CN208656791U - A kind of vehicle-mounted Ethernet exploitation test platform - Google Patents
A kind of vehicle-mounted Ethernet exploitation test platform Download PDFInfo
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- CN208656791U CN208656791U CN201821138768.5U CN201821138768U CN208656791U CN 208656791 U CN208656791 U CN 208656791U CN 201821138768 U CN201821138768 U CN 201821138768U CN 208656791 U CN208656791 U CN 208656791U
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Abstract
The utility model discloses a kind of vehicle-mounted Ethernet exploitation test platform, the platform includes at least one second Ethernet switching chip (2) that the first Ethernet switching chip (1) He Yuqi is electrical connected, and the second Ethernet switching chip (2) is electrical connected with ethernet physical layer chip.The utility model is by being arranged multiple Ethernet switching chips, collocation ethernet physical layer chip, construct the network simulating environment of the fast vehicle-mounted Ethernet of a transmission rate, scalability is high, it can be carried out data transmission and exchange between any two port, developer facilitated to carry out the assessment test and verification of software and hardware.
Description
Technical field
The utility model relates to vehicle-mounted Ethernet system, in particular to a kind of vehicle-mounted Ethernet develops test platform.
Background technique
Vehicle-mounted Ethernet is a kind of novel local area network technology that interior electronic unit is connected with Ethernet, with vehicle-mounted ECU
Quantity, number of sensors increase and interior different computing unit and different domains between the demand that communicates with one another increasingly
By force, in-vehicle electronic system becomes increasingly complicated, and the demand to In-vehicle networking bandwidth is also higher and higher；The In-vehicle networking of original mainstream
Such as CAN, LIN, FlexRay, MOST have been unable to satisfy the big data quantities such as ADAS, audio-visual amusement, automatic Pilot, car networking high speed
The demand of transmission, this requires the communication modes of higher communication speed, to guarantee the reliability and real-time of information transmission.
Nowadays, interior harness is the part that third position is accounted for except chassis and engine in weight, this is just determined, is reduced
The technology of harness weight will directly improve the economy that fuel oil uses, such as use LVDS high-speed bus, in cable weight and
It is not dominant in lower deployment cost, and scalability is not also strong.
Utility model content
The purpose of this utility model is that in view of the above-mentioned drawbacks in the prior art, providing a kind of vehicle-mounted Ethernet exploitation survey
Platform is tried, facilitates developer to software and hardware test and verification, scalability is strong.
To realize above-mentioned purpose of utility model, the utility model adopts the technical scheme that a kind of vehicle-mounted Ethernet is opened
Send out test platform, the exploitation test platform include the first Ethernet switching chip and be electrical connected with it at least one second
Ethernet switching chip, the second Ethernet switching chip are electrical connected with ethernet physical layer chip.
In addition, the utility model also proposes following attached technical scheme: second Ethernet switching chip and MCU core
Piece electrical connection, the MCU chip are connected to USB interface.
The ethernet physical layer chip is electrically connected with onboard connector.
ESD protection circuit is provided between the ethernet physical layer chip and onboard connector.
The ESD protection circuit includes the common mode choke and capacitance being connected on signal wire, the ether
TXP pin, the TXN pin of net physical chip are electrically connected with the common mode choke and capacitance respectively.
The common mode choke and capacitance cooperate jointly to the direct current in filtering common mode electric current and disabling signal at
Point.
Electrostatic protection chip is additionally provided on the signal wire.
First Ethernet switching chip is connected with second Ethernet switching chip by the port RGMII.
First, second Ethernet switching chip is electrically connected with gigabit Ethernet physical chip, and RJ45 connector is logical
The gigabit Ethernet physical chip is crossed to be electrically connected with the first, second Ethernet switching chip.
Compared with the prior art, utility model has the advantages that using BroadR-Reach technology, the non-of single pair can be used
Shielded Twisted Pair carries out signal transmission, and transmission speed faster, passes through the vehicle-mounted ethernet physical layer chip Ethernet of independent research
Physical layer, Ethernet switching chip of arranging in pairs or groups, constructs the network simulating environment of a vehicle-mounted Ethernet, facilitates developer in project
The assessment test and verification of software and hardware is carried out before implementing.Scalability is high simultaneously, has the characteristics that big data quantity high-speed transfer.
Detailed description of the invention
Fig. 1 is the vehicle-mounted Ethernet exploitation test platform block diagram of the utility model.
Fig. 2 is the utility model ethernet physical layer chip periphery circuit block diagram.
Specific embodiment
In conjunction with the preferred embodiment and its attached drawing is further unrestricted detailed to technical solutions of the utility model work
Explanation.
