CN104953800B - A kind of driving and communication signal processing method based on same physical circuit - Google Patents
A kind of driving and communication signal processing method based on same physical circuit Download PDFInfo
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- CN104953800B CN104953800B CN201510345426.5A CN201510345426A CN104953800B CN 104953800 B CN104953800 B CN 104953800B CN 201510345426 A CN201510345426 A CN 201510345426A CN 104953800 B CN104953800 B CN 104953800B
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Abstract
A kind of driving and communication signal processing method based on same physical circuit.The method of the present invention causes multi-cascade Complex Power electronics transformation system in parallel to realize the transmission and parsing of drive signal and communication signal line by a physical cord, and the system includes long-range control host machine, multiple drive control devices and multiple power devices corresponding with drive control device.The long-range control host machine passed under signal wire 1,2 ... N connect respectively local drive control device 1,2 ... N, its transmit signal respectively comprising activation bit 1, the communication information 1 ... activation bit N, communication information N.By the activation bit 1,2 ... N and communication information 1,2 ... N by the ON time of low and high level and low and high level encode on main frame, is then decoded in local drive control device, the activation bit and communication information are separated.The present invention has advantages below：1st, system communication cabling is substantially reduced, it is cost-effective；2nd, implementation is simple, effective.
Description
Technical field
The present invention relates to a kind of method of signal transacting, more particularly to a kind of drive signal and communication signal are simultaneously at one
The method transmitted and parsed in physical signal lines.
Background technology
With the fast development of economy, China is EHV transmission, flexible DC power transmission, high ferro etc. be high-power, high voltage
Dynamics of investment be gradually increased so that Power Electronic Technique towards high-power, high voltage it is in parallel develop with application of the manystage cascade connection direction and
Break through.
For multi-parallel multi-cascade Complex Power electronics transformation system, a long-range control host machine and multiple local drives are included
Dynamic control unit.Main frame needs that drive signal is issued into local drive control unit by transmission line, is then controlled by driving
Unit processed is strengthened weak signal, is applied in power electronic devices, completes high-power electric and electronic conversion.
If main frame needs to complete to need to increase in addition during intelligent scheduling to drive control unit by some information transmissions
Connection is completed to pass function under communication information.But for multi-parallel multi-cascade Complex Power electronics transformation system, main frame connection is more
Individual drive control unit, increased connection make whole system difficult wiring, difficulty of construction increase, cost increase the shortcomings that.
The present invention completes activation bit simultaneously using the drive signal line between existing main frame and each drive control unit
With communication information simultaneously transmit function, solve due to connection it is more the drawbacks of, make whole system it is more intelligent, scheduling it is more square
Just.
The content of the invention
Present invention solves the technical problem that it is：Build a kind of activation bit and communication information based on same physical signal lines
The method transmitted and parsed, to overcome the excessive disadvantage of multi-parallel multi-cascade Complex Power electronics transformation system increase connection cabling
End.
The present invention realizes especially by following technical scheme：
A kind of driving and communication signal processing method based on same physical circuit, applied to the complicated electricity of multi-parallel multi-cascade
Power electronics transformation system, the system include long-range control host machine, multiple local drive control devices and with drive control device pair
The multiple power devices answered；The long-range control host machine passed under signal wire 1,2 ... N connects local drive control device respectively
1st, 2 ... N, its signal transmitted is respectively comprising activation bit 1, the communication information 1 ... activation bit N, communication information N；The side
Method by the activation bit 1,2 ... N and communication information 1,2 ... N passes through the conducting of low and high level and low and high level on main frame
Time encode, and is then decoded in local drive control device, the activation bit and communication information are separated.
Enter a ground, the activation bit 1,2 ... N contents include the duty that the main frame is assigned to local drive control device
Than, and local drive control device 1,2 ... on N carry out power amplification after, to power device 1,2 ... N is driven, complete electricity
Power electronics converts.
