Technology Mapping Method Using Integer Linear Programming for Low Power Consumption and High Performance in General-Synchronous Framework

Author(s):  
Junki KAWAGUCHI ◽  
Hayato MASHIKO ◽  
Yukihide KOHIRA
2020 ◽  
Vol 64 (1-4) ◽  
pp. 165-172
Author(s):  
Dongge Deng ◽  
Mingzhi Zhu ◽  
Qiang Shu ◽  
Baoxu Wang ◽  
Fei Yang

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.


Nanophotonics ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 937-945
Author(s):  
Ruihuan Zhang ◽  
Yu He ◽  
Yong Zhang ◽  
Shaohua An ◽  
Qingming Zhu ◽  
...  

AbstractUltracompact and low-power-consumption optical switches are desired for high-performance telecommunication networks and data centers. Here, we demonstrate an on-chip power-efficient 2 × 2 thermo-optic switch unit by using a suspended photonic crystal nanobeam structure. A submilliwatt switching power of 0.15 mW is obtained with a tuning efficiency of 7.71 nm/mW in a compact footprint of 60 μm × 16 μm. The bandwidth of the switch is properly designed for a four-level pulse amplitude modulation signal with a 124 Gb/s raw data rate. To the best of our knowledge, the proposed switch is the most power-efficient resonator-based thermo-optic switch unit with the highest tuning efficiency and data ever reported.


2013 ◽  
Vol 333-335 ◽  
pp. 2412-2416
Author(s):  
Jin Feng Yan ◽  
Ming Deng ◽  
Yan Jun Li ◽  
Qi Sheng Zhang

SoPC technology is a high-performance, low-power consumption embedded system solution based on embedded microprocessor, providing a new way for developing new type centralized engineering seismograph. The paper presents the development of a new type centralized engineering seismograph based on SoPC technology, which adopts FPGA design based on SoPC technology for the hardware design and embedded software program development of the 48-channel engineering seismograph. According to actual needs of currently available centralized engineering seismograph, combining the actual characteristics of SoPC embedded technology, a portable, low-power consumption and high-performance new type centralized engineering seismograph is constructed. The paper describes the hardware design and software program implementation of the centralized engineering seismograph in detail.


2014 ◽  
Vol 3 (5-6) ◽  
Author(s):  
Tetsuya Kawanishi

AbstractThis paper describes wired and wireless seamless networks consisting of radiowave and optical fiber links. Digital coherent technology developed for high-speed optical fiber transmission can mitigate signal deformation in radiowave links in the air as well as in optical fibers. Radio-over-fiber (RoF) technique, which transmits radio waveforms on intensity envelops of optical signals, can provide direct waveform transfer between optical and radio signals by using optical-to-electric or electric-to-optical conversion devices. Combination of RoF in millimeter-wave bands and digital coherent with high-performance digital signal processing (DSP) can provide wired and wireless seamless links where bit rate of wireless links would be close to 100 Gb/s. Millimeter-wave transmission distance would be shorter than a few kilometers due to large atmospheric attenuation, so that many moderate distance wireless links, which are seamlessly connected to optical fiber networks should be required to provide high-speed mobile-capable networks. In such systems, reduction of power consumption at media converters connecting wired and wireless links would be very important to pursue both low-power consumption and large capacity.


2013 ◽  
Vol 373-375 ◽  
pp. 363-366
Author(s):  
Jing Sheng Yu ◽  
Hong Qiang Sun

It describes the basic principle of velocity parameters measuring of car in operation, establishes the related mathematical model. It disigns an intelligent, integrated digital solutions to combination instrumentation of the car based on MC9S12DP256B. This system has advantages of high performance, high precision, low cost, low power consumption, good stability, sensitive respond and expandability. The system measures and shows online velocity parameters of the car. It has fuction such as safety alarm. The system reserves bus interface such as SCI and CAN, correspondences easily with other electronic engine control systems of the car.


2013 ◽  
Vol 273 ◽  
pp. 722-725
Author(s):  
Shi Hong Lan ◽  
Jian Zhang

In the field of modern industrial control, PLC has become the important equipment in automatic control. With the development of semiconductor technology, chip technology, the embedded PLC chipset emerged. The chipset microcontroller cores, PLC system software is loaded with high-performance, low power consumption, small size and other characteristics. User to flexibly customize according to their needs, using chipsets embedded PLC. This paper described the PLC chip design and application.


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