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1、第9章 单片机应用系统设计（The ninth chapter is about the design of MCU application system）In this paper, the contribution of butterfly pilesPpt documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view.The ninth chapter is
2、the design of SCM application systemThe focus of this chapter: this chapter focuses on the design of anti-jamming technology of singlechip application system process commonly used in MCU control system 9.1 reliability and anti-jamming 9.2 logic level conversion technology summary of this chapter 9.3
3、 system designHttp:/Nine point one9.1.1Reliability and anti-interferenceSources and types of interference1) according to the sources of interference, interference sources can be divided into internal interference and external interference. According to the sources of interference, interference sourc
4、es can be divided into internal interference and external interference. Internal interference is a variety of disturbances caused by various components in the computer control system, including fixed interference and transient interference. All kinds of interference, including fixed interference and
5、 transition interference. External interference and external interference are those that are independent of the system structure. External disturbances are interference with the structure of the system, determined by the conditions of use and the external environmental factors. It involves interfere
6、nce from natural disturbances and environmental disturbances. It includes natural disturbances and environmental disturbances, mainly from nature as well as surrounding electrical equipment. Electrical equipment from nature and around it.Http:/2) according to the characteristics of interference can
7、be divided into DC interference, AC interference and random interference. Three, according to the characteristics of interference can be divided into DC interference, and so on. DC interference DC interference is usually caused by thermoelectric effect and electrochemical effect, and the DC DC inter
8、ference is usually caused by thermoelectric effect and electrochemical effect, in the form of flow or DC voltage. In the form of flow or DC voltage. AC AC interference jamming is one of the most common interference, caused by alternating current induction, AC interference is a most common disturbanc
9、es, caused by AC induction, because the channel is often stray electric and magnetic field distribution of many places, often in the process of channel stray electric and magnetic field distribution of many places, when the parallel feeder signal wiring with the power line in the wire slot, and powe
10、r lines in parallel wiring wire slot, the coupling into the channel is particularly evident. As obvious. Random interference random interference is usually transient, peak or pulse form, random interference is generally transient, peak or pulse form, cause intermittent work by inductive loads, the i
11、nterference caused by large amplitude, short time, continuous work load, the interference of short time, amplitude large, it will cause great harm to the system. Cause great harm to.Http:/3) the interference can be divided into normal interference and common state interference according to the inter
12、ference. Normal interference normal interference is the interference superimposed on the signal being measured. Normal interference is the interference that is superimposed on the signal being measured. The measured signal is usually a DC or a slow change signal, the signal is usually DC or slow cha
13、nge signal, and the interference is fast, messy, irregular alternating signal. Alternating signal. The common mode interference common mode interference refers to the input circuit of common interference and common mode interference refers to the input circuit of common interference, the interferenc
14、e can be DC, can communicate, can be amplitude range, DC, can also be exchanges, the amplitude of varying size, depending on the environment and equipment grounding. Common mode interference is also called common mode interference. Grounding of the environment and equipment. Common mode interference
15、 is also called common mode interference.Http:/9.1.2 studies the importance of anti-jamming technology, the consequences of interference: the consequences of interference: data acquisition error increases, data interference changes, 9.1.3 microcontroller system reliability design 1.Reliability desig
16、n task internal factors: (1) internal factors: mainly refers to the impact of single-chip system work, including components themselves, system structure design and installation and debugging and other factors. The device itself, system structure design and installation and debugging, and other factors. Performance and reliability of components. Performance and reliability
