CN114577119A - Steel plate length measuring device and method - Google Patents
Steel plate length measuring device and method Download PDFInfo
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- CN114577119A CN114577119A CN202210298749.3A CN202210298749A CN114577119A CN 114577119 A CN114577119 A CN 114577119A CN 202210298749 A CN202210298749 A CN 202210298749A CN 114577119 A CN114577119 A CN 114577119A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
Abstract
The application discloses steel sheet length measurement device and method, the device includes: the device comprises a speedometer, a photoelectric sensor, a processing module, a communication interface and a display, wherein the speedometer and the photoelectric sensor are arranged in parallel at the middle position above the roller way. The method comprises the following steps: after the roller way is started, judging whether the photoelectric sensor jumps from a light-passing state to a light-shading state; if yes, detecting the head of the steel plate; recording the current moment and starting a speedometer to detect the running speed of the steel plate; transmitting the running speed of the steel plate to a processing module in real time; judging whether the photoelectric sensor jumps from a shading state to a light-passing state; if yes, detecting the tail of the steel plate; recording the current moment and stopping the work of the tachometer; according to the obtained steel plate running speed and running time, utilizing a formula
Calculating the length of the steel plate; the steel plate length is displayed. Through the method and the device, the length measurement precision of the steel plate can be effectively improved.
Description
Technical Field
The application relates to the technical field of steel rolling automation instruments, in particular to a steel plate length measuring device and method.
Background
In the field of steel rolling, the length of a steel plate is an important index of the quality of the steel plate, and particularly for steel products with sensitive sizes such as wide and thick plates, the influence of the length of the steel plate on the quality of the steel is particularly obvious. Therefore, how to measure the length of the steel plate is an important technical problem.
The current method for measuring the length of the steel plate is generally as follows: and measuring by adopting a roller way belt encoder, and converting the length of the steel plate according to the number of pulses of the encoder and the circumference of the roller way. Specifically, when the steel plate passes through the measuring roller way, the roller way drives the encoder to rotate, and the length of the steel plate is calculated according to the number of rotating circles of the encoder and the circumference of the roller way.
However, in the method of measuring steel sheet length at present, because there is the difference in speed between the roll table to can cause the steel sheet to skid, moreover, the roll table can not normally be dragged when having in the steel sheet operation process to beat, in addition, the wearing and tearing of roll table and the change that the encoder number of turns corresponds length can be caused to throw off scheduling problem between encoder and the roll table with warping, these circumstances can all lead to the measuring error increase finally, and measuring result's accuracy is lower.
Disclosure of Invention
The application provides a steel plate length measuring device and method, and aims to solve the problem that in the prior art, the measuring precision of a steel plate length measuring method is low.
In order to solve the technical problem, the embodiment of the application discloses the following technical scheme:
a steel sheet length measuring device, the measuring device comprising: the device comprises a speedometer, a photoelectric sensor, a processing module, a communication interface and a display, wherein the speedometer and the photoelectric sensor are arranged in the middle position above a roller way in parallel, the input end of the processing module is respectively in communication connection with the speedometer and the photoelectric sensor, and the output end of the processing module is connected to the display through the communication interface;
the tachometer is used for measuring the running speed of the steel plate to be measured;
the photoelectric sensor is used for collecting the arrival time and the departure time of the steel plate to be detected;
the processing module is used for utilizing a formula according to the running speed, the arrival time and the departure time of the steel plate to be detected
Calculating the length of the steel plate to be detected, storing the length of the steel plate to be detected, and transmitting the length of the steel plate to a display through a communication interface, wherein L is the length of the steel plate to be detected, V (t) is the running speed of the steel plate to be detected, t is the running time of the steel plate to be detected, and epsilon is the induction error of the photoelectric sensor.
Optionally, the processing module includes:
the calculation unit is used for calculating the length of the steel plate to be detected according to the running speed, the arrival time and the departure time of the steel plate to be detected, and generating steel plate length information;
and the storage unit is used for storing the steel plate length information.
