A system and method for performing an operation at a vehicle is disclosed. The system includes a first acoustic transceiver that transmits and receives inaudible acoustic signals and a second acoustic transceiver that transmits and receives inaudible acoustic signals. The second acoustic transceiver is stationary with respect to the vehicle. A processor receive an inaudible acoustic signal transmitted between the first acoustic transceiver and the second acoustic transceiver, determines a location of the first acoustic transceiver with respect to the vehicle from the received signal, and performs an operation at the vehicle based on the location of the first acoustic transceiver with respect to the vehicle.

The invention relates to a device for monitoring a motor vehicle, in particular a motorcycle (2), configured to be connected to an interface (3) of the motor vehicle (2), the device comprising:—a processor (1a) associated with a memory (1b),—a geolocation module (1c),—a vibration detection module (1d) and/or a fall detection module (1f),—a mobile application module (1g) for exchanging information on the vehicle with a mobile application server (4),—a silent alert module (1i) via the mobile application server (4) according to vibration detection module data (1d) or fall detection module data (1f), characterized by:—a mobile internet network connection module (1i),—an audible alarm (5), and in that the mobile application module (1g) is configured to remotely control the audible alarm (5).

A UHF communication method for activating a motor vehicle function with a portable item of user equipment, based on the presence of the portable item of equipment in predetermined areas around the vehicle. The portable item transmitting a first signaling event at a predetermined period on at least one signaling channel. The first event including at least one signaling frame having a data block. The method including: a predetermined number of additional signaling events transmitted to the vehicle during the period; a request signal received from the vehicle, for each signaling frame of each event received by the vehicle; sending a response frame upon receipt of the request signal by the portable item; determining the presence of the portable item in one of the predetermined areas based on the strength values of the received signal; activating a vehicle function based on the determined presence of the portable item of equipment.

A method for connecting a Bluetooth key to a vehicle, a vehicle Bluetooth system, and a Bluetooth key, comprises: when a mobile terminal enters a preset distance range of a vehicle, a Bluetooth master module of the vehicle performs authentication and connection with a Bluetooth key of the mobile terminal according to preset key information (S11); after the Bluetooth master module is successfully connected to the Bluetooth key, the Bluetooth master module generates an original random code and encrypts the original random code to obtain an encrypted random code (S12); the Bluetooth master module sends the original random code to a Bluetooth slave module, and sends the encrypted random code to the Bluetooth key (S13); and the Bluetooth slave module and the Bluetooth key perform bidirectional authentication according to the encrypted random code and the original random code, and when bidirectional authentication succeeds, the connection is established (S14).

An authentication control includes a connection authentication and an operation authentication for an authentication target device using a mobile terminal and a communication device that receives a signal from the mobile terminal toward the authentication target device. Information received by a reception unit in the mobile terminal and information detected by a state sensor for detecting a state of the mobile terminal are acquired. A connection response signal is transmitted from a transmission unit in the mobile terminal when the state of the mobile terminal satisfies a permission condition. A state determination for determining the state of the mobile terminal is performed after the reception unit receives the connection request signal.

A system comprising a radar device and a mobile device. The radar device may be configured to operate when a vehicle is turned off, detect a presence of a person in the vehicle, determine an age range of the person detected and generate an alert signal in response to a presence signal and determining that the age range of the person detected corresponds to a child. The mobile device may be configured to communicate the presence signal to the radar device and determine a movement of the mobile device. The radar device may determine a distance of the mobile device from the vehicle in response to the presence signal. The radar device may suppress the alert signal when the distance of the mobile device is within a predetermined range of the vehicle and the mobile device is moving.

An access system for a vehicle includes a receiver and an access module. The receiver is configured to receive a signal transmitted from a portable access device to the vehicle. The access module is configured to: generate a differentiated signal based on the received signal; up-sample the differentiated signal to generate a first up-sampled signal; obtain or generate an expected signal; up-sample the expected signal to generate a second up-sampled signal; cross-correlate the first up-sampled signal and the second up-sampled signal to generate a cross-correlation signal; based on the cross-correlation signal, determine a phase difference between the first up-sampled signal and the second up-sampled signal; determine a round trip time of the signal received by the receiver; and permit access to the vehicle based on the round trip time.

In general, aspects of this disclosure are directed towards techniques for using a computing device to perform the functionality of a vehicle key, so that the computing device may be used to automatically unlock the doors of a vehicle and/or to activate a previously-deactivated keyless ignition system. The computing device may be associated with a vehicle, including sending an identifier associated with the computing device to the vehicle via short-range communication. The computing device may also send to the vehicle, via short-range communication, at least one unlock door signal including an access code verifiable by the vehicle, and wherein receipt of the at least one unlock door signal by the vehicle enables the vehicle to unlock one or more of its doors without further user intervention.

Disclosed is an access device of a vehicle having an on-vehicle control device configured to transmit enquiry signals to a mobile identification transmitter to determine the state of motion thereof, and adapt the transmission of the enquiry signals for a response signal received from the mobile identification transmitter containing the state of motion of the mobile identification transmitter, or on the basis of the absence of the response signal. Energy is saved in the event of a response signal containing a communicated stationary state of the mobile identification transmitter or in the absence of a response signal by reducing the frequency of the transmission of the enquiry signals.

This disclosure relates to an access control method for a motor vehicle. The motor vehicle includes a plurality of access elements, which are automatically moveable between a closed position and an open position. Depending on the at least one detected position of the key element, a prediction is made of which of the plurality of access elements the user is likely to use. This access element is automatically opened. If the prediction turns out to be incorrect, the corresponding one of the plurality of access elements for which the use was originally predicted is returned back from the open position to the closed position. This disclosure further relates to an access control system for a motor vehicle.