Vehicle Positioning Layout With Remote Inertial Sensor Housing
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Solution Overview
Problem
Existing position determining arrangements for vehicles require significant installation space due to the need for a main housing to accommodate both the processing and inertial sensors, limiting their compact integration and precision in navigation satellite-based positioning.
Innovation Solution
The position determining arrangement separates the first housing containing the computing unit and processing device from a second housing with the inertial sensor, eliminating direct mechanical connection and allowing for a compact design, with the inertial sensor optionally housed in a ceramic enclosure for temperature protection, and utilizing a field bus or radio connection for communication, and integrating components with existing control units to reduce space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the computing unit, processing device, and inertial sensor are arranged in a single main housing, then the structural integration is simplified, but the installation space required is increased
Solution Approach 1:
The position determining arrangement is divided into two separate housings: a first housing containing the computing unit and processing device, and a second housing containing the inertial sensor. This segmentation allows each component to be housed independently, reducing the overall installation space while maintaining functional integration through wireless communication.
Solution Approach 2:
The inertial sensor is extracted from the main housing structure and placed in a separate second housing. This extraction eliminates the need for a large main housing to accommodate all components, thereby reducing the total installation space while preserving the system's integrated functionality.
2Stability of the object's composition
If the first housing and second housing are directly mechanically connected, then the structural stability is improved, but the design flexibility and compactness are reduced
Solution Approach 1:
Wireless communication (field bus or radio connection) serves as an intermediary between the first housing and second housing, replacing direct mechanical connections. This allows the housings to be spatially separated and arranged flexibly within the vehicle while maintaining stable data and power transmission, thus improving both compactness and design flexibility.
Solution Approach 2:
The mechanical connection system between housings is replaced with an electromagnetic field-based communication system. This substitution eliminates the constraints of mechanical coupling, enabling greater spatial flexibility and more compact arrangements of the housings within the vehicle interior.
3Device complexity
If more components are integrated into a single housing, then the number of components is reduced, but the precision of navigation satellite signal processing is compromised due to interference
Solution Approach 1:
The system is segmented into two functionally distinct housings: the first housing for computing and signal processing, and the second housing for inertial sensing. This segmentation isolates sensitive navigation satellite signal processing from potential electromagnetic interference generated by inertial sensors, thereby maintaining high measurement precision while keeping the overall component count manageable.
Solution Approach 2:
Different housing environments are created to optimize local conditions for each component type. The first housing is optimized for electromagnetic signal processing with appropriate shielding and grounding, while the second housing is optimized for inertial sensor stability. This local quality differentiation ensures high precision in navigation satellite signal processing without requiring excessive component integration.
Data Source
AI summary
A position determining arrangement for a vehicle includes: a receiving device, in particular an antenna, designed to receive a navigation satellite signal from a navigation satellite; a processing device designed to provide a first signal depending on the received navigation satellite signal, the first signal describing a navigation satellite signal-based position of the receiving device in a coordinate system; at least one inertial sensor designed to detect an acceleration and/or a rate of rotation; a computing unit designed to determine an adapted position of the receiving device in the coordinate system depending on the first signal and the detected acceleration and/or rate of rotation; and a first housing in which at least the computing unit is located. The position determining arrangement includes a second housing independent of and spatially separated from the first housing, and the inertial sensor is located in the second housing.