As shown in Figure 1, a kind of vehicle-mounted Ethernet develops test platform, this exploitation test platform is based on BroadR-Reach
Technology, with the unshielded twisted pair of single pair carry out signal transmission communication, pass through ethernet physical layer chip 5, arrange in pairs or groups Ethernet
Exchange chip constructs the network simulating environment of a vehicle-mounted Ethernet, facilitate developer carried out before the project implementation software and
The assessment test and verification of hardware.
Further, vehicle-mounted Ethernet exploitation test platform shown in the present embodiment includes five Ethernet switching chips, often
A Ethernet switching chip includes five ports, and port according to actual needs, can be configured to MII, RMII or RGMII mode, this
Connection is preferably the connection of RGMII interface between each Ethernet switching chip of embodiment, has high-speed transfer while reducing data line
The characteristics of.Wherein four ports of first Ethernet switching chip 1 end with other four the second Ethernet switching chips 2 respectively
Mouth is connected, and the remaining a port of the first Ethernet switching chip 1 connects gigabit Ethernet physical chip by RGMII interface
3, gigabit Ethernet physical chip 3 is connected to traditional RJ45 connector 4.Gigabit Ethernet physical chip 3 is by signal
Parsing conversion is carried out, realizes the communication of intermodule, RJ45 connector 4 can be with the processor module of developer or the net of ECU module
Mouth is connected, to make developer that particularly simple existing equipment is linked into vehicle-mounted ethernet network.By be arranged it is multiple with
Too net exchange chip, so that can be carried out data transmission and exchange between any two port.
Remaining four ports of second Ethernet switching chip 2 are extendable to different function block according to actual needs.One
In a embodiment, by remaining four ports of the second Ethernet switching chip 2 one of them by RGMII interface and gigabit with
Too net physical chip 3 is connected, and gigabit Ethernet physical chip 3 is connected to traditional RJ45 connector 4, and other three
Port is connected by MII, RMII or RGMII interface with ethernet physical layer chip 5, and is connected to dedicated onboard connector 6
On, onboard connector 6 externally can connect camera, the radar, all kinds of biographies for supporting the vehicle-mounted Ethernet interface of BroadR-Reach
The equipment such as sensor and display screen, ethernet physical layer chip 5 are vehicular applications such as vehicle-mounted camera, DAS (Driver Assistant System) and vehicle-mounted
Backbone network has done power consumption and cost optimization.In another embodiment, wherein a piece of will connect with the second Ethernet switching chip 2
The ethernet physical layer chip 5 connect is substituted for MCU chip 7, and is connected on USB interface 8, and by USB interface 8, developer can
Test platform is developed so that PC is very easily connected into vehicle-mounted Ethernet, and MCU chip 7 is programmed.MCU chip 7 passes through SPI
Bus (not shown) can configure Ethernet switching chip, and for different application scenarios, developer be can be set not
Same exchanging policy.MCU chip 7 can also pass through MDIO interface (not shown) and gigabit Ethernet physical chip 3 and ether
Net physical chip 5 carries out data transmission, communicates, and can configure to ethernet physical layer chip, read-write register, setting
The operating mode of ethernet physical layer chip checks the working condition of ethernet physical layer chip.
Further, which is preferably YT8010-A chip, is independent research
The vehicle-mounted ethernet PHY transceiver of single-chip, support 100Mbps single pair twisted pair BroadR-Reach standard, such as Fig. 2 institute
Show, is the peripheral circuit block diagram of ethernet physical layer chip 5, MII, RMII and RGMII interface specification is supported, specifically, ether
Net physical chip 5 is connected by MII/RMII/RGMII interface with MAC, ethernet physical layer chip 5 and onboard connector 6
Between be provided with ESD protection circuit 100, ESD protection circuit 100 includes two signal lines 12, every signal line string
It is associated with common mode choke 10 and capacitance 11, it is preferred that electrostatic protection chip 9 is also added in ESD protection circuit,
The pin TXP and pin TXN of ethernet physical layer chip 5 are connected with electrostatic protection chip 9 respectively by signal wire 12, are protected
Chip 9 is connected to onboard connector 6 by common mode choke 10 and capacitance 11, and common mode choke 10 being capable of filtering common mode
Electric current directly can block the flip-flop in signal every capacitor 11.Circuit between capacitance 11 and onboard connector 6 is set
Have to ground resistance 13 and capacitor 14, by the way that common-mode signal is terminated, interface be coupled to onboard connector 6, it is final to be grounded,
Common mode current flows into the earth, plays the role of electrostatic divided current.
