Slave Computer Research Articles

Research on Precision Experimental Table for CO<sub>2</sub> Laser Machining Microfluidic Chip

In order to experiment study of CO2 laser machining polymer-based microfluidic chip, a laser micro-processing precision experimental table was built. A servo feed system directly driven by linear motor was designed to achieve high speed and high position accuracy. Dual-CPU open CNC system used Industrial Personal Computer(IPC) as master computer and PMAC controller as slave computer was constructed to ensure system real-time control. In order to increase position accuracy of precision table, a forecast model of the linear motor position error was put forward based on LSSVM and error compensation was processed. Research results indicated that the use of radial basis function of the LSSVM could improve linear motor position accuracy.

Design and Implementation of RFID Card T5557 Reader Software

For the convenience of reading and writing ATMEL company TEMIC series radio frequency card T5557, developed T5557 RF card reader software based on reader hardware, STC12C5410AD as the main chip. Developed on the platform of VC++, MSComm control for master and slave computers communication, regular block reading and writing, protection block reading and writing, operating mode settings, password settings, and change the password operation for the T5557 RF card is achieved.

Design and Implementation of the T5557 RF Card Reader

For the convenience of reading and writing ATMEL company TEMIC series radio frequency card T5557, STC11F32XE as the main chip, developed T5557 RF card reader. Based on reader hardware master computer software also developed. Master computer software developed on the platform of VC++, MSComm control for master and slave computers communication. This paper introduces the card reader circuit, relative to the use of radio frequency card reading and writing base station chip, greatly reduced the cost.

Research on the Remote Monitoring System of Photovoltaic Power Station Based on CAN Bus and GPRS with Mechanical Properties

According to the requirements of the PV station remote monitoring system, such as big information flow, far distance transmission, high-performance, this article has designed a remote PV station monitoring system based on CAN bus and GPRS with mechanical properties. After lucubrated CAN bus and GPRS communication technology, this article details the hardware circuit of the slave computer, the communication protocol of CAN bus and the design of communication network. It has solved the problems that bad real-time, low degree of automation, few nodes can be accommodated, weak anti-interference ability which exits in the past design of PV station remote monitoring system.

Design and Implementation of Cholecystolithiasis Automatically Perfusion-Dissolved Instrument

In view of the difficulty to operate, low efficiency, and easy to leak of the manual perfusion method for dissolving cholecystolithiasis, an automatically perfusion-dissolved instrument is designed. By means of collecting and analysing the pressure data being outputted from pressure sensor in real time, and adjusting speed and direction of peristaltic pumps automatically to control quantity of dissolvent, so as to achieve the goal of litholysis under constant pressure in the gallbladder. The instrument has function of automatic heating and controlling temperature. Double controllers are used in the design, slave computer controls the running of each module of the instrument, and master computer is used to real-time display operation state and set parameters. Experimental results indicate that the system is stable and reliable, and with high efficiency for dissolving cholecystolithiasis, which provides a new and effective method for cholelithiasis medical treatment.

Transfusion Monitoring and Controlling System Based on Wireless Communication

Transfusion monitoring and controlling system of wireless communication is designed for avoidance of medical accident due to inconsiderate care. This system is based on RS-485 bus protocol to build the communication network, consisting of master computer and slave computer. STM32F103R8T6 MCU is the core of the master computer, and MSP430F2132 MCU for slave computer. The wireless transmission of data between master computer and slave computer can be done by nRF905 wireless transceiver module. One new calculation of drop speed is used for better real-time displaying thereof. Provided that abnormal occurrence is during the transfusion, the transfusion tube will be closed by controlling order from system, in order to protect the patient.

Multi-Parameter Test System Based on the Microcontroller and Labview

It put forward the design scheme of the multi-parameter data acquisition based on the existing sensors and related test equipment in laboratory. The system selected the acceleration and speed signals as the measured parameters. The PC computer was taken as the host computer and the PCI-6014 data acquisition card was used to achieve the data collection, analysis, storage and display of various parameters. At the same time the host computer sent the control signal to SCM. The SCM of AT89S52 was used as the slave computer to receive the control signal from the host computer and give an alarm signal. To achieve the real-time control for the data acquisition, the communication between the host and slave computer was achieved via the RS232 serial communication technology.

