Automotive Sensor Housing Shield for Intrusion Resistance
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Solution Overview
Problem
Existing particulate matter sensors in motor vehicles lack sufficient resistance to intrusions of solid bodies and liquids, which can compromise their reliability and functionality.
Innovation Solution
The design incorporates protective shields around functional openings in the housing of the sensor, which are strategically positioned to prevent the entry of liquids and solids, including a drainage channel to divert flows and prevent retention, ensuring protection against both gravitational and flowing matter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If functional openings are provided in the housing for sensor operation, then the sensor can perform its detection function, but the housing becomes vulnerable to intrusions of solid bodies and liquids
Solution Approach 1:
A protective shield is introduced as an intermediary element between the functional opening and the electronic member. The shield selectively blocks solid bodies and liquids while allowing air and particulate matter to pass through, thus protecting the sensor without compromising its detection function. The shield acts as a mediator that filters harmful intrusions while maintaining operational requirements.
Solution Approach 2:
The protective shield is positioned locally at the functional opening rather than sealing the entire housing. This localized protection approach allows the sensor to maintain its detection function through the opening while providing targeted protection against intrusions at the specific vulnerable location. The shield's selective placement optimizes both functionality and protection.
2Object-affected harmful factors
If the opening is sealed to prevent intrusions, then resistance to solid bodies and liquids is improved, but the sensor cannot detect particulate matter
Solution Approach 1:
The protective shield functions as a porous or permeable structure that allows air and particulate matter to pass through while blocking larger solid bodies and liquids. This selective permeability enables the sensor to maintain its detection function by allowing access to particulate matter while providing protection against harmful intrusions that would compromise sensor reliability.
3Object-affected harmful factors
If protective shields are added to the housing, then resistance to intrusions is improved, but device complexity increases
Solution Approach 1:
The protective shield is merged with the housing structure, forming an integrated component rather than a separate附加 element. This integration reduces overall device complexity by combining the protection function with the existing housing, eliminating the need for additional separate protective components while maintaining effective intrusion resistance.
Data Source
AI summary
Electronic component, in particular a sensor (1), in particular for detecting particulate matter, comprising: an electronic member, a housing (2) in which the electronic member is placed, said housing (2) comprising at least one functional opening (3a; 3b; 3c), characterised in that at least one protective shield (6a, 6b) is arranged on the housing (2) in order to protect the electronic member from the intrusion of material into the housing (2), in particular fluids or solids, which could pass through the functional opening (3a, 3b, 3c).