Table of Content

25 December 2022, Volume 42 Issue 6

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Research on Influence of Temperature and Pressure in SMD Pressure Transducer Temperature Characteristics Calibration Device

GAO Bing-tao, Liu Yi, DONG A-bin, HUO Rui-dong, TIAN Jun-hong, ZHONG Shan

2022, 42(6):  1-7.  doi:10.12060/j.issn.1000-7202.2022.06.01

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The temperature and pressure parameter simulation analysis and experimental research on the SMD pressure transducer temperature characteristics calibration device have been carried out.The results show that under the absolute pressure of 2 kPa and 500 kPa pressure points,the temperature distribution of the calibration chamber and pressure pipeline of the chip pressure sensor in the temperature range of -50 ℃~100 ℃ meets the requirements for use.The temperature isolation is achieved between the standard pressure source and the high and low temperature calibration chamber.The accuracy of the standard pressure value is ensured when calibrating the temperature response characteristics of the SMD pressure sensor.

Research on Verification Method of a Three-axis Turntable

YANG Hai-yun, QIU Zhao-hui, SUN Jun, FAN Lei, QU Xin-yan

2022, 42(6):  8-12.  doi:10.12060/j.issn.1000-7202.2022.06.02

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The three-axis turntable is one of the important equipment for testing inertial platforms and rate gyroscopes,and its metrology support  method has not been perfected in recent years.The measurement performance requirements and general technical requirements of a three-axis turntable have been analyzed,the verification items have been determined,the special standard equipment and special tooling have been configured,the standardized verification method was studied,quantity-value dissemination relationships were constructed，the measurement uncertainty of position error was evaluated as a case and the verification and result analysis were carried out,and the metrology support problem of a certain type of three-axis turntable was solved.

Research on Pulse Voltage Testing and Calibration of Wide-bandgap Semiconductor Devices

RAO Zhang-fei, QIN Kai-liang, XUE Dong, JIN Hong-xia

2022, 42(6):  13-21.  doi:10.12060/j.issn.1000-7202.2022.06.03

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In terms of the pulse test and calibration requirements of the third-generation wide-bandgap (WBG) semiconductor devices.Based on the research of double pulse test (DPT) method and principle of wide-bandgap semiconductor devices，The wide-bandgap semiconductor device test equipment technology status at domestic and foreign are analyzed.The precision calibration problem of 3 kV/50 μs pluse voltage are presented.The pulse high voltage calibration status and calibration method are researched.Through the mechanism analysis design and simulation of the resistive voltage divider，a precision voltage divider withstand voltage of 3 kV,rise time of 140 ns and amplitude linearity of 0.03% is developed.The self-developed pulse voltage divider is used to calibrate the pulse voltage of the semiconductor discrete device test equipment.The uncertainty of the calibration result is 0.5%，the needs of pulse high voltage calibration are satisfied.

Design and Calibration of Acoustic Sensor of Particle Impact Noise Detector

BAI Tian, YAN Lei, TIAN Jun-hong

2022, 42(6):  22-27.  doi:10.12060/j.issn.1000-7202.2022.06.04

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Working principle and signal characteristics of the particle impact noise detector were analyzed.According to the sensitivity index requirements of the key components of the acoustic sensor,a structural design method of the sensor’s sensitive element based on the resonance frequency analysis of piezoelectric ceramics was presented.According to the working characteristics of acoustic sensors,a sensitivity calibration method of face-to-face test was proposed to evaluate the performance parameters of acoustic sensors.The test results show that the calibration method is easy to operate,and the measurement uncertainty of 2.0 dB could be got,which could effectively verify the resonance frequency and sensitivity of the acoustic sensor,and provide a metrological guarantee for the reliability of the remainder detection.

Research on Calibration Method of Molten Steel Level Controller Based on Key Characteristic Parameters

YANG Tu-qiang

2022, 42(6):  28-33.  doi:10.12060/j.issn.1000-7202.2022.06.05

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Molten steel level controller is the key quality control point to prevent steel overflow and breakout accidents,and it is an important technical means to ensure the continuous casting production of square billet.The four important characteristic parameters of the process control accuracy,repeatability,linearization and water gap width of the detection range have a significant impact on the measurement characteristics of the molten steel level controller.Through studying the calibration method for the characteristic parameters,the scientificity and accuracy of the molten steel level control can be effectively improved.

