CN106789492A - A kind of data transmission method for uplink of isolated actuator controlling bus and a kind of data receiver method of isolated actuator controlling bus - Google Patents
A kind of data transmission method for uplink of isolated actuator controlling bus and a kind of data receiver method of isolated actuator controlling bus Download PDFInfo
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- CN106789492A CN106789492A CN201610791721.8A CN201610791721A CN106789492A CN 106789492 A CN106789492 A CN 106789492A CN 201610791721 A CN201610791721 A CN 201610791721A CN 106789492 A CN106789492 A CN 106789492A
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- controlling bus
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Abstract
The invention discloses the data transmission method for uplink and a kind of data receiver method of isolated actuator controlling bus of a kind of isolated actuator controlling bus, the method achieve the isolation of actuator bus transfer, define the data form and logical architecture of actuator transmission, global design improves the antijamming capability of actuator bus communication interface, solve the problems, such as that conventional bus data transfer error detection coverage rate is not high, improve integrality, the reliability of actuator bus data transfer.
Description
Technical field
The invention belongs to the communications field, and in particular to a kind of data transmission method for uplink of isolated actuator controlling bus and
A kind of data receiver method of isolated actuator controlling bus.
Background technology
In civil aircraft control system, actuator controlling bus are used as flight control units and actuator remote electronic unit
Data path, the channel requirements high reliability of its data interaction, high integrality are capable of the mistake of detection data transmission, and energy
Resistance external electromagnetic interference.Traditional RS-485 buses are complicated due to device context and transmission cable approach electromagnetic environment, electric charge product
Tiring out higher common-mode voltage that may be present between the individual nodes can influence the accuracy of data transfer.Although RS-485 is employed
Differential mode be transmitted with reception, with certain anti-common mode disturbances ability, but when common-mode voltage is more than RS-485 receivers
Limiting voltage when, receiver cannot normal work, semiconductor devices can be caused to puncture when serious, cause permanent damage, very
Chip and instrument and equipment can extremely be burnt.And the data transmission format of conventional bus is simple, do not take into full account data it is highly reliable,
High integrality, error detection coverage rate is not also high, and risk is brought to civil aircraft actuator data interaction.
The content of the invention
The technical problem to be solved in the present invention is to improve the antijamming capability of actuator bus communication interface, solves to pass
System bus data transfer error detection coverage rate problem not high, improves integrality, the reliability of actuator bus data transfer.
For the technical solution of the present invention that solves the above problems provides a kind of data sender of isolated actuator controlling bus
Method, comprises the following steps：
Step 1 central management module writes data into the storage area of CRC check device and data buffer, when data are filled in
After finishing commencing signal is sent to pattern generator；
Step 2 pattern generator reads data and sends from CRC check device and data buffer, when data is activation is finished
Remove pattern generation to afterwards one end mark finish of CRC check device and data buffer, CRC check device and data buffer
The data that device has read, while mark feeding central management module is used for the scheduling of overall data.
Technical solution of the present invention also provides a kind of data receiver method of isolated actuator controlling bus, including following step
Suddenly：
Step 1) decoder by 16 times cross frequency samplings by data parse and write packet data-analyzing machine；
Step 2) bag data analyzer enters original data parsing while carry out CRC check according to agreement, when data
Bag mark, packet length and bag data verification it is correct after, by data correctness conclusion judge and data transfer to data storage
In, while the correctness conclusion is reported into central management module；
Step 3) central management module according to correctness conclusion by corresponding data extract use.
The data include packet header, bag mark, packet length, bag data, CRC, bag tail.
Beneficial effects of the present invention：The present invention solves problem present in current actuator controlling bus transmission, improves
The antijamming capability of actuator bus communication interface, solves the problems, such as that conventional bus data transfer error detection coverage rate is not high,
Improve integrality, the reliability of actuator bus data transfer.
