STC89C52 Single-chip Microcomputer Research Articles

Design of Stopwatch based on STC89C52 Single Chip Microcomputer

This design is according to the requirements of the wide rider, and the Multi-function bike computer has the function of velocity measurement, display, timing, lighting, buzzer warning, which could satisfy the requirements of cycling enthusiasts. This design is based on STC89C52 SCM (Single Chip Microcomputer) smallest system and uses hall sensor receives the bicycle wheel rotation numbers date, and then transmit the received data into the SCM. After the SCM’s calculation and processing, it gets the bicycle’s instantaneous speed, mileage, riding time through the LED display the date. The part of software programming use C language, which compiles and downloads by the Keil and STC-ISP. This design uses Proteus to make the circuit diagram drawing and system simulation. The overall program adopted modular approach, and each module has a special function. The idea which makes the program more clear, is advantageous to the optimization of code logic and modification.

Design of intelligent wireless monitoring platform

Taking STC89C52 single chip microcomputer as the controller, the communication carrier adopts low-power Bluetooth 4.0, LCD12864 display screen as the human-computer interaction interface, open-loop stepping motor and closed-loop steering gear as the action actuator, reflective infrared sensor and reflective photoelectric sensor as the detection sensing system, integrating electronics, machinery This set of intelligent wireless monitoring platform developed by *software and other aspects realizes three functions: wireless remote control monitoring, automatic panoramic detection and automatic intrusion alarm. The design has strong practicability. The whole system has the characteristics of low cost and low power consumption. It can play an important role in the field of security.

Design of Fungi Fermentation Cultivation System Based on Single-Chip Microcomputer

With the development of science and technology, the application field of fungi fermentation production is becoming wide than ever before. In view of the strict requirements of high-quality fungi fermentation on the cultivation environment, a fungi fermentation cultivation based on STC89C52 single-chip microcomputer is designed. The system uses STC89C52 single-chip microcomputer as the control unit. The sensor detects the temperature, humidity and alcohol content of the cultivation environment. Then the data is analyzed and adjusted by the single-chip microcomputer in real time. Thus, the temperature, humidity and alcohol content in the cultivation environment can be in the optimal range and the parameters control of cultivation environment is realized. The system can monitor and adjust the parameters of cultivation environment in real time and improve the efficiency and productivity of fungi cultivation through the preliminary test. It can be predicted that the comprehensive research of electronic science and technology and technique of microorganisms cultivation will inevitably become the important matter and research aspect in the future.

Design of temperature humidity and illumination control system for indoor flowers

In order to improve the automation of indoor flower environment monitoring, enable the flowers grow in the best environment, this paper designs an automatic control system of temperature, humidity and illumination based on STC89C52 single chip microcomputer. Temperature sensor DS18B20 is applied to sense indoor air temperature, meantime, YL-69 soil moisture sensor and photosensitive resistance are used to sense soil relative humidity and light intensity respectively. Temperature, humidity and light intensity are transmitted to single chip microcomputer for analysis and processing, and the results are displayed by OLED display module. The upper and lower limits of environmental parameters are manually preset through the keyboard. When the temperature and light intensity exceed the upper limit, the system can send out alarm signals and output control signals to drive the corresponding actuator to work; when the soil moisture is lower than the lower limit, the system will automatically alarm and water automatically; when the humidity reaches the upper limit, watering will be stopped to ensure the indoor environmental parameters in the best value suitable for flower growth. The system has been tested and debugged. The results show that the control system can effectively process and display the flower environment information, achieving the purpose of automatically adjusting and controlling the temperature, humidity and illumination of flowers, has strong promotion value.

Flower “Dock” - Single Chip Microcomputer-Based Smart Flowerpot

The design of the smart flowerpot is based on STC89C52 single-chip microcomputer, which uses photosensitivity and photoelectricity, that usually used in the environment detection sensor, to perform the real-time monitoring of flower growth, in order to maintain the environmental parameters suitable for flower growth inside the flowerpot, and guarantee a stable and healthy living environment for plants and evaluate the health status. The overall system adopts a modular design, and takes the measurement of soil temperature and humidity sensor module as an example for detailed design. The smart flowerpot has the advantages of simple and stable operation and convenient debugging.

