摘要：【中文】本申请属于开关电源技术领域，涉及多变压器并用拓扑电路和LLC谐振开关电源。所述多变压器并用拓扑电路包括：半桥拓扑上下臂、LLC串联谐振电路、变压器组以及输出整流滤波电路；其中，所述半桥拓扑上下臂与所述LLC串联谐振电路电连接，所述LLC串联谐振电路与所述变压器组电连接，所述所述变压器组与所述输出整流滤波电路电连接；所述半桥拓扑上下臂接入单相电或者三相电经整流滤波后的直流电；所述半桥拓扑上下臂将所述单相电或者三相电经整流滤波后的直流电转变成高频方波；所述半桥拓扑上下臂接收第一脉宽调制信号和第二脉宽调制信号，控制所述高频方波的频率，进而调节所述变压器组输出的电压和功率。其有利于解决单个大功率变压器存在的缺陷。 【EN】The application belongs to the technical field of switching power supplies, and relates to a multi-transformer combined topology circuit and an LLC resonant switching power supply. The multi-transformer combined topology circuit comprises: the half-bridge topology comprises an upper arm and a lower arm of a half-bridge topology, an LLC series resonant circuit, a transformer bank and an output rectifying and filtering circuit; the upper and lower arms of the half-bridge topology are electrically connected with the LLC series resonant circuit, the LLC series resonant circuit is electrically connected with the transformer bank, and the transformer bank is electrically connected with the output rectifying and filtering circuit; the upper arm and the lower arm of the half-bridge topology are connected with direct current of single-phase electricity or three-phase electricity after rectification and filtration; the upper and lower arms of the half-bridge topology convert the direct current of the single-phase or three-phase power after rectification and filtration into a high-frequency square wave; and the upper and lower arms of the half-bridge topology receive a first pulse width modulation signal and a second pulse width modulation signal, and control the frequency of the high-frequency square wave, so as to adjust the voltage and power output by the transformer bank. Which is beneficial to solving the defects of a single high-power transformer.

摘要：【中文】本申请属于开关电源技术领域，涉及多机并联均流电路和数字化控制开关电源。所述多机并联均流电路包括：第一差模放大器电路、并机均流母线电路、保护电路、第二差模放大器电路、RC滤波电路以及处理器；所述第一差模放大器电路与所述并机均流母线电路电连接；所述第一差模放大器电路还与所述第二差模放大器电路电连接；所述并机均流母线电路与所述保护电路电连接；所述并机均流母线电路还与所述处理器连接；所述第二差模放大器电路与所述RC滤波电路电连接；所述RC滤波电路与所述处理器电连接。所述多机并联均流电路具有通用性强，成本低等优点。 【EN】The application belongs to the technical field of switching power supplies and relates to a multi-machine parallel current-sharing circuit and a digital control switching power supply. The multi-machine parallel current equalizing circuit comprises: the parallel current equalizing circuit comprises a first differential mode amplifier circuit, a parallel current equalizing bus circuit, a protection circuit, a second differential mode amplifier circuit, an RC filter circuit and a processor; the first differential mode amplifier circuit is electrically connected with the parallel machine current-sharing bus circuit; the first differential mode amplifier circuit is also electrically connected with the second differential mode amplifier circuit; the parallel current equalizing bus circuit is electrically connected with the protection circuit; the parallel machine current equalizing bus circuit is also connected with the processor; the second differential mode amplifier circuit is electrically connected with the RC filter circuit; the RC filter circuit is electrically connected with the processor. The multi-machine parallel current equalizing circuit has the advantages of strong universality, low cost and the like.

