Matches 151 - 200 out of 397 < 1 2 3 4 5 6 7 8 >
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6137438 Precision short-range pulse-echo systems with automatic pulse detectors  
An equivalent time pulse-echo radar or other pulse-echo system employs a transmit reference sampler collocated with the transmitter to provide a transmit reference pulse, which initiates a pulse...
6122602 Method and arrangement for electromagnetic wave distance measurement by the pulse transit time method  
For electromagnetic wave distance measurement by the pulse transit time method, short electromagnetic transmission pulses are emitted at periodic transmission instants. The signals received in...
6104671 Apparatus and method for measuring the relative velocity and true distance between two objects  
An apparatus and method for measuring the true distance and relative velocity between first and second objects. The apparatus comprises a transceiver located at the first object which measures a...
6097669 Wavelet filtering of sodar signals  
A method for determining Doppler shifts and reflectivity data based on wavelet based sodars. Initially, a high powered sodar pulse of sound is transmitted from an antenna into the atmosphere. This...
6085592 Ultrasonic sensor and obstruction detector having accurate obstruction detection capabilities  
A short ring is mounted onto a back part of a housing of an ultrasonic sensor so that the short ring is coaxial with the housing. The width of the short ring along the axial direction of the...
6070832 Ultrasonic angular measurement system  
An ultrasonic angular measurement system is disclosed. The system is comprised of three parts, a control box used to collect and process data, an ultrasonic transducer, and a reflector block. The...
6069585 Personal direction finding apparatus  
6055214 Imaging system for detecting underground objects and associated method  
In a method for detecting objects hidden underground, a plurality of electromechanical transducers including at least one electroacoustic pressure wave generator and at least one acoustoelectric...
6049510 Robust and intelligent bearing estimation  
A method of bearing estimation comprising quadrature digital filtering of event observations, constructing a plurality of observation matrices each centered on a time-frequency interval,...
6006144 Driving force control apparatus for moving vehicle by desired distance  
A driving force control apparatus for moving a vehicle by a desired distance includes an input section for input a desired move distance, a throttle controller section for setting a throttle...
5973996 Ultrasound intrusion detector  
This invention discloses a method for detecting the presence of a moving object in a detection area, including emitting a sequence of bursts of ultrasonic energy into the area, receiving ultrasonic...
5907521 Ultrasonic range finder using ultrasonic sensor  
An ultrasonic range finder which can effectively suppress the influence of direct transmission waves is provided. An ultrasonic range finder according to the present invention comprises a...
5878379 Coarse volume measurement with interlock  
A dimensional weighing apparatus is disclosed which has a weighing scale for determining the actual weight of a carton placed thereon, and associated therewith is a measuring frame and an optical...
5877997 Pulse echo distance measurement  
The invention concerns pulse echo distance measurement and in particular a method and apparatus for calculating such a distance by sensing multiple reflections of a given pulse signal. By sensing...
5872743 Method and apparatus for locating the user of a computer system  
A method and apparatus for locating the user of a computer system and adjusting the sound from the system speakers. The computer system includes a computer, two speakers, a microphone, a signal...
5872507 Process for non-contact distance measurement  
In a procedure for non-contact distance measurement, in particular to measure the distance from obstacles in the immediate vicinity of motor vehicles, measurements are made using a first measuring...
5856953 Processing echoes in ultrasonic liquid gauging systems  
Method for processing echoes received in an ultrasonic liquid gauging apparatus includes the steps of transmitting at time t 1 ultrasonic energy from an ultrasonic transducer toward a fixed target...
5834710 Acoustic pulse gun assembly  
A gas gun is provided for generation of an acoustic pulse and subsequent detection of return reflections from the annulus of a well. The system includes a gas gun and a hand-held gas source. The...
5822274 Method and apparatus for acoustically measuring the level of liquid in a tank  
A time-domain reflectometer is disclosed for reliably measuring the level of a liquid in a tank. The reflectometer emits an acoustic signal into a waveguide that projects downwardly into the tank...
5822275 Method and apparatus for fixed target echo suppression in distance measurement on the principle of pulse transit time  
In distance measurement on the principle of pulse transit time in each measurement cycle in a transmitting phase a transmission pulse having a given transmission frequency is emitted and in a...
5808968 Car obstacle monitoring system  
A car obstacle monitoring system which will not erroneously detect a distant obstacle as an obstacle around a car and can avoid an erroneous detection by relatively simple control even though it is...
5805525 Method and apparatus for hydroacoustic detection and characterization of submersed aquatic vegetation  
Disclosed is a method of detecting the bottom of a waterbody in the presence of overlying submersed aquatic vegetation (SAV) and of characterizing physical attributes of that overlying vegetation....
5805527 Method and apparatus for measuring distance  
A distance measuring apparatus includes a wave transmitting device for emitting a transmission wave. A wave receiving device is operative for receiving a reflection wave, which results from...
5796679 Doppler velocimeter for monitoring groundwater flow  
Groundwater velocity and direction of flow are determined by insertion into borehole below the water table of a sound source and a plurality of sound sensors. A periodic sound signal is emitted by...
5790068 AFC control switching circuit  
An automatic frequency control loop for maintaining a center carrier freqcy fed to a notch filter for blocking out system reverberation includes, along with the conventional elements found in an...
