CN109375039A - A kind of photoelectric sensor Quick cable checking device - Google Patents
A kind of photoelectric sensor Quick cable checking device Download PDFInfo
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- CN109375039A CN109375039A CN201811451564.1A CN201811451564A CN109375039A CN 109375039 A CN109375039 A CN 109375039A CN 201811451564 A CN201811451564 A CN 201811451564A CN 109375039 A CN109375039 A CN 109375039A
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- 238000012545 processing Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 4
- 210000001367 artery Anatomy 0.000 claims 1
- 210000003462 vein Anatomy 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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Abstract
The invention discloses a kind of photoelectric sensor Quick cable checking devices, including backboard, terminal block, switch batching counter and view display are provided on backboard, the quantity of terminal is greater than or equal to the quantity of cable in encoder in the terminal block, ensure that all cables of encoder can access terminal block simultaneously, the output end of each terminal is connect with the input end signal of switch batching counter simultaneously in the terminal block, and the input end signal of the output end and view display that switch batching counter connects.The beneficial effects of the present invention are: each cable high-low-position in photoelectric encoder can be determined quickly, only need to complete for 5 minutes the school line operation an of photoelectric encoder, time saving, laborsaving and accuracy rate is high, primary school line completion rate is up to 100%, photoelectric encoder is set correctly and rapidly to access mine slot feeding control system, ensure the normal feeding of blast furnace, reaching reduces the purpose that equipment is mistaken, and it is smooth to guarantee that blast fumance is stablized.
Description
Technical field
The present invention relates to the technical fields of ironmaking feeding system photoelectric encoder control, and in particular to a kind of photoelectric sensor
Quick cable checking device.
Background technique
In iron-smelting process, mine slot feeding control system is one of key equipment of blast furnace ironmaking.Currently, mine slot feeding control
Master winch, stock rod, distributing device in system processed all can be using calculating the physical location of truck, the height of charge level with photoelectric encoder
Degree, the circle number of cloth and cloth angle, when photoelectric encoder breaks down, such data cannot normally show that this will
Influence the normal smelting of blast furnace;To guarantee blast fumance stable smooth operation, when photoelectric encoder breaks down, need quickly to event
Barrier photoelectric encoder is replaced.Before photoelectric encoder replacement, need to carry out school line to photoelectric encoder, it may be assumed that determine photoelectricity
The high-low position of each cable in encoder.But due to the color of the cable of photoelectric encoder used in current only have it is red
Yellow dichromatism leads to, time-consuming and effort big to the school line difficulty of photoelectric encoder, completes the school line operation an of photoelectric encoder most
30 minutes are needed less, and cannot be guaranteed accuracy rate, greatly affected blast fumance stable smooth operation.
Summary of the invention
The object of the present invention is to provide a kind of photoelectric sensings that can quickly determine each cable high-low-position in photoelectric encoder
Device Quick cable checking device.
To achieve the above object, present invention employs following technical solutions: a kind of photoelectric sensor fast line correcting
Device, including backboard are provided with terminal block, switch batching counter and view display, terminal in the terminal block on backboard
Quantity be greater than or equal to encoder in cable quantity, it is ensured that all cables of encoder can access terminal block simultaneously,
The output end of each terminal is connect with the input end signal of switch batching counter simultaneously in the terminal block, switchs the defeated of batching counter
The connection of the input end signal of outlet and view display;The switch batching counter each terminal when can be rotated to encoder input shaft
The switching value pulse number that the encoder cable of corresponding access generates count and Real-time Feedback is to view display;It is described
View display can display real-time the switching value pulse number that the encoder cable of the corresponding access of each terminal of terminal block generates.
Further, a kind of photoelectric sensor Quick cable checking device above-mentioned, in which: switch the structure packet of batching counter
It includes: digital quantity receiving module, processing module, communication module and power module, the output end of the digital quantity receiving module and place
The input end signal connection of module is managed, the output end of processing module and the input end signal of communication module connect, communication module
Output end is connect with view display signal, the power module simultaneously with digital quantity receiving module, processing module and communication mould
Block is connected, thus for digital quantity receiving module, processing module and communication module power supply.