Research on Reciprocating Machinery Fault Diagnosis and Testing Method

Based on characteristics and operating principle of reciprocating machinery, we presented fault diagnosis and data testing method of reciprocating machinery, which features the testing based on crank phase signal, cylinder pressure, temperature, vibration and ultrasonic signal, developed a embedded data acquisition system, and described system composition and module functions. We also realized a CAN bus-based data transmission and communication mode, introduced the slave computer software working flow of the testing system, and developed the data processing and fault analysis software with LABVIEW. The practical tests show that crank phase signal-based data testing can meet requirements on fault diagnosis and data acquisition of reciprocating machinery.

Application of PLC-Based Automatic Control System in a Pilot-Scale Anoxic/Anaerobic/Aerobic/Pre-Anoxic -MBR Plant

In this paper, in order to ensure stable and efficient operation of a pilot-scale modified A2/O (anoxic/anaerobic/aerobic/pre-anoxic) -MBR plant, the automatic control system based on PLC is designed and introduced from the views of system configuration and unit control methods. The master computer undertakes the monitoring and managing task by Siemens WINCC 7.0 configuring software, while the slave computer implements the function of data collection and automatic control based on Siemens S7-300 PLC. Intelligent PID algorithm is utilized to precisely control the influent flow rate, recycled flow rate and DO concentration in aerobic tank in this system. The commissioning and operation practice has proved that the PLC-based automatic control system greatly improved the degree of automation and achieved high nutrient removal efficiency in this plant.

Research on USB Communication in the Compiled-Typed NC System

The compiled-typed NC system compiles NC program into object codes and sends them to slave computers. The object codes generated is a large amount of data. To ensure the data transmission fast and real-time, USB communication is adopted and researched in this paper. The design of USB driver program and communication program in the upper computer and slave computers is mainly introduced.

Study on Process Control Experimental System Based on MCGS

This paper mainly introduces Process Control comprehensive Experimental System Based on MCGS. The system is a small distributed control system. The host computer with Monitor and Control Generated System (MCGS) completes the simulating and monitoring of the controlled objects. And by RS-232/RS-485, it communicates with the slave computer which is made of Siemens PLC (S7-200). The real-time detected and controlled objects are temperature, pressure, liquid level and flow. The collected data are treated and some data of them are calculated by the way of PID operation in accordance with the specific requirements which results will control the actions of actuators. And in addition, the system can be easily combined into a variety of chemical experiments according to different needs. Practice has proved that the experimental device fully simulates industrial control field and it is simple operation and flexible structure, the experimental effect is good

Realization of A Data Communication Card for A High Speed Digital Electronic Engraving Machine

As the digital electronic engraving machine needs high speed and credible communication between a host computer and a slave computer, a data communication card for a high speed digital electronic engraving machine is designed and realized using PDIUSBD12 IC and S3C44B0X IC. PDIUSBD12 IC is USB interface device with parallel bus. In the paper, hardware circuit is described, USB driver program is depicted in detail based on the µC/OS-Ⅱ operation system, and the ways and means of debugging the data communication card are given. It has been experimentally validated that the data communication card is applied successfully and works steadily in high speed digital electronic engraving machines.

Design of Multi-Axis Motion Controlled System Based on SERCOS Bus

SERCOS is an international standard for communication in the digital servo system and electrical drives. It has been increasingly used in industrial automation equipment. This paper introduces the working principle and property of the SERCOS interface, and the SERCOS bus technology is used in the multi-axis motion control system. The PC coordinately control the slave computer through SERCOS bus. At the same time, PC will receive the feedback information of motion parameters timely, which can enhance the flexibility of the control system. SERCOS realizes the multi-axis motion based on the TwinCAT software platform, which has verified the rationality and feasibility of the control structure.

A Design of Focal-plane Compensation of Aviation Imaging Equipment Based on MS5534C

This paper proposes an auto-compensation method for defocusing distance caused by temperature and pressure in aviation imaging equipment. As the host computer, the TMS320F2812 is the core controller and the digital pressure sensor MS5534C from Intersema Company is used as slave computer. The controller acquires the output of the temperature and the pressure from the sensor through MCBSP interface. By the change of temperature and pressure which results in defocusing distance, the software is adopted to compensate the defocusing distance and thereby keeps the stabilization of focal plane in aviation imaging equipment. The design proposal and the software flow is shown in the paper, furthermore the new system has simple interface, small size and real-time function. With many flight tests, the defocusing distance after the compensation of temperature and pressure is far less than the half focal depth of the optical system and it is fully satisfied with the requirements of imaging.

