CN110017888A - A kind of yarn winding weighing sensor null offset calibration method based on PLC - Google Patents
A kind of yarn winding weighing sensor null offset calibration method based on PLC Download PDFInfo
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- CN110017888A CN110017888A CN201910411618.XA CN201910411618A CN110017888A CN 110017888 A CN110017888 A CN 110017888A CN 201910411618 A CN201910411618 A CN 201910411618A CN 110017888 A CN110017888 A CN 110017888A
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- sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
Abstract
The present invention relates to carbon fibre stretching technical fields more particularly to a kind of yarn based on PLC to wind weighing sensor null offset calibration method, and this method comprises the following steps: obtaining the primary data X for being mounted with to open up the sensor of fine bar；Obtain the real time data Y for being mounted with to open up the sensor of fine bar；Calculate zero point the numerical value Z, Z=Y-X of sensor；Judge whether Z is greater than drift critical value L, determines whether to produce null offset；If it is determined that producing null offset, then the zero point of sensor is calibrated, covers X with Y value, then carry out subsequent processing；If it is determined that not generating null offset, then next process is carried out.By carrying out transducer calibration at the end PLC, directly judge whether to need to carry out zero point correction by the module of PLC, then at the end PLC, operation calibrates the zero point of sensor, compared with prior art, without the company's of tearing open hardware repeatedly, improves work efficiency.
Description
Technical field
The present invention relates to carbon fibre stretching technical fields more particularly to a kind of yarn based on PLC to wind weighing sensor
Null offset calibration method.
Background technique
Resistance strain can be communicated with digital weighing sensor acquisition module, will by internal signal pick-up Dan Yuan
The micro voltage analog signal of sensor is converted to the digital signal of scale, and the microprocessor built in the module supports calibration to calculate
Real-time weight can be read directly in method after calibrated, pass to PLC by 485 interfaces, PLC again passes to real-time weight value
Display unit.However in use for some time, sensor zero point can generate drift, especially in carbon fibre stretching technique, by
In contacting on the workpiece being connected with sensor with carbon fiber, subtle variation can occur for its own weight, adjust not in time, can be right
The fine tension of exhibition affects greatly, therefore sensor zero point needs to carry out zero point correction in use for some time, when calibration,
Need the patchcord of 485 turns of USB to be connected to the end PC, by digital weighing sensor acquisition module carry calibration software into
Rower is fixed, and this scaling method is needed to hardware torn open company repeatedly, relatively complicated and it is necessary to using being mounted with related software
PC can just be operated.
Presence in view of the above problems, the designer are based on being engaged in such product engineering application practical experience abundant for many years
And professional knowledge, and cooperate the utilization of scientific principle, it is subject to research and innovation, actively to found a kind of yarn winding title based on PLC
Weight sensor zero drift calibration method, makes it with more practicability.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of yarn winding weighing sensor zero point drift based on PLC
Calibration method is moved, realizes the zero point correction of not taking out stitches of yarn winding weighing sensor.
In order to achieve the above object, the technical scheme adopted by the invention is that: it is a kind of based on PLC yarn winding weighing pass
Sensor null offset calibration method, this method comprises the following steps:
Obtain the primary data X for being mounted with to open up the sensor of fine bar；
Obtain the real time data Y for being mounted with to open up the sensor of fine bar；
Calculate zero point the numerical value Z, Z=Y-X of sensor；
Judge whether Z is equal to drift critical value L, determines whether to produce null offset；
If it is determined that producing null offset, then the zero point of sensor is calibrated, covers X with Y value, then carry out next work
Sequence；
If it is determined that not generating null offset, then next process is carried out.
Further, the primary data X is the actual grammage for opening up fine bar, the preparation method of the actual grammage are as follows:
Obtain the initial data X1 for being mounted with to open up the sensor of fine bar；
M grams of counterweight is hung on opening up fine bar；
Record the real time data X2 on sensor at this time；
Calculate the grammes per square metre COEFFICIENT K of sensor, K=(X2-X1)/M；
Obtain actual grammage X=K*X1 of sensor.
