The disclosure relates to a method for requesting and granting priority between a host vehicle and other vehicles, and to a system which implements the method. The host vehicle, through the use of on-board vehicle sensors, detects and identifies an impeding vehicle which interferes with the host vehicle's path. The host vehicle transmits a priority request to the impeding vehicle. The priority request includes a remuneration offer. The impeding vehicle evaluates the priority request, including the sufficiency of the host vehicle's remuneration offer, and grants or denies the host vehicle's priority request. If granted, the impeding vehicle modifies its path to be less impeding to the host vehicle, for example by assuming a cooperative path that lets the host vehicle pass the impeding vehicle.

The disclosure relates to a method for requesting and granting priority between a host vehicle and other vehicles, and to a system which implements the method. The host vehicle, through the use of on-board vehicle sensors, detects and identifies an impeding vehicle which interferes with the host vehicle's path. The host vehicle transmits a priority request to the impeding vehicle. The priority request includes a remuneration offer. The impeding vehicle evaluates the priority request, including the sufficiency of the host vehicle's remuneration offer, and grants or denies the host vehicle's priority request. If granted, the impeding vehicle modifies its path to be less impeding to the host vehicle, for example by assuming a cooperative path that lets the host vehicle pass the impeding vehicle.

A system for human interaction with virtual objects comprises: a touch sensitive surface, configured to detect a position of a contact made on the touch sensitive surface; a reference layer rigidly attached to the touch sensitive surface and comprising one or more patterns; a display device, configured to display a virtual object that is registered in a reference coordinate fixed with respect to the touch sensitive surface; one or more image sensors rigidly attached to the display device, configured to capture an image of at least a portion of the one or more patterns; and at least one processor, configured to determine a position and an orientation of the display device with respect to the touch sensitive surface based on the captured image, and identify an interaction with the virtual object based on the detected position of the contact made on the touch sensitive surface.

A method and system for detecting a position of an animal in laboratory conditions based on ultrasonic tracking is disclosed. The animal has an attached mobile device comprising an ultrasonic receiver. Ultrasonic signals emitted from ultrasonic emitters either have an envelope with a shape that is chosen with the first derivative restricted by condition |dE/dt|<A/T and/or with the second derivative restricted by condition |d.sup.2E/dt.sup.2|<A/T.sup.2, wherein E(t) is the envelope curve, t is time, A is the maximum amplitude of the ultrasonic signals and T is the period of the base frequency of the ultrasonic signals; or oscillations of voltage or current of ultrasonic emitters during signal transmission have envelopes described by a special function for amplitude of the oscillations. The mobile device receives an optical or radio synchronization signals from signal sources connected with the ultrasonic emitters. Analog or digital filters are used to separate ultrasonic signals from animal's vocalization. In some embodiments coordinates are obtained by using optical scanning sources with ultrasonic emitter placed at the axes of rotation of one or two emitted rotating planar scanning light beams. Tracking for multiple animals is disclosed.

A method and system for detecting a position of an animal in laboratory conditions based on ultrasonic tracking is disclosed. The animal has an attached mobile device comprising an ultrasonic receiver. Ultrasonic signals emitted from ultrasonic emitters either have an envelope with a shape that is chosen with the first derivative restricted by condition |dE/dt|<A/T and/or with the second derivative restricted by condition |d.sup.2E/dt.sup.2|<A/T.sup.2, wherein E(t) is the envelope curve, t is time, A is the maximum amplitude of the ultrasonic signals and T is the period of the base frequency of the ultrasonic signals; or oscillations of voltage or current of ultrasonic emitters during signal transmission have envelopes described by a special function for amplitude of the oscillations. The mobile device receives an optical or radio synchronization signals from signal sources connected with the ultrasonic emitters. Analog or digital filters are used to separate ultrasonic signals from animal's vocalization. In some embodiments coordinates are obtained by using optical scanning sources with ultrasonic emitter placed at the axes of rotation of one or two emitted rotating planar scanning light beams. Tracking for multiple animals is disclosed.

A method for determining a change in a distance, a location prompting method and an apparatus and a system thereof are provided. The method includes: sending, by a receiving terminal, a paring request to a server for the server to forward the paring request to a transmitting terminal, and to allocate a frequency band for the receiving terminal and the transmitting terminal after the transmitting terminal accepts the paring request; acquiring, by the receiving terminal, an acoustic wave signal of a frequency sent by the transmitting terminal, wherein the frequency is determined by the transmitting terminal based on the allocated frequency band; determining, by the receiving terminal, a change in the acquired acoustic wave signal; and determining, by the receiving terminal, a change in a distance between the transmitting terminal and the receiving terminal according to the change in the acquired acoustic wave signal.

A method for determining a change in a distance, a location prompting method and an apparatus and a system thereof are provided. The method includes: sending, by a receiving terminal, a paring request to a server for the server to forward the paring request to a transmitting terminal, and to allocate a frequency band for the receiving terminal and the transmitting terminal after the transmitting terminal accepts the paring request; acquiring, by the receiving terminal, an acoustic wave signal of a frequency sent by the transmitting terminal, wherein the frequency is determined by the transmitting terminal based on the allocated frequency band; determining, by the receiving terminal, a change in the acquired acoustic wave signal; and determining, by the receiving terminal, a change in a distance between the transmitting terminal and the receiving terminal according to the change in the acquired acoustic wave signal.

An acoustic location determination system is disclosed. The system includes one or more transmitting devices and one or more mobile devices. The transmitting device includes a first transducer configured to transmit first acoustic signals having a first frequency, and a second transducer configured to transmit second acoustic signals having a second frequency. The transmitting device further includes a beacon device configured to transmit beacon data via a short-range wireless communication technique. The transmitting device further includes one or more control devices configured to select the first or second acoustic signals based at least in part on one or more operating capabilities of one or more mobile units associated with the real-time locating system. The one or more control devices are further configured to cause transmission of the selected acoustic signals and the beacon data.

An acoustic location determination system is disclosed. The system includes one or more transmitting devices and one or more mobile devices. The transmitting device includes a first transducer configured to transmit first acoustic signals having a first frequency, and a second transducer configured to transmit second acoustic signals having a second frequency. The transmitting device further includes a beacon device configured to transmit beacon data via a short-range wireless communication technique. The transmitting device further includes one or more control devices configured to select the first or second acoustic signals based at least in part on one or more operating capabilities of one or more mobile units associated with the real-time locating system. The one or more control devices are further configured to cause transmission of the selected acoustic signals and the beacon data.

Systems and methods for determining a time difference are provided in the present disclosure. The systems includes a first base station configured to receive a first signal transmitted from a terminal and receive a second signal from a second base station. The systems may also include the second base station configured to receive the first signal transmitted from the terminal, and transmit the second signal after receiving the first signal. The systems may further include at least one processor configured to determine a time duration between the first base station receiving the first signal and receiving the second signal and determine the time difference between a first time period of the first signal transmitted from the terminal to the first base station and a second time period of the first signal transmitted from the terminal to the second base station based on a third time period and the time duration.