Design and Implement of the Out-of-Position Alarm System Based on CC2430

2011 ◽  
Vol 187 ◽  
pp. 377-382
Author(s):  
Si Long Wu ◽  
Xiao Na Xu ◽  
En Cheng
Keyword(s):  
Wireless Communication ◽  
Software Design ◽  
Functional Relationship ◽  
Multipath Fading ◽  
Alarm System ◽  
Detail Design ◽  
Zigbee Technology ◽  
Series Of Experiments ◽  
Technology And Communication ◽  
Received Signal Strength Indication

The paper put forward a detail design of the out-of-position alarm system based on ZigBee technology and communication chip CC2430 to protect valuables from leaving safe position. It introduced the hardware and software design of the system, implemented short-range wireless communication, established the functional relationship between received signal strength indication (RSSI) and wireless communication distance, solved the problem of multipath fading by software method. Then it presented a series of experiments to prove the system can steadily communicate information to meet security requirement.

scholarly journals Characterizing the Impact of Doppler Effects on Body-Centric LoRa Links with SDR

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4049
Author(s):  
Thomas Ameloot ◽  
Marc Moeneclaey ◽  
Patrick Van Van Torre ◽  
Hendrik Rogier
Keyword(s):  
Wireless Communication ◽  
Low Power ◽  
Multipath Fading ◽  
Doppler Spread ◽  
Excellent Performance ◽  
Wireless Applications ◽  
Doppler Shifts ◽  
Doppler Effects ◽  
The Impact ◽  
Measurement Campaigns

Long-range, low-power wireless technologies such as LoRa have been shown to exhibit excellent performance when applied in body-centric wireless applications. However, the robustness of LoRa technology to Doppler spread has recently been called into question by a number of researchers. This paper evaluates the impact of static and dynamic Doppler shifts on a simulated LoRa symbol detector and two types of simulated LoRa receivers. The results are interpreted specifically for body-centric applications and confirm that, in most application environments, pure Doppler effects are unlikely to severely disrupt wireless communication, confirming previous research, which stated that the link deteriorations observed in a number of practical LoRa measurement campaigns would mainly be caused by multipath fading effects. Yet, dynamic Doppler shifts, which occur as a result of the relative acceleration between communicating nodes, are also shown to contribute to link degradation. This is especially so for higher LoRa spreading factors and larger packet sizes.

scholarly journals PAPR REDUCTION TECHNIQUES AND IMAGE QUALITY ASSESSMENTIN IMAGE BASED MMS VLC SYSTEM

2021 ◽  
Vol 9 (2) ◽  
pp. 1178-1185
Author(s):  
Kiranmai Babburu , Et. al.
Keyword(s):  
Image Quality ◽  
Wireless Communication ◽  
Digital Image ◽  
Average Power ◽  
Multipath Fading ◽  
Multicarrier Modulation ◽  
Papr Reduction ◽  
Optical Wireless Communication ◽  
Optical Wireless ◽  
Reduction Techniques

The radiofrequency method of transmission suffers from the problem of the limited licensed radio frequency spectrum, & security, wide EMI (electromagnetic interference), high multipath fading & power consumption for short-range applications. The solution to these problems can be achieved by using optical wireless communication technique called the Visible Light Communication system where the data is sent through regulated emission of light. The transmission of digital image information productively in the present optical wireless communication framework is an uphill task as these systems often suffer from problems like frequency selective fading propagation losses and inter-symbol interferences. In order to conquer such difficulties we hereby propose a robust method to transfer the digital image through a Multi-Carrier Modulation Scheme-MMS. In this paper, an Image-Based Multicarrier modulation VLC system is designed through which is sent a corrupted Digital Image with additive white Gaussian noise and explored the overall execution of the Image based Multicarrier modulation VLC system at distinct SNR values.  The paper also addresses the issue of high Peak to Average Power Ratio (PAPR) in Multicarrier modulation and reduced it by using different PAPR reduction techniques. The received image quality of the proposed system is obtained under different signal to noise ratios at different modulation schemes..

Wireless Vehicle Detector Based on Magnetoresistive Sensors

2014 ◽  
Vol 678 ◽  
pp. 295-298
Author(s):  
Shan Ying Cheng ◽  
Xue Mei Zhou ◽  
Qin Jiang
Keyword(s):  
System Design ◽  
Software Design ◽  
High Performance ◽  
Traffic Data ◽  
Zigbee Technology ◽  
Magnetoresistive Sensors ◽  
Is Design

In order to acquire large traffic data, a wireless vehicle detector based on anisotropic magnetoresistive sensors and ZigBee technology is design. The principle, system design and software design are introduced in detail. The experiment result shows that the wireless vehicle detector can detect the presence and the driving direction of a vehicle. Make further effort, the speed of a vehicle can be estimated. The vehicle detector will be widely applied with its easy installation and high performance.

