SU1412455A1 - Device for checking multicore cable - Google Patents

Description

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who have zhi, py, svp :, with. gtatla i. connecting part 23, Assume that with the ligip 1 of the mounting part 25 of the unit 25, the collar E1 of the core 1 and the connecting part 22, 23 and G1 of the connecting part 2 (see FIG. 1)

In the transmitters 1.1-1 (), the test signal, the diodes 10L, 10, k, pass, respectively, to the second input of the voltage transducer 3 The voltage transducer 3 separates the constant component U ,, from. test signal (see, fig. 2a) which supplies these transmitters with power via the second output, and with the first output produces pulses from the 1st through

.k-th test signal received at the inputs of the counter 4 and the imaging unit 5 pulse. At the output of counter 4, a binary code of the pulse number appears in each of the involved transmitters, and in each code of the pulse former 5, a pulse is generated for each test pulse, the duration of which depends on the transmitter number and is set using switch 20, this pulse is . switchboard switches

During this impulse, a de-number code of the impulse number code and the opening of keys B.1--8, k occur in the operating transmitters. .

In this case, the public key number is equal to the number of the test impulse received by the transmitter. When the institute enters, the transmitters of the i-th pulse, the key 8 is opened at the transmitter K1 and the time tj at the transmitter 1.2, Bo of all other transmitters, the keys 8 will be powered, since -1 25 connected conductors i only connected parts 22, 23. Operated keys 8,1 will be connected to the gigathin unit

.11 receiver 2 resistors 9 across the circuit; plus power supply unit 11 nepnbtfi output shaper 12 test signal

The first pin of the terminal element 13, the chopper 18, the conductor i of the connecting part 25, the conductor i of the connecting parts 22, 23, the public keys Bei in the transmitters 1.1, resistors 9, the known conductor 19.

, Pr. and this current in the bank as well. then, through the sensing element 13, the time t ,, will increase to a value determined by the connection of two

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pet iurropOB 9 and i. VGMn) pglmchi- -. HF, i, defined by lu-lu lyu- nium of one resistor 9 "At the second output of the sensitive element 13, a corresponding voltage appears (see Fig. 26) i

The impulse fore imprinter forts negative signals of the signals and pulses sent to it in accordance with FIG. 2c and feeds them to the third input of the control unit 16. At the same time, the delay of signal propagation jt in the line can be neglected, i.e. think that

- .. t, -) - 4t хЦ (2) - t + and t- tj, (3) since you can always choose the signal parameters t and t. Of course, a lot more than dt "

The leading edge of the pulse T-j (see Fig. 2d) arriving at the second input of the control unit 16 converts the latter into a display,

PervPH same impulse arriving at the first input, translates the control unit 16 into the measurement mode, in which the block 16 counts the pulses coming from the generator 15. When arriving at the first input of the unit 16, the number of pulses

TO

T as well

(ABOUT

where TU is the period of the pulses of the measuring generator 15, which is selected on the basis of the required measurement accuracy, the control unit 16 switches to adadani, in Ro the torus waits for the next pulse at the first input.

At the same time, the control unit 16 counts the number of the current measurement cycle. If, in the measurement mode, pulses arrive at the first input of the control unit 16 (this occurs in the interval i - (i + 1), then the control unit transmits the number of the current measurement cycle and the number of generator pulses 15 accumulated at that moment into the display unit.

The number of the current measurement cycle is equal to the number of the pulse in the test signal (see, fig. 2a, c), which means that the number of the conductor currently connected through a resistor 9 to the common conductor.

Number of oscillator pulses of generator 15 is equal to (or proportional to) the duration of the strobe signal

five . 14 la (see fng. 26, c), and natit, the number of the adjoining parts.

Thus, the display unit and the Uijpyer display is the full number of the link (the number of the core and the number of the connecting part), similar to the one touched by the needle.

Dn of the considered case, during the measurement of the measurement, the control unit receives two pulses and the numbers of the connecting parts 22 and .3 will not be transmitted to the living room a.

Similarly to the described, the device will display a display in the measurement cycle of the core number of the connecting part 2. The control unit 16 returns to the initial state on the falling edge T (see Fig. 2a, d).

Then the cycle of inlikashsh repeats.

When a monitored core closes, a short circuit current flows through the HONfy sensor element 13 to the common core (housing), and a signal appears at the second output of the pulse generator 14, This signal will go to the control unit 16, and a short signal will be output to the display unit cani

Thus, by calculating and displaying the number of the core and the number of the connecting part in the receiver, the scheme of the transmitters, and hence the complexity of the entire device, is simplified, as the number of transmitters increases with the growth of the connecting parts.

Claims (1)

Invention Formula A device for testing a stranded cable, a receiver and (n - 1) transmitters, the receiver consists of a generator, a control unit, a display unit, a power supply unit, a loop, the generator output is connected to the first input of the control unit, the output of which is soy with the input of the display unit, the first output of the power supply unit is connected to the common bus five 0 five 2L Q five 0 0 0 five 556 receiver, and each transmitter consists of a switch, switch, counter, resistor, the counter output is connected to the first input of the switch, the common bus of each transmitter is connected to a common receiver bus through a known core of the test object, the receiver is inserted. a test signal shaper, a sensing noise}, the first pulse shaper, the first and second terminals of the power supply connected to the first and second shaper inputs, respectively The first and second outputs of which are connected respectively to the first input of the sensing element and the second input of the control unit, the third and fourth inputs of which are connected respectively to the first and second outputs of the first spool former, the input of which is connected to the first output of the sensitive element, the second output of which connected to probe, and in each of the transmitters, a voltage converter, a second pulse shaper, diodes according to the number of cores of the test object, the first and second inputs of the voltage converter are connected respectively to a common pin and the cathode-Mii of all diodes, the first output voltage converter is connected respectively, with the first inputs of the counter and the second pulse driver, the output of the second pulse driver . connected to the second input of the switch, the third input of which is connected to the second inputs of the counter, the second pulse shaper and the second output of the voltage converter, the fourth input of the switch is connected via a resistor to the common device, the information inputs of the switch are connected to the anode of the corresponding diode, the output of the switch is connected to the third input of the second pulse shaper.