SU805497A1 - Device for testing telemetering summation meter - Google Patents

Description

one

The invention relates to a pulse engineering technique and can be used in devices for processing tele metric information.

It is known a device containing triggers, a pulse shaper, a selector, and a differentiation element of NKHTfc l.

The drawback of the device is the heterogeneity of the elements used, which reduces the reliability of the device.

The closest to the proposed technical solution is a device containing sequentially counting decades with ten outputs each and a multi-input element AND, in which each decade has a switch. There are ten positions, the movable contact of which is connected to the corresponding input of the element And, and the stationary - with the outputs of this decade, the switch of each decade, except the last, has an additional contact group, the movable contact of which is connected to the input of the next decade, and the fixed contacts - with the outputs of the decade switched by this switch, and the moving contact is shifted one step in relation to the main contact group in the direction of increasing the output number f2.

The disadvantage of this device is the high laboriousness of information processing (registration, processing of the result, comparison of output and accumulated pulses, evaluation of the result).

The purpose of the invention is the expansion of the functional capabilities of the device, consisting in the automation of control and data transfer.

Delivered is achieved by the fact that the device, containing a generator, a binary counter, the first indicator and a decoder and the first element, and the first input of which is connected to the output of the decoder, the inputs of which are connected to the input and outputs of the first indicator and binary counter, respectively, are entered into the second decoder and indicator, register, elements AND, OR, FO1 routers, triggers and result indicator, whose input is co5 with the first output of the OR element and the output of the first And element, the first input of which is connected to the P input iggera start, the second - a second decoder output, the inputs of which

0 connected to the inputs of the second indicator and the outputs of the register, V- and C-inputs of which are connected to the outputs of the second and third elements, respectively, and its D-inputs, 5-input of the trigger trigger, I.-inputs of the binary counter and other triggers are connected, with the reset bus, the start bus is connected to the R-input of the start trigger and S inlet of the start trigger, the output of the fourth element I is connected to the output bus and the 5-input of the binary counter, and the outputs to the generator output and the other output of the trigger trigger, inverse output which is connected to one inlet The fifth AND element, the other inputs of which are connected to the output of the start counting driver and the inverse output of 1 on and off triggers, and the output to the second input of the OR element, the S input of the off trigger connected to the output of the control trigger and the first inputs of the second, third, and the sixth elements I, whose inputs are connected respectively to the direct outputs of the formers of the counting and clock pulses and inverse 4 the formation of the beginning of the counting, the inputs of which are connected to the input bus of the device, the S inputs of control triggers and connected to the outputs iyustogo of AND and OR element. . in fig. Figure 1 shows the block diagram of the proposed device in FIG. 2-7 of the voltage plots of the main functional units of the device, explaining the principle of its operation.

The proposed control device consists of the following main functionally interconnected circuits (Fig. 1) 4 circuits forming a given number of pulses for the summing counter and the pulse detection circuit of the summing counter.

The chain of formation of a given number of pulses contains the generator 1, the element And 2, the output bus 3, the binary counter 4, the decoder 5, the indicator 6, the trigger start 7, the reset bus 8 and the start 9, the element 10. The decoder is designed to form a control command when issuing given number of pulses into a totalizer. - The indicator 6 indicates the status of the trigger 4 of the trigger (the number of implants accumulated in the counter). The decoder5 is connected to the input R of the trigger 7, in addition, the input R from the trigger 7 is connected to the reset bus 3, and the input S of the trigger 7 is connected to the trigger 9. The direct output of the trigger 7 is connected to the circuit 2 and inverse to the circuit And 10.

The trigger 7 is designed to control the circuit AND 2, passing to

the input of the summing counter is the specified number of pulses, and the AND 10 circuit, which determines the beginning and end of the operation of the pulse detection circuit, P (counter 6).

