67 results about "Sense of direction" patented technology

The present invention includes a system and a method by which the inclination of a machine element, such as a platform, may be sensed, and errors that might otherwise result from tangential and radial acceleration eliminated. The platform defines orthogonal X and Y axes, and a Z axis orthogonal to both the X and Y axes. The platform is rotatable about an axis extending parallel to the Z axis. The system includes an inclinometer, mounted on the platform at a location spaced from the axis of rotation by a distance r, for providing inclinometer outputs indicating acceleration in the X and Y directions, designated as Ix and Iy, respectively. A line from the axis of rotation to the inclinometer forms an included angle B with the X axis. A rate gyro is mounted on the platform. The rate gyro senses the rotational speed w of the platform about the axis of rotation and provides a rate gyro output indicating the rotational speed w. A circuit differentiates the rate gyro output to determine the angular acceleration of the platform dw / dt. A circuit multiplies the angular acceleration by the value r to determine the tangential acceleration of the platform at the point where the inclinometer is mounted r(dw / dt). A circuit resolves the tangential acceleration of the platform at the point where the inclinometer is mounted to determine the X axis component thereof, and resolves the tangential acceleration of the platform at the point where the inclinometer is mounted to determine the Y axis component thereof. A circuit subtracts the X axis component of the tangential acceleration of the platform at the point where the inclinometer is mounted from the acceleration Ix, sensed in a direction parallel to the X axis, and subtracts the Y axis component of the tangential acceleration of the platform at the point where the inclinometer is mounted from the acceleration Iy, sensed in a direction parallel to the Y axis. As a consequence, the inclinometer outputs Ix and Iy are corrected for errors that would otherwise result from tangential acceleration.

The present invention discloses a system that alerts the operator of a vehicle, when operator is not in compliance with an intersection signal condition, where the intersection traffic signal conditions does not permit driver of vehicles to cross the intersection. The system comprises of traffic light or stop sign RF transmitter or transceiver units, and plurality of vehicles equipped with vehicle collision avoidance device containing RF transceivers to receive signals from the intersection signal transmitter units, the vehicle collision avoidance device is equipped with vehicle speed comparator CPU and vehicle travel direction sensing circuitry using a compass or GPS receiver to determine vehicle travel direction and monitor vehicle speed. A beeper, LED or vibrator is incorporated for warning the driver.

A camera image calibrating system applicable to a transportation vehicle including at least one image capturing unit, direction sensing units and a processing unit is provided. The image capturing unit is disposed on the transportation vehicle according to a height to preview an image. The direction sensing units are disposed on the transportation vehicle and the image capturing unit to obtain a vehicle directional angle and an image capturing directional angle. The processing unit calculates an image transformation relationship and causes the image to comply with an image preset condition. The processing unit determines an offset angle of the image capturing unit according to the image, the vehicle directional angle and the image capturing directional angle, and further calculates the image transformation relationship according to the height, the offset angle and the image, in a static calibration procedure. A method of calibrating camera images is also provided.

To provide a method for localizing sound image of reproducing sound outside right and left speakers, by processing and controlling audio signals which allows sound image localization outside the speakers for reproducing the controlled audio signals by means of a very concise hardware architecture. When the audio signals 1L, 1R of right and left channels recorded on fit media for stereophonic reproduction are reproduced, process to emphasize a factor of a sense of direction that listener's hearing has is applied by delaying phase characteristic of the audio signals 1L, 1R without change of frequency characteristics with increase in frequency to drive the speakers 7L , 7R of right and left channels.

The embodiment of the invention provides a positioning method and device based on an electronic map. The method comprises the steps of obtaining a location point and a first direction in the electronic map at present; searching for one or a plurality of navigation objects in a preset range in the electronic map; establishing a coordinate system according to the first direction; calculating azimuth information of the one or plurality of navigation objects relative to the location point in the coordinate system. Since the coordinate system is established by taking a user himself as a reference, the most intuitive sense of direction is provided to the user, the simplicity and convenience of positioning operation are improved, the positioning is conducted through the azimuths of the navigation objects, one or a plurality of auxiliary objects is used as a reference and the positioning accuracy and success rate are greatly improved.

The invention is applicable to the field of medical equipment, and provides gantry-type lower limb training rehabilitation equipment. The equipment comprises a height adjusting device, a weight reducing device, a pelvis supporting device, an exoskeleton device, a running platform, a rack and a control system. According to the equipment, the height suitable for a patient is adjusted through the height adjusting device, the upper body of the patient is lifted by using the weight reducing device, then the crotch of the patient is fixed on the pelvis supporting device, and the two legs of the patient are fixed on two mechanical legs of the exoskeleton device. The pelvis supporting device is driven by a weight-reducing power source to move up and down so that the patient can move up and down; the pelvis supporting device can help the patient to move at four degrees of freedom by itself; meanwhile, the arbitrary movement of the patient at six degrees of freedom is achieved through the mechanical legs and the running platform, a pelvis support is always parallel to the front-rear direction of the running platform so that the patient can move in all directions and have a clear sense of direction, the equipment helps the patient to recover the functions of the lower limbs more quickly, and the gaits are normal.

A wireless indicating apparatus solves the issues of operating freedom and the inconvenience of wireless input devices of the prior art. The present wireless indicating apparatus records the difference between a horizontal orientation, an operating cursor's position, and the difference between the vertical orientation and the operating cursor's position. Therefore, the user can use the wireless indicating apparatus freely. The wireless indicating apparatus comprises an operating unit, an orientation-sensing unit, a signal-processing unit, a wireless emitting unit and a power supply device. A computer system receives the operation signal via a wireless receiving device and controls the movement, clicking or selection of the cursor upon a screen. Therefore, the operation of the wireless indicating apparatus of the present invention is not limited to a flat surface. It increases the freedom of operation and convenience, and reduces injuries such as those caused by incorrect use of a mouse.

There are provided: a means (101a) for storing standard head related transfer functions for reference positions from a virtual listener; a means (101) for, when given information (DIR, DIST) about a virtual sound source position, forming head related transfer functions (hL(k), hR(k)) as left ear and right ear head related transfer functions by selecting one of the stored standard head related transfer functions or by selecting two or more of them and interpolating; means (102, 103) for imprinting a sense of direction and distance on the audio listening signal by using the head related transfer functions thus obtained; and means (104, 105) for correcting a distance related to the obtained head related transfer functions and the sense of distance to the virtual sound source position, in the audio listening signals (sL(n), sR(n)) given the sense of direction and distance or the source audio listening signal (s(n)). A highly precise sense of distance can be provided in a small structure.

The invention relates to the technical field of information, and particularly relates to an augmented reality interaction system based on a dynamic triggering source. The augmented reality interaction system comprises a triggering area, a projector, a first mobile terminal and a plurality of second mobile terminals, wherein the triggering area is horizontally arranged on the ground; the projector is arranged above the triggering area and the projection camera of the projector faces to the triggering area; the projection area is positioned inside the triggering area; the first mobile terminal and the plurality of second mobile terminals surround the triggering area and are distributed in an annular manner; the first mobile terminal is connected with the projector; the plurality of second mobile terminals are respectively connected with the first mobile terminal. As the first mobile terminal and the plurality of second mobile terminals surround the triggering area and are distributed in the annular manner, and corresponding interaction information in different directions is acquired with the combination of direction information, each mobile terminal has a sense of direction, relatively rich reality attribute can be provided for a virtual object, and virtual object can be relatively real, and relatively good interaction can be achieved.