SU1016849A1 - Device for monitoring pulse parameters of dial - Google Patents

Abstract

1. A DEVICE FOR MONITORING THE PULSE PARAMETERS OF A NUMBER CONSUMER, containing a reference generator, the output of which is connected to the first input of a pulse counter, an input unit, a display unit and an NAND element, the output of which is connected to the second input of a pulse counter, so that in order to improve the accuracy of control, the chatter filling unit has been entered into it. the element is NOT, the first, second, third i and fourth pulse formers of the first and second memory blocks, the output of the input unit connected to the first input of the chatter filling unit, the second input of which is connected to the first output of the pulse counter, and the output to the input of the first imager pulses and through the element NOT with the input of the second pulse driver, the output of which is connected to the input of the third pulse driver and the first input of the first memory block, and the output of the first pulse driver is connected to the input of the fourth form irovatel pulses and to the first input of the second memory unit, the second input of which is connected (A to a second input of the first memory block and the second output of the pulse counter, and the outputs of the third and fourth pulse shapers connected to the inputs of AND-NK cell. OG SR

Description

2, the apparatus according to claim 1, characterized in that the filling unit. bounce contains the first and second AND-NOT elements, the NOT element and the first and second triggers, the first input of the first AND-NOT element being the first input of the bounce filling unit, the output of the first AND-NOT element connected to the first input of the second AND-NOT element, the output of which is the output of block I

they bounce and connected to the input of the element NOT and to the C input of the first trigger; the output of the element is NOT connected to the C input of the second trigger; the S inputs of the first and second trigger are connected to the second input of the bounce filling unit, the output of the first trigger is connected to the second to the input of the second NAND element, and the output of the second trigger to the second, the input of the first NAND element.

one

A device for monitoring the pulse parameters of a dialer relates to a telephone communication technique and can be used to check the pulse parameters of the dialers of telephone sets.

A device for controlling a dialer is known, which contains a bridge circuit, pulse counters and total time, a generator and control and indication circuits, an input of an amplitude selector connected to the input of a telephone set, connecting HeHHOiviy with a bridge circuit and a coincidence circuit, and an output connected to the input of pulse counter 13.

The disadvantage of the device is that, when measuring time parameters, it does not fill the bounce of pulse contacts, which leads to inaccurate measurement of time intervals.

The closest to the proposed technical entity is a device for monitoring pulse parameters of a pivot-abrasive device, containing a reference generator, the output of which is connected to the first input of a pulse counter, an input unit, a display unit and an NAND element whose output is connected to the second input of the pulse counter C2 1 The disadvantage of the device is that it does not accurately measure the opening and closing times of the pulse contacts and the pulse counting, since it does not fill the bounce of the pulse contacts.

The purpose of the invention is to improve the accuracy of control,

This goal is achieved by introducing a filling generator, an input unit, a display unit and an NAND element, the output of which is connected to the second pulse counter input, into the device for monitoring the pulse diameters of the dialer, the reference generator, the output unit of which is connected to the second input of the pulse counter, and a filling unit bounce, NOT element, first, 0 second, third and fourth pulse formers, first and second memory blocks, with the output of the input block connected to the first input of the bounce filling block, the second input 5 of which is connected the first output of the pulse counter, and the input to the first pulse driver and through the element NOT to the second pulse driver, the output of which is connected to the input of the third pulse generator and the first input of the first memory unit, and the output of the first pulse driver is connected to the fourth fourth input of the body pulses and to the first input of the second memory block, the second input of which is connected to the second input of the first memory block and the second output (the house of the pulse counter, and the outputs of the third and fourth drivers) 0 pulses are connected to the inputs of the NAND element.

