在"新工科"建设视角下,聚焦地方高校电子信息类专业的嵌入式系统教学,从优化教学体系、重构课程教学、完善评价机制三方面入手,进行课程改革.试点探索表明,改革适应学情、生情、地方及行业需求,对学生参加学科竞赛、学生科研乃至考研面试、就业都有积极作用,为地方高校电子信息类专业相关课程的教学改革提供了有价值的参考路径.

In order to ensure the high voltage electrical equipment working efficiently and safely, a wireless temperature monitoring system with low power consumption was designed based on C8051F930 and Si4438. The system includes the host and the slave,both of which are composed of main control module, wireless communication module, power module and so on. The slave is installed in electric equipment, and it sends temperature data to the host through wireless communication. When the temperature exceeds the preset value, the system sends warning information. The system has the advantages of low power consumption, high precision, long distance and low cost, which enables users to remote temperature monitoring of high-voltage electrical equipment in time.

Purpose – Monitoring the real-time temperature, humidity, and physical position status of goods is vital in the cold chain. Diverse logistics technologies and systems have been adopted in the cold chain for monitoring perishable goods. However, these technologies and systems are independent from each other. Data and information in them are not integrated so that information control is not effective. The paper aims to discuss these issues. Design/methodology/approach – By integrating Internet of Things and tracking technologies, this paper proposes an intelligent tracking system, which is designed to achieve effective and fast live monitoring of goods in the cold chain at the lowest cost and with the largest network capacity and simplest protocols. Findings – Structure and information platform design mechanism are introduced. The key part of this system is a wireless sensor network built on Zigbee. Wireless sensors located in cold storages or refrigerated trucks are able to collect and transmit live data quickly and efficiently. Originality/value – Users of the proposed system can easily monitor goods transported in cold chains. In addition, the system assigns specific servers to save historical data for inquiries.

The exhaust valve failure may cause drainage pipe leakage,but most of exhaust valve are lack of leakage protection and real-time alarm function.A new intelligent exhaust valve system which has functions of monitor,alarm and close drainage pipes is designed.When the exhaust valve is leak,the system sends failure SMS to the server or maintainer,and exhaust valve is closed to prevent environmental pollution simultaneously.The intelligent exhaust value is put into practice, and it solves leakage and alarm problems effectively.

To avoid and weaken as much as possible the impact which unevenness effect acts on the underwater in-situ X-ray fluorescence spectrometry, an underwater in-situ X-ray fluorescence spectrometry assistance measurement equipment is developed.The equipment is composed of underwater video camera system and angle measurement system, and it is installed on a portable X-ray fluorescence spectrometry probe and is used to un-derwater in-situ X-ray fluorescence spectrometry.Thus the underwater measurement can effectively select the measuring surface and avoid and weaken the unevenness effect campared with the measurement on the ground. The equipment is installed combined type, and it can be used underwater with a maximum depth of 30 meters, and its angle measurement system can also be used in other places to be measured angle.Experimental results show that:the development of the measuring device solves unevenness effect underwater in-situ X-ray fluo-rescence spectrometry.

The memory space and bandwidth may be limited in speech signal communication. To solve the problem,a low rate speech coding and decoding system has been developed to realize speech communication with a high condensation. This system is composed of micro-controller STM32,special speech processor TR600,speech codec chip TLV320AIC10,speech acquisition and playback circuit. This design can code and decode speech in 0. 6 Kbps,0. 8Kbps,1. 2 Kbps and 2. 4 Kbps. The tests show that the system's reconstructive speech could maintain high naturalness,articulation and intelligibility,hence it reflects the design is feasible,stable and valuable.

影响霍尔效应的因素较多,形状参数是其中之一,但目前对此的研究往往多是以实验方式来描述其影响情况,而没有进行具体的理论分析和研究.以较为典型的长方形霍尔元件为例,通过理论分析和运算明晰了该参数对霍尔效应影响的机理.分析得出霍尔元件表面的长宽比越大,霍尔效应越明显,同时综合考虑其他的一些因素,如:输入输出电阻、功耗及电路的短路效应等等,分析得到一个相应的实际常用的一个长宽比.

