CN102097730B - Method for processing CAN bus cable network - Google Patents
Method for processing CAN bus cable network Download PDFInfo
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- CN102097730B CN102097730B CN 200910200330 CN200910200330A CN102097730B CN 102097730 B CN102097730 B CN 102097730B CN 200910200330 CN200910200330 CN 200910200330 CN 200910200330 A CN200910200330 A CN 200910200330A CN 102097730 B CN102097730 B CN 102097730B
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Abstract
The invention discloses a method for processing a controller area network (CAN) bus cable, which comprises processing of the cable, processing of a bus coupler and processing of a bus terminal resistor. The CAN bus processed by the method has personal electrical performance, and has high reliability suitable for astronavigation flight. The CAN bus processed by the method is connected with each RUT (namely electric control unit (ECU), named as a remote unit in satellite design) in a single wire mode and communicated with the each RUT through a central control unit (CTU), and the each RUT realizes corresponding control and monitoring functions so as to realize control and monitoring of a satellite.
Description
Technical field
The present invention relates to a kind of processing method of CAN bus cable net.
Background technology
Along with the development of satellite technology, field bus technique more and more widely the design that is applied to satellite with produce, fieldbus relatively more commonly used at present mainly contains 1553B and CAN bus, these two kinds of buses have obtained application in the multi-satellite model.With respect to the CAN bus, the 1553B bus has formed perfect bus design and the processing method of a cover than standard, the design of CAN bus and processing, also do not form unified design and processing method, for this reason, carried out the design of CAN bus and the research of processing method.
Though the CAN bus has obtained application in satellite model in the past, CAN bus design and processing method with feature of the present invention also do not have.In order to guarantee that the CAN bus has the electrical property of CAN bus itself, also have the high reliability that suitable aircraft uses, be convenient to processing, test and the test of bus cable simultaneously, under the prerequisite of comprehensive above-mentioned requirements, a kind of CAN bus cable net has been invented in research.
Do not find at present explanation or the report of technology similar to the present invention, do not collect both at home and abroad similarly data as yet yet.
Summary of the invention
In order to guarantee that the CAN bus has the electrical property of CAN bus itself, has the high reliability that suitable aerospace flight is used simultaneously, be convenient to processing, test and the test of bus cable simultaneously, technical problem to be solved by this invention is the processing method that proposes a kind of brand-new CAN bus cable net.
The present invention for the technical scheme that solves its technical problem proposition is: a kind of processing method of CAN bus cable net, comprise the processing of cable, the processing of bus coupler and the processing of bus termination resistance, and comprise the steps:
The processing of cable: at first process the main cable of respective length, processing wiring down then is connected backbone by the coupler pcb board with following wiring;
The processing of bus coupler is carried out at the coupler pcb board: at first finish the processing of pcb board, and after finishing backbone and following wiring and welding with pcb board respectively, earlier the solder joint on the pcb board being carried out a glue seals admittedly, pcb board is assemblied in the stainless steel casing that has processed then, after assembling is finished, whole coupling module is carried out plastic packaging, reserve air vent in the time of plastic packaging;
The processing of the outer terminal resistance of star: at first terminal resistance is welded on the connector, then terminal resistance is carried out a glue protection, and be installed in the stainless steel protection cap that processes on the connector and carry out solid envelope, admittedly keep air vent in the envelope process.
With respect to prior art, the present invention is according to the electrical property of CAN bus and the characteristic of characteristic impedance, the processing of following wiring; In order to adapt to the high reliability request that aerospace is used, the processing of bus coupler is the welding at the enterprising row bus cable of coupler pcb board of special use, is contained in after pcb board machines in the special-purpose stainless steel casing, and whole assembly is carried out plastic packaging, protects; The outer terminal resistance of celestial body adopts stainless steel material to make protective cap, and in the welding of the intact terminal resistance in the basis of finished product electric connector, and some glue seals admittedly and protects; The terminal resistance of the cable other end is directly welding on cable, and adopts plastic packaging to protect.
The CAN bus cable netting gear that processing obtains according to the inventive method has high reliability, simultaneously, adopt the method for designing of above-mentioned coupler, also be convenient to the processing of cable, because cable assembly has possessed the complete characteristic of CAN bus, can independently test and test, having changed in the past, the bus cable net lacks independence, when the bus cable net is tested and is tested, need to insert design or the assembly of some non-cable systems itself, or can only after the system integration, can test and test the bus cable net, improved the efficient of test and test.
