be reduced when the top cover is in collision and grounding through the symmetrically arranged rubber pads at the top of the protection device, the connection tightness between the protection device and the top cover can be ensured through the stable pad arranged in the protection device, and the practicability of the multi-path grating ruler signal acquisition and measurement device is further improved.
2. The contact device is arranged, the placing angle of the multi-path grating ruler signal acquisition and measurement device can be adjusted, the extrusion spring and the base arranged in the contact device are matched for use, the damping effect can be achieved, the placing angle of the bottom plate can be adjusted through the top plate and the flexible rod arranged in the contact device, the multi-path grating ruler signal acquisition and measurement device is further suitable for daily use and operation, the stability of the multi-path grating ruler signal acquisition and measurement device can be improved through a plurality of contact devices, the bottom surface of the bottom plate cannot be contacted with a contact surface, and abrasion caused by long-time use is avoided.
3. The invention can improve the use effect of the multi-path grating ruler signal acquisition and measurement device by arranging the stabilizing device, and can freely rotate according to the standing position of an operator when the multi-path grating ruler signal acquisition and measurement device is used by matching the sliding block and the supporting rod which are arranged in the stabilizing device, so that the operator is prevented from moving, and the friction force between the stabilizing device and the contact surface can be increased by the friction rings which are uniformly arranged at the bottom of the rotating disk, so that the stabilizing effect of the multi-path grating ruler signal acquisition and measurement device is ensured.
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a diagram of a portion of the present invention for grating signal acquisition, filtering, and shaping;
FIG. 3 is a schematic diagram of a single ARM chip data acquisition of the present invention;
FIG. 4 is a schematic diagram of data acquisition of a single ARM chip of the present invention;
FIG. 5 is a front view of the present invention;
FIG. 6 is a schematic view of the structure of the interior of the present invention;
FIG. 7 is a schematic view of the structure of the bottom of the drawing of the present invention;
FIG. 8 is a schematic view of the structure of the protection device of the present invention;
FIG. 9 is a schematic view of the structure of the contact apparatus of FIG. 9 according to the present invention;
FIG. 10 is a schematic view of the stabilization device of FIG. 10 of the present invention;
in the figure: 1. a protection device; 2. a top cover; 3. a bottom plate; 4. a positioning plate; 5. a handle; 6. a clamping frame; 7. a contact device; 8. a rotary hinge; 9. a stabilizing device; 11. a rubber pad; 12. a clamping plate; 13. a skeleton; 14. a connecting plate; 15. a stabilizing pad; 71. a contact frame; 72. a top plate; 73. a flexible rod; 74. a guide cylinder; 75. extruding a spring; 76. a base; 91. a rotating disc; 92. a support rod; 93. a rotating ring; 94. a slide block; 95. friction ring.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Example 1
A multi-path grating ruler signal acquisition and measurement device according to an embodiment of the present invention will be described below with reference to fig. 1 to 10.
As shown in fig. 1-10, the multi-path grating ruler signal acquisition and measurement device comprises a bottom plate 3, wherein a top cover 2 is arranged at the top of the bottom plate 3, the top of the bottom plate 3 is contacted with the bottom of the top cover 2, a protection device 1 is uniformly arranged at the top of the top cover 2, the top of the top cover 2 is fixedly connected with the bottom of the protection device 1, a handle 5 is arranged on the front surface of the bottom plate 3, the front surface of the bottom plate 3 is fixedly connected with the back surface of the handle 5, clamping frames 6 are symmetrically arranged at two ends of the handle 5, the back surface of the clamping frames 6 are fixedly connected with the front surface of the bottom plate 3, a contact device 7 is uniformly arranged at the bottom of the bottom plate 3, the bottom of the bottom plate 3 is fixedly connected with the top of the contact device 7, a positioning plate 4 is symmetrically arranged on the front surface of the top cover 2, and the front surface of the top cover 2 is fixedly connected with the top of the positioning plate 4;
the protection device 1 includes connecting plate 14, can guarantee this kind of multichannel grating chi signal acquisition measuring device top cap 2 when collision ground through the rubber pad 11 that protection device 1 top symmetry set up, the both ends symmetry of connecting plate 14 is provided with joint board 12, and the both ends and the surface fixed connection of joint board 12 of connecting plate 14, the top of joint board 12 is provided with rubber pad 11, and the bottom swing joint of joint board 12 and rubber pad 11, the inside symmetry of connecting plate 14 is provided with skeleton 13, the inner wall of connecting plate 14 contacts with the surface of skeleton 13, the bottom of joint board 12 evenly is provided with firm pad 15, and the bottom of joint board 12 and the top fixed connection of firm pad 15, the inside symmetry of bottom plate 3 is provided with swivel hinge 8, and the inner wall of bottom plate 3 and the both ends fixed connection of swivel hinge 8, the axle center department of bottom plate 3 bottom is provided with stabilizer 9, and the bottom of bottom plate 3 and the top fixed connection of stabilizer 9.
