Then some new techniques such as image compressing using wavelet analysis , digital image transfer in the lan and application of high - speed dsp are discussed . at last , the hardware structure and software algorithm of the image monitor system based on dsp are introduced 然后根据当前图像监控系统设计中应用到的新技术,分别从小波分析在图像压缩中的应用、数字图像在局域网上的传输和高速dsp器件在图像监控系统中的应用等三个方面作了介绍。
The general design , software algorithm and the whole process are discussed in detail based on the introduction of hardware and software . . furthermore , several instance tests are carried through to diminish the error based on analyzing and comparing different algorithm 本论文在介绍整个装置的硬件及软件构成的基础上,详细讨论了整个系统的总体设计、软件算法和具体的实现方法,并为减小测量误差进行了相应算法的分析与比较,在此基础上进行了仿真测试。
Abstract : in this paper , the significance of remote monitoring and fault diagnosis system for the pipe laying pump units in petroleum conveyance process is discussed . the communication principle and particular of remote monitoring and fault diagnosis system for pump units are analyzed . the hardware configuring and software algorithm of this system are constructed , and then , advantage and benefit out of this system are pointed out 文摘:论述了原油输运过程中的加压泵机组远程监测及故障诊断系统的意义,分析了输油泵机组远程监测及诊断系统的通信原理和特点,建立了实现该系统的硬件结构和软件体系,最后说明了采用该系统的优势。
In this paper , the significance of remote monitoring and fault diagnosis system for the pipe laying pump units in petroleum conveyance process is discussed . the communication principle and particular of remote monitoring and fault diagnosis system for pump units are analyzed . the hardware configuring and software algorithm of this system are constructed , and then , advantage and benefit out of this system are pointed out 论述了原油输运过程中的加压泵机组远程监测及故障诊断系统的意义,分析了输油泵机组远程监测及诊断系统的通信原理和特点,建立了实现该系统的硬件结构和软件体系,最后说明了采用该系统的优势。
In the system , control unit accomplishes back - emf zero - crossing information reading and closed loop commutation . the system eliminates the pwm interferences and the commutating interferences by filtering with software algorithm . in order to make the bldc commutate exactly , the method of three - point estimation is used for phase locking in the system . the system also accomplishes several important objects , such as tmppt of photovoltaic arrays , unmanned supervision of the system , fault detection etc . the results of the experiment show that the device , which is made on the base of the principle above , can control the motor to complete the exact commutation 系统以motorola单片机jl3为核心,完成了系统外围硬件电路和控制软件设计,实现了直流无刷电机反电势过零检测,利用软件滤波的方式消除了pwm波干扰及换相干扰;采用三点预估算法,进行相位锁定,以完成直流无刷电机准确换相;同时实现了光伏阵列工作点的tmppt跟踪、系统无人监控和故障检测等功能。
The most recognized form of digital wrappers are digital envelopes . those pieces of code are the workhorses of e - mail encryption , locking out intruders who don ' t have the right digital key to open the envelope . the digital envelope is essentially made up of code encrypted with a cipher , or software algorithm , and carries a digital signature that properly identifies the sender to the recipient 数字包装器最被认可的形式是数字信封,这些代码主要完成电子邮件的加密,把想打开信封而没有正确数字密钥的入侵者挡在外面,数字信封主要由通过密码加密或软件算法加密的代码组成,运载着能正确让接收方识别发送方身份的数字签名。
This article provides a brief description of rsa public key cryptography , an analysis and compare of all kinds of present existed modular exponentiation in rsa public key cryptography , a colligation of the fastest accelerating software algorithm - vlnw sliding window methods and hardware mapping fast montgomery modular multiplication algorithm that can improve the implementary efficiency of rsa public key cryptography for achieving the novel algorithm - mnexp algorithm 本文简单介绍了rsa公钥密码体制,分析比较rsa公钥密码中已有的模幂运算方法,将得到的最快软件加速算法vlnw滑动窗口法和硬件映射最快的montgomery模乘算法综合,得到改进后的mnexp算法能有效提高rsa公钥密码的实现效率。椭圆曲线密码系统被认为可以替代rsa算法的一种公钥密码体制。