The registration circuit of the pulse of the totalizer contains the following drivers: counting start 11, counting pulses 12, clock pulses 13, input bus 14, register 15, decoder J indicator 17, triggers: - turning off 18 of control 19, turning off 20, OR 21 element, And 22 elements -25, output indicator 26.

The driver 11 is configured for the amplitude of the marker pulses of the output sequence of the summing counter and is intended to form the start and end of the pulse counting by the register 15 connected to the decoder 16 and the indicator 17. Element I 10 is intended to transmit the pulses of the former 11 through the control OR 21 to start the control trigger 19 at input 9, if there is a resolution at the inverse outputs of the triggers 7, 18 and 20.

Element OR 21 is designed to transmit to trigger the input b of the trigger 19 pulses from either element 10 or from 24.

The trigger 18 is designed to prohibit the passage of pulses through the element 10 to the start command on bus 9 and is connected on output S to bus 8 and on input R to the terminal 9. Control trigger 19 is designed to cut off the passage of pulses from the driver 12 adjusted for amplitude unit impulses of a summing counter, through element I 22 at output V of register 15 and from a driver 13 tuned to the amplitude of zero pulses of the summed counter and through element And 23 at input C of register 15, as well as pulses from the inverse output of generator 11 through element 25. The inputs of the flip-flops 19 and 20 are connected to the bus 8. The output of the flip-flop 19 is also connected to the input 5 of the flip-flop 20, which is designed to prohibit the pulse generator 11 through the element 10 when there is a signal from the element 24 or after one the period of reading information from the summing up counter.

Register 15 is designed to accumulate single pulses of a totalizer in the time interval defined by bhema OR 21.

The decoder 16 is triggered by the accumulation of a given number of pulses in the register. The indicator 17 serves to display the number of pulses accumulated in the register 15 and to indicate the status of the triggers of the register 15.

Element And 24 is designed to form a signal (in the presence of control signals from decoders 5 and 16) to turn on the indicator 26, indicating the normal operation of the summing counter, and to flip triggers 19 and 20. Element and 25 is intended to tilt triggers 19 and 20 on the front the front of the imaging unit 11 when / it is triggered by a marker pulse corresponding to the end of one period of following the output pulses of the summing counter. The proposed device works in the following way. The decoders 5 and 16 are set to the required number of pulses. Power is supplied to the device. Next 8 Reset, a command sets the trigger 7, 18, 19, and 20, the counter 4, and the register 15 through the outputs 1 to the initial state. Power is supplied to a telemetry totalizer (not shown in Fig. 1), which is reset. In the initial state, generator 1 generates a frequency, however, it does not go to output 3, so k4 element AND 2 is closed by start trigger 7. Element 10 is disabled by trigger including 18, 22 and 23 and is forbidden by control trigger 19. The switch 9 tilts the trigger 7 at input 5, allowing the generator 1 to pass through the element 2. The trigger 18 switches over at the input R. The element 10 opens at the inverse of the trigger 18, but is prohibited at the inverse output of the trigger 7. The state of the other elements we are not varies. The pulses of the generator 1 from the output of the element 2 come through the bus 3 to the input of the telemet | and a summing counter and at the input of counter 4, fill them in. When the number of pulses in the counter 4 is reached, it corresponds to the setting of the decoder 5, the latter is triggered, causing the trigger trigger 7 to roll over and input 6 and the resolution to the And 10 element at the corresponding input. Trigger 7 prohibits, on the forward output, the passage of the pulses of generator 1 through element I 2, and through element 10 on three inputs, triggers 7, 18, and 20. When a sequence of output pulses appears, a telemetric summing counter (see Fig. 2- 1) the next marker pulse shaper 11 tuned to AND (.p (fig. Tilts, forming a pulse (fig. 3), passing through the elements AND 10, OR OR. The falling edge of the pulse at the output of the element OR 21 causes the control trigger to overturn 19. The trigger remains as it was. the trigger 19 goes to the decision elements And 22 and 23, forming pulses, corresponding to single values of the output information of the summing counter (Fig.4) and clock frequency (Fig.5. In addition, the trigger 1.9 permits the passage of pulses through the element And 25. The clock frequency from the output of the element And 23 is fed to the input of the register 15, from the output of the element And 22 single impulses are fed to the input V of the register 15, fill it. If during the period between two marker pulses in register 15, the number of single pulses is reached, corresponding to the value set in decoder 16, the latter is triggered and gives permission to AND 24 element. The output signal from AND 24 indicator indicates the normal operation of the totalizer in indicator -26 and A negative front through the element OR 21 causes the triggers 19, and then 20 to overturn (the negative front of the trigger 19). The trigger 19 prohibits the passage of pulses through the elements And 22 and 23, and the trigger 20 through the element 10 (Fig.6, 7). In this case, indicator 6 indicates the number of pulses issued to the summing counter, and the number of pulses accumulated in the summing counter and outputted by it to the recorder is indicated on the indicator 17 (in this case, the control unit is not shown. The coincidence of the indicator indications 26 confirms the correctness of the indicator information 26 ( normal operation of the summing counter.) If during the period between two pulses of the marker the decoder 16 does not work, then the register 15 is filled before the appearance of the second marker pulse, I add a counter on the bus 14. This triggers the forming; the wired 11. The impulse formed by the negative front) from the output of the element I 25 causes the triggers 19 and 20 to overturn, which prohibit the passage of pulses from the formers 11, 12 and 13 through the elements K 10, 22 and 23. At the same time, indicator 26 does not work and does not provide information about the normal operation of the summing counter, and the difference in the indications of the number of pulses of indicators 6 and 17 shows the difference in the number of pulses entered into the summing counter and registered by the counter (reg istrator). The counter check is done in the same order. Thus, automatic monitoring of the functioning of telemetric totalizers is implemented. As a result of using the proposed device, there is no need to use such expensive

