CN206803946U - A kind of motor synchronizing bar code displacement transducer - Google Patents
A kind of motor synchronizing bar code displacement transducer Download PDFInfo
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- CN206803946U CN206803946U CN201720609324.4U CN201720609324U CN206803946U CN 206803946 U CN206803946 U CN 206803946U CN 201720609324 U CN201720609324 U CN 201720609324U CN 206803946 U CN206803946 U CN 206803946U
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Abstract
The utility model discloses a kind of motor synchronizing bar code displacement transducer, there is specific one-dimensional bar code tape including one, towards the reading box of specific one-dimensional bar code, reading box and the coding of tape relative movement progress absolute location information read so as to measure absolute location information one reading plotter；The coding reads sensor and is based on intelligent image treatment technology and striped differential principle, by the coding containing absolute location information, expressed using specific one-dimensional bar code, and read by reading box, it can accurately measure the displacement and absolute position values of object, almost the unrestricted tape is flexible tape to its range, straight line or curvilinear path can be followed to install, the contactless friction of relative motion, it is adaptive to read gap, code length can be widely applied to the field such as water conservancy and hydropower, industrial and mining enterprises, communications and transportation, green, war industry equipment almost without limitation.
Description
Technical field
A kind of new absolute type motor synchronizing bar code displacement transducer is the utility model is related to, belongs to technology of instrument and meter
Non-contact displacement transducer in field.
Background technology
In Modern Water Conservancy engineering, measuring the displacement sensor device of gatage has a variety of forms, can substantially divide such as
Lower three kinds：Wire rope rotating encoder, black ceramic piston rod add CMS stroke detections, the contactless displacement transducer of rigidity.
Wire rope rotating encoder displacement sensor device is product ripe earliest in hydraulic engineering, and it utilizes steel wire rope
Roller girth measures the length of object and distance, and its main building block is rotary encoder, constant force spring, steel wire rope and volume
Cylinder.Installation of the steel wire rope sensor on gate oil cylinder is divided into built-in and external.Built-in operation principle is to use steel wire
Rope is used as driving member, and one end is connected with cylinder piston rod, and the other end is wrapped on reel, and Mainspring type constant force bullet is housed on reel
Spring, control steel wire rope are stretched back and forth with the piston movement of piston rod, and gatage is exported on the rotary encoder of reel connecting shaft
Data.Which shortcoming is maintenance trouble, once there is spring backrush power deficiency, steel wire rope, which is pulled off, to be pulled in oil cylinder
Wall, not only needs more emat sensor in itself, especially needs detachable maintaining oil cylinder, costly.Although external steel wire rope sensor is tieed up
Repair conveniently, but its is affected by environment larger, especially in steel wire rope encroached water when, water impact, floater, water-ice freeze etc.
Factor causes measurement to be obstructed.
Black ceramic CMS device for detecting distance of travel small volumes, combined installed in oil cylinder outer front end with black ceramic piston rod
Portion.His operation principle is that piston rod has done quarter ring cutting pretreatment before ceramic coated, and CMS device for detecting distance of travel is by adopting
The pulse signal for collecting the movement of these annular grooves determines stroke.Black ceramic CMS device for detecting distance of travel shortcomings are that it is incremental
Coding, needs to detect since zero-bit again after power-off, and this is a major defect in commercial Application environment.
The contactless displacement transducer of rigidity is common for magnetostrictive technology, such sensor mostly using built-in, its
Principle is that waveguide moves in magnetic field and sends electric signal to determine displacement.This kind of sensor shortcoming has：It is longer to detect length,
Error is bigger, and stroke detection at present is mostly in 5 meters, and stroke is long also restricted to cylinder efficient state, and oil cylinder is excessively horizontal
Waveguide can be caused to be worn because of amount of deflection, shorten the service life of sensor, later maintenance is inconvenient.
Utility model content
The technical problems to be solved in the utility model is that above-mentioned for prior art uses defect, is proposed a kind of new
Non-contact type motor synchronizing bar code displacement transducer, realize absolute position read, be not afraid of power down；Simultaneously theoretical code length without
Limitation, can be used for rigidity measurement can be used for flexible measuring, and reading accuracy is high, it is possible to achieve the reading of big stroke and microspur
Take；Applicability is wide.
