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| Number | Title | Issue Date |
| 8179741 | Compensation for depth finders System and methods are disclosed for compensating a depth signal for a depth finder of a boat. In one embodiment, a compensation system is implemented between the depth finder and a transducer mounted on the boat. The compensation system receives a depth signal (i.e... | 05/15/2012 |
| 8174931 | Apparatus and method for providing indoor location, position, or tracking of a mobile computer using building information An apparatus and method for providing indoor location, position, or tracking of a mobile computer using building information. The mobile computer determines the dimensions of a room in a building using a range finder in the mobile computer. The determined dimensions... | 05/08/2012 |
| 8164982 | Ultrasonic sensor with piezoelectric elements and acoustic matching members An ultrasonic sensor includes a transmitting device, receiving devices arranged in an array, and a circuit device. One receiving device is configured as a reference receiving device. The circuit device includes a reference signal generator and first and second synch... | 04/24/2012 |
| 8164981 | Ultrasonic distance-measuring sensor with gap and partition between vibrating surfaces An ultrasonic distance-measuring sensor assembly and an ultrasonic distance-measuring sensor thereof are disclosed. The ultrasonic distance-measuring sensor includes at least two piezoelectric actuators and a member. The member includes a side wall, at least two vib... | 04/24/2012 |
| 8107319 | Acoustic fluid height monitoring using dynamic surface perturbations A method of determining the volume or height of fluid in a reservoir is provided. A first burst of focused acoustic energy is used to raise temporarily a protuberance on a free surface of the fluid. A second burst of acoustic energy is directed to the free surface o... | 01/31/2012 |
| 8089826 | Ultrasonic device for detecting direction to object A ultrasonic device detecting a direction to an object includes: a transmitting element of a ultrasonic wave; first and second receiving elements; a diffraction wave phase detector; an initial phase memory for an initial phase of a diffraction wave; a sound speed de... | 01/03/2012 |
| 8031556 | Obstacle detection apparatus An obstacle detection apparatus for a vehicle is provided. The apparatus includes an ultrasonic sensor and a controller. The ultrasonic sensor detects a presence of an obstacle around the vehicle and a distance to the obstacle by transmitting an ultrasonic wave and ... | 10/04/2011 |
| 8031557 | Method of operating an acoustic pulse echo ranging system A method of operating an acoustic pulse echo ranging system is provided. A series of acoustic energy pulses of successively increasing or decreasing burst frequencies are transmitted through a transducer assembly. For each transmitted energy pulse associated echoes ... | 10/04/2011 |
| RE42430 | Dimensioning system and method of dimensioning A method and apparatus for dimensioning and, optionally, weighing a cuboidal object. Four distance sensors are employed, one downwardly facing the top of the object, one facing one side thereof and two respectively facing mutually parallel sides of the object perpen... | 06/07/2011 |
| 7957223 | Ultrasonic ranging in the near zone An ultrasonic ranging device for ultrasonic ranging in the near zone. The device may include a transducer for generating an ultrasonic signal and for detecting an echo signal. The device may also include a processor for calculating the distance to a target object ba... | 06/07/2011 |
| 7911881 | Method and apparatus for ultrasonic sensing A distance and temperature sensing unit is used on paving vehicles. The unit has a first set of range sensors of a first diameter and a second set of range sensors of a second diameter. The unit calculates a weighted average distance to a road surface based on range... | 03/22/2011 |
| 7894304 | Project calculator with integral distance measurement sensor A project calculator, including a housing, a circuit board mounted within the housing and including a processor, an input device connected to the circuit board and interfacing with the processor, an output device connected to the circuit board and interfacing with t... | 02/22/2011 |
| 7869305 | Ground vehicle collision prevention systems and methods The present invention comprises systems and methods for preventing collisions between aircraft and ground vehicles. In one embodiment, a system includes a proximity detection unit and a transducer proximate to a selected structural portion of an aircraft, the proxim... | 01/11/2011 |
