Rear Light Antenna Integration for Universal Bicycle Theft Tracking
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Solution Overview
Problem
Existing anti-theft alarm systems for e-bikes are limited by their electrical connection to the traction battery, making them specific to certain e-bike types and non-functional when the battery is discharged, and lack user-invisible installation options.
Innovation Solution
A rear light or reflector with integrated antenna, allowing for easy installation on any bicycle or e-bike, featuring a housing with a transparent front surface for light reflection and an integrated antenna that is either visible or hidden within the housing, along with positive locking elements for secure attachment to the mudguard, and a theft monitoring system using satellite-based positioning and radio communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna is placed on the outer surface of the rear light housing, then radio communication function is ensured, but the antenna becomes visible and aesthetically unpleasant
Solution Approach 1:
The antenna is integrated within the rear light housing structure, nesting the radio communication component inside the aesthetic housing. This allows the antenna to function while remaining hidden from view, resolving the contradiction between ensuring radio communication and maintaining aesthetic appearance.
Solution Approach 2:
The rear light housing serves multiple functions: it protects the light source, provides structural mounting for the reflector, and simultaneously houses the antenna for radio communication. This multi-functionality eliminates the need for a separate antenna housing, achieving both aesthetic and functional requirements.
2Reliability
If the anti-theft alarm system is electrically connected to the traction battery, then the system can function with sufficient power, but the system becomes specific to certain e-bike types and cannot be universally installed
Solution Approach 1:
The anti-theft alarm system is divided into separate functional modules: a control unit, a positioning unit with antenna, and a light/reflector component. This segmentation allows each module to be independently installed and configured, enabling universal installation on different e-bike types without requiring specific electrical connections to the traction battery.
Solution Approach 2:
The patent introduces an intermediary power supply unit that can be charged from the traction battery but operates independently. This intermediary unit provides power to the anti-theft system without requiring direct electrical integration with the e-bike's drivetrain, enabling universal compatibility while maintaining sufficient power for system functionality.
3Shape
If the antenna is integrated into the housing, then the antenna is hidden and aesthetic appearance is improved, but the housing must allow radio waves to pass through
Solution Approach 1:
The housing is designed with different properties in different regions: the front surface is opaque for aesthetic purposes and light protection, while specific portions of the housing structure contain antenna elements that allow radio wave transmission. This local differentiation of material properties resolves the contradiction between aesthetics and radio communication functionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables universal installation and operation of the theft warning system without visible antennas, secure attachment, and effective theft detection through satellite positioning and radio communication, with battery charging from traction or photovoltaic sources.
Implementation Method 1
at least one reflector element, in particular a retroreflector element, arranged transparent to the front surface for reflection, in particular retroreflection, of the light incident on the front surface
Implementation Method 2
the rear light and/or the reflector includes an antenna... radio waves can pass through the housing as electromagnetic radiation to the antenna
Data Source
Figure 1
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Figure 4
AI summary
Theft warning system (34) for a bicycle (1) or e-bike (1) or e-scooter, comprising as components a battery (35), a position unit (36) for satellite-based determination of the position, a radio communication unit (38) for transmitting and/or receiving data via a radio connection, an antenna (24) for the position unit (38) and/or the radio communication unit (38), at least one component (10, 11, 12) with a housing (21), wherein the at least one component (10, 11, 12) of the theft warning system (34) with the housing (21) comprises at least one positive locking element (27), in particular several positive locking elements (27), for positive locking and/or force-locking fixation of the at least one component (10, 11, 12) to a mudguard (9) of the bicycle (1) or e-bike (1) or e-scooter.