The utility model is in order to solve the above technical problems, adopt the following technical scheme that：
A kind of motor synchronizing bar code displacement transducer, including tape and moveable reading head；Reading head is separated by with tape
Set and include camera device, it is characterised in that：Tape is arranged to camera device towards the surface of camera device to be identified
Specific one-dimensional bar code；The specific one-dimensional bar code, in tape length range it is continuously distributed it is a plurality of it is chequered with black and white,
The more bar codes that width differs are arranged parallel to each other the fixed number position of composition, non-duplicate rolling absolute coding, every bar shaped code length
Degree matches with camera device view-finder size.
Further, display screen, function button, microUSB data-interfaces, signal lamp are also set up on reading head, is read
Several lower surfaces set the camera devices, reading head be fixed on it is in the mobile device of test system displacement synchronous or directly solid
It is scheduled in test system；Tape is arranged in the fixed component of tested displacement machine device, and length direction moves with Kinematic part
Direction is consistent.
Further, camera device remains parallel along direction where tape length surface with tape, and camera device is read
Moving direction is consistent with tape length direction during code.
Further, the specific one-dimensional bar code, minimum unusual fluctuation is encoded at intervals of two bar code centers of arbitrary neighborhood
Axis spacing, coding theory displacement resolution are corresponding with this spacing；The rolling absolute coding, i.e. camera device view-finder are moving
Go out coding first place while move into end and form this newly encoded or opposite motion process.
Further, in the specific one-dimensional bar code, every bar code includes at least one unit informal voucher code or unit
The width of secret note code, unit informal voucher code or unit secret note code is equal, is to compile symbol value number, the volume symbol value number and coding theory
Displacement resolution is related, and is determined by camera device accuracy of identification.
Further, the tape is made of the film of PC materials, is installed suitable for plane or curved surface, and being capable of spacing
From being spliced；The specific one-dimensional bar code is printed upon in tape by UV, and tape is attached to the fixed part of tested machine
On part, length direction is consistent with the Kinematic part direction of motion.
Further, camera device is ccd video camera.
The displacement detecting method of above-mentioned motor synchronizing bar code displacement transducer is as follows：
During work, it is tested displacement machine device or the device synchronous with tested displacement machine device drives reading head motion, reading head
Camera device reads the specific one-dimensional bar code in tape, obtains the absolute position residing for current reading head, i.e., tested displacement machine
The current location of device, difference is to detect displacement result between current location and original position.
Further, in reading process, reading head successively carries out integer in setting time and read and decimal reading, reading
After continue to move to and real-time update；Reading head or camera device are in moving process by taken specific one-dimensional barcode
Code directly carries out carrying out integer reading after simulation turns coding；Decimal reading process is based on intelligent image treatment technology and striped difference
Principle, after the analog-converted coding containing absolute location information, read in moving process using the movement of striped differential principle.
Further, integer reading process is：The digit suitable with reading fringe zone length of the special dimension bar code of original position
Binary coding information, into after the view-finder of camera device namely reading fringe region, reading head exports the position
Absolute position values；When camera device obtains specific bar code, while also convert and to generate chequered with black and white, width equal equal
For the simulation striped of a millimeters, the absolute position values of acquired position are then calculated by simulating striped；When reading head moves right
When reaching new position after dynamic setpoint distance, binary newly encoded information of digit suitable with reading fringe zone length is obtained,
The newly encoded information just corresponds to the absolute position after now setpoint distance；The setpoint distance is encoding precision；Pass through start bit
Put the absolute displacement of absolute position mathematic interpolation with new position；
Decimal reading process is：
Will be specific taken by view-finder or reading fringe region first in original position reading head or camera device
One-dimensional bar code carries out analog-converted, forms the equal in width simulation striped that black and white strip width is a millimeters；
Simulate again a lot of overall width with simulate striped overall width it is suitable, arrange from left to right include black streaking and informal voucher
The difference striped of line, black streaking width is a millimeters in the difference striped, and white width of fringe is b millimeters, b ＜ a；
Finally, from left to right, first black streaking of difference striped is alignd with first black streaking in simulation striped,
The black streaking of difference striped is alignd with simulation the N articles informal voucher line of striped, then can now obtain difference striped white width of fringe b and
Striped difference accuracy is
Difference striped is moved with reading head and finally overlapped with simulation striped, starts the exhausted of fractional part in the process
Position is identified and calculated.
Further, some technical term lexical or textual analysis in the utility model are as follows：
" motor synchronizing " lexical or textual analysis is as follows：
Because reading head is the binary system that the digit that is consistent with view-finder size is from left to right read from reading frame all the time, institute
As long as so that clearly picture can be photographed within the scope of the camera automatic focusing of reading head, longitudinally namely perpendicular to tape surface
Shake be not influence the degree of accuracy of reading, so referred to as motor synchronizing.