Further, the real time data Y is the actual grammage of sensor, the preparation method of the actual grammage are as follows:
Obtain the real time data Y1 for being mounted with to open up the sensor of fine bar；
Calculate actual grammage Y=K*Y1 of sensor.
It is further, described to obtain the primary data X for being mounted with to open up the sensor of fine bar, comprising:
The first data X of sensor first after the fine bar of storage installation exhibition；
When needing to obtain, the first data X of storage is read；
When the zero point to sensor is calibrated, X is covered with Y, after covering, the data of the new X of reading are the value after covering.
Further, the drift critical value L is 0g.
It is further, described to judge whether Z is equal to drift critical value L, comprising:
Show zero point numerical value Z；
When Z is not equal to 0, it is determined that produce null offset；
When Z is equal to 0, it is determined that do not generate null offset.
Further, the zero point to sensor is calibrated, comprising:
Issue zero point correction instruction；
The primary data X of sensor is updated to newest real time data Y；
Sensor zero point numerical value Z at this time is calculated, and judges whether to complete calibration；
If Z is 0, completion is calibrated；
If Z is not 0, zero point correction instruction is re-emitted, until Z is 0 stopping.
Further, the data of the drift critical value L can change setting.
Further, whether the absolute value for judging Z is greater than drift critical value L, comprising:
Input the data of critical value L；
Judge whether the absolute value of Z is greater than the data L of input；
If the absolute value of Z is less than or equal to L, without zero point correction；
If the absolute value of Z is greater than L, the primary data X of sensor is updated to newest real time data Y automatically, to carry out zero
Point calibration.
The invention has the benefit that, by carrying out transducer calibration at the end PLC, directly passing through the mould of PLC in the present invention
Block judges whether to need to carry out zero point correction, and then at the end PLC, operation calibrates the zero point of sensor, with prior art phase
Than improving work efficiency without the company's of tearing open hardware repeatedly.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is that the yarn based on PLC of the embodiment of the present invention one winds the stream of weighing sensor null offset calibration method
Cheng Tu；
Fig. 2 is sensor of the present invention and the fine rod structure schematic diagram of exhibition；
Fig. 3 is that the yarn based on PLC of embodiment one in the present invention winds the electrical of weighing sensor null offset calibration method
Connection schematic diagram；
Fig. 4 is the process of the yarn winding weighing sensor null offset calibration method in the present invention in embodiment two based on PLC
Figure；
Fig. 5 is that the yarn based on PLC of embodiment two in the present invention winds the electrical of weighing sensor null offset calibration method
Connection schematic diagram.
Specific embodiment
Since resistance strain needs repeatedly the company's of tearing open data line to connect progress with the end PC when null offset occurs
Zero point correction, relatively complicated, therefore, the embodiment of the present application proposes a kind of yarn winding weighing sensor zero point based on PLC
Drift about calibration method, is implemented without the company's of tearing open data line and directly carries out the null offset school that sensor is realized in operation at the end PLC
Quasi- work.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Yarn based on PLC as shown in Figure 1 winds weighing sensor null offset calibration method, and this method includes as follows
Step:
Step S101 obtains the primary data X for being mounted with to open up the sensor of fine bar；
In above-mentioned steps, as shown in Fig. 2, the sensor 1 in the application is fixed on bracket, and is connect with fine bar 2 is opened up, open up
There are gaps between fine bar 2 and bracket, in order to more accurately receive the power that fine bar 2 is opened up in the wrapping of yarn 3.In the present embodiment,
The primary data X of acquisition refers to the pressure value that sensor is induced when yarn 3 is not pressed in and opens up on fine bar 2.
