SU1619000A1 - Device for measuring hole depth by cable with applied correction markings - Google Patents

Abstract

The invention relates to geophysical surveys. The purpose of the invention is to increase reliability by eliminating the loss of information upon the arrival of double and triple cable marks. The sensor 1 of depth quantization pulses through the node 2 for determining the direction of the cable movement controls the operation of the counter 3. Sensor 4 correction magnetic marks using the correction register 5 every ten meters of length the cables are triggered by means of two identical circuits trigger 6 - circuit AND 8 (trigger 7 - diagram 9) installation of the third, fourth, fifth and sixth decades of counter 3 in a position multiple of the nearest ten-meter length value, and the first, second decade - in the zero position. The device functions normally with the arrival of double and triple corrective labels. 1 il. i

Description

The invention relates to the field of geophysical research.

The purpose of the invention is to increase reliability by eliminating the loss of information upon the arrival of double and triple cable tags.

The drawing shows the functional diagram of the device.

The device contains a sensor 1 of depth quantization pulses connected by the inputs of the node 2 of determining the direction of movement of the cable connected by its outputs respectively to the inputs of counter 3. The inputs of the first and second decades of counter 3 are connected to the sensor 4 correction marks which are also connected to the signal input of the correction 5 . The output of the latter is connected to the second inputs of the flip-flops 6 and 7. The outputs of the second decade of the counter 3 are connected to the inputs of the flip-flops 6 and 7, circuits 8 and 9. The outputs of the flip-flops 6 and 7 are connected to the inputs of the corresponding circuits AND 8 and 9, which are connected to the inputs of the third decade counter 3. The third, fourth and fifth decades of the counter 3 are connected to the corresponding installation inputs of the correction register 5.

The device works as follows.

When the cable is moving, the sensor 1 of the quantization pulses in depth associated with the measuring roller generates a sequence of pulses, following each centimeter of the length of the cable, through two channels. These two pulse sequences are offset one relative to the other by 1/4 of the pulse following period. Depending on the direction of motion, node 2 of motion detection of the cable transmits quantization pulses through one of its two output channels. Counter 3, either summed up or subtracted, outputs at the output a code of the measured length of a moving cable (with a resolution of 1 cm). In connection with the possibility of cable slipping over the surface of the measuring roller, the length value measured by the sensor 1 of depth quantization pulses may differ from the actual one. This difference over a length of 10 m can reach ± (10 -50) cm. Measurement accuracy is enhanced by introducing a correction of measurement results with the help of magnetic branches applied to the cable surfaces every 10 meters. For the convenience of processing information, each tenth tag is made double, and each cell is triple.

Taking into account the possible errors of the sensor 1 quantization pulses in depth, a correction mark may occur when the third decade of the counter is found

3 (decade meters) in a state corresponding to a length of 9 or 10 m. If the third decade is in state 9, then the output of this decade allows correction register 5 to skip the correction label to the corresponding inputs of flip-flops 6 and 7. Each circuit is trigger b and circuit 8, and also trigger 7 and circuit 9 corrective

0 tags on one of the inputs of the third decade of the counter. This label translates the third decade of state 9 into state 10, i.e., sets the output of this decade to O with the transfer of information to the next time the 5th row of counter 3 (decade D4), while the correction label sets the third, fourth, fifth and the sixth decade of the counter in the nearest state, a multiple of 10 m. The same label directly from the sensor output

0 4 correction marks sets the first and second decades of counter 3 to the initial (zero) state. Thus, when counter 3 is not obtained, up to the next 10 m correction, forcibly do5 drives the counter to these 10 m by setting the third decade to the desired state while simultaneously resetting the first and second decades in O. When peg is collected by the counter, 3 consecutive Hume corrections do not affect the third

0 decade (the 10 m counter has already been counted), and the first and second decade return to zero position (eliminating the extra units and tens of centimeters measured above the actual

5 lengths).

When hundreds of meters are corrected when a double tag arrives, the correction register reacts to the third and fourth decades in the state 9,

0, a correction label is output at the same time, and the label in the chains is a trigger 6 circuit AND 8 (or trigger 7 a circuit AND 9) is converted into a single correction signal at the input of the third decade.

5 Similarly, upon the arrival of the triple tag, the input of the correction register 5 is affected by three decades of the counter 3 — a third, a fourth, and a fifth, which are in state 9 at the same time.

0 During the operation of the proposed device, the arrival of double and triple tags does not violate the normal depth measurement, and in the case of work on a cable incorrectly marked with correction marks

Claims (1)

5 is not knocked down due to the arrival of corrective labels at the wrong time. Apparatus of the Invention A device for measuring the depth of a well by a cable with correction marks affixed thereon, comprising 5 16190006 the counter, the correction register, the pulse-connected sensor, respectively, with the first quantization in the depth of quantization, the node defined by the triggers and the second inputs of the And, neither the direction of movement of the cable, the sensor outputs of which are connected to two input-correcting labels and the serial and third decade of the counter, two outputs Right from the fact that, in order to increase the reliability — they are connected to two inputs of its sixth denomination, it is equipped with a series of connectors, the output of the sensor of corrective labels the second trigger and the second circuit are connected to the third inputs of the first and second, the quantization pulse sensor over the depth of the decade of the counter and with the first input of the two-way outputs through the definition unit by-10 correction country, the second, third and fourth The movement of the cable is connected to the two inputs of which are connected respectively m inputs of the first decade of the counter, third outputs of the third, fourth and the outputs of which are connected to two entrances of that decade of the counter, and the output to the second the second decade of the counter, which has two outputs by the trigger inputs.