In this paper, we proposed a smart cold-chain logistics tracking and monitoring system based on the wireless temperature and humidity sensor network and the GPS, and then introduced the composition, structure and working mechanism of the system.

In this paper, on the basis of an analysis of the major influence factors of transport energy consumption, we used the complete decomposition model to analyze the key influence factors of the energy consumption of the passenger and cargo transportation in Zhejiang, reached some useful conclusions, and at the end proposed the corresponding suggestions and countermeasures.

基于现代工程教育理念以及应用型人才培养模式的改革,提出了分层的基于项目的课程体系构建以及高校与行业企业有效合作方式,探索解决高等工科教育中理论与实践相结合问题的途径.

The teaching reform of single chip microcomputer according to the ideology oftraining application-oriented talents is introduced in this paper,including course importance improvement,knowledge module optimization,course system reconstruction,teaching methods perfection and some other activities.General problems such as microcomputer selection,exam method,experiment equipment are discussed.Practical teaching proves that excellent teaching results are achieved.

In view of the status que of the basic knowledge and ability of engineering students in local universities and the diversified social needs for talents,the mode of cultivating application-oriented engineering talents was studied and the plan for the reform of the curriculum and practical training was discussed.Taken into consideration,the reality of local universities,the idea for enforcing the cultivation of practical competence of students and the guarantee for the establishment of the cultivation mode for application-oriented engineering talents was proposed,in an attempt to provide reference for other universities of the same kind.

In view of embedded system teaching on electronic and information engineering, this paper discussed tal- ent demand of embedded system, knowledge system and choosing of embedded processor and core. Through the discussing above, teaching contents integrating, experimental platform and practice teaching design were explained detail, and put forward an embedded system experience teaching system based on ARM Cortex-M3 core.

为完善电能质量监测体系,设计了一款基于ATT7027的多功能数字式电能质量监测装置,实现了对基本电能质量参数的测量及显示。具体介绍系统的硬件设计和软件设计两方面。硬件电路主要由信号采样电路、ATT7027主控电路、LCD显示电路、及电源电路四部分构成,给出了软件程序流程图。样机经实际检测效果良好。

From the point of view of application, according to the batching controller’s signal processing circuit, this paper deduces the weighting-signal’s transfer function. Kaiser window is chosen to design FIR filter to determine the filter’s parameter, assisted by MATLAB. According to the target of batching controller’s signal processing, this paper lists the C51 source programs of FIR filter, accounts the program’s running time, and uses Simulink soft package to emulate the whole signal flow, with perfect result. Practical application indicates that the measurement accuracy is greatly increased by combining processing circuit with FIR algorithm to process weighting signal.

To enhance the quality for vehicle tracking,a robust H∞ filter algorithm under road situation is proposed in this paper.It notices that the running vehicles are constrained by the road network.Using the road network as filtering constraint condition,a dynamical system model with road constraint is built and the corresponding robust H∞ filtering equation is derived.The simulation results show that,the proposed algorithm has more tracking accuracy and better filtering performance than unconstrained H∞ filter and Kalman filter algorithm.

以应用性人才培养为目标，在现有普遍的教学方式基础上，首先转移教学地点、扩展教学时间，探索理论实践、课内课外一体化模式；其次改革教学方式，引入基础知识演示、重点知识点项目化、学习小组化、技术研发中心及教学资源电子化、网络化等方式，探索教学内容、教学方式多元化模式。最终融合形成多元化、一体式教学组织形式。实践表明，这一模式，有助提高学生的主观能动性，加强学生的实际动手能力和创新研究能力。

霍尔效应是目前一个广为应用的物理现象。影响霍尔效应的因素较多，形状参数就是其中之一。文中通过理论分析和运算明晰了该参数对霍尔效应影响的机理，分析得出霍尔元件表面的长宽比越大，霍尔效应越明显，通过分析得到一个相应的长宽比。