SU1564493A2 - Indicator of condition of parameters being checked - Google Patents

Abstract

The invention relates to mining automation, in particular, to devices that monitor the placement of the car park at the loading point of the mine. The invention makes it possible to extend the functionality by allowing the scaled parameters to be displayed. Triggers 12 and 16 are entered into the indicator, scale switch 17 and control circuit 15, generator 11 and cycles 13 and 14. The counting inputs of the triggers are connected to the output of the pulse generator, and the setup inputs to the second outputs of the reset circuits. Clock counters are connected to triggers via scale switches. Information about the number of trolleys comes from directional counting sensors through resolution circuits 1 and 2 to the counting inputs of the reversing counter 3. 2 Il.

Description

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The invention relates to automation and can be used to control the alignment of the car fleet at the stationary loading point of the mine.

The purpose of the invention is to enhance the functionality by allowing the scaled parameter to be scaled.

FIG. 1 shows a block diagram of the proposed indicator; in fig. 2 - timing diagrams for devices that work on the operation.

The indicator contains code sensors consisting of schemes 1 and 2 of the resolution of the counting direction and reversible counters 3, the last counting inputs of Addition and Subtraction are connected respectively to the outputs of the schemes 1 and 2 of the resolution of the counting direction, direct code outputs maximum errors, inverse code outputs — with minimum error accumulation limiting circuits 5 and information inputs of a counter 6 clock pulses, a clock pulse generator 7, the output of which is connected to the distribution input 8 pulses, reset circuit 9, the inputs of which are connected to the outputs of the counters 6 clocks, and the first outputs - to the inputs of the prerecording of the same counters, the gas discharge on the metering tube 10, zero and switch

cathodes which are connected to the output

The distributor has 8 pulses, as well as an 11-cycle generator, the output of which is connected to the I-inputs of the second flip-flops 12, the first AND 13 circuit, whose inputs are connected to the inverse outputs of the second flip-flops 12, and the output - with the “Distributor stop” 8 pulses, the second circuits 14, the first inputs of which are connected to the generator outputs 7 clock pulses and the counting inputs of the second flip-flops 12, and the second inputs to the direct outputs of the same flip-flops 12 and the inputs of the control circuits 15, the outputs of which, in turn, are connected to the anodes -indika The first tube 10, the first flip-flops 16, the counting inputs of which are connected to the outputs of the second AND circuit and the scale switch 17, through which the counting inputs of the counters 7 clock pulses are connected to the outputs of the first trigger 16 or the output of the second circuit AND 16 and the second 12 flip-flops are connected to the second input of the reset circuit 9.

The indicator works as follows.

Information on the number of trolleys arriving or departing from the site is received from directional counting sensors through schemes 1 and 2 of the resolution of the counting direction (which is a coincidence circuit) to the counting inputs (Addition and Subtraction) of reversible counters 3. In

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the formation accumulated in the counters 3, in the inverse code goes to the inputs of the preliminary recording of counters of 6 clock pulses. The pulses from the generator 7 clock pulses are fed to the input of the distributor 8 pulses and through the second circuit And 14 and the switches 17 of the scale directly or through the counting first triggers 16 are fed to the counting inputs of the counters 6 clock pulses. At the same time, depending on the position of the scale switches 17, the filling of the counter 6 clock pulses occurs either synchronously with the switching of the cathodes (movement of the light spot) in the metering tube 10, or twice as slow, i.e. each additional unit in the counter 6 clock pulses corresponds to the movement of the discharge into two cathodes of the metering tube 10. This is achieved by dividing the frequency of the pulses of the generator 7 clock pulses using the first triggers 16. When the counters are 6 clock pulses per The skew pulses appear on their outputs, which through the reset circuits 9 produce pre-recording outputs and overwrite the inverse code counter 6 into the information accumulated in the reversible counters 3. At the same time, the first and the second additional triggers 16 and 12. The second triggers 12 are introduced to form at the inputs of the control circuits 14 high unit level signals that coincide in duration with the filling time of the counters 6 clock pulses owls The establishment of the second triggers 12 in a single state at the output occurs when the pulses from the generator 6 clocks at the counting input and the generator from the generator 11 cycles at the 1st input coincide in time. The oscillator And cycles (representing a schematic misaligned multivibrator) forms a pulse sequence with a follow-up period (where n is the number of cathodes of the counting tube 10, a t is the follow-up period of the generator 7 clock pulses). The high (single) level at the direct outputs of the second triggers 12 permits the passage of clock pulses through the second circuits AND 14 to the counting inputs of the counters 6 clocks, and also ensures that the control circuits 15 are turned on. The latter are high-voltage switches (in particular, transistor), which ensure the connection of the corresponding anodes (first and second scales) of the metering tube 10 to the power source with sufficient voltage for burning discharges. The supply of high voltage to the anode of the corresponding scale of the metering tube 10 coincides with the appearance of a single level signal at the output of the control circuit 15 and ceases when the second trigger 12 is reset to the zero state on the forward output. After a high voltage is removed from the battery, the discharge movement on the corresponding scale stops when the cathodes of the metering tube 10 are switched (discharge goes off). The first circuit AND 13 provides the formation of a stop signal for the distributor 8 pulses, according to which the latter performs a reset to the zero cathode of the meter tube 10 only after filling both counters with 6 clock pulses.