Optionally, the processing module further comprises:
and the judging unit is used for judging whether the running states of the speedometer, the photoelectric sensor and the processing module are normal or not according to the set running data, judging whether the communication states of the speedometer, the photoelectric sensor and the processing module are normal or not, and giving an alarm when the running state or the communication state is abnormal.
A steel plate length measuring method applied to a steel plate length measuring apparatus according to any one of claims 1 to 3, the measuring method comprising:
after the roller way is started to normally operate, judging whether the photoelectric sensor jumps from a light-transmitting state to a light-shielding state;
if so, judging that the head of the steel plate to be detected is detected;
recording the current moment as a shading moment T0, and starting a speedometer to detect the running speed of the steel plate;
transmitting the running speed of the steel plate to a processing module in real time;
judging whether the photoelectric sensor jumps from a shading state to a light-passing state or not in the running process of the steel plate to be detected;
if so, judging that the tail of the steel plate to be detected is detected;
recording the current moment as a light-on moment T1, and controlling the tachometer to stop working;
according to the obtained steel plate running speed and running time, utilizing a formula
Calculating the length of the steel plate, wherein the running time is the difference between the light-passing time and the light-shading time, L is the length of the steel plate to be detected, V (t) is the running speed of the steel plate to be detected, t is the running time of the steel plate to be detected, and epsilon is the sensing error of the photoelectric sensor;
and displaying the length of the steel plate.
Optionally, according to the obtained steel plate running speed and running time, using a formula
After calculating the length of the steel plate, the method further comprises the following steps:
and storing the length of the steel plate.
Optionally, the method further comprises:
at the shading moment, the head of the steel plate to be detected simultaneously triggers a photoelectric sensor and a speedometer;
and at the light-transmitting moment, the head of the steel plate to be detected simultaneously triggers the photoelectric sensor and the speedometer.
Optionally, after displaying the length of the steel plate, the method further includes:
and clearing the tachometer.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the application provides a steel sheet length measurement device, the device mainly includes: the device comprises a tachometer, a photoelectric sensor, a processing module, a communication interface and a display. The speedometer and the photoelectric sensor are arranged in parallel above the roller way and are arranged in parallel and close to each other as much as possible, so that the speedometer and the photoelectric sensor can be triggered simultaneously when a steel plate arrives, and the accuracy of a measuring result is improved. The input end of the processing module is respectively in communication connection with the speedometer and the photoelectric sensor, so that the running speed of the steel plate to be measured by the speedometer and the jumping signal of the photoelectric sensor pair can be timely transmitted to the processing module, and the length of the steel plate to be measured can be conveniently calculated in real time. The output end of the processing module is connected to the display through the communication interface, so that the working personnel can timely and visually know the length information and the running state of the steel plate to be detected, and the improvement of user experience is facilitated. The steel plate length measuring device in the embodiment measures the length of the steel plate in real time, and can avoid error accumulation caused by speed difference and jumping in the operation of a roller way. And the speedometer and the photoelectric sensor are arranged in parallel at the middle position above the roller way and can be started simultaneously, so that the speed difference between the roller ways is avoided, and the error is greatly reduced.
The application also provides a steel plate length measuring method, and the method detects whether the head and the tail of the steel plate to be measured come in the operation process by judging the jump signal of the photoelectric sensor at the shading time and the light-passing time, so that the whole steel plate to be measured can be detected, and the accuracy of the steel plate length measurement is ensured. In addition, in the embodiment, the running speed of the steel plate is transmitted to the processing module in real time, and the length of the steel plate is calculated by adopting an integral formula, so that the external influence in the running process can be avoided in the measurement of the length of the steel plate, and the accuracy of the measurement result is ensured. In addition, in this embodiment in time show steel sheet length, be favorable to the user to master steel sheet length the very first time to with the linking of other processes, improve work efficiency. In the embodiment, the tachometer is started to detect the running speed of the steel plate when the head of the steel plate to be detected is detected, and the tachometer is controlled to stop working when the tail of the steel plate to be detected is detected.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a steel plate length measuring device according to an embodiment of the present disclosure;
FIG. 2 is a side view of a steel plate length measuring device according to an embodiment of the present disclosure;
FIG. 3 is a front view of a steel plate length measuring device provided in an embodiment of the present application;
fig. 4 is a schematic flow chart of a method for measuring a length of a steel plate according to an embodiment of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
For a better understanding of the present application, embodiments of the present application are explained in detail below with reference to the accompanying drawings.
