Design of Ultrasonic Rangefinder Controlled by Single Chip Microcomputer

2014 ◽  
Vol 599-601 ◽  
pp. 1470-1473 ◽  
Author(s):  
Jian Pu Bia ◽  
Mei Xia Gao
Keyword(s):  
Real Time ◽  
Ultrasonic Wave ◽  
Hardware Design ◽  
Design System ◽  
Laser Rangefinder ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Display Module ◽  
Single Chip Computer ◽  
Ultrasonic Ranging

This paper discusses the ultrasonic rangefinder car reversing system working principle based on single chip microcomputer control. Ultrasonic ranging module HC-SR04 is called to transmit and receive ultrasound by single chip computer, temperature is detected through the DS18B20 temperature sensor, the compensation of ultrasonic velocity influenced by temperature is done, and the display and alarm of distance and temperature are achieved by combining with the peripheral circuit module. On the basis of system hardware design, system software is designed and analyzed in detail. At present, traffic accidents multiplied considerably with the exponential increase of the number of sedans in the domestic. For this reason, varied demands are put forward about reversing system. There are many varieties of reversing system, divided into three kinds: laser rangefinder reversing system, infrared rangefinder reversing system and ultrasonic rangefinder reversing system. It is the operational principle of laser rangefinder reversing system that the distance between the car and the object is figured out by calculating the time from laser shot, vehicle mounted laser transmitter emits a very fine laser to the target, to receiving the bounced laser which is received by the optoelectronic device from the target. The advantages of the system are that the range is extremely accurate and the effect of real-time control is striking. However, it is more expensive than others. Infrared rangefinder reversing system measures the distance based on the principle of infrared light without diffusion with the modulated infrared. And the measurement range generally is 1 to 5km. The real time of this reversing system is not very good but it has price advantage. Ultrasonic transmitter launches ultrasound to the obstacle, starting the timer, and the wave will be reflected .At the same time, ultrasonic receiving module detects the reflected beam constantly. Once reverberated ultrasound was detected, timekeeper stops working. According to the time displayed in the timer and the velocity of propagation of the beam in the air this moment, and after they are processed by single-chip micro-computer, the distance between car and barrier is figured out .The above is the working philosophy of ultrasonic rangefinder reversing system. The system is worse than laser rangefinder reversing system and infrared rangefinder reversing system in accuracy and real time for the influence of environment on the ultrasonic wave is relatively large. The requirements of family car for these two aspects are not very high and the ultrasonic rangefinder reversing system is cheaper than the other two systems, so this design uses the ultrasonic ranging scheme. Hardware Design of the System Transmitting and receiving ultrasonic are controlled by single-chip microcomputer in this system. First, what the system has to do is completing the ranging task without contact, detecting the temperature at the time to compensate the velocity of ultrasonic and figuring out the propagation velocity of ultrasound this moment in the air. Finally, the distance can be calculated with the speed detected by the single chip computer and the propagation. Then a series of data is processed in single-chip microcomputer and then set to the peripheral devices which fulfill the corresponding display, alarm and other tasks. So the driver can get the information quickly to make the appropriate action. Affected by the sensor characteristics, the system can carry on the distance measurement in the 3m range, the exact data shown in LCD, test and display the field temperature and compensate the corresponding velocity of ultrasonic wave to increase the applications. If the distance is less than 100 cm, buzzer makes alarm in a certain frequency, the lights of the digital pipe which is used for displaying data flashes and light-emitting diode lights to tell the driver the corresponding distance. And the frequency of buzzer becomes higher as the distance becomes closer. If the distance is beyond the measuring range, the distance display module shows 3 bars, LED lights, trembler buzz, while the temperature measurement module and the temperature display module work regularly.

Ultrasonic Ranging System Based on Single Chip Microprocessor

2013 ◽  
Vol 441 ◽  
pp. 360-363
Author(s):  
Xian Cheng Fu ◽  
Lei Zhou ◽  
Guo Jun Wen
Keyword(s):  
Ultrasonic Wave ◽  
Lower Price ◽  
Measuring System ◽  
Single Chip ◽  
Combined System ◽  
Display Module ◽  
General Plan ◽  
Ultrasonic Ranging ◽  
The Cost ◽  
Distance Measuring

Ultrasonic ranging (UR) technology has being used widely in many industries around the world. This paper aims to design and manufacture an ultrasonic distance measuring system with lower price and higher accuracy. Based on the deep study of principle of ultrasonic ranging, we designed the general plan and detailed electrical circuits for the ultrasonic distance measuring system based on single chip microprocessor of AT89S52, including the transmitter module of ultrasonic wave, receiving module of ultrasonic wave, display module etc. Then, we compiled the relative driven programs for all modules. After that, we debugged the combined system of hardware and software system. At last, the experimental results show that the cost is about 300RMB for 3 prototypes, measuring rang is 0.16~1.5m with the accuracy of 0.001mm, which means the ranging system meets the design requirements of lower price and higher accuracy.

