CN107831702B - A kind of synchronous serial signal acquisition and control device based on gigabit Ethernet - Google Patents
A kind of synchronous serial signal acquisition and control device based on gigabit Ethernet Download PDFInfo
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- CN107831702B CN107831702B CN201711150792.0A CN201711150792A CN107831702B CN 107831702 B CN107831702 B CN 107831702B CN 201711150792 A CN201711150792 A CN 201711150792A CN 107831702 B CN107831702 B CN 107831702B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention discloses a kind of synchronous serial signal acquisition and control device based on gigabit Ethernet, which includes SSI signal pickup assembly, main control unit, gigabit Ethernet communication device and host computer；Gigabit Ethernet communication device realizes the connection with SSI signal pickup assembly by main control unit；SSI signal pickup assembly is directly connect with external sensor, acquires sensor raw data；Host computer is carried out data transmission with gigabit Ethernet communication device using udp protocol, and hardware connection is needed using the cable for supporting gigabit transmission rate.The present invention uses gigabit Ethernet communication interface, compared with traditional PCI, usb bus, transmission rate greatly improves, therefore greater number of acquisition channel can be supported, and the peripheral sensors of higher frequency acquisition, meanwhile, Ethernet interface is easy to connect and communication distance is farther, it can be also attached with the plurality of devices such as Ethernet switch, individual PC, industrial personal computer, have the characteristics that networking flexibility, transmission are reliable, low in cost.
Description
Technical field
The present invention relates to the acquisition of industrial measurement and control FIELD Data and control devices more particularly to a kind of based on gigabit Ethernet
Synchronous serial signal acquisition and control device.
Background technique
Data acquisition be field of industrial production important link, realize Industry Control premise be exactly will be in industrial production
Significant data is acquired and is transferred to control device, and data acquisition must satisfy the requirement of real-time and accuracy, ability
Guarantee that industrial processes obtain good detect and control.In the industrial applications such as assembly line, mechanical arm, displacement, angle
The monitoring of equal location informations is particularly important, these information are generally collected by position sensors such as photoelectric encoders.Absolute value
A kind of synchronous serial interface SSI (Synchronous Serial is widely used in the sensors such as encoder, linear movement pick-up
Interface), SSI signaling rate is fast, line is simple and has preferable anti-interference ability, and farthest transmission range is reachable
500m.But industrial personal computer and PC do not provide SSI interface generally, and current SSI data collecting card mostly uses PCI, CPCI, PXI etc. to connect
Mouthful, expensive and installation is complicated, need to be fixed in the slot of industrial personal computer and use, at the same the host computer of these interfaces use and
Exploitation is required to install corresponding driving, and use is complex.
Gigabit Ethernet (Gbit Ethernet) be defined by 802.3 standard of IEEE one kind with Gigabits per second rate
Transmit ethernet frame network transmission technology, establish on the basis of standard ethernet technology, include CSMA/CD agreement, with
The too technical specifications such as management object defined in net frame, full duplex, flow control and IEEE802.3 standard, have sent out at present
Exhibition is mainstream network technology.Gigabit ethernet interface is used for data acquisition device, has that transmission rate is fast, has a wide range of application, even
Connect conveniently, the advantages such as maintenance cost is low.Currently, gigabit ethernet card has been widely used for all kinds of PC computers and industrial personal computer.
Therefore, a kind of synchronous serial signal acquisition and control device based on gigabit Ethernet is designed, it can accurately at high speed
Acquisition and upload SSI signal, while the portability of device, flexibility are improved, application is also not limited to industrial personal computer,
Other any equipment equipped with gigabit Ethernet mouth such as personal PC can also be connected, or even can also be by having wireless transmission
Ethernet switch be converted to wireless transmission method, this greatly reduces signal acquisition cost, while having expanded data acquisition
The usage scenario of device, these all to the automation in industrial production and are controlled with positive facilitation.
Summary of the invention
The present invention mentions aiming at the problem that industrial personal computer is difficult to directly acquire SSI signal and the acquisition of SSI signal multi-channel high-speed
A kind of synchronous serial signal acquisition and control device based on gigabit Ethernet is gone out.
