Tire information detecting apparatus without distortion
First Claim
1. A tire information detecting apparatus, comprising:
- an interrogator which transmits an interrogation signal toward a tire in a vehicle at a transmitting timing, and receives a reply signal including tire information at a receiving timing so as to process the reply signal;
a responder which has a sensor being excited by a predetermined frequency signal to detect the tire information and is disposed in the tire to return the reply signal to the interrogator at the receiving timing in responding to the interrogation signal;
a mixer unit which receives the interrogation signal having a first signal and a second signal which is spaced the predetermined frequency away from the first signal, from the interrogator, and outputs a signal of the frequency difference between the first and second signals to the responder by mixing the first and second signals.
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Accused Products
Abstract
A tire information detecting apparatus includes an interrogator which transmits an interrogation signal toward a tire in a vehicle at a transmitting timing, and receives a reply signal including tire information at a receiving timing so as to process the signals. A responder is disposed in the tire and has a sensor excited by a predetermined frequency signal for detecting tire information so as to return the reply signal to the interrogator at the receiving timing in responding to the interrogation signal. A mixer unit which receives the interrogation signal having a first signal and a second signal which is spaced the predetermined frequency away from the first signal, from the interrogator, and outputs a signal of the frequency difference between the two signals to the responder by mixing the first and second signals.
5 Citations
4 Claims
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1. A tire information detecting apparatus, comprising:
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an interrogator which transmits an interrogation signal toward a tire in a vehicle at a transmitting timing, and receives a reply signal including tire information at a receiving timing so as to process the reply signal;
a responder which has a sensor being excited by a predetermined frequency signal to detect the tire information and is disposed in the tire to return the reply signal to the interrogator at the receiving timing in responding to the interrogation signal;
a mixer unit which receives the interrogation signal having a first signal and a second signal which is spaced the predetermined frequency away from the first signal, from the interrogator, and outputs a signal of the frequency difference between the first and second signals to the responder by mixing the first and second signals. - View Dependent Claims (2, 3, 4)
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Specification