Example one
Referring to fig. 1, fig. 1 is a schematic structural diagram of a steel plate length measuring device according to an embodiment of the present application. As can be seen from fig. 1, the steel plate length measuring apparatus in the present embodiment mainly includes: the device comprises a tachometer, a photoelectric sensor, a processing module, a communication interface and a display. The speedometer is used for measuring the running speed of the steel plate to be measured, the speedometer in the embodiment is used for detecting the running speed of the steel plate to be measured in real time instead of measuring the transport speed of the roller way, and the structure can avoid the measurement of the roller way speed in the traditional device and is favorable for improving the accuracy of the measurement result.
The photoelectric sensor is used for collecting arrival time and departure time of a steel plate to be detected, different operation times of the steel plate to be detected are confirmed through a photoelectric sensor hopping signal in the embodiment, in the operation process of the steel plate to be detected, the head firstly arrives under the photoelectric sensor, the current time is the arrival time, the arrival time photoelectric sensor hops from a light-passing state to a light-shielding state, when the tail of the steel plate to be detected runs under the photoelectric sensor, the current time is the departure time, and the departure time photoelectric sensor hops from the light-shielding state to the light-passing state.
The processing module is used for utilizing a formula according to the running speed, the arrival time and the departure time of the steel plate to be measured
And calculating the length of the steel plate to be detected, storing the length of the steel plate to be detected, and transmitting the length of the steel plate to the display through the communication interface. Wherein L is the length of the steel plate to be measured, V (t) is the running speed of the steel plate to be measured, t is the running time of the steel plate to be measured, and epsilon is the induction error of the photoelectric sensor. The steel plate length calculation formula of the embodiment is an integral formula, and the integral formula is obtained according to the speed of each moment acquired by the tachometer in the steel plate operation processThe degree is calculated, so that the accuracy of the calculation result of the length of the steel plate to be measured is improved, and the induction error of the photoelectric sensor is considered in the calculation formula of the length of the steel plate, so that the measurement precision is improved.
The tachometer and the photoelectric sensor are installed in parallel above the roller way at an intermediate position, and specifically, a side view of the steel plate length measuring device shown in fig. 2 and a front view of the steel plate length measuring device shown in fig. 3 can be referred to. The figure shows a photoelectric sensor, i.e. a photosensor. As can be known from the figures 2 and 3, the speedometer and the photoelectric sensor are arranged at the same horizontal position in the transverse middle above the roller way in parallel and are close to each other as much as possible, so that the speedometer and the photoelectric sensor are simultaneously triggered when the steel plate arrives, and the accuracy of the measurement result is improved.
The input end of the processing module in the embodiment is respectively in communication connection with the tachometer and the photoelectric sensor, so that the running speed of the steel plate to be tested, which is collected by the tachometer, and the shading signal or the light signal can be obtained at the first time, and the shading signal or the light signal can run synchronously, thereby being beneficial to improving the accuracy of the test result. The output end of the processing module is connected to the display through the communication interface, so that the test result can be visually displayed in time.
Further, the processing module in this embodiment includes: a calculation unit and a storage unit. The calculating unit is used for calculating the length of the steel plate to be detected according to the running speed, the arrival time and the departure time of the steel plate to be detected, and generating steel plate length information; and the storage unit is used for storing the length information of the steel plate. After the length information of the steel plate is stored, other processes in the production process can conveniently take the information, and the production operation efficiency is improved.