Further, a kind of photoelectric sensor Quick cable checking device above-mentioned, in which: number is provided on view display
Value empties button, when click numerical value empties button, the coding of the corresponding access of each terminal of terminal block shown on view display
The switching value pulse number that device cable generates can be emptied.
Further, a kind of photoelectric sensor Quick cable checking device above-mentioned, in which: be provided with out on view display
Beginning count button starts counting button and connect with switching value counter signals, can be to switch when starting counting button and being clicked
Batching counter transmission starts counting signal, switch batching counter receives start counting signal after start to each terminal pair of terminal block
The switching value pulse number that the encoder cable that should be accessed generates is counted.
Further, a kind of photoelectric sensor Quick cable checking device above-mentioned, in which: be provided with and stop on view display
Only count button stops count button and connect with switching value counter signals, can be to switch when stopping count button and being clicked
Batching counter, which is sent, stops count signal, and switch batching counter stops after receiving stopping count signal to each terminal pair of terminal block
The switching value pulse number that the encoder cable that should be accessed generates is counted.
Through the implementation of the above technical solution, the beneficial effects of the present invention are: each electricity in photoelectric encoder can be determined quickly
Cable high-low-position, it is only necessary to the school line operation an of photoelectric encoder can be completed within 5 minutes, time saving, laborsaving and accuracy rate is high, and one
Secondary school line completion rate enables photoelectric encoder correctly and rapidly to access mine slot feeding control system, it is ensured that blast furnace is just up to 100%
Normal feeding, reaching reduces the purpose that equipment is mistaken, and it is smooth to guarantee that blast fumance is stablized.
Detailed description of the invention
Fig. 1 is a kind of principle schematic diagram of photoelectric sensor Quick cable checking device of the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
As shown in Figure 1, a kind of photoelectric sensor Quick cable checking device, including backboard 1, it is provided on backboard 1
Terminal block 2 switchs batching counter 3 and view display 4, and the quantity of terminal is greater than or equal in encoder 5 in the terminal block 2
The quantity of cable 6, it is ensured that all cables 6 of encoder 5 can access terminal block 2 simultaneously, each terminal in the terminal block 2
Output end is connect with the input end signal of switch batching counter 3 simultaneously, switchs the output end and view display 4 of batching counter 3
Input end signal connection;The coding of the switch batching counter 3 each terminal corresponding access when can be rotated to 5 input shaft of encoder
The switching value pulse number that device cable 6 generates count and Real-time Feedback is to view display 4;The view display energy
The switching value pulse number that the encoder cable 6 of the corresponding access of each terminal of real-time display terminal block 2 generates;In the present embodiment
In, the structure of switch batching counter 3 includes: digital quantity receiving module 31, processing module 32, communication module 33 and power module
34, the output end of the digital quantity receiving module 31 is connect with the input end signal of processing module 32, the output of processing module 32
End is connect with the input end signal of communication module 33, and the output end of communication module 33 is connect with 4 signal of view display, the electricity
Source module 34 is connected with digital quantity receiving module 31, processing module 32 and communication module 33 simultaneously, to receive for digital quantity
Module 31, processing module 32 and communication module 33 are powered, and above-mentioned switching value counter structure is simple, are dismounted easy to maintenance;At this
In embodiment, it is provided with numerical value on view display 4 and empties button 7, when click numerical value empties button 7, view display 4
The switching value pulse number that the encoder cable 6 of the corresponding access of each terminal of terminal block 2 of upper display generates can be emptied, in this way
Staff can be made more intuitively to read each switching value pulse number to each cable of school linear light photoelectric coder, further
Improve photoelectric encoder school line efficiency;In the present embodiment, it is provided on view display 4 and starts counting button 8, started
Count button 8 is connect with switch 3 signal of batching counter, can be sent to switch batching counter 3 when starting counting button 8 and being clicked
Start counting signal, switch batching counter 3 receives start counting signal after start volume to the corresponding access of each terminal of terminal block 2
The switching value pulse number that code device cable 6 generates is counted, and photoelectric encoder school line efficiency can be improved in this way, make work
Personnel more quickly determine the high-low-position sequence of each cable of encoder;In the present embodiment, it is provided on view display 4
Stop count button 9, stops count button 9 and connect with switch 3 signal of batching counter, the meeting when stopping count button 9 and being clicked
It is sent to switch batching counter 3 and stops count signal, switch batching counter 3 stops after receiving stopping count signal to terminal block
