Abstract:Graphene is a novel two-dimensional nanomaterial with remarkable electrical and mechanical properties, which has attracted considerable attention. Recently, a series of studies on the resonant characteristics of graphene and its applications are widely investigated, which indicates the great potential of graphene for the field of resonant nano-eletromechanical sensors. This paper briefly introduces the excellent physical properties of graphene material and several typical preparation technologies for graphene. Then, the paper emphatically reviews the experimental and theoretical studies of graphene resonators as well as its application process on the detection of pressure, acceleration, mass and etc. The main aspects are as follows: resonance sensitive structures based on graphene, sensing mechanisms and research methods and etc. And the possible challenges and development prospects of graphene-based resonant nano-electromechanical sensors are also analyzed.

Abstract:Penetrating ammunition can be used to attack enemy underground works, large ships, important bridges and other high-value targets, which has important tactical value. As the core component of all kinds of high-speed penetrating ammunition, high-g accelerometer is the key to achieve accurate explosion point and to reach optimal damage efficiency. Testing and calibration equipment for extreme adverse environment test is an important means to support the development of military products, core devices, reliability verification and evaluation. Western countries impose strict embargo and technical blockaded on our country. This paper summarized the research progress and development trend of high-g accelerometer and extreme environment test equipment at home and abroad, analyzed the difficulties and core problems of this technology in Chinese, pointed out feasible solutions, breakthroughs and research trends, provided reference and basis for the development of high-g accelerometer, extreme environment test and measurement calibration technology.

Abstract:The hyperspectral industry application, hyperspectral imaging technology and its development are introduced. Hyperspectral imaging data has been used in product sorting, precision agriculture, environmental monitoring, cultural relics preservation, criminal investigation, camouflage identification and other industries. However, the traditional spectroscopic imaging methods, such as prism grating dispersion, continuous tunable filter and Fourier transform interferometry, are still mainly used as scientific research equipment because of their high cost, large volume and slow speed. To promote massive industrial application, spectral imaging technology with compact size, low cost and fast speed is needed. Computational tomography, compressive coding and CQDs (colloidal quantum dots) spectral imaging still need theoretical breakthroughs and are difficult to be applied in a short time. The integral field unit and the discrete sampling spectral imaging technology are simple in principle and mature in technology, which can be used in the occasion of low spatial resolution requirements. The compound-eye filter and the pixel filter spectral imaging technology can achieve real-time performance on the basis of balancing spectral resolution and spatial resolution through a single integrated pixel filter, and can greatly reduce volume and cost.

Abstract:Fuel level measurement has always been an import issue in aircraft fuel system. Optical fiber fuel level sensors have attracted more and more attentions in aircraft fuel level measuring field because of its intrinsic safety. This paper classifies all the optical fiber fuel level sensors into two types according to the way to modulate the optical parameters: light intensity modulation and wavelength modulation. Not only is the principle of the sensors introduced, but also the current development status is presented. Finally, the application tendency is discussed.

Abstract:A vertically coupled suspended silicon nitride resonator sensor is experimentally demonstrated, which consists of a bottom-layer un-suspended access waveguide and a top-layer suspended microdisk cavity. The presented sensor can realize a high device sensitivity with a good mechanical stability. For a 40-μm-radius disk, more than 104 quality factor at a wavelength of 1548.98 nm can be obtained with a moderate free-spectral range of 5.66 nm. The device sensitivity is measured with covering different organic liquids, and the sensitivity is about 554 nm/RIU. The fabrication of the proposed three-dimensional sensor is compatible with conventional photolithography process, which would benefit its optical sensing applications.

Abstract:Since the 1990s, study of MEMS inertial device became more and more popular.MEMS inertial sensors began to get a wide range of business applications . In this paper, some recent research results at home and abroad are classified and summarized, respectively for MEMS acceleration sensor, MEMS gyroscope ,MIMU(Micro Inertial Messurement Unit)and inertial microsystem of literature review and analysis, and get the conclusion of MEMS inertial sensor development trend, the future development of MEMS inertial device mainly has four directions: high precision, to adapt to the application requirements of higher precision and intelligent technology;Miniaturization for portable equipment installation; High integration to achieve multiple functional integration;High adaptability, to adapt to complex environment, to broaden the scope of application.