Description of drawings
Fig. 1 is CAN bus cable grid connect mode of the present invention;
Fig. 2 is the coupler connected mode of CAN bus cable net of the present invention;
Fig. 3 is the outer terminal resistance design drawing of the star of CAN bus cable net of the present invention;
Fig. 4 is CAN bus cable net topological structure figure of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, further set forth the present invention.These embodiment are interpreted as only being used for explanation the present invention and are not used in restriction protection scope of the present invention.After the content of having read the present invention's record, those skilled in the art can make various changes or modifications the present invention, and these equivalences change and modify and fall into claim of the present invention institute restricted portion equally.
The processing method of the CAN bus cable net that the preferred embodiment of the present invention provides comprises the processing of cable, the processing of bus coupler and the processing of bus termination resistance, is illustrated respectively below in conjunction with accompanying drawing:
As shown in Figure 1, the CAN bus cable net of present embodiment comprises terminate load on bus cable, coupling module, following wiring and the line, and the length of backbone is chosen according to actual conditions, backbone adopts the multiple twin shielding conductor, characteristic impedance is 120 Ω,, meet the instructions for use of aerospace level.Mark among Fig. 1 and be of a size of the actual size of using in certain satellite model, the cable length that following wiring is selected is unified to be 250mm, and following connection cable is consistent with the backbone cable, also adopts the multiple twin shielding conductor, and characteristic impedance is 120 Ω, meets the instructions for use of aerospace level.
In the course of processing, at first according to the main cable of design drawing processing respective length, processing wiring down then is connected backbone by coupling module with following wiring.Main cable and following connection cable all adopt the multiple twin shielding conductor, and two heart yearns of multiple twin shielding conductor are defined as respectively: CAN_H and CAN_L meet CAN_H and the CAN_L of CAN Bus Interface Chip respectively.On two heart yearns of the backbone that the bus termination resistance in the star directly welds, impedance is 120 Ω, meets the instructions for use of aerospace level, with its plastic packaging and keep air vent hole.
As shown in Figure 2, the coupling module of present embodiment comprises the plastic packaging of welding, stainless steel casing and whole module of design, the cable of pcb board.
In the course of processing, at first finish the processing (producing process of pcb board need satisfy the aerospace level and require) of pcb board, after finishing the welding of trunk and following wiring, earlier the solder joint on the pcb board being carried out a glue seals admittedly, pcb board is assemblied in the stainless steel casing that has processed then, after assembling is finished, whole module is carried out plastic packaging, note reserving air vent in the time of plastic packaging.Main cable access module top access point, the CAN_H in the trunk and CAN_L respectively with module in CAN_H be connected with CAN_L point, the access point below the cable access module of following wiring, respectively with module in CAN_H be connected with the CAN_L point.
As shown in Figure 3, the design of the outer terminal resistance of the star of present embodiment comprises connector, terminal resistance and stainless steel protection cap.The parts of being made up of above-mentioned three parts are called terminal assembly.
In the course of processing, at first terminal resistance is welded on the connector, the connector model is: PL155-47 and PL155FL-47, meet the instructions for use of aerospace level, and it is 120 Ω that terminal resistance adopts impedance, meets the resistance of aerospace level instructions for use.Note protection and the insulation of element pin in the welding process, then terminal resistance is carried out a glue protection, at last the stainless steel protection cap that processes is installed on the connector, and carries out solid envelope, admittedly note keeping air vent in the envelope process.The center contact point of connector is connected with the CAN_H of main cable in the terminal assembly, and inferior outer contact point is connected with the CAN_L of main cable.
As shown in Figure 4, the CAN bus of present embodiment (is ECU (Electrical Control Unit) ECU by single line mode and each RUT, be called in the design of satellites and far put the unit) connect, communicate by letter with each RUT by central control unit (CTU), realize corresponding control and monitoring function by each RUT, thereby realize control and monitoring to satellite.
