CN114061635A - Position measuring method for substituting absolute value encoder - Google Patents
Position measuring method for substituting absolute value encoder Download PDFInfo
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- CN114061635A CN114061635A CN202111390953.XA CN202111390953A CN114061635A CN 114061635 A CN114061635 A CN 114061635A CN 202111390953 A CN202111390953 A CN 202111390953A CN 114061635 A CN114061635 A CN 114061635A
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- encoder
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims abstract description 5
- 230000008054 signal transmission Effects 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 10
- 238000000691 measurement method Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
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- 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
- G01D5/26—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention belongs to the technical field of steel production, and particularly relates to a position measuring method for replacing an absolute value encoder, which comprises the following steps of 1, selecting a position measuring component; 2. mounting a position measurement component; 3. debugging the middle-range distance sensor; 4. signal transmission; 5. reading and converting signals; 6. position compensation; 7. and (3) replacing: the actual position value MD658 of the device under test is directly replaced by the actual position value calculated by the original encoder. The distance meter does not need to reciprocate along with equipment, and the real-time position is fed back through laser, so that the faults of short circuit and open circuit of the cable are avoided, and the cost of the cable is saved; when the laser range finder is damaged, only two fixing screws need to be removed, and the laser range finder can be replaced by pulling out the plug, so that the laser range finder is convenient and quick to use, and the failure time is saved; the installation position is a fixed position, so that the daily inspection and maintenance are convenient; a position compensation program is added in the program, and the position difference can be directly adjusted in the program when the laser range finder is replaced at the later stage.
Description
Technical Field
The invention belongs to the technical field of steel production, and particularly relates to a position measuring method for replacing an absolute value encoder.
Background
At present, a lot of devices which move linearly are arranged in a factory, and position detection is needed at any time to determine the operation state of the devices. Such as: the loading and discharging machine, the capillary tube traversing carriage, the label spraying trolley and the like in the seamless steel tube factory are characterized in that the position real-time detection and feedback of the devices are completed by absolute value encoders, the devices are reciprocating linear motion devices, and the signal transmission cables of the encoders also follow the reciprocating motion, so that the long-term reciprocating motion can cause the phenomena of abrasion, skin breaking, short circuit, open circuit or short circuit and the like of the cables of the encoders, and the device faults are caused by the loss of position signals. The encoder is generally moved along with the equipment, the routine inspection and maintenance are difficult, and particularly, the encoder is arranged at the position of a rear shaft of the motor, and the state of the encoder cannot be seen without stopping. The coupling of the encoder to the device often loosens with the vibrations of the device resulting in inaccurate position feedback. Once the encoder is damaged and replaced, the time and the labor are wasted, and particularly, the encoder at the position of the rear shaft of the motor is mounted, the encoder needs to be replaced by firstly disassembling the fan, so that the fault downtime is greatly prolonged.
Disclosure of Invention
In order to solve the problems, the invention provides a position measuring method replacing an absolute value encoder, wherein the position measured by the encoder is replaced by the position measured by a laser range finder; the laser range finder is arranged at a fixed position and can not move along with the equipment; the laser reflector is arranged on the mobile equipment and can move freely along with the equipment, and the position feedback cannot be influenced by vibration; and a position compensation program is added in the program, so that later maintenance is facilitated.
The technical scheme adopted by the invention is as follows: a position measurement method in place of an absolute value encoder, the position measurement method comprising the steps of:
step one, selecting a type of a position measurement component: the measuring component is selected as a mock middle distance sensor with the model number of dl35-b 15552;
step two, installation of position measurement components and parts: installing the mid-range distance sensor at a fixed position behind a measured object, installing a reflector on the measured object, enabling the reflector and the mid-range distance sensor to be coaxial, and removing a position encoder;
step three, debugging the intermediate range distance sensor: setting the minimum distance of the intermediate range distance sensor as a default distance, setting the minimum distance as 200mm, setting the maximum distance as a distance larger than the moving distance of a measured object, setting the maximum detection distance as 10000mm, and setting the feedback signal 4-20mA of the intermediate range distance sensor to be 200mm-10000mm correspondingly;
step four, signal transmission: the feedback signal of the middle range distance sensor is connected to a Siemens PLC analog quantity input module;
step five, signal reading and conversion: IN the program, an FC105 block of a Siemens PLC is used for converting a 4-20mA current signal into an actual position value, IN is connected with an address IW518 of an analog input module connected with a middle distance sensor signal, HI _ LIM value is set to be 10000mm of maximum detection distance set by middle distance sensor, LO _ LIM value is set to be 200mm of minimum detection distance, and OUT is connected with a global variable double-word MD 662;
step six, position compensation: position compensation adopts SUB _ R floating point number subtraction, IN1 is connected with MD662, the value input by IN2 is the difference between the zero point of the device and the zero point of the intermediate distance sensor, OUT is output to a global variable doubleword MD658, and the numerical value IN MD658 is the actual position of the device under test;
step seven, replacement: the actual position value MD658 of the device under test is directly replaced by the actual position value calculated by the original encoder.
