CN116393522B

CN116393522B - Thickness processing system of open-type four-column twenty-roller mill

Info

Publication number: CN116393522B
Application number: CN202310303890.2A
Authority: CN
Inventors: 杨基明; 线薇
Original assignee: Xi'an Amctech Co ltd
Current assignee: Xi'an Amctech Co ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2024-03-22
Anticipated expiration: 2043-03-27
Also published as: CN116393522A

Abstract

The invention provides an open type four-column twenty-roller thickness processing system, which comprises: the system comprises a conditioning module, an acquisition module, a data acquisition control module, a storage module, a main control module and a transmission module; the conditioning module, the acquisition module, the data acquisition control module, the main control module and the transmission module are sequentially in communication connection; the storage module is connected with the data acquisition control module; the conditioning module is used for conditioning the acquired input signals; the acquisition module is used for carrying out AD conversion on the conditioned input signals; the data acquisition control module is used for storing/reading the operation data of the FPGA; the storage module is used for realizing FIFO (first in first out) inside the FPGA and providing storage expansion outwards; the main control module is used for issuing a working mode control signal of the thickness processing system; and the transmission module is used for carrying out network communication with the upper computer. The invention avoids a plurality of defects of the prior application, and leads the application of the thickness processing system to be generalized and simplified.

Description

Thickness processing system of open-type four-column twenty-roller mill

Technical Field

The invention belongs to the technical field of data acquisition, and particularly relates to a thickness processing system of an open-type four-column twenty-roller mill.

Background

With the development and progress of society, the processing requirements on various industries in the market are more and more, and the precision requirements on product processing are higher and more. In the production of nonferrous metal industrial plate and strip, the data acquisition also shows the importance of the nonferrous metal industrial plate and strip; only the accurate collection and accurate processing of data can ensure the high quality and high requirements of the product.

The sampling mode of the data is that the data of the same point is repeatedly collected at intervals of a certain time (called sampling period). The data collected is mostly instantaneous value, but also a characteristic value in a certain period of time. Accurate data measurement is the basis of data acquisition, and the data measurement method has contact type and non-contact type, and detection elements are various. In any method and element, the condition that the state of the measured object and the measuring environment are not influenced is provided, so that the correctness of the data is ensured. The diversity of data acquisition also results in a variety of changes in the design of data acquisition boards. The data collection in the industrial field is various, such as temperature, water level, wind speed, pressure, displacement and the like, and can be analog quantity or digital quantity. There are many communication protocols used in industry, such as PROFIBUS, modbus, CAN, HART, etherCAT, ethernetIP, modbus/TCP, PROFINET, OPC UA, etc.; the types of collected data are also various, such as video signals, audio signals, current, voltage signals, etc.; the design of the data acquisition board card is also hundreds of flowers and thousands of kinds according to the reasons of different input and output interfaces, different communication frequencies and the like in the industrial field.

The iron and steel smelting industry in China has been developed for 70 years since the country is built, in the 70-year struggle, china has made a rapid development, the only hundreds of thousands of tons in annual output in the early stage of development is broken through, and the world is first for many years, and the first steel producing country in the world is formed. The open type four-column twenty-high rolling mill is a typical application in a plurality of rolling mill types; the method is characterized in that: the rolling mill has large opening degree, is convenient for threading, and is particularly suitable for rolling wedge-shaped strips, thick strips or extremely thin strips; the roller diameter of the roller has wide application range and long service life; the pressing response time is short, and the control precision is high; the plate type adjusting means are more, the size precision is high, the use cost is low, and the like. In the process of strip rolling, the thickness detection precision plays a vital role in the quality of finished products, and the thickness detection part of the existing open-type four-stand twenty-high rolling mill mainly has two application modes:

the PLC module is applied; the most widely applied in the market at present are Siemens data acquisition modules, bei Jialai signal acquisition modules and the like. There are many limitations to the use of such modules, such as: A. the module has high cost and long purchasing period, and if multiple paths of acquisition are needed, the corresponding acquisition module is needed to be continuously added, so that the purchasing cost is directly doubled; B. the communication protocols are various, such as application of RS232, RS422, RS485, PROFIBUS, MODBUS, CAN and the like, the universality is not strong during application, and the later interface conversion development cost is required to be increased; C. when the PLC module is applied, a special software platform matched with the PLC module is needed to support, so that the learning and developing time and cost are increased;

the application of the acquisition board card; the acquisition board card is applied to PCL-813 acquisition board cards and the like produced by the Minghua technology; the following disadvantages exist in the application of the lead card: A. the installation is inconvenient, and the housing of the industrial personal computer needs to be opened during the assembly; B. the input of the board card is only provided with a voltage signal, and no current signal is input for detection; C. the board card acquisition precision is not high, and is 12-bit signal acquisition; D. the board application requires the special driver support of board development companies; E. the expandability is not high; if new business needs to develop new business modules by each software system, the data interfaces between the new business modules and the large data platform need to be correspondingly modified and changed, and even all the previous data interface codes need to be overturned, so that the workload is high and the time consumption is long.

Disclosure of Invention

In order to solve the technical problems, the invention provides the thickness treatment system of the open-type four-column twenty-roller mill, which avoids a plurality of defects of the prior application and leads the application of the treatment module to be generalized and simplified.

