SU754652A1 - Generator apparatus for geoelectrosurvey - Google Patents

Description

The invention relates to a pulse technique, can be used for amplitude-phase measurements in geo (electrical prospecting, for example, in carrying out work, by the method of induced polarization or non-linear induced polarization using alternating electromagnetic fields. In addition, this technical solution can be applied in radio measurements of the parameters of various electrical circuits.

Known generating devices for geoelectromagnetic variable electromagnetic fields [1], containing; The 15 master oscillator, the frequency divider, the main trigger, the inverter, the inverter power supply, and the start-up blocks solve the problem of increasing the stability of the generated current, which can be achieved using the switching element of the transformer. However, the current of the switching transformer in this device is closed through the load, therefore, it is not possible to completely eliminate the influence of reactive elements.

The disadvantages of this device are largely eliminated in another device, selected as a pro2

Totipa of declared renting £ 2]. This device uses the well-known ternary inverters, providing three steady states. Each of the four thyristors of this inverter is equipped with its own auxiliary thyristor (commuting), due to which it is possible to carry out the independent switching on of each thyristor at the given points in time.

This device contains a master oscillator having a quartz frequency stabilization, a preliminary frequency divider, two (or several) intermediate triggers, a main frequency divider, a frequency divider by 5 consisting of three triggers, and a main trigger, as well as a thyristor inverter connected to the power supply , two start-up blocks of the 'thyristorb' inverter and two start blocks of the auxiliary thyristors of the inverter.

This device has two major drawbacks: low reliability and inability to use in different modes of operation (single-frequency and dual-frequency measurements). The low reliability of the work is due to the fact that the final formation of the thyristor trigger pulses is performed in

3

754652

four

trigger power amplifiers

(blocking generators) · .when changes

temperature over wide limits

changes the duration of the thyristor start-up pulses, which leads to.

"malfunction" in the thyristor inverter. In addition, differentiated signals of different frequencies coming from different channels are added to the pulse shaper. These signals are then: amplified by multistage amplifiers, resulting in blocking generators that can be triggered by spurious pulses (corresponding to the second front of differentiated pulses). .

The second drawback of the device is the impossibility of its use in two-15 frequency and single-frequency measurements.

At the same time, these two modes are routinely used in field work, and two different specialized devices are used to ensure them. 20

The purpose of the invention is to improve the reliability of the device and the expansion of its functionality.