Step S102 obtains the real time data Y for being mounted with to open up the sensor of fine bar；
In above-mentioned steps, as shown in figure 3, equipped with data storage cell 21, data processing unit in PLC20 in the application
22, touch control unit 23 and weighing sensor 24 are shown；Wherein data storage cell 21 store that weighed sensor 24 measures just
Beginning data X, then data processing unit 22 continues to obtain the real time data Y of weighing sensor.
Step S103 calculates zero point the numerical value Z, Z=Y-X of sensor；
In above-mentioned steps, detect whether that null offset has occurred indeed through the mode of calculating, the value of Z is equal at data
The real time data Y that reason unit 22 obtains subtracts the primary data X in data storage cell 21, then shows data and touches in display
It controls on unit 23.
Step S104, judges whether Z is equal to 0, determines whether to produce null offset；
Step S105 then carries out next process if it is determined that not generating null offset.
Step 106, if it is determined that producing null offset, then calibration steps S107 is carried out to the zero point of sensor, then held
Row next step S108, i.e. progress subsequent processing.
In above-mentioned steps, the judgement to null offset is the number that the Z shown on touch control unit 23 is shown in by observing
Value defaults that there is no null offsets when Yarn winding device does not have yarn to surround on the fine bar 2 of exhibition, however once
It was found that the Z value shown on display touch control unit is not 0, then it represents that sensor 1 has occurred that null offset, at this time with regard to needs pair
The zero point of sensor 1 re-starts calibration.
Specifically, being additionally provided with zero point correction push button on display touch control unit 23, touch-control list is shown when observing
When Z value in member is not equal to 0, operator presses zero point correction button, i.e. the instruction of sending zero point correction；Data processing list at this time
Primary data X in data storage cell 21 is updated to the real time data Y obtained by member 22, then updates display touch control unit 23
The Z value of upper display calibrates completion if Z is 0；If Z is not 0, zero point correction instruction is re-emitted, until Z is 0 stopping.Calibration
Afterwards, the real time data Y covering that the primary data X of original data storage cell is acquired, when next time carries out data processing again, reads
The value of new X.
In the present embodiment, transducer calibration is carried out using PLC, directly judges whether to need to carry out by the module of PLC
Zero point correction, then at the end PLC, operation calibrates the zero point of sensor, compared with prior art, hard without the company of tearing open repeatedly
Part improves work efficiency.
In addition, whether more intuitive display zero point has occurred by showing that touch control unit directly displays zero drift value Z
Drift, by the zero point correction button on touching display screen, a key operation is more convenient.
Embodiment two
In example 1, the Z value for judging whether to generate null offset is shown in display touch control unit 23, but needs artificial
It goes manual operation that the calibration of 1 null offset of sensor just may be implemented, is used in second embodiment of the invention automatic
The mode of judgement is realized that zero point correction works automatically.
Specifically, as shown in figure 4, second embodiment of the invention winds weighing sensor zero point based on the yarn of PLC
Drift about calibration method, and this method comprises the following steps:
Step S201, setting drift critical value L；
In above-mentioned steps, the data of drift critical value L can change setting, as shown in figure 5, in this example it is shown that touch-control
Input unit 25 is additionally provided on unit 23, input unit 25 is used for input drift critical value L, and the size of critical value L is by client
It is decided in its sole discretion according to needs of production, the influence when generating smaller null offset to yarn tension value is little, can ignore,
Therefore critical value L can be arranged it is big a bit.
Step S202 obtains the primary data X of sensor after being mounted with to open up fine bar；
Here, the primary data X of sensor does not imply that the data that sensor 1 is shown after transmitter, and refers to and open up fine bar 2
The preparation method of actual grammage, actual grammage is as follows:
Obtain the initial data X1 for being mounted with to open up the sensor of fine bar；
M grams of counterweight is hung on opening up fine bar；
Record the real time data X2 on sensor at this time；
Calculate the grammes per square metre COEFFICIENT K of sensor, K=(X2-X1)/M；
Obtain actual grammage X=K*X1 of sensor.