The invention provides an open type four-column twenty-roller thickness processing system, which comprises: the system comprises a conditioning module, an acquisition module, a data acquisition control module, a storage module, a main control module and a transmission module;

the conditioning module, the acquisition module, the data acquisition control module, the main control module and the transmission module are sequentially in communication connection; the storage module is connected with the data acquisition control module;

the conditioning module is used for conditioning the acquired input signals;

the acquisition module is used for carrying out AD conversion on the conditioned input signals;

the data acquisition control module is used for storing/reading the operation data of the FPGA;

the storage module is used for realizing FIFO (first in first out) inside the FPGA and providing storage expansion outwards;

the main control module is used for issuing a working mode control signal of the thickness processing system;

and the transmission module is used for carrying out network communication with the upper computer.

Optionally, the conditioning module performs signal conditioning on the input signal, including:

the method comprises the steps of converting the signal type of the input signal, selecting the range of the input signal and selecting the coupling mode function of the input signal.

Optionally, the acquisition module includes: the A/D acquisition unit and the registering unit;

the A/D acquisition unit is respectively connected with the conditioning module and the data acquisition control module, and the registering unit is respectively connected with the conditioning module and the main control module;

the A/D acquisition unit is used for carrying out AD conversion on the conditioned input signals;

the register unit is used for carrying out serial port input latching on the working mode control signal issued by the main control module and outputting control through a parallel port so as to complete connection between the sending and control of the working mode control signal.

Optionally, the data acquisition control module stores/reads operation data of the FPGA, including: storing an operation program of the FPGA, calibrating parameters of the thickness processing system of the open-type four-column twenty-roller mill, inputting signals after AD conversion, and reading communication data between the data acquisition control module and the main control module.

Optionally, the storage module is configured to store the collected data result, and after the data result reaches a preset length, output the data result outwards through the data acquisition control module.

Optionally, the master control module further sends out a working mode control signal, which further includes: and the thickness processing system is controlled in a reset mode, a data acquisition triggering mode and a start-stop mode.

Optionally, the transmission module is configured to perform network communication with an upper computer, and further includes: and finishing the network configuration of the upper computer and the transmission function of the acquired data.

Optionally, the thickness processing system further comprises: a function call interface;

the function call interface is used for selecting different measuring ranges and different input data types and coupling different acquisition frequencies and signals by calling functions;

the function of the function call interface comprises:

opening the acquisition system, configuring network parameters, resetting the acquisition system, configuring a working mode, setting a triggering mode, starting the acquisition system, reading acquisition results, stopping data acquisition, closing the acquisition system, storing calibration coefficients and reading the calibration coefficients.

Optionally, the thickness processing system further comprises: an input interface;

the input interface includes: wall-penetrating quick-plug type wiring terminal.

Compared with the prior art, the invention has the following advantages and technical effects:

1. the thickness processing system of the open-type four-column twenty-roller mill is reserved with a special function call interface, and can complete the use of functions such as different measuring ranges, different input data types selection, different acquisition frequencies, signal coupling and the like by calling functions, so that the application of a processing module is simpler, excessive software intervention is reduced, and the software development cost is reduced.

2. The thickness processing system of the open-type four-column twenty-roller mill can realize the application of a single processing module and the networking use of a plurality of processing modules, so that the application of the processing modules is more diversified.

3. The application interface software of the thickness processing system of the open-type four-column twenty-roller mill adopts modularized processing, and only one communication calling function is reserved for each function, so that the application of a user is simpler and more visual.

4. The hardware interface is simple; the input interface adopts a pluggable quick interface, so that the use is quick and convenient; the output interface is an RJ45 interface with an isolation transformer, so that the anti-interference performance is effectively improved, and the interface has universality, foresight performance and long-distance transmissibility, and reduces the application of various communication protocols.

5. Simple structure, beautiful appearance and practicality. The shell of the signal conditioning part is directly inserted into the hole site and spot welded, so that the effect of shielding interference signals is achieved; the module shell adopts a standard aluminum profile case, can be directly inserted into a profile clamping groove for fixation, has strong tightness, reduces the manufacturing cost, and is simple to install and has an increased module heat dissipation function.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application. In the drawings:

FIG. 1 is a schematic block diagram of a system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a specific functional partitioning and signal flow of a system according to an embodiment of the present invention;

FIG. 3 is a schematic block diagram of a signal conditioning portion of an embodiment of the present invention;

FIG. 4 is a schematic block diagram of the circuitry of the A/D acquisition portion of an embodiment of the present invention; wherein, (a) is a schematic block diagram of the ADS1602 and (b) is a schematic block diagram of the 74HC 594;

FIG. 5 is a schematic block diagram of a SDRAM portion of an embodiment of the present invention;

FIG. 6 is a schematic block diagram of an ARM main control section according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of an application control flow of a host computer according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a networking application of a thickness processing system of a plurality of open-type four-stand twenty-high rolling mill according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of an exemplary embodiment of an open-ended four-stand twenty-high roll thickness handling system;

FIG. 10 is a schematic diagram of specific frequency options of sampling rates according to an embodiment of the present invention;

