A rolling force measuring system

Abstract

The application relates to the field of metal rolling. A rolling force measuring system comprises a front-end control module and a rear-end processing module; the front-end control module is used for filtering first sensing data to obtain second sensing data and performing a preprocessing operation on the second sensing data to obtain third sensing data; the rear-end processing module is connected with the front-end control module through an optical fiber and is used for acquiring the third sensing data and determining rolling force according to the third sensing data. The application is different from the prior art in signal transmission, that is, the optical fiber with electromagnetic interference resistance is used for signal transmission. Since the optical fiber has the basic characteristic of electromagnetic interference resistance, when the optical fiber is used as a connecting structure to connect the front-end control module and the rear-end processing module, signal transmission can be immune to electromagnetic interference, and the rolling force measuring precision in a harsh rolling environment can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of metal rolling, in particular to a rolling force measuring system. BACKGROUND

[0002] In the hot rolling process, the thickness and width deformation of the billet and the strip are mainly realized by the longitudinal or transverse rolling force. The pressure of the metal acting on the roll during the rolling process is called rolling force, which is one of the basic load parameters of the rolling mill. Accurate measurement of the rolling force plays an important role in reasonable arrangement of rolling process, reasonable use and control of rolling mill function, and improvement of product quality and yield. Therefore, rolling force measurement is a crucial factor in hot rolling automation production.

[0003] However, the automatic rolling production is generally in the working conditions of strong electromagnetic field, high pollution, high temperature and vibration, etc. It not only leads to the reduction of the service life of the rolling force measuring device, but also leads to the electromagnetic interference of the rolling force measuring signal during transmission. In particular, in the prior art, a plurality of wires are often used for signal transmission between the front end and the external host. During the signal transmission process, the rolling force measuring signal is distorted due to the poor anti-electromagnetic interference ability of the wire, and the accuracy of the rolling force measurement cannot be guaranteed in the harsh rolling environment. SUMMARY

[0004] The purpose of the present application is to provide a rolling force measuring system to solve the problem of low rolling force measurement accuracy in the prior art.

[0005] To achieve the above purpose, the present application provides the following solutions:

[0006] A rolling force measuring system, comprising: a front-end control module and a rear-end processing module;

[0007] The front-end control module comprises a rolling force sensor; the rolling force sensor is connected with the steel body and is used for acquiring first sensing data; the first sensing data is the resistance value of a resistance strain gage;

[0008] The front-end control module is used for filtering the first sensing data to obtain second sensing data, and performing a preprocessing operation on the second sensing data to obtain third sensing data;

[0009] The rear-end processing module is connected with the front-end control module through an optical fiber, is used for acquiring the third sensing data, and determines the rolling force according to the third sensing data.

[0010] Optionally, the rolling force sensor specifically comprises an elastic element and the resistance strain gage.

[0011] The elastic element is a whole piece of alloy steel; the number of the resistance strain gauges is multiple; the multiple resistance strain gauges are pasted on the elastic element and in contact with the steel body; the multiple resistance strain gauges form a Wheatstone bridge; the Wheatstone bridge measures the first sensing data according to the deformation of the multiple resistance strain gauges.

[0012] Optionally, the front-end control module further comprises a fourth-order filter.

[0013] The fourth-order filter is connected with the rolling force sensor and is used for filtering the first sensing data to obtain the second sensing data.

[0014] Optionally, the front-end control module further comprises a field junction box.

[0015] The field junction box is connected with the fourth-order filter and the back-end processing module respectively, is used for pre-processing the second sensing data to obtain the third sensing data, and transmits the third sensing data to the back-end processing module through the optical fiber; the pre-processing operation includes amplification operation, noise reduction operation and analog-digital conversion operation.

[0016] Optionally, the back-end processing module specifically comprises a signal processing unit.

[0017] The signal processing unit is connected with the field junction box, is used for receiving the third sensing data, and determines the rolling force according to the third sensing data.

[0018] Optionally, it further comprises a computer module.

[0019] The computer module specifically comprises a rolling line first-level computer, a rolling line second-level computer and a management computer.

[0020] The rolling line first-level computer is connected with the signal processing unit, is used for obtaining the rolling force.

[0021] The rolling line second-level computer is connected with the management computer, is used for uploading a steel number to the management computer, and the steel number corresponds to the rolling force one by one.

[0022] The management computer is connected with the signal processing unit, is used for storing the rolling force, the steel number and the corresponding relationship between the steel number and the rolling force, and generating a rolling force curve according to the rolling force.

[0023] Optionally, the shell of the rolling force sensor adopts a completely welded sealing structure, and inert gas is filled into the sealing structure.

