CN110245106A - The serial server of SCM Based online acquisition serial interface signal - Google Patents
The serial server of SCM Based online acquisition serial interface signal Download PDFInfo
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- CN110245106A CN110245106A CN201910547945.8A CN201910547945A CN110245106A CN 110245106 A CN110245106 A CN 110245106A CN 201910547945 A CN201910547945 A CN 201910547945A CN 110245106 A CN110245106 A CN 110245106A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
- G06F11/3041—Monitoring arrangements specially adapted to the computing system or computing system component being monitored where the computing system component is an input/output interface
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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Abstract
The invention belongs to serial communication equipment technical fields, disclose the serial server of SCM Based online acquisition serial interface signal, including SCM system A, level shifting circuit, Ports Serial Communication Ports, Ethernet interface system and power-supply system, further include: signal shift switch, analog front circuit, SCM system B and human-computer interaction module with adc circuit, the present invention, which realizes, to carry out online acquisition to serial interface signal waveform, serial ports instantaneous operating conditions are obtained, user is facilitated to configure communication system.
Description
Technical field
The invention belongs to serial communication equipment technical fields more particularly to SCM Based online acquisition serial interface to believe
Number serial server.
Background technique
Present serial server is widely used to Industry Control, instrument, instrument, multi-media network, electromechanical integration and produces
The numerous areas such as product.But since RS-232, RS-485 and RS-422 interface are easy to be former by electrostatic, lightning stroke, common mode interference etc.
Because causing communication failure even to damage equipment, and each equipment spacing from farther out, line it is more complicated.Common serial server
There is no rs 232 serial interface signal acquisition and display function, whether equipment is working properly to be difficult to judge.And each equipment spacing is from farther out, even
Line is more complicated, if equipment is out of order, faulty equipment investigation and service work are also difficult to complete.
Summary of the invention
The serial port service for being designed to provide SCM Based online acquisition serial interface signal of the embodiment of the present invention
Device can carry out online acquisition to serial interface signal waveform, obtain serial ports instantaneous operating conditions, facilitate user to communication system
It is configured.
The embodiments of the present invention are implemented as follows:
The serial server of SCM Based online acquisition serial interface signal, including SCM system A, level conversion
Circuit, Ports Serial Communication Ports, Ethernet interface system and power-supply system, power-supply system are used for the power supply of entire serial server,
Ethernet interface system passes sequentially through SCM system A, level shifting circuit and Ports Serial Communication Ports and connects, further includes: signal
Switch switch, analog front circuit, SCM system B and human-computer interaction module with adc circuit, the single-chip microcontroller with adc circuit
System B is connect with SCM system A, the display screen interface and GPIO of human-computer interaction module and the SCM system B with adc circuit
Mouth connection, the tie point connection between the input terminal and level shifting circuit and Ports Serial Communication Ports of signal shift switch are defeated
Outlet is connect by analog front circuit with the SCM system B with adc circuit, the GPIO of the SCM system B with adc circuit
Mouth is connect with the control signal input pin of signal shift switch and analog front circuit respectively, the single-chip microcontroller system with adc circuit
Unite B and SCM system A carries out data interaction, and signal shift switch is by the serial interface signal of collected Ports Serial Communication Ports
Waveform be defeated by analog front circuit carry out improve input impedance processing and amplitude conditioning, through the SCM system B with adc circuit into
Row analog-to-digital conversion is simultaneously handled the signal of acquisition, stores signal waveform data and signal output waveform data to human-computer interaction
For module for showing, human-computer interaction module is also used to receive the control instruction of user's input to the SCM system B with adc circuit
It is managed for configuration；SCM system A accesses SCM system B, reads the signal waveform data, and SCM system B is to list
Piece machine system A exports the signal waveform data.
Wherein, signal shift switch is relay or analog switch.
The serial server that the embodiment of the present invention proposes can pass through letter with the signal waveform of online real time collecting serial interface
Number waveform can quickly judge whether the equipment of current serial interface connection is working properly.It, can be with if equipment is working properly
The parameters such as its baud rate are judged by its signal waveform issued, and user is facilitated to configure communication system, this serial ports clothes
The signal waveform data of required acquisition can also be stored into a mass-memory unit according to the setting of user and be used by business device
Investigation communicates out of order time point after communication failure, to find out failure cause, and judges which data needs weight
It is new to send.
Detailed description of the invention
Fig. 1 is that the present invention is based on the serial server system block diagrams of single-chip microcontroller online acquisition serial interface signal.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Specific implementation of the invention is described in detail below in conjunction with specific embodiment:
The serial server of SCM Based online acquisition serial interface signal, including SCM system A, level conversion
Circuit, Ports Serial Communication Ports, Ethernet interface system and power-supply system, power-supply system are used for the power supply of entire serial server,
Ethernet interface system passes sequentially through SCM system A, level shifting circuit and Ports Serial Communication Ports and connects, further includes: signal
Switch switch, analog front circuit, SCM system B and human-computer interaction module with adc circuit, the single-chip microcontroller with adc circuit
System B is connect with SCM system A, the display screen interface and GPIO of human-computer interaction module and the SCM system B with adc circuit
Mouth connection, the tie point connection between the input terminal and level shifting circuit and Ports Serial Communication Ports of signal shift switch are defeated
Outlet is connect by analog front circuit with the SCM system B with adc circuit, the GPIO of the SCM system B with adc circuit
Mouth is connect with the control signal input pin of signal shift switch and analog front circuit respectively, the single-chip microcontroller system with adc circuit
Unite B and SCM system A carries out data interaction, and signal shift switch is by the serial interface signal of collected Ports Serial Communication Ports
Waveform be defeated by analog front circuit carry out improve input impedance processing and amplitude conditioning, through the SCM system B with adc circuit into
Row analog-to-digital conversion is simultaneously handled the signal of acquisition, stores signal waveform data and signal output waveform data to human-computer interaction
For module for showing, human-computer interaction module is also used to receive the control instruction of user's input to the SCM system B with adc circuit
It is managed for configuration；SCM system A accesses SCM system B, reads the signal waveform data, and SCM system B is to list
Piece machine system A exports the signal waveform data.
The present invention proposes a kind of SCM Based serial server for supporting online acquisition serial interface signal waveform,
Implementation is the circuit for increasing signal acquisition and display on the basis of common serial server.The increased circuit of institute and serial ports
Interface is connected, and such serial server is also capable of real-time acquisition the signal waveform at serial interface when working normally, and can
It shows, collected signal waveform data storage can also be arrived as desired by display screen or the network management page
It is checked in the later period in storage equipment for user.
It is increased acquisition and display circuit mainly have signal shift switch, analog front circuit, with ADC unit
Multiple functional modules such as SCM system and human-computer interaction module, these functional modules can be selected according to actual needs.Its
In each functional module function it is as follows:
(1), signal shift switch: signal shift switch is connected with serial interface, the signal for selecting to need to acquire, institute
Stating signal shift switch can be relay, analog switch etc..If the serial interface of serial server need support electrically every
From then the signal shift switch circuit also includes linear signal isolator part, such as linear optical coupling device etc..
(2), analog front circuit: the analog front circuit is connected with signal shift switch, for improving signal acquisition
The input impedance of circuit reduces influence of the signal acquisition circuit to collected signal, and in the control of user or SCM system
It is input to adc circuit after being improved collected signal under system and carries out analog-to-digital conversion.
(3), the SCM system with ADC unit: the SCM system with ADC unit controls signal switching and opens
It closes, the work of analog front circuit, receives the signal of analog front circuit output, and be converted into digital signal, reconvert
For signal waveform data, shown by display screen or the network management page.The SCM system with ADC unit
Inside includes massive store chip, can will be carried out in collected signal waveform data storage to storage equipment for user's later period
It checks；Optionally, the SCM system with ADC unit has the GPIO interface for receiving user control signal；Optionally,
The SCM system with ADC unit also has display screen interface.
(4), human-computer interaction module: human-computer interaction module mainly includes display screen, key, knob and LED light etc..
Display screen is used for display system menu and collected signal waveform；It is current that LED light may be used to indicate serial server
Working condition；Key and knob are then used to receive the control instruction of user's input.Display screen that human-computer interaction module is included is pressed
The components such as key, knob and LED light are all that optionally, can be configured according to the demand of user.
In addition to this, serial server proposed by the present invention further includes functional module possessed by common serial ports, i.e. ether
The modules such as network interface system, SCM system, level shifting circuit, serial interface and power-supply system.