Brief description of the drawings
Specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is that isolated actuator controlling bus send structure chart；
Fig. 2 is that isolated actuator controlling bus receive structure chart；
The isolated actuator controlling bus data structure schematic diagrames of Fig. 3；
The isolated actuator controlling bus logical schematic of Fig. 4
Specific embodiment
The present invention proposes a kind of data transmission method for uplink of isolated actuator controlling bus and a kind of isolated start
The data receiver method of device controlling bus, the isolated actuator controlling bus that are used send structure as shown in figure 1, including
RS-485 physical layers, transformer, resistance capacitance；Isolated actuator controlling bus receive structure as shown in Fig. 2 including RS-485
Physical layer, transformer, resistance capacitance.
Isolated actuator controlling bus data structure is as shown in figure 3, it includes packet header, bag mark, packet length, bag number
Constituted according to, CRC, several parts of bag tail.Wherein bag mark, packet length and CRC check are all the data that length is 16bit, and bag number
According to length defined by packet length, it is long to reach the 16bit of 216-1 16bit, i.e., 65535 in theory, but in practice should
This considers combining form of the duty cycle of system, the demand of data, command word or response word type and data etc., closes
Reason formulates bag data.
Packet header：The lead code being made up of continuous 1.5bit low levels, 1.5bit high level and continuous 6 logic `
1 ' composition；Packet header is used to recognize a beginning for packet data.
Bag mark：Continuous 16bit data immediately following packet header are identified for bag, and it defines the type of data, this point with
ARINC429 is similar.16 system number 0xFFFF are prohibitted the use of because this can make CRC check fail.
Packet length：Back to back continuous 16bit data are packet length, and it illustrates the individual of the 16bit data in bag data
Number.Formulating the command word of different packet lengths and response word according to system requirements contributes to the identification and analysis of bag.Bag data：According to
The packet length 16bit numbers of definition, immediately after be bag data part.In actually used, can be added before initial data source/
Purpose detects that whether recipient confirms data with this from correct source, and whether destination address is correct.
CRC check：It is the CRC check of CRC16X25=X16+X12+X5+1 to use CRC check multinomial, verification covering bag
Mark, packet length and bag data.
Bag tail：It is made up of the logic ' 1 ' immediately following CRC check data, 1.5bit high level and continuous 3 logics ' 0 '；Bag
Tail is used for the end of identification data and whether CRC passes through test.
Isolated actuator controlling bus logical construction is as shown in figure 4, including central management module, CRC check device and number
According to buffer, data storage, bag data analyzer, clock controller 1, pattern generator, clock controller 2, decoder group
Into.Wherein central management module carries out the overall scheduling of data, it is ensured that send and receive the integrality and security of data.It is central
When being ready for sending a bag data in the management module of centre,
Central management module writes data into the storage area of CRC check device and data buffer first, when data are filled in
After finishing pattern generator commencing signal is given by send signals；
Pattern generator reads data and sends from CRC check device and data buffer, after data is activation is finished to
One end mark finish of CRC check device and data buffer is used to remove associated reservoir, while mark feeding center
Management module is used for the scheduling of overall data；
Decoder crosses frequency sampling and parses and write packet data-analyzing machine data by 16 times；
Bag data analyzer enters original data parsing while carrying out CRC check according to agreement, final when the bag of data
After the verification of mark, packet length and bag data is correct, by data correctness conclusion judge and data transfer to data storage,
The conclusion is reported into central management module simultaneously；
Corresponding data are extracted and used by central management module according to correctness conclusion.
Claims (4)
1. a kind of data transmission method for uplink of isolated actuator controlling bus, it is characterised in that comprise the following steps：
Step 1 central management module writes data into the storage area of CRC check device and data buffer, is filled in when data and finished
Afterwards commencing signal is sent to pattern generator；
Step 2 pattern generator reads data and sends from CRC check device and data buffer, after data is activation is finished to
One end mark finish of CRC check device and data buffer, CRC check device and data buffer have removed pattern generator
Data through reading, while mark feeding central management module is used for the scheduling of overall data.
