Tire condition detecting device

• US 10,556,471 B2
• Filed: 07/14/2016
• Issued: 02/11/2020
• Est. Priority Date: 07/14/2016
• Status: Active Grant

• Current Assignee: Pacific Industrial Company Limited
• Original Assignee: Pacific Industrial Company Limited
• Inventors: Tsujita, Yasuhisa, Takeyama, Takashi
• Primary Examiner(s): Pope, Daryl C
• Application Number:
  US15/533,412
• Publication Number:
  US 20190084360A1
• Time in Patent Office: 1,307 Days
• Field of Search: 340444, 340 561, 340 564, 340442
• CPC Class Codes: B60C 23/04 mounted on the wheel or tyre
• CPC Class Codes: B60C 23/0454 Means for changing operation mode, e.g. sleep mode, factory mode or energy save mode
• CPC Class Codes: B60C 23/0461 externally triggered, e.g. by wireless request signal, magnet or manual switch
• CPC Class Codes: B60C 23/0462 Structure of transmission protocol
• CPC Class Codes: B60C 23/0479 Communicating with external units being not part of the vehicle, e.g. tools for diagnostic, mobile phones, electronic keys or service stations

Abstract

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.

Claims

1. A tire condition detecting device comprising:

a battery that serves as a power source;

a condition detecting section that detects condition of a tire attached to a wheel;

a memory section that stores a plurality of protocols;

a transmission section that transmits, to a receiver, data signals containing the condition of the tire detected by a condition detecting section; and

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, wherein

among the plurality of protocols, one that is designated by a trigger device is defined as a first protocol, and one that is not designated by the trigger device is defined as a second protocol,

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, and

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 protocol in addition to the data signals using the first protocol stored in the memory section.

4. The tire condition detecting device according to claim 1, wherein

the condition detecting section includes a pressure sensor that detects an air pressure of the tire, and

the controlling section determines that there is an anomaly in the tire when an amount of decrease in the air pressure per unit time exceeds a fluctuation threshold value.

5. The tire condition detecting device according to claim 1, wherein

the condition detecting section includes a pressure sensor that detects an air pressure of the tire, and

the controlling section determines that there is an anomaly in the tire when the air pressure is less than a low pressure threshold value.

2. A tire condition detecting device comprising:

a battery that serves as a power source;

a condition detecting section that detects condition of a tire attached to a wheel;

a memory section that stores a plurality of protocols;

a transmission section that transmits, to a receiver, data signals containing the condition of the tire detected by a condition detecting section; and

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, wherein

among the plurality of protocols, one that is designated by a trigger device is defined as a first protocol, and one that is not designated by the trigger device is defined as a second protocol,

when determining that there is no anomaly in the tire, the controlling section causes the transmission section to transmit the data signals using the second protocol with a power lower than a power with which the data signals using the first protocol is transmitted, and

when determining that there is an anomaly in the tire, the controlling section sets the power with which the data signals using the second protocol is transmitted to be greater than in a case in which there is no anomaly.

6. The tire condition detecting device according to claim 2, wherein

the condition detecting section includes a pressure sensor that detects an air pressure of the tire, and

the controlling section determines that there is an anomaly in the tire when an amount of decrease in the air pressure per unit time exceeds a fluctuation threshold value.

7. The tire condition detecting device according to claim 2, wherein

the condition detecting section includes a pressure sensor that detects an air pressure of the tire, and

the controlling section determines that there is an anomaly in the tire when the air pressure is less than a low pressure threshold value.

3. A tire condition detecting device comprising:

a battery that serves as a power source;

a condition detecting section that detects condition of a tire attached to a wheel;

a memory section that stores a plurality of protocols;

a transmission section that transmits, to a receiver, data signals containing the condition of the tire detected by the condition detecting section; and

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, wherein

among the plurality of protocols, one that is designated by a trigger device is defined as a first protocol, and one that is not designated by the trigger device is defined as a second protocol,

when determining that there is no anomaly in the tire, the controlling section causes the transmission section to transmit the data signals using the second protocol less frequently than transmission of the data signals using the first protocol, and

when determining that there is an anomaly in the tire, the controlling section causes the data signals using the second protocol to be transmitted more frequently than in a case in which there is no anomaly.

8. The tire condition detecting device according to claim 3, wherein

the condition detecting section includes a pressure sensor that detects an air pressure of the tire, and

the controlling section determines that there is an anomaly in the tire when an amount of decrease in the air pressure per unit time exceeds a fluctuation threshold value.

9. The tire condition detecting device according to claim 3, wherein

the condition detecting section includes a pressure sensor that detects an air pressure of the tire, and

the controlling section determines that there is an anomaly in the tire when the air pressure is less than a low pressure threshold value.