CN104953800A - Driving and communication signal processing method based on same physical line - Google Patents
Driving and communication signal processing method based on same physical line Download PDFInfo
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- CN104953800A CN104953800A CN201510345426.5A CN201510345426A CN104953800A CN 104953800 A CN104953800 A CN 104953800A CN 201510345426 A CN201510345426 A CN 201510345426A CN 104953800 A CN104953800 A CN 104953800A
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Abstract
The invention relates to a driving and communication signal processing method based on a same physical line. According to the method, driving signal and communication signal lines are transferred and resolved through a physical line by a parallel multistage complex power electronic transformation system; the system comprises a remote control host, a plurality of driving controllers and a plurality of power devices corresponding to the driving controllers; the remote control host is respectively connected with local driving controllers 1, 2, ...N through downloading signal lines 1, 2, ...N, and transferred signals respectively include driving information 1, communication information 1, ...driving information N and communication information N; the driving information 1, 2, ...N and the communication information 1, 2, ...N are coded on the host through high-low level and conducting time of the high-low level and then are decoded on the local driving controllers, so as to separate the driving information and the communication information. The driving and communication signal processing method has the following advantages that (1) the system communication lines are greatly reduced, so that the cost is reduced; (2) an implementation way is simple and effective.
Description
Technical field
The present invention relates to a kind of method of signal transacting, particularly relate to a kind of method of drive singal and communication signal transmission and parsing in a physical signal lines simultaneously.
Background technology
Along with the fast development of economy, China strengthens gradually in high-power, high-tension dynamics of investment such as EHV transmission, flexible DC power transmission, high ferros, makes power electronic technology in parallel with application of the manystage cascade connection future development and breakthrough towards high-power, high voltage.
For multi-parallel multi-cascade Complex Power electronics transformation system, comprise a long-range control host machine and multiple local driving control unit.Main frame needs, by transmission line, drive singal is issued to local driving control unit, then weak signal is strengthened by driving control unit, is applied in power electronic device, completes high-power electric and electronic conversion.
If main frame needs some information to pass to driving control unit, energy of passing on Gong under needing the other connection of increase to complete communication information when completing intelligent scheduling.But for multi-parallel multi-cascade Complex Power electronics transformation system, main frame connects multiple driving control unit, the connection of increase makes the shortcoming that whole system difficult wiring, difficulty of construction strengthen, cost increases.
The function that the present invention utilizes the drive signal line between existing main frame and each driving control unit to complete activation bit and communication information to transmit simultaneously simultaneously, solves due to the more drawback of connection, make whole system more intelligent, dispatch more convenient.
Summary of the invention
The technical problem that the present invention solves is: a kind of method building activation bit based on Same Physical holding wire and communication information transmission and parsing, increases the too much drawback of connection cabling to overcome multi-parallel multi-cascade Complex Power electronics transformation system.
The present invention realizes especially by following technical scheme:
A kind of driving based on Same Physical circuit and communication signal processing method, be applied to multi-parallel multi-cascade Complex Power electronics transformation system, described system comprises long-range control host machine, multiple local driving governor and the multiple power devices corresponding with driving governor; Described long-range control host machine by down pass holding wire 1,2 ... N connect respectively local driving governor 1,2 ... N, its signal transmitted comprises activation bit 1, the communication information 1 respectively ... activation bit N, communication information N; Described method by described activation bit 1,2 ... N and communication information 1,2 ... the carrying out of the ON time of N by low and high level and low and high level on main frame is encoded, then decode at local driving governor, described activation bit and communication information are separated.
Enter a ground, described activation bit 1,2 ... N content comprises described main frame and assigns to the duty ratio of local driving governor, and local driving governor 1,2 ... after N carries out power amplification, to power device 1,2 ... N drives, and completes Technics of Power Electronic Conversion.
Enter a ground, described communication information 1,2 ... N content comprises the relevant information such as sample information list, the whole information of duty ratio fine delay, communication mode change that main frame needs local driving governor feedback; Described local driving governor by up-delivering signal line 1,2 ... N is connected to main frame, and its content being uploaded to main frame comprises the electric current and voltage sampling of power device, duty ratio time delay, actual power device service time and mistake, warning message.
Further, when duty ratio exports as high level, under described main frame, the number of delivering a letter generative process is as follows: main frame sends down the number of delivering a letter high level lasting time and is greater than T time of delay
delay, now drive singal is open-minded; Subsequently every a set time T, low level sent out by main frame, and this low duration is T
pulse, T
pulse<T
delay; When low duration is greater than T
delay, now drive closedown.
Further, when duty ratio exports as high level, local driving governor resolving is as follows: when detecting that main frame sends down the rising edge of the number of delivering a letter, and high level lasting time is greater than T
delay, then local drived control sends high level, opens corresponding power device; When the number of delivering a letter trailing edge again being detected down, and low level time maintains more than T
pulse, then think communication signal logical one, if high level is held time reach time T, then think communication signal logical zero; When low level is held time more than T
delay, then think that main frame sends out the instruction of cutting out drive singal, local drived control closes corresponding power device.