The specific implementation of the serial server proposed by the present invention for supporting online acquisition serial interface signal, it is main
It consists of the following components:
1, SCM system A
SCM system A has at least 1 tunnel UART interface, and main function is will to receive from level shifting circuit
The packing of UART data is packaged into ethernet data frame and is sent to Ethernet interface system, and the packet that Ethernet system is sended over
The UART signal that the ethernet data frame of the data containing UART changes into Transistor-Transistor Logic level is sent to level shifting circuit.If serial port service
Device serial interface standard is two-wire system RS485, then SCM system 1 also needs to provide the side for receiving data and transmission data RS-485
To control signal.
SCM system A is connected with Ethernet interface system 4, level shifting circuit 2 and SCM system B.
2, level shifting circuit 2
Level shifting circuit 2 be used for by SCM system 1 export Transistor-Transistor Logic level UART signal be converted to RS-232 (or
RS-485, RS-422) level the rs 232 serial interface signal RS-232 that is exported again to serial interface 3, and will be received from serial interface 3
The UART signal that the rs 232 serial interface signal of (or RS-485, RS-422) level switchs to Transistor-Transistor Logic level is exported to SCM system 1；If
When serial interface signal is 2 line RS485 signal, level shifting circuit 2 further includes that RS485 receives data and sends the side of data
To control circuit.If serial ports supports isolation, level shifting circuit 2 further includes the letter of optocoupler or magnetic coupling device etc
Number isolating device.
2 one end of level shifting circuit is connected with Chip Microcomputer A, and the other end is connected with serial interface 3.
3, serial interface 3
Serial interface 3 is the external serial interface of serial server.Serial interface 3 is connected with level switch module, connects
Mouth is typically in the form of plug-in type connection terminal or DB9 terminal or RJ45 socket etc., the signal of interface can be RS-232,
RS-485 RS-422 signal.
4, Ethernet interface system 4
The function of Ethernet interface system 4 is to realize the interconnection of SCM system A and Ethernet.General SCM system A
As soon as an ethernet mac unit can be integrated, an Ethernet switching chip or ethernet PHY and its peripheral circuit are needed at this time
And corresponding ethernet interface circuit (such as network transformer, RJ45 interface or optical module) completes SCM system A
With the interconnection of Ethernet.Not only have ethernet mac unit inside some single-chip microcontrollers, be also integrated with ethernet PHY unit, at this time with
Too network interface system 4 only needs ethernet interface circuit (such as network transformer, RJ45 interface or optical module).
5, signal shift switch 5
Signal shift switch 5 is connected with serial interface 3, needs the signal acquired to be input to analog front circuit for selecting
6.But signal shift switch 5 can not be used under some scenes, for example serial server only one two-wire system RS-485 believes
Number serial ports when because the signal that need to be acquired at most only there are two, the signal that need to be acquired can be directly connected to the mould in two channels
Intend front-end circuit without using signal shift switch.Signal shift switch 5 can be relay, analog switch etc..If
The serial ports of serial server needs support electrical isolation, then 5 circuit of signal shift switch also includes linear signal isolator
Part, such as linear optical coupling device etc..
The signal output end of signal shift switch 5 is connected with the input terminal of analog front circuit 6；Signal shift switch 5
Signal input part is connected with serial interface 3；The control signal input pin of signal shift switch 5 is connected simultaneously with SCM system B
By the control of SCM system B.
6, analog front circuit 6
First effect of analog front circuit 6 is to improve signal input impedance, to reduce the access of analog front circuit 6
Influence to collected signal；Second effect is improved collected signal, and the variation of collected signal is adjusted to
The ADC unit that SCM system B is output to after suitable amplitude carries out analog-to-digital conversion, to improve the precision of signal acquisition；Third
A effect zooms in or out collect signal amplitude after that signal is exported the ADC unit to SCM system B again is defeated to improve
Enter the collectable range of signal.
The signal input part of analog front circuit 6 is connected with signal shift switch 5；The signal of analog front circuit 6 exports
End is connected with the ADC input pin of SCM system B；The control signal input pin and SCM system B of analog front circuit 6
It is connected and by the control of SCM system B.
