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Shows the Waveforms of RS232USBconverter
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Universal Serial Bus (USB) is a new personal computer interconnection protocol, developed to make the connection of peripheral devices to a computer easier and more efficient. It reduces the cost for the end user, improves communication speed and supports simultaneous attachment of multiple devices (up to127)RS232, in another hand, was designed to...
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Citations
... Hình 5 thể hiện module điều khiển có sử dụng vi điều khiển 8051 kết hợp với cổng truyền thông nối tiếp RS232. Các ứng dụng RS232 có thể sử dụng hai kiểu giao tiếp là bắt tay bằng các lệnh điều khiển trong luồng dữ liệu (điều khiển luồng phần mềm) hoặc các đường vật lý (điều khiển luồng phần cứng) (Vijaya et al., 2011). Bảng 2 thể hiện các trạng thái của bit điều khiển PA1 và PA0 dùng để điều khiển chiều quay của motor DC. ...
Controlling devices via the Internet has become familiar with everyone, the term IoT (Internet Of Things) has appeared in the last 10 years and became the current control trend. Connecting sensors, control devices and databases is required in smart home or agriculture models that requires high automation. This article raises the situation of controlling DC motors via the Internet includes changing the direction of rotation and adjusting the speed. Control model includes WebSever with Apache-open source software, ADS modem, Host and Domain name, processing control module by 8051 microcontroller, communication library with PHP language. Control algorithm for DC motor using pulse width modulation (or PWM)and H-bridge circuit. As a result, the control takes place immediately when using the local area network (LAN) and there is a certain delay in control via the Internet due to the transmission speed. Từ khóa: Control network, Internet control device, PWM, Speed DC Control. 2 Mã số định danh bài báo: http://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/388 Loại bài báo: Bài báo nghiên cứu gốc/Bài báo tổng quan có bình duyệt Bản quyền © 2018 (Các) Tác giả. Abstract Controlling devices via the Internet has become familiar with everyone, the term IoT (Internet Of Things) has appeared in the last 10 years and became the current control trend. Connecting sensors, control devices and databases is required in smart home or agriculture models that requires high automation. This article raises the situation of controlling DC motors via the Internet includes changing the direction of rotation and adjusting the speed. Control model includes WebSever with Apache-open source software, ADS modem, Host and Domain name, processing control module by 8051 microcontroller, communication library with PHP language. Control algorithm for DC motor using pulse width modulation (or PWM)and H-bridge circuit. As a result, the control takes place immediately when using the local area network (LAN) and there is a certain delay in control via the Internet due to the transmission speed.
... It's important to take into account how the USB standard is represented while utilizinga communication interfaces largely dependent on FPGAs [11]. When implementing a FPGA-based function generator, a Power cord is proposed to facilitate an external device to the internet.The USB network adapter UTMI as well as parallelism interfacing electric motor (PIE) represent critical factors [12]. The UTMI is a USB-connected serial data transmission and time frame alignment system. ...
The process of transmitting data in field-programmable gate array via USB connected with serial interface engine and FIFO is presented in this paper. The SIE component transmits inputs to also be communicated from some kind of PC’s centralized processor unit as well as passes so many through the standardized transmission conventional cellular interface, that takes care of many transmission-related concerns such as transmitting data but also rehabilitation.A 2Kb queue is prepared in assuring effective conversation between multiple FPGA processors.To convert input data of parallel form into output data of serial form, PISO converter is used. Device Information Notification is being used to make sure that the information is already in USB routing protocol. The data checking assertions are generally categorized as based on expected for cyclic consistency. The incoming signal is then transformed in to other electronic signals that use the SIPO component that once data has been analyzed.The FPGA-to-FPGA data transmission system is working properly.An implementation electronic device (example ASIC) is created utilizing Transistor.The number of gates are 14,547, consumption of power is 2.6742 mW and the frequency is 50MHz at a voltage and pin numbers of 1.8 V and 38 respectively.
... The device is installed in the whole campus with a classroom to quickly or conveniently utilize to log in or log out to the device. This distributed system application uses the RS-232 standard communication channel [21]. Based on the average of RS 232, 50 feet is the ideal distance; beyond that limitation, the user's risk of data loss will occur. ...
... The RS232 [21] controller is needed to amplify and isolate to avoid interferences because the data captured from the RF-ID is essential. Figure 4 shows the RS232 isolation and amplification circuit that uses optocouplers components. ...
This paper presented an implementation of distributed system application on periodic attendance records of the faculty monitoring of school colleges and universities' frequent class schedule checking. Hence, the researchers had developed a client RF-ID-based device installed near the classroom for easy access by the faculty. Also, the HR department installed the server with a middleware running and database to store data. Each faculty subject/load will be entered and stored into the server's database at the beginning of each semester as the basis to compute the salary for every payoff. The methodology used is deductive because it is development and design. Finally, the researchers designed a distributed system application utilizing the microcontroller of every client. They created a middleware application software to cater the transmitted data from all installed RF-ID readers or clients to the server and vice versa. The researchers concluded that the study had shown that the distributed system application is a beneficial solution to most schools, colleges, and university faculty attendance monitoring.
... An embedded converter that converts RS232 to USB is convenient for achieving the advantages of USB without making major changes to a system that relies on RS232. A first-in first-out (FIFO) logic interface was developed to bridge the data rate differences between the USB and RS232 protocols [7], [8]. That FIFO logic interface is also a useful guide for implementing other USB devices. ...
