SU629806A1 - Ultrasonic echo-pulse thickness gauge - Google Patents

Description

The invention relates to a non-destructive testing of an ultrasonic method and can be used in engineering and metallurgy.

A ultrasonic thickness gauge is known, comprising a synchronizer, a transmitting / receiving unit, a time relay, a counter, a frequency divider, AND circuits, decoders with indicators, a stabilizer, and an autonomous power source.

The disadvantages of it are low energy savings of the power source.

The closest in technical essence and the achieved result to the invention is an ultrasonic echo. A Mpulse thickness gauge, containing a series-connected synchronizer, a receiving-transmitting unit, an AND matching stage and a pulse counter, a reset pulse shaper connected between the syn-synchronizer output and the second counter input, a digital indicator and a counting pulse generator, the output of which is connected to the second input of the coincidence stage I

The disadvantage of it is a large power consumption from an autonomous power source.

For with ;; -., For the power consumption, the proposed thickness gauge is equipped with a recording pulse generator, the input of which is connected to the output, and an receiving and transmitting unit, parallel to the register, the first input of which is connected to the output of the recording pulse generator, the second input to the output of the counter and the output to the indicator input, and the power supply wiring circuit 5, the first output of which is connected to the output of the write pulse shaper, the second input - with the output of the reset pulse shaper, and the output - with the inputs of the counting pulse generator and a.

Fig, given a block diagram of the proposed thickness gauge; Fig. 2 shows temporary diagrams explaining the operation of the circuit.

Ultrasonic echo pulse number contains serially connected synchronizer 1, receiving and transmitting unit 2, cascade 3 matches AND and pulse counter 4, shaper 5 reset pulses connected between the synchronizer output and the second counter input, digital indicator 6, writing pulse shaper 7, the input of which is connected with the output of the receiving and transmitting unit, parallel register 8, the first input of which is connected to the output of the write pulse shaper, the second input to the output of the counter, and the output to the indicator input, Hem 9. power connections, first input

which is connected to the FORWORD of the write pulse generator, the second input with the output of the imaging unit 5, and the output with the counter and generator inputs 10 5 counting pulses, the output of which is connected to the input of the cascade 3.

The device works as follows.

The synchronizer 1 starts the shaper 5 W-1 reset pulses and the receiving-transmitting unit 2. At the output of the receiving-transmitting unit, a pulse 11 is produced (see Fig. 2). whose duration is proportional to the thickness of the product being measured. The pulses 12 from the output of the imaging unit 5 reset the counter 4 and turn on the power supply circuit 9.

The circuit 9 supplies the power 13 to the counter 4 and the generator 10 counting pulses, as a result of which the generator begins to generate the counting pulses 14, which are fed to one of the inputs of the cascade 3 matches AND "

A pulse 11 is fed to the second input of the cascade from the receiving-transmitting unit,

At the output of the coincidence stage, a burst of pulses 15 is generated.

I-lMnynbCbi from the output of the cascade of matches is fed to counter 4,

The falling edge of the receiving-transmitting unit 16 starts the write pulse shaper 7, which controls the rewriting of the number dialed B by the counter 4 into the parallel register 8,

The back edge of the pulse 16 of the imaging unit 7 is the switching off of the circuit 9, the power supply is removed from the generator 10 counting pulses and the counter 4

Indication of production indications with the help of digital indicator 6 „

The described invention allows to reduce the energy consumption, to overstate the time during which the device is powered by auto memory; can work without changing the power source.

Claims (1)

ULTRASONIC ECHO-PULSE THICKNESS THERMOMETER, containing a synchronized synchronizer, a receiving-transmitting unit, a coincidence stage AND, and a pulse counter, a reset pulse generator connected between the synchronizer output and the second counter input, a digital indicator and counter pulse generator, the output of which is connected to the second input coincidence stage And, characterized in that, in order to reduce power consumption, it is equipped with a pulse shaper, recording, the input of which is connected to the output of the transmitting and receiving unit in parallel register, the first input of which is connected to the output of the pulse shaper, recording, the second input - to the output of the counter, and the output to the input of the indicator, and the power supply circuit, the first input of which is connected to the output of the pulse shaper recording, the second input - with the output of the shaper reset pulses, and the output with the inputs of the generator of counting pulses and a counter. © N3 © 00 About ©