Method for reading data stored in an electronic device for a tyre

• US 9,489,551 B2
• Filed: 05/22/2013
• Issued: 11/08/2016
• Est. Priority Date: 05/24/2012
• Status: Active Grant

• Current Assignee: Compagnie générale des établissements Michelin
• Original Assignee: Compagnie générale des établissements Michelin, Michelin Recherche et Technique SA (Compagnie Generale DES Etablissements Michelin SCA)
• Inventors: Penot, Thierry
• Primary Examiner(s): SYED, NABIL H
• Application Number:
  US14/402,259
• Publication Number:
  US 20150205988A1
• Time in Patent Office: 1,266 Days
• US Class Current: 1/1
• CPC Class Codes: B60C 23/00 Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
• CPC Class Codes: B60C 23/0462 Structure of transmission protocol
• CPC Class Codes: G06K 7/10366 the interrogation device being adapted for miscellaneous applications

Abstract

A method is provided for reading data relating to a tire, in which the data is stored in an electronic device integrated into the tire, and in which the tire is identified by a serial number and a manufacturing week number. A storage unit of the electronic device includes a data storage zone having a storage range formed of a number of bits. The storage range is also referred to as a restricted range, and the number of bits of the restricted range is less than or equal to 38. According to the method, the data stored in the restricted range is read, and the data read from the restricted range is decoded in order to determine the serial number and the manufacturing week number of the tire.

Claims

1. A method for reading data stored in an electronic device integrated into a tyre identified by a serial number and a manufacturing week number, the device including a storage unit with a data storage zone having at least a restricted storage range formed of bits, in which a number of the bits totals to less than or equal to 38, the method comprising steps of:

reading the data stored in the restricted storage range; and

decoding the data read from the restricted storage range in order to determine the serial number and the manufacturing week number of the tyre,

wherein, in the decoding step, the data read from the restricted storage range is decoded by decomposition of a binary quantity (N) stored in the bits of the restricted storage range on a base (B) defined by a free generating family of vectors (X₀;

X₁;

. . . ;

X_n),

wherein one or more decomposition coefficients (c_i) in the base correspond to a value useable to identify one or more members of a group that includes;

a production number;

a factory, a week, a month, a year of manufacture of the tyre; and

a code used for retreading the tyre,

wherein the base (B) is a free arithmetic base, and

wherein a dimension of the free arithmetic base is 6, such that decomposition of the binary quantity (N) stored in the restricted storage range provides six coefficients (c₀;

c₁;

c₂;

c₃;

c₄;

c₅), of which;

a first coefficient (c₀) of the decomposition is useable to identify the manufacturing week number of the tyre,

a second coefficient (c₁) of the decomposition is useable to identify a letter corresponding to the code used for retreading the tyre,

third, fourth, and fifth coefficients (c₂;

c₃;

c₄) of the decomposition are useable to identify three letters that, in combination, indicate the month, the factory, and the year of manufacture of the tyre, and

a sixth coefficient (c₅) of the decomposition is useable to identify the production number of the tyre.

2. The method according to claim 1,

wherein the decoding of the data read from the restricted storage range provides values useable to identify any combination of:

a production number;

a factory, a month, and year of manufacture of the tyre; and

a code used for retreading the tyre, and

wherein the values are useable to determine the serial number and part of a DOT number of the tyre.

3. The method according to claim 2, wherein:

the production number is identified by five digits, and/or

the factory, the month, and the year of manufacture are identified by a combination of three letters, and/or

the manufacturing week number is identified by one digit, and/or

the code used for retreading the tyre is identified by one letter.

4. The method according to claim 1, wherein the manufacturing week number is identified by an integer digit in a range of from 1 to 6.

5. The method according to claim 1, wherein the serial number and the manufacturing week number of the tyre are determined from ten values formed of four letters and six digits, each of the ten values being obtained in the decoding of the data read from the restricted storage range.

6. The method according to claim 1,

wherein, in the decoding step, the data read from the restricted storage range is decoded by decomposition of a binary quantity (N) stored in the bits of the restricted storage range on a base (B) defined by a free generating family of vectors, and

wherein the free generating family of vectors is distinct from a family of polynomials of a type (A⁰;

A¹;

A²;

. . . ;

Aⁿ), where n is a positive integer and A is a constant real quantity.

7. The method according to claim 1, wherein the free generating family of vectors defining the base is:

(1;

6¹;

6*24¹;

6*24²;

6*24³;

6*24⁴).

8. The method according to claim 1, wherein the data storage zone includes, in addition to the restricted storage range, at least one range of bits reserved for at least one element chosen from:

a protocol header, a filter value, a partition value, an identifier of a manufacturer of the tyre, and an item reference.

9. The method according to claim 1,

wherein the data storage zone is standardized, such that a quantity of bits stored in the data storage zone is limited by a standard, and

wherein the storage unit further includes a data storage free zone.

