CN111238357A - Magnetic coding displacement measuring device suitable for heavy equipment - Google Patents
Magnetic coding displacement measuring device suitable for heavy equipment Download PDFInfo
- Publication number
- CN111238357A CN111238357A CN202010197801.7A CN202010197801A CN111238357A CN 111238357 A CN111238357 A CN 111238357A CN 202010197801 A CN202010197801 A CN 202010197801A CN 111238357 A CN111238357 A CN 111238357A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- accommodating grooves
- neodymium magnets
- aluminum alloy
- measuring device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model provides a magnetic encoding displacement measurement device suitable for heavy equipment, belongs to displacement measurement technical field. The magnetic coding displacement measuring device comprises a magnetic strip device and a magnetic encoder, wherein the magnetic strip device is arranged on a machine with the length to be measured, the magnetic strip device comprises an aluminum alloy strip and a plurality of neodymium magnets, the aluminum alloy strip is provided with accommodating grooves for accommodating the neodymium magnets, the width of the accommodating grooves and the distance between the accommodating grooves are equal, the neodymium magnets are sequentially and fixedly arranged in the accommodating grooves, and the magnetism of adjacent neodymium magnets is opposite; the magnetic encoder is fixedly arranged relative to the magnetic stripe device; the connecting line of the two Hall elements is parallel to the aluminum alloy strip. The invention inducts the distance of the moving displacement of the machine through the mutual matching of the magnetic stripe device and the magnetic encoder, has relatively accurate measurement precision, relatively simple structure, high reliability of the whole product and low cost. The invention is suitable for various heavy mechanical equipment with low requirement on measurement precision.
Description
Technical Field
The invention belongs to the technical field of displacement measurement, and particularly relates to a heavy displacement measuring device with low resolution and high reliability.
Background
Mechanical stroke measurement is a necessary specification requirement for many types of heavy equipment, and often such measurements do not require too high precision. But has extremely high requirements on long-term reliability, vibration resistance, high oil pollution environment and waterproof grade. The conventional measurement mode generally adopts a hysteresis displacement or pull rope displacement sensor, but hysteresis displacement products are expensive and limited in length. And the hysteresis displacement product is arranged in the hydraulic cylinder, and once damaged, the product cannot be maintained. In addition, various problems such as rope breakage and twisting of the rope displacement sensor of the hysteresis displacement product are easy to occur. On the other hand, the hysteresis displacement product has larger integral volume and is not suitable for integrated installation. The displacement measurement product with low cost, high reliability and small volume is urgently needed in the market.
Disclosure of Invention
In view of the above problems in the prior art, the present invention provides a magnetic encoding displacement measuring device suitable for heavy equipment.
Therefore, the invention adopts the following technical scheme: a magnetic coding displacement measuring device suitable for heavy equipment is characterized by comprising a magnetic stripe device and a magnetic encoder, wherein the magnetic stripe device is arranged on a machine with a length to be measured, the magnetic stripe device comprises an aluminum alloy belt and a plurality of neodymium magnets, the aluminum alloy belt is provided with accommodating grooves for accommodating the neodymium magnets, the width of the accommodating grooves and the distance between the accommodating grooves are equal, the neodymium magnets are sequentially and fixedly arranged in the accommodating grooves, and the magnetism of all adjacent neodymium magnets is opposite; the magnetic encoder is fixedly arranged relative to the magnetic stripe device;
the magnetic coding displacement measuring device also comprises two Hall elements, and the connecting line of the two Hall elements is parallel to the aluminum alloy belt.
When the machine with the length to be measured moves, the magnetic strip device moves relative to the magnetic encoder, and the moving position is output according to the magnetic change. The speed of movement can also be measured.
The neodymium magnetic block is sealed in the accommodating groove through glue.
The invention can achieve the following beneficial effects: the invention inducts the distance of the moving displacement of the machine through the mutual matching of the magnetic stripe device and the magnetic encoder, has relatively accurate measurement precision, relatively simple structure, high reliability of the whole product and low cost. The invention is suitable for various heavy mechanical equipment with low requirement on measurement precision, and in addition, the labor intensity of the existing manual measurement machine for length is greatly reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the principle of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
The description of the embodiments of the present invention is intended to be illustrative, and not to be construed as limiting the invention in any way, and any technical field in which the magnetically encoded displacement measuring device embodying the principles of the present invention is used is intended to be limited by the scope of the present invention.
As shown in fig. 1-2, the magnetic encoder comprises a magnetic stripe device and a magnetic encoder 1, wherein the magnetic stripe device is arranged on a machine with a length to be measured, the magnetic stripe device comprises an aluminum alloy belt 2 and a plurality of neodymium magnets 3, the aluminum alloy belt is provided with accommodating grooves 4 for accommodating the neodymium magnets, the widths of the accommodating grooves and the intervals between the accommodating grooves are equal, the neodymium magnets are sequentially and fixedly arranged in the accommodating grooves, and the magnetism of all adjacent neodymium magnets is opposite; the neodymium magnetic block is sealed in the accommodating groove through glue. The magnetic encoder is fixedly arranged relative to the magnetic stripe device; the magnetic coding displacement measuring device also comprises two Hall elements, and the connecting line of the two Hall elements is parallel to the aluminum alloy belt. When the machine with the length to be measured moves, the magnetic strip device moves relative to the magnetic encoder, and the moving position is output according to the magnetic change. The speed of movement can also be measured.
