Xiaoyi and you talk about how to realize c-v2x HIL test in v2x test series (2022 version)

In us 2021 Year of V2X In the theme sharing series , Introduced to you * V2X Application scenarios 、* V2X The simulation test 、 And an article about *V2X HIL test , In stages V2X Business knowledge popularization , Everyone must remember “ new ”.（ Pay attention to Yixing technology official account now , Search keywords V2X）

Today Ni , We are here to upgrade science popularization , This paper introduces the... That can meet the needs of network testing at the same time V2X HIL Test plan , Provide customers with more choices .

Catalog

1. What is? V2X

2.V2X Standard application scenarios

3.V2X Application scenario simulation diagram

4. What is? V2X HIL test

5. Yixing Technology C-V2X HIL The test system

01

What is? V2X？

V2X Definition , namely Vehicle to Everything, Everything in the car . Cars and cars V2V、 Car and road V2I、 Cars and people V2P, Car and cloud V2N, Can be connected with each other , Form a strong information network circle .

A car in the transportation network , Will no longer be an independent individual . It can obtain its own driving information and traffic environment information within the range of sight distance through advanced sensors , You can also use V2X Technology obtains the perception range beyond the line of sight , Including other vehicle states in the traffic environment 、 Traffic signs 、 Signal lights and road information , Let the driver know the driving environment comprehensively and timely , More safe and efficient driving .

chart 1 Vehicle wireless communication technology

02

V2X Standard application scenarios

chart 2 CSAE The first phase V2X scene

03

V2X Application scenario simulation diagram  

chart 3 FCW scene

chart 4 LTA scene

chart 5 VRUCW scene

chart 6 RLVW scene

For more scenes to unlock, please click 《V2X Test series ——V2X Application scenario simulation and development process 》

04

What is? V2X HIL test

V2X namely Vehicle-to-Everything,HIL namely Hardware-in-Loop.V2X HIL Testing is hardware in the loop V2X Test Research , Different from pure virtual simulation ,HIL System testing is based on a specific hardware platform , Meet certain real-time .

chart 7  Reference test development V technological process

05

Yixing Technology C-V2X HIL The test system

at present , our C-V2X HIL The system is desktop HIL The test system , Support expansion to cabinet , And later extended to road testing , Mainly for the test integration of the application layer .

complete C-V2X HIL The frame diagram of the test system ：

chart 8 C-V2X HIL System architecture

among ,V2X HIL The system is first created through the upper simulation platform V2X Application scenarios , Generate HV and RV、RSU data . Then based on professional GNSS Simulator and PC5 Signal simulation platform , Process and generate... In a simulated real environment GNSS Navigation information and PC5 Empty message . meanwhile , adopt VECTOR Of CAN/ETH card , take HV The body data of is sent to the vehicle to be tested OBU, Realize the final open-loop application test .

C-V2X HIL What software and hardware resources does the test system include ？

1 Application layer scene simulation platform

Based on mature commercial simulation software platform , such as Prescan、DYNA4、VTD、CarMaker etc. , Implementation is based on T/CSAE 53-2020 Described in the V2X Typical scenario （ Support other scenarios customized by customers ）, The scene includes self driving 、 Distant vehicle model , And the road 、 Environment and traffic flow .

chart 9 V2V

chart 10 V2I

2 Protocol stack simulation platform

Rely on mature protocol stack providers , Will come from V2X The car in the simulation scene 、 End of road data , Packed according to the national standard BSM、SPAT、MAP、RSI Equal format V2X message .

3C-V2X PC5 Message simulation processing module

be based on Keysight Network comprehensive tester or other mature platforms , Realization PC5 Signal simulation .E7515B Integrated test instrument support 4G、5G Signal test , Used for RF signal test in the system , At the same time, it supports the testing of the physical layer , Powerful .

  chart 11 V2X GNSS And PC5 Signal simulation

4GNSS Analog unit

be based on GSG Of GNSS Simulation platform , Support the output of various formats GNSS Simulated signal , Include GPS、BeiDou、Galileo、GLONASS And other systems , Also supports static GNSS The signal 、GNSS Trajectory curve input 、 dynamic GNSS Input and other modes GNSS Signal simulation .

at present , our V2X HIL The system testing solution is based on GSG Of RSG Pattern , In this mode GSG Real time GNSS Signal simulation . Among them GNSS The signal input source is the real-time data from the simulation platform , It conforms to the signal source in the actual test .

5C-V2X HIL System test plan

chart 12 V2X HIL Test plan

Here is what we updated this year C-V2X HIL Commissioning of tests demo： 

Wechat video Number , Search for ： Yixing Technology You can watch the video

You can also pass It's German technology KEYSIGHT This article knows more about relevant knowledge *《 Science popularization to , A detailed explanation V2X HIL test 》

So that's us 2022 year V2X An updated version of topic sharing , I hope it will help and enlighten everyone .

Last ,V2X Technology testing and research has a long way to go ,EPT Willing and able to support customers from pure virtual simulation to HIL Real time test and road test V2X Full stack solution . Welcome to leave a message for consultation , We will try our best to provide you with the best advice and solutions .