scholarly journals Comparison of Communication Protocol Power Consumption of Fine-Dust IoT Sensor Based on oneM2M Standard Protocol

2020 ◽  
Vol 4 (1) ◽  
pp. 7-14
Author(s):  
Seong-Se Cho ◽  
◽  
Seung-Hun Kim ◽  
Won-Hyuck Choi ◽  
◽  
...  
Keyword(s):  
Power Consumption ◽  
Communication Protocol ◽  
Standard Protocol ◽  
Fine Dust

Design of the Improved Accompanying Temperature Logger

2014 ◽  
Vol 989-994 ◽  
pp. 3015-3018
Author(s):  
Juan Guo ◽  
Shi Ying Liang ◽  
Zong Tao Yin
Keyword(s):  
Power Consumption ◽  
Energy Conservation ◽  
Low Power ◽  
Communication Protocol ◽  
Reducing Power ◽  
Experimental Tests ◽  
Low Power Consumption ◽  
Temperature Logger ◽  
Ultra Low Power

This paper describes research on some methods of reducing power consumption to reduce the volume accompanying logger. For the requirement of ultra-low power consumption and miniature, the design is described separately from the hardware and software, mainly including temperature detecting module, interface of communication, low current circuit hardware, energy conservation ,arouse from power down state, communication protocol, etc. The experimental tests for device prove that the research can achieve low power requirements.

scholarly journals Lightweight Security for MQTT-SN

2018 ◽  
Vol 7 (4.11) ◽  
pp. 262
Author(s):  
M. H. Amaran ◽  
M. S. Rohmad ◽  
L. H. Adnan ◽  
N. N. Mohamed ◽  
H. Hashim
Keyword(s):  
Power Consumption ◽  
Sensor Network ◽  
Communication Protocol ◽  
Data Communication ◽  
Security Scheme ◽  
Iot Applications ◽  
Encryption Schemes ◽  
Lightweight Encryption

This study discusses a method to secure Message Queuing Telemetry Transport-Sensor network (MQTT-SN). MQTT-SN is a popular data communication protocol used in developing IoT applications and can be secured by augmenting it with a security scheme. In this work, several lightweight encryption schemes to be used in tandem with MQTT-SN were tested and analysed. The best algorithm is identified based on the speed of encryption and overall power consumption when implemented in IoT environment. It was found that L-BLOCK is the overall performer in securing MQTT-SN and should be highly considered when developing IoT applications.   

Outdoor Personnel Positioning System Based on GPS

2013 ◽  
Vol 385-386 ◽  
pp. 1537-1540
Author(s):  
Hai Peng Pan ◽  
Le Wang ◽  
Dong Dong Chen
Keyword(s):  
Power Consumption ◽  
Communication Protocol ◽  
Google Earth ◽  
Positioning System ◽  
Positioning Accuracy ◽  
Detention Center ◽  
Wireless Positioning ◽  
Moving Groups ◽  
Monitoring Software ◽  
Exchange Data

With the comparison of wireless positioning technology such as Wi-Fi, ZigBee, GPS, this paper presents an outdoor personnel positioning system based on GPS. It is composed of electronic wristbands (used for detainees), handsets (used for supervisors) and monitoring software of the host computer. In order to improve the positioning accuracy and reduce power consumption of the system, high-precision GPS chips and low power microcontroller chips are applied. Handsets can exchange data with electronic wristbands through self-prepared communication protocol. It also can work out the distance through a precise latitude and longitude distance algorithm. Finally, the monitoring software will reproduce personnel routes in Google Earth. The system can achieve the positioning of fixed groups and moving groups, which is suitable for the detention center to supervise, escort or chase detainees.

scholarly journals Design and Implementation of a LoRa Communication System Supporting Edge Computing on the Smart Multi-Platform IoT Gateway

2021 ◽  
Vol 31 (2) ◽  
pp. 10-18
Keyword(s):  
Power Consumption ◽  
Communication System ◽  
Communication Protocol ◽  
Edge Computing ◽  
Test Results ◽  
Processing Load ◽  
Design And Implementation ◽  
Iot Applications ◽  
Real Time Applications ◽  
Design And Manufacture

