CN103428058A - Double-circuit FlexRay simulation system based on FlexRay bus - Google Patents
Double-circuit FlexRay simulation system based on FlexRay bus Download PDFInfo
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- CN103428058A CN103428058A CN2013103547218A CN201310354721A CN103428058A CN 103428058 A CN103428058 A CN 103428058A CN 2013103547218 A CN2013103547218 A CN 2013103547218A CN 201310354721 A CN201310354721 A CN 201310354721A CN 103428058 A CN103428058 A CN 103428058A
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Abstract
The invention relates to a double-circuit FlexRay simulation system based on a FlexRay bus. The simulation system comprises a microcontroller, two FlexRay controllers and a USB (universal serial bus) module, the microcontroller is connected with the two FlexRay controllers, each FlexRay controller is connected to the FlexRay bus through a FlexRay transceiver, each FlexRay transceiver can be replaced in a plug manner, data are transmitted by the microcontroller through a USB and a PC (personal computer), so that FlexRay messages based on the PC are received and transmitted, a simulation kernel is operated on the PC and can simultaneously virtualize a plurality of FlexRay buses, and a user can write codes for simulation FlexRay nodes on each virtual FlexRay bus, so that each virtual FlexRay node can be communicated with a node on the real FlexRay bus connected with the virtual FlexRay node.
Description
Technical field
The present invention relates to a kind of electronic equipment, particularly a kind of analogue system based on the FlexRay bus.
Background technology
FlexRay is a kind of confirmability of the high speed for automobile, the bus system that possesses failure tolerant, FlexRay is by transmission of information in definite time slot, and the failure tolerant on two passages and the transmission of redundant information, met the ever-increasing demand to the rate of information throughput especially failure tolerant and time determinability of new x-by-wire system thought.In the development process of FlexRay bus, in order to verify the function of certain node, usually need to be by bus, mutual other nodes that do not have of node are by computer virtual out therewith, and communicate by letter together with real network, thereby to the properties of the tested node of abundant checking, and the performance of whole network.
Common way is to use USB to turn the interface card of FlexRay, and FlexRay bus and computer are coupled together, and on host computer, by USB interface, controls slave computer sending and receiving message, with the node on bus, carries out emulation.The problem that such analogue system exists is: 1, a general system is only supported a FlexRay bus, to gateway and multichannel FlexRay bus, supports bad; 2,, because transceiver is fixed, can not support high speed FlexRay, low speed FlexRay and single line FlexRay simultaneously.
Summary of the invention
Purpose of the present invention, exactly in order to overcome multichannel FlexRay bus support issue and the scaling concern in FlexRay Bus simulator process, used the hardware of supporting two-way FlexRay, and the transceiver of each FlexRay interface can be replaced by plug simultaneously.
Concrete technical scheme provided by the invention is as follows:
A kind of two-way FlexRay analogue system based on the FlexRay bus, use microcontroller to be connected with two FlexRay controllers, each FlexRay controller is connected to respectively on the FlexRay bus, each FlexRay transceiver can be replaced by pluggable mode, thereby microcontroller carries out by usb bus and PC the transmitting-receiving that transfer of data realizes the FlexRay message, carry out emulation on PC, make each virtual emulation FlexRay node of PC that factum be arranged.
A kind of two-way FlexRay analogue system based on the FlexRay bus, comprise hardware circuit, program of lower computer and host computer procedure.
A kind of two-way FlexRay analogue system based on the FlexRay bus, described hardware circuit is comprised of microcontroller, two FlexRay controllers, USB modules; Microcontroller is connected with two FlexRay controllers, and each FlexRay controller connects a FlexRay transceiver, and each FlexRay transceiver all is connected to one independently on the FlexRay bus.
A kind of two-way FlexRay analogue system based on the FlexRay bus, after described FlexRay controller listens to FlexRay message or erroneous frame on bus, by the data feedback monitored to microcontroller, microcontroller reads in local message reception buffer zone by it, and the data in reception buffer zone are uploaded to PC by the USB module.
A kind of two-way FlexRay analogue system based on the FlexRay bus, after described USB module receives the order of host computer, be configured microcontroller, comprises configuration of FlexRay bus parameter etc.
A kind of two-way FlexRay analogue system based on the FlexRay bus, the dummy node in described host computer procedure artificial network, and pass to slave computer by the message that the USB driver will need to send and sent; The message simultaneously by the USB driver, slave computer received reads and passes to dummy node.
A kind of two-way FlexRay analogue system based on the FlexRay bus, its advantage is, 1, reasonable in design, clear in structure, can virtual any node, and node and node are complete independence, are independent of each other; 2, can support two FlexRay buses to carry out while emulation, the gateway support function simultaneously.