The processing module also comprises a judging unit which is used for judging whether the running states of the speedometer, the photoelectric sensor and the processing module are normal or not according to the set running data and judging whether the communication states of the speedometer, the photoelectric sensor and the processing module are normal or not, and when the running state or the communication state is abnormal, an alarm is given. The setting of this judgement unit can in time acquire the operating condition of core component among the steel sheet length-measuring device to and the communication state between the part, thereby maintain measuring device operating condition and data transmission's stability.
Example two
Referring to fig. 4 on the basis of the embodiments shown in fig. 1 to fig. 3, fig. 4 is a schematic flow chart of a method for measuring the length of a steel plate according to an embodiment of the present application. As can be seen from fig. 4, the method for measuring the length of the steel plate in the present embodiment mainly includes the following steps:
s1: and after the roller way is started to normally run, judging whether the photoelectric sensor jumps from a light-passing state to a light-shading state.
The embodiment determines whether a steel plate arrives according to the jump signal of the photoelectric sensor and determines whether to start measurement. In the normal production process, when the steel plate to be measured travels to the position of the speedometer and the photoelectric sensor through the roller way, the head firstly reaches the position.
If the photo sensor jumps from the light-on state to the light-off state, step S2 is executed: and judging that the head of the steel plate to be detected is detected.
Otherwise, it is determined that the steel plate has not been detected, and the process proceeds to step S1.
After the head of the steel plate to be detected is detected, the step S3 is executed: and recording the current moment as a shading moment T0, and starting a tachometer to detect the running speed of the steel plate.
This embodiment is at the shading moment, and the head of the steel sheet that awaits measuring triggers photoelectric sensor and speedometer simultaneously, senses the steel sheet head and begins to test the speed promptly, can ensure both uniformity, is favorable to improving measuring result's accuracy.
S4: and transmitting the running speed of the steel plate to the processing module in real time.
The embodiment provides a basis for the follow-up accurate measurement of the length of the steel plate by transmitting the running speed of the steel plate in real time, and is favorable for improving the accuracy of the measurement of the length of the steel plate.
After the running speed of the steel plate is transmitted to the processing module in real time, the steel plate is continuously conveyed and moved by the roller way, and the step S5 is executed: and in the running process of the steel plate to be detected, judging whether the photoelectric sensor jumps from a shading state to a light-passing state.
If the photo sensor transits from the light-shielding state to the light-transmitting state, step S6 is executed: and judging that the tail of the steel plate to be detected is detected.
S7: and recording the current time as the light-on time T1, and controlling the tachometer to stop working.
With the principle unanimous of shading moment T0, this embodiment is leading to the light moment, and the head of the steel sheet that awaits measuring triggers photoelectric sensor and speedometer simultaneously, is favorable to improving steel sheet length measurement's accuracy.
S8: according to the obtained steel plate running speed and running time, utilizing a formula
And calculating the length of the steel plate, wherein the running time is the difference between the light-passing time and the light-shielding time.
Wherein L is the length of the steel plate to be measured, V (t) is the running speed of the steel plate to be measured, t is the running time of the steel plate to be measured, and epsilon is the induction error of the photoelectric sensor.
S9: the steel plate length is displayed.
Further, in this embodiment, after step S8, the method further includes: the steel plate length is stored. The method of writing in the log can be adopted to store the length information of the steel plate in time, and convenience is provided for subsequent information retrieval.
After the length of the steel plate is displayed, the present embodiment further includes step S10: and (5) clearing the tachometer. By the mode, the information of the current tachometer can be ensured to only aim at the current steel plate to be measured, the length of the current steel plate to be measured is measured, and the tachometer information is cleared, so that the memory space of the tachometer is saved, and the working efficiency is improved.
