Sensor moisture leaves

 

(57) Abstract:

Usage: in the systems alarm and prognosis of diseases of agricultural crops, as well as process control their fungicidal protection. The inventive sensor contains a private dielectric traps and outdoor electrodes. Thus closed the electrode is made in the form of two coupled cylindrically plots twisted in the harness, in the cavity of which no entire length placed outdoor the electrode, and the braid is folded into the shape of a spiral, each turn of which is fixed in one place on the holder. 1 Il.

The alleged invention relates to devices for agricultural purposes and is applicable in systems alarm and prognosis of diseases of food crops, as well as process control their fungicidal protection.

Known devices of indirect control of moisture leaves of plants based on different principles. However, they are not perfect, are exposed to various noise, not enough accurate, and may not be used in systems that would provide a streamlined process fungicidal crop protection.

Most near trade, one of which is closed, a second outdoor. Closed made in the form of plate and is located in the dielectric traps, outdoor in direct conductive lines.

Significant drawbacks are low initial sensitivity, which reduces the accuracy of the control of the duration of periods of leaf wetness plants with dew and high humidity. Precise control of the time of hydration is important, because failure of plants to fungal diseases is possible only when the duration of leaf wetness sufficient time to complete the infection process and is often not depends on the cause of the moisture. In addition, the known sensor Trudeau IOC manufactured, as to ensure the required accuracy it is necessary to create a reliable open contact of the electrode with a dielectric traps.

The purpose of the invention improve the accuracy of control of the duration of moist leaves and simplifying the design.

This goal is achieved by the fact that the sensor contains closings dielectric blagoslavlyaya material of the electrode and the open electrode in the form of a conductive line. At the same time its private electrode is made in the form of two conducting liner open electrode. All three conductive lines are twisted into a rope, folded in the form of a spiral, the turns of which is fixed on the holder.

The proposed sensor has a high initial sensitivity and allows you to accurately record the duration of periods of moisture in the dew and high humidity.

For the duration of moist leaves and associated temperature conditions are judged on the possibility and severity of plant diseases and make a decision about the appropriateness and timing of fungicide protection of food crops. The sensor is the main site complex recording or automated systems and information obtained by the sensor, it is possible to ensure the optimization of plant protection: to prevent yield losses to reduce the use of fungicides, labor, and other resources.

The sensor consists of technological elements and simple to manufacture, has a high initial sensitivity, as provided above iny the open contact of the electrode with blagoslavlyaya material.

Schematically the sensor shown in the drawing.

The sensor contains an indoor dielectric blagoslavlyaya material of the electrode 1 C of which is covered with a dielectric blagoslavlyaya material 3. The electrodes are twisted into a rope, folded in the form of a spiral, the turns of which is fixed to the holder 4 and have conclusions 5.

The sensor operates as follows. In dew, rain, fog or artificial wetting on dielectric blagoslavlyaya the material 3 surface appears wet, which increases capacity 1 between the closed and open 2 electrodes, which is removed from the output 5. When the evaporation capacity of the sensor is reduced and the complete vaporization takes the original value. The time from the start of increasing the capacity of the sensor to return to the original value indicates the duration of damp leaves.

Sensor moisture leaves of plants containing the private dielectric blagoslavlyaya material of the electrode and the open electrode in the form of conductive lines, wherein the closed electrode is made in the form of two conductive lines, each of which is covered with a dielectric blagoslavlyaya material and has a diameter greater than the diameter of the open electrode, all three conductive lines are twisted into a rope, folded in the form of a spiral, the turns of which is fixed on the holder.

 

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