Device and method for distinguishing positions of tire sensors of a double tire system
First Claim
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1. A device for distinguishing positions of tire sensors of a double tire on a vehicle, the device comprising:
- two tire sensors each associated with a respective tire of the double tire;
a central processing unit disposed on the vehicle;
an LF antenna disposed on the vehicle and connected to said central processing unit;
said tire sensors having a device for measuring field strength of a signal emitted by said LF antenna, and said tire sensors reporting back information about the measured field strength through said LF antenna to said central processing unit; and
said central processing unit determining the positions of said two tire sensors of the double tire by comparing a sign of the measured field strength reported from the one of said two tire sensors with a sign of the measured field strength reported from the other one of said two tire sensors.
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Abstract
A device and a method for distinguishing positions of two tire sensors of a double tire include an LF antenna attached to a vehicle and connected to a central processing unit and one tire sensor each per tire. The tire sensors have a device for measuring field strength of a signal emitted by the LF antenna and the tire sensors report back information on the measured field strength through the LF antenna to the central processing unit. The central processing unit determines the position of the two tire sensors of the double tire from a distribution or course of a current flow during wheel rotation.
14 Citations
16 Claims
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1. A device for distinguishing positions of tire sensors of a double tire on a vehicle, the device comprising:
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two tire sensors each associated with a respective tire of the double tire; a central processing unit disposed on the vehicle; an LF antenna disposed on the vehicle and connected to said central processing unit; said tire sensors having a device for measuring field strength of a signal emitted by said LF antenna, and said tire sensors reporting back information about the measured field strength through said LF antenna to said central processing unit; and said central processing unit determining the positions of said two tire sensors of the double tire by comparing a sign of the measured field strength reported from the one of said two tire sensors with a sign of the measured field strength reported from the other one of said two tire sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 16)
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13. A method for distinguishing positions of two tire sensors of a double tire on a vehicle, the method comprising the following steps:
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providing a device having an evaluation unit disposed on the vehicle, at least one LF antenna disposed on the vehicle laterally next to the double tire and connected to the evaluation unit for emitting signals with variable power, and tire sensors each associated with a respective tire; selecting a transmission power, for transmission of a signal through the LF antenna, high enough to enable reception by the two tire sensors of the double tire; transmitting a signal through the LF antenna to the tire sensors; checking if both tire sensors have received the signal transmitted by the LF antenna; if both tire sensors have received the transmitted signal, gradually reducing the LF transmission power for transmission of the signal through the LF antenna and repeating the transmitting and checking steps until only one tire sensor receives the transmitted signal; and if only one tire sensor has received the transmitted signal, assigning the receiving tire sensor to a position nearest the LF antenna and assigning the other tire sensor having no longer received the transmitted signal to a position furthest from the LF antenna. - View Dependent Claims (14, 15)
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Specification