针对目前家庭住宅人身财产的安全,设计了一种基于单片机为控制核心,通过全球移动通信系统(GSM,Global System For Mobile Communications)无线移动网络与公用电话网络,实现远程自动监控报警控制的系统。该设计是以GSM移动网络与公用电...针对目前家庭住宅人身财产的安全,设计了一种基于单片机为控制核心,通过全球移动通信系统(GSM,Global System For Mobile Communications)无线移动网络与公用电话网络,实现远程自动监控报警控制的系统。该设计是以GSM移动网络与公用电话网络为媒介,通过手机用户、电话用户实现对远程住宅设备的控制及信息采集。重点阐述了GSM模块、双音多频(DTMF,Dual Tone Multi Frequency)检测发生模块的硬件设计原理及应用。介绍了MT8880芯片与GSM模块的连接及实现原理。实际应用说明了该设计系统稳定、可靠、成本低廉。展开更多
Detecting microwave signals over a wide frequency range is endowed with numerous advantages as it enables simultaneous transmission of a large amount of information and access to more spectrum resources.This capabilit...Detecting microwave signals over a wide frequency range is endowed with numerous advantages as it enables simultaneous transmission of a large amount of information and access to more spectrum resources.This capability is crucial for applications such as microwave communication,remote sensing and radar.However,conventional microwave receiving systems are limited by amplifiers and band-pass filters that can only operate efficiently in a specific frequency range.Typically,these systems can only process signals within a three-fold frequency range,which limits the data transfer bandwidth of the microwave communication systems.Developing novel atom-integrated microwave sensors,for example,radio-frequency(RF)chip–coupled Rydberg atomic receiver,provides opportunities for a large working bandwidth of microwave sensing at the atomic level.In the current work,an ultrawide dual-band RF sensing scheme was demonstrated by spacedivision multiplexing two RF-chip-integrated atomic receiver modules.The system can simultaneously receive dual-band microwave signals that span a frequency range exceeding 6 octaves(300 MHz and 24 GHz).This work paves the way for multi-band microwave reception applications within an ultra-wide range by RF-chip-integrated Rydberg atomic sensor.展开更多
文摘针对目前家庭住宅人身财产的安全,设计了一种基于单片机为控制核心,通过全球移动通信系统(GSM,Global System For Mobile Communications)无线移动网络与公用电话网络,实现远程自动监控报警控制的系统。该设计是以GSM移动网络与公用电话网络为媒介,通过手机用户、电话用户实现对远程住宅设备的控制及信息采集。重点阐述了GSM模块、双音多频(DTMF,Dual Tone Multi Frequency)检测发生模块的硬件设计原理及应用。介绍了MT8880芯片与GSM模块的连接及实现原理。实际应用说明了该设计系统稳定、可靠、成本低廉。
基金supported by the National Key R&D Program of China(2022YFA1404002)the National Natural Science Foundation of China(Grant Nos.U20A20218,61525504,61722510,61435011)+1 种基金the Major Science and Technology Projects in Anhui Province(Grant No.202203a13010001)the National Natural Science Foundation of China(Grant No.11934013).
文摘Detecting microwave signals over a wide frequency range is endowed with numerous advantages as it enables simultaneous transmission of a large amount of information and access to more spectrum resources.This capability is crucial for applications such as microwave communication,remote sensing and radar.However,conventional microwave receiving systems are limited by amplifiers and band-pass filters that can only operate efficiently in a specific frequency range.Typically,these systems can only process signals within a three-fold frequency range,which limits the data transfer bandwidth of the microwave communication systems.Developing novel atom-integrated microwave sensors,for example,radio-frequency(RF)chip–coupled Rydberg atomic receiver,provides opportunities for a large working bandwidth of microwave sensing at the atomic level.In the current work,an ultrawide dual-band RF sensing scheme was demonstrated by spacedivision multiplexing two RF-chip-integrated atomic receiver modules.The system can simultaneously receive dual-band microwave signals that span a frequency range exceeding 6 octaves(300 MHz and 24 GHz).This work paves the way for multi-band microwave reception applications within an ultra-wide range by RF-chip-integrated Rydberg atomic sensor.