Further, when duty ratio exports as low level, under main frame, the number of delivering a letter generative process is as follows: main frame sends down the number of delivering a letter low duration and is greater than T time of delay
delay, now drive singal is closed; Subsequently every a set time T, high level sent out by main frame, and this high level lasting time is T
pulse, T
pulse<T
delay; When high level lasting time is greater than T
delay, now drive open-minded.
Further, when duty ratio exports as low level, local driving governor resolving is as follows: when detecting that main frame sends down the low level trailing edge of the number of delivering a letter, and low duration is greater than T
delay, then drive singal sends low level, closes corresponding power device; When the number of delivering a letter rising edge again being detected down, and high level time maintains more than T
pulse, then think communication signal logical one, if low level is held time reach time T, then think communication signal logical zero; When rising edge being detected and high level is held time more than T
delay, then think that the instruction of opening drive singal sent out by main frame, open corresponding power device.
Further, described delay time T
delaythe delay of the duty cycle signals of the duty cycle signals that will transmit for main frame and local driving governor, the signal lower than this pulse duration can by filtering.
Further, described T
pulsebe set as 1/4 ~ 1/2 T
delay.
Accompanying drawing explanation
Fig. 1 is the multi-parallel multi-cascade Complex Power electronics transformation system schematic diagram based on the transmission driving of Same Physical circuit and communication signal;
Fig. 2 is drive signal waveform figure;
Fig. 3 is that duty ratio exports as driving during high level and communication signal transmission, resolves schematic diagram;
Fig. 4 is that duty ratio exports as driving during low level and communication signal transmission, resolves schematic diagram.
Embodiment
Illustrate below in conjunction with accompanying drawing and embodiment the present invention is further described.
The present invention constructs a kind of multi-parallel multi-cascade Complex Power electronics transformation system, and as shown in Figure 1, this system comprises long-range control host machine, multiple driving governor and the multiple power devices corresponding with driving governor.Described long-range control host machine by down pass holding wire 1,2 ... N connect respectively local driving governor 1,2 ... N, its signal transmitted comprises activation bit 1, the communication information 1 respectively ... activation bit N, communication information N.By described activation bit 1,2 ... N and communication information 1,2 ... the carrying out of the ON time of N by low and high level and low and high level on main frame is encoded, and then decodes at local driving governor, by described activation bit and communication information separately.
Described activation bit 1,2 ... N content comprises console controller and assigns to the duty ratio of local driving governor, and local driving governor 1,2 ... after N carries out power amplification, to power device 1,2 ... N drives, and completes Technics of Power Electronic Conversion.Described communication information 1,2 ... N content comprises the relevant information such as sample information list, the whole information of duty ratio fine delay, communication mode change that main frame needs local driving governor feedback; Described local driving governor by up-delivering signal line 1,2 ... N is connected to main frame, and its content being uploaded to main frame comprises the electric current and voltage sampling of power device, duty ratio time delay, actual power device service time and mistake, warning message.The coding at long-range control host machine of described driving and communication signal and the decoding process of local driving governor have two kinds of modes along with the high level of duty ratio and low level.
When duty ratio exports as high level, it is as follows that long-range control host machine passes signal creating method down: main frame sends down the number of delivering a letter high level lasting time and is greater than T time of delay
delay, now drive singal is open-minded.Described delay time is the delay of the duty cycle signals of duty ratio (PWM) information that will transmit of main frame and local driving governor, as shown in Figure 2.Described time of delay is that driving governor adds, and be generally between 300 ~ 500ns, the signal lower than this pulse duration can by filtering.Subsequently every a set time T, long-range control host machine sends out low level, and this low duration is T
pulse, T
pulse<T
delay, this time can be set as 1/4 ~ 1/2 T
delay.T is greater than when driving low duration
delay, now dynamic signal at stop.
When duty ratio exports as high level, local driving governor analytic method is as follows: when detecting that main frame sends down the rising edge of the number of delivering a letter, and high level lasting time is greater than T
delay, then the drive singal of local drived control sends high level, opens corresponding power device.When the number of delivering a letter trailing edge again being detected down, and low level time maintains more than T
pulse, then think communication signal logical one, if high level is held time reach time T, then think communication signal logical zero.When low level is held time more than T
delay, then think that main frame sends out the instruction of cutting out drive singal, close corresponding power device.
When duty ratio exports as low level, it is as follows that main frame passes signal creating method down: main frame sends down the number of delivering a letter low duration and is greater than T time of delay
delay, now drive singal is closed.As shown in Figure 3.Subsequently every a set time T, send out high level, this high level lasting time is T
pulse.When drive singal is opened again, high level lasting time is greater than T
delay, now drive open-minded.
