A method for self-positioning tires and a tire pressure monitoring system are provided. The method for self-positioning tires includes: acquiring first position information detected by the first positioning circuit: acquiring second position information of each emitter respectively via corresponding second positioning circuit; and acquiring corresponding relative position information respectively between the receiver and each emitter based on the first position information of the receiver and the second position information of each emitter. In this way, compared with the method for achieving self-positioning function in the art, extra wires may not be needed and the origin wires of a vehicle may not be altered in the method of the present disclosure.

Embodiments provide a tire pressure measurement device, an integrated circuit, a printed circuit board, a method and a computer program to receive data. The tire pressure measurement device includes a first receiver configured to receive a low frequency signal using a first low frequency input of the first receiver, and a second input configured to receive a receive signal associated with a second receiver that is different from the first receiver. The tire pressure measurement device further includes a controller configured to control the first low frequency input of the first receiver and to couple the second input to the first low frequency input of the first receiver in order for the first receiver to receive the receive signal at the first low frequency input.

Provided are an in-vehicle reporting apparatus and a reporting system configured to prevent errors in reporting. The in-vehicle reporting apparatus stores a mounting position of each tire in association with identification information identifying the tire, a vehicle height acquisition unit acquires a vehicle height of the vehicle, a vehicle height determination unit determines whether the vehicle height is greater than or equal to a predetermined height, and a reporting unit reports information that depends on the mounting position of a tire stored in the storage unit in association with acquired identification information and on acquired air pressure information of the tire when the acquired vehicle height is not greater than or equal to the predetermined height, and does not report information that depends on the mounting position of the tire, when the acquired vehicle height is greater than or equal to the predetermined height.

A management computer transmits to a vehicle a request of vehicle ID to identify the vehicle, when a tire ID of the vehicle is not registered in a registration portion. Upon receiving the request, a transmission pattern adjustment section of an ECU of tire pressure monitoring system of the vehicle controls a sensor unit of at least one tire to transmit electric waves in transmission pattern expressing the vehicle ID. The management computer permits the vehicle to use a facility when a vehicle ID specified from the received transmission pattern on electric waves is registered in a registration portion.

An ECU is used to a tire pressure monitoring system of a vehicle. The ECU includes a contact storage portion and a post-replacement ID reporting section. The contact storage portion stores previously a contact of a management computer of a facility that the vehicle uses. The post-replacement ID reporting section transmits a post-replacement tire ID of a tire, which is substituted in the tire replacement, to the contact in the contact storage portion via a communication network when the tire replacement is detected by a tire replacement detection section. The management computer includes a registration change section that registers the post-replacement tire ID in a registration portion upon receiving the post-replacement tire ID.

An tire air pressure monitoring system is provided configured to reduce the information amount of signals transmitted and received by a vehicle-mounted radio device and a vehicle-mounted communication device, and prevent a processing delay and a improve reliability of air pressure information. The tire air pressure monitoring system includes an air pressure acquisition unit that acquires the air pressure of a tire, a vehicle-mounted radio device wirelessly transmits a signal regarding the air pressure acquired by the air pressure acquisition unit, and a vehicle-mounted communication device in a separate location from the vehicle-mounted radio device and receives the signal transmitted by the vehicle-mounted radio device. The vehicle-mounted radio device includes a calculation unit calculating a temporal change amount of the air pressure acquired by the air pressure acquisition unit, and a transmission unit that transmits a signal indicating the air pressure change amount calculated by the calculation unit.

A tire pressure monitoring system (TPMS) sensor and a communication method are provided. The TPMS sensor includes a microcontroller unit, a pressure sensor electrically connected to the microcontroller unit and configured to measure an internal air pressure of a tire and a receiver electrically connected to the microcontroller unit and configured to receive at least one communication signal. The receiver includes a magnetic sensor configured to detect a modulated low-frequency electromagnetic carrier signal as a first communication signal and output an encoded measurement signal based on the detected modulated low-frequency electromagnetic carrier signal. The TPMS sensor further includes a demodulator configured to convert the encoded measurement signal into a data signal and output the data signal to the microcontroller unit.

The invention relates to a method of utilizing a system for monitoring the temperature and/or the pressure of the tires of a vehicle (C) comprising one or more rolling sub-assemblies (100, 200), noteworthy in that it consists in installing on each rolling sub-assembly (100, 200), an additional storage and communication module (300) comprising: a data storage means in which are recorded, during a learning phase, the set of unique identifiers and the locations of each measurement and communication pick-up module (300) of said rolling sub-assembly (100, 200), a means of communication at least with the reception and transmission modules (400) and installed on the rolling sub-assembly, a means of storing energy for the purposes of powering the communication means, so that said storage and communication module (300) can retain in memory the set of identifiers and associated locations of the same sub-assembly (100, 200) and can communicate it instantaneously. The invention also relates to the device allowing the method to be implemented. Applications: utilization of a system for monitoring tires.

A method to facilitate secure communication between a first tire pressure monitoring system (TPMS) and a vehicle is disclosed. The method may include obtaining a trigger signal to auto-locate the first TPMS from a plurality of TPMSs. The method may further include obtaining learning mode advertisements from each TPMS responsive to obtaining the trigger signal. The learning mode advertisements may include a random value and a test value associated with each TPMS. The test value may be an encrypted value generated using TPMS keys. The method may further include calculating a vehicle test value using the random value and a vehicle pre-shared key, and comparing the test value with the vehicle test value. The method may further include auto-locating the first TPMS based on the comparison. The method may include receiving vehicle tire condition data from the first TPMS responsive to auto-locating the first TPMS.

A low-frequency emission electronic unit (20) includes two low-frequency antennas (B1, B2). The second antenna (B2) is passive and resonant, oriented along the main axis (Y) of the first low-frequency antenna (B1) and is adapted to generate two low-frequency fields (D2, D2) at right angles to the field (D1) emitted by the first antenna (B1). The low-frequency emission electronic unit (20) makes it possible to reduce the zones of rupture of reception of the low-frequency signals by the wheel unit (13) situated in proximity in which the low-frequency signals emitted by the low-frequency emission electronic unit are not received by the closest wheel unit (13). A low-frequency signal transmission method alternating the emissions of waves by the two antennas (B1, B2) is also described.