what is duty cycle
Duty cycle is the ratio of the output high time to the total cycle time Duty cycle is expressed as a percentage (with 50% having equal clock high and low times). Duty cycle is important in systems that use both the rising and falling clock edges, such as with DDR.
Using the ADXL202 Duty Cycle Output
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If the 0 g duty cycle output of the ADXL202 is other than 50%, and/or the duty cycle changes more or less than 12.5% per g, the acceleration calculation will be inaccurate. In practice, the 0 g output and the sensitivity of the ADXL202 vary somewhat from device to device (see
Influence of laser welding process parameters on weld pool geometry and duty cycle .
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The success of laser welding depends on the careful consideration of process parameters and its requirements. The effective laser material processing is often useful to get a theoretical estimation of expected process results. The heating of sheet metal with a laser
Effect of duty cycle on energy consumption in wireless sensor networks
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Most studies define a common duty cycle value throughout the wireless sensor networks (WSNs) to achieve synchronization among the nodes. On the other hand, a few studies proposed adaptation of the duty cycle according to uniform traffic conditions to decrease the
Duty cycle management in sensor networks based on 802.15. 4 beacon enabled MAC
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Abstract The recent IEEE 802.15. 4 standard offers a promising platform for wireless sensor networks. Among the main problems in many sensor network applications is the problem of ensuring the desired quality of service, expressed as the mean data rate obtained from a
Microstructural evaluation of low and high duty cycle Nd: YAG laser beam welds in 2024-T3 aluminum
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The propensity for hot tearing and porosity in pulsed Nd-YAG laser beam welding of 2024- T3 aluminum was observed to vary with beam on duty cycle . High average laser output power of 1 kW and variation in duty cycle were achieved by multiplexing a system of three
Duty cycle of the detector dog: A baseline study
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Dogs have been successfully used for many years by military and law enforcement agencies to detect varied substances. A 1991 report prepared for the US Congress noted that the dog and handler team remains the most widely used, accurate, durable and flexible system
A dynamic duty cycle MAC algorithm for wireless body area networks
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A wireless body area network (WBAN) allows the integration of low power, invasive or noninvasive miniaturized sensors around a human body. In this paper, a dynamic duty cycle algorithm is designed to handle energy efficiency, by varying the sleep period according to
Dc-dc converter duty cycle ann estimation for dg applications
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A PV array is usually oversized to compensate for a low power yield during winter months. This mismatching between a PV module and a load requires further over-sizing of the PV array and thus increases the overall system cost. To mitigate this problem, a maximum
The effect of PHEV and HEV duty cycles on battery and battery pack performance
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Comparing different batteries or different battery chemistries for real life duty cycles is an onerous process and requires each battery to undergo cycling for each specific duty cycle As the duty cycle eccentricity increases the energy efficiency drops for all chemistries tested
A novel digital-to-analog conversion technique using duty cycle modulation
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The novel digital-to-analog conversion technique studied in this paper, is founded on the digital duty cycle modulation principle. It consists of a simple digital duty cycle modulation program loaded in the flash memory of a microcontroller and an external analog low pass
EE-RI-MAC: An energy-efficient receiver-initiated asynchronous duty cycle MAC protocol for dynamic traffic loads in wireless sensor networks
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Introducing duty cycling in the MAC protocol used in wireless sensor networks has been proven to be an efficient way of prolonging the battery lifetime of the sensor nodes because idle listening is a high energy consumption factor. This concept has been proven efficient in
Energy-efficient data aggregation routing and duty cycle scheduling in cluster-based sensor networks
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The lifetime of a network, dependent upon battery capacity and energy consumption efficiency, plays an important role in wireless sensor networks. In this paper, the reduction of energy consumption is investigated by the considerations of the effects of cluster-based data
Medium access control protocol with dynamic duty cycle in wireless sensor network
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Lowering the energy consumption result in increase of time delay from end to end in Wireless Sensor Network (WSN). To address the tradeoff between energy consumption and time delay, this paper proposes a Media Access Control (MAC) protocol based on dynamic
An asynchronous duty cycle adjustment MAC protocol for wireless sensor networks
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In this paper, we propose an asynchronous duty cycle adjustment MAC protocol, called ADCA, for the wireless sensor network (WSN). ADCA is a sleep/wake protocol to reduce power consumption without lowering network throughput or lengthening transmission delay
An adaptive duty cycle scheme for gps scheduling in mobile location sensing applications
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Mobile location sensing applications (MLSAs) represent an emerging genre of applications that exploit Global Positioning System (GPS) technology and facilitate location-based services. The design of MLSAs must incorporate a tradeoff between information accuracy
High B1 dutycycle in bilateral breast imaging at 7T
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High B1 dutycycle in bilateral breast imaging at 7T Michel GM Italiaander Peter J. Nijholt Oliver Kraff Alexander Raaijmakers Bertine Intrinsic SNR increases at higher field strength, like 7T, but at higher frequencies SAR limits the RF pulse duty cycle and consequently the
A TOF range image sensor with an ambient light charge drain and small duty cycle light pulse
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This paper presents a TOF range image sensor with an ambient light charge drain and small duty cycle light pulse. Under the same optical energy consumption of light source, the charge drain and small duty cycle for the gate control pulse more effectively reduce the
High power tests of a high duty cycle high repetition rate RF photoinjector gun for the BESSY FEL
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Abstract The proposed BESSY Soft X-Ray FEL will use a normal conducting high duty cycle high repetition rate 1.3 GHz rf photo gun for the commissioning phase. Aiming for an operation at a duty cycle of 2.5% and a peak power of 3 MW the thermal load in the gun
The first magnetic field control (B-train) to optimize the duty cycle of a synchrotron in clinical operation
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Abstract In December 2011 the Heidelberg Ion Therapy Center started to use the magnetic field feedback control for its clinical operation. Therewith the magnetic field deviation of the ramped magnets in the synchrotron depending on eddy currents and hysteresis are no
Energy-aware duty cycle scheduling for efficient data collection in wireless sensor networks
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Wireless sensor networks include a large number of wireless Sensor nodes to gather the information from its environment. These sensor nodes for various applications are usually designed to work in conditions where it not be possible to recharge or replace the CSE PROJECTS