Claims (1)
1. the processing method of a CAN bus cable net is characterized in that, comprises the processing of cable, the processing of bus coupler and the processing of bus termination resistance, comprises the steps:
The processing of cable: at first process the main cable of respective length, processing wiring down then is connected backbone by the coupler pcb board with following wiring;
The processing of bus coupler is carried out at the coupler pcb board: at first finish the processing of pcb board, and after finishing backbone and following wiring and welding with pcb board respectively, earlier the solder joint on the pcb board being carried out a glue seals admittedly, pcb board is assemblied in the stainless steel casing that has processed then, after assembling is finished, whole coupling module is carried out plastic packaging, reserve air vent in the time of plastic packaging;
The processing of the outer terminal resistance of star: at first terminal resistance is welded on the connector, then terminal resistance is carried out a glue protection, and be installed in the stainless steel protection cap that processes on the connector and carry out solid envelope, admittedly keep air vent in the envelope process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910200330 CN102097730B (en) | 2009-12-11 | 2009-12-11 | Method for processing CAN bus cable network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910200330 CN102097730B (en) | 2009-12-11 | 2009-12-11 | Method for processing CAN bus cable network |
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| Publication Number | Publication Date |
|---|---|
| CN102097730A CN102097730A (en) | 2011-06-15 |
| CN102097730B true CN102097730B (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910200330 Active CN102097730B (en) | 2009-12-11 | 2009-12-11 | Method for processing CAN bus cable network |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103117494B (en) * | 2013-01-25 | 2015-04-01 | 中国航天时代电子公司 | Integration forming method for 1553B bus cable system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409588A (en) * | 2001-09-25 | 2003-04-09 | 沈锦仁 | Equipment net I/O contact mounting in explosive and other dangerous site |
| CN2932455Y (en) * | 2006-08-08 | 2007-08-08 | 上海本安仪表系统有限公司 | Cast CAN bus isolated safety grid |
| US7312628B2 (en) * | 2005-11-29 | 2007-12-25 | Motorola, Inc. | Method and apparatus for CAN bus auto-termination |
| CN201113112Y (en) * | 2007-06-15 | 2008-09-10 | 中国电子科技集团公司第四十一研究所 | Conversion device for 1394 interface and multi-core aerial plug |
| JP4341268B2 (en) * | 2003-03-19 | 2009-10-07 | セイコーエプソン株式会社 | Package for piezoelectric device, piezoelectric device, mobile phone device using piezoelectric device, and electronic equipment using piezoelectric device |
| CN201336487Y (en) * | 2008-12-25 | 2009-10-28 | 江苏华光电缆电器有限公司 | Electric connecting cable between different adjacent environmental conditions |
-
2009
- 2009-12-11 CN CN 200910200330 patent/CN102097730B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409588A (en) * | 2001-09-25 | 2003-04-09 | 沈锦仁 | Equipment net I/O contact mounting in explosive and other dangerous site |
| JP4341268B2 (en) * | 2003-03-19 | 2009-10-07 | セイコーエプソン株式会社 | Package for piezoelectric device, piezoelectric device, mobile phone device using piezoelectric device, and electronic equipment using piezoelectric device |
| US7312628B2 (en) * | 2005-11-29 | 2007-12-25 | Motorola, Inc. | Method and apparatus for CAN bus auto-termination |
| CN2932455Y (en) * | 2006-08-08 | 2007-08-08 | 上海本安仪表系统有限公司 | Cast CAN bus isolated safety grid |
| CN201113112Y (en) * | 2007-06-15 | 2008-09-10 | 中国电子科技集团公司第四十一研究所 | Conversion device for 1394 interface and multi-core aerial plug |
| CN201336487Y (en) * | 2008-12-25 | 2009-10-28 | 江苏华光电缆电器有限公司 | Electric connecting cable between different adjacent environmental conditions |
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|---|---|
| CN102097730A (en) | 2011-06-15 |
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Owner name: SHANGHAI AEROSPACE TECHNOLOGY INSTITUTE Free format text: FORMER OWNER: SHANGHAI SATELLITE ENGINEERING RESEARCH INSTITUTE Effective date: 20140919 |
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Effective date of registration: 20140919 Address after: 201109 Shanghai Yuanjiang Road No. 3888 Patentee after: Shanghai Aerospace Technology Institute Address before: 200240 Shanghai city Minhang District Huaning Road No. 251 Patentee before: Shanghai Satellite Engineering Research Institute |