The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The machinery currently used in greenhouse cultivation are mainly hand-held tiny cultivators which need combustion of diesel or petrol to power. There are many problems: inconvenient operation and security risks, operating personnel labor intensity, serious pollution. The tiny remotely controlled electric crawler cultivator for greenhouses wes designed based on the above problems. The main structure...
In this paper, the force analysis of the blade roller of the tiny cultivator is described firstly. The static analysis of the blade is carried out by using the Simulation plug of SolidWorks, and the data of von mises stress, resultant displacement, equivalent strain and safety factor of the blade are obtained. Then the modal analysis of the blade roller is carried out, and the data of the top ten...
To solve the problems of serious pollutions, going along with the machine, inconvenient operations and high operating costs etc., a tiny remotely controlled electric cultivator was designed. The main structure and working principle of the cultivator are first introduced briefly and then the design of powertrain system is introduced. Then the SolidWorks Simulation plug-in is used to static analyze...
To realize the effective recognition of pebrine image, on the basis of the sample preparation and shape feature analysis of pebrine image, this paper focuses on the research of multifeature parameters extraction technology of pebrine image. In particular, in order to realize the direct separation of colorized pebrine image from complex background, the method of color feature extraction criterion for...
Nowadays, with the ever increasing complexity of multi-domain mechatronics products and the demand of reducing time-to-market, the system design approach which meets the requirements of virtualized, concurrent, and systemized is needed. Based on the practical problems arise in the controller design for mechatronics system, this paper proposes a novel controller design approach based on functional...
A new image enhancement method applied to polarimetric SAR image is proposed in this paper. Instead of widely-used intensity image, this method processes real part and imaginary part of complex SAR image. Independent Component Analysis (ICA) algorithm is used to extract enhanced real and imaginary images, for multiplicative speckle noise in intensity SAR image is additive in complex domain according...
The IEEE 1588 standard could synchronizes independent clocks running on separate nodes of a distributed measurement and control system to a high degree of accuracy and precision. But the standard did not present the method to implement the protocol in detail. An implementation of the IEEE 1588 based on an FPGA is presented in this paper. And the result of the experiment shows this method could achieve...
TDMA scheme is widely used for resolving non-deterministic problem in Ethernet. The message delay of the network is very important for real-time control system. In this paper, message delay in TDMA system is studied. A delay model is built. The probability distribution function and the expectation of message resident time are derived, and the numerical simulation results are presented. These results...
In view of the machine parts examination and the recognition situation to the needs of components image outside feature extraction, this paper introduces the Harris operator's basic theory and the realization process of algorithm, analyzes two factors which influence the corner extraction such as noise sensitivity and threshold value, proposes the technique of extraction straight line and circular...
According to the demand of actual application for motors, the software and hardware structure of remote wireless monitoring and control system for the motor based on LabVIEW and GPRS were designed. The paper presented the design principles of the motor's speed measurement system based on the singlechip, studied the communication protocol of the serial interface between singelchip and GPRS module....
The paper gives a comprehensive description about how to construct a Web server for remote measuring and control needs, proposes a solution under Linux software and HMS30C7202 embedded hardware platform. Combined with Web browser and application interface based on Java Applet technology, dynamic flush on control Web page was executed. Particular application layer data protocol was designed; dynamic...
To get better effect in the edge detection, an improved edge detection algorithm based on image fuzzy enhancement is presented through analyzing the defects of Pal algorithm. The algorithm not only simplifies the complex transformation calculation of fuzzy space by using the enhancement algorithm based on grayscale fuzzy sets, but also adopts the improved method of maximum variance between clusters...
Hardware design of image recognition system based on ARM and FPGA is introduced. System is compartmentalize into three modules, image collection and low-level processing module, which include the CMOS image sensor control, video data collection; video data preservation and VGA display module; System management and external interface modules, which include USB, Ethernet, PS2, and RS-232 etc. The FPGA...
This paper analyses the performance of solution structure on non-derivative optimization algorithm based on characteristic of probability density function with Gaussian distribution. Using hybrid algorithm of non-derivative with two kinds of different solutions expression, the digital simulation experiments are made for benchmark functions. The results show that the structure form of solution of non-derivative...
In this paper the inverter accessing internet based on embedded system has been proposed, by which the inverter could be directly controlled on internet. Based on ARM and Linux soft-hardware embedded platform, integrating thttpd embedded web server, Java Applet dynamitic web page technology has been adopted to achieve the client visiting. According to LG company IS5 inverter, communication protocol...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.