7, SCM system B
It include ADC unit inside SCM system B.The input pin of ADC unit inside SCM system B and simulation
Front-end circuit is connected；SCM system B also passes through GPIO pin and is connected with signal shift switch, analog front circuit.Single-chip microcontroller
System B controls the work of signal shift switch, analog front circuit, receives the signal of analog front circuit output, and by its
Digital signal is converted to, signal waveform data is reconverted into, is shown by display screen or the network management page.Single-chip microcontroller
System B also needs to receive the control instruction of user while change data, and switching needs the signal acquired, control AFE(analog front end) electricity
The gain on road.Optionally, SCM system B includes the storage equipment of large capacity, can be by collected signal waveform data
It stores and is checked for user；Optionally, SCM system B also has display screen interface, can be signal waveform data aobvious
It directly displays out in display screen；In addition to display screen and storage equipment, SCM system B there are also some GPIO pins be connected to key,
Knob, user can be instructed by these keys, knob input control.
SCM system B is connected with SCM system A, and user can access SCM system B by Ethernet interface, looks into
See the collected signal waveform of SCM system B.
Two SCM systems of SCM system A and SCM system B have been used to complete different function simultaneously in system
Can, this is because most single-chip microcontroller pin numbers are less, multiple functions are needed using the same pin.It will lead to only make in this way
It can not achieve repertoire with a single-chip microcontroller.But in the serial interface number needed for user's required function is fairly simple or user
It is less, function needed for can be achieved with client using a single-chip microcontroller.For example user does not need display screen and 1 tunnel is only needed to go here and there
Select 1 STM32F107 series monolithic can when mouth interface.
8, human-computer interaction module 8
Human-computer interaction module 8 is mainly comprising display screen, key, knob and LED light etc..Display screen is for showing system
System menu and collected signal waveform；LED light may be used to indicate the current working condition of serial server；Key and rotation
Button is then used to receive the control instruction of user's input.Display screen, key, knob and the LED indication that human-computer interaction module 8 is included
The components such as lamp are all that optionally, can be configured according to the demand of user.
Human-computer interaction module 8 is connected by display screen interface, the forms such as GPIO mouthfuls with SCM system B.
9, power-supply system 9
Power-supply system 9 is used to for the power supply of external world's input being converted into after the different low-tension supply of multichannel as this serial server
Internal each circuit module power supply.
In conclusion serial server proposed by the invention can complete Ethernet data and the mutual of serial data turns
It changes, while can also acquire and show the signal waveform at serial interface.But the realization side of serial server proposed by the invention
Case is not limited only to this, can also there is other schemes and specific connection type.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to restrict the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (2)
1. the serial server of SCM Based online acquisition serial interface signal, including SCM system A, level conversion electricity
Road, Ports Serial Communication Ports, Ethernet interface system and power-supply system, power-supply system are used for the power supply of entire serial server, with
Too network interface system passes sequentially through SCM system A, level shifting circuit and Ports Serial Communication Ports and connects, which is characterized in that also
It include: signal shift switch, analog front circuit, SCM system B and human-computer interaction module with adc circuit, band adc circuit
SCM system B connect with SCM system A, the display screen of human-computer interaction module and the SCM system B with adc circuit connects
Mouth and GPIO mouthfuls of connections, the tie point between the input terminal and level shifting circuit and Ports Serial Communication Ports of signal shift switch connect
It connects, output end is connect by analog front circuit with the SCM system B with adc circuit, the SCM system with adc circuit
The GPIO mouth of B is connect with the control signal input pin of signal shift switch and analog front circuit respectively, the list with adc circuit
Piece machine system B and SCM system A carries out data interaction, and signal shift switch connects the serial ports of collected Ports Serial Communication Ports
Mouth signal waveform is defeated by analog front circuit and carries out improving input impedance processing and amplitude conditioning, through the single-chip microcontroller with adc circuit
System B carries out analog-to-digital conversion and handles the signal of acquisition, and storage signal waveform data simultaneously give by signal output waveform data
For human-computer interaction module for showing, human-computer interaction module is also used to receive the control instruction of user's input to the list with adc circuit
Piece machine system B is managed for configuration；SCM system A accesses SCM system B, reads the signal waveform data, single-chip microcontroller
System B exports the signal waveform data to SCM system A.
2. the serial server of SCM Based online acquisition serial interface signal according to claim 1, feature
Be: signal shift switch is relay or analog switch.
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| CN115755727A (en) * | 2022-12-07 | 2023-03-07 | 西安超越申泰信息科技有限公司 | Server management method, device, equipment and medium based on domestic single-chip microcomputer |
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