Implementation of an availability module for LIDAR sensors in autonomous vehicles – so that the vehicle “sees” where it is heading.

As a technology partner of the automotive industry AUTOSAR, comlet Verteilte Systeme GmbH presents developments in the area of Advanced Driver Assistance Systems, ADAS.

In connection with autonomous driving, sensor technology is a key technology. The vehicle`s surroundings can only be accurately identified if it works reliably. As a highly specialized engineering service provider in the area of embedded systems, comlet has designed and implemented a sensor availability module.

The module is responsible for evaluating the sensor data, detecting failure situations and controlling the availability measures, in order to minimize external influences on the sensors.

The availability of the LIDAR-based detection functions of >95% must be guaranteed even in poor environmental conditions. The implemented corrective actions rely on cleaning and heating systems, that must be controlled depending on external influences and on the situation. In case a contamination is detected, the cleaning intensity related with the type and the intensity of the contamination is activated.

In order to create a concept, the requirements elicitation was based on existing specifications and in coordination with various stakeholders. The concept was enriched with UML diagrams for better understanding. At this early stage, the testability of the requirements and subfunctions was considered, which leads to great synergies in the context of quality assurance.

After coordinating the basic concept with the customer, all requirements were analyzed again and all dependencies on other models were considered. The results became part the detailed concept.

Interfaces to other modules were implemented with Vector DaVinci, which generates AUTOSAR code templates. The software was developed in C. XCP & DLT component tracing was implemented with CANape and other proprietary tools. comlet’s tests were carried out on several levels. The component and integration tests were conducted on the basis of simulations. The system tests were carried out as usual on the HIL and in the vehicle.

Integration of test engineering and validation in early stages

Once again, the strengths of the approach to consider testability at an early stage are evident. Issues and ambiguities are discovered in early project phases. Particularly in complex a software, where many components are involved to accomplish a specific task, the benefit of this approach become apparent. By considering the test coverage or striving to maximize the amount of automated tests on different levels, great efficiency potential is exploited.

You can find more information about comlet at and our reference projects at


comlet Verteilte Systeme GmbH delivers cross-sector embedded solutions for complex control systems

comlet Verteilte Systeme GmbH has been a partner of the automotive industry for almost 20 years developing the latest system generations together with well-known OEMs. “Especially in complex project setups with a heterogeneous supply chain structure, we can contribute our expertise.” says Managing Director Steffen Fromm. “This is where we can apply our know how in connected devices and distributed communication.” In today’s vehicles, data from various sources of information must be available to many applications. Data from the vehicle electrical system, but also from cloud services, is processed by navigation, engine control, lane keeping and distance warning systems, parking assist, traffic sign recognition or head-up displays.

The extensive expertise in the development of distributed systems is adaptable cross industrial. In addition to the automotive sector, comlet also addresses customers from the areas of commercial vehicles, smart home and industry 4.0.