RU2581481C2 - Duplex electrical shock-excitation cultivator - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: invention relates to high-frequency equipment and may be used in agriculture for the removal of weed vegetation, pruning as well as the use of technologies related to the impact of electric current on vegetation. A duplex electrical cultivator comprises a power supply source coupled by its output to an input of the first electronic commutator switch, a clock generator coupled by its output to control inputs of the first and third electronic commutator switches, a capacitive storage coupled by its first output to an output of the first electronic commutator switch and an input of the second electronic commutator switch, a pulse transformer connected by the first output of its primary winding to an output of the second electronic commutator switch, an active electrode coupled to the first output of a pulse transformer secondary winding, an admittance analyzer coupled by its input to the second output of the secondary winding of the pulse transformer coupled in its turn to an earthed electrode and by its control output connected to a control input of the second electronic commutator switch. In the duplex electric cultivator there is an additional pilot winding placed directly at the pulse transformer and current setting device coupled by its output to an input of the third key, which output is coupled to the first output of a pilot winding. The second outputs of the power supply source, capacitive storage, primary and pilot windings of the pulse transformer are coupled to the common wire.

EFFECT: simplified design, high efficiency factor, wide range of application spheres and expanded range of equipment for the removal of weed vegetation, pruning as well as the use of technologies related to the impact of electric current on vegetation.

1 dwg

Description

The invention relates to high-voltage pulse technology and can be used in agriculture for the destruction of weeds, pinching, and also the implementation of technologies related to the impact of electric current on plant objects.

A known installation for the destruction of weeds using electrical energy "ERPIC", containing a source of electrical energy, including a transformer, control system and electrodes (project "INTELLIGENCE", rubric GRNTI: 68.35, Popov VM, 2000).

The disadvantages of this device are the limited frequency range, low efficiency, large dimensions and weight.

Also known is a duplex electric circulator containing an autonomous power source, a clock generator, a pulse transformer, first and second diodes, first and second electrodes, a frequency divider, a single vibrator and a capacitive voltage multiplier (RU 2380872 C1, 02/10/2010).

The main disadvantage of this device is the use of dimensional protective diodes that can withstand high reverse voltages and high short-circuit currents.

The closest analogue (prototype) of the present invention is a duplex electrical stimulator-destructor of biological objects containing a power source, a clock generator, a pulse transformer, conductivity analyzer, the first, second and third electronic switches, controlled capacitive storage and electrodes (RU 2388212 C1, 05/10/2010 )

The disadvantages of this device include the use of two separate sources of electrical exposure: inductive and capacitive.

An object of the invention is to provide a duplex electric shock exciter, containing one inductive source of electrical impact, having high efficiency and a wide range of use.

This technical problem is achieved by the fact that a current commutator and a pilot winding are introduced directly into the pulse duplex transformer, which contains a power source, a clock generator, a pulse transformer, a capacitive storage device, a conductivity analyzer, three electronic switches and electrodes, forming this is a new additional connection.

Figure 1 presents a functional diagram of a duplex electric shock shock exciter.

The device contains a power supply 1, the first output connected to the input of the first electronic switch 2, a clock generator 5, the output connected to the control inputs of the first 2 and third 7 electronic switches, a capacitive drive 3, the first output connected to the output of the first 2 and the input of the second 6 electronic switches pulse transformer 8, the first output of the primary winding 9 connected to the output of the second electronic switch 6, the active electrode 13 connected to the first output of the secondary winding 11 of the pulse an informator 8, a conductivity analyzer 12, an input connected to the second terminal of the secondary winding 11 of the pulse transformer 8, connected to an earthed electrode 14, and a control output connected to the control input of the second electronic switch 6, and a current regulator 4 connected to power supply 1, the output is connected to the input of the third key 7, the output of which is connected to the first output of the pilot winding 10 of the pulse transformer 8, and the second conclusions of the power source 1, capacitive storage 3, primary th 9 and pilot 10 windings of a pulse transformer 8 are connected to a common wire.

Device Description

The duplex electric shock exciter consists of a power source 1, a clock generator 5, three electronic switches 2, 6, 7, a capacitive storage 3, a current regulator 4, a pulse transformer 8 containing a primary 9, a pilot 10 and a secondary 11 winding, a conductivity analyzer 12, active 13 and grounded 14 electrodes.

