Design and Implementation of Intelligent Systems Based on Microcontrollers

Author: Shen Hongwei
Publisher:
Publish Date: 2005-01-01
Features: Microprocessors have been widely applied in various fields, especially in the application of intelligent instruments, where they have not only brought about changes in products themselves but also deeply influenced the transformation of design concepts. As an intelligent system, the core of intelligent instruments lies in microprocessors. Designing intelligent systems based on microprocessors has become a hot topic for many electronic design engineers or designers in related fields. Due to the fact that intelligent systems target different application domains, adopt different implementation approaches, utilize different development technologies, and involve different academic backgrounds, their design and debugging processes are often complex and challenging. Although there are no universal rules to follow in the design of intelligent systems, there are still some common issues worth exploring and certain common implementation concepts worth learning from each other, which is precisely the motivation behind the author writing this book. An intelligent system is a complex system, generally including basic functional components such as microprocessors, button and display human-machine interfaces, A/D converters, D/A converters, etc., and may also include other special components related to the application domain. Since specific systems have different requirements for each component, their implementation forms are diverse. Intelligent systems generally need to operate continuously under harsh conditions for long periods, so reliability also becomes a key issue that needs to be focused on. Through years of design practice, the author has accumulated many valuable experiences and identified many common issues in intelligent system design. Following the principles of "completeness, openness, practicality, and typicality," the author strives to fully reflect these experiences and insights in the book. The author believes that many of the design concepts, implementation methods, and specific solutions discussed in the book will have a significant impact on readers. The book consists of five chapters, each discussing the design of one intelligent system, which are entirely a summary and advancement of the author's recent development practices. The microprocessors used in the book are all from the currently most popular and widely applied 51 series and its compatible series, mainly the ATMEL89 series and Philips' 89LPC932 series. Each chapter is elaborated on in the following sequence: "Design Requirements → Solution Determination → Hardware Design → Software Design → System Debugging → Reliability or Issues Worth Further Discussion → System Prototype." Among them, the software design section discusses implementation methods based on ASM51 assembly language and C51 language. Chapter 1 discusses the design of an electronic alarm clock. Although the practical significance of the system discussed is not very high, the design ideas and implementation approaches it illustrates are of great reference value. The other four intelligent systems discussed in the book are all derived from industrial practice and have strong practical value. The book provides all hardware materials and complete program codes for the five intelligent systems. Following the principles of "completeness, openness, practicality, and typicality," the book mainly discusses the design of five intelligent systems, including a remote monitoring system, a digital regulator, and an automotive combination instrument pointer pressing controller, among which four are derived from industrial practice. All systems are based on 51-series microcontrollers, primarily involving the ATMEL89 series and Philips' 89LPC two mainstream series. The introduced examples, in terms of microcontroller structure, include both single-CPU systems and dual-CPU systems; in terms of communication buses, both RS-232 serial buses and CAN field buses are included; and in terms of development languages, all systems are implemented using both ASM51 and C51 languages, with complete source programs provided. The book covers both the design and application of typical functional components such as A/D and D/A converters, displays, as well as the author's practical experience and insights into common issues like reliability. The book is rich in content, with typical material selection, and has high practical value, making it suitable for science and technology personnel engaged in the development of intelligent instrument systems based on microcontrollers, as well as university teachers and students.