CN113359550B - FSK data monitoring equipment based on FPGA - Google Patents
FSK data monitoring equipment based on FPGA Download PDFInfo
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- CN113359550B CN113359550B CN202110616064.4A CN202110616064A CN113359550B CN 113359550 B CN113359550 B CN 113359550B CN 202110616064 A CN202110616064 A CN 202110616064A CN 113359550 B CN113359550 B CN 113359550B
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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
- G05B19/0428—Safety, monitoring
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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
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Automation & Control Theory (AREA)
- Optical Communication System (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
The invention relates to the technical field of FSK data monitoring, in particular to FSK data monitoring equipment based on an FPGA; the system comprises a plurality of acquisition modules, a control optocoupler isolation module, a control magnetic coupler isolation module and a main control chip, wherein the acquisition modules are connected with a serial port control end of the main control chip through the control optocoupler isolation module and the control magnetic coupler isolation module, the main control chip is also connected with an Ethernet, an LCD, a key, a USB port and a TF port, the optocoupler takes an optical signal as a medium to realize coupling and transmission of an electric signal, and input and output are completely isolated electrically, so that the system has the characteristic of strong anti-interference performance.
Description
Technical Field
The invention relates to the technical field of FSK data monitoring, in particular to FSK data monitoring equipment based on an FPGA.
Background
FSK (Frequency-shift keying) is one modulation scheme that has been used earlier in information transmission. The method is widely applied to data transmission of traffic systems such as subways and the like. Existing monitoring devices typically directly read the data content in the transmission for analysis to discern whether the FSK data transmission is normal. The defects are that: 1, the data in transmission needs to be modulated and demodulated, and the efficiency is low; 2, due to the fact that the original transmission network or the original transmission line is overlapped, current fluctuation of the monitoring equipment is likely to interfere with FSK data transmission in real time.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides FSK data monitoring equipment.
The technical scheme of the invention is as follows:
FSK data monitoring equipment based on FPGA, its characterized in that: the system comprises a plurality of acquisition modules, a control optocoupler isolation module, a control magnetic coupler isolation module and a main control chip, wherein the acquisition modules are connected with a serial port control end of the main control chip through the control optocoupler isolation module and the control magnetic coupler isolation module, the main control chip is also connected with an Ethernet, an LCD, a key, a USB port and a TF port, the optocoupler takes an optical signal as a medium to realize coupling and transmission of an electric signal, and input and output are completely isolated electrically, so that the system has the characteristic of strong anti-interference performance.
Further, the FSK data monitoring device based on the FPGA further comprises a converter for converting alternating current 220 volts into direct current 5 volts, the converter is used for supplying power to the main control chip, and the converter for converting alternating current 220 volts into direct current 12 volts is used for supplying power to the acquisition module.
Further, the main control chip comprises a signal pre-stage processing module for receiving signals, an analog-to-digital converter, a data analysis and processing module and an MCU chip;
the data analysis and processing module comprises a gain control module, a variable frequency division module, a waveform data storage control module, a waveform display control module, a frequency measurement module, a keyboard scanning module and a display driving module;
the simulation oscillography flow of the main control chip is as follows:
the acquisition module acquires analog signals of the FSK equipment (namely, voltage and frequency of a communication line are detected by accessing a CTF (computer-induced wave) line, the analog signals are led into the signal pre-stage processing module, the analog signals are converted into digital signals which can be identified by a computer through an analog-to-digital converter, the digital signals are led into the waveform data storage control module, the waveform data storage control module leads the calculated data into the waveform display control module through RAMA or RAMB, and then the waveform data are restored in the analog oscilloscope through line scanning and column scanning;
the signal pre-stage processing module is used for guiding the analog signals into the frequency measuring module in two ways, the analog signals can be displayed in a 128 x 64 lattice by using display driving, a decision maker is connected with the keyboard scanning module through a keyboard, and the keyboard scanning module controls the MCU chip so as to control the waveform data storage control module by using the gain control module and the variable frequency dividing module.
Further, the analog-to-digital converter adopts an AD9220.
The beneficial effects of the invention are as follows: the voltage and the frequency of a communication line are detected through a virtual oscilloscope detection mechanism, namely by accessing a CTF (computer-to-fiber) line distribution board, a continuous waveform diagram is calculated and restored by using an ADC (analog to digital converter), an MCU (micro control unit) and an FPGA (field programmable gate array), the signal quality is evaluated through the voltage peak value and the frequency to ensure the safety of control signals, the condition that the faults of detection equipment influence the normal state of signal equipment is avoided, and the signals are isolated through a voltage transformer PT. The locomotive signal is filtered through a filter, then the FSK signal is detected, and the FSK signal is processed through a DSP single chip microcomputer device. Virtual oscilloscopes are applications that utilize high-performance modular hardware, in combination with efficient and flexible software, to accomplish various tests, measurements, and automation.
Drawings
FIG. 1 is a schematic diagram of the present invention;
fig. 2 is a schematic diagram of the control and processing principle of the main control chip.
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
as shown in fig. 1 and 2, the FSK data monitoring apparatus is characterized in that: the system comprises a plurality of acquisition modules, a control optocoupler isolation module, a control magnetic coupler isolation module and a main control chip, wherein the acquisition modules are connected with a serial port control end of the main control chip through the control optocoupler isolation module and the control magnetic coupler isolation module, the main control chip is also connected with an Ethernet, an LCD, a key, a USB port and a TF port, the optocoupler takes an optical signal as a medium to realize coupling and transmission of an electric signal, and input and output are completely isolated electrically, so that the system has the characteristic of strong anti-interference performance.
