Apparatus for detecting magnetostrictive resonator and traffic system
First Claim
Patent Images
1. A magnetostrictive resonator detection apparatus, comprising:
- a transmission section for transmitting a resonance frequency of a magnetostrictive resonator; and
a reception section for detecting a resonance frequency oscillated by the magnetostrictive resonator, wherein one of a plurality of different resonance frequencies is transmitted and received and then another resonance frequency, different from said one resonance frequency, is transmitted and received, and wherein said reception section detects the resonance frequency oscillated by the magnetostrictive resonator after said transmission section terminates transmission, said transmission section and said reception section sharing a single antenna, and a switch section being provided to switch said antenna between reception and transmission.
1 Assignment
0 Petitions
Accused Products
Abstract
A magnetostrictive resonator detection apparatus includes a transmission section for transmitting a resonance frequency of a magnetostrictive resonator, and a reception section for detecting a resonance frequency oscillated by the magnetostrictive resonator.
-
Citations
18 Claims
-
1. A magnetostrictive resonator detection apparatus, comprising:
-
a transmission section for transmitting a resonance frequency of a magnetostrictive resonator; and a reception section for detecting a resonance frequency oscillated by the magnetostrictive resonator, wherein one of a plurality of different resonance frequencies is transmitted and received and then another resonance frequency, different from said one resonance frequency, is transmitted and received, and wherein said reception section detects the resonance frequency oscillated by the magnetostrictive resonator after said transmission section terminates transmission, said transmission section and said reception section sharing a single antenna, and a switch section being provided to switch said antenna between reception and transmission. - View Dependent Claims (2, 6, 7)
-
-
3. A magnetostrictive resonator detection apparatus, comprising:
-
a transmission section for transmitting a plurality of different resonance frequencies including a resonance frequency of a magnetostrictive resonator; a reception section for detecting a resonance frequency oscillated by the magnetostrictive resonator; and
,an intermediate frequency conversion section for converting the resonance frequency of the magnetostrictive resonator received by said reception section into an intermediate frequency; and
,a detection section for detecting output from said intermediate frequency conversion section. - View Dependent Claims (4, 5, 13, 14)
-
-
8. A traffic system, comprising:
-
a road having a plurality of magnetostrictive resonators, each of said magnetostrictive resonators having a resonant frequency; a vehicle having a magnetostrictive resonator detection apparatus, said resonator detection apparatus comprising; a transmission section for transmitting a plurality of different resonance frequencies in correspondence with the resonant frequencies of said plurality of magnetostrictive resonators; and a reception section for detecting a resonance frequency oscillated by each of said plurality of magnetostrictive resonators, wherein said reception section detects the resonance frequency oscillated by said magnetostrictive resonators after said transmission section terminates transmission. - View Dependent Claims (9, 10, 11, 12, 15, 16, 17, 18)
-
Specification