The purpose of the present invention is what is be achieved through the following technical solutions: a kind of synchronous serial signal based on gigabit Ethernet
Acquisition control device, the device include SSI (synchronous serial) signal pickup assembly, main control unit, gigabit Ethernet communication device,
And host computer；
SSI signal pickup assembly includes differential level conversion module, voltage protection module and DB-25 connection mouth seat；SSI signal
Sensor, DB-25 connection mouth seat, voltage protection module and differential level conversion module are sequentially connected；Voltage protection module prevents electricity
Press through wafer damage caused by height；One group of differential clock signal that differential level conversion module exports SSI signal transducer and
One group of differential data signals is respectively converted into single-ended signal and is transferred to main control unit；
Gigabit Ethernet communication device includes gigabit Ethernet physical layer management chip and Ethernet interface seat；Gigabit ether
Net physical layer management chip connects the MAC-layer interface and transmission medium interface in main control unit, to realize ethernet physical layer
Function, such as realize physics encoding and decoding and realize serioparallel exchange；Ethernet interface seat connects gigabit Ethernet by difference cabling
Physical layer management chip connects host computer by surpassing five class network cables, while being built-in with LED light, instruction network connection and biography
Defeated state；
Nucleus module of the main control unit as signal acquisition and control device, the function for whole device is realized and timing control
System, a portion resource are connect to realize embedded gigabit Ethernet MAC layer controller by MAC-layer interface and transmission medium
The existing connection with external gigabit Ethernet physical layer management chip of cause for gossip, another part resource is to realize to SSI signal acquisition
The timing control of device, meanwhile, some resource is to realize SSI signal pickup assembly, gigabit Ethernet communication device
With the Collaborative Control of host computer, such as parsing to PC control order and realization, SSI signal pickup assembly timing control process
The coordination etc. of timing control process is uploaded with data；
Host computer includes control panel and display panel two parts, and control panel is acquired for setting and configured transmission, this
A little parameters correspond to specific control instruction and are issued to main control unit through Ethernet transmission, and display panel is for showing main control unit
The sensing data of biography.
Further, the main control unit is based on FPGA, and chip model is the SPARTAN6 series of Xilinx company
Fpga chip XC6SLX16FTG256, using AS configuration mode, i.e. active series arrangement mode carries out hardware configuration, and configuration uses
PROM chip be the XCF04SVO20C chip of Xilinx company, while retaining jtag interface for debugging, master clock frequency is
50MHz；Main control unit is in standby after powering on, and starts control command until receiving the acquisition that host computer issues, then
Acquisition parameter is configured according to control command and starts acquisition control timing, and control SSI signal pickup assembly carries out signal acquisition, together
When, every to complete the acquisition of data, main control unit starts a data upload process, by gigabit Ethernet communication device to
Host computer sends the data that this time collects, once host computer issues halt instruction, main control unit stops acquisition and uploads
Process, into standby mode；
Further, the SSI signal pickup assembly includes differential level conversion module, voltage protection module and DB-25
Interface block, differential level conversion module use MAX490490ESA chip, and the differential signal of input can be converted to+5V number
Signal, voltage protection module use 5.1V voltage-stabiliser tube, circuit caused by avoiding input voltage excessively high and wafer damage, DB-25 connection
Mouth seat signal arrangement is close, and area occupied is smaller, and is attached with sensor with can be convenient；Gigabit Ethernet communication device
Including gigabit Ethernet physical layer management chip and Ethernet interface seat, gigabit Ethernet physical layer management chip is used
The RTL8211EG chip of Realtek company is configured to Gbit (gigabit) communication pattern, MAC-layer interface choosing using 25MHz crystal oscillator
With gmii interface, transmission medium interface selects MDIO interface, and the company with main control unit is realized by gmii interface and MDIO interface
It connects, gmii interface is used for the data communication of gigabit Ethernet MAC layer and physics interlayer, and MDIO interface is for realizing to Ethernet object
The configuration of layer parameter is managed, Ethernet interface seat uses HR911130A model standard RJ-45 connector, realizes ethernet physical layer pipe
The physical connection of chip and network cable is managed, while embedded two LED are used to indicate Ethernet connection and communications status；All moulds
The power supply of block is all made of the power management chip of TI company, and the input voltage of device is 12V, and main control unit uses individual 3.3V
It powers with 1.2V, other modules it is also required to provide 3.3V all the way and 5V powers all the way.