When duty ratio exports as low level, local driving governor analytic method is as follows: when detecting that main frame sends down the low level trailing edge of the number of delivering a letter, and low duration is greater than T
delay, then drive singal sends low level, closes corresponding power device.When the number of delivering a letter rising edge again being detected down, and high level time maintains more than T
pulse, then think communication signal logical one, if low level is held time reach time T, then think communication signal logical zero.When rising edge being detected and high level is held time more than T
delay, then think that the instruction of opening drive singal sent out by main frame, open corresponding power device.
By transmission and the parsing that multi-cascade Complex Power electronics transformation system in parallel namely can be made by a physical cord with upper type to be realized drive singal and communication signal line, it has the following advantages:
1, greatly system communication cabling is reduced, cost-saving;
2, implementation is simple, effective.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. the driving based on Same Physical circuit and communication signal processing method, be applied to multi-parallel multi-cascade Complex Power electronics transformation system, described system comprises long-range control host machine, multiple local driving governor and the multiple power devices corresponding with driving governor; Described long-range control host machine by down pass holding wire 1,2 ... N connect respectively local driving governor 1,2 ... N, its signal transmitted comprises activation bit 1, the communication information 1 respectively ... activation bit N, communication information N; Described method by described activation bit 1,2 ... N and communication information 1,2 ... the carrying out of the ON time of N by low and high level and low and high level on main frame is encoded, then decode at local driving governor, described activation bit and communication information are separated.
2. signal processing method according to claim 1, it is characterized in that: described activation bit 1,2 ... N content comprises described main frame and assigns to the duty ratio of local driving governor, and local driving governor 1,2 ... after N carries out power amplification, to power device 1,2 ... N drives, and completes Technics of Power Electronic Conversion.
3. signal processing method according to claim 1, is characterized in that: described communication information 1,2 ... N content comprises the relevant information such as sample information list, the whole information of duty ratio fine delay, communication mode change that main frame needs local driving governor feedback; Described local driving governor by up-delivering signal line 1,2 ... N is connected to main frame, and its content being uploaded to main frame comprises the electric current and voltage sampling of power device, duty ratio time delay, actual power device service time and mistake, warning message.
4. signal processing method according to claim 1, is characterized in that: when duty ratio exports as high level, under described main frame, the number of delivering a letter generative process is as follows: main frame sends down the number of delivering a letter high level lasting time and is greater than T time of delay
delay, now drive singal is open-minded; Subsequently every a set time T, low level sent out by main frame, and this low duration is T
pulse, T
pulse<T
delay; When low duration is greater than T
delay, now drive closedown.
5. signal processing method according to claim 1, is characterized in that: when duty ratio exports as high level, local driving governor resolving is as follows: when detecting that main frame sends down the rising edge of the number of delivering a letter, and high level lasting time is greater than T
delay, then local drived control sends high level, opens corresponding power device; When the number of delivering a letter trailing edge again being detected down, and low level time maintains more than T
pulse, then think communication signal logical one, if high level is held time reach time T, then think communication signal logical zero; When low level is held time more than T
delay, then think that main frame sends out the instruction of cutting out drive singal, local drived control closes corresponding power device.
6. signal processing method according to claim 1, is characterized in that: when duty ratio exports as low level, under main frame, the number of delivering a letter generative process is as follows: main frame sends down the number of delivering a letter low duration and is greater than T time of delay
delay, now drive singal is closed; Subsequently every a set time T, high level sent out by main frame, and this high level lasting time is T
pulse, T
pulse<T
delay; When high level lasting time is greater than T
delay, now drive open-minded.
7. signal processing method according to claim 1, is characterized in that: when duty ratio exports as low level, local driving governor resolving is as follows: when detecting that main frame sends down the low level trailing edge of the number of delivering a letter, and low duration is greater than T
delay, then drive singal sends low level, closes corresponding power device; When the number of delivering a letter rising edge again being detected down, and high level time maintains more than T
pulse, then think communication signal logical one, if low level is held time reach time T, then think communication signal logical zero; When rising edge being detected and high level is held time more than T
delay, then think that the instruction of opening drive singal sent out by main frame, open corresponding power device.
8. the signal processing method according to any one of claim 4-7, is characterized in that: described delay time T
delaythe delay of the duty cycle signals of the duty cycle signals that will transmit for main frame and local driving governor, the signal lower than this pulse duration can by filtering.
9. the signal processing method according to any one of claim 4-7, is characterized in that: described T
pulsebe set as 1/4 ~ 1/2 T
delay.
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| CN104953800B CN104953800B (en) | 2018-02-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206627A (en) * | 2016-12-16 | 2018-06-26 | 中天海洋***有限公司 | DC-dc conversion equipment |
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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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108206627A (en) * | 2016-12-16 | 2018-06-26 | 中天海洋***有限公司 | DC-dc conversion equipment |
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