FIG. 11 is a functional schematic of an external programming interface of an open-ended four-stand twenty-high roll mill thickness handling system according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of an input interface according to an embodiment of the present invention;

fig. 13 is a schematic view of a through-wall quick-plug connection terminal according to an embodiment of the present invention;

FIG. 14 is a schematic diagram of a thickness handling system for an open four-stand twenty-high roll mill in accordance with an embodiment of the present invention;

fig. 15 is a schematic block diagram of an EPCS4 circuit according to an embodiment of the invention;

FIG. 16 is A schematic block diagram of the circuit of the EP2C5T144I8N-A portion of the embodiment of the invention;

FIG. 17 is a schematic block diagram of the circuit of the EP2C5T144I8N-B portion of the embodiment of the present invention;

FIG. 18 is a schematic block diagram of the circuit of the EP2C5T144I8N-C portion of an embodiment of the present invention;

FIG. 19 is a schematic block diagram of the circuit of the EP2C5T144I8N-D portion of an embodiment of the present invention;

FIG. 20 is a schematic block diagram of the EP2C5T144I8N-E portion of an embodiment of the present invention;

FIG. 21 is a schematic block diagram of the circuit of the EP2C5T144I8N-F portion of an embodiment of the present invention;

fig. 22 is a schematic circuit diagram of a network transmission part according to an embodiment of the present invention; wherein, (a) is a circuit schematic diagram of a W5300 part, and (b) is a circuit schematic diagram of a FC-256GYNL part;

FIG. 23 is an overall schematic of the AD acquisition portion of an embodiment of the invention;

FIG. 24 is a schematic overall circuit diagram of a signal conditioning portion according to an embodiment of the present invention;

FIG. 25 is a schematic diagram of the overall circuit of the data acquisition control and SDRAM portion of an embodiment of the present invention;

FIG. 26 is a schematic diagram of the overall circuit of the ARM master control and network transmission portion of an embodiment of the present invention;

fig. 27 is a schematic diagram showing the external program interface content of the thickness processing system of the split four-column twenty-high rolling mill according to the embodiment of the invention.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.

The invention provides a thickness processing system of an open-type four-column twenty-roller mill, which comprises: the system comprises a conditioning module, an acquisition module, a data acquisition control module, a storage module, a main control module and a transmission module;

the signal conditioning module is used for conditioning the acquired input signals;

Further, the conditioning module performs signal conditioning on the input signal, including:

the method comprises the steps of converting the signal type of an input signal, selecting the range of the input signal and selecting the coupling mode function of the input signal.

Further, the acquisition module includes: the A/D acquisition unit and the registering unit;

the register unit is used for carrying out serial input latching on the working mode control signal issued by the main control module and outputting control through the parallel port so as to complete the connection of the sending and control of the working mode control signal.

Further, the data acquisition control module stores/reads operation data of the FPGA, including: the method comprises the steps of storing an operation program of an FPGA, calibrating parameters of an open-type four-column twenty-roller thickness processing system, inputting signals after AD conversion, and reading communication data between a data acquisition control module and a main control module.

Further, the storage module is used for storing the acquired data result, and the data result is output outwards through the data acquisition control module after the data result reaches the preset length.

Further, the working mode control signal issued by the main control module further includes: reset control of the thickness processing system, setting of a data acquisition triggering mode and start-stop control.

Further, the transmission module is used for carrying out network communication with the upper computer and comprises: and finishing the network configuration of the upper computer and the transmission function of the acquired data.

Further, the thickness processing system further includes: a function call interface;

the functions of the function call interface include:

Further, the thickness processing system further includes: an input interface;

the input interface adopts a through-wall quick-plug type wiring terminal.

Examples

The thickness processing system of the open-type four-column twenty-roller mill provided by the embodiment is a high-speed and high-performance data acquisition module which takes ARM chip STM32F103ZET6 with Cortex-M3 kernel as a core, realizes acquisition control of ADS1602 by an FPGA chip EP2C5T144I8, realizes TCP/IP protocol stack by a chip W5300 and transmits Ethernet. The module is free of jumper wires, supports various input modes such as single-ended, differential, voltage, current, AC/DC coupling and the like and measuring range of +/-10V, +/-5V, +/-1V and +/-0.1V, can set various triggering modes and sampling rates, and can realize continuous real-time data acquisition of a 1M SPS with 16-bit resolution and highest sampling rate and single buffer acquisition of a 2M SPS with highest sampling rate. The schematic block diagram of the system is shown in fig. 1.

The thickness processing system of the open-type four-column twenty-roller mill completes acquisition of voltage/current, single-end/differential and direct-current/alternating-current signals output by equipment such as a thickness detection sensor on an application site, and uploads acquired data to an upper computer through an Ethernet interface; the specific functional division and signal flow diagram of the thickness processing system of the open-type four-column twenty-roller mill are shown in fig. 2;

signal conditioning part

The circuit schematic block diagram of the signal conditioning part is shown in fig. 3, and the signal conditioning part is composed of a plurality of components such as a panasonic TQ2-5V relay, an OPA2277, an OPA1632 amplifier and the like. The part mainly issues a control command to the ARM chip through software to perform state control; controlling IIN1, DIFF-IN1 and DC1 signals to drive state conversion of the relay so as to complete conversion of inputting various signal types; the state of the relay and different amplification factors of the amplifier are regulated by controlling 10V1, X5-1 and X10-1 to finish the selection of different signal measuring ranges; 50HZ-1 and DC1 signals drive the relay to finish the selection of functions of different coupling modes; a complete circuit schematic of the signal conditioning portion is shown in fig. 24.