The switching value pulse number that the encoder cable 6 of the corresponding access of 2 each terminals generates is counted, and can be further improved in this way
Photoelectric encoder school line efficiency makes staff more quickly determine the high-low-position sequence of each cable of encoder;
Working principle of the present invention is as follows:
All cables 6 of the photoelectric encoder 5 after replacement are first accessed into terminal block 2 simultaneously;Then it clicks on view display 4
Numerical value empty button 7, the raw value shown on view display 4 is purged, then 5 input shaft of rotary encoder,
And click start counting button 8 on view display 4 simultaneously, it can be counted to switching value when starting counting button 8 and being clicked
The transmission of processing module 32 in device 3 starts counting signal, and the processing module 32 in switch batching counter 3, which receives, starts counting letter
After number, each terminal of terminal block 2 corresponding access when to the received encoder input shaft rotation of 31 institutes of digital quantity receiving module can be started
The switching value pulse number that generates of encoder cable 6 counted, and by the encoder of the corresponding access of each terminal of terminal block 2
The switching value pulse number that cable 6 generates is sent in view display 4 by communication module 33, and view display can be real-time
Show the switching value pulse number that the encoder cable 6 of the corresponding access of each terminal of terminal block 2 generates;
After the rotation of 5 input shaft of encoder is not less than a circle, stops operating and 5 input shaft of encoder and click on view display 4
Stopping count button press 9, when stop count button 9 be clicked when can to switch batching counter 3 send stop count signal, switch
Batching counter 3 stops the generation of encoder cable 6 to the corresponding access of each terminal of terminal block 2 after receiving stopping count signal
Switching value pulse number is counted, and can be shown on view display 4 at this time from switch batching counter 3 from starting counting stopping
In this period of counting, the switching value pulse number of the generation of encoder cable 6 of the corresponding access of each terminal of terminal block 2;
Then the numerical values recited of each 6 switching value pulse number of cable of encoder shown according to view display 4, to encoder
Each cable 6 is numbered, and specific numbering principle is: the numerical value of the switching value pulse number of cable is bigger, then corresponding volume
The digit of code device cable is lower, and the number that corresponding encoder cable is write is smaller;The switching value pulse time of cable
Several numerical value is smaller, then the digit of corresponding encoder cable is higher, and the number that corresponding encoder cable is write is got over
It is small;
Then all cables 6 of the photoelectric encoder 5 after replacing all transfer to terminal block 2, then compile the photoelectricity after number
Size little-endian is sequentially ingressed into terminal block 2 to each cable of code device by number;
Then the numerical value clicked again on view display 4 empties button 7, and the numerical value shown on view display 4 is purged,
Then 5 input shaft of rotary encoder and again tap on again and start counting button 8 on view display 4, when start counting by
Button 8 can start counting signal to the transmission of processing module 32 switched in batching counter 3 again when being clicked, and switch batching counter 3
In processing module 32 receive and start counting signal after, can start to the received encoders input of 31 institute of digital quantity receiving module
Each terminal of the terminal block 2 switching value pulse number that the corresponding encoder cable 6 accessed generates by number is counted when axis rotates
Number, and the switching value pulse number that the encoder cable 6 of the corresponding access of each terminal of terminal block 2 generates is passed through into communication module 33
It is sent in view display 4, the corresponding encoder accessed is electric by number for the view display meeting each terminal of real-time display terminal block 2
The switching value pulse number that cable 6 generates;
After 5 input shaft of encoder is rotated again not less than a circle, stop operating 5 input shaft of encoder and to again tap on picture aobvious
Show that the stopping on device 4 counts button by 9, can be sent to switch batching counter 3 when stopping count button 9 and being clicked and stop counting letter
Number, switch batching counter 3 stops the encoder for corresponding to access by number to each terminal of terminal block 2 after receiving stopping count signal
Cable 6 generate switching value pulse number counted, can be shown on view display 4 at this time from switch batching counter 3 from
It starts again in this period for counting down to and stopping counting again, the corresponding encoder accessed is electric by number for each terminal of terminal block 2
The switching value pulse number that cable 6 generates;
If the switching value pulse number that each encoder cable 6 shown on view display 4 at this time generates arranges from big to small
When, then illustrate that the digit of each cable of encoder at this time is correct, if each encoder cable shown on view display 4 at this time
The 6 switching value pulse numbers generated are not then to illustrate that the digit of each cable of encoder at this time is incorrect when arranging from big to small,
Aforesaid operations only need to be repeated, until the digit of each cable of encoder is correct.
