The Design of High-Precision Capacitance Micro-Displacement Sensor

2011 ◽  
Vol 217-218 ◽  
pp. 1797-1801 ◽  
Author(s):  
Li Jun Wang ◽  
Dong Fei Wang ◽  
Xu Hu Wang ◽  
Shu Heng Shi
Keyword(s):  
High Precision ◽  
Design Method ◽  
Displacement Sensor ◽  
Sensor Design ◽  
Digital Converter ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Serial Interface

This paper presents a design method of capacitance micro-displacement sensor, based on the programmable capacitance-digital converter AD7746. AD7746 is controled by Single-Chip Microcomputer which gathers the variation of capacitance from the plates and converts it to the digital quantity.The SCM PIC16F877 connecting with AD7746 through the I²C bus reads the digital quantity converted by AD7746 through software programming, then transmits the data into PC through serial interface,in which the whole high-precision capacitance displacement sensor design is accompished.

High Precision Ultrasonic Ranging System for Mobile Robot Navigation

2012 ◽  
Vol 249-250 ◽  
pp. 1139-1143
Author(s):  
Yan Gao ◽  
Li Na Jia ◽  
Bo Wang ◽  
Li Hua Liu ◽  
Li Ming Huang
Keyword(s):  
Mobile Robot ◽  
High Precision ◽  
High Performance ◽  
Mobile Robot Navigation ◽  
Peak Time ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Detection Point ◽  
Environment Temperature ◽  
Ultrasonic Ranging

This paper introduces ultrasonic ranging system which can be applied to avoid obstacle and navigate for mobile robot .This system is composed of AT89S51 single chip microcomputer ,ultrasonic transmitting circuit, ultrasonic receiving circuit, amplifying and filtering circuit , peak value time detecting circuit, environment temperature compensation circuit. The method of echo peak time detection point is used to eliminate the error. It is proved that The maximum range of the system is 10 meter and maximum measurement error can be controlled to± 2 cm or so. This system has such merits as rapid corresponding, high precision, high performance price rate.

Research on the Measurement System of Large Dimension Workpieces Based on the Technology of CCD and Laser

2010 ◽  
Vol 37-38 ◽  
pp. 1101-1104
Author(s):  
Xiu Min Yang ◽  
Yan Wang ◽  
Wei Lun Zhao ◽  
Lei Zhang
Keyword(s):  
High Precision ◽  
Large Dimension ◽  
Measure Data ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Ccd Sensor ◽  
Line Measurement ◽  
On Line ◽  
Geometry Error ◽  
Control Apparatus

A kind of the measurement technique of the dimension and the geometry error of large dimension workpiece with two light routes and two CCD sensors has been made. The mathematical models of the dimension and the geometry error based on the technology of CCD and laser are established. The application property parameter to measure workpiece dimension and geometry error and the design characteristic related supplemental hardware of CCD sensor are studied. An on-line data collection system based on laser and liner array CCD is developed. This systematic C8051 single-chip microcomputer as controler that adopt American CYGNAL company's production carry out handling and the collection of data. the system meets the measurement requirement of no-touch, on line and high precision with adopting of machine, laser and electricity comprehensive technology. The result can be got in this paper: the CCD sensor can meet the need of measuring dimension and geometry error of big workpiece and is no-touch, on line measurement and high precision. The on line collecting data system can achieve the expecting function, and measure data on line, and it also can easily connect with auto control apparatus.

Fault Signal Detection System of Large Scale Integrated Circuit Based on Single Chip Microcomputer

2014 ◽  
Vol 716-717 ◽  
pp. 924-927
Author(s):  
Xiu Ying Li ◽  
Cun Ping Liu ◽  
Rong Fang Mei
Keyword(s):  
Signal Detection ◽  
Integrated Circuit ◽  
Large Scale ◽  
Detection Method ◽  
Detection System ◽  
Design Method ◽  
Detection Accuracy ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Working Performance

In the process of fault signal detection of large-scale integrated circuit, the fault signal detection can improve the working performance of large-scale integrated circuit. The traditional detection system is simple, time-consuming, and the error is large, the fault signal detection haslow accuracy. In view of this situation, a new design method of large scale integrated circuit fault signal detection system is proposed based on single chip microcomputer. S3C2410 is taken as hardware design basis, and the signal sensor is used, the software algorithm uses three B spline wavelet transform for ORB wave detection method. The detection is completed.The experiment experimental results show that the system can improve the detection accuracy greatly, and effectively improve the work efficiency.