摘要：【中文】本申请属于开关电源技术领域，涉及开关电源的驱动电路、半桥拓扑开关电源及电子设备。所述开关电源的驱动电路包括：处理器、上臂驱动电路以及下臂驱动电路；所述处理器分别发送脉宽调制信号至所述上臂驱动电路和所述下臂驱动电路；所述上臂驱动电路包括：电位转换电路、图腾柱放电电路、半推挽式驱动电路以及场效应管栅极放电电路；所述处理器发送脉宽调制信号至所述电位转换电路；所述电位转换电路与所述图腾柱放电电路电连接；所述图腾柱放电电路与所述半推挽式驱动电路电连接；所述半推挽式驱动电路与所述场效应管栅极放电电路电连接；所述电位转换电路用于放大所述脉宽调制信号的电压值。所述开关电源的驱动电路布线简洁。 【EN】The application belongs to the technical field of switching power supplies, and relates to a driving circuit of a switching power supply, a half-bridge topology switching power supply and electronic equipment. The drive circuit of the switching power supply includes: a processor, an upper arm drive circuit and a lower arm drive circuit; the processor respectively sends pulse width modulation signals to the upper arm driving circuit and the lower arm driving circuit; the upper arm drive circuit includes: the circuit comprises a potential conversion circuit, a totem-pole discharge circuit, a half-push-pull type drive circuit and a field effect transistor grid discharge circuit; the processor sends a pulse width modulation signal to the potential conversion circuit; the potential conversion circuit is electrically connected with the totem-pole discharge circuit; the totem-pole discharge circuit is electrically connected with the half-push-pull type drive circuit; the half push-pull type driving circuit is electrically connected with the field effect transistor grid electrode discharging circuit; the potential conversion circuit is used for amplifying the voltage value of the pulse width modulation signal. The driving circuit of the switching power supply is concise in wiring.

摘要：【中文】在本发明提供的测试方法中，通过两张掩膜板在一衬底上形成第一测试结构；通过一张掩膜板在所述衬底上形成第二测试结构，所述第二测试结构与所述第一测试结构的结构相同；测量所述第一测试结构的电容，以得到第一电容；测量所述第二测试结构的电容，以得到第二电容；比较所述第一电容与所述第二电容的值，以得到双重图形工艺对电容的影响。由于所述第一测试结构与所述第二测试结构的结构相同，通过比较所述第一电容和所述第二电容，由此能够得到双重图形工艺对电容的影响。进一步的，通过测量所述第一电容和所述第一电容，能够得到较准确的所述第一电容和所述第二电容的值，由此，精确的得到双重图形技术对电容的影响。 【EN】In the testing method provided by the invention, a first testing structure is formed on a substrate through two mask plates; forming a second test structure on the substrate through a mask plate, wherein the second test structure has the same structure as the first test structure; measuring the capacitance of the first test structure to obtain a first capacitance; measuring the capacitance of the second test structure to obtain a second capacitance; and comparing the values of the first capacitor and the second capacitor to obtain the influence of the double-pattern process on the capacitor. Since the first test structure and the second test structure have the same structure, the influence of the double patterning process on the capacitance can be obtained by comparing the first capacitance and the second capacitance. Furthermore, by measuring the first capacitor and the first capacitor, more accurate values of the first capacitor and the second capacitor can be obtained, and therefore the influence of the double-pattern technology on the capacitor can be accurately obtained.

摘要：【中文】本发明实施例提供一种网络直播系统和方法，其中系统包括直播源、请求处理单元、中心处理单元、若干个客户端和若干个CDN节点；中心处理单元分别与直播源、请求处理单元和若干个CDN节点连接；请求处理单元与客户端连接；直播源用于向中心处理单元发送直播数据，请求处理单元用于接收任一客户端发送的直播请求，并基于直播请求获取请求内容；中心处理单元基于请求内容，从直播数据中选取指定直播数据，从若干个CDN节点中选取最优CDN节点，并将指定直播数据通过最优CDN节点发送至该客户端。本发明实施例提供的系统和方法，有效减低了直播时延，提高了直播播放质量，优化了直播观众的用户体验。 【EN】The embodiment of the invention provides a network live broadcast system and a network live broadcast method, wherein the system comprises a live broadcast source, a request processing unit, a central processing unit, a plurality of clients and a plurality of CDN nodes; the central processing unit is respectively connected with the live broadcast source, the request processing unit and the CDN nodes; the request processing unit is connected with the client; the live broadcast source is used for sending live broadcast data to the central processing unit, and the request processing unit is used for receiving a live broadcast request sent by any client and acquiring request content based on the live broadcast request; the central processing unit selects specified live broadcast data from the live broadcast data based on the request content, selects an optimal CDN node from the CDN nodes, and sends the specified live broadcast data to the client through the optimal CDN node. The system and the method provided by the embodiment of the invention effectively reduce the live broadcast time delay, improve the live broadcast quality and optimize the user experience of the live broadcast audience.