A/D acquisition section

The A/D acquisition part consists of ADS1602 and 74HC594 chips; ADS1602 is a high-speed, high-precision analog-to-digital converter (ADC); it uses a stable advanced modulator that samples up to 40MSPS of the input signal from fCLK and an on-chip decimation filter that uses a series of four half-band FIR filter stages to provide 75dB of stop band attenuation and 0.001dB of passband ripple.

The output analog signals AD1+, AD1 of the signal adjusting module are transmitted into the ADS1602 chip for AD conversion, and the conversion result is provided at a rate as high as 2.5MSPS through FS01, DOUT1, SCLK and 3-wire serial interfaces. The output data or the complementary format thereof is directly connected to the FPGA; all functions of the ADS1602 are controlled by dedicated I/O pins, simplifying operation by eliminating the use of on-chip registers.

The 74HC594 has the main functions of carrying out serial port input latching on the working mode control command issued by each ARM chip and outputting control through a parallel port so as to complete the connection of command sending and control. The schematic block diagram of the A/D acquisition part is shown in FIG. 4; wherein (a) of fig. 4 is a schematic block diagram of the ADS1602, and (b) of fig. 4 is a schematic block diagram of the 74HC 594; a complete circuit schematic of the a/D acquisition section is shown in fig. 23.

Data acquisition control part

The data acquisition control part consists of an EP2C5T144I8N, EPCS chip; the main functions of the part are storing the running program of the FPGA, storing calibration parameters, storing data after AD conversion, communicating with ARM, reading data and the like, and the circuit of the EPCS4 chip is shown in figure 15;

since FPGA is of SRAM structure, the running program is lost after power down, EPCS4 is required as its configuration chip. The function program is burned into a configuration chip of the FPGA for storage, and when the FPGA device is powered on each time, the FPGA device is used as a controller to actively send out NCS1 high-efficiency chip selection signals to the configuration device EPCS, and parameters are stored/read after being matched with DCLK, ASDI, DATA commands, so that the EPCS data are read into the FPGA, and the programming of the FPGA is realized.

The data acquisition control part adopts a cyclic II series chip EP2C5T144I8N chip which is proposed by Altera company as a core processor for design, and the chip is packaged by a 8in speed class 144 pin TQFP. As shown in fig. 16, part a of EP2C5T144I8N, when the NCS signal is a chip select signal of EPCS4, the control of the EPCS4 chip can be performed when this signal is valid; the AD_SYNC is an AD acquisition synchronous control output signal, and when the AD_FS01 and AD_SCLK signals are simultaneously set high, the AD_DOUT1 data can be continuously acquired after t DHD time and transmitted into the FPGA; as shown in fig. 17, in the part B of EP2C5T144I8N, the fpga_rst implements reset control of the ARM on the FPGA, and the ARM implements data transmission control between the ARM and the FPGA through fifo_rd and fifo_full, and the fifos_do to D15 implement data transmission between the FPGA and the ARM; as shown in fig. 18, the C part of EP2C5T144I8N mainly realizes the storage control and address selection of the FPGA to the SDRAM; as shown in fig. 19, the part D of EP2C5T144I8N realizes functions of FPGA enabling, chip selection control of the SDRAM by the FPGA, data transmission, and the like; as shown in fig. 20, the E part of EP2C5T144I8N realizes functions of ARM to FPGA software reset, clock control, read-write control, partial data transmission line, etc.; as shown in fig. 21, part F of EP2C5T144I8N has JTAG interface definition of FPGA download program and clock and data transmission control of EPCS4, and LED3 red indicator light continuously blinks as an FPGA chip normal operation indication; the H part of EP2C5T144I8N is reserved with 1KHz, the self-test interface of trigger signals and part of data transmission addresses of SDRAM.

SDRAM portion

The circuit schematic block diagram of the SDRAM part is shown in FIG. 5, and the SDRAM storage part consists of an HY57V56162 chip; HY57V561620 is a 32M memory chip; in a continuous data acquisition mode, FIFO is realized in the FPGA, and storage expansion is provided outwards; the FPGA selects SDRAM memory through S_NCS, cooperates with S_CLE clock signals, S_B0 and S_B1 select memory group addresses, S_NCAS and S_NRAS signals select memory row and column addresses, acquired data results are stored in SDRAM, and data are output outwards through the same interface as the FIFO after acquiring the required length. A complete circuit schematic diagram of the data acquisition control and SDRAM portion is shown in fig. 25.