Further, the position measuring method is used for measuring the position of the loading machine, the discharging machine or the capillary tube transverse moving vehicle for real-time detection.
The invention has the beneficial effects that: the position measuring method replacing an absolute value encoder is provided, the distance measuring instrument does not need to move back and forth along with equipment, and the real-time position is fed back through laser, so that the faults of short circuit and open circuit of a cable are avoided, and the cost of the cable is saved; when the laser range finder is damaged, only two fixing screws need to be removed, and the laser range finder can be replaced by pulling out the plug, so that the laser range finder is convenient and quick to use, and the failure time is saved; the installation position is a fixed position, so that the daily inspection and maintenance are convenient; a position compensation program is added in the program, and the position difference can be directly adjusted in the program when the laser range finder is replaced at the later stage.
Detailed Description
A position measurement method in place of an absolute value encoder, the position measurement method comprising the steps of:
step one, selecting a type of a position measurement component: the measuring component is selected as a mock middle distance sensor with the model number of dl35-b 15552;
step two, installation of position measurement components and parts: installing the mid-range distance sensor at a fixed position behind a measured object, installing a reflector on the measured object, enabling the reflector and the mid-range distance sensor to be coaxial, and removing a position encoder;
step three, debugging the intermediate range distance sensor: setting the minimum distance of the intermediate range distance sensor as a default distance, setting the minimum distance as 200mm, setting the maximum distance as a distance larger than the moving distance of a measured object, setting the maximum detection distance as 10000mm, and setting the feedback signal 4-20mA of the intermediate range distance sensor to be 200mm-10000mm correspondingly;
step four, signal transmission: the feedback signal of the middle range distance sensor is connected to a Siemens PLC analog quantity input module;
step five, signal reading and conversion: IN the program, an FC105 block of a Siemens PLC is used for converting a 4-20mA current signal into an actual position value, IN is connected with an address IW518 of an analog input module connected with a middle distance sensor signal, HI _ LIM value is set to be 10000mm of maximum detection distance set by middle distance sensor, LO _ LIM value is set to be 200mm of minimum detection distance, and OUT is connected with a global variable double-word MD 662;
step six, position compensation: position compensation adopts SUB _ R floating point number subtraction, IN1 is connected with MD662, the value input by IN2 is the difference between the zero point of the device and the zero point of the intermediate distance sensor, OUT is output to a global variable doubleword MD658, and the numerical value IN MD658 is the actual position of the device under test;
step seven, replacement: the actual position value MD658 of the device under test is directly replaced by the actual position value calculated by the original encoder.
The position of the mobile equipment is measured through the intermediate range distance sensor, the current signal is transmitted to the PLC, and the current signal is read and converted into an actual position value of the mobile equipment through the PLC.
Example two
The position measuring method replacing an absolute value encoder is used for measuring the position of a charging machine, a discharging machine or a capillary tube transverse moving vehicle in real time.