5774136 Ultrasonic method for monitoring inkjet cartridge levels  
The present invention relates generally to inkjet printing mechanisms, and more particularly to an ultrasonic method for monitoring the ink level in an ink reservoir for an ink jet cartridge. This...
5763838 Apparatus for weighing a grown crystal  
The disclosed apparatus weighs a grown crystal that is being pulled from melt thereof. The lower end of a rope of known weight is connected to the crystal, while the upper end of the rope is...
5761155 Method for determining the position of an object relative to the background with ultrasound  
In a method for determining the position of an object relative to the background with ultrasound, a plurality of ultrasound transducers arranged in a row simultaneously transmit ultrasound in...
5761153 Method of locating hydrophones  
A method of computing the location of air guns and hydrophones within a seismic spread utilizes a navigation network having a plurality of stations. The network provides a plurality of navigation...
5754495 Method for acoustic determination of the length of a fluid conduit  
A method and apparatus for determining the length of a fluid conduit using acoustics is disclosed. The inventive method for determining the length L FC of an unblocked section of fluid conduit,...
5703594 Method for remotely detecting tides and the height of other surfaces  
Transmitted signals are used to accurately and remotely determine the veral distance of an earth-based receiving antenna above a surface, and hence can be used to determine the tide condition of a...
5703834 Ultrasonic sensor and method of using such a sensor  
A ultrasonic sensor for detecting the location of objects disposed in a substantially gaseous environment includes a plurality of nodes arranged into a uniform network. A plurality of circular...
5696705 System and method for reconstruction of the position of objects utilizing a signal transmitting and receiving distance determining device  
A system and method for data entry and retroactive reconstruction of the relative position of features and objects, in particular with respect to scenes such as transitory occurrences, utilizing a...
5689422 Converter for cruise control system  
A converter for use with a constant speed vehicle cruise control system including a speedometer for generating a self speed signal representative of the self speed of the vehicle and a speed...
5671190 Method and device for measuring the distance of an object from an ultrasonic transmission/reception unit  
The method makes it possible, in particular, to measure distances which lie within the ambiguity zone of the ultrasonic transmission/reception unit. The ultrasonic transmission/reception unit...
RE35607 Distance measuring method and apparatus therefor  
A distance measuring method and apparatus in which first and second pseudo random signals which are the same in pattern but slightly different in period are generated to obtain a correlation output...
5666325 Method and apparatus for monitoring and controlling the dispensing of materials onto a substrate  
A dispensing system includes a robot that controls the positional location of a dispenser that dispenses a bead of material, such an adhesive, onto a substrate and wherein a sensor monitors the...
5631875 Device for measuring distance with ultrasound  
A device for the measurement of distance with ultrasound is provided in which a transmitter emits a pulse-type signal which is reflected and is converted into an electrical echo signal in a...
5629851 Cruise control systems for motor vehicles  
A cruise control system for a motor vehicle includes a forward looking distance sensor adapted to sense vehicles moving in the same path as the equipped vehicle or in paths adjacent to the equipped...
5623524 Method and apparatus for measuring the depth of an underwater target  
A method and apparatus for determining the depth of a marine target relat to the surface of the water which encompasses an analog processing circuit for detecting and analyzing signals reflected...
5606533 Data acquisition system and method  
A ranging and data taking system, useful as an acoustic sediment classification system. The system launches acoustic pulses into a water column above a sediment bed of interest (seafloor, riverbed,...
5602542 Parking aid with a wheel sensor  
A circuit arrangement determines a distance of a motor vehicle from an obstacle in a near range by a displacement sensor instead of an ultrasonic measurement. The distance is determined, above a...
5587969 Process for the recognition and separation of useful and interfering echoes in the received signals of distance sensors which operate in accordance with the pulse-echo principle  
In a first step, an individual echo is associated with each local maxima in the received ultrasonic signal. Subsequently, characteristic features such as time position, amplitude and form factor of...
5586085 Container and adaptor for use with fluid volume sensor  
A container having affixed thereto an ultrasonic transducer, including a connection for electrically linking the transducer to electronic circuitry located outside the container. Flexible and...
5577006 Adaptive acoustic signal target detection system  
An acoustic ranging and detection system comprises an acoustic transmitter for producing an acoustic ranging signal and first and second acoustic receivers positioned on either side of the acoustic...
5572484 Short range ultrasonic distance warning system for motor vehicle  
A short range ultrasonic distance warning system is used as a parking aid in a motor vehicle. The entire system is active in the case of reverse gear being selected and low speed, and is...
5568449 Methods and apparatus for use in ultrasonic ranging  
An ultrasonic probe utilized in an ultrasonic ranging system for determining fluid volume and/or fluid leakage in an underground storage tank, as well as monitoring fluid inventory, is provided...
5563848 Object detector for detecting buried objects  
An object detector for detecting metallic or non-metallic objects is disclosed which comprises a sound source such as a speaker (12) for generating impulse short sound bursts. A tube (16) conducts...
5561641 Underwater detection system for determining carrier frequencies of signals arriving from a wide area  
The present invention is directed to provide an underwater detection system which can determine frequency components contained in echoes arriving from all azimuthal directions at high speed and...
5541891 Distance sensing device  
A distance sensing device for a motor vehicle, positioned at the rear of the motor vehicle, for sensing a distance to an obstacle to the rear of the motor vehicle, has a brake light unit positioned...
Matches 151 - 200 out of 397 < 1 2 3 4 5 6 7 8 >