" specific one-dimensional bar code " lexical or textual analysis is as follows：
For general one-dimensional bar code with chequered with black and white, it is various to defer to standard up to numeral for the striped coding schedule that width differs.But nothing
By which kind of standard deferred to, " initial code "-" numeric data code "-" end code " form is used.Specific one-dimensional bar for displacement detecting
Shape code, for more striped pole strip shape codes of the distributing installation in the range of useful range, its length range is preferably at 40 to 60 millimeters
Between, limited by ccd video camera window dimension, displacement is understood advantageously using specific one-dimensional bar code.
Specific one-dimensional bar code is that the bar shaped code length array that continuous a plurality of chequered with black and white, width differs is arranged parallel to each other structure
Into every bar code includes at least one unit informal voucher code or unit secret note code, the width or unit secret note code of unit informal voucher code
Width it is equal；The width of unit informal voucher code or the width of unit secret note code are volume symbol value, and compiling symbol value can original definition
For the Arbitrary Digit among 2~9, show to participate in the primitive number of coding, this number, limited by ccd video camera resolution ratio.For example,
When volume symbol value takes 3, the primitive number for participating in coding is 3, and motor synchronizing bar code should mutually have 3 kinds of different line widths；Such as when coding member
When value takes 5, the primitive number for participating in coding is 5, and motor synchronizing bar code should mutually have 5 kinds of different line widths；
Motor synchronizing bar code displacement transducer is with the positioning of absolute position bar code plus difference mechanism for resolving cooperation.
Ccd video camera form is limited in long flat view-finder, with the fast and effective tracking of intelligent focusing system, the encoding strip number of intake
Image clearly when ensureing that the gap between video camera and tape fluctuates widely, can be collected, bar number is equal with self-defining
And efficient coding striped placed in the middle.
The original print coding of strip encoding, is obtained using high-speed computer by specific tentative calculation program, and it is a lot of
Fixed number position, it is non-duplicate, roll absolute coding, encode minimum unusual fluctuation at intervals of two bar code central axis spacing of arbitrary neighborhood,
Coding theory displacement resolution is corresponding with this spacing.
So-called rolling coding, imply that CCD view-finders remove it is the first and meanwhile move into end formed it is newly encoded or conversely
This motion process.
In summary, the utility model discloses a kind of new absolute type motor synchronizing bar code displacement transducer, including
One tape, a reading box.The tape base material is PC films, and specific one-dimensional bar code is printed on into it using UV printers
On face, the reading box is the reading of specific one-dimensional bar code and processing system, has display screen etc. above, there is ccd video camera below.
Tape is affixed in the fixed component of tested displacement machine device using gluing mode, specific one-dimensional bar code taking the photograph towards reading box all the time
Camera.During work, it is tested displacement machine device and drives the motion of reading box, ccd video camera reads the specific one-dimensional bar code in tape, obtained
Obtain the absolute position residing for current ccd video camera, i.e., the current location of tested displacement machine device.
The tape is flexible tape, and straight line or curvilinear path can be followed to install, the contactless friction of relative motion, read gap
Adaptively, code length can be widely applied to water conservancy and hydropower, industrial and mining enterprises, communications and transportation, green, army almost without limitation
The fields such as frock is standby.
Tape can such as be arranged on to water conservancy and hydropower gate edge, the lifting displacement of direct measurement gate plane or arcwall face,
Can solve the various defects of existing displacement transducer well.
Relative to prior art, the utility model reads principle using specific one-dimensional bar code, and it is new certainly to develop one kind
Synchronous bar code displacement transducer, the motor synchronizing bar code displacement transducer is based on intelligent image treatment technology and striped difference is former
Reason, the coding containing absolute location information is expressed using specific one-dimensional bar code, and is read by reading box, can essence
Really the displacement and absolute position values of measurement object, its range are almost unrestricted.It has bright than existing displacement transducer
Aobvious advantage and beneficial effect：
1st, absolute reading code, does not influence reading after power down；
2nd, it is easy for installation, only need external fixed reading box to complete to install with tape；
3rd, convenient later maintenance, tape setting distance from being spliced, at one breakage pulled down without whole piece tape, only need to change
Corresponding region tape；
4th, have a wide range of application, flexible tape can curved surface attach, suitable for multi-motion track occasion；
5th, in some specific application areas, during such as water conservancy and hydropower gate vertical lifting, the shake of gate left and right directions is very serious,
A variety of displacement detecting products on the market can not solve larger error in reading and the bounce that shake is brought very well at present.Because this
The reading head of utility model is the binary system that the digit that is consistent with view-finder size is from left to right read from reading frame all the time, so
As long as clearly picture can be photographed within the scope of the camera automatic focusing of reading head, longitudinally namely perpendicular to tape surface
Shake is not influence the degree of accuracy of reading.