Further, the control flow which uses is as follows: (1) user passes through PC control panel setting acquisition ginseng
Several and configured transmission, acquisition parameter include acquisition clock frequency, acquisition channel number and channel data bit wide etc., and configured transmission includes
The IP address of acquisition device and host computer, port numbers etc.；(2) user starts collection process, and host computer passes through under gigabit Ethernet
Enabled instruction and control instruction are sent out to main control unit, main control unit receives instruction, configures acquisition clock frequency, acquisition according to instruction
The acquisition parameters such as port number and channel data bit wide simultaneously start synchronous serial signal acquisition timing；(3) SSI signal acquisition module is opened
Beginning work simultaneously transfers data to main control unit, and main control unit encodes data according to 16 systems, and according to udp protocol into
Host computer is uploaded to by gigabit Ethernet in real time after row package, data transmission is transmitted in the form of parcel, at package
Reason and transmission process holding time are extremely short, therefore the real-time upload of data may be implemented；(4) host computer processing passes through gigabit ether
The data packet that net receives parses packet content, the data received is formatted and with binary system or Gray code
Format be shown in the display panel of host computer；(5) if data acquisition terminates, user stops collection process, and host computer issues
Halt instruction acquires timing and stops to main control unit.
The beneficial effects of the present invention are: the present invention has designed and Implemented industrial personal computer to the synchronization of multichannel SSI signal, high-precision
Degree and high-speed acquisition；Accurate, the stable acquisition of SSI signal may be implemented in SSI signal pickup assembly with voltage protection；Thousand
Mbit ethernet uploads mode, and compared with traditional PCI, usb bus, transmission rate is greatly improved, and can support greater number of adopt
Collect the sensor device in channel and higher frequency acquisition, meanwhile, Ethernet interface is easy to connect and communication distance is farther, can also be with
The plurality of devices such as Ethernet switch, individual PC, industrial personal computer are attached, reliable, low in cost etc. with networking flexibility, transmission
Feature.
Detailed description of the invention
Fig. 1 is overall structure block diagram of the invention；
Fig. 2 is the hardware block diagram of acquisition control device of the invention；
Fig. 3 is SSI signal pickup assembly circuit diagram of the invention；
Fig. 4 is gigabit Ethernet communication device circuit diagram of the invention；
Fig. 5 is gigabit Ethernet communication device PCB figure of the invention；
Fig. 6 is host computer interface schematic diagram of the invention.
Specific embodiment
The present invention will be further described below with reference to the drawings.
As shown in Figure 1, a kind of synchronous serial signal acquisition and control device based on gigabit Ethernet provided by the invention, packet
Include SSI signal pickup assembly, main control unit, gigabit Ethernet communication device and host computer；Gigabit Ethernet communication device is logical
The connection of main control unit realization and SSI signal pickup assembly is crossed, and realizes and the control of SSI signal pickup assembly and data is adopted
Collection；SSI signal pickup assembly is directly connect with external sensor, acquires sensor raw data；Host computer and gigabit Ethernet
Communication device is carried out data transmission using udp protocol, and hardware connection is needed using the network cable for supporting gigabit transmission rate.This
Invention uses gigabit Ethernet communication mode, and compared with traditional PCI, usb bus, transmission rate is greatly improved, therefore can be propped up
Greater number of acquisition channel, and the peripheral sensors of higher frequency acquisition are held, meanwhile, Ethernet interface is easy to connect and logical
Communication distance is farther, can also be attached with the plurality of devices such as Ethernet switch, individual PC, industrial personal computer.