The beneficial effects of the present invention are: each cable high-low-position in photoelectric encoder can be determined quickly, it is only necessary to which 5 minutes just
The school line operation an of photoelectric encoder can be completed, time saving, laborsaving and accuracy rate is high, and primary school line completion rate makes light up to 100%
Photoelectric coder can correctly and rapidly access mine slot feeding control system, it is ensured that the normal feeding of blast furnace, reaching, which reduces equipment, mistakes
Purpose, it is smooth to guarantee that blast fumance is stablized.
Claims (6)
1. a kind of photoelectric sensor Quick cable checking device, it is characterised in that: including backboard, terminal block is provided on backboard, is opened
Batching counter and view display are closed, the quantity of terminal is greater than or equal to the quantity of cable in encoder in the terminal block,
Ensure that all cables of encoder can access terminal block simultaneously, the output end of each terminal while and switching value in the terminal block
The input end signal of counter connects, and the input end signal of the output end and view display that switch batching counter connects;It is described
The switch batching counter switching value arteries and veins that the encoder cable of each corresponding access of terminal generates when can rotate to encoder input shaft
Jig frequency number count and Real-time Feedback is to view display;It is corresponding that the view display can display real-time each terminal of terminal block
The switching value pulse number that the encoder cable of access generates.
2. a kind of photoelectric sensor Quick cable checking device according to claim 1, it is characterised in that: switch batching counter
Structure includes: digital quantity receiving module, processing module, communication module and power module, the output of the digital quantity receiving module
End is connect with the input end signal of processing module, and the output end of processing module and the input end signal of communication module connect, communication
The output end of module is connect with view display signal, the power module simultaneously with digital quantity receiving module, processing module and
Communication module is connected, thus for digital quantity receiving module, processing module and communication module power supply.
3. a kind of photoelectric sensor Quick cable checking device according to claim 1 or 2, it is characterised in that: shown in picture
It is provided with numerical value on device and empties button, when clicking numerical value and emptying button, each terminal pair of terminal block for showing on view display
The switching value pulse number that the encoder cable that should be accessed generates can be emptied.
4. a kind of photoelectric sensor Quick cable checking device according to claim 1 or 2, it is characterised in that: shown in picture
It is provided on device and starts counting button, started counting button and connect with switching value counter signals, when starting counting button by point
Signal can be started counting to switch batching counter transmission when hitting, switch batching counter receives start counting signal after start opposite end
The switching value pulse number that the encoder cable that son arranges the corresponding access of each terminal generates is counted.
5. a kind of photoelectric sensor Quick cable checking device according to claim 1 or 2, it is characterised in that: shown in picture
It is provided with stopping count button on device, stops count button and is connect with switching value counter signals, when stopping count button is by point
It can be sent to switch batching counter when hitting and stop count signal, switch batching counter stops opposite end after receiving stopping count signal
The switching value pulse number that the encoder cable that son arranges the corresponding access of each terminal generates is counted.
6. a kind of photoelectric sensor Quick cable checking device according to claim 3, it is characterised in that: on view display
It is provided with stopping count button, stops count button and is connect with switching value counter signals, when stopping count button being clicked
Meeting is sent to switch batching counter stops count signal, and switch batching counter stops after receiving stopping count signal to terminal block
The switching value pulse number that the encoder cable of the corresponding access of each terminal generates is counted.
