單片機(jī)外文翻譯----at89c51單片機(jī)控制的恒溫水域溫控系統(tǒng)-單片機(jī)-在線瀏覽
2025-03-24 07:56本頁(yè)面
【正文】 Proved by the use of the design， to meet the current chemistry, chemical engineering and research needs of the experimental results. 6 AT89C51 單片機(jī)控制的恒溫水域溫控系統(tǒng) 針對(duì)化工早期接點(diǎn)溫度計(jì)恒溫水域控溫存在的缺點(diǎn)，本文介紹了一種基于AT89C51 單片機(jī)為主控制器，結(jié)合 AD590J 集成溫度傳感器等組成的恒溫水域溫控系統(tǒng)。 temperature: ℃ 。1 AT89C51 singlechip temperaturecontrolled water temperature control system Early contact thermometers for chemical water temperature thermostat shortings, this paper introduces an approach based on AT89C51 singlechip microputerbased controller, bined with integrated temperature sensor AD590J posed of constant temperature water temperature control system. Chemical, chemical experiments and research on water temperature requirements of high performance and accuracy, the current market face chemistry, chemical experiments and study the high price of heated water systems. In this paper, the design of singlechip ponent AT89C51 from the temperature control system for people with lowcost, high precision, intelligent control, etc. The water temperature of the performance indicators are: Temperature range: 0 ~ 1O0 ℃ 。 temperature range: 0 ~ ℃ 。 heating power: 1000W. Part of the hardware circuit AT89C51 selected as the system CPU, it is a lowpower, high performance, 4kB flash chip programmable / erasable readonly memory 8bit microcontroller COMS. Block diagram of the system AT89C51 singlechip by chip, IO expansion port 8255 chip, 8032 chip digitaltoanalog conversion, analogtodigital conversion chip 0809, keyboard control, status indication circuit, sampling circuit temperature thermostat control circuit, driver circuit and display circuit, such as group into. temperature sampling circuit Temperature sampling circuit using AD590 currentmode temperaturesensitive device of its stability and linearity are better. When in AD590 for the current , temperature increase 1℃ , the current increase in 1uA. The current is converted to voltage signal by analogtodigital converter ADC0809, AT89C51 singlechip temperature monitoring and conversion. One resistor R measurement using a low temperature coefficient of resistance, temperature coefficient of 10 x l0_6 / ℃ . When monitoring the temperature of lO0 ℃ when generated in the resistor voltage about, when the temperature is 0 ℃ when generated in the resistance of about 1 voltage, that is, at a temperature of 0 ~ 1O0 ℃ in resistance on pressure drop 2 resulting from bad to 5v. However, when the temperature is 0 ℃ demodulation IC2 potential output allows for OV, the time when 1O0 ℃ for IC2 output 5v, in the constant temperature water tank 3 installed AD590, which are located under the sink in the various parts,
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