Communication device mounting position determination system and determination apparatus
First Claim
1. A communication device mounting position determination system comprising a communication device provided in each of wheels of a vehicle and a determination apparatus, provided in a vehicle body of the vehicle, including a determination unit that exchanges wireless signals with the communication devices and determines which of the vehicle wheels is provided with the communication device from which the wireless signal has been received,wherein the determination apparatus includes:
- a vehicle body-side transmission unit that transmits a first wireless signal in a first frequency band to the communication devices;
a vehicle body-side receiving unit that receives a second wireless signal in a second frequency band transmitted by the communication devices; and
a vehicle body-side signal strength detection unit that detects a signal strength of the second wireless signal received by the receiving unit,wherein each of the communication devices includes;
a wheel-side receiving unit that receives the first wireless signal transmitted by the determination apparatus;
a wheel-side signal strength detection unit that detects a signal strength of the first wireless signal received by the receiving unit; and
a wheel-side transmission unit that transmits, in the second wireless signal, information including the signal strength detected by the signal strength detection unit, andwherein the determination unit determines which wheel is provided with the communication device from which the vehicle body-side receiving unit has received the second wireless signal on the basis of the signal strength of the second wireless signal detected by the vehicle body-side signal strength detection unit and the signal strength included in the second wireless signal received by the vehicle body-side receiving unit.
1 Assignment
0 Petitions
Accused Products
Abstract
A communication device mounting position determination system and apparatus are provided configured to limit where a device can be installed in a vehicle. An ECU transmits an LF signal from an LF antenna to sensor units. The sensor units receive and detect the signal strength. The sensor units transmit a UHF signal to the ECU having information including the signal strength of the LF signal. The ECU detects the signal strength of the UHF signals. For example, on the basis of the signal strength of the LF signal, the ECU makes a determination as to which of the wheels is the transmission source of the UHF signal, with respect to the left-right direction of the body of the vehicle. Further, on the basis of the signal strength of the UHF signal received by the ECU, the ECU makes the determination with respect to the front-rear direction of the vehicle.
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Citations
11 Claims
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1. A communication device mounting position determination system comprising a communication device provided in each of wheels of a vehicle and a determination apparatus, provided in a vehicle body of the vehicle, including a determination unit that exchanges wireless signals with the communication devices and determines which of the vehicle wheels is provided with the communication device from which the wireless signal has been received,
wherein the determination apparatus includes: -
a vehicle body-side transmission unit that transmits a first wireless signal in a first frequency band to the communication devices; a vehicle body-side receiving unit that receives a second wireless signal in a second frequency band transmitted by the communication devices; and a vehicle body-side signal strength detection unit that detects a signal strength of the second wireless signal received by the receiving unit, wherein each of the communication devices includes; a wheel-side receiving unit that receives the first wireless signal transmitted by the determination apparatus; a wheel-side signal strength detection unit that detects a signal strength of the first wireless signal received by the receiving unit; and a wheel-side transmission unit that transmits, in the second wireless signal, information including the signal strength detected by the signal strength detection unit, and wherein the determination unit determines which wheel is provided with the communication device from which the vehicle body-side receiving unit has received the second wireless signal on the basis of the signal strength of the second wireless signal detected by the vehicle body-side signal strength detection unit and the signal strength included in the second wireless signal received by the vehicle body-side receiving unit. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11)
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7. A determination apparatus, provided in a vehicle body of a vehicle, including a determination unit that exchanges wireless signals with a communication device provided in each of wheels of the vehicle and determines which of the vehicle wheels is provided with the communication device from which the wireless signal has been received, the apparatus comprising:
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a vehicle body-side transmission unit that transmits a first wireless signal in a first frequency band to the communication devices; a vehicle body-side receiving unit that receives a second wireless signal in a second frequency band transmitted by the communication devices; and a vehicle body-side signal strength detection unit that detects a signal strength of the second wireless signal received by the receiving unit, wherein each of the communication devices detects a signal strength of the received first wireless signal and transmits, in the second wireless signal, information including the detected signal strength; and the determination unit determines which wheel is provided with the communication device from which the vehicle body-side receiving unit has received the second wireless signal on the basis of the signal strength of the second wireless signal detected by the vehicle body-side signal strength detection unit and the signal strength included in the second wireless signal received by the vehicle body-side receiving unit.
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Specification