A wheel measurement system includes a wheel position and orientation system (WPOS) that has a linear sensor configured to connect with a vehicle and extend between a body of the vehicle and a wheel of the vehicle to measure linear motion therebetween while the vehicle is in motion and two or more rotary sensors configured to monitor angular changes at a mounting position of the linear sensor at the body of the vehicle and a mounting position of the linear sensor at the wheel of the vehicle while the vehicle is in motion. The linear motion and the angular changes determine movements of the wheel relative to the body while the vehicle is in motion.
G01B 21/26 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer des angles ou des conicitésDispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour tester l'alignement des axes pour tester l'alignement des roues
G01B 5/255 - Dispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques pour mesurer des angles ou des cônesDispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques pour tester l'alignement des axes pour tester l'alignement des roues
2.
Speed And Slip Determinations For A Vehicle Using Optical Flow Technology
A vehicle speed and/or slip of a vehicle is determined. At least first and second images of a traveling surface captured by an image sensor using an optical lens are received by a processor. The images are used to determine the distance travelled by one or more pixels in first and second directions. These distances, along with the sampling rate of the image sensor, determine pixel speed in the first and second directions. The pixel speeds in the first direction, the second direction, or both, may be used to calculate the vehicle speed, a side slip angle, or a longitudinal slip. A tire speed may also be similarly determined using a second image sensor, a second optical lens, and a second processor capturing images of the tire surface. These vehicle parameters may be used for testing or operating the vehicle, including modifying vehicle behavior during operation.
G06V 10/75 - Organisation de procédés de l’appariement, p. ex. comparaisons simultanées ou séquentielles des caractéristiques d’images ou de vidéosApproches-approximative-fine, p. ex. approches multi-échellesAppariement de motifs d’image ou de vidéoMesures de proximité dans les espaces de caractéristiques utilisant l’analyse de contexteSélection des dictionnaires
G06V 20/56 - Contexte ou environnement de l’image à l’extérieur d’un véhicule à partir de capteurs embarqués
A wheel measurement system includes a wheel position and orientation system (WPOS) that has a linear sensor configured to connect with a vehicle and extend between a body of the vehicle and a wheel of the vehicle to measure linear motion therebetween while the vehicle is in motion and two or more rotary sensors configured to monitor angular changes at a mounting position of the linear sensor at the body of the vehicle and a mounting position of the linear sensor at the wheel of the vehicle while the vehicle is in motion. The linear motion and the angular changes determine movements of the wheel relative to the body while the vehicle is in motion.
G01B 21/26 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer des angles ou des conicitésDispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour tester l'alignement des axes pour tester l'alignement des roues
G01L 5/20 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de la poussée latérale des roues
G01B 5/24 - Dispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques pour mesurer des angles ou des cônesDispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques pour tester l'alignement des axes
A vehicle speed and/or slip of a vehicle is determined. At least first and second images of a traveling surface captured by an image sensor using an optical lens are received by a processor. The images are used to determine the distance travelled by one or more pixels in first and second directions. These distances, along with the sampling rate of the image sensor, determine pixel speed in the first and second directions. The pixel speeds in the first direction, the second direction, or both, may be used to calculate the vehicle speed, a side slip angle, or a longitudinal slip. A tire speed may also be similarly determined using a second image sensor, a second optical lens, and a second processor capturing images of the tire surface. These vehicle parameters may be used for testing or operating the vehicle, including modifying vehicle behavior during operation.
G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
A stator angle is determined to correct a value measured by a wheel force transducer. A mounting bracket is rigidly attached to a vehicle and supports a housing within which a rotary encoder is mounted. A stator rod retainer is aligned with a rotational axis of the rotary encoder and has a through-bore extending perpendicular to the rotational axis. The stator rod retainer rotates relative to a stationary portion of the rotary encoder using at least one bearing, and the stator rod retainer supports a first end of a stator rod for substantially free movement through the through-bore. A controller determines, when the second end of the stator rod is fixedly attached to an encoder stator attached to a wheel, a stator angle of the stator rod used for adjusting at least one value associated with the wheel that is measured using the encoder stator.
G01L 25/00 - Test ou étalonnage des appareils pour la mesure des forces, du couple, du travail, de la puissance ou du rendement mécanique
G01L 5/16 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de plusieurs composantes de la force
6.
Wheel force transducer stator angle correction device
A wheel force transducer stator angle correction apparatus. The apparatus includes a stator rod retainer having a through-bore, the stator rod retainer being in mechanical communication with at least one bearing. The apparatus also includes a stator rod having a first portion rigidly attached to an encoder stator attached to a wheel and having a second portion disposed within the through-bore of the stator rod retainer. The apparatus also includes an encoder rigidly attached to a portion of a vehicle associated with the wheel, wherein the encoder is adapted to measure an angle of the stator rod and to adjust at least one value associated with a wheel speed of the wheel based on the measured angle of the stator rod.