10. A method for writing data to an electronic device integrated in a tyre, the data being useable to identify a serial number and a manufacturing week number of the tyre, the method comprising steps of:

converting the serial number and the manufacturing week number of the tyre to a sequence of alphanumeric values;

encoding each value of the alphanumeric values to obtain a sequence of integer coefficients (c₀;

c₁;

c₂;

c₃;

c₄;

c₅);

calculating a quantity (N) by multiplying each coefficient (c₀;

c₁;

c₂;

c₃;

c₄;

c₅) by a corresponding vector (X₀;

X₁;

X₂;

X₃;

X₄;

X₅) of a predetermined free arithmetic base (B);

encoding the quantity in bits; and

writing the bits of the quantity as data in a restricted storage range of a storage unit of the electronic device,

wherein the data is subsequently readable and decodable to determine the serial number and manufacturing week number of the tyre.

11. A non-transitory computer-readable storage medium storing code instructions that, when executed by a computer causes the computer to perform a method for reading data stored in an electronic device integrated into a tyre identified by a serial number and a manufacturing week number, the device including a storage unit with a data storage zone having at least a restricted storage range formed of bits, in which a number of the bits totals to less than or equal to 38, the method including steps of:

reading the data stored in the restricted storage range; and

decoding the data read from the restricted storage range in order to determine the serial number and the manufacturing week number of the tyre,

wherein, in the decoding step, the data read from the restricted storage range is decoded by decomposition of a binary quantity (N) stored in the bits of the restricted storage range on a base (B) defined by a free generating family of vectors (X₀;

X₁;

. . . ;

X_n),

wherein one or more decomposition coefficients (c_i) in the base correspond to a value useable to identify one or more members of a group that includes;

a production number;

a factory, a week, a month, a year of manufacture of the tyre; and

a code used for retreading the tyre,

wherein the base (B) is a free arithmetic base, and

wherein a dimension of the free arithmetic base is 6, such that decomposition of the binary quantity (N) stored in the restricted storage range provides six coefficients (c₀;

c₁;

c₂;

c₃;

c₄;

c₅), of which;

a first coefficient (c₀) of the decomposition is useable to identify the manufacturing week number of the tyre,

a second coefficient (c₁) of the decomposition is useable to identify a letter corresponding to the code used for retreading the tyre,

third, fourth, and fifth coefficients (c₂;

c₃;

c₄) of the decomposition are useable to identify three letters that, in combination, indicate the month, the factory, and the year of manufacture of the tyre, and

a sixth coefficient (c₅) of the decomposition is useable to identify the production number of the tyre.

12. A non-transitory computer-readable storage medium storing code instructions that, when executed by a computer causes the computer to perform a method for writing data to an electronic device integrated in a tyre, the data being useable to identify a serial number and a manufacturing week number of the tyre, the method including steps of:

converting the serial number and the manufacturing week number of the tyre to a sequence of alphanumeric values;

encoding each value of the alphanumeric values to obtain a sequence of integer coefficients (c₀;

c₁;

c₂;

c₃;

c₄;

c₅);

calculating a quantity (N) by multiplying each coefficient (c₀;

c₁;

c₂;

c₃;

c₄;

c₅) by a corresponding vector (X₀;

X₁;

X₂;

X₃;

X₄;

X₅) of a predetermined free arithmetic base (B);

encoding the quantity in bits; and

writing the bits of the quantity as data in a restricted storage range of a storage unit of the electronic device,

wherein the data is subsequently readable and decodable to determine the serial number and the manufacturing week number of the tyre.

13. An apparatus for reading data stored in an electronic device integrated into a tyre, the apparatus comprising:

a sensor for reading the data stored in a storage unit of the electronic device integrated into the tyre, the storage unit including a data storage zone having at least a restricted storage range formed of bits, in which a number of the bits totals to less than or equal to 38, wherein the data read by the sensor is stored as bits; and

a decoder for decoding the bits to provide a serial number and a manufacturing week number of the tyre,

wherein, in the decoder, the data read from the restricted storage range is decoded by decomposition of a binary quantity (N) stored in the bits of the restricted storage range on a base (B) defined by a free generating family of vectors (X₀;

X₁;

. . . ;

X_n),

wherein one or more decomposition coefficients (c_i) in the base correspond to a value useable to identify one or more members of a group that includes;

a production number;

a factory, a week, a month, a year of manufacture of the tyre; and

a code used for retreading the tyre,

wherein the base (B) is a free arithmetic base, and

wherein a dimension of the free arithmetic base is 6, such that decomposition of the binary quantity (N) stored in the restricted storage range provides six coefficients (c₀;

c₁;

c₂;

c₃;

c₄;

c₅), of which;

a first coefficient (c₀) of the decomposition is useable to identify the manufacturing week number of the tyre,

a second coefficient (c₁) of the decomposition is useable to identify a letter corresponding to the code used for retreading the tyre,

third, fourth, and fifth coefficients (c₂;

c₃;

c₄) of the decomposition are useable to identify three letters that, in combination, indicate the month, the factory, and the year of manufacture of the tyre, and

a sixth coefficient (c₅) of the decomposition is useable to identify the production number of the tyre.