The accompanying drawing explanation
Fig. 1 is total Organization Chart that in the invention process method, upper and lower computer connects
The actuating logic that Fig. 2 is hardware circuit in the invention process method
Fig. 3 is analogue system actuating logic in the invention process method
In Fig. 1, microcontroller (101), FlexRay controller (102), FlexRay transceiver block (103), FlexRay bus FlexRayH(104), FlexRay bus FlexRayL(105), USB module (106), PC (109), lower computer hardware circuit (110), USB line (111), power module (112), passage 1 sends indicator light (113), passage 1 codan lamp (114), the wrong indicator light of passage 1 (115), passage 2 sends indicator light (116), passage 2 codan lamps (117), the wrong indicator light of passage 2 (118), FlexRay transceiver daughter board (119), FlexRay transceiver daughter board (120), FlexRay transceiver daughter board (121)
In Fig. 2, FlexRay controller reception buffer zone (201), the FlexRay controller sends buffering area (202), local FlexRay sends buffering area (203), local FlexRay reception buffer zone (204), testing engine (205), message USB sends buffering area (208), message USB reception buffer zone (209), computer CPU (211), FlexRay Bus simulator application program (212)
In Fig. 3, USB driver (301), USB reception buffer zone (302), USB sends buffering area (303), FlexRay Bus simulator program (304)
Embodiment
In Fig. 1, lower computer hardware circuit (110) comprises microcontroller (101), USB module (106) and FlexRay transceiver block (103), lower computer hardware circuit (110) is connected to PC (109) by USB cable (111), simultaneously by FlexRay bus FlexRayH(104) and FlexRayL(105) be connected to other nodes (112) on bus.
Microcontroller (101) connects at least one FlexRay controller (102), the TX pin of each FlexRay controller and RX pin are connected respectively TX pin and the RX pin of FlexRay transceiver block (103), the FlexRayH of FlexRay transceiver is connected to FlexRay bus FlexRayH(104), the FlexRayL of FlexRay transceiver is connected to the FlexRayL(105 of FlexRay bus).
Microcontroller (101), inner integrated CPU and internal memory, be connected with one or more independently FlexRay controllers; Or inner integrated one or more FlexRay controllers; What Fig. 1 showed is the situation of the inner integrated FlexRay controller of microcontroller (102).
FlexRay controller (102), protocol conversion chip as the FlexRay bus, be responsible for the information such as the message on the FlexRay bus and erroneous frame are fed back to microcontroller, each FlexRay controller has TX and the RX pin be connected with the FlexRay transceiver.
In Fig. 2, lower computer hardware circuit (110) is connected to PC (109) by USB cable (111), PC (109) comprises at least one central processing unit (211), PC (109) internal operation automated server application program (212) and at least one Automation Client application program (213).
Lower computer hardware circuit (110) is by connecting FlexRay bus FlexRayH(104) and FlexRay bus FlexRayL(105) with other nodes, communicate.
The flow process that lower computer hardware circuit (110) receives from the message of FlexRay bus is, after the transceiver that its FlexRay controller (102) connects by FlexRay transceiver block (103) listens to the FlexRay message, by its buffer memory to inner FlexRay reception buffer zone (201), and notice microcontroller (101), microcontroller (101) is saved in message USB reception buffer zone (209) by calling receiver function (204) by the message of receiving, by USB module (106) by these data upload to PC (109).
The transmission flow of lower computer hardware circuit (110) is, slave computer microcontroller (101) sends buffering area (208) and reads the message data that will send from USB module (106) from message USB, needs are sent to message on bus put into the FlexRay of FlexRay controller (102) and send buffering area by sending function (203) again, send to the FlexRayH(104 of FlexRay bus via FlexRay controller (102) by the transceiver of FlexRay transceiver block (103) connection) and FlexRayL(105) on.
In Fig. 3, the FlexRay Bus simulator program (304) of host computer internal operation is connected to USB cable (111) by USB driver (301), thereby and sets up usb communication between lower computer hardware circuit (110).
Simulation flow in Fig. 3 is, the virtual two FlexRay buses of FlexRay Bus simulator program (304), and fictionalize the node that needs emulation at each on virtual bus, USB transmission buffering area (303) is all put in sending request of the node of emulation, and be issued in lower computer hardware circuit (110) by USB driver (301), which by the virtual FlexRay network at simulation node place and the objective network of simulation node transmission, determine to send on the true FlexRay bus of root of slave computer; After USB driver (301) has been received the FlexRay message data of monitoring from slave computer, these data are deposited in USB reception buffer zone (302), and FlexRay Bus simulator program (304) reads these data and sends it to each simulation node.
