SU1260848A1 - Device for ultrasonic inspection - Google Patents

Abstract

The invention relates to the field of ultrasound testing of materials and can be used in installations for the automatic ultrasound quality of products. The aim of the invention is to increase the reliability and performance of the control due to the automatic control of the control program depending on the change in the speed of control and the quality of the acoustic contact. An ultrasonic control device comprising a synchronizer, a first and a second coincidence stage, a first and a second trigger, a calculation unit, an OR circuit, a pulse counter, an execution unit and an automatic defect signaling device, allow for the introduction of a speed sensor, an acoustic contact meter, a bus driver, the code converter and the storage unit automatically select any combination of pulses from the n possible echoes in the packet in accordance with a given program. 1 il. (L

Description

The invention relates to the ultrasonic testing of materials without their destruction and can be used in the development of installations for the automatic ultrasonic testing of products.

The aim of the invention is to increase the reliability and performance of the control due to the automatic extraction of any combination of K pulses from n possible echoes in the burst when the control speed and the quality of the acoustic contact changes.

The drawing shows a block diagram of the device.

The device for ultrasonic control contains a serially connected synchronizer 1, the first cascade 2 matches and the first trigger 3, the output connected to the second

the input of the first cascade of 2 matches, connected in series by the second

trigger 4, second stage 5 matches, second input connected to synchronizer 1, calculation unit 6, second input connected to output of first stage 2 matches, OR circuit 7, pulse counter 8, second input connected to output of first stage 2 matches and execution unit 9 , and automatic signaling device 10 defects, the input connected to the synchronizer 1, and the output - to the first input of the second trigger 4 and the third inputs: the computing unit 6 and the counter 8 pulses, and the output of the circuit 7 OR is connected to the second inputs of the first 3 and second 4 tr of the generators and the fourth input of the computing unit 6, and the output of the pulse counter 8 is connected to the second input of the circuit 7 OR, a speed sensor 11 connected in series with an acoustic contact meter 12, a bus driver 13, a second input connected to the speed sensor 11 output, a 14 code converter and a storage unit 15, the first and second outputs connected to the information inputs of the computing unit 6 and the counter 8 of pulses.

The device works as follows.

A set of values of the maximum possible number n of the expected periodic impulses from the defect is determined, which is determined by the length of the defect, the frequency of the sounding of the probe pulses, the direction diagram

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a converter, etc., and a number of pulses sufficient to register the defect. The values of the numbers n and k correspond to certain values of the control speed and the quality (for example, in percent) of the acoustic contact. The value of m is calculated equal to the difference between the values of ri and k. From the speed sensor 11 and the acoustic contact quality meter 12, data on speed and bush contact come to the input of the bus driver 13, from the tire driver 13 5 to the input of the code converter 14, are converted to the corresponding numeric code and sent to the address input of the storage unit 15. The numbers The k and w are pre-recorded in the memory cells of the storage unit 15 whose addresses are the corresponding values of the speed and quality of the acoustic contact. Thus, each specific value of the control speed and the quality of the acoustic contact corresponds to certain values of the numbers k and m, recorded in the memory cell of the storage unit 15. The values of the numbers k and ni from the storage unit 15 are fed to the information inputs of the calculation unit 6 and the pulse counter 8 .

Synchronization pulses from synchronizer 1 are received at one of the inputs of the first cascade 2 matches, the second input of which receives pulses from the output of the first trigger 3, when these pulses coincide in time at the output of the first cascade 2 matches, a pulse appears that goes to the preliminary recording inputs block 6 calculations and the counter 8 pulses from the defect, resulting in the recording of numbers installed on the information inputs of block 6 calculations and counter 8 pulses from the defect.

The impulses from the defect from the output of the automatic alarm device 10 defects, which are fed to the countdown input of the counter 8 pulses from the defect, are subtracted from the number K set at the information input of the counter 8 pulses from the defect.

When a k-ro pulse arrives from a defect, the 8-pulse counter from the defect produces a pulse that signals the presence of a defect, which is 0

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steps to the input of the threadblock unit 9 and to the input of the circuit 7 OR.

The first impulse from the defect from the automatic signaling device 10 defects knocks over the second trigger 4, the impulse from the output of which opens the second stage 5 of coincidence,

From the output of the second stage 5 of coincidence, the synchronization pulses go to the countdown input of the computing unit 6 and are subtracted from the number t set at the information input of the computing unit 6, and the pulses from the defect from the output of the automatic alarm 10 defects arriving at the input of the direct counting unit 6 calculations are added to the number m.

If there are m gaps in the pulse sequence from the defect, a pulse is formed at the output of the computing unit 6, which is fed to the second input of the OR circuit 7

From the output of circuit 7 OR, a pulse corresponding in time or a pulse from the output of block 6 of calculations, or a pulse from the output of counter 8 pulses from a defect, goes to the second inputs of the first 3 and second 4 triggers and to the inputs of the installation to zero of block 6 of calculations and counter 8 impulses from the defect and sets them to their original state.

The use of a speed sensor, an acoustic contact meter, a bus driver, a code converter and a storage unit allows the control program to be automatically controlled depending on changes in the control speed and the quality of the acoustic contact by automatically selecting any combination of k pulses from n possible

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echoes in a pack in accordance with a given program.

Claims (1)

Formula invented shadows Ultrasonic control device containing synchronizer connected in series, first coincidence stage and first trigger, output connected to second input of first coincidence stage, second trigger connected in series, second coincidence stage, second input connected to synchronizer, computing unit, second input connected to output of first cascade of matches, OR circuit, pulse counter, the second input connected to the output of the first cascade of matches, and the execution unit, and automatic defect indicator, the input connected to the synchronizer, and the output to the first input of the second trigger and the third inputs of the computing unit and the pulse counter, and the output of the OR circuit is connected to the second inputs of the first and second triggers and the fourth input of the computing unit, and the output. The pulse counter is connected to the second input of the OR circuit, characterized in that, in order to increase the reliability and performance of the control, it is equipped with a speed sensor and connected in series with an acoustic contact meter, a bus driver, a second input connected to the output of the speed sensor, a code converter and a storage unit, the first and second outputs are connected to the information inputs of the computing unit and the pulse counter. Editor L.Povkhan Compiled by L.Ivanov-Shits Tehred L. Serdyukova Proofreader E. Sirohman Order 5223/44 Circulation 778 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow,, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Subscription