Abstract: A parasitic element is used in a transmitter configured to transmit data. The transmitter includes a loop antenna to which power is supplied and a housing that accommodates the loop antenna. The parasitic element is disposed to be located outside the housing. The parasitic element includes a loop portion that is a part of the parasitic element, and an extended section that is a part other than the loop portion. The loop portion is electromagnetically coupled to the loop antenna. The extended section includes a first end of the parasitic element as an open end.

Abstract: A transmitter is configured to be integrated with a tire valve attached to a wheel. The transmitter includes a data generating unit, a transmitting unit, and a controlling unit. The data generating unit is configured to generate transmission data. The transmitting unit is configured to transmit the transmission data to a receiver that includes a setting unit that sets a threshold related to control of a vehicle in accordance with a type of the wheel. The controlling unit causes the transmitting unit to transmit the transmission data. The transmission data includes wheel identification information. The wheel identification information is required by the setting unit when setting the threshold and allows the setting unit to recognize the type of the wheel to which the tire valve is attached.

Abstract: A power supply device includes: a generator including a stator which rotates with a tire wheel, and a rotor which rotates around a rotation axis of the tire wheel; an inertial component fixed to the rotor and configured to maintain a consistent attitude by an own weight of the inertial component; a circuit board fixed to the tire wheel and arranged such that a plate thickness direction is oriented parallel to the rotation axis; a rectifier circuit mounted on the circuit board and rectifies a current output from the generator to supply the current to a load; a plurality of smoothing capacitors provided in the rectifier circuit and positioned on a common imaginary circle around the rotation axis so that the plurality of smoothing capacitors as a whole has a center of gravity located in a central area of rotation.

Abstract: The transmitter is arranged in a tire attached to a wheel and configured to transmit data to a receiver. The transmitter includes an obtaining section configured to obtain a detection result of the sensor, a generating section configured to generate the data including the detection result of the sensor, a transmitting section configured to transmit the data generated by the generating section, and an organic power generation element that is a power source of the transmitter. The organic power generation element is configured to generate power through a chemical reaction with organic matter contained in a fuel solution accommodated in the tire.

Abstract: A transmitter is configured to be attached to each of wheel assemblies provided in a vehicle and execute a process in accordance with a command included in a trigger signal transmitted from a trigger device. The transmitter includes a battery, a condition detecting section, which detects a condition of the transmitter, a trigger receiving section, which receives, as the trigger signal, an unmodulated wave having a received signal strength indication greater than or equal to a predetermined received signal strength indication, a transmitting section, which transmits a signal, a controlling section, which performs response transmission, by which the signal is transmitted to the transmitting section in response to the unmodulated wave, when the trigger receiving section receives the unmodulated wave, and a memory section, which stores at least one of reception time of the unmodulated wave and a number of times of the response transmission.

Abstract: A transmitter arranged in a tire includes a transmitting section, which has a terminal, and a pressure switch. The pressure switch includes a hollow box and a passage that causes an interior of the box and an interior of the tire to communicate with each other. The box includes a conductive deforming portion, which is separate from the terminal when the difference between the pressure in the box and the pressure in the tire is less than a predetermined value and is elastically deformed to contact the terminal when the pressure in the box is higher than the pressure in the tire at least by the predetermined value. The transmitting section transmits a warning signal that causes a tire pressure warning device to issue a warning in response to contact between the deforming portion and the terminal.

Abstract: A transmitter is configured to be attached to each of wheel assemblies in a vehicle and execute a process in accordance with a command included in a trigger signal. The transmitter includes a condition detecting section, a trigger receiving section which receives, as the trigger signal, an unmodulated wave having a received signal strength indication a transmitting section, and a controlling section. When the trigger receiving section receives the unmodulated wave, the controlling section causes the transmitting section to transmit the signal in response to the unmodulated wave. The controlling section is configured to execute an accumulation process to accumulate reception time of the unmodulated wave from a starting point in time, and shift into a restriction state to restrict a response to the unmodulated wave when the accumulated reception time reaches a predetermined time.

Abstract: The transmitter is arranged in a tire attached to a wheel and configured to transmit data to a receiver. The transmitter includes an obtaining section configured to obtain a detection result of the sensor, a generating section configured to generate the data including the detection result of the sensor, a transmitting section configured to transmit the data generated by the generating section, and an organic power generation element that is a power source of the transmitter. The organic power generation element is configured to generate power through a chemical reaction with organic matter contained in a fuel solution accommodated in the tire.

Abstract: A power feeding device includes: a generator, the generator including a stator fixed to a wheel and a cylindrical rotor that rotates around a rotation axis of the wheel; an inertial member that is fixed to the cylindrical rotor and maintains a constant attitude by its own weight; a circuit board that is fixed to the stator and is mounted with a power feeding circuit to supply an output of the generator to a load; and a circuit receiving space that is provided inside the cylindrical rotor and receives a whole of the circuit board or an element that is mounted on the circuit board and protrudes from the circuit board.

Abstract: A transmitter is configured to be attached to each of wheel assemblies provided in a vehicle and execute a process in accordance with a command included in a trigger signal. The transmitter includes a battery, which serves as a power source for the transmitter, a condition detecting section, which is configured to detect a condition of a tire, a trigger receiving section, which is configured to receive, as the trigger signal, an unmodulated wave having a received signal strength indication greater than or equal to a predetermined received signal strength indication, a transmitting section, which is configured to transmit a signal, and a controlling section, which is configured such that, when the trigger receiving section receives the unmodulated wave, the controlling section causes the transmitting section to transmit the signal in response to the unmodulated wave.

