Window Lens RF Antenna Integration for Concealed Defrosting Cameras
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Solution Overview
Problem
Surveillance cameras with external antennas are less concealed and more prone to environmental issues like fogging or frosting in low temperatures, affecting their structural strength and operational efficiency.
Innovation Solution
A camera device design that integrates a radio frequency circuit and heating drive circuit within a housing, using a window lens with a transparent radiation medium to transmit and receive signals, eliminating the need for an external antenna and providing defrosting capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external antenna is used for wireless communication, then communication function is achieved, but concealment is reduced and structural strength is affected
Solution Approach 1:
The patent combines the antenna function with the window lens by integrating a transparent radiation medium into the lens structure. This merging allows the window lens to serve dual purposes: optical transmission for imaging and radio frequency transmission for wireless communication, thereby achieving concealment while maintaining communication functionality.
Solution Approach 2:
The window lens is designed to perform multiple functions simultaneously: it acts as an optical lens for video imaging, a radio frequency antenna for wireless communication, and a heating element for defogging/defrosting. This multi-functionality eliminates the need for separate external antennas and heating components, improving concealment and structural integrity.
2Reliability
If an external antenna is used for wireless communication, then communication function is achieved, but structural strength is affected
Solution Approach 1:
The antenna function is merged into the window lens structure through the transparent radiation medium. This integration eliminates the need for separate external antenna components and their associated mounting structures (holes, connectors), thereby preserving the structural strength and integrity of the camera housing.
3Reliability
If heating is applied to prevent fogging, then lens visibility is maintained, but energy consumption increases
Solution Approach 1:
The transparent radiation medium in the window lens serves multiple functions: it acts as an antenna for radio frequency transmission and simultaneously as a heating element for defogging/defrosting. By integrating these functions into a single component, the patent reduces the need for separate heating components and enables energy-efficient operation through shared functionality.
Solution Approach 2:
The transparent radiation medium generates heat through its own electrical resistance when current passes through it, enabling the window lens to heat itself for defogging and defrosting purposes. This self-service heating mechanism eliminates the need for separate heating components and reduces overall system energy consumption.
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
The solution enhances concealment and operational reliability by allowing data exchange without external antennas and effectively prevents fogging or frosting, maintaining good light transmittance and reducing manufacturing and usage costs.
Implementation Method 1
the window lens is provided with a first terminal; the radio frequency circuit is connected to the communications module, and the radio frequency circuit and the heating drive circuit are provided with a common second terminal; and the first terminal is electrically connected to the second terminal, to form a radio frequency channel including the communications module, the radio frequency circuit, and the window lens
Implementation Method 2
the heating drive circuit heats the window lens, to solve a problem that the window lens of the camera device is prone to get foggy or frosty when ambient humidity is comparatively high or ambient temperature changes greatly
Data Source
AI summary
A camera device including a housing, and a radio frequency circuit, a communications module, and a heating drive circuit that are disposed in the housing. The housing is provided with a window panel, and the window panel is provided with a hole to form a window. The window is provided with a window lens capable of receiving and transmitting a radio frequency signal, and the window lens is provided with a first terminal. The radio frequency circuit is connected to the communications module, and the radio frequency circuit and the heating drive circuit are provided with a common second terminal. The first terminal is electrically connected to the second terminal, to form a radio frequency channel including the communications module, the radio frequency circuit, and the window lens, and a heating channel including the heating drive circuit and the window lens.