In the actual grammage of above-mentioned exhibition fibre bar 2 obtains, surveyed using the weight that the own wt M and sensor of counterweight are shown
The grammes per square metre COEFFICIENT K for obtaining sensor 1 calculates the grammes per square metre X for the fine bar that exhibits using grammes per square metre COEFFICIENT K, and the initial grammes per square metre that will open up fine bar 2 saves
In data storage cell 20 and it is shown on display touch control unit 23.
Step S203 obtains the real time data Y of sensor after being mounted with to open up fine bar；
In above-mentioned steps, real time data Y is the actual grammage of sensor, the preparation method of the actual grammage are as follows:
Obtain the real time data Y1 for being mounted with to open up the sensor of fine bar；
Calculate actual grammage Y=K*Y1 of sensor.
It should be pointed out that above-mentioned actual grammage test method is to be completed under the conditions of PLC using other modules auxiliary
, only after measuring grammes per square metre COEFFICIENT K, just final grammes per square metre value can be shown on display touch control unit 23, in above-mentioned steps
In, after calculating the actual grammes per square metre Y of sensor, the actual grammage of sensor is shown on display touch control unit 23.
Step S204 calculates zero point the value Z, Z=Y-X of sensor；
In the above-described embodiments, the value of Z is also shown on display touch control unit 23, does not have yarn wrapping on Yarn winding device
When, what Z was shown is the null offset grammes per square metre of sensor, and when being surrounded with yarn on Yarn winding device, Z shows to be yarn
The pressure value to sensor.
Step S205, judges whether the value of Z is greater than drift critical value L, determines whether to produce null offset.
In above-mentioned steps, the operation of numerical value and the data processing unit more passed through in PLC are completed.Step S206,
If not generating null offset, subsequent processing is carried out, i.e., if the absolute value of Z is less than or equal to L, without generating zero point drift
It moves, then carries out next process without zero point correction.
Step S207 calibrates the zero point of sensor if generating null offset；
Step S208, update primary data X are Y；I.e. the absolute value of Z is greater than L, then automatically updates the primary data X of sensor
For newest real time data Y, to carry out zero point correction.
Step S209 carries out next process.
It should be pointed out that the null offset calibration function setting of sensor 1 is first in yarn winding booting in the present embodiment
Period beginning, unless manual operation, will not do calibration again, to prevent in yarn winding process after the completion of null offset calibration
Erroneous judgement and cause show touch control unit 23 can not correctly show yarn tension value.
In the present embodiment, the null offset calibration accuracy of sensor is adjusted by being manually entered drift critical value L, and
The data processing unit of PLC carries out judgement and calibration automatically, prevents machine initial operating stage nobody from forgetting zero point when observing
Drift calibration, and show that touch-control module directly displays out gram of null offset when no yarn is wrapped in and opens up on fine bar
Weight, yarn is directly displayed when there is yarn to be wrapped in and open up on fine bar to the pressure for opening up fine bar, observation when convenient for machine operation with
Control.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
It is merely illustrated the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
It is defined by the appending claims and its equivalent thereof.
Claims (9)
1. a kind of yarn based on PLC winds weighing sensor null offset calibration method, which is characterized in that this method includes such as
Lower step:
Obtain the primary data X for being mounted with to open up the sensor of fine bar；
Obtain the real time data Y for being mounted with to open up the sensor of fine bar；
Calculate zero point the numerical value Z, Z=Y-X of sensor；
Judge whether Z is equal to drift critical value L, determines whether to produce null offset；
If it is determined that producing null offset, then the zero point of sensor is calibrated, covers X with Y value, then carry out next work
Sequence；
If it is determined that not generating null offset, then next process is carried out.
2. the yarn according to claim 1 based on PLC winds weighing sensor null offset calibration method, feature exists
In the primary data X is the actual grammage for opening up fine bar, the preparation method of the actual grammage are as follows:
Obtain the initial data X1 for being mounted with to open up the sensor of fine bar；
M grams of counterweight is hung on opening up fine bar；
Record the real time data X2 on sensor at this time；
Calculate the grammes per square metre COEFFICIENT K of sensor, K=(X2-X1)/M；
Obtain actual grammage X=K*X1 of sensor.