The contact device 7 includes contact frame 71, the inside of contact frame 71 is provided with guide cylinder 74, and the inner wall of contact frame 71 and the surface fixed connection of guide cylinder 74, the roof 72 and the flexible pole 73 through the inside setting of contact device 7 can adjust the angle of placing of bottom plate 3, and then make this kind of multichannel grating chi signal acquisition measuring device adapt to daily use operation more, the inside of guide cylinder 74 evenly is provided with flexible pole 73, and the inner wall of guide cylinder 74 contacts with the bottom of flexible pole 73, the top of flexible pole 73 is provided with roof 72, and the top of flexible pole 73 and the bottom fixed connection of roof 72, can improve the stability of this kind of multichannel grating chi signal acquisition measuring device through a plurality of contact devices 7, make bottom plate 3 bottom surface can not contact with the contact surface, and then avoid long-time use to cause wearing and tearing, the inside symmetry of contact frame 71 is provided with extrusion spring 75, and the inner wall of contact frame 71 contacts with the surface of extrusion spring 75, the bottom of extrusion spring 75 is provided with base 76, and the bottom of extrusion spring 75 and the top fixed connection of base 76, the quantity of extrusion spring 75 is two, and the bottom fixed connection of bottom plate 75 and bottom of extrusion spring 75.
The fixing device 9 comprises a rotating ring 93, the sliding block 94 and the supporting rod 92 are matched to be used through the inside of the fixing device 9, the multipath grating ruler signal acquisition and measurement device can freely rotate according to the standing position of an operator during use, the operator is further prevented from moving, the sliding block 94 is uniformly arranged in the rotating ring 93, the inner wall of the rotating ring 93 is movably connected with the two ends of the sliding block 94, the supporting rod 92 is arranged on the outer surface of the sliding block 94, the outer surface of the sliding block 94 is fixedly connected with the inner wall of the supporting rod 92, the rotating disc 91 is arranged on the outer surface of the supporting rod 92, the friction force between the fixing device 9 and the contact surface can be increased through the friction ring 95 uniformly arranged at the bottom of the rotating disc 91, the fixing effect of the multipath grating ruler signal acquisition and measurement device is further guaranteed, the outer surface of the supporting rod 92 is fixedly connected with the edge of the rotating disc 91, the friction ring 95 is uniformly arranged at the bottom of the rotating disc 91, and the bottom of the rotating disc 91 is fixedly connected with the top of the friction ring 95.
The specific working procedure is as follows:
during operation, this kind of multichannel grating chi signal acquisition measuring device has guaranteed the frictional force between measuring device and the contact surface through the securing device 9 that the bottom set up, the stability of this kind of multichannel grating chi signal acquisition measuring device has been improved, friction ring 95 and rotary disk 91 through securing device 9 bottom setting make measuring device can fast rotation angle when using, and then be convenient for operating personnel operation and observation, and contact device 7 through the securing device 9 setting around can be used for adjusting the angle of placing of bottom plate 3, upward remove through the flexible pole 73 that contact device 7 inside set up, and then make flexible pole 73 bottom and the inside recess department joint of guide cylinder 74, make roof 72 keep motionless after upwards moving, and then use the angle of placing of bottom plate 3 can be adjusted according to a plurality of contact device 7 cooperation.
Example two
A multi-path grating ruler signal acquisition and measurement device according to an embodiment of the present invention will be described below with reference to fig. 1 to 4.
As shown in fig. 1 to 4, on the basis of the first embodiment, the signal acquisition and measurement device for the multipath grating ruler of the present invention includes the following steps when in use:
s1: a grating signal output section: a grating ruler;
s2: grating signal acquisition and shaping part: the high-speed photoelectric coupler is adopted to collect grating signals (the cut-off frequency is up to 20 MHz), and then the collected grating signals are further shaped through the phase inverter, so that the grating signals before entering the high-speed data module of the ARM chip are clean and complete, and the reliability and the anti-interference performance of signal collection are greatly improved;
s3: grating signal counting, direction judging and frequency doubling part: adopting a high-speed orthogonal coding acquisition module QEI in an ARM chip to count, judge and frequency-multiply 4 signals after filtering and shaping;
s4: data communication part between ARM: each ARM chip sends the acquired and processed data to the main ARM chip through a synchronous serial interface SSI;
s5: data communication part between the main ARM chip and the PC: the main ARM chip communicates with data acquisition software on the PC through an RS232 interface. The PC machine is expanded into a plurality of high-speed serial ports (1-to-4, 1-to-8, 1-to-16 and the like) by using MOXO multi-serial port cards produced by Taiwan of China, and the high-speed serial ports can be respectively connected with a plurality of collecting boxes;
s6: data acquisition and processing software of the PC: the software can perform data display, curve drawing, segmented data storage, printing and the like on signals of the plurality of grating data acquisition boxes.