| 7843767 | Object detection apparatus and method A reflection-point estimation section constituting an object detection apparatus first calculates a rotational correction angle for each estimated reflection point Pn by using the following equation, using the fact that the ratio of the amount of change i... | 11/30/2010 |
| 7826309 | Filling level measurement device and filling level measurement and monitoring method A method for measuring a fill level of a fill substance in a container and for monitoring at least one predetermined fill level (LMIN, LMAX), using a fill level measuring device working according to the travel-time principle, as well as a corre... | 11/02/2010 |
| 7724609 | Sonic cup gun A paint spray gun and range finder for positioning the gun with respect to a target surface to be sprayed. The range finder provides a user of the gun with information about the distance between the gun and the target surface, with different indications when the gun... | 05/25/2010 |
| 7710824 | Location monitoring and sonar determination of presence A system is provided for location monitoring. The system includes an event sensor and a sonar sensor in communication with the event sensor. The event sensor detects an event at a location. The sonar sensor determines a presence at the location. ... | 05/04/2010 |
| 7693007 | Ultrasonic sensor with separate sending device and receiving device An ultrasonic sensor includes a sending device and a receiving device. The sending device has a sending surface for sending an ultrasonic wave into a sending area. The receiving device has a receiving surface for receiving the ultrasonic wave reflected by an externa... | 04/06/2010 |
| 7688677 | System and method for determining properties of tubular cavity A method for determining the distance of a transceiver located within a lumen from the center of the lumen and for determining the radius of the lumen, the lumen cross-section being substantially circular at the transceiver location, the method applied on data recei... | 03/30/2010 |
| 7688678 | Room volume and room dimension estimation One embodiment of the invention includes a processing subsystem (30) responsive to the detection of sound coming from a room (26) to establish an acoustic impulse response for the room (26), and determine a number of sound reflections correspond... | 03/30/2010 |
| 7679996 | Methods and device for ultrasonic range sensing A system and method for sensing proximity of an object includes a signal generator, which generates a plurality of signals. A transducer is in communication with the signal generator to receive the plurality of signals from the signal generator. The transducer is ca... | 03/16/2010 |
| 7660205 | Method for determining the depth of a parking space using ultrasonic sensors and associated system A method for determining the depth of a parking space using at least one ultrasonic vehicle sensor. According to the method, the following steps are carried out as the vehicle drives longitudinally past the parking space: a) an ultrasonic wave is emitted, b) echo si... | 02/09/2010 |
| 7613073 | Ultrasonic sensor An ultrasonic sensor includes a plurality of vibrating parts, a plurality of receiving elements, and a waveguide. Each of the vibrating parts vibrates when a corresponding ultrasonic wave reflected by a detection object is transmitted thereto, and receives the ultra... | 11/03/2009 |
| 7602671 | Oil heating tank meter for monitoring a plurality of variables A method for measuring a distance of an object with a distance measuring unit, the method including: sending a first signal from the distance measuring unit toward the object; receiving a second signal from the object; and measuring the second signal via the distanc... | 10/13/2009 |
| 7542375 | Method for simultaneous transmission of soundwaves and, in particular, sonar pulses, without interference A system and method simultaneously transmits sound waves through a plurality of sonar elements without interference, such as for the purpose of tracking objects underwater. The system has a pulse generator with a plurality of transceivers connected to the pulse gene... | 06/02/2009 |
| 7505363 | Automatic switch for marine sounders A switch that couples transducer signal to a specific sounder of multiple sounders in response to a sensed signal from the specific sounder. The switch can include a first detection circuit that determines the sounder that is requesting the first transducer signal a... | 03/17/2009 |