[0024] Optionally, the RS422 data transmission protocol is used between the management computer and the signal processing unit.

[0025] According to the specific embodiments of the present application, the following technical effects are disclosed: the present application provides a rolling force measurement system, which comprises a front-end control module and a back-end processing module; the front-end control module transmits signals to the back-end processing module, and the signal transmission process is a bridge between signal acquisition and signal analysis; the present application differs from the use of multiple wires for signal transmission in the prior art in that optical fibers with anti-electromagnetic interference are used for signal transmission; since optical fibers have the basic characteristic of anti-electromagnetic interference, when they are used as a connection structure to connect the front-end control module and the back-end processing module, signal transmission can be immune to electromagnetic interference, and the measurement accuracy of the rolling force in a harsh rolling environment can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows: obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 A flowchart of a rolling force measurement system is provided.

[0028] SYMBOL DESCRIPTION

[0029] Rolling force sensor-1, fourth-order filter-2, field terminal box-3, optical fiber-4, signal processing unit-5, rolling line first-level computer-6, rolling line second-level computer-7, management computer-8. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application: obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] The purpose of the present application is to provide a rolling force measurement system, thereby improving the measurement accuracy of the rolling force in a harsh rolling environment.

[0032] In order to make the above-mentioned purposes, characteristics and advantages of the present application more apparent and easy to understand, the present application will be further described in detail in combination with the drawings and specific embodiments.

[0033] Figure 1A flow chart of a rolling force measurement system provided by the present application is shown in Figure 1 The present application provides a rolling force measurement system, comprising: a front-end control module and a back-end processing module; the front-end control module comprises a rolling force sensor 1; the rolling force sensor 1 is connected with a steel body, for obtaining first sensing data; the first sensing data is the resistance value of a resistance strain gauge; the front-end control module is used for filtering the first sensing data to obtain second sensing data, and performing a preprocessing operation on the second sensing data to obtain third sensing data; the back-end processing module is connected with the front-end control module through an optical fiber 4, for obtaining the third sensing data, and determining the rolling force according to the third sensing data.

[0034] In actual application, the optical fiber 4 has the basic characteristics of anti-electromagnetic interference and complete insulation; the anti-electromagnetic interference characteristic can effectively reduce electromagnetic interference in the signal transmission process; the complete insulation can ensure that there is no leakage and short-circuit grounding; the optical fiber 4 is easy to maintain.

[0035] In actual application, the optical fiber 4 can also preferably use a cable with strong anti-interference ability.

[0036] In actual application, a single-phase 220V power supply can connect up to 8 signal processing units; one signal processing unit can receive data of two rolling force sensors.

[0037] In actual application, the rolling force sensor 1 specifically comprises: an elastic element and the resistance strain gauge; the elastic element is a whole piece of alloy steel; the number of the resistance strain gauges is multiple; multiple resistance strain gauges are pasted on the elastic element and in contact with the steel body; multiple resistance strain gauges form a Wheatstone bridge; the Wheatstone bridge measures the first sensing data according to the deformation amount of multiple resistance strain gauges; the elastic element is forged from a whole piece of high-strength high-quality alloy steel, has strong overload capacity, good precision, stable performance and long service life.

[0038] In actual application, multiple resistance strain gauges are connected to form a Wheatstone bridge; when the steel body is subjected to a force perpendicular to the surface of the steel body, the steel body will uniformly conduct the force downward, and the steel body will also produce an elastic deformation along the force direction, so that the resistance strain gauges attached to the steel body are deformed, and the resistance values of the resistance strain gauges change; all deformed resistance strain gauges are connected to the Wheatstone bridge.

[0039] In practical application, the front-end control module further comprises: a fourth-order filter 2; the fourth-order filter 2 is connected with the rolling force sensor 1, and is used for filtering the first sensing data to obtain the second sensing data; the fourth-order filter 2 performs shielding processing in the process of signal generation, receiving and transmission to the field junction box 3, so as to ensure the safety of the transmission process.

[0040] In practical application, the front-end control module further comprises: a field junction box 3; the field junction box 3 is connected with the fourth-order filter 2 and the back-end processing module respectively, and is used for pre-processing the second sensing data to obtain the third sensing data, and transmitting the third sensing data to the back-end processing module through the optical fiber 4; the pre-processing operation includes amplification operation, noise reduction operation and analog-to-digital conversion operation.

[0041] In practical application, the signal description of the first sensing data output by the rolling force sensor 1 is a weak analog signal of 20 mV, and the signal description of the digital signal formed after the analog-to-digital conversion operation is 5000 mV.

