英语翻译如今,温室大棚的数量不断增多、技术日益普及,如何对温室大棚的温度进行更好的控制也成为了关键.目前应用于温室大棚的温度检测系统大多采用由模拟温度传感器、多路模拟开关

英语翻译如今,温室大棚的数量不断增多、技术日益普及,如何对温室大棚的温度进行更好的控制也成为了关键.目前应用于温室大棚的温度检测系统大多采用由模拟温度传感器、多路模拟开关
英语翻译
如今,温室大棚的数量不断增多、技术日益普及,如何对温室大棚的温度进行更好的控制也成为了关键.目前应用于温室大棚的温度检测系统大多采用由模拟温度传感器、多路模拟开关、A/D转换器及单片机等组成的传输系统.这种温度采集系统需要在温室大棚内布置大量的测温电缆,才能把现场传感器的信号送到采集卡上,安装和拆卸繁杂,成本也高.同时线路上传送的是模拟信号,易受干扰和损耗,测量误差也比较大,不利于控制者根据温度变化及时做出决定.
本课题提出一种基于单片机并采用数字化单总线技术的温度测控系统应用于温室大棚的的设计方案,该方案是利用温度传感器将温室大棚内温度的变化,变换成电流的变化,再转换为电压变化输入模数转换器,其值由单片机处理,最后由单片机去控制数字显示器,显示温室大棚内的实际温度.一旦该温度值超过我们预先设定的上、下限,单片机便启动报警系统进行报警,进而对大棚内温度进行控制.
本设计方案是以AT89C2051单片机为核心,采用智能温度传感器DS18B20对温室大棚内的温度进行定时采集,测量结果不仅能在本地显示,而且可以利用单片机串行口,通过RS-485总线及通信协议将采集的数据传送到计算机,进行进一步的存档、处理.该测控系统不需要任何固定网络的支持,安装简单方便,系统稳定可靠、可维护性好.

英语翻译如今,温室大棚的数量不断增多、技术日益普及,如何对温室大棚的温度进行更好的控制也成为了关键.目前应用于温室大棚的温度检测系统大多采用由模拟温度传感器、多路模拟开关
Today, the amount of greenhouse growing, the growing popularity of technology, how the temperature of the greenhouse better control became the key. Currently used in the greenhouse temperature detection systems are used by the analog temperature sensors, multi-channel analog switches, A / D converter and SCM, and other components of the transmission system. This temperature acquisition system needs in the greenhouse temperature within the layout of the large number of cables, can the signal sent to the scene of the sensor on the card acquisition, installation and removal of complex, high cost. At the same time line on the analog signal is transmitted, vulnerable to interference and loss, measurement errors are relatively large, are not conducive to control the temperature based on changes in a timely decision.
Based on this subject by a microcontroller and a digital single-bus technology temperature measurement and control system used in the design of the greenhouse programme, which is the use of temperature sensors will be greenhouse temperature change, transform into a current of change, then Enter into a voltage change in ADC, the value handled by the SCM, the last from SCM to control digital displays showing the actual greenhouse temperature. Once the temperature exceeded our pre-determined, the minimum level, SCM will activate alarm system for alarm as well as on the greenhouse temperature control.
The design of the programme is based on AT89C2051 microcontroller as the core, a smart temperature sensors DS18B20 the greenhouse temperature within the regular collection, measurement results can not only locally, but also can use the microcontroller serial port, through the RS-485 Communication lines and the data collected will be sent to the computer, further filing, processing. The monitoring system does not require any fixed network support, installation simple, stable and reliable system, maintainability good.

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Today, the amount of greenhouse growing, the growing popularity of technology, how the temperature of the greenhouse better control became the key. Currently used in the greenhouse temperature detecti...

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Today, the amount of greenhouse growing, the growing popularity of technology, how the temperature of the greenhouse better control became the key. Currently used in the greenhouse temperature detection systems are used by the analog temperature sensors, multi-channel analog switches, A / D converter and SCM, and other components of the transmission system. This temperature acquisition system needs in the greenhouse temperature within the layout of the large number of cables, can the signal sent to the scene of the sensor on the card acquisition, installation and removal of complex, high cost. At the same time line on the analog signal is transmitted, vulnerable to interference and loss, measurement errors are relatively large, are not conducive to control the temperature based on changes in a timely decision.
Based on this subject by a microcontroller and a digital single-bus technology temperature measurement and control system used in the design of the greenhouse programme, which is the use of temperature sensors will be greenhouse temperature change, transform into a current of change, then Enter into a voltage change in ADC, the value handled by the SCM, the last from SCM to control digital displays showing the actual greenhouse temperature. Once the temperature exceeded our pre-determined, the minimum level, SCM will activate alarm system for alarm as well as on the greenhouse temperature control.
The design of the programme is based on AT89C2051 microcontroller as the core, a smart temperature sensors DS18B20 the greenhouse temperature within the regular collection, measurement results can not only locally, but also can use the microcontroller serial port, through the RS-485 Communication lines and the data collected will be sent to the computer, further filing, processing. The monitoring system does not require any fixed network support, installation simple, stable and reliable system, maintainability good.

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