ADAS/AD is a complex domain. To ensure the safety of ADAS/AD systems, using recorded real-world data is an essential step in the respective homologation and release strategies. After all, contrary to synthetic simulation data, the level of accuracy of and fidelity in recorded real-world data can simply not be exceeded. dSPACE offers several solutions that use the replay of recorded data, also referred to as data replay, data reprocessing, data re-simulation, and data playback, for the validation and testing of ADAS/AD features, perception, sensors, and sensor fusion components. Data replay brings safe ADAS/AD systems to the road. 

Replay Accuracy

The aim of data replay is to reproduce recorded data in exactly the same way in which the (V-)ECU would have received it if it was used in a vehicle on the road. dSPACE understands this challenge very well and offers best-in-class solutions, allowing you to focus on innovations that set you apart from your competition. Simply leave the rest to dSPACE.

Modularity

Built with the fast dynamics of ADAS/AD projects in mind, each dSPACE solution consists of modular blocks that can be rapidly and efficiently adapted and expanded. The modular system architecture gives you a head start over your competition, as you can expand the system later on, for example, once the capacity of the initial system is reached or once a completely new feature is required. 

Comprehensiveness

Validating ADAS/AD systems by means of data replay is a demanding process rather than a simple test step. After all, expansive software data replay test campaigns are required for each software update, and specific hardware data replay test campaigns have to be completed for the main scenarios of interest. And we haven’t even mentioned test and data management and the corresponding IT infrastructure. dSPACE recognizes these challenges and offers the right solution for each of them, whether we tap directly into our own dSPACE expertise or work with our comprehensive partner ecosystem. You can choose the best fit for your company from the market's most comprehensive portfolio. 

Optimized Total Cost of Ownership

dSPACE looks at the entire test chain from beginning to end to assess and optimize what you will really end up paying throughout the lifetime of a solution. dSPACE stands for full transparency. We avoid hidden costs that result from a lack of essential features that would make accurate testing infeasible and we actively seek to decrease computation/usage costs. In addition, with our extensive know-how in closed-loop testing, all dSPACE systems for data replay can be used again as closed-loop systems with little to no effort. 

挑战

实现高精度和真实感是一项艰巨的任务。我们必须保证被测系统(SUT)馈送的数据就像是在实际驾驶测试过程中获得的一样。异构数据流(包括传感器和网络/总线数据)在数据回放过程中必须同步,尽管它们的安装包/消息可能不同。此外,数据流的绝对数量正在稳步增长。对记录数据进行复杂的实时调整以通过SUT中的端到端加密和安全检查也是一个挑战。此外,有效地扩展测试规模,以持续进行数百万公里的驾驶测试,并协调多个测试系统是至关重要的。

dSPACE数据回放解决方案

dSPACE为每个数据回放用例提供专用解决方案,无论SUT是物理可用(HIL)还是仍处于早期软件开发阶段(SIL);它是一个简单的传感器组件还是一个复杂的自动驾驶中央计算平台,都可以得到解决。

所有的dSPACE数据回放解决方案确保在最小的抖动内实现同步传感器和总线数据摄取。此外,通过模块化方法,通过系统升级以适应新的带宽要求是很容易的。同时也保证了纯软件环境(SIL)与物理SUT(HIL)之间以及闭环与数据回放测试之间的无缝过渡和互操作性。利用这种互操作性,我们可以轻松地将带有闭环合成数据的SUT带入记录数据的初始状态,即数据回放过程开始的地方。

dSPACE数据回放解决方案支持广泛的标准和定制化总线和传感器接口。此外,使用dSPACE实时系统可确保记录的数据与安全性和时间信息的实时适配,以及对回放数据的实时监控和操作。

Some Typical Examples of Tested Functions.

应用案例

以下用例显示了一些典型的数据回放任务以及适用于每个任务的dSPACE解决方案:

传感器组件

使用记录的真实数据来验证摄像头、激光雷达和雷达传感器在硬件(HIL)环境中的行为

ADAS/AD 平台(ECU)

在硬件(HIL)环境中,使用记录的真实数据,在ADAS/AD计算平台上测试感知和传感器融合功能

虚拟ECU和软件组件

在目标部署之前,在全软件环境(SIL)中测试感知和传感器融合功能

  • Data Replay 产品信息, PDF, 英語, 1219 KB
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