A wireless distributed monitoring terminal was designed with embedded Linux used on the basis of ARM board, and an application program was developed for data collection, processing and transmission. Data were collecte...A wireless distributed monitoring terminal was designed with embedded Linux used on the basis of ARM board, and an application program was developed for data collection, processing and transmission. Data were collected from the surrounding environment and transmitted to a server via WLAN in the form of Extensible Markup Language (XML) stream, so the terminal had good flexibility to be compatible with different sensors, network devices and information systems from multiple manufacturers.展开更多
In order to improve the accuracy of spoken English translation evaluation and artificial intelligence, the design of wireless mobile terminal lest of spoken English translation accuracy evaluation system is researched...In order to improve the accuracy of spoken English translation evaluation and artificial intelligence, the design of wireless mobile terminal lest of spoken English translation accuracy evaluation system is researched. The system uses four layer construction design as wireless information collection layer, the mobile terminal information fusion layer, network data transmission layer, human computer interactive application layer. The original collection of computer-based spoken English translation information is taken based on host computer communication sensing information processing technology, Bus data transmission of English translation accuracy evaluation system is taken based on B/S structure, the test design process and remote scheduling information fusion are constructed based on LabWindows/CVl and B/S structure mining system, information data processing and cross compiler operation of the spoken English translation test evaluation system are completed in application layer, in the embedded kernel and on the wireless mobile terminal, the evaluation system is developed. The test results show that the integrated scheduling ability of spoken English translation test information system designed in this paper is better than traditional method, the cost time is less, and the control quality of the system is high.展开更多
松耦合变压器是电磁感应耦合式无线电能传输(inductively coupled power transfer,ICPT)系统中实现电能传输的重要设备。然而,松耦合变压器输出功率小、传输效率低的问题极大限制了其推广应用。提出了一种三端轴式松耦合变压器结构,分...松耦合变压器是电磁感应耦合式无线电能传输(inductively coupled power transfer,ICPT)系统中实现电能传输的重要设备。然而,松耦合变压器输出功率小、传输效率低的问题极大限制了其推广应用。提出了一种三端轴式松耦合变压器结构,分别针对该新型变压器相邻线圈对同名端同向和反向两种情况建立数学模型;然后对LCC-S补偿方式下基于三端轴式松耦合变压器的ICPT系统存在的频率分裂现象进行分析,通过仿真验证了三端轴式松耦合变压器可通过不同线圈对间的互感来提升系统的传输特性,并对同名端同向和同名端反向两种情况的输出功率和传输效率进行对比;最后通过实物实验证实了基于三端轴式松耦合变压器的ICPT系统能够提高输出功率和传输效率,同名端同向时传输效率较高,提高了16.4%;同名端反向时输出功率较高,提高了33.2%。展开更多
针对传统无线定位问题中基于接收信号强度指示(Received Signal Strength Indicator,RSSI)的测距与定位方法精度过于依赖RSSI测距精度,以至于提升定位精度成本较大的问题,提出了基于深度学习与信息交互的第5代移动通信技术(5G)终端群组...针对传统无线定位问题中基于接收信号强度指示(Received Signal Strength Indicator,RSSI)的测距与定位方法精度过于依赖RSSI测距精度,以至于提升定位精度成本较大的问题,提出了基于深度学习与信息交互的第5代移动通信技术(5G)终端群组定位方法,以降低其对基站与终端间RSSI测距精度的依赖。在5G终端群组条件下,基于终端间的相互测距信息,利用终端间测距误差较小的特点来弥补基站与终端间RSSI测距的误差,并结合深度神经网络,将接收到的RSSI信号作为输入特征、位置信息作为输出特征,进行模型训练并输出5G终端群组定位结果,使得最终定位精度得到有效提升。仿真试验验证了所提出方法的有效性。展开更多
文摘A wireless distributed monitoring terminal was designed with embedded Linux used on the basis of ARM board, and an application program was developed for data collection, processing and transmission. Data were collected from the surrounding environment and transmitted to a server via WLAN in the form of Extensible Markup Language (XML) stream, so the terminal had good flexibility to be compatible with different sensors, network devices and information systems from multiple manufacturers.
文摘In order to improve the accuracy of spoken English translation evaluation and artificial intelligence, the design of wireless mobile terminal lest of spoken English translation accuracy evaluation system is researched. The system uses four layer construction design as wireless information collection layer, the mobile terminal information fusion layer, network data transmission layer, human computer interactive application layer. The original collection of computer-based spoken English translation information is taken based on host computer communication sensing information processing technology, Bus data transmission of English translation accuracy evaluation system is taken based on B/S structure, the test design process and remote scheduling information fusion are constructed based on LabWindows/CVl and B/S structure mining system, information data processing and cross compiler operation of the spoken English translation test evaluation system are completed in application layer, in the embedded kernel and on the wireless mobile terminal, the evaluation system is developed. The test results show that the integrated scheduling ability of spoken English translation test information system designed in this paper is better than traditional method, the cost time is less, and the control quality of the system is high.
文摘松耦合变压器是电磁感应耦合式无线电能传输(inductively coupled power transfer,ICPT)系统中实现电能传输的重要设备。然而,松耦合变压器输出功率小、传输效率低的问题极大限制了其推广应用。提出了一种三端轴式松耦合变压器结构,分别针对该新型变压器相邻线圈对同名端同向和反向两种情况建立数学模型;然后对LCC-S补偿方式下基于三端轴式松耦合变压器的ICPT系统存在的频率分裂现象进行分析,通过仿真验证了三端轴式松耦合变压器可通过不同线圈对间的互感来提升系统的传输特性,并对同名端同向和同名端反向两种情况的输出功率和传输效率进行对比;最后通过实物实验证实了基于三端轴式松耦合变压器的ICPT系统能够提高输出功率和传输效率,同名端同向时传输效率较高,提高了16.4%;同名端反向时输出功率较高,提高了33.2%。
文摘针对传统无线定位问题中基于接收信号强度指示(Received Signal Strength Indicator,RSSI)的测距与定位方法精度过于依赖RSSI测距精度,以至于提升定位精度成本较大的问题,提出了基于深度学习与信息交互的第5代移动通信技术(5G)终端群组定位方法,以降低其对基站与终端间RSSI测距精度的依赖。在5G终端群组条件下,基于终端间的相互测距信息,利用终端间测距误差较小的特点来弥补基站与终端间RSSI测距的误差,并结合深度神经网络,将接收到的RSSI信号作为输入特征、位置信息作为输出特征,进行模型训练并输出5G终端群组定位结果,使得最终定位精度得到有效提升。仿真试验验证了所提出方法的有效性。