As shown in Fig. 2, synchronous serial signal acquisition and control device hardware components include SSI signal pickup assembly, master control list
Member and gigabit Ethernet communication device；SSI signal pickup assembly includes differential level conversion module, voltage protection module and DB-
25 interface blocks；The one group of clock and one group of data difference that differential level conversion module exports SSI (synchronous serial) signal transducer
Sub-signal is converted to single-ended signal and is transferred to main control unit；Voltage protection module be connected to DB-25 connection mouth signal input part and
Between level switch module, wafer damage caused by overtension is prevented；BD25 interface block is used to export with SSI signal transducer
End is directly connected to；Gigabit Ethernet communication device includes gigabit Ethernet physical layer management chip and Ethernet interface seat；Gigabit
Ethernet physical layer managing chip is to realize physical layer function, such as realization physics encoding and decoding and realization serioparallel exchange, connection
MAC-layer interface and transmission medium interface in main control unit；Ethernet interface seat connects physical layer management chip and grid line
Cable, while being built-in with LED light instruction network connection and transmission state；Nucleus module of the main control unit as signal pickup assembly,
Function for realizing whole device is realized and timing control, and a portion resource is to realize embedded gigabit Ethernet MAC
Layer controller, realizes the connection with external physical layer-management chip, and another part resource is used to realize to SSI signal pickup assembly
Timing control, meanwhile, integral control function of some resource to realization device.
As shown in figure 3, SSI signal pickup assembly includes differential level conversion module, voltage protection module and two DB-25
Standard interface, differential level conversion module use MAX490490ESA chip, the differential signal of input can be converted to+5V number
Word signal, device export the clock signal of a pair of of difference to sensor, and the data that sensor then inputs a pair of of difference to device are believed
Number, clock signal is controlled by main control unit and is generated, and is exported after device conversion, data-signal is then generated by sensor, through this
It is transferred to main control unit in a serial fashion after device conversion；Voltage protection module uses 5.1V voltage-stabiliser tube, the electricity with particular value
Resistance composition protection circuit, can be to avoid the excessively high caused circuit of input voltage and wafer damage；Single BD-25 standard interface can connect
Four road SSI signals are connect, have grounding pin as insulation blocking between every road signal.
As shown in figure 4, gigabit Ethernet communication device includes gigabit Ethernet physical layer management chip and Ethernet interface
Seat, RTL8211EG chip of the gigabit Ethernet physical layer management chip using Realtek company, chip operating voltage 3.3V,
Using 25MHz crystal oscillator, it is configured to Gbit (gigabit) communication pattern；Chip is realized and master control list using gmii interface and MDIO interface
Member connection, gmii interface be used for gigabit Ethernet MAC layer and physics interlayer data communication, comprising 8 reception data/address bus,
8 transmission data/address bus and 1 reception clock and 1 tranmitting data register, MDIO interface are joined for realizing to ethernet physical layer
Several configurations, Ethernet interface seat use HR911130A model standard RJ-45 connector, realize ethernet physical layer managing chip
With the physical connection of transmission cable, while embedded two LED are used to indicate Ethernet connection and communications status, and device is for connecting
Network cable be necessary for support gigabit rate CAT5E UTP cable or other cables, after connection ether reticulum Link lamp it is bright representative with
Too net hardware successful connection, when having data transmission, transmission lamp flashing.
As shown in figure 5, the part the PCB wiring of gigabit Ethernet communication device is specifically designed, it is square in figure
Chip is that gigabit Ethernet physical layer management chip, chip and lower lower section Ethernet interface seat are connected by three pairs of differential signals
It connects, for suppression circuit EMI, improves anti-interference ability, while meeting high-speed communication requirement, carry out difference cabling；Chip and a left side
Upper angle fpga chip is attached by gmii interface and MDIO interface, since gmii interface is high-speed interface, 8 receptions
Data/address bus and 8 transmission data/address bus and their corresponding clock signals carry out snakelike isometric cabling.
