Papers by Keyword: Digital Display

Abstract: Water quality monitoring is crucial in various fields, including environmental protection, aquaculture, and industrial processes. One of the most critical parameters in water quality assessment is pH, which indicates the acidity or alkalinity of a solution. Traditional pH monitoring methods, such as colorimetric techniques, are often subjective and unsuitable for continuous measurement. Meanwhile, while accurate, commercial electronic pH meters are expensive and inaccessible for small-scale applications. This study presents the design and implementation of a cost-effective, real-time pH monitoring device using Arduino technology. The device integrates a pH sensor probe, an Arduino Uno microcontroller, and an LCD display to provide accurate and immediate pH readings. The system was calibrated using standard buffer solutions (pH 4.0 and pH 7.0) and tested against a standard laboratory pH meter. Experimental results demonstrated that the constructed device had an average error margin of ±0.04 and ±0.02 for the standard buffer solutions, respectively, making it a viable alternative for small-scale and field applications. Additionally, the system exhibited a fast response time of 3–5 seconds, ensuring real-time monitoring capability. The total project cost was approximately ₦136,400, significantly lower than commercial pH meters, which range between ₦3,000,000 and ₦5,000,000. The study highlights the feasibility of using open-source electronics for cost-effective environmental monitoring. Future improvements, such as wireless connectivity, temperature compensation, and multi-parameter sensing, could further enhance its functionality. This research contributes to the development of affordable and reliable pH monitoring solutions, particularly in resource-limited settings, making it a valuable tool for water quality management.

Abstract: This article describes a real-time temperature measurement system based on ARM9 and temperature sensor DS18B20. The temperature signal is collected by DS18B20 and converted into 16 bits serial digital signal. Later, ARM9 receives the signal and sends it to the wireless transceiver module PTR2000. PTR2000 sends the received signal to ARM9. At last the signal is transmitted to the LCD for a real-time display, also be sent to the printer for detailed records. Our design proposal is simple and practical.

Abstract: Aim to the current popularity of various sports which scoring device is inconvenient and defective scoring, this design uses 51 MCU control, battery power, digital display, input keys and wireless control module to develop a portable smart match electronic scoring device. The device has a charging indicator, ball selection, single-sided display settings, size of the Bureau of scores shows that beep audio prompts, change sides scores mobile, long distance remote control and other functions; particularly compact and portable, which one could keep working dozens of hours without any power, and you can add large-screen display, which perfectly suited all size of table tennis, badminton, volleyball and basketball games in the stadiums.

Abstract: The paper discusses the principles and shortcomings of the concrete mixer truck’s hydraulic control mechanism. The stepper motor technology controlled by the electrical impulses is used to develop a new digital display control device, and determine design principle and implementation process of the electronic control part. At the same time, it develops control device’s digital display mechanism and wireless remote control devices. At last, it compares the performance advantages and disadvantages between the traditional mechanical control handler and the digital display remote controller according to the engineering practice.

Abstract: The paper studies the principle and the flaw of the hydraulic control organization of concrete mixer truck, and designs one kind of brand-new Digital Display control devise. According to principle of the new Digital Display control devise, it has determined shifting block’s displacement quantity and the displacement limit of the key component of unloading Control devise. At the same time, the design has realized the accelerograph’s control device, and compared with the merit and demerit between the new and old control devise based on the basis of the practice application.

Abstract: The design principle and method of infrared ray automatic detection system for grinding temperature are introduced. The Grinding Temperature Automatic Detector was designed. The system can complete temperature’s correct detection and display in the grinding field of grinding mill. All grinding mills in workshops are connected to center survey room by modern net communication technology. Center survey room can directly display and print temperatures of any grinding mill by computers, and give command to operators to adjust grinding parameters, to trim grinding wheel, to change cool strength, so that high quality and high efficiency grinding machining can be realized in the limited grinding temperature scope. For the detector, temperature detecting scope is 0~1500oC. It is identified that the relative detecting precision is less than 0.5%. The detector is connected with center survey room to form local area network, to transfer the grinding information rapidly and correctly.