LoRa technology was developed over 10 years ago, with many communication protocols optimized for LoRaWAN. However, in the protocols, all data from the end devices are sent directly or forwarded through a gateway to the LoRaWAN server and processed centrally there. Accordingly, the gateway only acts as a forwarder. This mechanism increases the processing load on the server, increases latency, and is not suitable for applications with a large number of end devices or that require real-time applications. In this paper, we design and develop a new LoRa communication protocol that supports edge computing at the gateway. At the same time, the authors design and manufacture a Smart Multiplatform IoT Gateway (SMGW) and LoRa nodes that allow the implementation and evaluation of the proposed protocol in practice. The test results on a system of 50 LoRa nodes and the SMGW show that the proposed protocol works well when evaluating its performance in terms of reliability, latency, and power consumption. This proposed system is suitable for applications that require edge computing and is easily extendable to other IoT applications.

scholarly journals Lightweight Security for MQTT-SN

2018 ◽  
Vol 7 (4.11) ◽  
pp. 223 ◽  
Author(s):  
M. H. Amaran ◽  
M. S. Rohmad ◽  
L. H. Adnan ◽  
N. N. Mohamed ◽  
H. Hashim
Keyword(s):  
Power Consumption ◽  
Sensor Network ◽  
Communication Protocol ◽  
Data Communication ◽  
Security Scheme ◽  
Iot Applications ◽  
Encryption Schemes ◽  
Lightweight Encryption

This study discusses a method to secure Message Queuing Telemetry Transport-Sensor network (MQTT-SN). MQTT-SN is a popular data communication protocol used in developing IoT applications and can be secured by augmenting it with a security scheme. In this work, several lightweight encryption schemes to be used in tandem with MQTT-SN were tested and analysed. The best algorithm is identified based on the speed of encryption and overall power consumption when implemented in IoT environment. It was found that L-BLOCK is the overall performer in securing MQTT-SN and should be highly considered when developing IoT applications. 

scholarly journals A Design of Adaptive Control and Communication Protocol for SWIPT System in 180 nm CMOS Process for Sensor Applications

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 848
Author(s):  
Muhammad Riaz Ur Rehman ◽  
Imran Ali ◽  
Danial Khan ◽  
Muhammad Asif ◽  
Pervesh Kumar ◽  
...  
Keyword(s):  
Adaptive Control ◽  
Power Consumption ◽  
Communication Protocol ◽  
Power Splitting ◽  
Clock Frequency ◽  
Rf Power ◽  
Digital Clock ◽  
Ambient Environment ◽  
Sensor Applications ◽  
Rf Energy

This paper presents an adaptive control and communication protocol (ACCP) for the ultra-low power simultaneous wireless information and power transfer (SWIPT) system for sensor applications. The SWIPT system-related operations depend on harvested radio frequency (RF) energy from the ambient environment. The necessary power for SWIPT system operation is not always available and it depends on the available RF energy in the ambient environment, transmitted RF power from the SWIPT transmitter, and the distance from the transmitter and channel conditions. Thus, an efficient control and communication protocol is required which can control the SWIPT system for sensor applications which mainly consists of a transmitter and a receiver. Multiple data frame structures are used to optimize the exchange of bits for the communication and control of the SWIPT system. Both SWIPT transmitter and receiver are capable of using multiple modulation schemes which can be switched depending on the channel condition and the available RF energy in the ambient environment. This provides support for automatic switching between the time switching scheme and power splitting scheme for the distribution of received RF power in the SWIPT receiver. It also adjusts the digital clock frequency at the SWIPT receiver according to the harvested power level to optimize the power consumption. The SWIPT receiver controller with ACCP is implemented in 180 nm CMOS technology. The RF frequency of the SWIPT operation is 5.8 GHz. Digital clock frequency at the SWIPT receiver can be adjusted between 32 kHz and 2 MHz which provides data rates from 8 to 500 kbps, respectively. The power consumption and area utilization are 12.3 µW and 0.81 mm².

