SU938144A1 - Device for article ultrasonic checking - Google Patents

Description

1N

The invention relates to non-destructive ultrasonic tests and can be used in the engineering and other industries.

A device for ultrasonic inspection of products is known, comprising a defectoscope transducer, a distance sensor, a recorder, and a product rotation mechanism l.

A disadvantage of the known device is the low processing performance, since it is necessary to take into account the linear velocity variation when moving the converter from the center to the periphery.

The device closest to the invention in technical essence and the achieved result is a device for ultrasonic coitro products, comprising a rotation angle sensor, series-connected distance sensor, a multiplication unit.

comparison circuit, storage unit and G2 recorder}.

A disadvantage of the known device is the low accuracy of the determination of the scanning step, which can lead to missing defects, in addition, this parameter (scanning step) is determined in a complicated way. The purpose of the invention is to improve the accuracy (0 control).

The goal is achieved by the fact that the device for ultrasonic monitoring of products is equipped with a filter connected between the angle of rotation sensor and the memory

unit, serially connected dvuhsuper iodine rectifier 1-el, zero body and integrator, the output of which is connected to the second input of the unit

Claims (2)

The multiplication, anti-coincidence circuit, the gateway of which is connected to the second integrator input, and two comparators connected in parallel with a rectifier and anti-fallout circuit, the second input of the first comparator is connected to the first-turn storage unit, and the second input of the second comparator is connected to the filter output. In addition, in order to simplify the measurement of the scanning step, the angle of rotation sensor is made in the form of a sine cosine rotating transformer. FIG. 1 shows a block diagram of the proposed device} in FIG. 2 - temporary epures. A device for ultrasonic quality control of products includes a rotation angle sensor 1, a distance sensor 2 connected in series, a multiplication unit 3, a comparison circuit 4, and a 3-unit unit. 5. Between the angle-of-rotation sensor 1 and memory unit 5, the filter 6 is turned on. The hook device contains serially connected rectifier 7, null organ 8 and integrator 9, the output of which is connected to the second input of multiplication unit 3, anti-coincidence circuit 10, output which is connected to the second input of the integrator 9, and the comparators 11 and 12 connected in parallel between the rectifier 7 and the anti-coincidence circuit 10. The second input of the first comparator 1 is connected to the output of the storage unit 5, and the second input of the second comparator 12 is connected to the output of the filter 6, the recorder 13 is connected to the output of the comparison circuit 4. The rotation angle sensor 1 is made in the form of the sine of the cosine rotating transformer. The device works as follows. The output voltage of the angle sensor 1 is fed to the input of the filter 6. The rectified and filtered voltage 14 (Fig. 2) is fed to the input of the comparator 12 and the input of the junction block 5, where the voltage value 15 is stored. 1I and 12 receive rectified voltage 16 by direct line 7, output voltage 17 of comparator 11 does not change during the scanning step, output voltage 18 of comparator 12 changes proportionally to the change in phase voltage of angle sensor 1, for signal extraction proportional p The phase difference between the two compared voltages 14 and 15, is the anti-coincidence circuit 10. The total duration of the pulses at the output of the anti-coincidence circuit 10 is proportional to the double phase difference L. Ch. The integrator 9 converts the duration of these pulses into amplitude 19, with the integrator turning on each half-period with the output voltage 20 of the zero-body 8. The resulting amplitude is multiplied in a unit by multiplying by transducer distance (by hell, not shown) to the center of rotation. The received signal is then fed to the input of the comparison circuit, where it is compared with the reference voltage 21, which goes to the recorder 13 and the input of the storage unit 5, recording the current value of the voltage 14. In the next half-cycle, the cycle is repeated. The proposed device allows an increase in the control accuracy due to a more accurate measurement of the scanning step. Claim 1. Device for ultrasonic testing of products, comprising a rotation angle sensor, serially connected distance sensor, multiplication unit, comparison circuit and storage unit, recorder, characterized in that, in order to improve the control accuracy, it is equipped with a filter connected between the sensor the rotation angle and the memorized unit, connected in series by a full-wave rectifier, a zero-organ and an integrator, whose velocity is connected to the second input of the multiplication unit, an anti-coincidence circuit, the output of which is connected to the second input of the integrator, and two comparators connected in parallel between w 1 and an anti-coincidence circuit, the second input of the first comparator is connected to the output of the storage unit, and the second input of the second comparator is connected to the output of the filter. 2. The device according to claim 1, characterized in that, in order to simplify the measurement, the angle 5938144 " rotation is made in the form of sine-beds- 1. USSR Certificate of Autonomy of a rotating rotary transformer. No. 480010, cl. G 01 N 29/04, 1973. Information sources, according to application no. 2825830 / 25-28, taken into account during the examination of 5th grade. G 01 N 29/04, 1978 (prototype). 2. ABTopckoe certificate of the USSR / g 13 I P 1