APPARATUS AND METHOD FOR IDENTIFYING TIRE PRESSURE SENSOR MODULE
Disclosed are an apparatus and a method for identifying a plurality of tire pressure sensor modules. Data wirelessly transmitted from the tire pressure sensor modules are received by using a signal cable connected between a wheel speed sensor module and a control module. The control module identifies the pressure sensor modules mounted on vehicle tires according to the intensities of received signals.
1 . A tire pressure sensor module identifying apparatus comprising:
a plurality of tire pressure sensor modules mounted on tires of a vehicle to wirelessly transmit pressures of the tires;
a plurality of signal cables installed corresponding to the tire pressure sensor modules and electrically connected to electrical parts except for the tire pressure sensor modules to receive signals from the tire pressure sensor modules;
a signal intensity measuring unit to measure intensities of signals received therein from the tire pressure sensor modules through at least one of the signal cables;
a plurality of switches connected between the signal cables and the signal intensity measuring unit and selectively turned on or turned off; and
a control module to turn on one of the switches, compare the intensities of the signals received from the tire pressure sensor modules through the signal cable connected to the one switch, and identify a position of the tire pressure sensor module representing a highest signal intensity based on a position of the switch.
2 . The tire pressure sensor module identifying apparatus of claim 1 , further comprising a memory storing an identifier of the tire pressure sensor module representing the highest signal intensity and the position of the tire pressure sensor module representing the highest signal intensity.
3 . The tire pressure sensor module identifying apparatus of claim 1 , wherein the signal cables comprise power lines.
4 . The tire pressure sensor module identifying apparatus of claim 3 , wherein each power line is used to supply power to a wheel speed sensor.
5 . The tire pressure sensor module identifying apparatus of claim 1 , wherein each signal cable has one end connected to a wheel speed sensor to transfer a signal of the wheel speed sensor.
6 . The tire pressure sensor module identifying apparatus of claim 1 , wherein the control module sequentially turns on the switches to identify positions of the tire pressure sensor modules.
7 . A tire pressure sensor module identifying method comprising:
turning on one of switches of signal cables provided around a plurality of tire pressure sensor modules;
receiving and measuring signals transmitted from the tire pressure sensor modules through the signal cable connected to the switch;
comparing intensities of the measured signals of the tire pressure sensor modules with each other;
determining the tire pressure sensor module representing a highest signal intensity; and
identifying a position of the determined tire pressure sensor module based on a position of the switch.
8 . The tire pressure sensor module identifying method of claim 7 , wherein the receiving the signals from the tire pressure sensor modules comprises receiving identifiers of the tire pressure sensor modules.
9 . The tire pressure sensor module identifying method of claim 8 , further comprising storing the identifier of the tire pressure sensor module representing the highest signal intensity together with the position of the tire pressure sensor module while corresponding to the identifier.
10 . The tire pressure sensor module identifying method of claim 7 , further comprising previously storing information about positions of the switches of the signal cables provided around the tire pressure sensor modules.