Compositional Tuning of Negative Differential Resistance in Bulk Silver Iodide Memristor

2020 ◽  
Author(s):  
SMITA GAJANAN NAIK ◽  
Mohammad Hussain Kasim Rabinal
Keyword(s):  
Power Consumption ◽  
Negative Differential Resistance ◽  
Silver Iodide ◽  
Differential Resistance ◽  
Fast Response ◽  
Low Power Consumption ◽  
Switching Effect ◽  
Memory Switching ◽  
Bulk Silver ◽  
Emerging Memory

Electrical memory switching effect has received a great interest to develop emerging memory technology such as memristors. The high density, fast response, multi-bit storage and low power consumption are their...

Optimal design of a high homogeneous and small-size shim coil for atomic spin gyroscope based on 0-1 linear programming

2020 ◽  
Vol 64 (1-4) ◽  
pp. 165-172
Author(s):  
Dongge Deng ◽  
Mingzhi Zhu ◽  
Qiang Shu ◽  
Baoxu Wang ◽  
Fei Yang
Keyword(s):  
Linear Programming ◽  
Power Consumption ◽  
Low Power ◽  
Optimization Design ◽  
Structural Parameters ◽  
Axial Position ◽  
Low Power Consumption ◽  
Optimal Method ◽  
Atomic Spin ◽  
Shim Coil

It is necessary to develop a high homogeneous, low power consumption, high frequency and small-size shim coil for high precision and low-cost atomic spin gyroscope (ASG). To provide the shim coil, a multi-objective optimization design method is proposed. All structural parameters including the wire diameter are optimized. In addition to the homogeneity, the size of optimized coil, especially the axial position and winding number, is restricted to develop the small-size shim coil with low power consumption. The 0-1 linear programming is adopted in the optimal model to conveniently describe winding distributions. The branch and bound algorithm is used to solve this model. Theoretical optimization results show that the homogeneity of the optimized shim coil is several orders of magnitudes better than the same-size solenoid. A simulation experiment is also conducted. Experimental results show that optimization results are verified, and power consumption of the optimized coil is about half of the solenoid when providing the same uniform magnetic field. This indicates that the proposed optimal method is feasible to develop shim coil for ASG.

Analysis of Characteristics of Halogen and LED Automobile Lamps

2020 ◽  
pp. 57-62
Author(s):  
Olga Yu. Kovalenko ◽  
Yulia A. Zhuravlyova
Keyword(s):  
Power Consumption ◽  
Flip Chip ◽  
Weather Conditions ◽  
Luminous Flux ◽  
Luminous Efficacy ◽  
Colour Temperature ◽  
Study Results ◽  
Calculation Results ◽  
Mandatory Rules ◽  
Halogen Lamps

This work contains analysis of characteristics of automobile lamps by Philips, KOITO, ETI flip chip LEDs, Osram, General Electric (GE), Gtinthebox, OSLAMPledbulbs with H1, H4, H7, H11 caps: luminous flux, luminous efficacy, correlated colour temperature. Characteristics of the studied samples are analysed before the operation of the lamps. The analysis of the calculation results allows us to make a conclusion that the values of correlated colour temperature of halogen lamps are close to the parameters declared by manufacturers. The analysis of the study results has shown that, based on actual values of correlated colour temperature, it is not advisable to use LED lamps in unfavourable weather conditions (such as rain, fog, snow). The results of the study demonstrate that there is a slight dispersion of actual values of luminous flux of halogen lamps by different manufacturers. Maximum variation between values of luminous flux of different lamps does not exceed 14 %. The analysis of the measurement results has shown that actual values of luminous flux of all halogen lamps comply with the mandatory rules specified in the UN/ECE Regulation No. 37 and luminous flux of LED lamps exceeds maximum allowable value by more than 8 %. Luminous efficacy of LED lamps is higher than that of halogen lamps: more than 82 lm/W and lower power consumption. The results of the measurements have shown that power consumption of a LED automobile lamp is lower than that of similar halogen lamps by 3 times and their luminous efficacy is higher by 5 times.

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