ARM main control part

The ARM main control part consists of a chip STM32F103ZET 6; STM32F103ZET6 is a flash memory with a speed of 72MHz CPU and up to 1MB, containing motor control peripherals and CAN and USB full speed interface ARM Cortex-M3 chips; the part mainly completes the functions of interaction between an ARM chip STM32F103ZET6 and an FPGA, transmission of network data between the interaction and a W5300 and the like;

the interaction modes between ARM and FPGA are as follows:

A. reset control of FPGA

The high level and the low level of the FGPA_RST output pin on the ARM chip are directly used for controlling;

B. setting and start-stop control of data acquisition triggering mode

In the execution process of two commands (a trigger mode is set, data acquisition is started) of parameters are transmitted to the FPGA by ARM and a data acquisition stopping command of the parameters is not required to be transmitted, in order to simplify the implementation of the FPGA program, the method is designed as follows: ARM transmits 4 bytes of data to FPGA each time, the first byte is a command code, and the three bytes at the back are corresponding command parameters;

during communication, ARM sets the FPGA_BAK pin high, starts one-time command transmission, and sends out1 byte of control data in each period of setting high and low FPGA_WR until 4 bytes of data are sent out, and then sets the FPGA_BAK low; after detecting that the FPGA_BAK signal is high, the FPGA receives 4 bytes of data according to the FPGA_WR signal, controls the ADC data acquisition process and the storage of the result through the analysis and the processing of the command, and reflects whether the data acquisition is in progress or not according to the state of the FPGA_ACK pin.

Before the data acquisition is started but no effective acquisition result is uploaded, the ARM end can regularly upload the data invalid mark 0x5555 through a data bus and W5300 to be received by a host computer until the FIFO_FULL signal is detected for the first time, the 1-time data valid mark 0xAAAA is sent, and then continuous transmission of effective data is started until a data acquisition stop command is received (in a continuous data acquisition mode) or SDRAM is read empty (in a single data acquisition mode); the schematic block diagram of the ARM master control section is shown in FIG. 6.

Network transmission

The network transmission part mainly comprises a typical chip W5300 of network application, a communication instruction and an RJ45 interface of a network transformer FC-256 GYNL; the part mainly completes the network configuration of the upper computer and the transmission function of the collected data.

The W5300 is internally integrated with an Ethernet PHY of 10BaseT/100BaseTX, and the BIT16EN signal of the W5300 is +3.3V, so the width of a data bus is set to be 16 BITs; the test_MODE [3:0] signals are all grounded, the signals are configured to be 0, and the MII interface is an internal PHY; the OP_MODE [2:0] signals are all grounded, so automatic answer (full duplex/half duplex MODE) is supported; w5300 is connected with an RJ45 interface through TXOP, TXON, RXIP, RXIN signals and is in network communication with an upper computer; the L-LINK and ACT-LED of the RJ45 interface provide information transmission flashing indicator lights; the schematic circuit diagram of the network transmission part is shown in fig. 22, in which (a) of fig. 22 is a schematic circuit diagram of the W5300 part, and (b) of fig. 22 is a schematic circuit diagram of the FC-256GYNL part.

A complete circuit schematic diagram of the ARM master and network transport portion is shown in fig. 26.

System performance index requirements

The processing module takes ARM and FPGA as processing units, and the following functions are satisfied through each function submodule:

1. independent acquisition of single end or differential is supported;

2.16 bit a/D resolution;

3. signal coupling mode: AC. A DC;

4. the input range is optional: 10V; 5V; 1V; + -0.1V; or 4-20mA of current type; (software configuration);

5. the highest sampling rate of the signal is 2M SPS (1M SPS when continuously collected), can divide down frequency, and can provide sampling rates of 10KHz, 20KHz, 50KHz, 100KHz, 200KHz, 500KHz and 1 MHz; (software configuration);

6. when the input range is +/-5V, the signal acquisition precision and the stability precision are not lower than +/-1 mV; when the input range is +/-10V, the signal acquisition precision and the stability precision are not lower than +/-2 mV; when the input range is +/-1V, the signal acquisition precision and the stability precision are not lower than +/-0.4 mV; when the input range is +/-0.1V, the signal acquisition precision and the stability precision are not lower than +/-0.05 mV;

7. the bandwidth of the input signal is DC-500KHz;

8. program-controlled analog low-pass filtering, and the cut-off frequency is adapted to the sampling rate; (software configuration);

9. supporting external digital quantity triggering, software triggering, signal rising edge triggering and falling edge triggering; (software configuration);

10.16MB SDRAM data storage;

11. the module configuration and the data reading adopt an Ethernet interface, and the module input interface is in a pluggable interface form;

12. the module works as a server

13. The module is powered by direct current of +24V, and has an error connection preventing function;

14. the board card reserves the position of the shielding shell of the collecting part.

A card drawing and labeling of the thickness processing system of the open-type four-column twenty-roller mill is shown in fig. 14.

Application of thickness treatment system of open-type four-column twenty-roller mill

Application of thickness treatment system of single-opening four-column twenty-roller mill

When the thickness processing system of the open-type four-column twenty-roller mill is communicated with an upper computer, network parameter setting is needed first, and under the condition that network connection is normal, an upper computer application program can complete the work of establishing network connection and configuring network parameters by calling corresponding interface functions in a DLL file.