Claims (8)
1. the two-way FlexRay analogue system based on the FlexRay bus, it is by microcontroller, two FlexRay controllers and USB module form, it is characterized in that, microcontroller is connected with two FlexRay controllers, each FlexRay controller is connected to the FlexRay bus by the FlexRay transceiver respectively, each FlexRay transceiver can be replaced by pluggable mode, thereby microcontroller carries out transfer of data by usb bus and PC realizes the FlexRay packet sending and receiving based on PC, move simulation kernel on PC, simulation kernel is virtual many FlexRay buses simultaneously, the user can write code for the emulation FlexRay node on every virtual FlexRay bus, thereby make each virtual FlexRay node can with coupled real FlexRay bus on node communicate.
2. a kind of two-way FlexRay analogue system based on the FlexRay bus according to claim 1, is characterized in that, system comprises hardware circuit, program of lower computer and host computer procedure.
3. a kind of two-way FlexRay analogue system based on the FlexRay bus according to claim 2, is characterized in that, described hardware circuit is comprised of microcontroller, two FlexRay controllers, USB modules; Microcontroller is connected with two FlexRay controllers, and each FlexRay controller connects a FlexRay transceiver, and each FlexRay transceiver all is connected to one independently on the FlexRay bus.
4. a kind of two-way FlexRay analogue system based on the FlexRay bus according to claim 3, it is characterized in that, after described FlexRay controller listens to FlexRay message or erroneous frame on bus, by the data feedback monitored to microcontroller, microcontroller reads in local message reception buffer zone by it, and the data in reception buffer zone are uploaded to PC by the USB module.
5. a kind of two-way FlexRay analogue system based on the FlexRay bus according to claim 4, is characterized in that, after described USB module receives the order of host computer, microcontroller is configured, and comprises configuration of FlexRay bus parameter etc.
6. a kind of two-way FlexRay analogue system based on the FlexRay bus according to claim 2, the dummy node in described host computer procedure artificial network, and pass to slave computer by the message that the USB driver will need to send and sent; The message simultaneously by the USB driver, slave computer received reads and passes to dummy node.
7. a kind of two-way FlexRay analogue system based on the FlexRay bus according to claim 6, it is characterized in that, described each emulation FlexRay node has relevant code to write interface, obtains executable code by compiling, and calls execution via simulation engine.
8. a kind of two-way FlexRay analogue system based on the FlexRay bus according to claim 7, it is characterized in that, described each emulation FlexRay node can receive the bus message of uploading by USB interface, logic reaction for the FlexRay event on bus with decision emulation FlexRay node by the corresponding executable code of each node, the message that needs simulation node to send will be transferred to USB interface and be issued to the lower computer hardware circuit by simulation kernel, and be dealt on bus via the FlexRay module of slave computer.
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| CN2013103547218A CN103428058A (en) | 2013-08-14 | 2013-08-14 | Double-circuit FlexRay simulation system based on FlexRay bus |
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| CN2013103547218A CN103428058A (en) | 2013-08-14 | 2013-08-14 | Double-circuit FlexRay simulation system based on FlexRay bus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104683201A (en) * | 2015-02-05 | 2015-06-03 | 南京航空航天大学 | Quad-redundant method for FlexRay bus communication |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309193A (en) * | 2008-06-13 | 2008-11-19 | 中国科学院电工研究所 | USB-Flexray bus adapter based on micro-processor |
| CN103034609A (en) * | 2012-12-15 | 2013-04-10 | 南京航空航天大学 | Four-channel FlexRay bus communication module |
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2013
- 2013-08-14 CN CN2013103547218A patent/CN103428058A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309193A (en) * | 2008-06-13 | 2008-11-19 | 中国科学院电工研究所 | USB-Flexray bus adapter based on micro-processor |
| CN103034609A (en) * | 2012-12-15 | 2013-04-10 | 南京航空航天大学 | Four-channel FlexRay bus communication module |
Non-Patent Citations (1)
| Title |
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| 罗峰等: "基于FlexRay的车载网络***开发", 《电子测量与仪器学报》, no. 1, 31 December 2009 (2009-12-31), pages 289 - 295 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104683201A (en) * | 2015-02-05 | 2015-06-03 | 南京航空航天大学 | Quad-redundant method for FlexRay bus communication |
| CN104683201B (en) * | 2015-02-05 | 2017-11-24 | 南京航空航天大学 | A kind of remaining method of FlexRay bus communications four |
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Application publication date: 20131204 |