The FSK data monitoring device further comprises a converter for converting alternating current 220 volts into direct current 5 volts, the converter is used for supplying power to the main control chip, and the converter for converting alternating current 220 volts into direct current 12 volts is used for supplying power to the acquisition module.
The main control chip comprises a signal pre-stage processing module for receiving signals, an analog-to-digital converter, a data analysis and processing module and an MCU chip;
the data analysis and processing module comprises a gain control module, a variable frequency division module, a waveform data storage control module, a waveform display control module, a frequency measurement module, a keyboard scanning module and a display driving module;
the simulation oscillography flow of the main control chip is as follows:
the acquisition module acquires analog signals of the FSK equipment (namely, voltage and frequency of a communication line are detected by accessing a CTF (computer-induced wave) line, the analog signals are led into the signal pre-stage processing module, the analog signals are converted into digital signals which can be identified by a computer through an analog-to-digital converter, the digital signals are led into the waveform data storage control module, the waveform data storage control module leads the calculated data into the waveform display control module through RAMA or RAMB, and then the waveform data are restored in the analog oscilloscope through line scanning and column scanning;
the signal pre-stage processing module is used for guiding the analog signals into the frequency measuring module in two ways, the analog signals can be displayed in a 128 x 64 lattice by using display driving, a decision maker is connected with the keyboard scanning module through a keyboard, and the keyboard scanning module controls the MCU chip so as to control the waveform data storage control module by using the gain control module and the variable frequency dividing module.
The analog-to-digital converter adopts AD9220.
The FSK signal collector utilizes high-performance modularized hardware and combines high-efficiency flexible software to complete various testing, measuring and automation applications. The system mainly comprises three parts, namely signal acquisition and control, data analysis and processing and measurement result display.
The signal acquisition and control is a hardware platform formed by a computer and instrument hardware, so that the acquisition, measurement, conversion and control of signals are realized;
the data analysis and processing are represented by the FSK signal collector which fully utilizes the storage and operation functions of a computer and realizes the analysis and processing of input data signals through software;
the FSK signal collector displays the measurement result by using the computer resources such as display, memory, etc., and the measurement result is expressed and output in various modes, and the computer can also be used for data transmission and utilization.
The main difference between the FSK signal collector and the traditional oscilloscope is the display result part. The project can utilize a singlechip, a high-speed ADC chip and an FPGA to realize sampling and analysis of FSK waveforms, and then the FSK waveforms are uploaded to a cloud platform. And a section of sample can be sampled and uploaded to the cloud end to reproduce the curve and serve as an original record.
The components and related parameters employed in this embodiment:
1. description of the parts
a) The system main control adopts MIPS architecture network processor, embedded operating system, 4 inch full-color LCD screen
b) Device interface: button, 4 cun LCD screen, AC input, 32 way BNC input terminal, WIFI antenna, RJ45
c) The device can detect 32 paths of FSK signals simultaneously
d) Each channel outputs the frequency, the Vpp, the Vrsm and a plurality of sections of periodic waveform data at fixed time, and the 32-channel polling period is less than 1S.
e) The liquid crystal screen displays 32 paths of local real-time acquired data, one path of data can be selected to view waveforms, and the number of the waveforms is more than 6
f) Supporting MODBUSTCP protocol
g) Firmware online upgrade, local area network BS architecture background management, WIFI support routing and AP mode
h) 2U frame type metal chassis, high temperature active heat radiation
2. Electrical parameters
a) 100-250V AC input, overall power consumption 40W
b) 10M/100M self-adaptive network card
c) Support dual antenna 150MWIFI
d) 17-path complete isolation power supply system
e) FSK acquisition parameters
The foregoing embodiments and description have been provided merely to illustrate the principles and best modes of carrying out the invention, and various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (2)
1. FSK data monitoring equipment based on FPGA, its characterized in that: the system comprises a plurality of acquisition modules, a control optocoupler isolation module, a control magnetic coupler isolation module and a main control chip, wherein the acquisition modules are connected with a serial port control end of the main control chip through the control optocoupler isolation module and the control magnetic coupler isolation module, and the main control chip is also connected with an Ethernet, an LCD, a key, a USB port and a TF port; the FSK data monitoring equipment also comprises a converter for converting alternating current 220 volts into direct current 5 volts, which is used for supplying power to the main control chip, and a converter for converting alternating current 220 volts into direct current 12 volts, which is used for supplying power to the acquisition module; the main control chip comprises a signal pre-stage processing module for receiving signals, an analog-to-digital converter, a data analysis and processing module and an MCU chip; the data analysis and processing module comprises a gain control module, a variable frequency division module, a waveform data storage control module, a waveform display control module, a frequency measurement module, a keyboard scanning module and a display driving module; the simulation oscillography flow of the main control chip is as follows: the acquisition module acquires analog signals of the FSK equipment, the analog signals are led into the signal pre-stage processing module, the analog signals are converted into digital signals which can be identified by a computer through the analog-to-digital converter, the digital signals are led into the waveform data storage control module, the waveform data storage control module leads the calculated data into the waveform display control module through RAMA or RAMB, and then the waveform data are restored in the analog oscilloscope through line scanning and column scanning; the signal pre-stage processing module is used for guiding the analog signals into the frequency measuring module in two ways, the analog signals can be displayed in a 128 x 64 lattice by using display driving, a decision maker is connected with the keyboard scanning module through a keyboard, and the keyboard scanning module controls the MCU chip so as to control the waveform data storage control module by using the gain control module and the variable frequency dividing module.
2. The FPGA-based FSK data monitoring apparatus of claim 1, wherein: the analog-to-digital converter adopts AD9220.
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| CN113359550B true CN113359550B (en) | 2023-08-29 |
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