摘要：【中文】一种具有接地丢失保护功能的高边开关电路，包括接地丢失保护电路、复位电路、高边开关驱动电路和高边开关。高边开关驱动电路的输出端与高边开关的控制端连接；高边开关为半导体开关器件。接地丢失保护电路具有供电端、参考端、输出端和复位端，接地丢失保护电路的供电端和参考端分别与高边开关驱动电路的供电端和参考端连接，接地丢失保护电路的输出端与高边开关驱动电路的控制端连接，接地丢失保护电路的复位端与复位电路的输出端连接。接地丢失保护电路在高边开关电路发生接地丢失时向高边开关驱动电路输出关断控制信号，以关断高边开关。本发明在高边开关电路发生接地丢失时可避免高边开关工作在线性区。 【EN】A high-side switch circuit with a grounding loss protection function comprises a grounding loss protection circuit, a reset circuit, a high-side switch driving circuit and a high-side switch. The output end of the high-side switch driving circuit is connected with the control end of the high-side switch; the high side switch is a semiconductor switching device. The grounding loss protection circuit is provided with a power supply end, a reference end, an output end and a reset end, wherein the power supply end and the reference end of the grounding loss protection circuit are respectively connected with the power supply end and the reference end of the high-side switch driving circuit, the output end of the grounding loss protection circuit is connected with the control end of the high-side switch driving circuit, and the reset end of the grounding loss protection circuit is connected with the output end of the reset circuit. The grounding loss protection circuit outputs a turn-off control signal to the high-side switch driving circuit when the high-side switch circuit is in grounding loss so as to turn off the high-side switch. The invention can prevent the high-side switch from working in a linear area when the high-side switch circuit is in ground loss.

摘要：【中文】本发明公开了一种基于北斗导航与Hadoop技术的车辆追踪与调度系统。包括北斗卫星收发子系统、数据存储子系统、大数据处理子系统、调度子系统、查询子系统、地图显示子系统。它们分别负责收发车辆信息、存储车辆信息与查询结果、处理并分析数据、调度拥堵车辆与执勤车辆、查询车辆信息与轨迹、实现数据可视化。本发明采用Hadoop开源框架，可以实现云端存储与分布式计算，解决以往本地存储模式下处理速度慢、容错能力弱、扩展性差、存储成本高的不足，具有数据处理快、容错能力强、扩展性优、成本低等优点。可实现查询车辆信息、预测道路状况、调度拥堵车辆、分析车辆轨迹等功能，满足当前交通数据爆炸式增长背景下对车辆进行追踪与调度的需要。 【EN】The invention discloses a vehicle tracking and scheduling system based on Beidou navigation and Hadoop technology. The big data processing system comprises a big Dipper satellite receiving and transmitting subsystem, a data storage subsystem, a big data processing subsystem, a scheduling subsystem, an inquiry subsystem and a map display subsystem. The system is respectively responsible for receiving and transmitting vehicle information, storing the vehicle information and query results, processing and analyzing data, scheduling congested vehicles and duty vehicles, querying vehicle information and tracks and realizing data visualization. The invention adopts a Hadoop open source framework, can realize cloud storage and distributed computation, solves the defects of low processing speed, weak fault-tolerant capability, poor expansibility and high storage cost in the conventional local storage mode, and has the advantages of high data processing speed, strong fault-tolerant capability, excellent expansibility, low cost and the like. The functions of inquiring vehicle information, predicting road conditions, scheduling congested vehicles, analyzing vehicle tracks and the like can be realized, and the requirements of tracking and scheduling the vehicles under the background of explosive growth of current traffic data are met.

