Monitoring Device Frequency Band Switching for Anti-Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bidirectional monitoring systems face issues with poor resistance to fading depth, anti-interference ability, and require specific installation conditions, leading to potential interference in data transmission between the background device and monitoring device, which can affect target object monitoring and first-aid operations.
Innovation Solution
A monitoring device and system that includes a control system assembly, digital-analog mixing assembly, and frequency band selection assembly, allowing for the transmission of signals over multiple frequency bands, enabling the selection of optimal frequency bands for signal transmission to improve timeliness and anti-interference capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a normal bidirectional monitoring system is used to reduce engineering installation, then the system can be deployed without antennas in each room, but the system has poor fading depth resistance, poor anti-interference ability, and high requirements for installation conditions
Solution Approach 1:
The system is divided into two parts: a background device with antenna deployed in a fixed location (e.g., elevator shaft) and monitoring devices distributed throughout the building. This segmentation allows the antenna to be strategically positioned for optimal signal coverage while monitoring devices can be installed without individual antennas, reducing installation complexity while maintaining reliability through the background device's robust antenna system
Solution Approach 2:
The background device acts as an intermediary between the monitoring devices and the external monitoring system. It receives signals from multiple monitoring devices and relays them to the monitoring center, providing a centralized communication hub that improves fading depth resistance and anti-interference ability through its dedicated antenna and signal processing capabilities
2Ease of operation
If a normal bidirectional monitoring system transmits data between background device and monitoring device, then bidirectional communication is achieved, but data transmission is prone to interference affecting monitoring and first-aid operations
Solution Approach 1:
The system dynamically switches between different frequency bands for data transmission. When interference is detected on one frequency band, the system automatically transitions to another frequency band, ensuring continuous and stable communication. This dynamic adaptation maintains bidirectional communication reliability under varying interference conditions
Solution Approach 2:
The system changes the frequency band parameter to avoid interference. By having multiple frequency bands available and switching between them based on signal quality, the system maintains stable data transmission despite interference on any single frequency band, ensuring reliable monitoring and first-aid operations
3Reliability
If multiple frequency bands are used for signal transmission, then anti-interference ability and timeliness are improved, but device complexity increases
Solution Approach 1:
Multiple frequency band processing functions (mixing, selection, switching) are merged into integrated circuit modules within the background device. This consolidation reduces the overall device complexity by eliminating the need for separate discrete components for each function, while still maintaining the capability to handle multiple frequency bands for improved anti-interference ability
Data Source
AI summary
This disclosure provides a monitoring device, a wireless communication device, and a control method. The monitoring device includes a control system assembly, a digital-analog mixing assembly, a frequency band selection assembly, and an antenna. The control system assembly is respectively connected with the digital-analog mixing assembly and the frequency band selection assembly; one end of the frequency band selection assembly is connected with the digital-analog mixing assembly through a channel of designated frequency band, and the other end of the frequency band selection assembly is connected with the antenna. The monitoring device can switch from a currently used frequency band to other frequency bands for signal transmission or use other frequency bands for simultaneous signal transmission, according to a signal transmission status of the currently used frequency band. Thus, the anti-interference ability of the monitoring device can be improved to reduce the error rate of signal transmission.