[0042] In practical application, the back-end processing module specifically comprises: a signal processing unit 5; the signal processing unit 5 is connected with the field junction box 3, and is used for receiving the third sensing data and determining the rolling force according to the third sensing data.

[0043] In practical application, the present application further comprises: a computer module; the computer module specifically comprises: a rolling line first-level computer 6, a rolling line second-level computer 7 and a management computer 8; the rolling line first-level computer 6 is connected with the signal processing unit 5, and is used for acquiring the rolling force; the signal processing unit 5 transmits the rolling force to the rolling line first-level computer 6 in the form of analog quantity and switching quantity; the rolling line second-level computer 7 is connected with the management computer 8, and is used for uploading a steel number to the management computer 8, the steel number corresponding to the rolling force one by one; the management computer 8 is connected with the signal processing unit 5, and is used for storing the rolling force, the steel number and the corresponding relationship between the steel number and the rolling force, and generating a rolling force curve according to the rolling force.

[0044] In practical application, the management computer 8 has the functions of system calibration, parameter setting, display of measurement data, data recording and historical data inquiry; the management computer 8 can realize calibration and diagnosis of the rolling force sensor 1.

[0045] In practical application, the shell of the rolling force sensor 1 adopts a completely welded sealing structure, and inert gas is filled into the sealing structure.

[0046] In practical applications, the RS422 data transmission protocol is used between the management computer 8 and the signal processing unit 5.

[0047] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0048] The principles and implementation manners of the present application are described by using specific examples in the specification. The above description of the embodiments is only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, the specific implementation manners and application ranges can be changed according to the idea of the present application. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A rolling force measuring system characterized by, The application relates to a rolling force measuring system. The front-end control module and the back-end processing module are included. The front-end control module includes a rolling force sensor, which is connected with a steel body and used for acquiring first sensing data. The first sensing data is the resistance value of a resistance strain gauge. The front-end control module is used for filtering the first sensing data to obtain second sensing data and performing a preprocessing operation on the second sensing data to obtain third sensing data; the preprocessing operation includes amplification operation, noise reduction operation and analog-to-digital conversion operation. The signal description of the first sensing data is an analog signal of 20 mV, and the signal description of the digital signal formed after the analog-to-digital conversion operation is 5000 mV. The back-end processing module is connected with the front-end control module through an optical fiber and is used for acquiring the third sensing data and determining rolling force according to the third sensing data. The rolling force measuring system further includes a computer module; the computer module specifically includes a rolling line first-level computer, a rolling line second-level computer and a management computer. The management computer has the functions of system calibration, parameter setting, measurement data display, data recording and historical data inquiry; and the management computer is used for realizing calibration and diagnosis of the rolling force sensor.

2. A rolling force measurement system according to claim 1, characterised in that, The rolling force sensor specifically includes an elastic element and the resistance strain gauge. The elastic element is a whole piece of alloy steel; the number of the resistance strain gauges is multiple; the multiple resistance strain gauges are pasted on the elastic element and are in contact with the steel body; the multiple resistance strain gauges form a Wheatstone bridge; and the Wheatstone bridge measures the first sensing data according to the deformation amount of the multiple resistance strain gauges.

3. A rolling force measurement system according to claim 2, characterised in that, The front-end control module further includes a fourth-order filter. The fourth-order filter is connected with the rolling force sensor and is used for filtering the first sensing data to obtain the second sensing data.

4. A rolling force measurement system according to claim 3, characterised in that, The front-end control module further includes a field junction box. The field junction box is connected with the fourth-order filter and the back-end processing module respectively and is used for performing a preprocessing operation on the second sensing data to obtain the third sensing data and transmitting the third sensing data to the back-end processing module through the optical fiber.

5. A rolling force measurement system according to claim 4, wherein The back-end processing module specifically includes a signal processing unit. The signal processing unit is connected with the field junction box and is used for receiving the third sensing data and determining rolling force according to the third sensing data.

6. A rolling force measurement system according to claim 5, wherein The rolling line first-level computer is connected with the signal processing unit and is used for acquiring the rolling force. The rolling line second-level computer is connected with the management computer and is used for uploading a steel number to the management computer; the steel number corresponds to the rolling force one by one. The management computer is connected with the signal processing unit and is further used for storing the rolling force, the steel number and the corresponding relationship between the steel number and the rolling force and generating a rolling force curve according to the rolling force.

7. A rolling force measurement system according to claim 6, characterised in that, The shell of the rolling force sensor adopts a completely welded sealing structure, and inert gas is filled into the sealing structure.

8. A rolling force measurement system according to claim 7, characterised in that, The management computer uses an RS422 data transmission protocol with the signal processing unit. The management computer uses an RS422 data transmission protocol with the signal processing unit.

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