Design of an Ultra-Low Power Timer System Based on C8051F410

2012 ◽  
Vol 236-237 ◽  
pp. 1227-1231
Author(s):  
X.J. Peng ◽  
C.R. Xiong
Keyword(s):  
Low Power ◽  
Software Design ◽  
Low Power Design ◽  
Relevant Information ◽  
Power Cost ◽  
Ultra Low Power ◽  
Battery Power ◽  
Detection Failure ◽  
Machine Interface ◽  
Hardware Circuit

This paper proposes an ultra-low power design based on C8051F410 which is used in a timer system for industrial production and device detection failure occurred at a time and the record of relevant information. Two aspects like system hardware circuit and software design of the ultra-low power timer system are demonstrated. This system features low power consumption from the entire system, including the Chinese man-machine interface which consumes only 1mA power cost. This system is suitable for the situations where battery power is limited.

scholarly journals Autonomous micro-platform for multisensors with an advanced power management unit (PMU)

2018 ◽  
Vol 7 (1) ◽  
pp. 299-308 ◽  
Author(s):  
Pierre Bellier ◽  
Philippe Laurent ◽  
Serguei Stoukatch ◽  
François Dupont ◽  
Laura Joris ◽  
...  
Keyword(s):  
Low Power ◽  
Power Management ◽  
Sampling Rate ◽  
Low Power Design ◽  
Management Unit ◽  
Sensor Data ◽  
Storage Device ◽  
Processing Unit ◽  
Ultra Low Power ◽  
Power Management Unit

Abstract. In this work, we developed and characterised an autonomous micro-platform including several types of sensors, an advanced power management unit (PMU) and radio frequency (RF) transmission capabilities. Autonomy requires integration of an energy harvester, an energy storage device, a PMU, ultra-low-power components (including sensors) and optimized software. Our choice was to use commercial off-the-shelf components with low-power consumption, low cost and compactness as selection criteria. For the multi-purpose micro-platform, we choose to include the most common sensors (such as temperature, humidity, luminosity, acceleration, etc.) and to integrate them in one miniaturised autonomous device. A processing unit is embedded in the system. It allows for data acquisition from each sensor individually, simple data processing, and storing and/or wireless data transmission. Such a system can be used as stand-alone, with an internal storage in a non-volatile memory, or as a node in a wireless network, with bi-directional communication with a hub device where data can be analysed further. According to specific application requirements, system settings can be adjusted, such as the sampling rate, the resolution and the processing of the sensor data. Parallel to full autonomous functionality, the low-power design enables us to power the system by a small battery leading to a high degree of autonomy at a high sampling rate. Therefore, we also developed an alternative battery-powered version of the micro-platform that increases the range of applications. As such, the system is highly versatile and due to its reduced dimensions, it can be used nearly everywhere. Typical applications include the Internet of Things, Industry 4.0, home automation and building structural health monitoring.

scholarly journals High precision hybrid RF and ultrasonic chirp-based ranging for low-power IoT nodes

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Bert Cox ◽  
Liesbet Van der Perre ◽  
Stijn Wielandt ◽  
Geoffrey Ottoy ◽  
Lieven De Strycker
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Pulse Compression ◽  
Operation Time ◽  
Distance Measurements ◽  
Power Cost ◽  
Ultra Low Power ◽  
Positioning Systems ◽  
Rf Systems ◽  
Processing Power

Abstract Hybrid acoustic-RF systems offer excellent ranging accuracy, yet they typically come at a power consumption that is too high to meet the energy constraints of mobile IoT nodes. We combine pulse compression and synchronized wake-ups to achieve a ranging solution that limits the active time of the nodes to 1 ms. Hence, an ultra low-power consumption of 9.015 µW for a single measurement is achieved. The operation time is estimated on 8.5 years on a CR2032 coin cell battery at a 1 Hz update rate, which is over 250 times larger than state-of-the-art RF-based positioning systems. Measurements based on a proof-of-concept hardware platform show median distance error values below 10 cm. Both simulations and measurements demonstrate that the accuracy is reduced at low signal-to-noise ratios and when reflections occur. We introduce three methods that enhance the distance measurements at a low extra processing power cost. Hence, we validate in realistic environments that the centimeter accuracy can be obtained within the energy budget of mobile devices and IoT nodes. The proposed hybrid signal ranging system can be extended to perform accurate, low-power indoor positioning.

Ultra-low-power design

2006 ◽  
Vol 22 (4) ◽  
pp. 23-29 ◽  
Author(s):  
J. Rabaey ◽  
J. Ammer ◽  
B. Otis ◽  
F. Burghardt ◽  
Y.H. Chee ◽  
...  
Keyword(s):  
Low Power ◽  
Low Power Design ◽  
Ultra Low Power
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