2. a kind of data receiver method of isolated actuator controlling bus, it is characterised in that comprise the following steps：
Step 1) decoder by 16 times cross frequency samplings by data parse and write packet data-analyzing machine；
Step 2) bag data analyzer enters original data parsing while carry out CRC check according to agreement, when the bag mark of data
Know, packet length and bag data verification it is correct after, by data correctness conclusion judge and data transfer to data storage, together
When the correctness conclusion is reported into central management module；
Step 3) central management module according to correctness conclusion by corresponding data extract use.
3. a kind of data transmission method for uplink of isolated actuator controlling bus according to claim 1, it is characterised in that institute
Stating data includes packet header, bag mark, packet length, bag data, CRC, bag tail.
4. a kind of data receiver method of isolated actuator controlling bus according to claim 2, it is characterised in that institute
Stating data includes packet header, bag mark, packet length, bag data, CRC, bag tail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791721.8A CN106789492A (en) | 2016-08-31 | 2016-08-31 | A kind of data transmission method for uplink of isolated actuator controlling bus and a kind of data receiver method of isolated actuator controlling bus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791721.8A CN106789492A (en) | 2016-08-31 | 2016-08-31 | A kind of data transmission method for uplink of isolated actuator controlling bus and a kind of data receiver method of isolated actuator controlling bus |
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| CN106789492A true CN106789492A (en) | 2017-05-31 |
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| CN201610791721.8A Pending CN106789492A (en) | 2016-08-31 | 2016-08-31 | A kind of data transmission method for uplink of isolated actuator controlling bus and a kind of data receiver method of isolated actuator controlling bus |
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Citations (6)
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| CN101099333A (en) * | 2005-01-12 | 2008-01-02 | 罗斯蒙德公司 | Isolating system for coupling power and data between a fieldbus and a serial network connection |
| CN103036873A (en) * | 2012-11-29 | 2013-04-10 | 北京无线电测量研究所 | Protocol conversion device for space bus and 1553B bus |
| CN103294411A (en) * | 2013-04-28 | 2013-09-11 | 哈尔滨工业大学 | Low-speed load data loading module with mass memory function |
| CN107211593B (en) * | 2010-01-21 | 2015-04-15 | 西北工业大学 | The traditional communication bus code Design method of light based on FPGA |
| CN204669384U (en) * | 2015-06-16 | 2015-09-23 | 陕西宝成航空仪表有限责任公司 | For the bus interface of multichannel MIL-STD-1553B |
| WO2015150164A1 (en) * | 2014-04-04 | 2015-10-08 | Siemens Aktiengesellschaft | Method for automatic processing of a number of protocol files of an automation system |
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2016
- 2016-08-31 CN CN201610791721.8A patent/CN106789492A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101099333A (en) * | 2005-01-12 | 2008-01-02 | 罗斯蒙德公司 | Isolating system for coupling power and data between a fieldbus and a serial network connection |
| CN107211593B (en) * | 2010-01-21 | 2015-04-15 | 西北工业大学 | The traditional communication bus code Design method of light based on FPGA |
| CN103036873A (en) * | 2012-11-29 | 2013-04-10 | 北京无线电测量研究所 | Protocol conversion device for space bus and 1553B bus |
| CN103294411A (en) * | 2013-04-28 | 2013-09-11 | 哈尔滨工业大学 | Low-speed load data loading module with mass memory function |
| WO2015150164A1 (en) * | 2014-04-04 | 2015-10-08 | Siemens Aktiengesellschaft | Method for automatic processing of a number of protocol files of an automation system |
| CN204669384U (en) * | 2015-06-16 | 2015-09-23 | 陕西宝成航空仪表有限责任公司 | For the bus interface of multichannel MIL-STD-1553B |
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Application publication date: 20170531 |