基于VenInf模型的梨黑星病侵染测报器的设计

为了能及时预防和有效控制梨黑星病的发生，该文设计了一种能够实时测报梨黑星病菌侵染数量的便携式侵染测报器。该测报器利用STC89C52RC单片机和温湿度智能传感器SHT15作为核心元器件，实现温度和湿度的实时采集，并根据采集的温度和湿度实时计算梨黑星病菌的相对侵染量，根据侵染量实时预警，实现梨黑星病菌侵染的实时预测与预警。该测报器具有操作简单，界面友好，携带方便，性价比高的特点。经试验验证：测报器测报的准确率高，为果农及时用药防治病害提供了科学依据。

Design of forecasting and alarming device for pear scab infection based on the VenInf model

In order to timely prevent and effectively control the occurrence of pear scab, a portable infection forecasting and alarming device, which could real-time forecast the Venturia nashicola infection quantity, was designed. By making use of the core component MCU STC89C52RC and the temperature and humidity intelligent sensor SHT15, the real-time data acquisition of temperature and humidity was realized. The relative infection quantity of Venturia nashicola was real-time calculated according to the acquired temperature and humidity, and the real-time forecasting and alarming of Venturia nashicola was realized by using of the infection quantity. The forecasting and alarming device has the feature of simple operation, friendly interface, convenient carry and high performance-cost ratio. Experiments have demonstrated that the designed forecasting and alarming device has a high forecast precision, which provided a scientific basis for preventing plant diseases timely for fruit growers.