Sensor Communication Link Segmentation for Latency Reduction
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Solution Overview
Problem
Existing communication systems between sensors and control units, especially in touch-sensitive devices, experience latency and signal interference at greater distances, affecting reliability due to the need for data transmission over wired or wireless connections.
Innovation Solution
A device and method that utilize a communication link with separate paths for data transmission and signaling, featuring a receiver component with a functional block for signaling and a transmitter component with a sensor interface, allowing for undisturbed and tap-proof communication, particularly suitable for motor vehicle applications, using coaxial or optical links to reduce latency and improve accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If data transmission is performed over wired or wireless connections at greater distances between control unit and sensor, then communication range is extended, but latency and signal tampering increase affecting reliability
Solution Approach 1:
The communication system is segmented into two separate paths: one dedicated for data transmission and another for signaling. This segmentation allows each path to be optimized independently, with the signaling path providing control and coordination functions that reduce latency and improve reliability of data transmission over extended distances.
Solution Approach 2:
A separate signaling connection acts as an intermediary between the control unit and sensor. This signaling path enables coordinated communication that reduces latency and prevents signal tampering, allowing reliable operation at greater distances without compromising data integrity.
2Reliability
If separate communication paths are used for data transmission and signaling, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The signaling connection serves multiple functions: it provides control signals, status information, and coordination for data transmission. By making the signaling path multi-functional, the system achieves improved reliability without proportionally increasing complexity, as a single signaling channel handles multiple communication tasks.
3Loss of time
If data transmission amount is reduced over the communication link, then latency is reduced and reliability is improved, but functionality is limited
Solution Approach 1:
Communication functions are segmented into data transmission and signaling paths. The signaling path handles control and coordination with minimal data, while the data path handles payload transmission. This segmentation reduces latency for time-critical signaling while maintaining full functionality through coordinated operation of both paths.
Solution Approach 2:
The signaling connection acts as an intermediary that coordinates data transmission activities. By managing transmission schedules and control signals separately, the system reduces latency for control operations while maintaining full communication functionality through the coordinated interaction between signaling and data paths.
Data Source
AI summary
The described device is used for communicating with a sensor, especially in the form of a touch-sensitive input and/or output device, e.g. a touch screen, via a control unit that can be controlled using a remote controller. A functional block that performs signaling to communicate with the control unit is provided in a receiver component which is or can be connected to a transmitter component via a communication link.