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CN201811451564.1A CN109375039B (en) | 2018-11-30 | 2018-11-30 | Quick line calibrating device for photoelectric sensor |
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CN201811451564.1A CN109375039B (en) | 2018-11-30 | 2018-11-30 | Quick line calibrating device for photoelectric sensor |
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CN109375039B CN109375039B (en) | 2024-04-16 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109375038A (en) * | 2018-11-30 | 2019-02-22 | 江苏永钢集团有限公司 | A kind of photoelectric sensor Quick cable checking device and school line method |
CN112014771A (en) * | 2020-09-04 | 2020-12-01 | 国网冀北电力有限公司检修分公司 | Cable calibration device and cable calibration control method and system thereof |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN87102192A (en) * | 1987-03-18 | 1987-09-30 | 倪墉堂 | Digital cable alignment apparatus |
JP2005207864A (en) * | 2004-01-22 | 2005-08-04 | Denso Corp | Encoder inspecting apparatus |
CN2938035Y (en) * | 2006-07-28 | 2007-08-22 | 上海梅山钢铁股份有限公司 | Pulse detection device of incremental photoelectric coder |
CN202841036U (en) * | 2012-09-14 | 2013-03-27 | 沈阳市蓝光自动化技术有限公司 | Line sequence identification device of sine/cosine coder |
CN104090506A (en) * | 2014-06-11 | 2014-10-08 | 中国人民解放军63680部队 | Digital input module for adjusting show value of electronic instrument |
CN207763733U (en) * | 2018-01-26 | 2018-08-24 | 扬州海通电子科技有限公司 | Permutation device detection device |
CN109375038A (en) * | 2018-11-30 | 2019-02-22 | 江苏永钢集团有限公司 | A kind of photoelectric sensor Quick cable checking device and school line method |
CN209560006U (en) * | 2018-11-30 | 2019-10-29 | 江苏联峰实业有限公司 | A kind of photoelectric sensor Quick cable checking device |
-
2018
- 2018-11-30 CN CN201811451564.1A patent/CN109375039B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN87102192A (en) * | 1987-03-18 | 1987-09-30 | 倪墉堂 | Digital cable alignment apparatus |
JP2005207864A (en) * | 2004-01-22 | 2005-08-04 | Denso Corp | Encoder inspecting apparatus |
CN2938035Y (en) * | 2006-07-28 | 2007-08-22 | 上海梅山钢铁股份有限公司 | Pulse detection device of incremental photoelectric coder |
CN202841036U (en) * | 2012-09-14 | 2013-03-27 | 沈阳市蓝光自动化技术有限公司 | Line sequence identification device of sine/cosine coder |
CN104090506A (en) * | 2014-06-11 | 2014-10-08 | 中国人民解放军63680部队 | Digital input module for adjusting show value of electronic instrument |
CN207763733U (en) * | 2018-01-26 | 2018-08-24 | 扬州海通电子科技有限公司 | Permutation device detection device |
CN109375038A (en) * | 2018-11-30 | 2019-02-22 | 江苏永钢集团有限公司 | A kind of photoelectric sensor Quick cable checking device and school line method |
CN209560006U (en) * | 2018-11-30 | 2019-10-29 | 江苏联峰实业有限公司 | A kind of photoelectric sensor Quick cable checking device |
Non-Patent Citations (1)
Title |
---|
王建国,王银洲: "主轴编码器的工作原理及常见故障分析", 职业, no. 05, 15 February 2013 (2013-02-15) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109375038A (en) * | 2018-11-30 | 2019-02-22 | 江苏永钢集团有限公司 | A kind of photoelectric sensor Quick cable checking device and school line method |
CN109375038B (en) * | 2018-11-30 | 2020-09-11 | 江苏永钢集团有限公司 | Rapid line calibration device and method for photoelectric sensor |
CN112014771A (en) * | 2020-09-04 | 2020-12-01 | 国网冀北电力有限公司检修分公司 | Cable calibration device and cable calibration control method and system thereof |
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