Abstract: A transmitter is configured to be attached to a tire valve and transmit a data signal to a receiver. The transmitter includes a trigger receiving unit configured to receive a trigger signal transmitted from an ID registration device, the trigger signal containing a command to the transmitter, a specification storage unit configured to store multiple types of specifications, an ID storing unit configured such that an ID code contained in the trigger signal received by the trigger receiving unit is written into the ID storing unit, a linking information storing unit configured to store linking information that links each of the specifications and ID codes to each other, and a controlling unit configured to cause, based on the linking information, the transmitter to operate in accordance with the specification, which is linked to the ID code stored in the ID storing unit.

Abstract: A transmitter is configured to be integrated with a tire valve attached to a wheel. The transmitter includes a data generating unit, a transmitting unit, and a controlling unit. The data generating unit is configured to generate transmission data. The transmitting unit is configured to transmit the transmission data to a receiver that includes a setting unit that sets a threshold related to control of a vehicle in accordance with a type of the wheel. The controlling unit causes the transmitting unit to transmit the transmission data. The transmission data includes wheel identification information. The wheel identification information is required by the setting unit when setting the threshold and allows the setting unit to recognize the type of the wheel to which the tire valve is attached.

Abstract: A transmitter includes a data generating unit configured to generate transmission data, a transmitting unit configured to transmit the transmission data to a receiver that includes a setting unit that sets a threshold for controlling a vehicle in accordance with the type of the tire valve, and a controlling unit that causes the transmitting unit to transmit the transmission data. The transmission data is information with which the setting unit sets the threshold. The transmission data includes valve identification information for causing the setting unit to recognize the type of the tire valve to which the transmitter is attached.

Abstract: A vehicle has a detecting section that detects, as a detection value, a rotational angle of each wheel assembly. A transmitter provided in each wheel assembly transmits transmission data when the rotational angle of the wheel assembly is any of specific angles. At the performance of transmission at the specific angle, the transmitter changes data that is different from angular data indicating the rotational angle of the wheel assembly and is included in the transmission data in accordance with the specific angle. A vehicle-mounted receiver collects the detection values detected by the detecting section upon reception of the transmission data. The receiver collects the detection values for each piece of the transmission data transmitted at the same specific angle based on a manner in which data included in the received transmission data is changed in accordance with the specific angle.

Abstract: A fuel solution introducing method introduces a fuel solution into a tire. The tire includes a transmitter configured to transmit data that includes a detection result detected by a sensor to a receiver. The transmitter is operated with, as a power source, an organic power generation element configured to generate power through a chemical reaction with organic matter contained in the fuel solution. The fuel solution introducing method includes introducing the fuel solution and gas into the tire from a tire valve arranged on a wheel to which the tire is attached.

Abstract: A transmitter is attached to each of wheel assemblies of a vehicle and transmits transmission data to a receiver. The transmitter includes a nonvolatile memory that stores multiple types of protocols, a volatile memory that stores selection information, and a transmitting unit. The selection information represents a protocol that is selected from the multiple types of protocols stored in the nonvolatile memory and corresponds to the receiver. The transmitting unit transmits transmission data conforming to a protocol. The transmitting unit transmits the transmission data conforming to the protocol represented by the selection information when the selection information is stored in the volatile memory. Also, the transmitting unit transmits the transmission data conforming to all the protocols stored in the nonvolatile memory when the selection information is not stored in the volatile memory.

Abstract: A transmitter is configured to be attached to each of wheel assemblies provided in a vehicle and execute a process in accordance with a command included in a trigger signal transmitted from a trigger device.

Abstract: A transmitter is adapted to be arranged in a tire to cause a tire pressure warning device to issue a warning. The transmitter includes a transmitting section, which has a terminal, and a pressure switch. The pressure switch includes a hollow box and a passage that causes an interior of the box and an interior of the tire to communicate with each other. The box includes a conductive deforming portion, which is configured to be separate from the terminal when the difference between the pressure in the box and the pressure in the tire is less than a predetermined value and to be elastically deformed to contact the terminal of the transmitting section when the pressure in the box is higher than the pressure in the tire at least by the predetermined value. The transmitting section transmits a warning signal that causes the tire pressure warning device to issue a warning in response to contact between the deforming portion and the terminal.

Abstract: A tire condition monitoring system includes transmitters that are respectively attached to wheel assemblies of a vehicle. Each transmitter includes a power source, a data generating section, a storage section that stores a correspondence relationship in which ranges obtained by dividing possible values of the detection value of a traveling state detecting section are respectively assigned to a plurality of specific angles set for the rotation angles of the wheel assemblies, and a transmission control section capable of performing specific angle transmission in which the transmission control section transmits the transmission data from the transmitting section when detecting that the rotation angle of the wheel assembly is any of the specific angles. When performing the specific angle transmission, the transmission control section transmits the transmission data when detecting that the rotation angle is the specific angle that corresponds to the detection value of the traveling state detecting section.

Abstract: A fuel solution introducing method introduces a fuel solution into a tire. The tire includes a transmitter configured to transmit data that includes a detection result detected by a sensor to a receiver. The transmitter is operated with, as a power source, an organic power generation element configured to generate power through a chemical reaction with organic matter contained in the fuel solution. The fuel solution introducing method includes introducing the fuel solution and gas into the tire from a tire valve arranged on a wheel to which the tire is attached.