This paper presents a universal serial bus (USB) transceiver with a serial interface engine (SIE) and an asynchronous first-in first-out (FIFO) queue for packet transformation and data transmission in field-programmable gate array (FPGA)-to-FPGA communication. The SIE block receives the data to be transmitted from the central processing unit of a PC and transfers those data to the universal transceiver macrocell interface, which handles data serialization and deserialization, bit stuffing, clock recovery, and clock synchronization. An asynchronous FIFO queue of 2 kilobits is designed to guarantee correct communication between two FPGA development boards. A parallel-in serial-out block converts parallel input data into serial data. A product identification (PID) check block determines whether the serial data are in the USB packet format. The cyclic redundancy check (CRC) checksums, namely CRC5 and CRC16, are presented with data check statements. After passing through the NRZI decoder, bit-unstuffing, PID check, and CRC16 blocks, the received serial data are converted into parallel output data by using a serial-in parallel-out block. The FPGA-to-FPGA communication design operates correctly. An application-specific integrated circuit (ASIC) of the USB transceiver is implemented using TSMC 0.18-μm CMOS technology. The gate counts, power consumption, operating frequency, and chip area of the ASIC are 14,547, 2.6742 mW, 50 MHz, and 0.7 × 0.67 mm2, respectively, at a supply voltage of 1.8 V and total pin number of 38.
... As mentioned above, the data transmission protocol used in the proposed design was developed and optimized in accordance with the RS-232 protocol (Vijaya et al., 2011). A data frame consists of a start bit, eight data bits, and a stop bit. ...
A dynamic data transmission technology for expendable current
profilers (XCPs) is proposed in this paper. Two parallel varnished wires are
employed as the data transmission medium. By testing the transmission
properties of the varnished wires, a baseband transmission system is studied
and designed. Modified low-voltage differential signaling (LVDS) is adopted as the physical layer for data transmission. The data transmission protocol is
modified and optimized in accordance with the RS-232 protocol, and the
Manchester code is superimposed. According to the results of indoor and
marine tests, the data transmission distance of the designed system, which
employs a 0.1 mm diameter varnished wire, extends to 2 km with high
efficiency and accuracy for data transmission, exhibiting excellent
performance. Moreover, this data transmission technology could be used for
other expendable marine-environment parametric measuring instruments such as
an expendable bathythermograph and an expendable conductivity temperature
depth profiler.
... As mentioned above, the data transmission protocol used in the proposed design was developed and optimized in accordance with the RS-232 protocol (Vijaya et al., 2011). A data frame consists of a start bit, eight data bits, and a stop bit. ...
A dynamic data transmission technology for expendable current profilers is proposed in this paper. Two parallel varnished wires are employed as the data transmission medium. By testing the transmission properties of the varnished wires, a baseband transmission system is studied and designed. Modified low-voltage differential signaling is adopted as the physical layer for data transmission. The data transmission protocol is modified and optimized in accordance with the RS 232 protocol, and the Manchester code is superimposed. According to the results of indoor and marine tests, the data transmission distance of the designed system, which employs a 0.1 mm diameter varnished wire, extends to 2 km with high efficiency and accuracy for data transmission, exhibiting excellent performance. Moreover, this data transmission technology could be used for other expendable marine-environment parametric measuring instruments such as an expendable bathythermograph and an expendable conductivity temperature depth profiler.
The article discusses the vision framework for computing that includes image recognition, classification, prioritization, and navigation control modules. In this framework, a user model is used to feed the robotic controllers, whose performance improves in dynamic virtual contexts. In contrast, the vision module uses a multi-level perceptual neural network capable of efficient image segmentation, object recognition, and color segmentation, using the control module Position-Based Vision Serving (PBVS) and actions such as Avoid Collision (), Go-Ahead (), and Follow( ). It controls the motion of the robot, so the system successfully tested and met the requirements of the Antimedia Robotics Pioneer I robot. In addition, it was consistent with real life. The results show the effectiveness of the system in providing effective guidance and avoiding obstacles. Furthermore, the study investigates the use of artificial neural networks for image recognition and classification. In addition, it requires the use of SpCoMapping to add language maps to useful information. In summary, studies have emphasized the potential of computer vision and neural networks to improve robotic communication and language learning.
This paper presents a comprehensive study on the design and development of the Daily Time Record system for employees of the Local Government of Sison in Surigao Del Norte. The system serves as a basis for recording their time-in and time-out, which, in turn, plays a crucial role in evaluating their performance and calculating their salaries. To facilitate this process, an RF-ID reader is integrated into the computer keyboard port to capture RF-ID tags during login and logout transactions. In addition to the Time Record system, the study also focuses on the development of an automated Central Alarm system. The external central alarm is connected via a USB port with the aid of a third-party driver that converts from USB to RS232 cable converter, enabling seamless communication with the embedded systems application of the alarm system. Careful consideration was given to the power rating of the alarm siren and the driver of the high current load to ensure efficient operation. To realize the complete automation process, the implementation includes the utilization of a MYSQL database for the backend, while the front end is based on Visual Basic.net. The study's results indicate that the system's output is not only applicable to the Local Government of Sison but also serves as a suitable solution for other local government units seeking to implement an automated centralized alarm system. The system has been extensively tested and found to be compatible with most windows operating systems, making it highly adaptable and accessible across various environments
The dynamic data transmission technology of an expendable current profiler is proposed in this paper. Two parallel varnished wires are employed as the data transmission medium. By testing the transmission properties of the varnished wires, a baseband transmission system is studied and designed. An optocoupler is used as the physical layer for data transmission. The data transmission protocol is modified and optimized in accordance with the RS232 protocol, and the Manchester code is superimposed. According to the results of indoor and marine tests, the data transmission distance of the designed system, which employed a 0.1-mm-diameter varnished wire, extends to 2 km with high accuracy for data transmission, exhibiting excellent performance. Moreover, this data transmission technology could be used for other expendable marine-environment parametric measuring instruments such as an expendable bathythermograph and expendable conductivity temperature depth profiler.