For the parts not described in detail in this embodiment, reference may be made to the embodiments shown in fig. 1 to fig. 3, and the two parts may be referred to each other, which is not described herein again.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A steel plate length measuring device, characterized by comprising: the device comprises a speedometer, a photoelectric sensor, a processing module, a communication interface and a display, wherein the speedometer and the photoelectric sensor are arranged in the middle position above a roller way in parallel, the input end of the processing module is respectively in communication connection with the speedometer and the photoelectric sensor, and the output end of the processing module is connected to the display through the communication interface;
the tachometer is used for measuring the running speed of the steel plate to be measured;
the photoelectric sensor is used for acquiring the arrival time and the departure time of the steel plate to be detected;
the processing module is used for utilizing a formula according to the running speed, the arrival time and the departure time of the steel plate to be detected
Calculating the length of the steel plate to be detected, storing the length of the steel plate to be detected, and transmitting the length of the steel plate to a display through a communication interface, wherein L is the length of the steel plate to be detected, V (t) is the running speed of the steel plate to be detected, t is the running time of the steel plate to be detected, and epsilon is the induction error of the photoelectric sensor.
2. A steel sheet length measuring apparatus according to claim 1, wherein the processing module comprises:
the calculation unit is used for calculating the length of the steel plate to be detected according to the running speed, the arrival time and the departure time of the steel plate to be detected, and generating steel plate length information;
and the storage unit is used for storing the steel plate length information.
3. A steel sheet length measuring apparatus according to claim 2, wherein the processing module further comprises:
and the judging unit is used for judging whether the running states of the speedometer, the photoelectric sensor and the processing module are normal or not according to the set running data, judging whether the communication states of the speedometer, the photoelectric sensor and the processing module are normal or not, and giving an alarm when the running state or the communication state is abnormal.
4. A steel plate length measuring method applied to a steel plate length measuring apparatus according to any one of claims 1 to 3, the measuring method comprising:
after the roller way is started to normally run, judging whether the photoelectric sensor jumps from a light-passing state to a light-shading state;
if so, judging that the head of the steel plate to be detected is detected;
recording the current moment as a shading moment T0, and starting a speedometer to detect the running speed of the steel plate;
transmitting the running speed of the steel plate to a processing module in real time;
judging whether the photoelectric sensor jumps from a shading state to a light-passing state or not in the running process of the steel plate to be detected;
if so, judging that the tail of the steel plate to be detected is detected;
recording the current moment as a light-on moment T1, and controlling the tachometer to stop working;
according to the obtained steel plate running speed and running time, utilizing a formula
Calculating the length of the steel plate, wherein the running time is the difference between the light-passing time and the light-shading time, L is the length of the steel plate to be detected, V (t) is the running speed of the steel plate to be detected, t is the running time of the steel plate to be detected, and epsilon is the sensing error of the photoelectric sensor;
and displaying the length of the steel plate.
5. Steel plate length measuring method according to claim 4Characterized in that a formula is used according to the obtained running speed and running time of the steel plate
After calculating the length of the steel plate, the method further comprises the following steps:
and storing the length of the steel plate.
6. A steel sheet length measuring method according to claim 4, further comprising:
at the shading moment, the head of the steel plate to be detected simultaneously triggers a photoelectric sensor and a speedometer;
and at the light-transmitting moment, the head of the steel plate to be detected simultaneously triggers the photoelectric sensor and the speedometer.
7. The method of claim 4, wherein after displaying the length of the steel plate, the method further comprises:
and clearing the tachometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210298749.3A CN114577119A (en) | 2022-03-23 | 2022-03-23 | Steel plate length measuring device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210298749.3A CN114577119A (en) | 2022-03-23 | 2022-03-23 | Steel plate length measuring device and method |
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| KR20070035140A (en) * | 2005-09-27 | 2007-03-30 | 주식회사 포스코 | Apparatus and method for measuring length of strip |
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