The utility model has the beneficial effects that using BroadR-Reach technology, can with the unshielded twisted pair of single pair into
The transmission of row signal, transmission speed is faster.Ethernet physical layer chip supports 100Mbps single pair twisted pair BroadR-Reach mark
Standard supports MII, RMII and RGMII interface specification, by ethernet physical layer chip collocation Ethernet switching chip, constructs
The network simulating environment of one vehicle-mounted Ethernet can be carried out the transmission and friendship of data between this platform any two port
It changes, facilitates developer to carry out the assessment test and verification of software and hardware before the project implementation, when so as to shorten hardware and software development
Between, development efficiency is promoted, development cost is saved.
It should be pointed out that above-mentioned preferred embodiment is only to illustrate the technical ideas and features of the present invention, purpose
It is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly, this reality can not be limited with this
With novel protection scope.All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover in this reality
Within novel protection scope.
Claims (9)
1. a kind of vehicle-mounted Ethernet develops test platform, it is characterised in that: the exploitation test platform is handed over including the first Ethernet
Change chip (1) with communicate at least one second Ethernet switching chip (2) being connected, the second Ethernet switching chip (2)
It is communicated to connect with ethernet physical layer chip (5).
2. vehicle-mounted Ethernet develops test platform according to claim 1, it is characterised in that: the second Ethernet exchanging core
Piece (2) is connect with MCU chip (7), and the MCU chip (7) is connected to USB interface (8).
3. vehicle-mounted Ethernet develops test platform according to claim 1, it is characterised in that: the ethernet physical layer chip
(5) it is connect with onboard connector (6).
4. vehicle-mounted Ethernet develops test platform according to claim 3, it is characterised in that: the ethernet physical layer chip
(5) it is provided between onboard connector (6) ESD protection circuit (100).
5. vehicle-mounted Ethernet develops test platform according to claim 4, it is characterised in that: the ESD protection circuit
It (100) include the common mode choke (10) and capacitance (11) being connected on signal wire (12), the ethernet physical layer core
TXP pin, the TXN pin of piece (5) are connect with the common mode choke (10) and capacitance (11) respectively.
6. vehicle-mounted Ethernet develops test platform according to claim 5, it is characterised in that: the common mode choke (10) and
Capacitance (11) cooperates to the flip-flop in filtering common mode electric current and disabling signal jointly.
7. vehicle-mounted Ethernet develops test platform according to claim 5, it is characterised in that: also set on the signal wire (12)
It is equipped with electrostatic protection chip (9).
8. vehicle-mounted Ethernet develops test platform according to claim 1, it is characterised in that: the first Ethernet exchanging core
Piece (1) is connected with second Ethernet switching chip (2) by the port RGMII.
9. vehicle-mounted Ethernet develops test platform according to claim 1, it is characterised in that: first, second Ethernet
Exchange chip (1,2) is electrically connected with gigabit Ethernet physical chip (3), and RJ45 connector (4) passes through the gigabit Ethernet
Physical chip (3) is connect with the first, second Ethernet switching chip (1,2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821138768.5U CN208656791U (en) | 2018-07-18 | 2018-07-18 | A kind of vehicle-mounted Ethernet exploitation test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821138768.5U CN208656791U (en) | 2018-07-18 | 2018-07-18 | A kind of vehicle-mounted Ethernet exploitation test platform |
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| Publication Number | Publication Date |
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| CN208656791U true CN208656791U (en) | 2019-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821138768.5U Active CN208656791U (en) | 2018-07-18 | 2018-07-18 | A kind of vehicle-mounted Ethernet exploitation test platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912784A (en) * | 2019-12-20 | 2020-03-24 | 上海仁童电子科技有限公司 | Ethernet bus network test equipment |
| WO2023030389A1 (en) * | 2021-09-03 | 2023-03-09 | 北京车和家信息技术有限公司 | Vehicle-mounted ethernet conversion data cable |
-
2018
- 2018-07-18 CN CN201821138768.5U patent/CN208656791U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912784A (en) * | 2019-12-20 | 2020-03-24 | 上海仁童电子科技有限公司 | Ethernet bus network test equipment |
| WO2023030389A1 (en) * | 2021-09-03 | 2023-03-09 | 北京车和家信息技术有限公司 | Vehicle-mounted ethernet conversion data cable |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Kolding road high tech Zone of Suzhou City, Jiangsu province 215000 No. 78 Building No. 4 Room 201 Patentee after: Suzhou Yutai Microelectronics Co., Ltd Address before: Kolding road high tech Zone of Suzhou City, Jiangsu province 215000 No. 78 Building No. 4 Room 201 Patentee before: SUZHOU YUTAI CHETONG ELECTRONIC TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 201, building 4, No.78, Keling Road, high tech Zone, Suzhou City, Jiangsu Province Patentee after: Yutai Microelectronics Co.,Ltd. Address before: Room 201, building 4, No.78, Keling Road, high tech Zone, Suzhou City, Jiangsu Province Patentee before: Suzhou Yutai Microelectronics Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |