System design of double sheet detection with ultrasonic sensor
A double sheet detection system with ultrasonic sensors is designed for providing scanning equipments with rapid and accurate double sheet detections and it's suitable to different kinds of paper. It is composed of the circuit to transmitting ultrasonic wave, the circuit to process ultrasonic wave received and the determination circuit. The system can give an alarm signal to the scanning equipments when there is double sheet to avoid paper jam or leaky scanning. Thanks to the high speed and high accuracy, the scanning trouble and resource wastes can be reduced, thus improving greatly the automatic extend for the scanning equipments.
The Design on Practical Peak Value Detector with Interrupt Output
This paper introduces how to design electrical circuit of peak value detector. It also discusses its parameters and performance.
SR topography of plastically deformed Fe-Si bicrystals - observation in situ and post mortem
SR reflection topography was applied to study the interaction of slip dislocations with the grain boundaries in Fe-4at%Si bicrystals deformed by compression. Three experimental settings with either a white or monochromatic beam were used and the corresponding orientation contrast analysed. Dislocation transmission through the grain boundary was observed in bicrystals with favourable geometry of the slip systems.