The bounce filling unit contains the first and second AND-NES elements, the NOT element and the first and second 5 triggers, the first input of the first AND-NOT element being the first input of the bounce filling unit, the output of the first AND-NE element connected to the first input of the second the NAND element, the output of which is the output of the bounce filling unit and connected to the input of the element NOT and to the C input of the first trigger, the output of the element is NOT connected to. The second inlet of the third trigger, the 5 inputs of the first and second triggers are connected to the second input of the chatter filling unit, the output of the first trigger is connected to the second input of the second I-NOT element, and the output of the second trigger is to the second input of the first element And -NOT,

FIG. 1 shows a functional block diagram of the proposed device; in fig. 2 is a block diagram of the chatter filling unit in FIG. 3 - voltage plots arriving at the corresponding units of the device; in fig. 4 - voltage plots at the corresponding points of the chatter filling unit. The device for monitoring the pulse parameters of the dialer contains an input unit 1, a filling unit 2, a NOT 3 element, first, second third and fourth drivers 4, 5, 6 and 7 pulses, an AND-HE element 8, a reference pulse generator 9, a pulse counter 10, the first and second blocks .11 to 12 memories, display unit 13. The bounce filling unit contains the first and second AND-HE elements 14 and 15, the HE element 16, the first and second triggers 17 and 18. The proposed device operates as follows. During the reverse stroke of the dialer disk, continuous opening and closing of the impulse contacts that are connected to the unit occurs. 1 input. Opening - contact closure, which is accompanied by a rattle, input unit 1 converts into logical levels 1 and 0 (.fig. 3 plot 1), where the duration of contact bounce when opening is closed, the contact bounce duration at closing. The pulse sequence of logic levels enters the bounce filling unit 2, which fills the bounce from the beginning of the pulse until the control pulse bounce from the first output of the counter 10 pulses arrives at the second input of the 2 filling block. : The pulse counter 10 gives out a control pulse (Fig. 3, plot 3) after a preselected time interval, the duration of which is t fr. exceeds the maximum bounce time, but does not reach the pulse duration. The pulse sequence from the chatter 2 filling unit 2 (Fig. 3, plot 2) arrives at the input of the first driver 4 pulses. and through the element NOT 3 to the input of the second driver 5 pulses. The leading edge of the first pulse at the moment starts the first shaper of 4 pulses. A short pulse from the first driver 4 pulses is fed to the first input of the second block 12 pag mti, which remembers the previous state of the pulse counter 10, and to the input of the fourth driver 7 pulses (Fig. 3, plot 4). The rear edge of the short pulse starts the fourth driver 7 pulses. Short pulses (Fig. 3, plot 5) from the fourth time 7 pulses through the I-NE element at the second input of the counter 10 pulses (Fig. 3, plot 8) and are not produced. The pulse counter 10 starts counting the time interval of the first pulse and the chatter filling time interval t s (n When a predetermined filling time is reached, the pulse counter 10 outputs a control pulse from the first output, which is fed to the second input of the chatter filling unit 2. At the time t2, the falling edge of the first pulse through the element NO 3 starts the second pulse shaper 5. A short pulse from the second pulse shaper 5 is fed to the first input of the first block 11 memory (Fig. 3, plot 6), which memorizes the duration of the first pulse interval measured by the pulse counter 10 pulses and to the input of the third pulse driver 6 (Fig. Plot plot b). The trailing edge of the short pulse triggers the third pulse former B pulses. Short pulses (Fig. 3, plot 7) from the third pulse generator 6 through the IS-HE element 8 arrive at the second input of the pulse counter 10 (Fig. 3, plot 8) and are quenched. The pulse counter 10 starts counting the time interval of the second pulse 2 and the time of filling the chatter,. When the pre-selected filling time is reached, the pulse counter 10 from the first output produces a control pulse, which is fed to the second input of the bounce filling unit 2. The filling of jc e-free is stopped and at the moment t the leading edge of the third impulse sf (Fig. 3 plot 2) is triggered by the first driver 4 of the impulses. A short pulse from the first driver 4 pulses into the first input of the second memory block 12 (FIG. 3, plot 4), which records the duration of the second pulse tj-t-j measured by the pulse counter 10 pulses. The display unit 13 simultaneously indicates in the memory units 11 and 12 memory fixed time intervals. The following process is repeated. The chatter filling unit operates in the following manner. At the first input of the first element I-EE 14, a pulse sequence of logic levels 1 and O (Fig. 4, plot 1) arrives, where the time intervals and, 3 o (M correspond to the duration of dredging without opening and closing the contacts, respectively. t (Fig. 4), which corresponds to the opening of the contacts, at the first input of the first logic circuit IS-NOT 14, the logical O changes to logical 1. Since the second input of the element 14 receives the logical 1 from the output of the second trigger 18 (Fig. 4, plot then at the output of element 14, logical 1 is changed to O (FIG. 4, plot Also from 1 to O, the level at the first input of the second element AND-NOT 15 changes. Since the second input of the element AND-NOT 15 receives 1 from the output of the first trigger 17, then at the output of the element AND-NOT 15, which is and the output of the bounce filling unit, the logical O varies ria 1 (Fig. 4, plot 4). C O changes by 1 and the level at the C input of the first flip-flop 17. As a result, the flip-flop 17 switches and is O (phi: g. 4, plot 6). This level arrives and is maintained for a specific time interval.