Industrial Photogrammetry Accuracy Testing of New Retro-Reflective Targets

DOU Shi-hao, HUANG Gao-shuang, WANG Wei-feng, HUANG Gui-ping, WANG Xin-ping

2022, 42(6):  34-40.  doi:10.12060/j.issn.1000-7202.2022.06.06

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Aiming at the problem of low measurement accuracy caused by the poor roundness of the traditional type of retro-reflective target,a new type of retro-reflective target is designed,that is,the round hole mold slice with small roundness error is covered on the glass bead reflective film,and the new type of retro-reflective target is tested to reduce the roundness error of the traditional type retro-reflective target by an average of 0.03 mm.The image point center positioning model of the new retro-reflective target is established,the influence of the thickness of the mold slice on the center positioning accuracy of the image point is analyzed,and the accuracy of the new retro-reflective target is evaluated from the aspects of internal accord accuracy and external accord accuracy.The experimental results show that the repeatability measurement accuracy and standard length measurement accuracy of the new retro-reflective target are improved by 25.0% and 28.1% respectively compared with the traditional retro-reflective target,the high measurement performance of the new return light reflection mark is fully proved.

Measurement Method of Low Frequency Angular Vibration Using Circular Grating and Windowed FFT

JIN Ran, CHEN Yong-jiu, ZHANG Jun, ZHU Yong-xiao, LI Wei

2022, 42(6):  41-46.  doi:10.12060/j.issn.1000-7202.2022.06.07

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Through studying the measurement of angular vibration parameter in the field of inertia and dynamic torque calibration.An angular vibration measurement and data analysis method using circular grating and windowed FFT is proposed.Firstly,collecting and storing the signal the circular grating sensor output by the high-speed data acquisition card,through the way of level accumulation obtaining the waveform contour.Then the synthetic waveform is sampled and which is calculated by windowed FFT.Finally,the angular acceleration parameters are obtained.An experiment is designed to test the measuring device with a standard angle shaking table,the experimental results show that the relative error between the angular acceleration measured by this method and the standard value is less than 2.5%，and the repeatability of angular acceleration is less than 0.3%，and the the uncertainty of the measurement results is evaluated.

Adaptive Closed-Loop Drive of Piezoelectric Sensor and Circuit Implementation

LIU Yi, GAO Bing-tao, WANG Kuo-chuan, LI Xiao-guang

2022, 42(6):  47-51.  doi:10.12060/j.issn.1000-7202.2022.06.08

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An adaptive closed-loop driving method for piezoelectric sensors is designed,and its circuit implementation is introduced from the aspects of anti-saturation charge amplifier,band-pass filter,shaping circuit and power amplifier.It is theoretically demonstrated that the system meets the self-oscillation condition.The feasibility of this method is verified by experiments.The method only needs a unipolar power supply to process AC signals,and provides positive and negative square wave bipolar driving,which increases the driving energy by 4 times compared with unipolar driving,and greatly simplifies the circuit.Compared with open-loop driving,this method can adapt to the natural frequency of the sensor,improve the driving efficiency and reliability,and be universal.

Review of Infrared Sea Surface Small-target Detection Algorithm

ZHA Yue, Tang Ye

2022, 42(6):  57-65.  doi:10.12060/j.issn.1000-7202.2022.06.10

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Infrared imaging technology is a passive detection technology that has been widely used in various fields such as land,sea,air and space,with the advantages of strong resistance to external interference and all-weather target measurement.Infrared imaging tracking and measurement systems have been used in a large number of applications in the measurement of surface vehicle parameters.Infrared sea surface small-target detection technology is an important part of processing infrared measurement images。The accuracy and efficiency of the interpretation results can be improved with suitable detection methods.By analyzing the characteristics of the background and target in the infrared sea surface small target image and the technical difficulties of the complex recognition of infrared sea surface small-targets,two infrared small-target algorithms based on deep learning and traditional methods are compared.The principle,steps and advantages of the traditional algorithms are elaborated,and the future development trend of infrared small-target detection algorithms is analyzed.