Nanotechnology and high-precision optical displacement sensor design for optomechatronical systems

2008 ◽  
Author(s):  
Ali Rostami ◽  
R. Yadipour ◽  
K. Abbasian ◽  
Z. D. Koozehkanani ◽  
A. Ghanbari ◽  
...  
Keyword(s):  
High Precision ◽  
Displacement Sensor ◽  
Sensor Design ◽  
Optical Displacement

Development of a Control System of Testing Machine for Rock Breaking Based on Single-Chip Microcomputer

2014 ◽  
Vol 1082 ◽  
pp. 495-500
Author(s):  
Meng Yi Zhang ◽  
Yi Zhang
Keyword(s):  
Control System ◽  
Pressure Sensor ◽  
Testing Machine ◽  
Rock Breaking ◽  
Displacement Sensor ◽  
Torque Sensor ◽  
Single Chip ◽  
Digital Signals ◽  
Single Chip Microcomputer ◽  
Analog Signals

A control system of testing machine for rock breaking is developed based on Atmega 16 single-chip microcomputer, which acquires analog signals by a pressure sensor, a displacement sensor and a torque sensor. The system converts the signals into digital signals by means of A/D conversion and data processing, and displays them on the LCD screen. The parameters on the testing machine, such as pressures, displacements and torques, can be achieved in real time in the system. Then they are analyzed to obtain rock breaking characteristics. It is shown by experiment that the system meets the control requirements of the testing machine for rock breaking.

Design of High Precision Earth-Temperature Detection System

2013 ◽  
Vol 427-429 ◽  
pp. 640-643
Author(s):  
Yan Li ◽  
Xiao Hua Sun ◽  
Fu Shun Wang
Keyword(s):  
High Precision ◽  
Curve Fitting ◽  
Detection System ◽  
Platinum Resistance ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Temperature Detection ◽  
Microcomputer Control ◽  
Precision Temperature ◽  
Relationship Of

Based on platinum resistance as temperature medium, according to the measurement precision requirements during geothermal testing process, optimize the circuit design and segmented curve fitting were used, discussed the feasibility of realize high precision temperature detection. Combined with high precision temperature measurement circuit, through the single chip microcomputer control, segmented curve fitting the temperature sampling value, get the corresponding D-t curve, and compensate the nonlinear relationship of platinum resistance in the practical work, to achieve the purpose of accurate measurement of the temperature.

A Temperature Detecting System Based on DS18B20

2011 ◽  
Vol 328-330 ◽  
pp. 1806-1809 ◽  
Author(s):  
Yan Xiang Wu ◽  
Dan Liu ◽  
Xing Hong Kuang
Keyword(s):  
Liquid Crystal Display ◽  
Temperature Data ◽  
Environment Monitoring ◽  
Main Program ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Digital Thermometer ◽  
Serial Interface ◽  
Whole Process ◽  
Operating Process

To overcome the defects of traditional temperature detecting devices, this paper introduces a temperature detecting system based on 1-wire digital thermometer DS18B20. It consists of programmable resolution 1-wire digital thermometer DS18B20, single chip microcomputer (SCM) AT89C51, and the peripheral circuits. The temperature data can be displayed on a liquid crystal display and simultaneously transmitted to a personal computer (PC) via serial interface for remote monitoring after it is detected by sensors. The operating process of DS18B20 and the connection between AT89C51 and PC are introduced in detail. We also provide the main program flowchart and the flowchart of accessing DS18B20 in this paper. The simulation of the whole process is successfully implemented with software PROTEUS. This system can be widely applied in environment monitoring and process control.

Study and Design of CAN Bus Node Based on MC912D60A Microcontroller in Automobile

2011 ◽  
Vol 201-203 ◽  
pp. 2317-2321
Author(s):  
Ji Fei Chen ◽  
Long Qing Zhao
Keyword(s):  
Design Principle ◽  
Can Bus ◽  
Design Method ◽  
Area Network ◽  
Single Chip ◽  
Real Time Control ◽  
Single Chip Microcomputer ◽  
Wiring Harness ◽  
Time Control ◽  
Flow Charts

Controller Area Network (CAN) is a kind of serial communication network that supports the distributed control and the real time control. The CAN have high performances and high reliabilities. It can solve many problems of complex circuitry, wiring harness increasing, operation reliability reducing and the difficulty of fault maintain increasing while using CAN Bus technology in automobile. In this paper, the form of CAN bus and node design method based on MC912D60A single chip microcomputer were studied and introduced. At last, the hardware design principle diagrams and software flow charts were given.

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