Zop the second input of the second element IS-NOT 15. Therefore, regardless of the level change at the first input (Fig. 4, plot 4) of the second element IS-NO 15, the logical, i.e. bounce occurs when the contacts open. After temporarily. first interval t ,,, which is known to be longer than the bounce time, to the second input of the bounce filling unit, and to the inputs of the flip-flops 17 and 18, a control pulse arrives (Fig. 4, plot 2). The first trigger 17 returns to its original state and the chattering stops when the contacts open, at time t /, which corresponds to the closure of the contacts, to the first input of the first AND 14 element, level 1 changes to O, (Fig. 4, plot one). Consequently, from logical O to 1 the level at the output of the AND-NOT element changes

14 and at the first input of the second element AND-NO 15 (FIG. 4, plot 4). Therefore, from 1 to O, the level on the AND-NE 15 element changes, i.e. and at the output of the chatter filling unit (Fig. 4, plot 3). Since the output of the AND-15 element is connected to the input of the HE 16 element, then at the C input of the second trigger 18, the logical O changes to 1 (Fig. 4, plot 5), as a result, the trigger 18 switches to

its output instead

appears

O (Fig. 4, plot 7). This logical level arrives and is maintained for a certain time interval t, and to the second input of the first element NAND 14. Consequently, regardless of the level change at the first input (Fig. 4, plot 1) of the first element 14, at the output element 14, the level does not change (Fig, 4, plot 4). The level at the output of element 15, i.e. at the output of the chatter filling unit, the chattering of the contacts closes. After the time interval of filling, which is obviously greater than the duration of the bounce to the second input of the filling block, i.e. At the inputs of the triggers 17 and 18, a control pulse is applied (Fig. 4, plot 2). The second trigger 18 returns to its original state, and the freezing is stopped when the contacts are closed.

Further, the above described process is repeated i.

Thus, the device for monitoring the pulse parameters of the dialer improves the measurement accuracy of the opening time and the closing time due to the fact that the bounce time is included in the total pulse time.

Claims (2)

1. DEVICE FOR MONITORING PULSE PARAMETERS OF THE NUMBER OF THE ARRANGER, comprising a reference generator, the output of which is connected to the first input of the pulse counter, an input unit, an indication unit and an NAND element, the output of which is connected to the second input of the pulse counter, which is connected with that that, in order to improve the control accuracy, a chatter filling unit, an element NOT, first, second, third ί and fourth pulse shapers the first and second memory blocks are introduced into it, and the output of the input unit is connected to the first input of the chatter filling unit, the second input of which is connected to the first output of the pulse counter, and the output to the input of the first pulse shaper and through the element NOT to the input of the second pulse shaper, the output of which is connected to the input of the third pulse shaper and the first input of the first memory block, and the output of the first pulse shaper is connected to the input of the fourth pulse shaper, and to the first input of the second memory block, the second input of which is connected to the second input of the first memory block and the second output of the pulse counter, and the output of the third and h Fourth pulse shapers connected to the inputs of the element AND NOT. (Bn. 1 2. The device according to π. 1, characterized in that the bounce block contains the first and second AND-NOT elements, the NOT element and the first and second triggers, the first input of the first AND-NOT element being the first input of the bounce block, the output of the first AND-NOT connected to the first the input of the second AND-NOT element, the output of which is the output of the chatter filling unit and is connected to the input of the NOT element and to the C-input of the first trigger, the output of the element is NOT connected to the C-input of the second trigger, while the S-inputs of the first and second triggers are connected with second block input fill the chatter, the output of the first trigger is connected to the second input of the second AND-NOT element, and the output of the second trigger is connected to the second. the input of the first element AND NOT.