Brief description of the drawings
Fig. 1 is the three-dimensional view of the utility model motor synchronizing bar code displacement transducer.
Fig. 2 is the counting principle figure of the utility model motor synchronizing bar code displacement transducer.
Fig. 3 is that the simulation striped 12 in the utility model motor synchronizing bar code displacement transducer striped differential principle figure is formed
Figure.
Fig. 4 is simulation striped 12 in the utility model motor synchronizing bar code displacement transducer striped differential principle figure and poor
The combination figure of fractional fringes 13.
Fig. 5 is difference move of stripe process of the utility model motor synchronizing bar code displacement transducer in reading process
Figure.
In Fig. 1-5, each reference corresponds to as follows：1st, tape；2nd, specific one-dimensional bar code；3rd, reading box；4th, display screen；
5th, bar code reading device；6th, function button；7th, microUSB data-interfaces；8th, signal lamp；The 9th, fixing hole is installed；10th, read
Take fringe area；11st, coding information；12nd, striped is simulated；13rd, difference striped.
Embodiment
Motor synchronizing bar code displacement sensor structure schematic diagram of the present utility model as shown in figure 1, the utility model from same
Bar code displacement transducer is walked, includes reading box 3, tape 1, the specific one-dimensional bar code 2 being imprinted in tape.The reading box
3 is separated by a distance with tape 1, and remains parallel, and the direction of motion of reading box 3 is consistent with the length direction of tape 1.Wherein,
Reading box 3 includes display screen 4, function button 6, microUSB data-interfaces 7, signal lamp 8 above, is mounted below bar
Code reading device 5 (being ccd video camera in the present embodiment), the right and left have 2 installation fixing holes 9 respectively.
In the present embodiment, the tape 1 has good pliability, suitable for plane or song using the film of PC materials
Face is installed, and setting distance is from being spliced.Its base material weatherability is good, can be chronically in outdoor adverse circumstances and use.It is specific
One-dimensional bar code 2 uses chequered with black and white, the specific one-dimensional bar code coded system that width differs, through striped difference Intelligent treatment
Afterwards, its Measurement Resolution is up to 0.1 millimeter, the theory unlimited system of code length.Specific one-dimensional bar code 2 is beaten by UV printers
It is imprinted in tape 1.Tape 1 is attached in the fixed component of tested machine with gluing mode, length direction and Kinematic portion
The part direction of motion is consistent.
Reading box 3 is this Sensor core intelligently solution read apparatus.In Fig. 1 embodiment, reading box 3 is solid by 4 installations
Determine hole 9 to be fixed on the movable part of tested machine, have the one of bar code reading device 5 facing to tape 1, and keep a spacing
From reading box 3 parallel to tape 1 and reads specific one-dimensional bar code 2 all the time during having a machine in operation.
In the present embodiment, three function buttons 6 respectively " switch ", " reset/clearing ", " setting/note on reading box 3
Recall ", " switch " button control bar code reading device switch, (whether should be bar code reading device, or other what sensors
If please express) " reset/clearing " button be used for control position to reset, " setting/memory " button be used for store-memory measurement number
According to this and whether the operations such as other functions select, three signal lamps 8 can be used for display sensor bar code reading device 5 normal
Work, functional mode prompting, button prompts etc., display screen 4 then more intuitively shows present position values, battery electric quantity, unit
The operation display of the various functions such as switching, mode of operation.
Operation principle of the present utility model is：
Specific one-dimensional bar code 2 is continuous unduplicated barcode encoding, defines bar code reading device 5 and readsMIndividual unit bar
Code, each unit bar code is black or white and width is a millimeters, and unit informal voucher code is Binary Zero, and unit secret note code is binary one,
In the moving process of reading box 3,MIn individual unit bar code, while first place removes a unit bar code, end moves into a unit bar
Code, so as to form new coding, so continuous unduplicated code capacity n=2MIt is individual.