Research on IOT-Based Smart Garden Project

2014 ◽  
Vol 608-609 ◽  
pp. 321-325 ◽  
Author(s):  
Xiao Juan Duan
Keyword(s):  
Wireless Sensor Network ◽  
Real Time ◽  
Sensor Network ◽  
Irrigation System ◽  
Wireless Sensor ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Control Data ◽  
Single Chip Computer ◽  
Time Acquisition

For artificial irrigation in excess or deficiency, not timely and other shortcomings, the paper expounds the application in agricultural and landscape irrigation system based on the wireless sensor network and single chip computer; at the same time the paper designed system architecture of automatic irrigation system based on wireless sensor network. The hardware of the system adopts CC2430 single chip microcomputer as control core, by the real-time acquisition and processing of data in wireless sensor networks, the control data by wireless way is sent to the irrigation controller. The system can real-time monitor the soil temperature and humidity changes, r realize fine flower required and efficient use of water resources.

Single Chip Microcomputer Cluster Management

2014 ◽  
Vol 933 ◽  
pp. 584-589
Author(s):  
Zhi Chun Zhang ◽  
Song Wei Li ◽  
Wei Ren Wang ◽  
Wei Zhang ◽  
Li Jun Qi
Keyword(s):  
Real Time ◽  
Management System ◽  
Large Scale ◽  
Fault Tolerant ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Cluster Management ◽  
The Real ◽  
Time Performance ◽  
Operational Phase

This paper presents a system in which the cluster devices are controlled by single-chip microcomputers, with emphasis on the cluster management techniques of single-chip microcomputers. Each device in a cluster is controlled by a single-chip microcomputer collecting sample data sent to and driving the device by driving data received from the same cluster management computer through COMs. The cluster management system running on the cluster management computer carries out such control as initial SCM identification, run time slice management, communication resource utilization, fault tolerance and error corrections on single-chip microcomputers. Initial SCM identification is achieved by signal responses between the single-chip microcomputers and the cluster management computer. By using the port priority and the parallelization of serial communications, the systems real-time performance is maximized. The real-time performance can be adjusted and improved by increasing or decreasing COMs and the ports linked to each COM, and the real-time performance can also be raised by configuring more cluster management computers. Fault-tolerant control occurs in the initialization phase and the operational phase. In the initialization phase, the cluster management system incorporates unidentified single-chip microcomputers into the system based on the history information recorded on external storage media. In the operational phase, if an operation error of reading and writing on a single-chip microcomputer reaches a predetermined threshold, the single-chip microcomputer is regarded as serious fault or not existing. The cluster management system maintains accuracy maintenance database on external storage medium to solve nonlinear control of specific devices and accuracy maintenance due to wear. The cluster management system uses object-oriented method to design a unified driving framework in order to enable the implementation of the cluster management system simplified, standardized and easy to transplant. The system has been applied in a large-scale simulation system of 230 single-chip microcomputers, which proves that the system is reliable, real-time and easy to maintain.

Design of Data Acquisition and LED Display System

2012 ◽  
Vol 468-471 ◽  
pp. 863-866
Author(s):  
Hai Feng Zhou ◽  
Jing De Dong ◽  
Yuan Qing Huang
Keyword(s):  
Data Acquisition ◽  
Display System ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Display Module ◽  
Communication Module ◽  
Set Up ◽  
Led Display System ◽  
Data Acquisition Module ◽  
Hardware Circuit

This paper set up a data acquisition system by AT89C52 single chip microcomputer as control core, using the RS-232 serial manner communicated with responsibled for data acquisition of microprocessor, and used LED to display. System can be divided into data acquisition module, serial communication module, control module, keyboard module, display module, etc. System of multi-channel data acquisition can be displayed in the LED after processed. The hardware circuit and software realized design functions :data acquisition and LED display.