Abstract:Special sensors are indispensable in major national projects. The paper first introduces the development plans and strategies of major countries in the special sensors, then describes the development of China and the gap with foreign countries. From the direction of high temperature pressure sensor, micro-displacement sensor, quantum magnetic sensor, vibration sensor, humidity sensor, etc., the level of main research units and main products at home and abroad are compared, and the development trend of special sensors in China is predicted and suggested.

Abstract:From the viewpoint of the development of the sensor technology, and based on the national demand to develop the sensor industrialization from the aerospace power strategy, the current advanced sensor technologies, such as pressure sensor, temperature and heat flux sensor, high precision MEMS gyroscope, gas sensor, optical fiber sensor and wireless passive sensor, were introduced, and the prospects of the future sensor technology development were given.

Abstract:Compared with the current research status of calibration methods of sensor performance in the field of aviation in China and abroad, combining with the development direction of Chinese aviation technology, the necessity of calibration of sensor performance under complex environment is expounded, and the development goal of future sensor calibration is emphatically analyzed.

Abstract:The paper proposed and studied a Fabry-Perot interferometer (FPI) sensor by splicing a photonic crystal fiber (PCF) to a well-cleaved single-mode fiber (SMF), preparing a SMF-PCF-SMF structure, and the section of PCF was the cavity. The spectrum wavelength interval was 2.18 nm and its contrast was up to 13.12 dB. Temperature was investigated experimentally in the range of 50 ℃ ~ 400 ℃ with temperature-rise and temperature-drop process. The temperature sensitivity is 12.3 pm/℃ and its linearity is greater than 0.993. The proposed sensor could offer some excellent features such as low cross-sensitivity, good temperature stability and linearity, making it attractive in the areas of industrial production, aerospace and biomedicine.

Abstract:High temperature strain gauge is the main measurement sensor of high temperature structure strength test, fatigue test and life evaluation. The accuracy of gage factor affects the authenticity of strain correction data in high temperature strain test. Based on the analysis of the principle of the gage factor, it is clear that the gage factor is the relationship between the output of the strain gauge and the strain. The influence factors of standard strain were determined through the model analysis that use the four point simply supported beam and pure bending moment steel beam to test gage factor. The influencing factors of gage factor calibration include the test beam size and the axial force of test beam. The test results of practical gage factor show that the factor of simple beam is slightly larger and the dispersion is obviously larger. The output of strain gage at high temperature is related to the load strain, the thermal output of strain gage, the size change of test beam, the change of elastic modulus and the change of friction force. The method of eliminating thermal output is discussed. Theoretically, the dimensional change and elastic modulus change of the simply supported beam at temperature can be caused error as high as 22%. The temperature influence error is very small because the steel beam is the rigid closed static mechanical balance system. Using self-developed free frame high temperature bare grid strain gage and high temperature ceramic adhesive, the theoretical analysis is verified by testing the sensitivity coefficient with the change of temperature, the theoretical analysis is verified by measuring the gage factor change with temperature which use the simply supported beam and steel beam.

Abstract:With the application of stealth technology and the development of multimode detection technology, the photoelectric countermeasure of single frequency band cannot meet the increasingly complicated demand of modern warfare, and the technology of stealth, detection and recognition must be based on the development of multispectral testing technology. Based on the threat analysis of ground weaponry, this paper analyzes the current situation of multispectral testing and data fusion processing technology with the most widely used radar and infrared target characteristics test ,and proposes some suggestions for development.

Abstract:Damage measurement, control and evaluation sensor is one of the key technologies to realize the intelligence of fuze and the expansion of fuze function. On the basis of introducing the requirement of Ammunition Fuze for new combat weapons, this paper analyses the application requirement of fuze for sensors, and expounds that the application of damage and evaluation sensor technology can greatly expand the fuze function and improve the fuze performance.

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