As shown in Fig. 2 in the present embodiment, the reading fringe region 10 of bar code reading device 5 is specific for reading in real time
One-dimensional bar code 2, the reading length in reading fringe region 10 is 16 unit bar codes, that is, reads 16 binary coding informations
11, the coding information 11 just corresponds to the positional information in algorithm, when the 16 binary codings that have read Fig. 2 left figures position
After information 11, reading box 3 is the absolute position values for exporting Fig. 2 left figures position, after reading head 3 moves right a millimeters, is reached
During Fig. 2 right figures, coding information 11 corresponding to 16 new binary codings is obtained, the new coding information 11 has just corresponded to this
Absolute position after Shi Yidong a millimeters.By that analogy, when 3 every positions of reading box, one can be corresponded to and do not repeated
Binary coding, that is, export the absolute position of the position, while will also realize that the encoding precision is a millimeters.
In reading process, reading box 3 successively carries out integer reading in very short time and decimal is read, and in moving process
In constantly carry out integer read and decimal reading process, the displacement that real-time update detects.
In integer reading process, CCD obtain specific bar code 2 when, while also converted and generate it is chequered with black and white, it is wide
Degree is a simulation striped 12 (such as Fig. 3), then calculates the absolute location information of the position by simulating stripe information, then lead to
The difference of original position and new position is crossed, calculates absolute displacement.
Integer part read-out resolution only has a, to obtain higher precision, in the integer reading of the certain precision of above-mentioned acquisition
Intelligent difference processing is carried out to the striped of the specific one-dimensional bar code 2 of non-duplicate continuous programming code state on the basis of process, so as to
Carry out the reading of fractional part.
Reading principles and methods of the present utility model are illustrated in figure 3, will be specific taken by it first in reading box 3
One-dimensional bar code 2 (Fig. 3 upper parts) carries out analog-converted, forms the equal in width simulation striped that black and white strip width is a millimeters
12 (Fig. 3 lower parts), then in enlarged drawing as shown in Figure 4, then a lot of difference striped 13 is simulated, it is black in the difference striped 13
Width of fringe is a millimeters, and white width of fringe is b millimeters, b ＜ a；Finally, from left to right, by first secret note of difference striped 13
Line aligns with first black streaking in simulation striped 12, makes the black streaking and simulation the N bars informal voucher of striped 12 of difference striped 13
Line aligns, then can now obtain the white width of fringe b of difference striped 13：
Then now striped difference accuracy is：
In the present embodiment, N is natural number, takes N=10, a=1mm, and (a scope can be 0-10mm in theory, this reality
Apply example and take 1mm) then 13 white width of fringe of difference striped be 0.9mm, now difference accuracy is 0.1mm.Fig. 2 integer part is read
Afterwards, difference striped 13 is moved with reading box 3 and overlapped with simulation striped 12, starts the identification of fractional part.Such as Fig. 5, by (a) to
(c) three figures are the start to finish that difference striped 13 moves in the range of 1mm, and the black streaking of difference striped 13 is respectively gradually and mould
The informal voucher line intended in striped 12 overlaps, such as second figure in Fig. 5, the black streaking of difference striped 13 and the in simulation striped 12
4 informal voucher lines coincide, then now fractional part reading in absolute position is 0.4mm.When obtaining specific bar code 2 due to CCD,
Also converted simultaneously and generate chequered with black and white, width is a simulation striped 12 (such as Fig. 3), and difference striped 13 is by computer
Generation, and all the time with reading box geo-stationary, read fractional part when, equivalent to " finite length " difference striped 13 and " nothing
Limit for length's degree " simulation striped 12 overlap, to every a millimeters carry out difference reading.
Thus, the utility model carries out the reading embodiment of integer precision by above-mentioned continuous unduplicated barcode encoding,
And the embodiment that integer precision and decimal precision combine, intelligent difference processing is recognized in non-duplicate continuous programming code displacement and differentiated
Further refined on the basis of rate, it is in the nature the smart electronicsizationes processing of mechanical slide measure difference micrometer mechanism.
For the utility model compared with other prior arts, its advantage is as follows：
1st, while bar code reading device moves, contactless tape is arranged in the form of specific one-dimensional bar code
In the shift motion of bar code reading device, specific one-dimensional bar code does not repeat continuously, realizes the simultaneous of big stroke and micro-stroke
Hold, wide adaptability.