As shown in fig. 6, test host computer includes control panel and display panel two parts, control panel is for being arranged phase
Parameter, including configured transmission and acquisition parameter two parts are answered, configured transmission is used to be arranged the IP of host computer and acquisition control device
Address and port numbers, the setting must be consistent with the parameter built in acquisition control device, and acquisition parameter then can be set each
The data bit width in channel, these parameters correspond to specific control instruction and are issued to main control unit through Ethernet transmission；Display panel
The sensing data uploaded for showing main control unit, can be shown respectively with the format of binary system and Gray code；User
Operating process is as follows: (1) acquisition parameter, including acquisition clock frequency, acquisition channel is arranged by PC control panel in user
Several and channel data bit wide etc.；(2) user starts collection process by start button, and acquisition control device is started to work, host computer
Constantly show collected data；(3) data acquisition terminates, then user stops collection process by conclusion button, collection process is stopped
Only.
Claims (4)
1. a kind of synchronous serial signal acquisition and control device based on gigabit Ethernet, it is characterised in that: the device includes SSI letter
Number acquisition device, main control unit, gigabit Ethernet communication device and host computer；
The SSI signal pickup assembly includes differential level conversion module, voltage protection module and DB-25 connection mouth seat；SSI signal
Sensor, DB-25 connection mouth seat, voltage protection module and differential level conversion module are sequentially connected；Differential level conversion module will
One group of differential clock signal of SSI signal transducer output and one group of differential data signals are respectively converted into single-ended signal and transmit
To main control unit；
The gigabit Ethernet communication device includes gigabit Ethernet physical layer management chip and Ethernet interface seat；Gigabit ether
Net physical layer management chip connects the MAC-layer interface and transmission medium interface in main control unit, to realize ethernet physical layer
Function；Ethernet interface seat connects gigabit Ethernet physical layer management chip by difference cabling, by surpassing five class network cables
Host computer is connected, while being built-in with LED light, instruction network connection and transmission state；
Nucleus module of the main control unit as signal acquisition and control device, the function for whole device is realized and timing control
System, a portion resource are connect to realize embedded gigabit Ethernet MAC layer controller by MAC-layer interface and transmission medium
The existing connection with external gigabit Ethernet physical layer management chip of cause for gossip, another part resource is to realize to SSI signal acquisition
The timing control of device, meanwhile, some resource is to realize SSI signal pickup assembly, gigabit Ethernet communication device
With the Collaborative Control of host computer, including the parsing and realization, SSI signal pickup assembly timing control mistake to PC control order
Journey and data upload the coordination of timing control process；
The host computer includes control panel and display panel two parts, and control panel is acquired for setting and configured transmission, this
A little parameters correspond to specific control instruction and are issued to main control unit through Ethernet transmission, and display panel is for showing main control unit
The sensing data of biography.
2. a kind of synchronous serial signal acquisition and control device based on gigabit Ethernet according to claim 1, feature
Be: the main control unit is based on FPGA, and chip model is the fpga chip of the SPARTAN6 series of Xilinx company
XC6SLX16FTG256, using AS configuration mode, i.e. active series arrangement mode carries out hardware configuration, configures the PROM core of use
Piece is the XCF04SVO20C chip of Xilinx company, while retaining jtag interface and being used to debug, master clock frequency 50MHz；It is main
Control unit is in standby after powering on, and starts control command until receiving the acquisition that host computer issues, then according to control
Order configuration acquisition parameter simultaneously starts acquisition control timing, and control SSI signal pickup assembly carries out signal acquisition, meanwhile, per complete
The acquisition of Cheng Yici data, main control unit start a data upload process, by gigabit Ethernet communication device to host computer
The data that this time collects are sent, once host computer issues halt instruction, main control unit stops acquisition and upload procedure, into
Enter standby mode.
