The infrared radiation characteristics of oil storage tanks are an important basis for the detection and identification of oil tanks. The study of the infrared radiation characteristics of oil tanks is of great significance to the realization of infrared protection and stealth of oil tanks. This paper takes oil tanks as the research object, establishes a theoretical calculation model of the tank surface temperature field and a one-dimensional heat balance equation, and obtains the temperature distribution of the tank surface at various times. On this basis, the infrared radiation characteristics of the oil tank are further calculated, discussed and analyzed.
Linear array CCD device has the characteristics of large pixel size, high precision, good resolution, wide spectral response, small volume and so on. It is widely used in image sensing, spectral analysis and non-contact measurement fields such as size, displacement and vibration measurement.In this paper, the general structure and timing control characteristics of linear CCD are analyzed, and the typical CCD chip Toshiba TCD1304 is studied. The CCD is a linear image sensor with high sensitivity and low dark current. The pixel size is 8um × 200um, 3648 pixels in total, and the wavelength response range is 300nm ~ 1100nm.Secondly, the 32-bit flash microcontroller STM32F103 based on the core of arm cortex m3 processor is used as the main control chip, and a set of CCD data acquisition system with flexible integration time adjustment function is designed by combining with the 12 bit high speed A/D converter, 2.8-inch TFT LCD and upper computer software.Finally, the whole system is tested, The test results of the system verify the feasibility of the driving timing design of linear array CCD. The driving timing signal is connected to the CCD device. Under the condition of different light incidence, the CCD works normally and outputs the corresponding video signal driven by the driving signal. The technical indexes of the system can meet the requirements of the system design, and provide a technical reference for similar CCD data acquisition system and lay the foundation for further image recognition and processing.
Short arc xenon lamp is a point light source with high brightness, good light color and short start-up time. Short arc xenon lamp is widely used in industrial production, national defense and scientific research. It can be used as standard white light source, continuous ultraviolet radiation source, solar simulation light source, etc. it can also be used in infrared heating imaging furnace to melt refractory metals and materials. The trigger voltage and working voltage of different power short arc xenon lamp are different, so different trigger and working power supply need to be configured. On the basis of meeting the requirements of triggering 10kW short arc xenon lamp, this design optimizes the design idea, can automatically detect the relevant parameters of xenon lamp and power supply, and judge the triggering and working state of short arc xenon lamp according to the test data. If the trigger is not successful, it will be automatically triggered again. After the short arc xenon lamp is lit, it can detect and display working parameters such as electric power. The multi-functional xenon lamp flip-flop has been verified by software simulation, and it completely meets the design requirements. The trigger voltage of the trigger can be adjusted according to the need, and the trigger requirements of different power short arc xenon lamp can be met by replacing the peripheral mutual inductance coil.
Incoherent strong light beams have been widely used in military, anti-terrorism and anti-drug fields. The transmission of the light beam in the atmosphere is affected by the absorption of the atmosphere, the scattering and refraction of particles in the atmosphere, so that the energy of the strong light beam is continuously attenuated during the transmission process. In order to study the atmospheric transmission characteristics of incoherent strong light beams under different conditions, a theoretical model for the transmission of incoherent strong light in the atmosphere was established, and the Modtran model was used to simulate and calculate the visible light atmospheric transmittance under different visibility conditions. On this basis, the illuminance of the incoherent strong beam after the attenuation of different atmospheric distances is further calculated. The results show that as the visibility decreases, the atmospheric transmittance decreases rapidly, and the illumination of the incoherent strong beam is greatly attenuated. The research results can provide some theoretical support for the in-depth application of incoherent strong beams in military and anti-terrorism fields.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.