Design Car Warning System Based on Wireless Communication

2014 ◽  
Vol 1065-1069 ◽  
pp. 3297-3300
Author(s):  
Yin Wang
Keyword(s):  
Wireless Communication ◽  
Software Design ◽  
Warning System ◽  
Short Message ◽  
Warning Systems ◽  
Good Market ◽  
Sensor Module ◽  
At Command ◽  
System Components ◽  
Communication Module

Design using MSP430 microcontroller core, control GSM wireless communication module implements remote car alarm warning systems, from system components, as well as hardware and software design works done in detail, the system triggers an alarm through the sensor module, enter through the microcontroller to TC35i AT command so that it can promptly send a short message to alert the owner, breaking the traditional alarm distance limitations, with good market prospects.

The Design of Wireless Communication Module

2011 ◽  
Vol 320 ◽  
pp. 475-480
Author(s):  
Dong Wei Gao ◽  
Qing Gong Ma ◽  
Xiao Ling Zhou ◽  
Jun Hua Li
Keyword(s):  
Control System ◽  
Wireless Communication ◽  
Software Design ◽  
Hardware Design ◽  
Display Device ◽  
Communication Device ◽  
Communication Module

This task is based on the control of the MCU. In order to make it work, the first and foremost thing is to configure the interface among the MCU, display device and the wireless communication device with reason. In detail, the hardware design concludes the MCU control system, display circuit as well as the design of the wireless one. As for the software design, there are the initialization of the MCU and the display component. The programmer for the control of the display part and wireless part are also concluded.

Design of Intelligent Acquisition Terminal for Communication Base Station Parameters

2014 ◽  
Vol 644-650 ◽  
pp. 4338-4341
Author(s):  
Xi Na Zhang ◽  
Zhi Zhong Zhang
Keyword(s):  
Wireless Communication ◽  
Data Acquisition ◽  
Software Design ◽  
Management System ◽  
Base Station ◽  
Design Solution ◽  
Intelligent Terminal ◽  
Core Module ◽  
Communication Module ◽  
Data Acquisition Module

The terminal uses data acquisition module to collect antenna parameters of the base station, data is processed by S3C2440 core module and transmitted to management system by wireless communication module. This introduces hardware and software design solution of the terminal. The intelligent terminal can measure coordinates, altitude, azimuth and tilt of base station.

Smart Power Meter System Based on ZigBee

2013 ◽  
Vol 860-863 ◽  
pp. 1877-1880
Author(s):  
Zhi Qun Cheng ◽  
Lun Kang ◽  
Yong Cheng
Keyword(s):  
Wireless Communication ◽  
Wireless Network ◽  
Data Transmission ◽  
Basic Function ◽  
Smart Power ◽  
Power Meter ◽  
Zigbee Technology ◽  
At Command ◽  
Zigbee Protocol ◽  
Communication Distance

The Smart power meter system based on ZigBee technology is successfully developed in the paper. The EM250 SOC chips are adopted to develop the wireless communication modules with ZigBee protocol. Parsing the AT command, encryption and such more basic function, the two different and independent program framework for the ESP and IHD(In-Home Display) have been worked out except finishing the data transmission. A smart wireless network based on ZigBee has been established. The home and outdoor testing have also been implemented too. The measured results show that a coordinator can support more than 500 nodes and communication distance reach more than 1000 meter outdoor and more than 50 meter from home to outdoor through the two walls.

The WSID Circuit Design Based on Arduino

2014 ◽  
Vol 668-669 ◽  
pp. 866-872
Author(s):  
Gang Wang ◽  
Xiao Qiang Jia
Keyword(s):  
Circuit Design ◽  
Software Design ◽  
Radio Frequency Identification ◽  
Environmental Parameters ◽  
Embedded Software ◽  
Circuit Board ◽  
Industrial Control ◽  
Active Rfid ◽  
Zigbee Technology ◽  
Frequency Identification

This paper combine Zigbee technology and RFID (Radio Frequency Identification ) technology together in order to design a controler circuit scheme that can flexible networking, RF drive, environmental parameters data acquisition, industrial control in one of WSID equipment. Described in detail the main circuit board Arduino, active RFID reader module Nrf24LE1 and CC2530 Zigbee module circuit design and the embedded software design and PC software design, the experimental results show the effectiveness of the system.

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