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2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)最新文献

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Design and application of Temperature Sensor Intelligent Verification System Based on “Cloud + Terminal” framework 基于“云+终端”框架的温度传感器智能验证系统设计与应用
Pub Date : 2021-10-29 DOI: 10.1109/ICEMI52946.2021.9679650
Hanling Tan, Qingbiao Zou, Minghui Wang
Heavy workload, manual setting of temperature tank temperature and manual input of verification data broadly exist in the verification of temperature sensors in the Institute of Meteorological Measurement Guangdong Province. To solve these problems, this paper proposes an intelligent verification system of temperature sensor based on framework of “cloud + terminal ”. The verification process can be operated without any manual involvement, the verification data can be automatically input into the cloud database, the unqualified sensors can be automatically identified, and the verification certificate can be printed and managed in a unified manner. The results show that the automatic system realizes the automatic verification of temperature sensor, avoids the tedious manual recording process, and effectively reduces the verification timey, which greatly improves the verification efficiency. The system has been successfully put into use in the Institute of Meteorological Measurement Guangdong Province.
广东省气象测量研究院对温度传感器的检定工作普遍存在工作量大、手动设定温度槽温度和手动输入检定数据等问题。针对这些问题,本文提出了一种基于“云+终端”框架的温度传感器智能验证系统。验证过程无需人工操作,验证数据自动录入云数据库,自动识别不合格传感器,统一打印和管理验证证书。结果表明,该自动化系统实现了温度传感器的自动验证,避免了繁琐的人工记录过程,有效减少了验证时间,大大提高了验证效率。该系统已在广东省气象测量研究所成功投入使用。
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引用次数: 0
Design and Analysis of the Magnetic Circuit and Vibration of LMLP for Mass Transfer LMLP传质磁路及振动设计与分析
Pub Date : 2021-10-29 DOI: 10.1109/ICEMI52946.2021.9679663
Shinan Cao, Pingjuan Niu, Qiang Liu, Jin Li, Q. Gao, Cong Peng
Micro LED is the main development direction for the future display as it has a fast response, low power consumption, high reliability and long life. The production and application of the Micro LED were restricted as the problem of mass transfer. To improve the speed of the mass transfer, First, a 6-DOF Lorentz magnetic levitation platform was designed for mass transfer. Second, the magnetic circuit of the LMLP was established, the magnetic density characteristics in the gap was analyzed, then the dynamics model of the LMLP created. with the 3-d model, the amplitude and frequency by finite element analysis. The result showed that the LMLP has low amplitude and frequency.
微型LED具有响应快、功耗低、可靠性高、寿命长等特点,是未来显示屏的主要发展方向。由于传质问题,制约了微型LED的生产和应用。为了提高传质速度,首先设计了6自由度洛伦兹磁悬浮平台进行传质;其次,建立了LMLP的磁路,分析了间隙内的磁密度特性,建立了LMLP的动力学模型;结合三维模型,对振幅和频率进行有限元分析。结果表明,LMLP具有较低的幅值和频率。
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引用次数: 2
Simulation and Road Test of a Traveling Working Radar 移动工作雷达仿真与道路试验
Pub Date : 2021-10-29 DOI: 10.1109/ICEMI52946.2021.9679602
Xiaohong Wang, Huiyue Yang, F. Hu
In order to understand the structural and mechanical properties of a moving radar, the simulation analysis and prototype test of the whole radar are carried out. According to the characteristics of the product, the test scheme of the sports car is designed, and the test data are collected and analyzed to extract the vibration input load. The safety margin of the structure design is verified by comparing and analyzing the results of simulation analysis and sports car test. The vibration input load obtained by the sports car is less than the load recommended by the relevant military standards, and the structural optimization design should be based on the measured vibration load. The research results of this paper have a certain reference significance for the development of the mechanical performance simulation and testing of the vehicle moving working radar.
