The Software Design Of The Large Capacity Data Storage Of Digital Phosphor Oscilloscope

With the rapid development of electronic industry, all kinds of electronic devices have become more and more complex, in which the probability of internal abnormal signals greatly increased. Therefore traditional digital oscilloscope has been unable to meet the time-domain test requirements for these signals. However deep storage function can provide large-scale storage capacity for oscilloscope, making digital oscilloscope continuously able to acquire a longer time with high sampling rate for observation and analysis, which makes itself has great technical and economic value, and gradually becomes the focus of research in the oscilloscope industry.The technology related to the implementation of deep storage has been analyzed relying on the development of digital phosphor oscilloscope of the department, and two basic functions of acquisition and storage and waveform recording of deep storage have been realized. The prime research contents are as follows:First, according to the hardware composition and working principle of the digital phosphor oscilloscope deep storage system, the main works and the implementation difficulty of various functions have been studied. Accordingly put forward the overall design of the software is put forward. Meanwhile the modular and hierarchical design of software system has been Implemented, which makes the software has good encapsulation and maintainability.Second, through carrying on the analysis directing at the basic principle of data writing and reading, the basic control process of software acquisition and calculation method aiming at controlling parameters are designed, and the multi-variable storage depth acquisition is achieved. In the meantime, the Ping-Pong acquisition technology has solved the issue that exists in response to a user’s operation related to oscilloscope in deep memory. On the basis, pumping-points allocation algorithm and trigger-correcting algorithm have improved, which lead to fine rationality of calculating pumping points and high accuracy of correcting the trigger.Third, through utilizing large-scale storage capacity segmentation technology, the waveform recording function has been completed and on the basis of analyzing the difficulty of control conditions of, related software solutions is put forward.In view of the above research, how the software improves the performance of deep memory function under the assistance of the general hardware is discussed in this thesis, which has settled with the long time to process data in the deep storage and developed the accuracy of capturing the abnormal signal. The large-capacity data-storage scheme that has high cost-effective has realized ultimately.