The acquisition and measurement devices can be connected in series through serial ports, the connection of one computer to the acquisition and measurement devices is realized by setting the chassis number of each acquisition and measurement device, grating scales with different resolutions and measuring ranges can be connected, the acquisition and measurement devices can be connected only by setting in software, an ARM high-speed processing module is adopted, the sampling frequency is up to 20MHz, the acquisition and measurement devices are suitable for instantaneous dynamic displacement measurement and static displacement measurement, each acquisition and measurement device can be set into different sampling channels such as 8 channels, 16 channels and 32 channels, different experimental requirements are met, the acquisition and measurement devices are developed by adopting an integrated circuit board, the response speed is high, and the instantaneous displacement can be captured; the multi-path grating data acquisition and measurement device can be connected with grating scales with different precision, precision conversion can be completed through software setting, universality is greatly improved, acquisition and analysis software can complete setting of test parameters, automatic data acquisition, storage, curve display and the like, and each multi-path grating data acquisition device is divided into 8 channels, 16 channels and 32 channels according to the number of connectable grating scales.
The specific working procedure is as follows:
during operation, the high-speed photoelectric coupler is adopted to collect grating signals (the cut-off frequency is up to 20 MHz), then the collected grating signals are subjected to further shaping through the inverter, so that the grating signals before entering the high-speed data module of the ARM chip are clean and complete, the high-speed orthogonal coding collection module QEI in the ARM chip is adopted to count, judge and 4 times frequency the filtered and shaped signals, each ARM chip sends the collected and processed data to the main ARM chip through the synchronous serial interface SSI, the main ARM chip is communicated with the data collection software on the PC through the RS232 interface, and then the signals of the plurality of grating data collection boxes are subjected to data display, curve drawing, segmented data storage and printing through the collection and processing software.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (5)
1. The utility model provides a multichannel grating chi signal acquisition measuring device, includes bottom plate (3), its characterized in that: the top of bottom plate (3) is provided with top cap (2), and the top of bottom plate (3) contacts with the bottom of top cap (2), the top of top cap (2) evenly is provided with protection device (1), and the top of top cap (2) and the bottom fixed connection of protection device (1), the front of bottom plate (3) is provided with handle (5), and the front of bottom plate (3) and the back fixed connection of handle (5), the both ends symmetry of handle (5) is provided with joint frame (6), the back of joint frame (6) and the front fixed connection of bottom plate (3), the bottom of bottom plate (3) evenly is provided with contact device (7), and the bottom of bottom plate (3) and the top fixed connection of contact device (7), the front of top cap (2) is provided with locating plate (4), and the front of top cap (2) and the top fixed connection of locating plate (4).
The protection device (1) comprises a connecting plate (14), clamping plates (12) are symmetrically arranged at two ends of the connecting plate (14), two ends of the connecting plate (14) are fixedly connected with the outer surface of the clamping plates (12), rubber pads (11) are arranged at the tops of the clamping plates (12), the tops of the clamping plates (12) are movably connected with the bottoms of the rubber pads (11), a framework (13) is symmetrically arranged in the connecting plate (14), the inner wall of the connecting plate (14) is contacted with the outer surface of the framework (13), stabilizing pads (15) are uniformly arranged at the bottoms of the clamping plates (12), and the bottoms of the clamping plates (12) are fixedly connected with the tops of the stabilizing pads (15);
the contact device (7) comprises a contact frame (71), a guide cylinder (74) is arranged in the contact frame (71), the inner wall of the contact frame (71) is fixedly connected with the outer surface of the guide cylinder (74), flexible rods (73) are uniformly arranged in the guide cylinder (74), the inner wall of the guide cylinder (74) is contacted with the bottoms of the flexible rods (73), top plates (72) are arranged at the tops of the flexible rods (73), the tops of the flexible rods (73) are fixedly connected with the bottoms of the top plates (72), compression springs (75) are symmetrically arranged in the contact frame (71), the inner wall of the contact frame (71) is contacted with the outer surface of the compression springs (75), bases (76) are arranged at the bottoms of the compression springs (75), the bottoms of the compression springs (75) are fixedly connected with the tops of the bases (76), the number of the compression springs (75) is two, and the tops of the compression springs (75) are fixedly connected with the bottoms of the bottom plates (3).
2. The multi-path grating ruler signal acquisition and measurement device according to claim 1, wherein: the inside symmetry of bottom plate (3) is provided with swivel hinge (8), and the inner wall of bottom plate (3) and swivel hinge (8) both ends fixed connection.
3. The multi-path grating ruler signal acquisition and measurement device according to claim 2, wherein: the axle center department of bottom plate (3) bottom is provided with stabilizer (9), and the bottom of bottom plate (3) and the top fixed connection of stabilizer (9).
4. A multi-path grating ruler signal acquisition and measurement device according to claim 3, wherein: the stabilizing device (9) comprises a rotating ring (93), sliding blocks (94) are uniformly arranged in the rotating ring (93), the inner wall of the rotating ring (93) is movably connected with the two ends of the sliding blocks (94), supporting rods (92) are arranged on the outer surface of the sliding blocks (94), and the outer surface of the sliding blocks (94) is fixedly connected with the inner walls of the supporting rods (92).
5. The multi-path grating ruler signal acquisition and measurement device according to claim 4, wherein: the outer surface of bracing piece (92) is provided with rotary disk (91), and the outer surface of bracing piece (92) and the edge fixed connection of rotary disk (91), the bottom of rotary disk (91) evenly is provided with friction ring (95), and the bottom of rotary disk (91) and the top fixed connection of friction ring (95).
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