Transmitter for wheel assemblies

Patent metadata

Field	Value
Publication number	US-11724552-B2
Application number	US-201716340951-A
Country	US
Kind code	B2
Filing date	Dec 5, 2017
Priority date	Dec 5, 2017
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

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.

First claim

The invention claimed is:

1. A transmitter 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, and configured to receive power from a battery, the transmitter comprising:
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;
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; and
a traveling detecting section, which detects traveling and stopping of the vehicle,
wherein the controlling section is configured to
execute an accumulation process to accumulate reception time of the unmodulated wave from a starting point in time,
shift into a restriction state to restrict a response to the unmodulated wave when the accumulated reception time reaches a predetermined time, and
execute the accumulation process when the vehicle is at a stopped state, and wherein the controlling section is configured to execute, based on detection of stopping of the vehicle by the traveling detecting section, transition to a response state, in which response to the unmodulated wave is not restricted, and setting of the starting point in time.

2. A transmitter 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, and configured to receive power from a battery, the transmitter comprising:
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;
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; and
a traveling detecting section, which detects traveling and stopping of the vehicle,
wherein the controlling section is configured to
execute an accumulation process to accumulate a number of times of the signal transmitted from the transmitting section from a starting point in time in response to the unmodulated wave,
shift into a restriction state to restrict a response to the unmodulated wave when the accumulated number of times reaches a predetermined number of times, and
execute the accumulation process when the vehicle is at a stopped state, and wherein the controlling section is configured to execute, based on detection of stopping of the vehicle by the traveling detecting section, transition to a response state, in which response to the unmodulated wave is not restricted, and setting of the starting point in time.

3. The transmitter according to claim 1 , wherein
the trigger receiving section is capable of receiving a trigger signal of a modulated wave, and
the controlling section is configured to execute, based on reception of the trigger signal of a modulated wave by the trigger receiving section, transition to a response state, in which response to the unmodulated wave is not restricted.

4. The transmitter according to claim 1 , wherein
the condition detecting section includes a pressure sensor that detects a pressure of the tire, and
the controlling section is configured to execute, based on a condition in which a fluctuation value per unit time of a pressure detected by the pressure sensor exceeds a predetermined value, transition to a response state, in which response to the unmodulated wave is not restricted.

5. The transmitter according to claim 2 , wherein
the trigger receiving section is capable of receiving a trigger signal of a modulated wave, and
the controlling section is configured to execute, based on reception of the trigger signal of a modulated wave by the trigger receiving section, transition to a response state, in which response to the unmodulated wave is not restricted.

6. The transmitter according to claim 2 , wherein
the condition detecting section includes a pressure sensor that detects a pressure of the tire, and
the controlling section is configured to execute, based on a condition in which a fluctuation value per unit time of a pressure detected by the pressure sensor exceeds a predetermined value, transition to a response state, in which response to the unmodulated wave is not restricted.

Assignees

• Taiheiyo Kogyo Kk

Inventors

• Tsujita Yasuhisa

Classifications

• B60C23/0408 Primary

  transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver · CPC title

• G08B21/182

  Level alarms, e.g. alarms responsive to variables exceeding a threshold · CPC title

• B60C23/0461 Primary

  externally triggered, e.g. by wireless request signal, magnet or manual switch · CPC title

• B60C23/045

  Means for detecting electromagnetic field changes being not part of the signal transmission per se, e.g. strength, direction, propagation or masking · CPC title

• B60C23/0479

  Communicating with external units being not part of the vehicle, e.g. tools for diagnostic, mobile phones, electronic keys or service stations · CPC title