Secondly, software reset, configuration working mode (single-ended signal acquisition, differential signal acquisition, current signal acquisition, direct current coupling, alternating current coupling, 50HZ notch), signal range (10V, 5V, 1V, 0.1V) signal triggering mode (software triggering, digital high/low level triggering, channel1 analog signal rising/falling edge triggering), data acquisition starting, acquisition result reading, data acquisition stopping, network connection disconnection, calibration coefficient storage, calibration coefficient reading and other operations of the thickness processing system of the four-column twenty-rolling mill need an upper computer channel interface function to send control commands; the operations of establishing network connection, reading data acquisition results, disconnecting network connection and the like are realized by pure software of an upper computer, and the control command is not transmitted to the acquisition module through a network.

After the data acquisition is started, the thickness processing system of the open-type four-column twenty-roller mill no longer responds to commands except for stopping the data acquisition. In the data acquisition process, if the TCP connection is disconnected, the data acquisition can automatically stop, and a command is sent to restart detecting network configuration and opening an acquisition module after the next connection; the upper computer application control flow is specifically shown in fig. 7;

application of a thickness treatment system of a plurality of open-type four-column twenty-roller mills;

when networking is applied to a thickness processing system of a plurality of open-type four-column twenty-roller mills, on the basis of single processing module application, the IP address equipment of an upper computer and each processing module is 192.168.0 (at most 255 processing modules); note that the IP addresses of the upper computer and each processing module cannot be the same, otherwise communication conflicts occur, and a specific network diagram is shown in fig. 8;

the function introduction of the thickness processing system of the open-type four-column twenty-roller mill;

mode of operation

The thickness processing system of the open-type four-column twenty-high rolling mill can realize the collection of current and voltage (single-end/differential) signals according to different types of signals to be detected and is matched with different coupling modes;

when the acquired signal is a current signal, a standard current signal with the signal range of 4-20mA is required to be input, and the current signal is converted into an output signal with the voltage signal of 1-10V through the processing module;

selecting direct current coupling/alternating current coupling according to the acquired signal processing requirements, wherein the default coupling mode of the processing module is direct current coupling;

because the working environment of the thickness processing system of the open-type four-column twenty-roller mill is in an industrial application site, the interference signals are power frequency signals, the 50HZ notch function can be selected to eliminate the power frequency interference signals, and the processing module defaults to a 50HZ notch function closing state;

the specific operation mode is shown in fig. 9;

working range

According to different amplitudes of input signals, the working range of the thickness processing system can be adjusted according to actual conditions, and the specific working range is divided into +/-10V, +/-5V, +/-1V and +/-0.1V;

triggering mode

The trigger mode of the thickness processing system is also configured by upper computer software, the default trigger mode is software trigger, and the specific trigger mode is divided into:

software triggering

Digital high level triggering

Digital low level triggering

Channel1 analog signal rising edge trigger

Channel1 analog signal falling edge trigger

Sampling arrangement

According to the frequency of the acquired signals, different sampling rates can be selected, the default sampling rate of the thickness processing system is 10K SPS, and specific frequency options are shown in FIG. 10;

programming interface description

The communication process of the thickness processing system of the open four-column twenty-roller mill can be realized through functions encapsulated in a dynamic link library Net1602.Dll (supplied by AMC company); the application interface software of the processing system adopts modularized processing, so that each function can be realized only by calling a certain function, and the application is simpler and clearer; the function definition and description are as follows:

programming interface description

The external program interfaces of the thickness processing system (hereinafter referred to as thickness processing system) of the open-type four-column twenty-roller mill are mainly divided into 11 types, and the specific content is shown in fig. 27;

1. opening thickness processing system (establishing network connection)

long Net1602_OpenDev(long CardNo,unsigned char IPByte1,unsigned char IPByte2,unsignedchar IPByte3,unsigned char IPByte4)；

The function realizes the opening of the thickness processing system and the establishment of network connection, and is the first function which must be called when the acquisition is performed. The card number of the specified thickness processing system (range 1-256) is CardNTO, and the IPByte 1-IPByte 4 are 4 bytes of the IP address of the network port of the thickness processing system to be connected. The call succeeds, returns 0, and fails to return a negative number.

2. Configuring network parameters

long Net1602_ConfigNetPara(long CardNo,unsigned char*IPAddr,unsigned char*MACAddr)；

The function is used to implement the configuration of the thickness processing system network parameters. Where CardNo is the card number (range 1-256) of the thickness processing system to be operated, IPAddr is the 4-byte new IP address to be set (1 byte is stored per array element, stored in natural order of IP address), MACAddr is the 6-byte MAC address to be set. The call succeeds, returns 0, and if the call fails, the thickness processing system is shut down and a negative number is returned.

If the default network parameters of the thickness processing system are not in compliance with the system requirements, the function may be invoked for reconfiguration after the thickness processing system is turned on using the default network parameters. After the configuration is finished, the new network parameters are stored in Flash of the thickness processing system, and power failure is avoided. To validate the new network parameters, a function is called to perform a software reset of the thickness processing system or to power up the thickness processing system again to achieve a hardware reset.

The subnet mask of the thickness processing system is fixed to 255.255.255.0, the server connection port is fixed to 8000, and the default gateway is fixed to a machine with the same network segment host number of 1, and cannot be independently set.

3. Thickness processing system software reset

longNet1602_ResetDev(long CardNo)；

The function resets the thickness processing system software and then performs network listening and connection according to the new network parameter configuration. Where CardNo is the card number (range 1-256) for which the thickness processing system is to be operated. The call succeeds, returns 0, and fails to return a negative number. Whether successful or not, the thickness processing system is automatically shut down, and the thickness processing system is first turned on before operating again after reset.