为了了解运动雷达的结构和力学性能,对整个雷达进行了仿真分析和样机试验。根据产品的特点,设计了跑车的试验方案,并对试验数据进行采集和分析,提取振动输入载荷。通过仿真分析和跑车试验结果的对比分析,验证了结构设计的安全裕度。跑车获得的振动输入载荷小于相关军用标准推荐的载荷,结构优化设计应以实测振动载荷为依据。本文的研究成果对开展车辆运动工作雷达的力学性能仿真与测试具有一定的参考意义。
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引用次数: 0
Low Spurious Waveform Synthesis Based on Digital Resampling 基于数字重采样的低杂散波形合成
Pub Date : 2021-10-29 DOI: 10.1109/ICEMI52946.2021.9679594
Wenhao Zhao, Shulin Tian, Ke Liu, Lei Huang, Guangkun Guo, Qiong Wu
Arbitrary waveform generator (AWG) plays an important part in electronic measurement area. As technology continues to evolve, the need to synthesize signals with higher bandwidth and lower spurious came up. However, certain limitations exist in current digital waveform synthesis methods, which leads to high spurious in the output waveform. Direct Digital Waveform Synthesis (DDWS) method's image frequency's position isn't strictly fixed and hard to restrain due to the change of the sampling clock frequency; Direct Digital Frequency Synthesis (DDFS) method needs the phase accumulator's bits be large enough to obtain a high frequency resolution of the output waveform, which brings in the phase truncation error and adds spurious component. Therefore, in this paper we analyzed the advantages of the two methods and proposed a waveform synthesis method based on digital resampling, waveform samples are determined in variable clock domain, then use resampling filter based on Farrow structure to realize the transform from variable sample rate to fixed sample rate, achieving waveform synthesis method with low spurious. As the simulation results indicate, our new method has huge advantage over DDWS and DDFS.
任意波形发生器(AWG)在电子测量领域占有重要地位。随着技术的不断发展,需要合成具有更高带宽和更低杂散的信号。然而,目前的数字波形合成方法存在一定的局限性,导致输出波形具有很高的杂散度。直接数字波形合成(DDWS)方法的图像频率位置不严格固定,由于采样时钟频率的变化难以抑制;直接数字频率合成(DDFS)方法需要相位累加器的位元足够大,以获得高频率分辨率的输出波形,这带来了相位截断误差,增加了杂散分量。因此,本文分析了两种方法的优点,提出了一种基于数字重采样的波形合成方法,在变时钟域确定波形样本,然后利用基于Farrow结构的重采样滤波器实现从变采样率到固定采样率的转换,实现低杂散的波形合成方法。仿真结果表明,与DDWS和DDFS相比,该方法具有很大的优势。
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引用次数: 0
Fault Detector for Wind Sensor Based on Embedded System 基于嵌入式系统的风传感器故障检测
Pub Date : 2021-10-29 DOI: 10.1109/ICEMI52946.2021.9679621
Xiao Chen, Kai Zhang
As one of the mainstream surface meteorological observation instruments in my country, the wind sensor can detect the wind direction and wind speed of the environment in real time and play an important role in the comprehensive meteorological observation system. However, owing to its 24 hours of uninterrupted work in the field all year round, various components often fail during actual use, which affects the accuracy of meteorological data. Therefore, in response to the demand for rapid detection of wind sensor faults, an embedded portable wind sensor fault detector is developed, which can realize fault detection and daily inspection of wind sensors. The detector adopts a portable box design that is convenient to carry. STM32F103 was used as the main control unit chip, and the microcontroller data bus was isolated from the meteorological element processing circuit bus through a four-channel digital isolator. The user operates the control instrument through a good human-computer interaction interface, and accurately realizes the collection of wind direction and wind speed signals. According to the fault detection method of the wind sensor, the accurate location of the fault point of the wind sensor can be realized. Tests show that the instrument can quickly locate the fault point of the wind sensor, and the fault diagnosis accuracy rate is up to 93%.
