A mobile reader for waking up a tire pressure detector by using 2.4G signal encoding includes a reader MCU electrically connected to a reader memory unit, a reader high-frequency transceiver module, a reader main controller, and a reader input/output module. The reader MCU does not include a reader low-frequency circuit or a reader low-frequency antenna. The low frequency being less than or equal to 150 KHz. A display unit is electrically connected to the reader input/output module. A keyboard is electrically connected to the reader input/output module. This invention eliminates the need for using both high-frequency antennas and low-frequency antennas simultaneously to eliminate the issue of the excessive variety of antennas used in conventional tire pressure detection systems.

A wheel unit including an environmental pressure sensor, a non-volatile memory for storing a first program and a second program and configuration code, a processing unit for executing the programs, a communication module comprising a wireless transmitter for transmitting at least one parameter indicative of conditions within a tire and a wireless or wired receiver for loading the second program into the non-volatile memory and a battery for powering the wheel unit. The second program may be loaded to the memory by the first program and configured by the configuration code to operate within a specific TPM system.

A tire air pressure detection system and a vehicle body side device to detect air pressure of a plurality of tires. The vehicle body side device causes a transmission unit to transmit to all tire side devices, a transmission stop signal instructing transition to a transmission stop state and then the transmission unit transmits a transmission standby signal at a transmission strength that enables the signal to reach the tire side devices; and then the transmission unit transmits to the one of the tire side devices, a transmission request signal requesting a transmission of a signal including a unique identifier stored in that tire side device; and when it is determined that a reception unit has received a response signal in response to the transmission request signal, the transmission unit transmits a transmission standby signal and a transmission request signal to the tire side device corresponding to the next tire.

Method and apparatus are disclosed for activation of tire pressure measurement systems. An example vehicle includes a door including a handle sensor, a tire pressure measurement system (TPMS) sensor, a communication module, a display, and a controller. The controller is to activate the TPMS sensor responsive to detecting, via the handle sensor, engagement of a handle and collect, via the communication module, a measurement from the TPMS sensor upon activation. The controller also is to present, via the display, a low-pressure alert in response to determining the measurement is less than a threshold.

The present invention provides a high-frequency triggered tire pressure detection system, comprising: a vehicle host with no vehicle low-frequency circuit or vehicle low-frequency antenna included therein; a vehicle key with no key low-frequency circuit or key low-frequency antenna included therein; and a plurality of TPMS, matching the host high-frequency transceiver module in high-frequency wireless signals, with no PMS low-frequency circuit or TPMS low-frequency antenna included therein. All of the vehicle host, the vehicle key and the TPMS do not use low-frequency circuits or low-frequency antennas. Communication between these components exclusively uses high-frequency signals. Accordingly, the present invention addresses the conventional issue of using excessively numerous types of antennas.

A method for initialising a tyre monitoring device including a wireless communication interface and tyre monitoring devices and systems using the method are disclosed. The method includes operating the tyre monitoring device in a first mode, in the first mode the tyre monitoring device is only responsive to an initialisation instruction received over the wireless communication interface from the second device; receiving an initialisation instruction over the wireless communication interface while operating in the first mode; and, responsive to the initialisation instruction, operating the tyre monitoring device in a second mode in which the tyre monitoring device is responsive to instructions received over the wireless communication interface. The first mode draws lower power than the second mode so power draw prior to initialisation, for example while storage awaiting use, is reduced.

A transmitting device for wireless transmission of measured parameters, which comprises a microcontroller controlling pulse generating means so that said pulse generating means generate at least one pulse position modulation (PPM) signal comprising information corresponding to at least one measured parameter value, wherein said pulse generating means comprise an oscillator and a power amplifier connected to said oscillator in order to amplify the pulses output from said oscillator and to output said PPM signal, and wherein said microcontroller is configured, for each pulse of said PPM signal to be generated, to activate only said oscillator for a first period of time and then to activate also said power amplifier only for a second period of time following said first period of time, said microcontroller being also configured to maintain deactivated said oscillator and said power amplifier outside the time interval defined by said first and second periods of time.

A wheel unit including an environmental pressure sensor, a non-volatile memory for storing a first program and a second program and configuration code, a processing unit for executing the programs, a communication module comprising a wireless transmitter for transmitting at least one parameter indicative of conditions within a tire and a wireless or wired receiver for loading the second program into the non-volatile memory and a battery for powering the wheel unit. The second program may be loaded to the memory by the first program and configured by the configuration code to operate within a specific TPM system.

A tire condition detecting device includes a controlling section that determines whether there is an anomaly in the tire based on the condition of the tire detected by the condition detecting section. A protocol that is designated by a trigger device is defined as a first protocol, and protocols that are not designated by the trigger device are defined as second protocols. When determining that there is no anomaly in the tire, the controlling section causes the transmission section to transmit only the data signals using the first protocol. When determining that there is an anomaly in the tire, the controlling section causes the transmission section to transmit the data signals using the second protocols in addition to the data signals using the first protocol.

Disclosed is a method for communicating measurement messages between a plurality of electronic measurement modules and an electronic control unit of a motor vehicle. The method includes the steps of measurement (E1), by a primary emitter module, of parameter values associated with the wheel in which the module is mounted, of sending (E2), by the primary emitter module, of measurement messages to a relay module, of reception (E3) by the relay module, of the measurement messages sent, of measurement (E5), by the relay module, of parameter values associated with the wheel in which the relay module is mounted and of sending (E6), by the relay module, of the measurement messages received and of its own measurements to the electronic control unit.