state-of-the-art equipment, like a loop oscilloscope (telesystem), etc. When evaluating the results of checks, manual processing of information is excluded, which leads to a decrease in measurement error.

Claims (2)

Invention Formula A monitoring device for telemetric totalizers containing a generator, a binary counter, a nep indicator and a decoder, the first element And, the first input of which is connected to the output of the decoder, the inputs of which are connected to the inputs and outputs of the first indicator and binary counter, respectively, characterized in that the purpose of expanding the functionality, concluded in the automation of control and data management, introduced a second decoder and indicator, register, elements AND, OR, operators, trigger and indicator reza The input is connected to the first output of the OR element and the output of the first element I, the first input of which is connected to the R input of the start trigger, and the second to the output of the second decoder, the inputs of which are connected to the inputs of the second indicator and the register outputs, V - and C the inputs of which are connected to the outputs of the second and third elements, respectively, and D-inputs, S-input of the trigger trigger, C-inputs of the binary counter and other triggers are connected to the reset bus, the start bus is connected to the R-input of the trigger trigger and 5-input of the trigger trigger, the output of the fourth element I is connected to the output bus and the -input the binary counter, and the outputs with the generator output and the direct trigger trigger output, the inverse output of which is connected to one input of the fifth And element, the other inputs of which are connected to the output of the start of counting generator and the inverse outputs of the on and off triggers, and The OR input of the OR element, S is the tripping trigger input connected to the control trigger output and the first inputs of the second, third, and sixth elements AND the second inputs of which are connected respectively to the direct outputs of the counting and clock drivers and the inverse output of the counting start, whose inputs are connected with the input bus of the device 5, the inputs of the control trigger are connected to the outputs of the sixth AND element and the OR element. Sources of information taken into account in examination I 1. USSR Copyright Certificate 363215, cl. H 03 K 21/34, 1971. 2. USSR author's certificate No. 265946, cl. H 03 K 21/36, 1968. Inpois ,. Marker ffj -shsshshl Faye. S FIG. 7 fug. 2 one