| In all the factors that caused the damages to plant .drought hold the first place.From the Bioelectronics' angle.the subject deal with the change of plant electrical signals when the plant is in shortage of water, which also can be regarded as a basis for dialog between human and plant,and do some research work to realize to irrigate the plant when necessary.The subject realize the need of system by the next following.1 Explode the amplified circuit which suited for measuring plant electrical signals.Select the material and shape of sensor eledtrode for measuring plant electrical signals.2 Establishing the plant electrical signals monitoring system when water in the plant changed,the system consists of measuring and amplifying circuit, A/D altering circuit,key displaying circuit, microcontroller,and personal computer.3 Using c-51 language to realize data acquisition of microcontroller,alarm,keyboard display.Using VB 6.0 based on windows operation system to realize the communication between microcontroller and personal computer.Furthermore I use VB6.0 language to visit the database .and analyse .monitor the data and print out.the chart.4 Because the plant electrical signals are ascribed to faint signals ,they are easy to be interfered.The subject remove the interference from the two following aspects-the design of hardware ciucuit and software programe.The subject make an attempt to the practical problem met in measuring plant electrical signals.design and make the plant electrical signals monitoring system. The subject also make some conclusions about the relation between the plant water press and plant electrical signals,then do some research on anti-interference.But because the content which the subject dealed with is an interaccross field -botany and electronics.The function mechanism between the plant physiological factor and plant electrical signals is very complicated,the research is just a first stage work,it can provide a new idea and basis for the next research work.
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