SU1406625A1 - System for remote monitoring of drilling work - Google Patents

Abstract

The invention relates to telemechanika and is intended to collect information from dispersed objects. The purpose of the invention is to improve noise immunity and simplify the system. The system at the receiving point contains the second generator 1, frequency divider 2, encoder 3, second key 4, first generator 5, transmitter 6, receiver 7, first keys 8 (-8., Blocks 9, -9n, playback, and frequency converter 10 voltage. The monitored item contains a generator, a frequency divider, a coder, an NAND element, a key, a voltage to frequency converter, an information source, a transmitter, a receiver, a filter and a pulse selector. The system allows polling of the monitored items. from generator 5 everything is accepted monitored items, however, only one of them that is tuned to the frequency of the information signal currently being transmitted reacts to it, from the source of information enters the voltage-to-frequency converter and then to the transmitter simultaneously with the arrival of each new signal from the generator 5 of the encoder 3 to a new state, the frequency of the transmitted signal is changed and the corresponding block 9 of reproducing the information coming from this controlled point is connected. 1 hp f-ly, 3 ill. (C sl

Description

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The invention relates to telemechanics and is intended to collect information from dispersed objects.

The purpose of the invention is to improve noise immunity and simplify the system.

FIG. I and 2 shows the functional diagrams of the receiving and controlled items, respectively; in fig. 3 shows an example implementation of a frequency to voltage converter.

The receiving point (Fig. 1) contains a second generator 1, a frequency divider 2, an encoder 3, a second key 4, a first generator 5 (call generator), a transmitter 6, a receiver 7, the first keys 8, playback blocks 9 and 10 in frequency conversion living

The controlled item (Fig. 2) contains a generator 11, a frequency divider 12, an encoder 13, an AND-14 element, a key 15, a voltage-to-frequency converter 16, an information source 17, a transmitter 18, a receiver 19, a filter 20 and a pulse selector 21 .

Converter 10 (FIG. 3) comprises an accumulating capacitor 22, an inductance 23, and a rectifying element 24.

The system works as follows. The clock frequency from the oscillator 1 is fed to frequency divider 2, where time intervals are generated by the first pulse from frequency divider 2. The zero output of the encoder includes key 4, which includes the generator 5 of the call and the transmitter 6 of the radio station. The signal from the call generator 5 is received by all receivers 19 controlled points and passes through a filter 20 tuned to the frequency of the call generator 5. To eliminate the false triggering of the monitored item, a selective turn-on signal is generated in the selector 21, which enables the frequency divider 12 to operate. Encoder 3 and all coders of the 13 monitored points go to the next state. The information is transmitted by the controlled point, the number of which is assigned to the given output of the encoder 13. Information from the information source 17 is transmitted to the converter 16, to the AND-HE element 14 and to the transmitter 18 of the radio station. The radio station is switched on by the mode switch, the information is received by the receiver 7 of the receiving point and fed to the conversion unit 10 and through the key elements 8i-Bp per block and 9, -9p information reproduction. The permissive signal for recording information comes from encoder 3 through key elements 8 to the corresponding playback unit - recording information. For synchronous operation, the frequencies of the generators 1 and 11 are the same. At the end of the last polled point polling, the encoder 3 goes to the zero state (i.e., the enable signal (appears at the zero output of the encoder), the call signal is generated again from generator 5, and the polling cycle of the monitored points starts again. poll provides reliable temporary

coincidence of the work of receiving and controlled items. The transmission of information from the controlled point is in the form of a variable from a tone frequency in the range of 600–3000 Hz. Fed to the input transform. the frequency of the body in the voltage of the controlled object in the range of 600-3000 Hz is converted into a constant voltage of 0.2 to 2.5 V. The noise immunity and linearity of the characteristic is provided by the design features of the circuit,

5 which uses an inductor with a tap in the p-th circuit.

The proposed telecontrol drilling system, in contrast to the known one, makes it possible to control, with the least cost, the technological mode of drilling of mobile drilling units that are in conditions of rugged relief, is simple in design.

Claims (2)

1. System for telecontrol drilling, containing at a controlled point receiver, the output of which is connected to the filter input, information source, transmitter and generator, at the receiving point of the system The theme contains the receiver, the first generator, the output of which is connected to the first input of the transmitter, the second generator, the first keys, the outputs of which are connected to the inputs of the respective playback units, the outputs of which are system outputs that are different in order to improve noise immunity and simplify the system , the frequency divider, the coder, the key, the voltage converter into the frequency, the pulse selector and the NAND element, the filter output through the selector and pulses are connected to the first input tel frequency, the second input of which is connected to the generator output, the output of the frequency divider through an encoder coupled to the first input of AND-NO element and through a switch coupled to the first inputs receiving the nickname and the transmitter, the information source via a converter voltage output to the code connected with the second input element 0 NAND, whose output is connected to the second input of the transmitter, at the receiving point a frequency divider, an encoder, a frequency converter to voltage and a second key are entered, the receiver output is connected to the first inputs of the first keys through the frequency converter, the output of the second generator through the frequency divider connected to the input of the encoder, the first outputs of which are connected to the second inputs of the corresponding 5 the first output of the encoder is connected to the input of the key, the first output of which is connected to the first input of the transmitter, the second output of the switch is connected to the second input of the transmitter via the first generator. 2. The system of claim 1, wherein that the frequency converter to voltage contains an inductor, the extreme and middle terminals of which are combined and connected to the same capacitor plate and one output of a rectifier element, for example a diode, the second terminal of which is the output of a converter, the second capacitor plate is the input of a converter, tire. 22 5X. / FIG. 2 L 24 25 but Out and