Research on Infrared Image Detail Enhancement Algorithm and FPGA Implementation Method

HE Suo-chun, ZHOU Yang, DANG Xue-chen, DONG Fei, LIU Yong

2022, 42(6):  66-69.  doi:10.12060/j.issn.1000-7202.2022.06.11

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Based on the traditional infrared enhancement method,a new weight-based infrared image details enhancement algorithm is proposed,which fully utilizes the histogram characteristics to enhance the contrast of infrared image while keeping the image details.In various complicated scenes with obvious temperature changes,the detail information can be guaranteed in the image while suppressing the background noise with this algorithm which has good enhancement and high real-time performance.After experimental verification,the target contrast is improved greatly,the target details is emerged effectively with this algorithm,and the signal-to-noise ratio is increased,which has good practicability.

Design of a Micro-angle Rotation Mechanism

CHEN Wei, SONG Xiao-yan, LIU Bing, WANG Jin, WANG Yi-bing

2022, 42(6):  70-72.  doi:10.12060/j.issn.1000-7202.2022.06.12

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Before functional testing，the gyroscope pendulum micro-angle and the PSD (Position Sensitive Detector)output voltage should be demarcated.An applied micro-angle rotation mechanism was designed to mock gyroscope pendulum micro-angle rotation function，in which proportion-spring and thread transmission are applied to ascertain the coefficient between the gyroscope pendulum and the PSD output voltage.The theory and calculation method about micro-angle rotation mechanism was introduced in detail.Rationality to the mechanism has been proved through specific experiment.

Development of Field Calibration Device for Small Range Torque Based on Principle of Neutral Equilibrium

HUANG Qi-gang, LI Tong, LI Cong, WU Chun-chan

2022, 42(6):  73-78.  doi:10.12060/j.issn.1000-7202.2022.06.13

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Aiming at the high precision and stability requirements of the liquid rocket engine high-speed centrifugal pump water test system,a small-range torque field calibration device based on the principle of casual balance was developed.The realization principle,technical index and overall design of the whole set of calibration device are introduced.The key technology and test verification of the torque field calibration device design are mainly introduced.The verification results show that the device meets the design index requirements and meets the field calibration application requirements.

Research and Application of Quantitative Hierarchical Measurement in a Ground Service System

ZHAO Ming-chao, MENG Jing, CHANG Zhi-xin, GUO Ming-jie, ZHANG Bo

2022, 42(6):  79-83.  doi:10.12060/j.issn.1000-7202.2022.06.14

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The measurement support is the key way to grasp the weapon performance and improve reliability of the system.Considering with factors such as large number of measuring instruments，weak measurement support capability and immature measurement system in a ground service system，combined with domestic and foreign measurement management requirements and application practices，a hierarchical measurement method is proposed to meet the measurement support requirements of weapon system equipment，and an important reference for construction of the military’s measurement support system is provided.

Application of Microservice Architecture in LIMS Design

YANG Kun, LI Hua-chang, SHI Ye-hong

2022, 42(6):  84-87.  doi:10.12060/j.issn.1000-7202.2022.06.15

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The microservice architecture reconstructs the enterprise-level service capability by splitting the system functions,and the problems of weak business isolation,high system coupling,high code maintenance cost and poor scalability existing in the traditional single application architecture is solved.The basic concepts,composition,advantages and implementation methods of microservice architecture is introduced,and the design and application scheme of microservice architecture in laboratory information management system is proposed.The laboratory information management system combined with the microservice architecture can effectively ensure the sustainability of enterprise business and improve enterprise management capabilities.

Discussion on Integrated Management of Measuring Instrument in Aerospace System

FENG Zhi-jun, MIAO Chun-lin, YANG Guo-hui, PEI Ya-peng, LIU Ke, DU Jun-peng

2022, 42(6):  88-91.  doi:10.12060/j.issn.1000-7202.2022.06.16

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Metrology is an important technical basis for development of space carrier and weapon types,which is related to model quality and reliability. Model quality is also ensured by measuring instrument. Based on the years of management experience of metrological instruments of the first Aerospace Institute,the current situation and shortcomings of metrological management is mainly introduced，the operation mode of integrated management of metrological instruments is put forward，and a reference mode is provided for the integrated management of metrological instruments in military enterprises.