If the thickness processing system is performing data acquisition during software reset or hardware reset, the data acquisition is automatically stopped after the reset, the triggering mode is restored to the default setting, and the working mode still keeps the state before the reset.

4. Configuration of working modes (setting of content range, filtering, etc.)

long Net1602_ConfigWorkMode(long CardNo,unsigned char Channel1Mode,unsigned char Channel2Mode)；

The function configures an operating mode of the thickness processing system. Wherein, cardNo is the card number (range 1-256) of the thickness processing system to be operated, and Channel1Mode is the working Mode control byte of the Channel; the call succeeds, returns 0, and if the call fails, the thickness processing system is shut down and a negative number is returned.

The meaning of the bits of the mode control byte is shown in table 1 below:

TABLE 1

5. Setting triggering mode (including triggering level setting)

Long Net1602_SetTrigMode(long CardNo,unsigned char TrigMode,signed char TrigLevel)；

The function configures a trigger mode of the thickness processing system. Wherein, cardNTO is the card number (range 1-256) of the thickness processing system to be operated, trigMode is set in a trigger mode, and TrigLevel is set in a trigger level. The call succeeds, returns 0, and if the call fails, the thickness processing system is shut down and a negative number is returned.

TrigMode values are shown in table 2 below:

TABLE 2

Value of	Meaning of
		0	Software triggering
1	Digital high level triggering
		2	Digital low level triggering
3	Analog signal rising edge triggering
		4	Analog signal falling edge trigger
Others	Software triggering

After the trigger is carried out by using the edge of the analog signal, the TrigLevel is effective, the value is the voltage percentage of the trigger signal under the corresponding range, the range is-95 to +95, and the upper limit or the lower limit is automatically taken if the range is exceeded, for example: at a range of + -10V, the TrigLevel is 10, the edge trigger level is 1V, the TrigLevel is-30, and the edge trigger level is-3V. In the software triggering and digital quantity triggering modes, trigLevel is invalid.

6. Starting thickness processing system (with acquisition mode setting)

Long Net1602_StartSample(long CardNo,unsigned char ChannelSel,unsigned charSampleRate,unsigned char ContinuousFlag,unsigned short SampleCount)；

The function initiates data acquisition after setting the sampling rate and acquisition mode. Where CardNo is the card number (range 1-256) of the thickness processing system to be operated, channelSel is the channel to be started for acquisition, sampleRate is set for sampling rate, continuousFlag is a flag for whether continuous acquisition is performed (only the lowest bit is valid, 1 is continuous acquisition, 0 is single acquisition), sampleCount is the number of sampled data sets in single acquisition (4096 bytes per group, sampleCount needs to be a multiple of 4, maximum valid value 8192, automatically takes the value when set to 0 or exceeding the value, and the parameter is invalid when continuous acquisition). The call succeeds, returns 0, and if the call fails, the thickness processing system is shut down and a negative number is returned.

The values of the parameters are shown in the following table 3:

TABLE 3 Table 3

The working mode is changed after the data acquisition is started or the triggering mode is invalid.

7. Reading the data acquisition result

long Net1602_ReadData(long CardNo,unsigned short WantByteCount,short*ResultArray)；

The function is used to read the data acquisition of the thickness processing system. Where CardNo is the card number (range 1-256) to operate the thickness processing system, wantByteCount is the number of bytes to read (cannot be 0 or odd), and resultary is the array to store the result data. The call is successful, the return value is equal to WantByteCount or 0 (no valid data is read this time), and if the call fails, the thickness processing system is shut down and a negative number is returned.

8. Stopping data acquisition

longNet1602_StopSample(long CardNo)；

This function is used to stop the data acquisition of the thickness processing system. Where CardNo is the card number (range 1-256) for which the thickness processing system is to be operated. The call succeeds, returns 0, and if the call fails, the thickness processing system is shut down and a negative number is returned.

After stopping the data acquisition, the working mode and the triggering mode of the thickness processing system cannot be changed until the system is powered down, until the next resetting is performed, but the unread data are discarded.

9. Shut down thickness processing system (breaking network connection)

longNet1602_CloseDev(long CardNo)；

The function is used to shut down the thickness processing system, freeing up the corresponding system resources. Where CardNo is the card number (range 1-256) for which the thickness processing system is to be operated. The function always returns 0.

10. Storing calibration coefficients

longNet1602_SaveCalcPara(long CardNo,float*ParaArray)；

This function is used to store calibration coefficients or other data to the Flash portion of the thickness processing system after the thickness processing system is turned on. Wherein, cardNTO is the card number (range 1-256) of the thickness processing system to be operated, paraArray is a coefficient array, and 16 floating data (k and b coefficients of 8 groups of ADC values converted into voltage values under 4 measuring range of two channels can be stored) are contained, and the automatic cut-off is exceeded, and zero is filled if the automatic cut-off is insufficient. The call succeeds, returns 0, and if the call fails, the thickness processing system is shut down and a negative number is returned.

