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LCD display based on FPGA
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LCD display based on FPGA's full source code. The design is divided into three modules: signal source module, frequency meter module and display module. Through a software program to download and run on the LCD display frequency and other information
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Design of electronic clock based on ARM
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&The design of the code electronic clock is mainly to transmit the time in RTC module to LCD for real-time display; in addition, it communicates with PC through serial port to set the current time and alarm time in RTC module. S3c2410a real-time clock unit is an internal and external device integrated with the processor. It is powered by the backup battery on the development board and can run when the system power is off. RTC sends 8-bit BCD code data to the CPU. The data transmitted includes
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Frequency meter based on FPGA
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A standard reference clock is used to count the number of pulses of the measured signal in a unit time such as 1s, which is the frequency of the signal. Since the start and end time of the gate are random for the signal, there will be quantization error of the pulse period, and the measurement accuracy will be further analyzed. Therefore, the direct frequency measurement method is only suitable for measuring signals with higher frequency, and can not meet the requirement of keeping the measurement accuracy unchanged in the whole measurement frequency band. In order to get high accuracy in the whole frequency band, other methods such as equal precision measurement should be considered.
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Images defogging
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Covered in fog and other weather conditions, atmospheric particles scattering imaging sensor image seriously degraded "images defogging techniques task
Is the removal of weather impact on image quality, so as to enhance the visibility of the image of "this article sums up the images defogging techniques at home and abroad
"Existing methods are divided into two categories based on physical and non-physical model, respectively, these two methods are described in detail, and analyzes their respective advantages and does not
Foot, and summarized the algorithm performance evaluation of no-reference objective quality evaluation criteria "in the end, pointed out that the technical difficulties and development trends"
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Digital demultiplexer
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The digital demultiplexer designed in this paper is composed of frame synchronization extraction module, bit synchronization extraction module, frame synchronization shift and timing signal recovery module, demultiplexer module and serial / parallel conversion circuit module.
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