摘要：【中文】本发明属于教学实验平台技术领域，公开了一种基于STM32单片机的教学实验平台，所述基于STM32单片机的教学实验平台包括：供电模块、驱动程序加载模块、参数配置模块、中央控制模块、视频录制模块、存储模块、模拟测试模块、考核模块、教学分析模块、知识图谱构建模块、显示模块。本发明通过教学分析模块对各个维度的教学数据进行统计分析，能够在各个方面改善教学质量，能够有效提高教学水平；同时，通过知识图谱构建模块得到教学知识图谱的方式，能够在学习过程中随时确定相关性最强的知识点，从而实现学习过程中查漏补缺、举一反三的效果，降低出现学习盲区的概率，最终增强学习的有效性。 【EN】The invention belongs to the technical field of teaching experiment platforms, and discloses a teaching experiment platform based on an STM32 single chip microcomputer, which comprises: the device comprises a power supply module, a driver loading module, a parameter configuration module, a central control module, a video recording module, a storage module, a simulation test module, an examination module, a teaching analysis module, a knowledge map construction module and a display module. According to the invention, the teaching analysis module is used for carrying out statistical analysis on the teaching data of each dimension, so that the teaching quality can be improved in various aspects, and the teaching level can be effectively improved; meanwhile, knowledge points with the strongest correlation can be determined at any time in the learning process by the mode of obtaining the teaching knowledge map through the knowledge map building module, so that the effects of missing and filling in gaps and one-to-three actions in the learning process are realized, the probability of occurrence of learning blind areas is reduced, and the learning effectiveness is finally enhanced.

摘要：【中文】一种利用红外线热电堆阵列传感器做占用(Occupancy)感测装置，以方便需要占用感测的应用，包括一个具有宽视角镜片的热电堆阵列传感器与信号处理器。热电堆阵列传感器用以感测辐射体的热辐射，包括一宽视角红外线镜片、一热电堆阵列感测芯片，及一热敏电阻。信号处理器接收感测温度信号与传感器环境信号，通过模拟至数字转换与算法，得出量测辐射体与环境温度差值与预设值比较，输出数字控制信号。 【EN】An Occupancy (Occupancy) sensing device using infrared thermopile array sensor for facilitating Occupancy sensing applications includes a thermopile array sensor having a wide view angle lens and a signal processor. The thermopile array sensor is used for sensing the heat radiation of a radiator and comprises a wide-viewing-angle infrared lens, a thermopile array sensing chip and a thermistor. The signal processor receives the sensed temperature signal and the sensor environment signal, compares the difference value of the temperature of the measuring radiator and the environment temperature with a preset value through analog-to-digital conversion and algorithm, and outputs a digital control signal.

摘要：【中文】本发明涉及喷焊工艺域，具体是一种铜溜槽表面火焰喷焊工艺，其具体工艺步骤如下：S1：喷砂处理；S2：保温；S3：喷烤；S4：测试温度；S5：重复喷焊；由于铜的热膨胀系数为17.5×10^‑6度与镍13.0×10^‑6度相近，且Ni基涂层可耐1400℃高温，通过将铜基体加热至900℃后使得表面为润湿状再进行火焰喷焊，使得铜基体表面可与Ni60粉末交融，不会出现容易分离、崩开的现象，使得焊层与铜基体形成良好的冶金结合，硬度可达到650HV，耐高温冲刷性能也得到极大的提升。 【EN】The invention relates to a spray welding process field, in particular to a flame spray welding process for the surface of a copper chute, which comprises the following specific process steps: s1: carrying out sand blasting treatment; s2: preserving heat; s3: spraying and baking; s4: testing the temperature; s5: repeating spray welding; since the coefficient of thermal expansion of copper is 17.5X 10^‑6Degree and nickel 13.0X 10^‑6The Ni-based coating can resist the high temperature of 1400 ℃, the surface of the copper substrate is in a wet state after the copper substrate is heated to 900 ℃, and then flame spray welding is carried out, so that the surface of the copper substrate can be blended with Ni60 powder, the phenomena of easy separation and cracking can not occur, a welding layer and the copper substrate form good metallurgical bonding, the hardness can reach 650HV, and the high-temperature scouring resistance can be greatly improved.