风传感器可以实时探测环境的风向和风速,是我国主流地面气象观测仪器之一,在综合气象观测系统中发挥着重要作用。然而,由于其在野外常年24小时不间断工作,在实际使用过程中,各种部件经常出现故障,影响了气象数据的准确性。因此,针对快速检测风传感器故障的需求,开发了一种嵌入式便携式风传感器故障检测器,可实现风传感器的故障检测和日常巡检。探测器采用便携箱型设计,携带方便。采用STM32F103作为主控单元芯片,通过四通道数字隔离器将单片机数据总线与气象要素处理电路总线隔离。用户通过良好的人机交互界面操作控制仪表,准确实现风向、风速信号的采集。根据风传感器的故障检测方法,可以实现风传感器故障点的准确定位。试验表明,该仪器能快速定位风传感器的故障点,故障诊断准确率高达93%。
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引用次数: 0
Power Input Characteristic Measurement System for Airborne Electrical Equipment Based on Labview 基于Labview的机载电气设备功率输入特性测量系统
Pub Date : 2021-10-29 DOI: 10.1109/ICEMI52946.2021.9679592
Jianying Liu, Shuai Yang, Renliang Ren
The power input characteristics of airborne electrical equipment directly affect the stability and reliability of the aircraft power grid. This characteristic must meet the requirements of the international standard ISO-1540. In view of the airworthiness certification of airborne electrical equipment, a detection system for the power input characteristics of airborne AC electrical equipment based on virtual instrument technology is designed. The detection model is determined. The system adopts NI high-speed data sampling card and labview, and automatically compares the detection results with standard indicators. In order to ensure the accuracy of the power input characteristic measurement, the system has the function of detecting the quality of the power supply. Experimental results show that the system can provide rapid testing methods for airworthiness certification of airborne electrical equipment.
机载电气设备的电源输入特性直接影响到飞机电网的稳定性和可靠性。该特性必须满足国际标准ISO-1540的要求。针对机载电气设备适航审定工作,设计了基于虚拟仪器技术的机载交流电气设备电源输入特性检测系统。确定检测模型。系统采用NI高速数据采集卡和labview,自动将检测结果与标准指标进行比对。为了保证电源输入特性测量的准确性,系统具有电源质量检测功能。实验结果表明,该系统可为机载电气设备的适航审定提供快速的测试方法。
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引用次数: 0
Design and Implementation of In-situ Automatic Test for Radio Altimeter Based on an Altitude Simulator 基于高度模拟器的无线电高度表原位自动测试设计与实现
Pub Date : 2021-10-29 DOI: 10.1109/ICEMI52946.2021.9679607
Hongchun Wang, Tian Wen, Yuhai Wang
To realize the automatic test of the radio altimeter system, a new automatic test method is designed. This method is based on a certain height simulator, takes the computer as the control core, and relies on a digital measuring instrument. It can not only test the overall performance of the object under test but also detect the specific fault of the object under test. The test process is controlled by software programming, and a personalized human-computer interaction interface is designed, which realizes the automation and intelligence of the test. The scheme has been validated by system tests and proved to be of great practical value.
为实现无线电高度计系统的自动测试,设计了一种新的自动测试方法。该方法以某高度模拟器为基础,以计算机为控制核心,以数字测量仪为依托。它不仅可以测试被测对象的整体性能,还可以检测被测对象的特定故障。测试过程由软件编程控制,并设计了个性化的人机交互界面,实现了测试的自动化和智能化。该方案经系统测试验证,具有一定的实用价值。
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引用次数: 0
Design of Ultra-wideband Power Amplifier Module 超宽带功率放大器模块的设计
Pub Date : 2021-10-29 DOI: 10.1109/ICEMI52946.2021.9679605
Yubin Yang, Qinglong Zhang, Chunqing Xu, E. Chen
This paper introduces a design of ultra-wideband power amplifier module, focusing on constant voltage and constant current supply circuit design, bias tee design, broadband PCB transmission line matching design. The supply circuit design and bias tee design are proposed which enhance the power gain and output power. Broadband PCB transmission line matching design can reduce transmission line loss and improve module gain. Design index: The frequency range covers 100kHz∼26.5GHz, transmission gain ≥ 10dB, maximum input power ≥ 8dBm, maximum output power ≥ 20dBm. According to the design proposal, the ultra-wideband power amplifier module is realized. The vector network analyzer is used to test the relevant indexes of the power amplifier module, including frequency range, gain, maximum input power, maximum output power, input return loss, output return loss. The test consequences of the power amplifier module satisfy the design requirements.