Enter a ground, the communication information 1,2 ... N contents, which include main frame, needs the sampling letter of local drive control device feedback
Cease the relevant informations such as list, the whole information of dutycycle fine delay, communication mode change；The local drive control device passes through upload
Signal wire 1,2 ... N is connected to main frame, and it is uploaded to the voltage x current sampling of the content of main frame including power device, dutycycle is prolonged
When, actual power device service time and mistake, warning message.
Further, it is as follows to pass signal generation process when dutycycle output is high level, under the main frame：Main frame is sent
The high level lasting time of biography signal down be more than time delay Tdelay, now drive signal is open-minded；Then when one fixed
Between T, main frame hair low level, the low duration is Tpulse, Tpulse<Tdelay；When low duration is more than Tdelay,
Now driving is closed.
Further, when dutycycle output is high level, local drive control device resolving is as follows：When detecting master
The rising edge for passing signal down that machine is sent, and high level lasting time is more than Tdelay, then local drive control send high level, open
Lead to corresponding power device；When detecting down biography signal trailing edge again, and low level time is maintained for more than Tpulse, then it is assumed that
It is communication signal logical one, if high level, which is held time, reaches time T, then it is assumed that be communication signal logical zero；Work as low level
Hold time more than Tdelay, then it is assumed that main frame hair closes the instruction of drive signal, and local drive control closes corresponding power device.
Further, it is as follows to pass signal generation process when dutycycle output is low level, under main frame：Main frame is sent down
Pass signal low duration and be more than time delay Tdelay, now drive signal closing；Then every a set time T,
Main frame sends out high level, and the high level lasting time is Tpulse, Tpulse<Tdelay；When high level lasting time is more than Tdelay, now
Drive open-minded.
Further, when dutycycle output is low level, local drive control device resolving is as follows：When detecting master
During the low level trailing edge for passing signal down that machine is sent, low duration is more than Tdelay, then drive signal send low level,
Close corresponding power device；When detecting down biography signal rising edge again, and high level time is maintained for more than Tpulse, then recognize
To be communication signal logical one, if low level, which is held time, reaches time T, then it is assumed that be communication signal logical zero；Work as detection
Held time to rising edge and high level more than Tdelay, then it is assumed that main frame sends out the instruction for opening drive signal, opens corresponding power
Device.
Further, the delay time TdelayBased on the duty cycle signals of confidential transmission and accounting for for local drive control device
The empty delay than signal, the signal less than the pulse width can be filtered out.
Further, the TpulseIt is set as 1/4 ~ 1/2 Tdelay。
Brief description of the drawings
Fig. 1 is converted based on the multi-parallel multi-cascade Complex Power electronics of same physical circuit transmission driving and communication signal
System schematic；
Fig. 2 is drive signal waveform figure；
Fig. 3 is driving and communication signal transmission, parsing schematic diagram when dutycycle output is high level；
Fig. 4 is driving and communication signal transmission, parsing schematic diagram when dutycycle output is low level.
Embodiment
The present invention is further described for explanation and embodiment below in conjunction with the accompanying drawings.
The present invention constructs a kind of multi-parallel multi-cascade Complex Power electronics transformation system, as shown in Figure 1, the system bag
Include long-range control host machine, multiple drive control devices and multiple power devices corresponding with drive control device.The remote control
Main frame passed under signal wire 1,2 ... N connect respectively local drive control device 1,2 ... N, its transmit signal respectively comprising drive
Dynamic information 1, the communication information 1 ... activation bit N, communication information N.By the activation bit 1,2 ... N and communication information 1,2 ...
N by the ON time of low and high level and low and high level encode on main frame, is then carried out in local drive control device
Decoding, the activation bit and communication information are separated.
The activation bit 1,2 ... N contents include console controller and are assigned to the dutycycle of local drive control device, and
Local drive control device 1,2 ... on N carry out power amplification after, to power device 1,2 ... N is driven, complete electric power electricity
Son conversion.The communication information 1,2 ... N contents, which include main frame, to be needed the sample information list of local drive control device feedback, accounts for
The relevant informations such as empty information more whole than fine delay, communication mode change；The local drive control device by up-delivering signal line 1,
2nd ... N is connected to main frame, and it, which is uploaded to the content of main frame, includes the voltage x current sampling, dutycycle delay, reality of power device
Power device service time and mistake, warning message.The driving and the coding and sheet in long-range control host machine of communication signal
The decoding process of ground drive control device has two ways with the high level and low level of dutycycle.