3. the yarn according to claim 2 based on PLC winds weighing sensor null offset calibration method, feature exists
In the real time data Y is the actual grammage of sensor, the preparation method of the actual grammage are as follows:
Obtain the real time data Y1 for being mounted with to open up the sensor of fine bar；
Calculate actual grammage Y=K*Y1 of sensor.
4. the yarn according to claim 1 based on PLC winds weighing sensor null offset calibration method, feature exists
In described to obtain the primary data X for being mounted with to open up the sensor of fine bar, comprising:
The first data X of sensor first after the fine bar of storage installation exhibition；
When needing to obtain, the first data X of storage is read；
When the zero point to sensor is calibrated, X is covered with Y, after covering, the data of the new X of reading are the value after covering.
5. the yarn according to claim 1 based on PLC winds weighing sensor null offset calibration method, feature exists
In the drift critical value L is 0g.
6. the yarn according to claim 5 based on PLC winds weighing sensor null offset calibration method, feature exists
In described to judge whether Z is equal to drift critical value L, comprising:
Show zero point numerical value Z；
When Z is not equal to 0, it is determined that produce null offset；
When Z is equal to 0, it is determined that do not generate null offset.
7. the yarn according to claim 6 based on PLC winds weighing sensor null offset calibration method, feature exists
In the zero point to sensor is calibrated, comprising:
Issue zero point correction instruction；
The primary data X of sensor is updated to newest real time data Y；
Sensor zero point numerical value Z at this time is calculated, and judges whether to complete calibration；
If Z is 0, completion is calibrated；
If Z is not 0, zero point correction instruction is re-emitted, until Z is 0 stopping.
8. the yarn according to claim 3 based on PLC winds weighing sensor null offset calibration method, feature exists
In the data of the drift critical value L can change setting.
9. the yarn according to claim 8 based on PLC winds weighing sensor null offset calibration method, feature exists
In whether the absolute value for judging Z is greater than drift critical value L, comprising:
Input the data of critical value L；
Judge whether Z is greater than the data L of input；
If the absolute value of Z is less than or equal to L, without zero point correction；
If the absolute value of Z is greater than L, the primary data X of sensor is updated to newest real time data Y automatically, to carry out zero
Point calibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910411618.XA CN110017888A (en) | 2019-05-17 | 2019-05-17 | A kind of yarn winding weighing sensor null offset calibration method based on PLC |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910411618.XA CN110017888A (en) | 2019-05-17 | 2019-05-17 | A kind of yarn winding weighing sensor null offset calibration method based on PLC |
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Cited By (5)
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| CN110567624A (en) * | 2019-09-07 | 2019-12-13 | 苏州创易技研股份有限公司 | Method for automatically keeping tension measurement data stable |
| CN111982396A (en) * | 2020-08-10 | 2020-11-24 | 博众精工科技股份有限公司 | Pressure detection method and device, electronic equipment and storage medium |
| CN114383357A (en) * | 2020-10-21 | 2022-04-22 | 青岛海尔电冰箱有限公司 | Refrigerator testing method and refrigerator |
| CN114772356A (en) * | 2022-06-16 | 2022-07-22 | 新创碳谷控股有限公司 | Tension calibration calculation method and device |
| CN114910153A (en) * | 2022-06-14 | 2022-08-16 | 上海佑久健康科技有限公司 | Method, device, server, system and computer-readable storage medium for online detection of weight deviation |
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| CN114910153A (en) * | 2022-06-14 | 2022-08-16 | 上海佑久健康科技有限公司 | Method, device, server, system and computer-readable storage medium for online detection of weight deviation |
| CN114772356A (en) * | 2022-06-16 | 2022-07-22 | 新创碳谷控股有限公司 | Tension calibration calculation method and device |
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