Method for assigning identifying elements in signals emitted by transmitters in a tire pressure indicating system to the wheels on which the transmitters are mounted

A method for allocating identifiers, that are contained in signals issued by transmitters arranged in a tire pressure monitoring system, comprising a pressure sensor, a transmitter and a transmission antenna on each of a number of wheels mounted at given positions of a vehicle, one or more receiving antennas on a vehicle body, and an electronic receiving and analysis system connected to the antennas by wire, to positions of the number of wheels on which the transmitters are arranged, by picking up the signals, containing the identifier, by the one or, more receiving antennas, transmitting them to the electronic receiving and analysis system and analyzing them by means of the latter with respect to their identifier, for which purpose one measures on monitored wheels not only a pressure in the tire but in addition an acceleration value derived from a moving condition of the respective wheel, transmits a signal derived therefrom by means of the respective transmitter to the electronic receiving and analysis system and analyses an information, contained in the signal, identifying the position of the wheel from which the signal has been obtained, characterized in that for differentiating between wheels on the right side of the vehicle and wheels on the left side of the vehicle, the sign of a transition acceleration (b) occurring on wheel electronics comprising the pressure sensor, the transmitter, the transmitting antenna and an acceleration sensor is determined for each running wheel, the wheel electronics being provided on the different wheels in corresponding mounting positions, that the sign of the variation of a centrifugal acceleration (z) occurring during the transition acceleration (b) is additionally determined and multiplied by the sign of the transition acceleration (b) determined for the respective wheel to obtain a multiplication product of the sign of the variation of the centrifugal acceleration (z) and of the transition acceleration (b), and that one differentiates between wheels on the right side of the vehicle and wheels on the left side of the vehicle by comparing the products of the two signs determined for the different wheels.

A method for allocating identifiers contained in signals issued by transmitters arranged in a tire pressure monitoring system, comprising furnishing a first wheel electronics comprising a first pressure sensor, a first transmitter, a first transmitting antenna and a first acceleration sensor being provided on a first wheel mounted to a right band side of a vehicle and furnishing a first wheel electronics, wherein the first wheel electronics is furnished in a first mounting position on the first wheel,

• furnishing a second wheel electronics comprising a second pressure sensor, a second transmitter, a second transmitting antenna and a second acceleration sensor being provided on a second wheel mounted to a left hand side of the vehicle and furnishing a second wheel electronics, wherein the second wheel electronics is furnished in a second mounting position on the second wheel,;
• mounting a receiving antenna on a vehicle body;
• connecting an electronic receiving and analysis system to the receiving antenna by a wire;
• monitoring not only the first tire pressure of the first wheel, but in addition a first acceleration value derived from a first moving condition of the first wheel;
• monitoring not only the second tire pressure of the second wheel, but in addition a second acceleration value derived from a second moving condition of the second wheel;
• transmitting a first signal derived from the first tire pressure of the first wheel and the first acceleration value by means of the first transmitter to the receiving antenna;
• transmitting a second signal derived from the second tire pressure of the second wheel and the second acceleration value by means of the second transmitter to the receiving antenna;
• picking up the first signal containing a first identifier by the receiving antenna;
• picking up the second signal containing a second identifier by the receiving antenna;
• transmitting the first signal and the second signal to the electronic receiving and analysis system and analyzing the first signal and the second signal in the electronic receiving and analysis system with respect to the first identifier and to the second identifier;
• analyzing first information, contained in the first signal;
• analyzing second information, contained in the second signal,
• determining a first sign of a first tangential acceleration (b1) occurring in the first wheel electronics for the first wheel and determining a second sign of a second tangential acceleration (b2) occurring in the second wheel electronics for the second wheel;
• additionally determining a third sign of the variation of a first centrifugal acceleration (z1) occurring in the first wheel electronics during the first tangential acceleration (b1);
• multiplying the first sign of the first tangential acceleration (b1) determined for the first wheel by the third sign of the variation of the first centrifugal acceleration (z1) to obtain a first multiplication product of the first sign and of the second sign,
• additionally determining a fourth sign of the variation of a second centrifugal acceleration (z2) occurring in the second wheel electronics during the second tangential acceleration (b2);
• multiplying the second sign of the second tangential acceleration (b2) determined for the second wheel bz the fourth sign of the variation of the second centrifugal acceleration (z2) to obtain a second multiplication product of the second sign and of the fourth sign;
• differentiating between the first wheel on the right side of the vehicle and the second wheel on the left side of the vehicle by comparing the first multiplication product and the second multiplication product.