It is as follows that signal creating method is passed when dutycycle output is high level, under long-range control host machine：Main frame is sent down
Pass signal high level lasting time and be more than time delay Tdelay, now drive signal is open-minded.Confidential biography based on the delay time
The dutycycle passed（PWM）Information and the delay of the duty cycle signals of local drive control device, as shown in Figure 2.During the delay
Between added for drive control device, between generally 300 ~ 500ns, the signal less than the pulse width can be filtered out.Then every
One set time T, long-range control host machine hair low level, the low duration is Tpulse, Tpulse<Tdelay, can by this when
Between be set as 1/4 ~ 1/2 Tdelay.It is more than T when driving low durationdelay, now move signal-off.
When dutycycle output is high level, local drive control device analytic method is as follows：When detecting what main frame was sent
The lower rising edge for passing signal, and high level lasting time is more than Tdelay, then the drive signal of local drive control send high level,
Open corresponding power device.When detecting down biography signal trailing edge again, and low level time is maintained for more than Tpulse, then recognize
To be communication signal logical one, if high level, which is held time, reaches time T, then it is assumed that be communication signal logical zero.When low electricity
It is flat to hold time more than Tdelay, then it is assumed that main frame hair closes the instruction of drive signal, closes corresponding power device.
It is as follows that signal creating method is passed when dutycycle output is low level, under main frame：The biography signal down that main frame is sent is low
Level duration is more than time delay Tdelay, now drive signal closing.As shown in Figure 3.Then every a set time
T, high level is sent out, the high level lasting time is Tpulse.When drive signal is opened again, high level lasting time is more than
Tdelay, now drive open-minded.
When dutycycle output is low level, local drive control device analytic method is as follows：When detecting what main frame was sent
During the low level trailing edge of lower biography signal, low duration is more than Tdelay, then drive signal send low level, close corresponding
Power device.When detecting down biography signal rising edge again, and high level time is maintained for more than Tpulse, then it is assumed that it is communication
Signal logic " 1 ", if low level, which is held time, reaches time T, then it is assumed that be communication signal logical zero.When detecting rising edge
And high level is held time more than Tdelay, then it is assumed that main frame sends out the instruction for opening drive signal, opens corresponding power device.
By with upper type can multi-cascade Complex Power electronics transformation system in parallel pass through a physical cord reality
Existing drive signal and the transmission and parsing of communication signal line, it has advantages below：
1st, system communication cabling is substantially reduced, it is cost-effective；
2nd, implementation is simple, effective.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (7)
1. a kind of driving and communication signal processing method based on same physical circuit, applied to multi-parallel multi-cascade Complex Power
Electronics transformation system, the system include long-range control host machine, multiple local drive control devices and corresponding with drive control device
Multiple power devices；The long-range control host machine passed under signal wire 1,2 ... N connect respectively local drive control device 1,
2nd ... N, its signal transmitted is respectively comprising activation bit 1, communication information 1 ... activation bit N, communication information N；Methods described
By the activation bit 1,2 ... N and communication information 1,2 ... N is when on main frame by the conducting of low and high level and low and high level
Between encoded, then decoded in local drive control device, the activation bit and communication information separated；The driving
Information 1,2 ... N contents include the main frame and are assigned to the dutycycle of local drive control device, and local drive control device 1,
2nd ... on N carry out power amplification after, to power device 1,2 ... N is driven, complete Technics of Power Electronic Conversion；When dutycycle exports
For high level when, it is as follows to pass signal generation process under the main frame：The high level lasting time of biography signal down that main frame is sent is more than
Time delay Tdelay, now drive signal is open-minded；Then continue every a set time T, main frame hair low level, the low level
Time is Tpulse, Tpulse<Tdelay；When low duration is more than Tdelay, now drive signal closing.