Design of Methane Polymerization Reactor Temperature Monitoring System

The designs to improve the problem such as large temperature fluctuations in polymerization reactor affect the quality of CH4. The slave computer MCU controls temperature sensor to detect temperature; the host computer PC monitors temperature of polymerization reactor, and draws a monitoring interface by Kingview. In order to control the temperature of polymerization reactor, the MCU uses Dahlin algorithm. Meanwhile, the system has real-time temperature displaying, recording, storing, alarming, serial communication and so on functions. Establishing the control system based on the PROTEUS simulation. Experiment shows that temperature is controlled at 200±3°C in the constant temperature phase, and it is superior to polymerization reactor required at 200±5°C.System Experiment Completely Meet the Requirement.

Distributed Parametric and Statistical Model Checking

Statistical Model Checking (SMC) is a trade-off between testing and formal verification. The core idea of the approach is to conduct some simulations of the system and verify if they satisfy some given property. In this paper we show that SMC is easily parallelizable on a master/slaves architecture by introducing a series of algorithms that scale almost linearly with respect to the number of slave computers. Our approach has been implemented in the UPPAAL SMC toolset and applied on non-trivial case studies.

Valve Control System of Oil Depot Based on AnyCAN5000

With application of the embedded microcontroller technology into the valve control, the valve control system of oil depot is designed on the basis of embedded microcontroller AnyCAN5000. The system constitutes of host computer and slave computer, giving designs of hardware and software systems, which is characterized by low cost and high reliability, and with application of the technology in practice the valve control system can bring good effect and meet needs of control.

Research and Development of Electric Control System of Friction Coefficient Test Vehicle for Airport Runway

This paper introduces a friction coefficient test vehicle for airport runway, which consists of the hydraulic system, mechanical system and electric control system. The electric control system uses the host computer - the slave computer joint control way and is the main control unit of the test system. It can implement data acquisition and transmission and control the action of mechanical and hydraulic systems so as to complete the friction coefficient measurements. The host computer is an industrial personal computer and the slave computer is a PLC. The hardware system has the strong control and anti-interference ability. In addition, the software filter is used so as to improve the accuracy of the data. The experimental results show that the friction coefficient test vehicle has reliable performance, high precision and good reproducibility, so it can complete automatically the continuous measurement of airport runway friction coefficient.

Development of an Intellectualized Wireless Infusion Control/Monitoring System

One kind of automatic wireless infusion control/monitoring system based on micro controller unit(MCU) and nRF401 had been designed and implemented to overcome the shortages in the processing of venous transfusion care. The system used AT89C52 single-chip computer as machine’s core, the realization of communication between a master computer and a slave computer with nRF401. Doctors could get the information through the wireless transmission to control and monitor the process of transfusion in time. According to RS232 communication protocol, the system implements the communication between one computer and multi-computer by adopting AT89C51 single chip microcomputer. This system has many advantages, such as low cost, high precision, small volume, convenience, low power consumption, good extendibility and so on.

Research and Implement of Automated Eliminating Bubbles Method Oriented to Vacuum Casting

This paper proposed a new method of automated eliminating bubbles based on vision sense technology because detection and elimination of bubbles of injection materials is key factor which influences the quality of products and hinders realization of full automatic control for the vacuum casting. This method uses vision sensor to replace artificial visual measurement, and adopts processing of the bubbles images to judge the effect of eliminating bubbles instead of experiences of operators. This paper developed a bubbles monitoring control system to realize the automated eliminating bubbles method. The system adopts two-level distributed structure which is consisted of host and slave computers. The slave computer is composed of image acquisition module, controller module and execution module. It is responsible for controlling operation devices to finish vacuum casting. The host computer is responsible for supervisory control which includes human-machine interface module, camera control module and images analysis and processing module. The function of every module is described in detail. The operator is just needed to set relative parameters, and then the system will implement automatically. In a word, the controlling system based on this new method possesses some advantages such as high precision, efficiency and flexibility.