Pairing information signals are transmitted for a selected period of time after the transceiver powers up. Generally identical heartbeat signals are transmitted by the transceiver for a longer period of time than the pairing information signals. When the monitor receives the pairing information, it will connect to the transceiver; however, if the monitor does not receive a selected number, e.g. 3, of heartbeat signals, it will disconnect from the transceiver and enter a standby mode, whereupon if the required heartbeats are received, the monitor will connect to the transceiver emitting them. Once connected in this manner, the monitor is able to process the tire sensor data relayed by the transceiver.

Method and apparatus are disclosed for localizing vehicle TPMS sensors. An example vehicle includes a plurality of TPMS sensors, a communication module, and a processor. The processor is configured for receiving, from a mobile device communicatively coupled to the communication module, a localization request comprising a tire location. The processor is also configured for transmitting wakeup requests to the plurality of TPMS sensors. And the processor is further configured for, responsive to determining signal strength values between each of the plurality of TPMS sensors and the mobile device, associating a selected TPMS sensor with the tire location.

A tire pressure detector with protection shell is applied to a wheel. The wheel has a rim having an air tap and a tire mounted around the rim, with an air pressure space formed between the tire and the rim. The tire pressure detector includes a shell and a detector body. The shell is movably disposed in the air pressure space, and the detector body is disposed in a housing space of the shell. The detector body is includes a detection module for detecting the air pressure in the air pressure space, generating a pressure signal, and wirelessly transmitting the pressure signal. Therefore, by improving the structural strength of the tire pressure detector with the shell, the tire pressure detector is conveniently installed without the need of other additional tools.

A portable electronic device and method therein for locating tire sensors on a vehicle is provided. The portable electronic device comprises a camera and RFID circuitry. The portable electronic device determines the tire location of each tire on the vehicle using image recognition on image data from the camera. The portable electronic device also detects one or more tire sensors of each tire via the RFID circuitry as the portable electronic device sequentially guides a user of the portable electronic device via a user interface to motion the portable electronic device in proximity of each tire at each determined tire location. Further, the portable electronic device also identifies each of the one or more detected tire sensors on the vehicle.

Electronic equipment for use in checking the air pressure of the tires of a motor vehicle and communicating information to an on-board computer of the motor vehicle is disclosed. The equipment includes a device including an internal pressure sensor and a connection means for connecting the device to a valve of a tire to place the internal pressure sensor in communication with the internal air pressure of the tire. In one example, the electronic equipment includes a device having a first case, and the internal air pressure sensor is in a separate second case including the connection means to connect the second case to the valve of the tire. The internal air pressure sensor in the second case is configured to be in communication with the components in the first case of the device.

A tyre sensor device including a connecting element for connecting the tyre sensor device to a vehicle tyre, and a tyre sensor device electronics assembly housed in the connecting element, wherein the tyre sensor device electronics assembly comprises a flexible printed circuit board being foldable and including at least two printed circuit board portions each having two surfaces, the at least two printed circuit board portions being suitable for the placement, on at least one surface thereof, of electronic components of the tyre sensor device, wherein the electronic components include at least one sensor for sensing at least one tyre parameter, the printed circuit board being folded so that the tyre sensor device electronics assembly can be inserted in the connecting element with the at least two printed circuit board portions being essentially planar.

A tire pressure monitoring system (TPMS) includes a plurality of beacon transmitters each provided at different locations and each configured to transmit a plurality of beacons; a first TPMS sensor module configured to receive the plurality of beacons from each of the plurality of beacon transmitters, measure a signal strength of each of the plurality of beacons from each of the plurality of beacon transmitters, and transmit a signal including a first signal strength value for each of the plurality of beacon transmitters, each first signal strength value being representative of the measured signal strength of one or more of the plurality of beacons from a corresponding beacon transmitter of the plurality of beacon transmitters; and a control unit configured to receive the signal and determine a location of the first TPMS sensor module based on the first signal strength value for each of the plurality of beacon transmitters.

A radiofrequency transponder includes a radiating antenna and an electronic device. The radiating antenna is a single-strand helical spring forming a dipole antenna. The electronic device includes an electronic chip and a primary antenna, which are encapsulated at least partially in a rigid, electrically insulating mass. The primary antenna is electromagnetically coupled to the radiating antenna.

A valve stem structure disposed at a rim of a tire of a vehicle for connecting to an electronic tire pressure monitoring device in the tire is provided. The valve stem structure includes a tube, an air core, and a conducting wire. The tube has a first inlet, a first outlet communicating with an inner space of the tire, and a second outlet. The air core is switchably disposed at the first inlet, and a compressed air is injected into the tire via the first inlet and the first outlet by switching the air core. The conducting wire is disposed in the tube, and an end of the conducting wire extends out of the tube via the second outlet to be electrically connected to the electronic tire pressure monitoring device. A power source charges the electronic tire pressure monitoring device via the conducting wire.

A trailer diagnostic and monitoring system includes a system controller having a controller body, and a power unit for engage a wiring harness of the trailer. A location identification unit and wireless communication device are positioned within the controller body, and a plurality of hub sensor assemblies are positioned along the axle hubs of the trailer. Each of the assemblies including functionality for monitoring and reporting the temperature of a respective axle hub, and the pressure of the trailer tire secured to the respective axle hub. A process specific serial forwarder device communicatively links each of the hub sensor assemblies to the system controller. A trailer diagnostic and monitoring application for execution on a remote computing device includes functionality for communicating with the wireless communication device to receive trailer location information, tire pressure readings and axle hub temperatures.