2. signal processing method according to claim 1, it is characterised in that：The communication information 1,2 ... N contents include
Main frame needs sample information list, the whole information of dutycycle fine delay, the communication mode change of local drive control device feedback to believe
Breath；The local drive control device by up-delivering signal line 1,2 ... N is connected to main frame, and it, which is uploaded to the content of main frame, includes work(
The voltage x current sampling of rate device, dutycycle delay, actual power device service time and mistake, warning message.
3. signal processing method according to claim 1, it is characterised in that：It is local when dutycycle output is high level
Drive control device resolving is as follows：When detecting that what main frame sent pass down the rising edge of signal, and high level lasting time is big
In Tdelay, then local drive control send high level, open corresponding power device；Signal trailing edge is passed when detecting down again
When, and low level time is maintained for more than Tpulse, then it is assumed that it is communication signal logical one, if high level, which is held time, reaches the time
T, then it is assumed that be communication signal logical zero；When detecting trailing edge and low level is held time more than Tdelay, then it is assumed that main frame is sent out
The instruction of drive signal is closed, local drive control closes corresponding power device.
4. signal processing method according to claim 1, it is characterised in that：When dutycycle output is low level, main frame
Lower biography signal generation process is as follows：The low duration of biography signal down that main frame is sent is more than time delay Tdelay, now drive
Dynamic signal-off；Then every a set time T, main frame hair high level, the high level lasting time is Tpulse, Tpulse<
Tdelay；When high level lasting time is more than Tdelay, now drive signal is open-minded.
5. signal processing method according to claim 1, it is characterised in that：It is local when dutycycle output is low level
Drive control device resolving is as follows：When detecting that what main frame sent pass down the low level trailing edge of signal, and low level continues
Time is more than Tdelay, then local drive control send low level, close corresponding power device；Signal is passed when detecting down again
During rising edge, and high level time is maintained for more than Tpulse, then it is assumed that it is communication signal logical one, is reached if low level is held time
To time T, then it is assumed that be communication signal logical zero；When detecting rising edge and high level is held time more than Tdelay, then it is assumed that
Main frame sends out the instruction for opening drive signal, opens corresponding power device.
6. according to the signal processing method described in claim any one of 1-5, it is characterised in that：The time delay TdelayBased on
The delay of the duty cycle signals of confidential transmission and the duty cycle signals of local drive control device, pulse width are less than the time delay
Signal can be filtered out.
7. according to the signal processing method described in claim any one of 1-5, it is characterised in that：The TpulseIt is set as 1/4~
1/2Tdelay。
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| CN101156308A (en) * | 2005-04-01 | 2008-04-02 | Abb技术有限公司 | Electric power converter |
| CN101478225A (en) * | 2008-12-19 | 2009-07-08 | 中国电力科学研究院 | Communication method by using series connection valve triggering signal of high voltage electric and electronic device |
| US7982640B2 (en) * | 2008-09-30 | 2011-07-19 | Tdk Corporation | Digital signal transmitting apparatus and digital signal transmitting method |
| CN103427842A (en) * | 2013-08-07 | 2013-12-04 | 上海交通大学 | Coding and decoding method and coding and decoding device for high-precision time transfer |
| CN103997327A (en) * | 2014-05-19 | 2014-08-20 | 华为技术有限公司 | Wave losing detection circuit of drive signals and switching tube drive circuit |
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2015
- 2015-06-19 CN CN201510345426.5A patent/CN104953800B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101156308A (en) * | 2005-04-01 | 2008-04-02 | Abb技术有限公司 | Electric power converter |
| US7982640B2 (en) * | 2008-09-30 | 2011-07-19 | Tdk Corporation | Digital signal transmitting apparatus and digital signal transmitting method |
| CN101478225A (en) * | 2008-12-19 | 2009-07-08 | 中国电力科学研究院 | Communication method by using series connection valve triggering signal of high voltage electric and electronic device |
| CN103427842A (en) * | 2013-08-07 | 2013-12-04 | 上海交通大学 | Coding and decoding method and coding and decoding device for high-precision time transfer |
| CN103997327A (en) * | 2014-05-19 | 2014-08-20 | 华为技术有限公司 | Wave losing detection circuit of drive signals and switching tube drive circuit |
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