SU901966A1

SU901966A1 - Ultrasonic pulse distance meter

Info

Publication number: SU901966A1
Application number: SU802872079A
Authority: SU
Inventors: Вениамин Иванович Бодрягин; Николай Александрович Иванов; Вячеслав Михайлович МОСКВИЧ
Original assignee: Экспедиционный Отряд Подводно-Технических Работ Главтранснефти
Priority date: 1980-01-21
Filing date: 1980-01-21
Publication date: 1982-01-30

Description

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Изобретенне относитс к ультразвуковой измерительной технике и может быть ис оль- зоватьс дл акустического измерени рассто ний в водной среде.The invention relates to an ultrasonic measuring technique and can be used for acoustic measurement of distances in an aqueous medium.

Известен ультразвуковой импульсный измеритель рассто ний, содержащий последовательно соединенные генератор запускающих импульсов , акустический преобразователь и усилитель , а также блок индикации 1.A known ultrasonic pulse distance meter containing a series-connected trigger pulse generator, an acoustic transducer and an amplifier, as well as a display unit 1.

Однако известное устройство обладает низкой точностью измерени рассто ний.However, the known device has a low accuracy of distance measurement.

Цель изобретени - повышение точности измерени рассто ний.The purpose of the invention is to improve the accuracy of distance measurement.

Дл достнжени указанной цели в ультразвуковой импульсный измеритель рассто ний, содержащий последовательно соединенные генератор запускающих импульсов, акустический преобразователь и усилитель, а также блок индикации, введены первый коммутатор, первый н второй триггеры, последовательно соединенные генератор опорной частоты, второй коммутатор, первый счетчик, первый блок пам ти, элемент совпадени , второй счетчнк, второй блок пам ти и дешифратор,To achieve this goal, the first switch, the first and second triggers, the serially connected reference frequency generator, the second switch, the first counter, and the first switch are inserted into the ultrasonic pulse distance meter, which contains series-connected trigger pulse generator, acoustic transducer and amplifier, as well as a display unit. a memory block, a match element, a second counter, a second memory block, and a decoder,

а также отражатель, причем первый и второй входы первого коммутатора соединены соответственно с выходом усилител и вторым выходом генератора запускающих импульсов, а первый и второй выходы первого коммутатора соединены с первыми входами соответственно первого и второго триггеров, третий выход генератора запускающих импульсов соединен со вторыми входами первого н второго триггеров, вторыми входами пер10 вого н второго счетчиков н блоков пам ти, выход первого триггера соединен с третьим входом первого блока пам ти, выход второго триггера соединен со вторым входом второго коммутатора и третьим входом втоIS рого блока пам ти, выход первого счетчика соединен со вторьпи входом элемента совпадени , выход элемента совпадени соединен с третьим входом первого счетчика, выход дещнфратора соединен со входом блока ин20 дикации.as well as a reflector, the first and second inputs of the first switch are connected respectively to the output of the amplifier and the second output of the trigger pulse generator, and the first and second outputs of the first switch are connected to the first inputs of the first and second triggers respectively, the third output of the trigger pulse generator is connected to the second inputs of the first n the second trigger, the second inputs of the first n of the second counter n memory blocks, the output of the first trigger connected to the third input of the first memory block, the output of the second ggera connected to the second input of the second switch and the third input block vtoIS cerned memory of the first counter output is connected to the input of the coincidence element vtorpi, coincidence output element connected to the third input of the first counter deschnfratora output coupled to an input of the in20 dikatsii.

Claims

The drawing shows a structural diagram of the proposed device. An ultrasonic pulsed distance meter consists of a trigger pulse generator 1, an acoustic transducer 2, a reflector 3, an amplifier 4, a display unit 5, the first memory block 6, the first switch 7, the decoder 8, the first trigger 9, the second trigger 10, the second the AND memory unit, the second switch 12, the reference frequency generator 13, the second counter 14, the first counter 15, the matching element 16. The device works as follows. Trigger generator J 1, triggers 9 and 10 are set to one, and counters 14 and 15 and memory blocks 6 and 11 are in zero state. The trigger 10 through the second switch 12 connects the input of the first counter 15 to the output of the generator 13 of the reference frequency. Generator 1 pulses excite an acoustic transducer

2. The signal from the reflector 3 is supplied to the acoustic transducer 2 and through the amplifier 4 to the switch 7, which brings the first trigger 9 to the zero state. If the codes recorded in the first IS counter and the first memory block 6 are equal, the coincidence element 16 generates an I1 pulse that enters the second counter input 14 and zeroes the first counter 15. Such cycles of the first counter 15 are repeated until , while the acoustic signal reflected from the surface comes to the acoustic transducer 2. The reflected acoustic signal is converted into an electrical pulse in the acoustic transducer 2, amplified by optical amplifier 4, and through the first switch 7 transfers the trigger 10 to the zero state. The second KONtMyTaTop 12 disconnects the input of the first counter 15 from the output of the reference frequency generator 13, the code value recorded in the second counter 14 is entered into the second AND block of the memory and through the decoder 8 is sent to the display 5. The acoustic transducer 2 and the reflector 3 are at the reference distance. 64 The number of pulses recorded in the second counter 14 is determined by the measured distance. The proposed ultrasonic pulse distance meter allows a measurement accuracy to be increased 3-4 times. Invention Ultrasonic Pulse Distance Meter containing serially connected trigger pulse generator, acoustic transducer and amplifier, as well as display unit, characterized in that, in order to improve the accuracy of distance measurement, the first switch, the first and second triggers are introduced in series the reference frequency generator, the second KOMMyTatop, the first counter, the first memory block, the match element, the second counter, the second memory block and the decoder, and the reflector, and m the first and second inputs of the first switch are connected respectively to the output of the amplifier and the second output of the generator of triggering pulses, and the first and second outputs of the first switch are connected to the first inputs of the first and second triggers respectively, the third output of the generator of triggering pulses, the second inputs of the first and second counters and memory blocks, the output of the first trigger is connected to the third input of the first memory block, the output of the second trigger is connected to the second in house the second switch and the third input of the second memory block, the first counter output is connected to a second input of the coincidence, the coincidence output element coupled to the third input of the first schettaka, the decoder output is connected to the input of the indication unit. Sources of information taken into account during the examination 1. USSR author's certificate No. 449326, cl. G 01 S 7/52, 1972 (prototype).