本文介绍了一种超宽带功率放大器模块的设计,重点介绍了恒压恒流供电电路的设计、偏置三通的设计、宽带PCB传输线的匹配设计。提出了提高功率增益和输出功率的供电电路设计和偏置三通设计。宽带PCB传输线匹配设计可以降低传输线损耗,提高模块增益。设计指标:频率范围100kHz ~ 26.5GHz,传输增益≥10dB,最大输入功率≥8dBm,最大输出功率≥20dBm。根据设计方案,实现了超宽带功率放大模块。矢量网络分析仪用于测试功放模块的相关指标,包括频率范围、增益、最大输入功率、最大输出功率、输入回波损耗、输出回波损耗。功率放大模块的测试结果满足设计要求。
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引用次数: 1
Low-power Design and Implementation of An Ice-based Towed Ocean Upper Layer Profiling Buoy 冰基拖曳海洋上层剖面浮标的低功耗设计与实现
Pub Date : 2021-10-29 DOI: 10.1109/ICEMI52946.2021.9679521
Yabin Men, Junyi Wang, Xin-peng Wang
Arctic sea-ice-air interactions play a crucial role in the study of global climate change. The ice-based towed upper layer ocean profiling buoy has been developed for the need of long-term acquisition of atmospheric, sea ice and ocean profiling observations in the Arctic region. This paper describes the composition of the system, the scheme of design an efficient power management, including microcontroller design, unit circuit power management, system workflow, and uses the Iridium 9602 module to achieve remote transmission of data in real time. The PCF2129 real-time clock chip interrupt output is used to realize turning on and off the system power system, achieving a very low standby power consumption of only 85uA. After the system is developed and deployed in the Arctic, it has been proved that it works stably and reliably by long-term operation and has realized low power consumption design.
北极海-冰-气相互作用在全球气候变化研究中起着至关重要的作用。为满足北极地区大气、海冰和海洋剖面观测的长期采集需求,研制了冰基拖曳式上层海洋剖面浮标。本文介绍了系统的组成,设计了高效的电源管理方案,包括单片机设计、单元电路电源管理、系统工作流程,并采用铱9602模块实现数据的远程实时传输。采用PCF2129实时时钟芯片中断输出,实现系统电源系统的通断,实现待机功耗极低,仅85uA。该系统在北极开发部署后,经长期运行证明,工作稳定可靠,实现了低功耗设计。
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引用次数: 1
Research on Modeling and Simulation of Train Network Fusion System Based on OPNET 基于OPNET的列车网络融合系统建模与仿真研究
Pub Date : 2021-10-29 DOI: 10.1109/ICEMI52946.2021.9679497
Bozhen Ma, Changxian Li, Dingzhu Tang
The traditional train communication network structure is a bus-type network structure with small bandwidth and low throughput. Each network system exists independently of each other, causing problems such as increased network equipment, increased costs, and complex network wiring. Switched real-time Ethernet has the characteristics of high speed, high compatibility and real-time performance. It can integrate multiple network systems into one network to data communication, and can well solve the above problems. This paper focuses on the research on the fusion technology of Ethernet-based train TCMS network and PIS network and uses OPNET network simulation software to simulate the network performance of the converged network, and analyzes the network performance according to the simulation results.
传统的列车通信网络结构是总线型网络结构,带宽小,吞吐量低。各网络系统相互独立存在,造成网络设备增加、成本增加、网络布线复杂等问题。交换式实时以太网具有高速、高兼容性和实时性等特点。它可以将多个网络系统集成到一个网络中进行数据通信,很好地解决了上述问题。本文重点研究了基于以太网的列车TCMS网络与PIS网络的融合技术,利用OPNET网络仿真软件对融合网络的网络性能进行了仿真,并根据仿真结果对网络性能进行了分析。
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引用次数: 0
期刊
2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)
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