To achieve this goal, a device containing 25 serially connected master oscillators, a frequency predivider, two intermediate triggers, a main frequency divider, a frequency divider consisting of three triggers, and a main trigger, as well as a thyristor inverter connected to the unit ³ power, two blocks start working inverter thyristors and the two start block of auxiliary thyristors of the inverter connected to the inverter ^ nabzheno five "auxiliary triggers two lo- cal as elements ⁵³ NOT dvuhvhod vym logical AND-NO element, two logical elements 2I-2or-NO and two "logical elements 2-2-2-2I-4 or NOR sootvetstvenno40 outputs are connected to the inputs of two main units launch thyristors and the two start blocks bicycles. Inverter thyristors, a delay element and a switch of work, consisting of eight boards at two 45 positions, the input of the first element 'NOT connected to the inverting output of the first trigger of the frequency divider, and the output element of the delay element with one of the inputs. The two-input element of the IS-NOT, the second input of which is connected to the non-inverting output of the second trigger of the frequency divider, the output of the element IS-NOT is connected to the input of the second element NOT, the counting inputs of the first and second auxiliary triggers are connected to the inverting output 55 of the third trigger of the divider frequencies, the counting inputs of the third, fourth and fifth auxiliary triggers are connected respectively with the inverting output of the first auxiliary trigger, the output of the second element NOT and the output of the element NAND, the input "set ka “O” of the first auxiliary trigger is connected to the inverting output of the second Intermediate trigger; inputs “set O” of the second, third, fourth and fifth auxiliary triggers are connected to the inverting output of the first intermediate trigger; non-inverting output of the main trigger is connected to the first inputs of each element "AND" of the first element 2И-2ИЛИ-НЕ,. the second inputs of the three elements And the first element 2-2-2-2И-4ИЛИ-Не directly and the second input of the fourth element And through the first contact of the fifth board of the switch of the type of work and the first input of the first element And the second element 2-2-2-2И-4ИЛИ -NOT through the second pin of the sixth kind of switch board. works; the inverting output of the main trigger is connected to the first inputs of each element AND the second element 2I-2ILI-NOT, the second input of the fourth element AND the first element 2-2-2-2I-4ILI-NOT through the second contact of the fifth work switch board, the first inputs the second, third and fourth elements And the second element 2-2-2-2I-4ILI-NOT directly and. the first input of the first element And through the first contact of the sixth board of the switch of the type of work; non-inverting output of the second auxiliary trigger is connected to the first input of the third element AND the first element 2-2-2-2И-4ИЛИ-НЕ and directly to the first input of the fourth element I through the first contact of the fourth card of the type of work switch, with the first input of the second element And the second element 2-2-2-2I-4ILI-NOT directly and the second input of the first element And through the first contact of the seventh switch board of the type of work; the non-inverting output of the third auxiliary trigger is connected to the second input of the first element AND the first element 2I-2ILI-NOT directly and the second input of the second element and through the first contact of the first switch board of the work type to the second input of the first element II of the second element 2I-2ILY- NOT directly. And by the second input of the second element I through the first contact of the second switch board of the kind of work, with the first input of the first element I of the first element 2-2-22-4OR-NOT directly and the first input of the second element I through the Contact of the third switchboard of the type of work, with the first input of the third element AND the second element 2-2-2-2I-4ILI-NOT directly and the first input of the fourth element I through the first contact of the eighth board of the switch of the type of work; the non-inverting output of the fifth auxiliary trigger is connected to the second input of the second element AND the second element 2I-2ILI-NOT through the second contact of the second board, with the second input of the second element AND the first element 2I-2ILI-NOT through the second contact of the first board, with the first input

five

 754652

‘6

the second element And the first element 2-2-2-2И-4ИЛИ-НБ through the second contact of the third board and the first inputs of the fourth element And the second element 2-2-2-2И-4ИЛИ-НЕ through the second contact of the eighth board of the switch of the type 5 bot

The drawing shows a structural diagram of the generator device.

The device consists of master oscillator 1, preliminary frequency divider 2, two intermediate triggers 3 and 4, main frequency divider 5, frequency divider, content. hitting three flip-flops 6-8, main trigger 9, first element NOT 10, delay element 11, two-input element AND-NO 12, second element NOT 13, five auxiliary triggers 14-18, first and second elements 2I-2, OR-NOT 19, 20, first and second elements'2-2-2-2И-4ile-not 20

21 and 22, a switch of the type of work with eight boards 23-30 for two positions, two starting blocks 31 and 32 working inverter thyristors, two starting blocks 33 and 34 auxiliary tyris-25 inverter tori, inverter 35 and power supply 36.

The proposed device operates as follows.

The master oscillator 1 produces 30 highly stable oscillations, the frequency of which is divided by a pre-frequency divider 2. The division factor of divider 2 is chosen so that the oscillation period at the output of the intermediate 35 triggers 3 and 4 exceeds the on-off time of the thyristors used in the inverter 35. The division ratio of the main frequency divider 5 is chosen so that the oscillation frequency at its output is 10 times higher than the operating frequency at which the generator should operate.

Fluctuations from the output of the frequency divider 5 are fed to a frequency divider, consisting of three triggers 6 - 8. K. the inverting output of the trigger 8 is connected to the counting input of the main trigger 9. The signal from the output of the trigger 6 is also fed to the input of the element NOT 10 that inverts this signal, and through the delay element 11 - to one of the inputs of the element AND-NOT 12. The second input of this element the signal from the non-inverting trigger output 7. The output signal of the NAND 12 element is fed to the counting input of the auxiliary trigger 18 and through the second element NOT 13 to the counting input of the trigger 17.

