SU744319A1 - Automatic defect indicator - Google Patents

Description

(54) AUTOLATIC DEFECT SIGNALIZER

one

The invention relates to the field of non-destructive testing by the ultrasonic method and can be used to control the quality of materials in the mechanical engineering, metallurgical and other industries 5 industries.

A pulse-echo flaw detector is known, containing a strobe pulse generator, a coincidence circuit, a pulse selector, a delay line detector 1. 10

The disadvantage of it is low control accuracy.

The closest in technical essence and attainable (the result is an automatic defect detector containing a synchronizer, a T1 pulse generator, a selector, another / two actuators, two triggers, a coincidence circuit and an actuating unit, whose input is connected to the output of the coincidence circuit 2.20

The disadvantage of it is control accuracy.

The purpose of the present invention is to increase the accuracy of control.

The goal is achieved by the fact that the automatic defect detector 25 is equipped with a linear voltage generator L1, the input of which is connected to the output of the gating pulse generator, l channels, each of which consists of 30

consequently connected trigger, the first key, the input of which is connected to the output of the linear voltage generator, the first detector, the second key, the second detector and comparator, a voltage divider connected between the linear voltage generator and the comparator of each channel connected to the first input of the coincidence circuit, a serially connected differentiating circuit, the input of which is connected to the output of a pulse generator, the first generator of delayed pulses, the input of which is connected to the second input The second detector of each channel and the output to the second inputs of the second key, the second delayed oscillator, the output of which is connected to the second input of the first detector of each Channel, the output of the selector are connected to the second input of the coincidence circuit and through the decoder to the first input of the trigger of each channel, the second the input of which is connected to the output of the synchronizer connected to the input of the generator of gating pulses, and the input of the selector to the output of the generator of gating pulses.

The drawing shows the block diagram of the proposed Sigalization.

It contains a synchronizer /, a generator of 2 gating pulses, a selector 3, a rotary generator 4, a coincidence circuit 5, an execution unit 6, the input of which is connected to the output of a combination circuit, a generator 7 of linear information, the input of which is connected to the output of a strobe generator 1 channel 8, the states of serially connected trnger 9, the first key 10, whose input is connected to the linear generator generator H1, the nerve detector II, the second key 12, the second detector /.J on the roomizer 14. Cana; 1 15 consists of the trigger 16, the nerve key / 7, the input of which is connected to the output of the radiation detector, the first detector / S, the second key / 5, the second detector 20, and the commulator 21.

Between the generator 7 is a bed and 14 and 2 Bq, and the divider 22 is under pressure. In addition, the detector contains the following consecutive connections: a yellow differential switch, manual circuit 23, the input of which is connected to the generator 2 output, the first generator 24 of the delayed nm pulses, the input of which is connected to the second inputs of the second detectors / n 20, and the output to the second inputs of the second keys 12 and 19, n the second generator 25 of the delayed pulses, the output of which is connected to the second input of the first detectors // and 18. The output of the selector 3 is connected to the second input of the coincidence circuit, the first input of which is connected to the outputs of the 14 n 21 transmitters, and through the decoder - to n The first input of the trigger 9 n 16. The second input of the trunk: the iggers 9 II 16 is connected with the output. synchronizer connected to the generator input strobe, nx pulses. The input of the selector 3 is connected to the output of the generator 2.

Automatic eego legalizer defects works as follows.

From the output of the detector flaw detector to the input of the selector 3 signals are received. The pulses from the output of the generator 2, by opening the selector 3, pass on its output only the pulses from the defect and the impulses of the asynchronous nomera that are fed through the decoder 4 to the triggers 9 and 16 and do not require them to return to the current. The start of operation of triggers is set by S1H-1 synchronous pulses coinciding with the probe, creating impulses opening the keys 10 and 17. The generator 2, controlled by the strobing impulse, generates pulses of linearly changing the pulse. These emulsions charge the capacitances of the detectors // and 18. The voltage at the output of the detectors will remain until the switches 12 and 19 are turned on by pulses delayed relative to the pulse wave by the geyrator 24 delayed pulses. When key is turned on, 12 part of the capacitance energy of detectors 11 and 18 will be

The output voltage of the detectors 13 and 20 is fed, and the comparators 14 and 21 N are compared there with a linear change of the geiepator 7. by a split divider 12.

At the output of the comiarators 14 and 21, nm pulses appear, which are fed to the joint scheme 5, to another input of which there are lines and defects. At the output of the scheme of the merger nroydet nmny .ibe from .chefekta.

Thus, if only monitors of a nonsynchronous number were sent to the control zone, they would not cause activation of the unnumbered unit 6. If the pulses from the defect are repeated in two adjacent cells.

perpodah, they will be fixed. The used invention allows new accuracy of the device.

F O. P m u lann 3 obreti nn

The automatic defect detector, which contains a synchronizer, a strobe gay geerator, a selector, a decoder, two triggers, a siiadeni 1 si circuit, and an internal block that is connected to the output of the eiiedeia circuit, differs from the AI, and the ciphers. control, it is equipped with a linear linear generator, the input of which is connected to the output of a strobe emulsion generator, n channels, each of which is connected to each other successively

the trigger of the first key, the input of which is connected to the output of the linear generator, the first detector, the second key, the second detector and the comparator, the voltage divider switched off between the linear voltage generator and each komnarator-1 channel connected to the first INPUT circuit1 soviadeia, and consistently connected differentiating price, the input of which is eater-n-1en with the output

a gating pulse generator, the first generator of delayed pulses, the input of which is connected to the second inputs of the second detector of each drop, and the output to the second inputs of the second key, and

the second geerator of delayed pulses, the output of which is connected to the second input of the nerve detector of each channel, the output of the selector is connected to the second input of the coincidence li through the decoder

to the first input of the trigger of each channel, the second input of which is connected to the output of the sniper, connected to the input of the generator of gating pulses, and the input of the selector to the output of the generator

gating pulses.

Sources of information taken into account in the examination:

1. USSR author's certificate No. 190050, cl. G 01 N 29/04, 1965.

2. USSR author's certificate No. 534686, cl. G 01 N 29/04, 1976 (prototype).

Claims (1)

Claim An automatic defect detector containing a synchronizer, a generator of strobe pulses, a selector, a decoder, two triggers, a coincidence circuit and an executive unit, the input of which is connected to the output of the coincidence circuit, which differs in that, in order to increase the accuracy of control, it is equipped with a linear voltage generator, the input of which is connected to the output of the strobe pulse generator, n channels, each of which consists of 40 triggers of the first key connected in series, the input of which is connected to the generator output line voltage, first detector, second key, second detector and comparator, voltage divider connected between the line voltage generator and the comparator of each channel connected to the first input of the matching circuit, and subsequently connected d a reentry circuit whose input is connected to the output 50 of the strobe generator, the first delayed pulse generator, the input of which is connected to the second inputs of the second detector of each channel, and the output to the second inputs of the second key, and 5 5 to the second delayed pulse generators, the output of which is connected to the second input of the first detector of each channel, the output of the selector is connected to the second input of the matching circuit and through the decoder 50 to the first "trigger input of each channel, the second input of which is connected to the output of the synchronizer connected to the input generator strobe pulses, and the input selector to the output of the generator 65 strobe pulses.