| 摘要 |
Device for measurement of distances in water medium includes ultrasonic emitter and receiver, generator of frequency of ultrasonic pulses with block for frequency change, block for information processing and control, block for frequency measurement, power supply block, block for range calculation, block for storage of protection of information, block-mixer for frequencies of radiated and reflected pulses, block for frequency division by two, block for frequency comparison. At that one of outputs of generator of ultrasonic frequencies through power controller is electrically connected to input of block-mixer of frequencies, output of ultrasonic receiver through other power controller is electrically connected to the other input of frequency block-mixer. Output of frequency block-mixer is electrically connected to input of block for frequency division by two. Output of frequency division block is connected to input of block for frequency comparison, and output of block of frequency comparison is connected to one of inputs of block of information processing and control. |
