A mine-used multi-function serial signal converter is introduced.This converter is based on Ethernet.The core of this design is embedded microprocessor STM32F107VCT6.Embedded operation system μC/OS-Ⅱ is transplanted...A mine-used multi-function serial signal converter is introduced.This converter is based on Ethernet.The core of this design is embedded microprocessor STM32F107VCT6.Embedded operation system μC/OS-Ⅱ is transplanted into this converter,and light-weight Internet protocal （LwIP） stack is also embedded to realize mutual conversion of serial signals such as meter bus （M-Bus） signal,RS485 signal,RS232 signal and Ethernet signal.Interconnection between all kinds of monitoring system interfaces under coal mine can be formed easily,which can solve compatibility problem between monitoring system and communication system and improve overall performance of safety monitoring system.The designed multi-function serial signal converter is of great value for application,which is worthy to be popularized in coal mine safety production.展开更多
Large transmission power consumptions and excessive interconnection lines are two shortcomings which exist in conventional network-on-chips. To improve performance in these areas, this paper proposes a full asynchrono...Large transmission power consumptions and excessive interconnection lines are two shortcomings which exist in conventional network-on-chips. To improve performance in these areas, this paper proposes a full asynchronous serial transmission converter for network-on-chips. By grouping the parallel data between routers into smaller data blocks, interconnection lines between routers can be greatly reduced, which finally brings about saving of power over- heads in the transmission process. Null convention logic units are used to make the circuit quasi-delay insensitive and highly robust. The proposed serial transmission converter and serial channel are implemented based on SMIC 0.18 μm standard CMOS technology. Results demonstrate that this full asynchronous serial transmission converter can save up to three quarters of the interconnection line resources and also reduce up to two-thirds of the power consumption under 32 bit data widths. The proposed full asynchronous serial transmission converter can apply to the on chip network which is sensitive to area and power.展开更多
This paper presents a novel power supply system based on the use of fuzzy inference logic to improve the power control of renewable energy sources.The system comprises renewable solar and wind sources,and an accumulat...This paper presents a novel power supply system based on the use of fuzzy inference logic to improve the power control of renewable energy sources.The system comprises renewable solar and wind sources,and an accumulator battery is used as an additional power source.The procedure for the parallel connection of multiple energy sources provides a stable power supply and optimal charging of the accumulative element.Renewable energy sources are connected in parallel using two serial converters and controlled by the controller based on the fuzzy logic.The reference voltage control of the serial converter enables an optimal use of available energy sources.The accumulative element is connected in parallel to compensate for the shortage of solar and wind energies,whereas if the available renewable energy exceeds the needs of the consumers,the surplus energy is accumulated in the battery.All measurements are conducted on the prototype of the hybrid power system under real conditions and compared with the applied systems of this type.This novel system is mainly used in remote telecom locations where there is no power distribution network.展开更多
文摘A mine-used multi-function serial signal converter is introduced.This converter is based on Ethernet.The core of this design is embedded microprocessor STM32F107VCT6.Embedded operation system μC/OS-Ⅱ is transplanted into this converter,and light-weight Internet protocal （LwIP） stack is also embedded to realize mutual conversion of serial signals such as meter bus （M-Bus） signal,RS485 signal,RS232 signal and Ethernet signal.Interconnection between all kinds of monitoring system interfaces under coal mine can be formed easily,which can solve compatibility problem between monitoring system and communication system and improve overall performance of safety monitoring system.The designed multi-function serial signal converter is of great value for application,which is worthy to be popularized in coal mine safety production.
基金supported by the National Natural Science Foundation of China(Nos.60676009,60725415,60971066,60803038)the National High-Tech Program of China(Nos.2009AA01Z258,2009AA01Z260).
文摘Large transmission power consumptions and excessive interconnection lines are two shortcomings which exist in conventional network-on-chips. To improve performance in these areas, this paper proposes a full asynchronous serial transmission converter for network-on-chips. By grouping the parallel data between routers into smaller data blocks, interconnection lines between routers can be greatly reduced, which finally brings about saving of power over- heads in the transmission process. Null convention logic units are used to make the circuit quasi-delay insensitive and highly robust. The proposed serial transmission converter and serial channel are implemented based on SMIC 0.18 μm standard CMOS technology. Results demonstrate that this full asynchronous serial transmission converter can save up to three quarters of the interconnection line resources and also reduce up to two-thirds of the power consumption under 32 bit data widths. The proposed full asynchronous serial transmission converter can apply to the on chip network which is sensitive to area and power.
基金This work was supported by the Ministry of Education,Science and Technological Development of the Republic of Serbia(No.451-03-68/2020-14/200053).
文摘This paper presents a novel power supply system based on the use of fuzzy inference logic to improve the power control of renewable energy sources.The system comprises renewable solar and wind sources,and an accumulator battery is used as an additional power source.The procedure for the parallel connection of multiple energy sources provides a stable power supply and optimal charging of the accumulative element.Renewable energy sources are connected in parallel using two serial converters and controlled by the controller based on the fuzzy logic.The reference voltage control of the serial converter enables an optimal use of available energy sources.The accumulative element is connected in parallel to compensate for the shortage of solar and wind energies,whereas if the available renewable energy exceeds the needs of the consumers,the surplus energy is accumulated in the battery.All measurements are conducted on the prototype of the hybrid power system under real conditions and compared with the applied systems of this type.This novel system is mainly used in remote telecom locations where there is no power distribution network.