Generator 5 generates a sequence of clock pulses that control the operation of the circuit. The first output of the power source 1 (a) is connected to the input of the first electronic switch 2 and the input of the current regulator 4. The output of the clock generator 5 (c) is connected to the control inputs of the first 2 and third 7 electronic switches. The first output of the capacitive storage 3 (b) is connected to the output of the first 2 and the input of the second 6 electronic switches. The first terminal of the primary winding 9 of the pulse transformer 8 is connected to the output of the second electronic switch 6. The active electrode 13 is connected to the first terminal of the secondary winding 11 of the pulse transformer 8, while its second terminal is connected to the grounded electrode 14 through a conductivity analyzer 12, the control output of which (d ) is connected to the control input of the second electronic switch 6. The output of the current setter 4 is connected to the input of the third key 7, the output of the pulse transformer connected to the first output of the pilot winding 10 ora 8. The second conclusions of the power source 1, capacitive storage 3, primary 9 and pilot 10 windings of the pulse transformer 8 are connected to a common wire. The impact on the plant object (not shown in FIG. 1) is carried out using electrodes 13, 14.

In the initial half-cycle of the clock generator 5, a high level signal is generated at its output (c), which switches the switches 2, 7 to the open state. The pilot winding 10 of the transformer 8 is connected to a power source 1 through a series-connected open switch 7 and a current master 4, as a result of which electric energy is accumulated in it, limited by the settings of the master 4. At the same time, capacitive storage 3 (b) is charged through an open switch 2 to the voltage of the power source 1 (a). The voltage at the secondary winding 11 is low, since the switch 6 is in a closed state and the current does not flow through the primary winding 9, and the EMF at the terminals of the pilot winding 10 is limited by the current adjuster 4, and at the end of the first half-cycle, the voltage of the pilot winding 10 drops to zero. Thus, at the initial moment of time, the electrical signal formed between the electrodes 13 and 14 does not affect the plant object.

At the beginning of the second half-cycle, zero potential is generated at the output of the generator 5 (c), the switches 2 and 7 are closed, the capacitive storage 3 (b) is disconnected from the power supply 1 (a), the current in the pilot winding 10 of the transformer 8 begins to decrease rapidly. As a result of this, a self-induction EMF appears in the secondary winding 11, the voltage at the electrodes 13, 14 rises sharply, reaching the value at which a breakdown of the weed isolation occurs. At the time of breakdown, a pilot pulse passes through the plant object, forming a conductive channel, while the voltage of the secondary winding 11 decreases sharply, and the current increases. When the current of the conductive channel reaches a certain value, a high level signal arises at the output of the conductivity analyzer 12, which opens the switch 7, connecting the charged capacitive storage 3 to the primary winding 9 of the transformer 8. As a result, a power operational pulse generated by the discharge current of the capacitive storage is superimposed on the conductive channel 3. Thus, a duplex electric current is produced, which destroys the weed plant, providing the desired result.

The operating pulse generation circuit, consisting of two electronic switches 2 and 6, a capacitive storage 3 and a primary winding 9 of a pulse transformer 8, is a modified shock excitation circuit that allows you to accurately meter the energy of the power pulses and at the same time ensure the safety and protection of the power source 1 from short circuit between the electrodes 13, 14. The energy of the operating pulse is determined by the voltage of the source 1 and the actual capacity of the drive 3. The amplitude of the pilot pulse is adjusted by changing the current setpoint 4.

The voltage of the power source 1 can be 12 ... 200 V, while the voltage on the secondary winding of the transformer 3, forming a conductive channel, reaches values of 4 ... 17 kV.

The amplitude values of the maximum current of operating pulses are in the range of 40 ... 150 A.

The duplex signal repetition rate is in the range from 200 Hz to 25 kHz.

Duplex electric shock driver can be used as a means for weed control, pinching, killing or scaring away rodents.

The device has a simple design, has small dimensions and weight, high efficiency and a wide range of uses. It does not violate the ecology of the environment.

Claims (1)

Duplex electric shock exciter, containing a power source, the first output connected to the input of the first electronic switch, a clock generator, the output connected to the control inputs of the first and third electronic switches, capacitive storage, the first output connected to the output of the first and input of the second electronic switches, a pulse transformer, the first output of the primary winding connected to the output of the second electronic switch, an active electrode connected to the first output of the second the pulse coil transformer winding, conductivity analyzer connected to the second terminal of the pulse transformer secondary winding, connected to the grounded electrode by the output, and connected to the control input of the second electronic switch with the control output, characterized in that a pilot winding located directly on the pulse transformer is inserted into it , and a current regulator, connected to the power source by an input, connected to the input of the third key, the output of which is connected from m the output of the pilot winding, and the second conclusions of the power source, capacitive storage, primary and pilot windings of the pulse transformer are connected to a common wire.

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