The Hardware Design of Ultrasonic Flaw Detector Based on Single-Chip Microcomputer AT89C52

2013 ◽  
Vol 423-426 ◽  
pp. 2427-2430
Author(s):  
Wei Liu ◽  
Zhuo Lin Miao ◽  
Huan Xin Cheng ◽  
Li Cheng
Keyword(s):  
Nondestructive Testing ◽  
Research Work ◽  
Hardware Design ◽  
Flaw Detector ◽  
Ultrasonic Nondestructive Testing ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Main Research ◽  
Ultrasonic Flaw Detector ◽  
Ultrasonic Flaw

Ultrasonic nondestructive testing is an important detection method in nondestructive testing field. It is widely used in steel manufacturing, machinery manufacturing, electronics manufacturing, aerospace and defense and other fields and departments to ensure production quality and safety. In this paper, the main research work and research results are as follows: analyze the principle of electromagnetic ultrasonic nondestructive testing and characteristic and the hardware design of ultrasonic flaw detector system based on single-chip microcomputer AT89C52. This paper laid a good foundation for more in-depth studies in the research of ultrasonic digital signal processing in future.

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.

scholarly journals Design of Intelligent Monitoring System of Chicken House Environment Based on Single-chip Microcomputer

2018 ◽  
Vol 227 ◽  
pp. 02008
Author(s):  
Qing Du ◽  
Yanhua Miao ◽  
Yunhui Zhang
Keyword(s):  
Carbon Dioxide ◽  
Light Intensity ◽  
Real Time ◽  
Monitoring System ◽  
Carbon Dioxide Concentration ◽  
Environmental Parameters ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Intelligent Monitoring ◽  
Chicken House

In view of the problem that some chicken farms are susceptible to various bacteria and viruses due to poor breeding environment, this paper designs a chicken house environmental intelligent monitoring system based on single-chip microcomputer application to improve the chicken house environment. The system adopts STC89C52 single-chip microcomputer as the main control chip. The sensor collects information on the light intensity, temperature and humidity, and carbon dioxide concentration, and controls the exhaust fan and the illumination lamp, and the environmental parameters can be displayed on the display in real time.

A Design of Carbon Oxide Sensor in Mine

2013 ◽  
Vol 273 ◽  
pp. 528-531
Author(s):  
Wei Peng An ◽  
Lin Xing
Keyword(s):  
Carbon Monoxide ◽  
Real Time ◽  
Carbon Oxide ◽  
Electrochemical Sensing ◽  
Personal Safety ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Gas Concentration ◽  
Display Function ◽  
Hardware Circuit

Monitoring of carbon monoxide gas is an important reference for the monitoring system, to provide protection for the personal safety of the miners. This paper introduces the AT89S52 [1] single-chip microcomputer as the core design of carbon monoxide sensor, realizes the carbon monoxide gas concentration detection. The sensitive head electrochemical sensing original hardware circuit by the amplifier circuit, A / D conversion circuit, display circuit, alarm circuit, an infrared receiving circuit, and the DS18B20 temperature sensor and other components. With real-time monitoring of carbon monoxide sensors, anti-jamming and real-time display function, and through the infrared circuit design makes the operation more convenient, higher accuracy.

Development of an Intellectualized Wireless Infusion Control/Monitoring System

2011 ◽  
Vol 480-481 ◽  
pp. 790-794
Author(s):  
Li Jun Bi ◽  
Hong Yu Sun ◽  
Shou Shan Liu
Keyword(s):  
Monitoring System ◽  
Small Volume ◽  
Communication Protocol ◽  
Low Cost ◽  
Wireless Transmission ◽  
Low Power Consumption ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Single Chip Computer ◽  
Micro Controller Unit

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.

Design of an Intelligent Controller for Control and Protective Switching Based on Profibus

2012 ◽  
Vol 588-589 ◽  
pp. 1401-1404
Author(s):  
Zhi Yuan Cai ◽  
Hong Yuan Ai
Keyword(s):  
Real Time ◽  
Remote Monitoring ◽  
Host Computer ◽  
Single Chip ◽  
Real Time Monitoring ◽  
Single Chip Microcomputer ◽  
Switching Device ◽  
Intelligent Controller ◽  
The Core

An intelligent controller with capable communication for control and protective switching device (CPS) based on Profibus fieldbus was designed. The system with the single chip microcomputer as the core realized the function of measuring, protection, controlling and communication between CPS and host computer by Profibus fieldbus. The design could not only realize real-time monitoring for running state of multiple electromotor but also set the protection parameters of CPS and alarm function online by interface, which made CPS have remote monitoring function.

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