A tire pressure monitoring system, comprising

• a first pressure sensor;
• a first transmitter;
• a first transmitting antenna;
• a first acceleration sensor, wherein
• the first pressure sensor, the first transmitter, the first transmitting antenna and the first acceleration sensor are provided on a first wheel mounted to a right hand side of a vehicle and furnish a first wheel electronics;
• a second pressure sensor;
• a second transmitter;
• a second transmitting antenna;
• a second acceleration sensor, wherein
• the second pressure sensor, the second transmitter, the second transmitting antenna and the second acceleration sensor are provided on a second wheel mounted to the left hand side of the vehicle and furnish a second wheel electronics;
• a receiving antenna mounted on a vehicle body;
• a wire;
• an electronic receiving and analysis system connected to the receiving antenna by the wire;
• wherein not only the first tire pressure of the first wheel is monitored, but in addition a first acceleration value derived from a first moving condition of the first wheel;
• wherein not only the second tire pressure of the second wheel is monitored, but in addition a second acceleration value derived from a second moving condition of the second wheel;
• wherein a first signal derived from the first tire pressure of the first wheel and the first acceleration value is transmitted by means of the first transmitter to the receiving antenna;
• wherein a second signal derived from the second tire pressure of the second wheel and the second acceleration value is transmitted by means of the second transmitter to the receiving antenna;
• wherein the first signal containing a first identifier is picked up by the receiving antenna;
• wherein the second signal containing a second identifier is picked up by the receiving antenna;
• wherein the first signal and the second signal are transmitted to the electronic receiving and analysis system and wherein the first signal and the second signal are analyzed in the electronic receiving and analysis system with respect to the first identifier and to the second identifier;
• wherein first information, contained in the first signal is analyzed;
• wherein second information, contained in the second signal is analyzed, for identifying the position of the first wheel from which the first signal has been obtained and for identifying the position of the second wheel from which the second signal has been obtained;
• wherein a first sign of a first tangential acceleration (b1) occurring in the first wheel electronics for the first wheel is determined and wherein the second sign of a second tangential acceleration (b2) occurring in the second wheel electronics for the second wheel is determined for differentiating between the first wheel on the right side of the vehicle and the second wheel on the left side of the vehicle;
• wherein additionally a third sign of the variation of a first centrifugal acceleration (z1) occurring during the first tangential acceleration (b1) is determined;
• wherein the first sign of the variation of the first tangential acceleration (b1) determined for the first wheel is determined to obtain a multiplication product of the third sign of the variation of the first centrifugal acceleration (z1) and of the first sign of the variation of the first tangential acceleration (b1);
• wherein additionally a fourth sign of the variation of a second centrifugal acceleration (z2) occurring during the second tangential acceleration (b2) is determined,
• wherein the second sign of the variation of the second tangential acceleration (b2) determined for the second wheel is determined to obtain a multiplication product of the fourth sign of the variation of the second centrifugal acceleration (z2) and of the second sign of the variation of the second tangential acceleration (b2);
• wherein between the first wheel on the right side of the vehicle and the second wheel on the left side of the vehicle is differentiated by comparing the multiplication product of the of the third sign of the variation of the first centrifugal acceleration (z1) and of the first sign of the variation of the first tangential acceleration (b1) with the multiplication product of the fourth sign of the variation of the second centrifugal acceleration (z2) and of the second sign of the variation of the second tangential acceleration (b2).