G01L 25/00 - Test ou étalonnage des appareils pour la mesure des forces, du couple, du travail, de la puissance ou du rendement mécanique
G01L 5/16 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de plusieurs composantes de la force
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Engineering and consultation services related thereto for others in the fields of transportation systems, vehicle testing, vehicle instrumentation, wind power, solar panels, oil and gas, testing equipment, transducers, slip ring assemblies, electronics, fiber-optic systems, telemetry and instrumentation assemblies; design and consultation services related thereto for others in the fields of transportation systems, vehicle testing products, vehicle instrumentation, wind power products, solar panels, oil and gas equipment, testing equipment, transducers, slip ring assemblies, electronics, fiber-optic systems, telemetry equipment and instrumentation assemblies
Electro acoustic volume measurement of a gas in a housing space may be performed using a hollow tube having a first end and a second end. A speaker is arranged to emit audio signals through the hollow tube. A first microphone of at least two microphones is located at the first end of the hollow tube, while a second microphone is located a defined distance from the first microphone within the hollow tube. A voltage-controlled oscillator controls the frequency of the audio signals to a resonance frequency where signals of the first microphone and the second microphone are 90 degrees out of phase while the first end of the hollow tube is located within the housing. The resonance frequency indicates a volume of the gas. The resonance frequency may be temperature-adjusted, or the volume may be temperature-adjusted.
H04R 1/02 - BoîtiersMeublesMontages à l'intérieur de ceux-ci
H04R 1/40 - Dispositions pour obtenir la fréquence désirée ou les caractéristiques directionnelles pour obtenir la caractéristique directionnelle désirée uniquement en combinant plusieurs transducteurs identiques
H04R 3/04 - Circuits pour transducteurs pour corriger la fréquence de réponse
H04R 29/00 - Dispositifs de contrôleDispositifs de tests
Electro acoustic volume measurement of a gas in a housing space may be performed using a hollow tube having a first end and a second end. A speaker is arranged to emit audio signals through the hollow tube. A first microphone of at least two microphones is located at the first end of the hollow tube, while a second microphone is located a defined distance from the first microphone within the hollow tube. A voltage-controlled oscillator controls the frequency of the audio signals to a resonance frequency where signals of the first microphone and the second microphone are 90 degrees out of phase while the first end of the hollow tube is located within the housing. The resonance frequency indicates a volume of the gas. The resonance frequency may be temperature-adjusted, or the volume may be temperature-adjusted.
An ideal multi-axis transducer will respond properly to forces and moments that are applied in intermediate directions. The transducer calibration apparatus described herein can detect transducers that have incorrect off-axes response. One calibration apparatus includes a base, a pair of end stanchions fixed on the base, force actuators mounted between the base, the pair of end stanchions, and a transducer holder, the force actuators arranged to exert forces and moments on a transducer mounted in the transducer holder, and force reaction sensors fixed between the base, the pair of end stanchions, and the transducer holder for measuring forces and moments experienced by the transducer holder.
An ideal multi-axis transducer will respond properly to forces and moments that are applied in intermediate directions. The transducer calibration apparatus described herein can detect transducers that have incorrect off-axes response. One calibration apparatus includes a base, a pair of end stanchions fixed on the base, force actuators mounted between the base, the pair of end stanchions, and a transducer holder, the force actuators arranged to exert forces and moments on a transducer mounted in the transducer holder, and force reaction sensors fixed between the base, the pair of end stanchions, and the transducer holder for measuring forces and moments experienced by the transducer holder.
G01L 5/16 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de plusieurs composantes de la force
A fiber optic communication signal link apparatus for performing fiber optic link communication including a transmitter apparatus and a receiver apparatus coupled by a fiber optic cable. The transmitter is capable of detecting and modulating data that includes at least one of position, light and audio data. An analog voltage signal representing the data is transmitted to the transmitter apparatus wherein the signal is detected, converted to a frequency signal and modulated through the fiber optic cable to the receiver apparatus. Subsequently, the frequency signal is detected, demodulated and converted back to a voltage analog signal in the receiver apparatus.
H04B 10/12 - Transmission par guides de lumière, p. ex fibres optiques (H04B 10/22, H04B 10/24, H04B 10/30 ont priorité);;
H04B 10/00 - Systèmes de transmission utilisant des ondes électromagnétiques autres que les ondes hertziennes, p. ex. les infrarouges, la lumière visible ou ultraviolette, ou utilisant des radiations corpusculaires, p. ex. les communications quantiques
