Network Switch Sensor Configuration via Service Messages
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Solution Overview
Problem
In the automotive industry, multiple sensors of the same or different types installed in vehicles often require individual coding and configuration due to their varying positions and functional parameters, which is a time-consuming and labor-intensive process, especially when connected directly to a control unit via separate connections.
Innovation Solution
A method and device for coupling a sensor to a control device via a network switch, utilizing a predetermined communication sequence that includes transmitting service search queries and service provision messages to configure the sensor, allowing for automated identification and configuration without the need for pin coding or direct connections to the control unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are connected directly to the control unit via separate connections, then the sensor can be unambiguously identified and coded, but the configuration process becomes time-consuming and labor-intensive
Solution Approach 1:
A network switch is introduced as an intermediary device between the sensor and the control unit. The network switch receives service search queries from sensors and forwards service provision messages from the control unit, enabling automated identification and configuration without direct sensor-to-control-unit connections, thus reducing configuration time while maintaining identification accuracy
Solution Approach 2:
Sensors autonomously initiate the configuration process by transmitting service search queries to the network switch. The sensors automatically receive service provision messages containing their configuration data and apply these settings without requiring manual intervention or pin coding, making the configuration process self-service oriented and time-efficient
2Productivity
If multiple sensors of the same type are installed at the same time, then productivity is improved, but individual coding and configuration becomes necessary due to different positions and functional parameters
Solution Approach 1:
The network switch provides universal functionality by serving multiple sensors of the same type simultaneously. It receives service search queries from any sensor and forwards appropriate service provision messages, enabling batch configuration of multiple sensors without requiring individual manual coding, thus maintaining high productivity while simplifying the configuration process
Solution Approach 2:
The system implements feedback mechanisms where sensors transmit service search queries to inquire about available configurations. The network switch and control unit respond with service provision messages containing appropriate configuration data. This feedback loop enables automated adaptation to different sensor positions and functional parameters, maintaining ease of operation even when multiple sensors are installed simultaneously
3Reliability
If pin coding or tester intervention is used for teaching sensors, then the control unit can communicate with sensors, but the process requires manual intervention and is complex
Solution Approach 1:
The patent replaces mechanical pin coding systems with a communication-based service search and service provision mechanism. Instead of physically coding pins on cables to identify sensors, the system uses service search queries and service provision messages transmitted through the network switch, eliminating manual intervention and reducing configuration complexity while maintaining reliable sensor communication
Solution Approach 2:
The configuration process is segmented into distinct functional components: service search queries transmitted by sensors, service provision messages provided by the control unit through the network switch, and configuration application by the sensor. This segmentation allows each component to perform its specific function independently, reducing overall system complexity while ensuring reliable communication
Data Source
AI summary
A communication network for a vehicle includes a control device, a network switch and at least one sensor. The control device transmits at least one service provision message for configuring a sensor to a control interface of the network switch. The network switch outputs the service provision message at a sensor interface of the network switch that is associated with the service provision message. The sensor transmits at least one service search query to the sensor interface of the network switch, receives the service provision message from the sensor interface, and teaches a configuration by using the service provision message.