| 7492666 | Sonar system having multiple pulse sequences A sonar system comprises a transmitter adapted to provide pulse sequences, wherein each of the pulse sequences includes pulses that reflect off an object, a receiver adapted to receive the reflected pulses, and a processor. The processor is configured to transmit a ... | 02/17/2009 |
| 7483336 | Device for avoiding obstacles for high-speed multi-hulled watercraft One or more embodiments of the present invention are aimed at a device for ships, in particular for multihull ships and high-speed multihull ships making it possible to avoid obstacles, in particular obstacles submerged at low depth. In at least one embodiment, the ... | 01/27/2009 |
| 7453769 | Cavitating body sonar system and process An exemplary embodiment of the present invention may include a cavitating body sonar system and method. The method may include, in an exemplary embodiment: applying a receiving-while-transmitting sonar signal processing to at least one cavitating body, over an entir... | 11/18/2008 |
| 7420876 | Obstacle sensor having supersonic sensor An obstacle sensor includes: a supersonic sensor for detecting an obstacle in a first range, the supersonic sensor including a substrate, a transmission device and a reception device disposed on the substrate; a detection element for detecting the obstacle in a seco... | 09/02/2008 |
| 7420877 | Method for processing an echo profile In a method for processing an echo profile generated by a pulse-echo ranging system, the echo profile is compared with a time-varying threshold function to identify valid echoes in those portions of the echo profile which exceed the TVT function. Based on the amplit... | 09/02/2008 |
| 7417922 | Obstacle detection device and method for estimating receiving time An obstacle detection device includes a transmitting portion for sending ultrasonic wave, a plurality of receiving portions provided at different positions and receiving reflected waves of the ultrasonic wave, a plurality of envelope wave acquiring portions for acqu... | 08/26/2008 |
| 7408838 | Digitizing planimeter A planimeter includes a movable housing in which are mounted orthogonally aimed x- and y-position sensors. Each position sensor comprises a piezoelectric ultrasound transmitter and receiver for sending ultrasound to a reflector disposed on a drawing and sensing resu... | 08/05/2008 |
| 7391676 | Ultrasonic distance sensors A lithographic apparatus comprises an illumination system, a support constructed to support a patterning device, and a projection system. In pixel grid imaging, a large number of small optical spots are imaged onto the substrate surface using a micro-lens array (MLA... | 06/24/2008 |
| 7391505 | Range sensing system The invention relates to a solid-state range sensing system. As with previous solid-state range sensing systems, an energy source is activated and deactivated in a cyclic pattern with a selected source frequency. A receiver is adapted to sense the reflection of emit... | 06/24/2008 |
| 7390379 | Method and apparatus for determining the lateral position of a web or fabric edge in a former The lateral position of a web or fabric edge 11 in a paper machine is determined using an ultrasonic sensor. The ultrasonic sensor has a detector head 42, with an air channel system which opens to the vicinity of the head for forming an air knife which... | 06/24/2008 |
| 7388810 | Ultrasonic distance measurement system A system for measuring distance in a gas or liquid operating medium has an even number of ultrasonic signal transmitters (12, 14), and a single ultrasonic signal receiver (16). The ultrasonic signal transmitters are adapted to transmit ultrasonic signa... | 06/17/2008 |
| 7385487 | Obstacle detection method and system, particularly for systems for assisting the parking of vehicles An obstacle detection system, particularly for assisting car parking that comprises a control unit and a plurality of sensors, which comprise emitters-receivers for emitting an ultrasonic signal and for receiving an echo signal reflected by at least one obstacle and... | 06/10/2008 |
| 7374537 | Performing ultrasound ranging in the presence of ultrasound interference A distance measuring system comprises first and second transducers, and an ultrasound ranging subsystem coupled to the first and second transducers for performing a plurality of distance measurements between the first and second transducers. The distance measurement... | 05/20/2008 |
| 7376493 | Vehicle-surroundings monitor apparatus A vehicle-surroundings monitor apparatus according is provided with a sensor having a transmission/reception means for transmitting an ultrasonic wave to surroundings of a vehicle and receiving a reflected ultrasonic wave from the surroundings, a transmission circui... | 05/20/2008 |
