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7973705 |
Marine bump map display
A plotting system and method for plotting radar and/or sonar signals on a bump map, with a simulated height of each data point representing a corresponding signal strength. The plotting system may...
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7817805 |
System and method for steering the directional response of a microphone to a moving acoustic source
A system and method are provided for automatically tracking the movements of an acoustic source relative to two or more microphones possibly mounted in a portable device. The microphones are...
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6847586 |
Portable human height measuring device
The invention is a portable human height measuring device. The device consists of an ultrasonic distance sensor, a controller and several output units. The ultrasonic distance sensor measures a...
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6542085 |
Distance measuring and monitoring device equipped automobile reverse radar
A distance measuring and monitoring device equipped automobile reverse radar comprises: a photocoupler camera with a wide-angle lens installed at an automobile rear end for taking pictures of...
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6208588 |
Depth sphere
A compact self contained portable, buoyant, water depth and temperature recording device. Allowing the user to gather depth recordings for safety and sporting situations. With it's simplicity of...
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5940012 |
Collision avoidance system and method for operating the same
A device for determining the distance between the rear of a trailer and a loading dock is disclosed which assists a driver backing the trailer up to the loading dock by visually and continuously...
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5793308 |
Vehicular position monitoring system with integral mirror video display
A vehicular position monitoring system includes an integral mirror video display. The display is capable of showing various fields of vision from various parts of the vehicle and can be strobed by...
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5737963 |
Ultrasonic transducer
A small, compact, easily mountable ultrasonic transducer for measuring the filling level in a container is provided, which transducer transmits virtually no oscillation energy to the container,...
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5459479 |
Solid state depth locator having liquid crystal display
A solid state depth locator comprises an LCD display having a plurality of LCD segments for providing a real time output indicative of the depth of targets in a body of water. A drive circuit...
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5327398 |
Fishfinder with readout of bottom coverage
A fishfinder having a real time or A-scope display with a numerical readout indicating the diameter of the transducer beam on the bottom of the water body. Further, an indicia indicating the...
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5303205 |
Vehicular distance measuring system with integral mirror display
A vehicular distance measuring system includes a distance measuring device for detecting a distance to an object and, in response, supplying a distance signal. An ultrasonic transducer mounted in a...
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5187688 |
Method of counting the number of passers-by
A passage is periodically scanned by a plurality of ultrasonic transmitters/receivers (sensors) arranged on the ceiling of the passage in two lines to calculate the height of an object to be...
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5148411 |
Distance measurement device
A distance measuring device including a casing bearing a visual display and incorporating therein a transmitter for directing signals toward a selected surface; a receiver for detecting echoes from...
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5062087 |
Hand held electronic grading level
A hand held electronic grading level which automatically and accurately calculates the grade of a ground plane and indicates whether said grade is level. The grading level comprises a telescopic...
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4974215 |
Loading dock range finding system
A loading dock range finding system is provided for permitting a driver of a vehicle backing towards a loading dock to determine a distance of the back end of the vehicle from a reference point at...
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4953141 |
Sonic distance-measuring device
A sonic distance-measuring device (10) for use in air includes three transducers (14, 16, and 18) in an array of transducers, which are driven in a predetermined phase relationship so as to achieve...
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4928525 |
Sonic tank inventory control system and method
A system for measuring the level of a fluid in a tank comprises a plurality of reflectors positioned in the tank with the reflectors being a known distance from one another and a first reflector...
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4837750 |
Apparatus for displaying depth sounding data with nautical range
Apparatus and a method for displaying depth sounding data with nautical range are disclosed for use on vessels or the like, the device including a transceiver for transmitting an acoustic signal...
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4831604 |
Ultrasonic range finding
Range finding equipment is employed in a nuclear reactor to monitor the spacing between structural components (22, 24) of the reactor which are under stress. A manipulator (32) carries a pair of...
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4829493 |
Sonar fish and bottom finder and display
An improved microprocessor-controlled sonar depth sounder, which is automatically operative to detect and lock to the bottom of a body of water, fill in the display below the detected bottom,...
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4829492 |
Depthfinder with color LCD display
A depthfinder has a color LCD display without a polarizer. This permits viewing of the display in bright sunlight, such as would be ordinarily used for fishing, without washing out of the display....
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4731762 |
Distance sensing apparatus
Apparatus for sensing distances in air by transmitting an ultrasonic pulse and measuring the time for return of an echo from a target object is characterized by ability to measure distances to...
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4674073 |
Reflective object detecting apparatus
A plurality of ultrasonic transmitting elements and ultrasonic receiving elements are provided and are electrically switched in a sequential manner to change a region over which the existence of an...
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4651309 |
Fish sonar
In the fish sonar, the temperature and the hydrogen ion exponent in the sea are recorded or displayed on the recording medium or display of the recording or displaying device with digital echo...
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4649527 |
Ultrasonic proximity switch
This invention is of an ultrasonic proximity switch having a range selection control circuit. The range selection control circuit is in this instance separated from the sensor by being installed in...
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4644512 |
Sonar depth finder with relative depth LCD display
A computer system is proposed for finding and displaying the depth and depth related values of an object in an aquatic environment in which and LCD display is subdivided into segments each...
