Based On ARM Chip Temperature Detection And Data Collection

With the rapid development of national economy and people’s living needs gradually improving, demand for aluminum is also increasing, the amount of aluminum production hit record highs. Modern aluminum industry mainly uses aluminum trough provisioning methods, such aluminum smelting process requires a great deal of energy, a large part of energy in the process of heating the cell is converted to heat. However, this process requires the electrolytic solution is maintained at a higher temperature range, at this temperature environment, to extract the aluminum crystals. If we can reduce and refine the appropriate temperature range, the electrolyte in a suitable crystallization temperature of the environment, for large aluminum plant will greatly reduce power consumption, for the sustainable development of great significance.The main purpose of this lesson is to design an ARM-based primary crystallization temperature detection system, the system for the embedded Linux operating system to ARM7Cortex-A8model series as the main processor. Through the distal end of the thermocouple temperature gun to measure the temperature of electrolyte in the cell, the temperature signal is converted to a voltage signal, since the voltage signal generated by the smaller, the need for further conditioning of the voltage signal, including amplifying the voltage signal transmitted, filtering. After A/D converter ADS8345will be stored electrical signal conversion thermocouple temperature gun extracted digital signals, the digital data will be obtained through a series of processes in the input to the ARM Cortex-A8core plate, and then signal can be carried out by a linear manner on the computer display or LCD screen, it is easier to find the primary crystallization temperature points. In which the entire process temperature and extracted with every10milliseconds, so be able to fully achieve the requirements of the aluminum industry, but also the temperature of the electrolyte in the cell is displayed instantly, while the design of the Linux operating system is simple, convenient for people Use of the aluminum industry will have a huge impact.This article focuses on the embedded circuit board design, mainly to complete the work:(1) The overall scenario describes the processing of primary crystallization temperature, analyzes the basic principles embedded processing.(2) temperature gun temperature acquisition process used to introduce the principle of a thermocouple temperature gun to signal processing and filtering circuits. (3) temperature signals into electrical signals for A/D conversion processing, including A/D converter ADS8345introduced, and a signal processing circuit includes an amplifying circuit and the filter circuit.(4) ARM core board design, presentation interface circuit design Cortex-A8core board also includes USB external expansion, LCD, wireless interface design.(5) The stability and accuracy of the test procedures and field testing experimental verification of the circuit board.