From the output of the trigger 8, the signal is also fed to the counting input of the first auxiliary trigger 24, and the input “set O” of this trigger receives a signal from the inverting output of the intermediate trigger 4. From the trigger output 8, the signal also goes to (ι

(the counting input of the second auxiliary- ^ '

then the trigger 15, and the input "setting

'0 "of this trigger receives a signal with

inverting output of the first intermediate trigger 3.

The signal from the inverting output of the trigger 14 is fed to the counting input of the trigger 16. The inputs “set 0” of the trigger 16-18 receive a signal from the inverting output of the first intermediate trigger 3. The signals from the outputs of the trigger 9,14 - 18 control the operation of the elements 19 - 22. On the two inputs of the first element AND of the first element 2-I-2, OR-NOT 19, signals are received from the non-inverting output of the trigger 9 and the non-inverting output of the trigger 16.

The two inputs of the second element And element 19 receive signals from the non-inverting output of trigger 9 and through the first and second contacts of the first board 23 of the switch type of work-signal from the non-inverting output of trigger 16 or the non-inverting output of trigger 18 (when operating in dual-frequency mode, the first contact closes and when working in single-frequency mode, the second contact). The voltage from the output of the element 19 is supplied to the start block 31 of the main thyristors of the inverter 35.

The two inputs of the first element And the second element 2I-2ILI-NOT 20 signals from the inverting output of the trigger 9 and the non-inverting output of the trigger 16.

The two inputs of the second element AND element 20 receive signals from the inverting output of the trigger 9 and through the first and second pins of the second board 24 of the switch of the type of work — a signal from the non-inverting output of the trigger 16 and the non-inverting output of the trigger 18. To the two inputs of the first element And the first element 2-2-2-2И-4ИЛИ-НЕ 21 signals from the non-inverting output of the trigger 16 and non-inverting output of the trigger 9 are received. Signals from the non-inverting output of the trigger 9 and through contacts 1 and 2 of the third board 2 are sent to the two inputs of the second element AND element 21. 5 work type switches are signals from a non-inverting output of trigger 16 and a non-inverting output of trigger 18. Two inputs of the third element AND element 21 receive signals from a non-inverting output of trigger 9 and a non-inverting output of trigger 15. To two inputs of the fourth element And element 21 through a terminal. cycles 1 and 2 of the fourth board 26 and contacts 1 and 2 of the fifth board 27 of the switch of the type of operation signals are received from the non-inverting output of the trigger 15, the non-inverting output of the trigger 17, the non-inverting output of the trigger 9 and the inverting output of the trigger 9, respectively.

Ί

'754652

eight

. The two inputs of the first element AND the second element 2-2-3-2И-4ИЛИ-НЕ 22 through contacts 1 and 2 of the sixth board 28 and contact 1 and 2 of the seventh card 29 of the type of work switch also receive signals from the inverting and non-inverting the outputs of the trigger 9, the non-inverting output of the trigger 15 and the non-inverting output of the trigger 17. The two inputs of the second element And circuit 22 receive signals from the de-inverting output of the trigger 15 and the inverting output of trigger 9. The two inputs of the third element And element 22 receive signals from the non-inverting output three Gera 16 and inverted. _ of the trigger trigger output 9. Two inputs - * ^ and the fourth element AND element 22 receive signals from the inverting output of the trigger 9 and through the contacts 1 and 2 of the eighth board 30 of the switch of work type - signals from the non-inverting 20 output of the trigger 16 and the non-inverting output trigger 18.

The voltage from the output of the element 20 is supplied to the startup unit 32 of the main thyristors of the inverter 35. The voltage from the 25 outputs of the element 21 is supplied to the startup unit 33 of the auxiliary thyristors of the inverter 35. The voltage from the output of the element 22 goes to the startup unit 34 of the auxiliary thyristors of the inverter 30.

