Solid state depth sounder

Details Solid state depth sounder Solid state depth sounder

1974-08-19

1976-03-02

Farley, Richard A.

Communications: electrical

Selective

Monitoring in addition to control

340 1C, 340 3C, 340 3F, 343 13R, G01S 968, G01S 760

Patent

active

039421490

ABSTRACT:
A solid state depth sounding system, for measuring depth and detecting the presence of underwater objects, comprises an oscillator, producing high frequency electrical signals, a transmitter, for intermittently amplifying those signals, a transducer, and a receiver. The transducer produces high frequency sound impulses from the intermittent amplified signals, and transmits those impulses through the water until they are reflected by some underwater object. The transducer also picks up the reflected sound impulses and provides a high frequency electrical signal to the receiver which amplifies and detects it to produce a return pulse related in analog value to the strength of the reflected signal. The time delay between the transmission and reception of the high frequency sound impulse, and consequently the distance to the reflecting object, is measured by applying either a transmit pulse or a return pulse to the serial input of a multibit BBD or CCD shift register with a specified number of parallel outputs. When the contents of the shift register are sampled, the pulse or pulses in the register are used to drive display elements corresponding to the bit or bits in which those pulses are found. A properly calibrated display, driven by these pulses will indicate the presence and depth of underwater reflecting objects. By applying the analog return pulse to the input of the shift register, and by sampling at predetermined intervals the display will indicate, by the relative intensity of the driven display elements, the relative strength of the reflected signals. A number of such solid state depth sounders may be used to provide multidirectional depth measuring and detection with a single coordinated display. The display device and signal processing equipment are designed to indicate the lateral distance to a reflecting object as well as its depth.

REFERENCES:
patent: 3553711 (1971-01-01), Kurimura et al.
patent: 3588795 (1971-06-01), Linardos et al.
patent: 3735334 (1973-05-01), Ahrens et al.
patent: 3750095 (1973-07-01), Olesen
patent: 3803629 (1974-04-01), Walsh et al.
patent: 3835447 (1974-09-01), Lowrance

Affiliated with

Also associated with

Rating

Solid state depth sounder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Solid state depth sounder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solid state depth sounder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1281514