IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0172801
(2002-06-13)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
11 |
초록
▼
Positioning apparatus for use in a moving vehicle includes circuitry arranged to process signals received from GPS satellites, and to provide signals in response thereto from which the position of the apparatus can be calculated at a remote station. The apparatus provides, for each satellite in view
Positioning apparatus for use in a moving vehicle includes circuitry arranged to process signals received from GPS satellites, and to provide signals in response thereto from which the position of the apparatus can be calculated at a remote station. The apparatus provides, for each satellite in view, carrier frequency estimation signals, samples of the carrier signals and code tracking signals to a data transmission device, which modulates the signals onto a carrier prior to transmission to the remote station. A carrier loop reconstruction device and a location processor in the remote station cooperate to determine the location of the positioning apparatus. A memory device at the remote station may record the signals received from the vehicle over a period of time, for subsequent carrier loop reconstruction and location determination.
대표청구항
▼
Positioning apparatus for use in a moving vehicle includes circuitry arranged to process signals received from GPS satellites, and to provide signals in response thereto from which the position of the apparatus can be calculated at a remote station. The apparatus provides, for each satellite in view
Positioning apparatus for use in a moving vehicle includes circuitry arranged to process signals received from GPS satellites, and to provide signals in response thereto from which the position of the apparatus can be calculated at a remote station. The apparatus provides, for each satellite in view, carrier frequency estimation signals, samples of the carrier signals and code tracking signals to a data transmission device, which modulates the signals onto a carrier prior to transmission to the remote station. A carrier loop reconstruction device and a location processor in the remote station cooperate to determine the location of the positioning apparatus. A memory device at the remote station may record the signals received from the vehicle over a period of time, for subsequent carrier loop reconstruction and location determination. ctual pressure. 5. A failure diagnostic system according to claim 1, further comprising: an indicating device for indicating a failure of said evaporated fuel processing system when the calculated degree of pressure increase is greater than a determination value. 6. A method for detecting failure in an evaporated fuel processing system, comprising: reducing pressure inside a fuel tank until a pressure inside the fuel tank reaches a predetermined negative pressure; sealing off the fuel tank when the pressure reaches the predetermined negative pressure; continuously detecting an actual pressure inside the fuel tank; continuously setting a reference value that increases at a predetermined rate; comparing the detected actual pressure with the set reference value; and calculating the degree of pressure increase inside the fuel tank based on a value equal to or lower than the set reference value when the detected actual pressure is higher than the set reference value. 7. The method of claim 6, wherein the calculating step includes, using the set reference value to calculate the degree of pressure increase when the detected actual pressure is higher than the set reference value. 8. The method of claim 6, wherein the calculating step includes, using a value of a previous actual pressure detected before the detected actual pressure became higher than the set reference value. 9. The method of claim 6, further comprising: calculating the degree of pressure increase inside the fuel tank based on the detected actual pressure when the detected actual pressure is lower than the set reference value. 10. The method of claim 6, further comprising: indicating a failure of the evaporated fuel processing system when the calculated degree of pressure increase is greater than a determination value. stem and arranged to transmit the determined property or characteristic of occupancy of the vehicle.47. The vehicle of claim 41, further comprising at least one environment sensor each sensing a state of the environment around the vehicle, said communications device being coupled to said at least one environment sensor and being arranged to transmit the sensed state of the environment around the vehicle.48. The vehicle of claim 41, further comprising a memory unit coupled to said diagnostic system and said communications device, said memory unit being arranged to receive the diagnosis of the state of the vehicle or the state of a component of the vehicle from said diagnostic system and store the diagnosis, said communications device being arranged to interrogate said memory unit to obtain the stored diagnosis to enable transmission thereof.49. The vehicle of claim 41, wherein said diagnostic system comprises a plurality of sensors mounted at different locations on the vehicle, each of said sensors providing a measurement related to a state of said sensor or a measurement related to a state of the mounting location and a processor coupled to said sensor systems and arranged to diagnose the state of the vehicle or the state of the component of the vehicle based on the measurements of said sensors.50. The vehicle of claim 49, wherein at least one of said sensors is a sensor selected from a group consisting of a single axis acceleration sensor, a double axis acceleration sensor, a triaxial acceleration sensor and a gyroscope.51. The vehicle of claim 49, wherein at least one of said sensors includes an RFID response unit, further comprising at least one RFID interrogator device, said at least one interrogator device causing said RFID response units of said at least one sensor to transmit a signal representative of the measurement of said at least one sensor to said processor.52. The vehicle of claim 49, wherein at least one of said sensors includes a SAW sensor arranged to receive a signal and return a signal modified by virtue of the state of said SAW sensor or the state of the mounting location of said SAW sensor.53. The vehicle of claim 41, wherein the state of the vehicle diagnosed by said diagnostic system in
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