Design of the Anti-Omission Shared Lockers System Based on the Single Chip Microcomputer

In recent years, shared lockers have been widely used in supermarkets, libraries, exhibition halls and other places due to their features of high safety, reliability and convenience. However, existing lockers, because of their depth, tend to lose small items and are difficult to find. In addition, traditional barcode lockers are also easy to lose barcode. Based on this background, this paper presents a design scheme of the system for anti-omission of the shared locker based on the single chip microcomputer (SCM). In the scheme, STC89C52 single chip microcomputer is used as the main control chip, and the pressure sensor is used to detect whether there are things in the shared lockers and send the information to STC89C52 single chip microcomputer to achieve anti-omission function. Supplemented by relevant keyboard module, which is the input module of the system. Furthermore, display module and voice module are the output module of the system. The fingerprint module is used to input the user’s information and used the information to open the door of shared lockers. GSM (global system for mobile communication) module is used to get help from administrator when the user needs to help, and so forth. This system can realize the function of preventing omission and it is simple to operation, high security, easy to manage by the administrator.

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

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.

Design of Water Heating and Temperature Control System Based on STC89C52

An intelligent system for water temperature control is designed in this paper based on STC89C52 single-chip microcomputer, in which temperature sensor DS18B20 is used to collect temperature data. This system adopts successive approximant algorithm and incremental PID control algorithm to change PWM pulse outputted by single-chip microcomputer and thus can realize heating and cooling function within a range between 30 °C and 100 °C as well as automatic control on constant temperature randomly set in the whole process. Result of experiments and tests indicated that this system can function stably, which can realize satisfactory control result and meet design requirements.

Research on Electronic Coin Recognition System Based on STC89C52

STC89C52 single-chip microcomputer is used as control core of the system, and characteristics of photoelectric switch is used to design a scheme for detection of face value of coins based on different sizes of coins. Genuine coins and counterfeit coins have different size and mass, based on which the combination of strain sensor and photoelectric switch is put forward to design a scheme for identifying genuine coins and counterfeit coins. In this paper, hardware and software design of the system is introduced in a detail way and system testing is conducted at last, the result of which indicates that the system can realize the identification, classified statistics, sound and light prompting for coins with different face values as well as identification of genuine coins and counterfeit coins, and thus has a certain degree of prospect for application and value of promotion.

Design of Indoor Harmful Gas Monitor System

As people live or work on indoor environment of the perfect pursue, for from the household decorates the toxic gas such as formaldehyde, CO, and combustible gas of main composition methane (natural gas) will pay more attention to low concentration requirements. in order to build a safe and healthy environment, we design a simple and practical monitoring system, when the harmful gas exceeds bid, it can tell people in indoor gas solubility and promptly report to the police [1]. In this paper, we design the monitoring system using the MQ2 gas sensor as a receiver, STC89C52 single-chip microcomputer as the core, 1602 LCD for displaying output, used for indoor and toxic gas detection, according to at the same time equipped with a buzzer alarm output.

A Novel Full-Automatic Garbage Salvage Ship

The garbage salvage ship is made from polystyrene plastic as hull framework and STC89C52 single-chip microcomputer to control the core, and consists of DC gear motor, photoelectric sensor, power circuit and other circuits. The system uses STC89C52 to control the boat to move forward, backward or turn through the I/O port. Tracing is finished by infrared obstacle avoidance sensor E18-D80NK. Working manner of the infrared obstacle avoidance sensor E18-D80NK was introduced and its application scheme based on STC89C52 single-chip microcomputer in the control system of garbage salvage ship was put forward.

A Hardware Design of Fish Tank Intelligent Purification System

In the breeding process of Tropical fish,water quality and temperature have higher requirements. This paper mainly introduces a kind of fish tank intelligent purification system.This system with the control core of STC89C52 single-chip microcomputer adopts photoresistor and LED technique at the same time, realizing the real-time collecting the data about water quality and light source. Through the above analysis of the data,this system completes the function of intelligent water purification in fish tank. This system features in compact module, simple circuit, powerful functions and flexible expansion.

Design and Implementation of SCM-Based Smart Cars

With the background of the higher vocational college students' innovative of 2010 national test plan, This paper introduces an intelligent controlling system of smart car. Which takes the STC89C52 single-chip Microcomputer as the core of control and black and white line sensors as sensing component. At the same time, the light signal is transmited by using sensors and voltage comparator lm393 to detect the black line on the road; meanwhile this detection signal is transmited to microcontroller signal port, with analysising by Microprocessor control . The smart car can travel by black line. This project involves control technology, the sensor technology, computer and power electronics and other professional domain knowledge, make the car can imitate human thought complete scheduled tasks.