Loop Antenna Non-Contact Power Transmission for Surveillance Camera
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing imaging devices with variable optical axes face challenges in transmitting high-quality image data due to noise and increased running costs, particularly in outdoor surveillance cameras where the large diameter of the tilt rotation shaft necessitates a larger waterproof sealing member, leading to increased friction and motor size.
Innovation Solution
The imaging device employs a non-contact communication method using loop antennas for power and data transmission between the pan and tilt portions, reducing noise and eliminating the need for a large diameter twisted line, thereby minimizing the size and cost of the tilt motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a contact-type slip ring is used for power and data transmission in the pan portion, then power and data can be transmitted reliably, but the device complexity and running cost increase
Solution Approach 1:
The patent replaces the contact-type slip ring (mechanical system) with a non-contact communication system using loop antennas and electromagnetic coupling. This substitution eliminates mechanical wear and contact issues while reducing device complexity, directly resolving the contradiction between reliability and complexity in the pan portion.
2Reliability
If a twisted line is inserted into the tilt portion for power and data transmission, then power and data can be transmitted, but the tilt rotation shaft diameter increases requiring a larger waterproof sealing member and increasing friction
Solution Approach 1:
The patent replaces the twisted line (mechanical cable) with a non-contact communication system using loop antennas. This eliminates the need for a large-diameter tilt rotation shaft and large waterproof sealing members, directly reducing friction and the harmful factors associated with mechanical contact and rotation.
3Reliability
If a large diameter tilt rotation shaft is used to accommodate twisted line, then power and data transmission is possible, but the waterproof sealing member size and motor size increase leading to higher running cost
Solution Approach 1:
The patent replaces the mechanical twisted line transmission system with a non-contact electromagnetic coupling system using loop antennas. This substitution allows for a smaller tilt rotation shaft and smaller waterproof sealing member, which directly reduces the motor size and running cost while maintaining power and data transmission capability.
4Device complexity
If non-contact communication using loop antennas is used, then device complexity and running cost are reduced, but the transmission amount of information and reliability were previously insufficient
Solution Approach 1:
The patent merges the power transmission and data communication functions into a single non-contact communication system using loop antennas. By combining these functions and optimizing the electromagnetic coupling between the main-body-side and tilt-side loop antennas, the system achieves both reduced device complexity and improved information transmission reliability simultaneously.
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
This configuration enhances information transmission reliability and reduces running costs by downsizing the tilt motor and camera components while maintaining waterproof functionality without a dome cover.
Implementation Method 1
a main-body-side loop antenna that is fixed to the main body portion; a tilt-side loop antenna that is fixed to the tilt portion; and a relay loop antenna that is fixed to the pan portion
Data Source
AI summary
To suppress an increase in a running cost while improving a transmission amount of information and reliability. Surveillance camera includes main body portion in which power supply board and data processing board are provided; pan portion that rotates in a pan direction with respect to main body portion; tilt portion that is provided with camera and rotates in a tilt direction with respect to pan portion; main-body-side loop antenna that is fixed to main body portion; tilt-side loop antenna that is fixed to tilt portion; and relay loop antenna that is fixed to pan portion and in which main-body-opposite-side loop portion opposite to main-body-side loop antenna and tilt-opposite-side loop portion opposite to tilt-side loop antenna are connected to each other in series.