Claims (1)

Claim 35 Generating device for geoelectromagnetic, containing serially connected z.adagushchy generator, pre-frequency divider, two intermediate trigger, main frequency divider, frequency divider, consisting of three triggers and main trigger, as well as a thyristor inverter connected to the power unit, two blocks of working thyristors an inverter and two start-up auxiliary thyristors of the inverter connected to an inverter, characterized in that, in order to increase the reliability of the device and expand functional capabilities, it is equipped with five auxiliary triggers, two logical elements NOT, two-input logic element AND-NOT, two logic elements 2I-2, OR, NOT and two 55 logic elements 2-2-2-2I-4, OR-NOT, the outputs of which are connected respectively to the inputs of the two starting blocks of the main thyristors and the two starting blocks of the auxiliary thyristors of the inverter, the delay element and the type of work switch consisting of eight boards and two positions, and the input of the first element is NOT connected to the inverting m output of the first trigger of the frequency divider, and the output through the delay element with one of the inputs of the two-input element AND-NOT, the second input of which is connected to the non-inverting output of the second ^ trigger of the frequency divider, the output of the element AND-NOT connected to the input of the second element NO, counting inputs The first and second auxiliary triggers are connected to the inverting output of the third trigger of the frequency divider, the counting inputs of the third, fourth and fifth auxiliary triggers are connected respectively to the inverting output of the first auxiliary of the secondary trigger, the output of the second element NOT and the output of the logical element AND-NOT, the input “set 0” of the first auxiliary trigger is connected to the inverting output of the second intermediate trigger, the inputs “set 0” of the second, third, fourth and fifth auxiliary triggers are connected. with an inverting output of the first intermediate trigger; non-inverting output of the main trigger is connected to the first inputs of each element AND the first logic element 2I-2ILI-NOT, the second inputs of the three elements AND the first logic element 2-2-2-2I-4ILI-NOT directly and the second input of the fourth element AND through the first contact of the fifth the switch boards of the type of work and the first input of the first element AND the second logic element 2-2-2-2И-4ИЛИ-НЕ through the second contact of the sixth switch board of the type of work inverting the output of the main trigger is connected to the first inputs of each element And W of the logical element 2I-2ILI-NOT, the second input of the fourth element AND the first logic element 2-2-2-2И-4ИЛИ-НЕ through the second contact of the fifth switch board of the type of work, the first inputs of the second, third and fourth elements AND the second logical element 2-2-2-2I-4ILI-NOT directly and with the first input of the first logical element I - through the first contact of the sixth board of the work type switch; non-inverting output of the second auxiliary trigger is connected to the first input of the third element AND the first logic element 2-2-2-2И-4ИЛИ-НЕ and directly to the first input of the fourth element I - through the first contact of the fourth switch of the type of work, with the first 'input ι of the second the element AND the second logic element 2-2-2-2И-4ИЛИ-NOT directly and the second input of the first element AND through the first contact of the seventh switch board of the type of work; non-inverting output of the third auxiliary trigger connected to the second input of the first element AND the first logic element 2I-2, OR-NOT directly 754652 ten by the first input of the first switch of the type of work, with the second input of the first element AND of the second logic element 2И-2ИЛИ-НЕ directly and the second input of the second element И - ч-5 cut the first contact of the second switch of the type of work, with the first input of the first element AND the first logic element 2-2-2-2I-4ILI-NOT directly and the first input of the second element I - through the contact of the third switch board of the type of work, with the first input of the third element And the second logic element 2-2-2 -2I-4ILI- NOT directly with the first input of the fourth element I - through the first contact of the first / second switch of the type of work; the non-inverting output of the fifth auxiliary trigger is connected to the second input of the second element AND the second logic element 2I-2ILI-NOT through the second contact of the second board, with the second input of the second element AND the first logic element 2I-2ILI-NOT through the second contact of the first board, s' the first input of the second element AND the first logic element 2-2-2-2I-4ILI-NOT through the second contact of the third board and the first input of the fourth element AND the second logic element 2-2-2-2I-4ORI-NOT through the second contact of the eighth board switch kind of work.