In describing the present invention, it is to be understood that this invention is presented merely to facilitate the description of the invention and to simplify the description and is not intended to indicate or imply that the apparatus or components referred to must be in a particular orientation, material, configuration and operation and therefore should not be considered as limiting. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the Hall element of the invention can be increased or decreased according to the precision and the use requirement, thereby improving the use range.
The use principle of the invention is as follows: the magnetic strip and the magnetic encoder are respectively arranged on two sides of the mechanical relative movement. Relative movement is generated between the two. When there is no movement, the output signal is 0. When the relative movement is generated, the magnetic encoder reads the change of the south pole and the north pole of the magnetic strip, the internal circuit automatically calculates the length according to the calculation setting, and outputs a numerical value. Because the direct distance between the south pole and the north pole is fixed, 1 bit is automatically added every time the NS is read out to change, and the final displacement changes by more than one bit, the output data is
And d, namely the actual displacement change value. (magnetic encoders are available on the market directly, and the specific internal structure of the magnetic encoder is not the scope of protection of the invention and therefore will not be described any more)
The invention also comprises two Hall elements, and the forward and backward can be judged through the Hall elements.
Basically judging a forward and backward movement method:
the distance of the hall elements may not be equal to d.
When the Hall element is at the position shown in the figure (between NS), the Hall element moves to the right, a magnetic block a at the right side is set, a magnetic block b at the left side is set, a firstly detects S, b detects N, and when the Hall element moves to the left, a detects N, b detects S, and the Hall element smoothly judges whether the Hall element moves to the left or the right. When the hall element is out of NS, the moving direction can be determined as well.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. 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 (2)
1. A magnetic coding displacement measuring device suitable for heavy equipment is characterized in that: the magnetic coding displacement measuring device comprises a magnetic strip device and a magnetic encoder, the magnetic strip device is arranged on a machine with a length to be measured, the magnetic strip device comprises an aluminum alloy belt and a plurality of neodymium magnets, the aluminum alloy belt is provided with accommodating grooves for accommodating the neodymium magnets, the width of the accommodating grooves and the distance between the accommodating grooves are equal, the neodymium magnets are sequentially and fixedly arranged in the accommodating grooves, and the magnetism of all adjacent neodymium magnets is opposite; the magnetic encoder is fixedly arranged relative to the magnetic stripe device;
the magnetic coding displacement measuring device also comprises two Hall elements, and the connecting line of the two Hall elements is parallel to the aluminum alloy belt.
2. A magnetically encoded displacement measuring device suitable for use in heavy equipment according to claim 1, wherein: the neodymium magnetic block is sealed in the accommodating groove through glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010197801.7A CN111238357A (en) | 2020-03-19 | 2020-03-19 | Magnetic coding displacement measuring device suitable for heavy equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010197801.7A CN111238357A (en) | 2020-03-19 | 2020-03-19 | Magnetic coding displacement measuring device suitable for heavy equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111238357A true CN111238357A (en) | 2020-06-05 |
Family
ID=70873793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010197801.7A Pending CN111238357A (en) | 2020-03-19 | 2020-03-19 | Magnetic coding displacement measuring device suitable for heavy equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111238357A (en) |
-
2020
- 2020-03-19 CN CN202010197801.7A patent/CN111238357A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108444628B (en) | Magnetoelastic torque sensor | |
| CN101328915A (en) | Adjusting element | |
| CN103557782B (en) | A kind of linear electric motors localization method based on switch Hall sensor sequential encoding | |
| CN211346681U (en) | Linear displacement absolute position encoder | |
| CN208419856U (en) | A kind of embedded hall displacement transducer of magnet and electronic hydraulic brake system | |
| CN105466374A (en) | Force-controllable size measurement device and using method thereof | |
| CN111238357A (en) | Magnetic coding displacement measuring device suitable for heavy equipment | |
| CN102252594A (en) | Draw bar displacement sensor | |
| CN212205958U (en) | Magnetic coding displacement measuring device suitable for heavy equipment | |
| CN103148774B (en) | Crane size automobile-used coordinate type relative displacement detection magnetic scale | |
| CN103808244A (en) | Magnetic encoder for position measurement | |
| CN207634444U (en) | A kind of absolute type ceramic cylinder rod displacement sensor | |
| CN112161560B (en) | Displacement sensing device and method based on permanent magnet flux measurement | |
| CN201561984U (en) | Device for detecting speed and position of movable object | |
| CN107906077A (en) | A kind of absolute type ceramic cylinder rod displacement sensor and its measuring method | |
| CN211346838U (en) | High-precision absolute position measuring system | |
| CN103090781A (en) | Magnetic-sensing sensor applied to lifting jack | |
| CN201159631Y (en) | Detection apparatus for hydraulic support linear displacement transducer | |
| CN203024725U (en) | Magneto-dependent sensor applied to jacks | |
| CN107250730B (en) | Method for measuring object displacement | |
| CN105222698A (en) | A kind of linear displacement transducer based on becoming reluctance principle | |
| CN210689504U (en) | Magnetostatic grid position detection mechanism | |
| CN206019560U (en) | A kind of absolute value magnetic grid displacement measurement system | |
| CN2702284Y (en) | Intelligent bob type water level meter | |
| CN204188178U (en) | Photoelectric two-dimensional scrambler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |