According to certain examples, a circuit-based wireless communications system provides secure access to a vehicle by way of certain circuitry configure to compare a first RF background observed for a vehicle-located RF receiver that is part of a vehicle-located circuit secured to a vehicle, with a second RF background observed for a wireless-communications vehicle-access circuit that includes another RF receiver. In response, a distance metric is generated to indicate a degree of similarity between the first RF background and the second RF background, and based on whether this metric satisfies a threshold, access to the vehicle may be granted via the wireless-communications vehicle-access circuit.

A portable device includes a reception antenna and a strength meter. The reception antenna includes antennas of three axes each receiving a first signal and a second signal. The strength meter measures a reception strength of the request signal and the request signal received by each of the three axes of the LF receiver. A relay attack determination device is provided with a comparator that executes a comparative process of strength ratios of the request signal and the request signal based upon a measurement value of the reception strength. In a case where the three axes include an ineffective axis, in which the measurement value of the reception strength of the request signal or the request signal deviates from a usable range, the comparator excludes the ineffective axis and executes the comparative process.

An alert system outputs one or more alerts about an occupant being left in a vehicle. The alert system includes an in-vehicle object detector and an alert controller. The in-vehicle object detector detects objects in a vehicle compartment, including the occupant. If the occupant is left in the compartment after a driver has left the vehicle, the alert controller controls outputting of the one or more alerts to mobile terminals of persons including the driver. If the driver has left the vehicle, the alert controller causes the in-vehicle object detector to begin a detection processing for detecting the occupant being left in the compartment. If the occupant is left in the compartment, the alert controller determines whether the mobile terminal of the driver is left in the compartment. The alert controller switches outputting of the one or more alerts to among the mobile terminals of the persons in accordance with whether the mobile terminal of the driver is left in the compartment.

A method/system of detecting if a relay is present in a vehicle PEPS system, including transmitting from antenna(s) of a vehicle, a first/second LF signals and determining a minimum time-gap between the signal transmissions so that the time-gap exceeds the channel-coherence-time of a high-frequency wireless-relay. A maximum time between the signals is determined by a timing requirement of the PEPS system and the maximum allowable change in a key-fob position. A time gap between the minimum/maximum times is determined. Depending on the time-gap, the system timing requirement is increased to provide a predetermined-time. At the predetermined-time, separately transmitting between the first/second LF signals, which have a known signal ratio, from a vehicle antenna to a key-fob as part of an LF challenge; measuring, at the key-fob, the signal-levels of the first/second LF signals; and determining if the ratio of the first/second LF signals are within a predefined range.

Disclosed are a vehicle access system and method with at least two sets of a receiver and a transmitter, each set configured to receive a type of wireless communication signal from a corresponding transmitter of a user device, and the type of wireless communication signal received by a set is different from that received by at least another set; a signal module communicating with each set, each signal module configured to process the wireless communication signals received from the set to determine an initial location of the user device relative to the vehicle; a localization module communicating with the signal modules and configured to determine a final location of the user device relative to the vehicle, based on the initial locations determined by the signal modules; and a controller configured to lock or unlock a door of the vehicle based on the determined final location of the user device.

The present invention provides technique capable of reducing the number of devices mounted on a moving object.

Provided is a control device including a communication control unit that controls transmission of a first signal from a communication device, the first signal being used in a first measurement method among a plurality of measurement methods of measuring a distance between an object and the communication device as a distance measurement value, wherein the communication control unit controls transmission of a second signal from the communication device, the second signal being used in a second measurement method different from the first measurement method among the plurality of measurement methods, on the basis of a change in a position of a first object present outside a cabin of a moving object on which the communication device is mounted being detected according to the first measurement method.

A smart key system of a vehicle that notifies a user that a fob battery needs to be replaced, including a fob configured to transmit information that the battery needs to be replaced to an in-vehicle communication module configured to transmit the information to an identification authentication unit (IAU); and the IAU configured to transmit the information to an integrated body unit (IBU) configured to notify a user of the information. A smart key system includes: a fob configured to transmit failure information to a BLE module when UWB communication fails due to battery voltage drop; the BLE module configured to receive the failure information, and measure a distance for positioning the fob using a BLE signal; and an IBU configured to transmit an operation signal to a controller configured to control at least one function among vehicle door opening and closing, vehicle start, remote parking, and vehicle door locking.

Disclosed herein is a vehicle theft prevention device. The device can include a data store including event configuration data. The device can include one or more sensors that can sense various types of measurements proximate to a vehicle. The device can include a computing device in communication with the sensors. The computing device can read measurements from the sensors and determine that a particular event has occurred. The computing device can analyze the measurements to determine the particular event occurred based on the event configuration data. When the particular event occurs, the computing device can perform one or more remedial actions.

An arrangement for operating one or more windows (S1-S4, SF, SH), which are installed in a vehicle (FZ) and in particular delimit a passenger compartment (FGZ) and whose optical properties can be changed by electrical actuation, comprises a position-determining device (ZGA) for determining the position (P1-P3) of an object (IDG1) which is located outside the vehicle (FZ). In addition, the arrangement has a control device (STG, AST) which is configured to actuate the one or more windows (S1-S4, SF, SH) as a function of the position, determined by the position-determining device, and in particular the distance.

Smart vehicle parking apparatus and related methods are disclosed herein. An example system includes a processor to reserve a personal vehicle for a time interval. The personal vehicle is to park at a location during the time interval. The processor is also to match a vehicle use option to the personal vehicle based on the time interval and the location. The vehicle use option is associated with a person to use the personal vehicle during the time interval.