2nd, the reading of integer precision is carried out using continuous unduplicated barcode encoding, and identification point is being moved in non-duplicate code bit
Bar code intelligent difference processing is carried out on the basis of resolution and carries out decimal precision identification, realizes and is surveyed based on mechanical slide measure difference
The smart electronicses processing mode of micro- principle, reading accuracy are high.
3rd, using absolute addressing mode, reading is not influenceed after power down.The reading in the reading fringe region of bar code reading device
Length is corresponding with the absolute location information of bar code；After have read binary coding information of original position, reading box is defeated
Go out the absolute position values of the position, when reaching new barcode position after reading head moves a width of fringe, obtained newly
Coding information corresponding to binary coding, the new coding information just correspond to the absolute position after now moving.
4th, theoretical code infinite in length system, as long as tape carrier is supported, the displacement measurement available for extra long distance.
5th, simple in construction, reading device configures compact processor by ccd video cameras and can be achieved, and tape carrier is easy to make
Acquisition is made, to the less demanding of space enrironment, wide application, simple installation during setting.
6th, it is easy to manufacture and assemble, it is cheap prepares maintenance cost.
Claims (7)
1. a kind of motor synchronizing bar code displacement transducer, including tape and moveable reading head；Reading head is separated by with tape to be set
Put and include camera device, it is characterised in that：Tape is arranged to what camera device can identify towards the surface of camera device
Specific one-dimensional bar code；The specific one-dimensional bar code, to be continuously distributed a plurality of chequered with black and white, wide in tape length range
The narrow more bar codes to differ are arranged parallel to each other the fixed number position of composition, non-duplicate rolling absolute coding, every Barcode Length
Matched with camera device view-finder size.
2. motor synchronizing bar code displacement transducer according to claim 1, it is characterised in that：Display is also set up on reading head
Screen, function button, microUSB data-interfaces, signal lamp, the reading head lower surface setting camera device, reading head are solid
It is scheduled on and in the mobile device of test system displacement synchronous or is directly anchored in test system；Tape is arranged at tested displacement machine
In the fixed component of device, length direction is consistent with the Kinematic part direction of motion.
3. motor synchronizing bar code displacement transducer according to claim 1, it is characterised in that：Camera device is along tape surface
Direction where length remains parallel with tape, and moving direction is consistent with tape length direction during camera device reading code.
4. motor synchronizing bar code displacement transducer according to claim 1, it is characterised in that：The specific one-dimensional barcode
Code, encode minimum unusual fluctuation at intervals of two bar code central axis spacing of arbitrary neighborhood, coding theory displacement resolution with around here
Away from corresponding；The rolling absolute coding, i.e. camera device view-finder remove coding it is the first move into simultaneously end formed it is newly encoded
Or this opposite motion process.
5. motor synchronizing bar code displacement transducer according to claim 1, it is characterised in that：The specific one-dimensional bar code
In, every bar code includes the width of at least one unit informal voucher code or unit secret note code, unit informal voucher code or unit secret note code
It is equal, it is to compile symbol value number, the volume symbol value number is related to coding theory displacement resolution, and by camera device accuracy of identification
It is determined that.
6. motor synchronizing bar code displacement transducer according to claim 1, it is characterised in that：The tape uses PC materials
Film be made, installed suitable for plane or curved surface, and can set a distance be spliced；The specific one-dimensional bar code passes through UV
It is printed upon in tape, tape is attached in the fixed component of tested machine, length direction and the Kinematic part direction of motion
Unanimously.
7. motor synchronizing bar code displacement transducer according to claim 1, it is characterised in that：Camera device images for CCD
Machine.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014298A (en) * | 2017-05-27 | 2017-08-04 | 武汉静磁栅机电制造有限公司 | A kind of motor synchronizing bar code displacement transducer and its measuring method |
| CN112595239A (en) * | 2020-12-11 | 2021-04-02 | 中车长春轨道客车股份有限公司 | Positioning system for automatic coating operation of railway vehicle |
-
2017
- 2017-05-27 CN CN201720609324.4U patent/CN206803946U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014298A (en) * | 2017-05-27 | 2017-08-04 | 武汉静磁栅机电制造有限公司 | A kind of motor synchronizing bar code displacement transducer and its measuring method |
| CN107014298B (en) * | 2017-05-27 | 2024-01-23 | 武汉静磁栅机电制造有限公司 | Self-synchronizing bar code displacement sensor and measuring method thereof |
| CN112595239A (en) * | 2020-12-11 | 2021-04-02 | 中车长春轨道客车股份有限公司 | Positioning system for automatic coating operation of railway vehicle |
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