3. a kind of synchronous serial signal acquisition and control device based on gigabit Ethernet according to claim 1, feature
Be: differential level conversion module uses MAX490490ESA chip, and the differential signal of input can be converted to+5V number letter
Number, voltage protection module uses 5.1V voltage-stabiliser tube；Gigabit Ethernet communication device includes gigabit Ethernet physical layer management chip
With Ethernet interface seat, gigabit Ethernet physical layer management chip uses the RTL8211EG chip of Realtek company, uses
25MHz crystal oscillator is configured to Gbit communication pattern, and MAC-layer interface selects gmii interface, and transmission medium interface selects MDIO interface,
The connection with main control unit is realized by gmii interface and MDIO interface, and gmii interface is used for gigabit Ethernet MAC layer and physics
The data communication of interlayer, MDIO interface use for realizing the configuration to ethernet physical layer parameter, Ethernet interface seat
HR911130A model standard RJ-45 connector realizes the physical connection of ethernet physical layer managing chip and network cable, simultaneously
Embedded two LED are used to indicate Ethernet connection and communications status；The power supply of all modules is all made of the power management of TI company
Chip, the input voltage of device are 12V, and main control unit is powered using individual 3.3V and 1.2V, other modules it is also required to provide
3.3V and all the way 5V power supply all the way.
4. a kind of synchronous serial signal acquisition and control device based on gigabit Ethernet according to claim 1, feature
Be: the control flow that the device uses is as follows: (1) acquisition parameter and transmission ginseng is arranged by PC control panel in user
Number, acquisition parameter include acquisition clock frequency, acquisition channel number and channel data bit wide, and configured transmission includes acquisition device and upper
IP address, the port numbers of position machine；(2) user starts collection process, and host computer issues enabled instruction and control by gigabit Ethernet
Main control unit is arrived in system instruction, and main control unit receives instruction, configures acquisition clock frequency, acquisition channel number and port number according to instruction
According to bit wide and start synchronous serial signal acquisition timing；(3) SSI signal acquisition module starts to work and transfers data to master control
Unit, main control unit encode data according to 16 systems, and real according to gigabit Ethernet is passed through after udp protocol progress package
When upload to host computer, data transmission is transmitted using parcel in the form of, and package processing and transmission process holding time are extremely short,
Therefore the real-time upload of data may be implemented；(4) host computer handles the data packet received by gigabit Ethernet, parses data
The data received are formatted and show the display surface in host computer with the format of binary system or Gray code by packet content
Plate；(5) if data acquisition terminates, user stops collection process, and host computer issues halt instruction to main control unit, acquires timing
Stop.
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| CN112130485A (en) * | 2020-08-31 | 2020-12-25 | 南京理工大学 | High-speed multi-channel synchronous acquisition device and method |
| CN114442514B (en) * | 2020-11-02 | 2024-05-14 | 芯启源(上海)半导体科技有限公司 | USB3.0/3.1 control system based on FPGA |
| CN112506832B (en) * | 2020-12-07 | 2023-03-10 | 天津津航计算技术研究所 | USB JTAG acquisition and downloading integrated device |
| CN113485183A (en) * | 2021-07-01 | 2021-10-08 | 浙江大学 | Serial signal acquisition output control device based on PCI bus protocol |
| CN115599010A (en) * | 2022-08-12 | 2023-01-13 | 北京中海技创科技发展有限公司（Cn） | Multi-channel embedded synchronous acquisition system and method thereof |
| CN115529203B (en) * | 2022-09-29 | 2023-10-20 | 深圳市必联电子有限公司 | Network communication system suitable for intelligent home routing |
| CN117939031A (en) * | 2024-03-20 | 2024-04-26 | 深圳市度申科技有限公司 | Multi-camera synchronous image acquisition card and application method thereof in image acquisition |
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| CN101957806A (en) * | 2010-09-14 | 2011-01-26 | 浙江大学 | Peripheral component interconnection standard acquisition device for synchronous serial interface signal |
| CN106850374A (en) * | 2017-02-24 | 2017-06-13 | 成都信息工程大学 | The encoder data acquisition module and method of the compatible many EPA buses of multi-protocols |
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| CN101957806A (en) * | 2010-09-14 | 2011-01-26 | 浙江大学 | Peripheral component interconnection standard acquisition device for synchronous serial interface signal |
| CN106850374A (en) * | 2017-02-24 | 2017-06-13 | 成都信息工程大学 | The encoder data acquisition module and method of the compatible many EPA buses of multi-protocols |
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