SU1238130A1 - Telemetry and supervisory indication device - Google Patents

Abstract

The invention relates to the field of telemechanics and, in particular, can be used to monitor and control the drilling process. The purpose of the invention is to increase the reliability of ycTjpoucTBa. AC voltage is supplied through isolation elements and threshold elements to the encoder. This voltage is dependent on the variable resistance of the transducers, which is modulated by a signal from the sensor. The alternating voltage signal will only reach the threshold element if the output of the output of all the corresponding converters is large, i.e. if the combination of sensor signals matches the image j provided by this threshold element. 1 hp f-ly, 3 ill. I (L KS with 00 O9 about

Description

The invention relates to telematics and, in particular, can be used to monitor and control the drilling process.

The purpose of the invention is to increase the reliability of the device.

FIG. 1 shows a functional diagram of the device; Fig. 2 is a plot of the dependence of the in. resistance of the converter, the voltage detector - the resistance of the input voltage at different bias voltages; on fi.g. 3 is a circuit diagram of a voltage-to-resistance converter.

The device contains sensors I ... If, primary measuring transducers 2,. . ., 2 ,, groups of 3 ", ..., 2f voltage converters - resistance source 4 sinusoidal voltage, threshold elements 5, 5 ,. .., 5, encoder 6, modulator 7, and elements 8 of isolation.

The voltage-to-resistance converter contains a bias source 9, a pnp transistor 10, a pnpp transistor 11, variable resistors 12, 13 and 14, diodes 15 and 16.

The device works as follows.

The alternating voltage of the source 4 is supplied through the decoupling elements 8 and the threshold elements 5 to the encoder 6. This voltage depends on the output impedance of the converters 3, which in turn depends on the signals coming from the sensors. This dependence has a bell-shaped form (see Fig. 2). The peak of the bell can be shifted along the abscissa axis c. With the help of resistor 12, the steepness of the bell sides can be separately controlled by resistors 1 and 14. This allows modeling various statistical distributions of sensor signal values, the most typical combinations of which for a given situation form a technological image. The signal from source 4 passes to the threshold element 5 only if the output impedance of all converters 3 |., 3. ... great, t, e, if the combination of sensor signals corresponds to the image selected by this threshold element. The positions of the slider of the resistors 12, 13, and 14 are set during the tuning process to the training of the device when

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choosing different types of operations. The output signal from encoder 6 is converted by modulator 7, the output of which is the output of the device,

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invention formula

Claims (1)

I, a telecontrol device containing sensors, the output of each of which is connected to the input of the corresponding primary measuring converter, the output of which is connected via a modulator to the output of the device, characterized 5 topics -. That, in order to increase the reliability of the device, threshold elements, a coder, a source of sinusoidal voltage, isolation elements and transducer groups are introduced into it. 0 voltage is resistance, and the number of voltage transducers is resistance in each group is equal to the number of sensors, the outputs of each primary measuring transducer are connected to the first inputs of the corresponding voltage transducers - resistance of each group, the output of the sinusoidal voltage source is connected the leading element of the isolation with the output of the first voltage converters is the resistance of the corresponding group, the outputs of each previous voltage converter is the resistance s respective group via the corresponding element ki isolator connected to the output transducer posledzposchego voltage - resistance of the corresponding group, the last output transducers voltage - resistance of each group through the respective decoupling elements are connected and the respective inputs of the threshold elements, the outputs of which are connected to the inputs of the encoder 2, Device pop, 1, characterized in that the voltage-resistance converter contains a bias source, pnp and pnp transistors, the first and second diodes, the first, second and third variable resistors, the first output source bias is connected to the first output of the first variable resistor 5, the second output of which through the second and third variable resistors are connected respectively to the anode (the first and the cathode of the second diode, ka5 0 0 The first and second anode diodes are connected to the bases of pnp and pnp transistors, respectively, whose collectors are combined and are the output of a voltage to resistance converter, the second output of the bias source, pnp emitters - the pnp transistors are connected to the zero potential bus, the third output of the first variable resistor is the input of the voltage to voltage converter. L .one UCM "- 5, / J6 1-on-n | 0WS .J