With a cyclic (with a generator frequency T, 11 cycles} recording resettable numbers, the counters of 6 clock pulses are counted in a variable modulus. The bits on the corresponding scales of the metering tube 10 are displaced by the same (or doubled, depending on the position switches 17 scales) the number of cathodes. Repetition of cycles with high frequency (not lower than 16 Hz, i.e. T-1/16 s) forms, on a gas discharge countershifter tube 10, outlet profiles, the length of which shows the relative occupancy control part of the scales are coarse 10 (beyond the maximal value of the parameters) is covered, and the open displayed parts correspond to the lengths of the branches being monitored. Due to the possibility of indicating the parameter in a restricted area, the indication increases, so that the occupancy of the branches can be easily estimated as the minimum number of trolleys per branch (the light profiles have a small length), and the maximum branch filling, when the light profiles occupy the entire open part of the scales of the metering indicator ubki 10.

Number of trolleys displayed on

The scales of the calculator tube 10 cannot be larger than the maximum number of trolleys accommodating on the controlled transport lines x. This is provided by the maximum error accumulation schemes 4, which limit the counting of the reversible counters 3 in addition and prevent accumulation of errors with a positive error of the sensors. The limitation is accomplished by setting the codes at the outputs of the restriction circuit 4 (multi-input circuits I)

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They are supplied with the corresponding bits of the forward code outputs of reversible counters 3. Moreover, the weights of the codes are equal to the number of trolleys located on the controlled transport branches x. When the unit level signals are received from all the connected code outputs of the reversible counters 3, the signals "Forbid to the bills" that arrive at the corresponding counting resolution resolution circuits 1 are generated at the outputs of the limiting circuit 4.

Circuits 5 limiting the accumulation of errors at a minimum are designed to stop the reversible counters 3 when subtracting them at 0, thereby limiting the accumulation of errors with a negative error of the sensors.

The reversible counter 3 is stopped by signals arriving at the inputs of the counting direction resolution circuit 2, from the outputs of the restriction circuit 5 when all of the units (high, unit level) are at their inputs connected to the inverse code outputs of the reversible counter 3.

Claims (1)

Invention Formula Indicator of the state of the monitored parameters by author. St. No. 659903, characterized in that, in order to expand the functionality by providing the possibility of scaling the displayed parameter, the cycle generator and the first AND circuit are entered into it, as well as the first and second triggers, the second AND circuit, the switch scale and control circuit, with the installation inputs of the first and second triggers connected to the second output of the reset circuit, the clock pulse generator is connected to the anodes of the gas discharge metering tube through pos Consistently connected to the first trigger and control circuit, the I-inputs of the first trigger of each control unit are connected to the output of the cycle generator, the direct output of the first trigger is connected via the second And element to the scale switch and the counting input of the second trigger, the output of which is connected to the second input of the scale switch, the second input of the second element I is connected to the clock pulse generator; the inverse inputs of the second flip-flops of each control unit are connected to the input "Pulse distributor stop through the first it I.