SU735909A1 - Device for measuring the length and determining the position of rolled stock - Google Patents

Description

 4, element 5 I, inverter 6, element 7 I, counter 8 H1 brightened photosensors bV) trigger 9j element 10 OR, delay element 11, basic photo Dvtchik, 12, Register (4 consists of a counter 5 13 pulses and a read block 14. Device works as follows, / ;;,...: -.

Before each photocount of the photodiode of the chunks 1, the control unit 3 generates a signal that sets the counter of 8 unmatched photo sensors to the zero state, trigger 9, and returns 13 to the counter 13 Additional code of the number N where t N is the number of possible non-illuminated photo sensors 1 allowed at work.

devices.;.; ..- .:::,: - :. - :: /; --- v -: .-.

After installation of the device elements into the initial state, the block 3 of the control through the switch 2 generates 20 scanners of the photo sensor 1. At the same time with a small delay, the control block 3 generates signals that arrive at the delay element 11 and the 5 I. When polling any 25 of the illuminated photosensors 1, at the output of switch 2, an impulse appears, which through element 10 OR resets counter 8 to a zero, and through inverter 6 produces a inhibit signal at input 30 of element 5 I.

On the polling cycle by the photo control unit 3, sensors 1 are counter 13 along the circuit, delay element 11, element 7, and sums the number of surveyed photosensors. 35 1 until trigger 9 is set to one. The trigger 9 is set to one state only when the pb circuit of the inverter 6, element 10 I, counter 8 passes successively N + 1 pulses, i.e. when the control unit 3 interrogates N - 1 after, forcibly non-illuminated photo sensors 1, N +1 - and the pulse of the non-illuminated photo sensor sets trigger 9 to one 45 state and generates a inhibitory signal at the input of element 7 And, because the scanning pulses of photo sensors 1 on The code of the meter 13 is received through the delay element 11, the last pulse is 50

four

The dew of the non-illuminated sensor will not arrive at the entrance of the counter 13, since by this time the trigger 9 has switched to one state. Since before the beginning of each survey cycle of the photosensors 1, an additional code of the number N is entered into the counter 13, after the end of the interrogation cycle, the counter 13 will find a number numerically equal to the number of photosensors 1 covered by the product 15

When the rear end of the product 15 of the photosensor 12 crosses, the last vp & turns on the enabling signal, by which the control unit 3 at the end of the polling cycle rewrites the measurement results from the counter 13 to the readout unit 14.

Claims (1)

The invention The device for measuring the length and determining the position of the rolled product, containing photo sensors, a switch, a control unit and a recorder, is designed so that, in order to increase reliability, it is equipped with a delay element, an inverter, an OR element , two elements And, the counter of non-illuminated photosensors and a trigger, the switch output is connected to one of the inputs of the OR element and through the inverter to the first input of the nefvvy element And, the second input of which. through the delay element is connected to the second input of the second element AND and to the BTopbOvi output of the control unit, the third output of which is connected to the zero input of the trigger and the setup input of the recorder and through the OR element to the zero input of the counter of non-illuminated photosensors, the counter of which is connected to the output of the first element And, and you-turn - with a single trigger input, the output of which is connected to the first input of the second element I, and the output of the latter is connected to the counting input of the recorder. Sources of information that are one-time in LI 1, USSR Author's Certificate N9 2046O1, cl. OO In 7 / O4, 1966. 2, USSR Author's Certificate No. 6О3835, cl. C, 01 B 7 / O4, 1974 (prototype).