11. Reading the calibration coefficient

longNet1602_ReadCalcPara(long CardNo,float*ParaArray)；

This function is used to read 16 calibration coefficients or other data from the Flash portion of the thickness processing system after the thickness processing system is turned on. Wherein, cardNOs are card numbers (range 1-256) of the thickness processing system to be operated, paraArray is an array for storing the read results, and the storage sequence after reading is consistent with the sequence in the previous writing. The call succeeds, returns 0, and if the call fails, the thickness processing system is shut down and a negative number is returned.

Note that: in the above functions, if the parameter setting is correct and the function call fails, the network connection is disconnected, and the system is automatically closed. The relevant command must be sent after the system is re-opened.

The meaning of the return values of the functions is shown in table 4 below:

TABLE 4 Table 4

In practical use, in order to avoid errors, the parameter settings related to programming should use predefined symbol constants in the net1602.H header file as much as possible.

System architecture

Shell structure

The shell structure of the thickness treatment die of the open-type four-stand twenty-high rolling mill adopts a standard aluminum-type machine box, so that the processing difficulty and the cost are reduced, the assembly structure is compact and simple, the tightness is strong, and the anti-interference performance and the heat dissipation function of the treatment module are also improved by the material; the specific structure is shown in fig. 11:

input/output interface structure

The input interface adopts the through-wall quick-plug type wiring terminal, so that the tightness of the structure is ensured, and the effective and quick connection of the input interface is ensured, as shown in fig. 12-13;

the output interface adopts the RJ45 interface with the transformer, so that the signal transmission and the anti-interference performance can be enhanced, and meanwhile, the RJ45 interface is used, so that the communication protocol of the processing module is simplified, excessive interface development and conversion are not needed, and the application of the processing module is wider.

The thickness processing system of the open-type four-column twenty-roller mill provided by the embodiment has the advantages that:

4. The data acquisition control main chip EP2C5T144I8N of the processing module, the ARM main control chip STM32F103ZET6, the AD acquisition chip ADS1602 and the network port processing chip W5300; the main chip selection of the functional modules has the typical property of the same functional chip, and is the best choice with higher cost performance in the market.

And 5.ARM chip STM32F103ZET6 is used as a core, and the synchronous acquisition control of two high-speed ADC chips ADS1602 can be realized by an FPGA chip EP2C5T144I8, so that a foundation is provided for the subsequent board card interface expansion design.

6. The hardware interface is simple; the input interface of the processing module adopts a pluggable quick interface, so that the processing module is quick and convenient to use; the output interface is an RJ45 interface with an isolation transformer, so that the anti-interference performance is effectively improved, and the interface has universality, foresight performance and long-distance transmissibility, and reduces the application of various communication protocols.

7. Simple structure, beautiful appearance and practicality. The shell of the signal conditioning part is directly inserted into the hole site and spot welded, so that the effect of shielding interference signals is achieved; the module shell adopts a standard aluminum profile case, can be directly inserted into a profile clamping groove for fixing, has strong tightness, reduces the manufacturing cost, is simple to install and increases the module radiating function.

The foregoing is merely a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An open four-stand twenty-high rolling mill thickness handling system, comprising: the system comprises a conditioning module, an acquisition module, a data acquisition control module, a storage module, a main control module and a transmission module;

the conditioning module is used for conditioning the acquired input signals;

the transmission module is used for carrying out network communication with the upper computer;

the conditioning module for conditioning an input signal comprises:

converting the signal type of the input signal, selecting the range of the input signal and selecting the coupling mode function of the input signal;

the acquisition module comprises: the A/D acquisition unit and the registering unit;

the register unit is used for carrying out serial port input latching on the working mode control signal issued by the main control module and outputting control through a parallel port so as to complete the connection between the sending and control of the working mode control signal;

the data acquisition control module stores/reads operation data of the FPGA, and the operation data comprises: storing an operation program of an FPGA, calibrating parameters of an open-type four-column twenty-roller thickness processing system, AD-converted input signals, and reading communication data between the data acquisition control module and the main control module;

the thickness processing system further includes: a function call interface;

the function call interface is used for selecting different input data types with different measuring ranges and coupling different acquisition frequencies and signals by calling functions;

the function of the function call interface comprises:

opening the acquisition module, configuring network parameters, resetting the acquisition module, configuring a working mode, setting a triggering mode, reading an acquisition result, stopping data acquisition, closing the acquisition module, storing a calibration coefficient and reading the calibration coefficient.

2. The thickness processing system of the open type four-column twenty-roller mill according to claim 1, wherein the storage module is used for storing collected data results, and the data results are output outwards through the data acquisition control module after the data results reach a preset length.

3. The thickness processing system of an open-type four-stand twenty-high rolling mill of claim 1, wherein the main control module is configured to send out an operation mode control signal, and further comprises: and the thickness processing system is controlled in a reset mode, a data acquisition triggering mode and a start-stop mode.

4. The split four-stand twenty-high rolling mill thickness processing system of claim 1, wherein the transmission module is configured to communicate with an upper computer via a network, and further comprises: the functions of network configuration, data acquisition and upper computer transmission of the upper computer are completed.

5. The open-ended four-stand twenty-high rolling mill thickness treatment system of claim 1, further comprising: an input interface;

the input interface includes: wall-penetrating quick-plug type wiring terminal.