Claims (2)
1. A position measurement method that replaces an absolute value encoder, characterized by: the position measurement method includes the steps of:
step one, selecting a type of a position measurement component: the measuring component is selected as a mock middle distance sensor with the model number of dl35-b 15552;
step two, installation of position measurement components and parts: installing the mid-range distance sensor at a fixed position behind a measured object, installing a reflector on the measured object, enabling the reflector and the mid-range distance sensor to be coaxial, and removing a position encoder;
step three, debugging the intermediate range distance sensor: setting the minimum distance of the intermediate range distance sensor as a default distance, setting the minimum distance as 200mm, setting the maximum distance as a distance larger than the moving distance of a measured object, setting the maximum detection distance as 10000mm, and setting the feedback signal 4-20mA of the intermediate range distance sensor to be 200mm-10000mm correspondingly;
step four, signal transmission: the feedback signal of the middle range distance sensor is connected to a Siemens PLC analog quantity input module;
step five, signal reading and conversion: IN the program, an FC105 block of a Siemens PLC is used for converting a 4-20mA current signal into an actual position value, IN is connected with an address IW518 of an analog input module connected with a middle distance sensor signal, HI _ LIM value is set to be 10000mm of maximum detection distance set by middle distance sensor, LO _ LIM value is set to be 200mm of minimum detection distance, and OUT is connected with a global variable double-word MD 662;
step six, position compensation: position compensation adopts SUB _ R floating point number subtraction, IN1 is connected with MD662, the value input by IN2 is the difference between the zero point of the device and the zero point of the intermediate distance sensor, OUT is output to a global variable doubleword MD658, and the numerical value IN MD658 is the actual position of the device under test;
step seven, replacement: the actual position value MD658 of the device under test is directly replaced by the actual position value calculated by the original encoder.
2. A position measuring method in place of an absolute value encoder according to claim 1, characterized in that: the position measuring method is used for measuring the position of the charging machine, the discharging machine or the capillary tube transverse moving vehicle for real-time detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111390953.XA CN114061635A (en) | 2021-11-23 | 2021-11-23 | Position measuring method for substituting absolute value encoder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111390953.XA CN114061635A (en) | 2021-11-23 | 2021-11-23 | Position measuring method for substituting absolute value encoder |
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| CN114061635A true CN114061635A (en) | 2022-02-18 |
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| CN202111390953.XA Pending CN114061635A (en) | 2021-11-23 | 2021-11-23 | Position measuring method for substituting absolute value encoder |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200225522Y1 (en) * | 2001-01-12 | 2001-06-01 | 주식회사이너텍 | Three-dimensional scanner |
| CN106475611A (en) * | 2016-11-22 | 2017-03-08 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of automatic compensation processing method of annular web class foundry goods |
| CN106625020A (en) * | 2017-02-27 | 2017-05-10 | 张道勇 | Incremental magnetic induction bus type encoder for high-speed high-precision machine tool main shaft and electric main shaft |
| CN111115458A (en) * | 2020-04-01 | 2020-05-08 | 湖南三一塔式起重机械有限公司 | Load position calculation device and crane |
| CN111504216A (en) * | 2020-04-24 | 2020-08-07 | 中国水利水电夹江水工机械有限公司 | Track deformation detection method |
| CN113091609A (en) * | 2021-03-31 | 2021-07-09 | 中冶南方工程技术有限公司 | Position detection method and device for converter buggy ladle |
-
2021
- 2021-11-23 CN CN202111390953.XA patent/CN114061635A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200225522Y1 (en) * | 2001-01-12 | 2001-06-01 | 주식회사이너텍 | Three-dimensional scanner |
| CN106475611A (en) * | 2016-11-22 | 2017-03-08 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of automatic compensation processing method of annular web class foundry goods |
| CN106625020A (en) * | 2017-02-27 | 2017-05-10 | 张道勇 | Incremental magnetic induction bus type encoder for high-speed high-precision machine tool main shaft and electric main shaft |
| CN111115458A (en) * | 2020-04-01 | 2020-05-08 | 湖南三一塔式起重机械有限公司 | Load position calculation device and crane |
| CN111504216A (en) * | 2020-04-24 | 2020-08-07 | 中国水利水电夹江水工机械有限公司 | Track deformation detection method |
| CN113091609A (en) * | 2021-03-31 | 2021-07-09 | 中冶南方工程技术有限公司 | Position detection method and device for converter buggy ladle |
Non-Patent Citations (1)
| Title |
|---|
| 成进军;王仁波;刘恒杰;: "外置式激光距离传感器在扩管比例缸控制中的应用", 宝钢技术, no. 02, pages 296 - 298 * |
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