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4644513 |
Electrical circuits for timing signals
From a first aspect this invention provides a missing pulse detector for determining the true termination time of a sequence of pulses in a signal of an assumed predetermined length having a rising...
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4597069 |
Depthsounder/fish finder
A depthsounder for selectively measuring either bottom depth or the depth of any fish located beneath a vessel. When operating in a depth mode, the depthsounder automatically adjusts the gain of...
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4584676 |
Method of and apparatus for pipe length measurement
An improved method and apparatus for measuring the length of an open pipe includes a sound transducer placed in spaced open air communication with the interior of the pipe at a selected end. A...
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4578997 |
Time-shaped AGC for ultrasonic liquid level meter of the echo-ranging type
An ultrasonic, echo-ranging instrument for measuring the level of liquid in an open channel or tank. The instrument includes a transducer disposed at a fixed position directly above the liquid...
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4574368 |
Distance measuring system using ultrasonic ranging
A system for measuring the distance between two objects, for determining the center between two objects and for triangulating the height of a tall object. In measuring the distance between two...
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4569037 |
Apparatus for determining the distance from a predetermined point to a target
Method and apparatus for determining the distance from a preselected point to a target. An electrostatic ultrasonic transducer in a special protective housing is used with a single-pulse,...
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4528679 |
Automatic counting system for passages
The invention is particularly useful for counting the passengers moving into and out of a common carrier vehicle such as a motor bus. Three ultrasonic ranging stations are provided to determine the...
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4518253 |
Distance measurement system
A distance measurement system for measuring distance to an object by emitting light to the object and measuring the intensity of light reflected from the object.
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4510587 |
Method and arrangement for the evaluation of signals from an ultrasonic displacement path measuring system
The method and arrangement contemplates transmitting externally triggered trigger pulses by means of a magnetostrictive line or conductor and such produces echo pulses. Displacement path and time...
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4506354 |
Ultrasonic position detecting system
A system measures the (x, y) coordinates of a target, for example, a pointed finger on a flat surface such as a rectangular plate. A pair of ultrasonic transducers are placed on the plate so that...
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4500977 |
Method and apparatus for measuring a distance using ultrasonic echo signals, particularly for use on a motor vehicle
A circuit for measuring and indicating the separation distance between a vehicle and adjacent obstacles, consisting of a pulse controlled ultrasonic generator, an ultrasonic transmit-receive...
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4493065 |
Web position indicator
Method and apparatus for web break detection employing a sonic signal generator to generate regularly repetitive sonic signals of selected frequency, duration and time spacing between signals and...
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4479207 |
Load detecting system for automatic storage apparatus
Apparatus for detecting a load within a preselected bin of an automatic storage rack has a transducer for directing an ultrasonic beam into the bin and for detecting an echo reflected from a load...
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4470299 |
Ultrasonic liquid level meter
An ultrasonic echo-ranging system adopted to measure the level of liquid in an open channel or other liquid container. The system includes an ultrasonic transducer disposed at a fixed position...
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4468959 |
Method and apparatus for tallying pipe
Tubular goods, such as drill pipe and production tubing, are measured while going into and coming out of a borehole. An electronic beam is directed from a transmitter and is detected by a distance...
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4464738 |
Sonar distance sensing apparatus
A distance sensing apparatus is provided in the form of a case housing electronic equipment including a piezoelectric transducer for radiating pulsed sonic or ultrasonic signals along a measurement...
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4439846 |
Sonar rangefinder system
An ultrasonic rangefinder system for use in either an ultrasonic rangefinder camera or a general purpose ultrasonic rangefinder designer's kit provides a plurality of automatic sonic rangefinder...
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4439844 |
Salmon counter with separate king salmon tabulator
A sonar fish counter, primarily for counting salmon migrating in streams and for providing a separate count of king salmon, includes a narrow beamwidth side-scanning sonar transducer directed to...
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4420751 |
Detection method and apparatus for a user device or automatic teller bank machine
A method and apparatus are disclosed for detecting (ultrasonically or eletromagnetically) events of the presence and movement of a user within a defined user area, and a user operating zone within...
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4420824 |
Sonar apparatus having improved gain control
A sonar device for use on a boat to indicate the depth of water on a digital display, including a transducer positioned in the water to transmit bursts of sound energy and for receiving echo energy...
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4413518 |
Apparatus and method for measuring the extension of bolts under stress
A bolt elongation measurement apparatus and method for measuring the length of bolts of all sizes and shapes. The apparatus utilizes a microprocessor-based digital system including a binary counter...
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4410967 |
Method for sampling flying insect populations using low-frequency sound detecting and ranging in conjunction with a biologically active chemical/pheromone
A unique method for detecting and sampling flying insect populations is disclosed. An agricultural area is baited with a specific sex pheromone of a specific flying insect. When the flying insect...
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4409827 |
Combined marine instrument and display therefor
A combined knotmeter, distance/log meter and depth meter including a meter housing, a dial face having indicia symmetrically centered thereabout, an analog speed indicator having a pointer for...
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4398420 |
System for measuring the wall thickness of an object
The wall thickness of an object is measured on the basis of three consecutive rear wall reflections caused by an ultrasonic wave impinging on the front wall of the object. The time intervals...
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