SU1170394A1 - Logging plotter - Google Patents

Abstract

A CARTA GRAPH CONSTRUCTOR contains a recording device with moving the recording point along a line across a moving tape, a signal source, a sawtooth generator, the first and second comparators, the UTI circuit, and the amplifier forming device connected to the recording device. connected to the input of the sawtooth generator, the output of the sawtooth generator is connected to the first inputs of the comparators, the signal source to the second input of the first comparator, characterized in that, in order to increase the reliability of the device and the quality of information display, a memory plotter is inserted into the plotter information signal generator, rewriting pulse shaper, first and second two-input circuits AND, the information signal storage unit being connected between the source output (L signal and the second input of the second comparator, the clock input of the memory unit is connected to the output of the overwriting pulse former, the input of which is connected to the output of the OR circuit, the direct outputs of the first and second comparators are connected respectively to the first and second circuits AND, and the inverse outputs to the second and first circuits, the outputs of which, after 00, the SHS circuit are connected to the fflpovuchte lyu of the overwrite pulses.

Description

The invention relates to systems for visualization of primary or computer-aided information from field geophysical studies of oil and gas wells and can be used as part of logging stations. The purpose of the invention. Improving the reliability of the device and the quality of displaying information. FIG. 1 shows a functional diagram of the logging plotter; in fig. 2-4 - time diagrams. The logging plotter uses the source 1 signaloz, the generator 2 sawtooth, block 3 of the memory with the former 4 rewriting pulses 4, the comparator 5 and 6, the And 7 and 8 circuits, the OR 9, the booster 10 and the registering device 11. The output of signal source 1 is directly connected to the input of the first comparator 5 and through memory block 3 to the input of the second comparator 6, the generator output, 2 sawtooth voltages are connected to the second inputs of the comparators 5 and 6, the direct and inverse outputs of the comparators 5 and 6 connected to the circuit and s 7 and 8, the outputs of which through OR gate 9, and driver amplifier 10 are connected to the recording device 11, and the output of OR gate 9 through the generator 4 is connected to a clock input of the memory unit 3. The recording device 11 is connected to the control input of the generator 2 of the sawtooth voltage. Any system can be used as a recording device: with a cathode ray tube (CRT), with a mechanical scan of a recording point along a line (rotating spiral devices), with a electronic scanning of a recording point along a line (devices with a contact comb. And electronic switching ) other. In the operating mode, simultaneously with scanning the recorder line, the sawtooth voltage generator 2 generates a linearly increasing voltage arriving at the first inputs of the comparators 5 and 6. The second inputs of the comparators 5 and 6 receive a constant signal voltage. At the moment of equality, for example, of the initial voltage with the current voltage of the generator 2, the comparator 5 will operate from the direct and inverse outputs of the comparator and a single and zero voltage will be applied to circuits And 7 and 8. If the unit voltage goes to circuit And 7, then its output will be zero differential, which through the scheme OR 9 and the amplifier-driver 10 will go to the recording device 11 and will begin recording the stroke. If the output voltage of the memory block is different from the original one, then comparator 6 will work after comparator 5, close the AND 7 circuit and, as a result, stop recording the stroke. At the output of the OR 9 circuit, a positive pulse is formed, the duration of which is proportional to the voltage difference in the current and previous cycles. On the trailing edge of the pulse, the shaper 4 will generate a rewrite pulse and write to the memory block 3 the voltage acting in the data recording cycle. The magnitude of this voltage will be maintained until the next cycle. In the time diagrams of FIG. 5-4 show the sawtooth voltage 12 of the generator 2, the input quasi-constant voltage 13 of the signal, the step voltage 14 from the output of the memory block 3, the modulation pulses 15, fed to the recording device 11, the shape of the curve displayed on the recording tape devices 16. The timing diagrams are somewhat exaggerated, the distance between the lines (oblique lines) on a real tape recorder of the order of 0.5 mm and the strokes 16 merge into a solid curvature. As can be seen from the time diagrams, the node 3 of the memory provides accurate memorization of the voltage in a given recording cycle and keeps it until the next one, which ensures the high quality of the recorded information. .

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Claims (1)

A LOGGING DEVELOPER containing a recording device with moving the recording point along a line across a moving belt, a signal source, a sawtooth generator, first and second comparators, an OR circuit and a driver amplifier connected to a recording device connected to the input of a sawtooth generator, wherein the sawtooth voltage generator is connected to the first inputs of the comparators, the signal source to the second input of the first comparator, characterized in that, with In order to improve the reliability of the device and the quality of information display, an information signal memory block, an overwrite pulse generator, the first and second two-input I circuits are introduced into the plotter, and the information signal memory block is connected between the output of the signal source and the second input of the second comparator, the clock input of the memory block is connected to the output of the overwrite pulse generator, the input of which is connected to the output of the OR circuit, the direct outputs of the first and second comparators are connected respectively to the first second and first circuits, and the inverse outputs to the second and first circuits, the outputs of which are connected via an OR circuit to the overwrite pulse generator. SU ... 1170394