单片机毕业论文的摘要

近年来随着工业的发展，人们对过程控制的精密度和可靠性提出了更多更高的要求，因而液位控制也向着功能齐全，控制灵活，操作简单，控制精度准确的方向发展。液位调节器是生产中应用很广液位测量和控制的设备，所以测量的精确性和控制的准确性是本设备的关键。在研究国内现有传统的液位调节器的基础上，设计的了采用AT89C51单片机为核心，A/D转换器采用ADC0809、D/A转换器采用DAC0832、键盘显示芯片采用74LS165、74LS164。外部数据存储器采用PCF8583；硬件电路包括：温度检测电路、A/D转换电路、D/A转换电路、键盘显示电路、V/I转换电路、电源电路，由这些构成一个单片机液位调节系统。软件包括PID控制算法、液位控制。本系统把单片机应用于液位测量控制中，既提高了产品的功能和质量，又降低了成本。本系统还具有结构先进合理、功能完善、满足控制精度的要求、抗干扰能力强、较高的灵活性和可靠性、通用性好、价格低，使用方便等特点。Withindustrialdevelopmentinrecentyears,processcontrolforprecisionandreliabilityofmorehigherrequirements,andalsotowardtheliquidlevelcontrolfunctions,controlofaflexible,simpleoperation,. AvailableinthetraditionalliquidlevelregulatoronthebasisofthedesignusingAT89C51single-chipmicrocomputerasthecore,A/DconverterusingADC0809,D/AconvertersusedDAC0832,keyboarddisplaychip74LS165,;hardwarecircuitincluding:temperaturedetectioncircuit,A/Dconversioncircuit,D/Aconvertercircuit,akeyboarddisplaycircuit,V/Iconversioncircuit,powercircuit,. Thesystemappliestothesingle-chipcontrolofliquidlevelmeasurement,notonlytoenhancetheproduct'sfeaturesandquality,.

In recent years, with the rapid development of science and technology, the application of single chip is accepted broadly in real-time detection and automatic control of microcomputer. Although it’s often act as the core component of single chip system, it is not enough only with the knowledge of single chip. Engineers also need to think about the structure of the hardware to perfect the most higher education institutions have built single chip laboratory, equipped with experiment box and other hardware simulation equipment. But the circuitry of the experiment box is fixed and the experiment steps are hard to be changed. It is not fit the trend of rapid development speed of single chip technology. It is also unsuited to develop students’ abilities and creativities. With the introduction of the Proteus software simulation technology, it can be solved at a certain extent. We could design more experiment steps and help students completing their self-study with the simulation experimental platform. It is a positive technology for system construction. Based on the information above, the author design a temperature alarm system with functions of automatic temperature monitoring and artificially infrared temperature adjustment. This system is created based on the single-chip microcomputer simulation environment, using the PIC single chip of MICOCHIP ltd as the main control chip, combined with peripheral infrared sensor, LCD display, temperature sensing, dc motors, heating electric stove wire and alarm equipment. The control system of main chip and main program was written in C design has the advantages of reducing cost and increase practicability. It is could be adopted by most higher education institutions.

In recent years, with the rapid development of science and technology, the application of SCM is unceasingly thorough. In real-time detection and automatic control of microcomputer application system, its often as a core component to use. But only the microcontroller knowledge is not enough, should be based on the hardware structure, perfect soft combination. Most current universities have established the microcontroller laboratory, basically equipped with experiment box and other hardware simulation equipment. But experiment box hardware circuit fixed, experiment content more difficult change, is hard to adapt to the rapid development of single chip microcomputer and cultivate students' SCM development ability, innovation ability. Using the Proteus software simulation technology, can to a certain extent make up for the shortage, build a virtual experimental platform, can achieve more practice, provide students to learn to disciplinary construction of conditions, has a positive meaning. In view of this, this article based on the single-chip microcomputer simulation environment, Proteus MICOCHIP company by the PIC microcontroller as the main control chip series with data storage units, combined with peripheral infrared sensor, LCD display, temperature sensing, dc motors, heating DianLuSi, alarm equipment, written in C control program main control chip design combines a automatic temperature monitoring and artificially infrared temperature adjustment is an organic whole, have alarm function of temperature control system. This design fully exert Proteus characteristics, reduce the cost and enhance practicability, benefit in university promotion.