IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0887221
(2001-06-22)
|
우선권정보 |
JP-0188125 (2000-06-22) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Matsushita Electric Industrial Co., Ltd.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
19 인용 특허 :
5 |
초록
▼
There are provided a vehicle detection apparatus and a vehicle detection method which are capable of detecting a sound source even when a plurality of vehicles are traveling simultaneously or when there are noises produced from something other than the desired vehicle and calculating the location in
There are provided a vehicle detection apparatus and a vehicle detection method which are capable of detecting a sound source even when a plurality of vehicles are traveling simultaneously or when there are noises produced from something other than the desired vehicle and calculating the location in the vehicle traveling direction and the lane direction of the sound source and the number of passing vehicles. In the vehicle detection apparatus and the vehicle detection method, noises are collected by a microphone array (402) comprising a plurality of microphones arranged in the form of a matrix in the same plane, the outputs thereof are sampled periodically with time windows in a noise component matrix calculation section (122), the direction in the vehicle traveling direction and the lane direction of the sound source in each window is estimated in an α-direction calculation section (410) and a β-direction calculation section (417), the vehicle is detected by the degree of similarity between the estimated directions in the vehicle traveling direction and traveling sound templates in a vehicle detection section (124), and the estimated directions in the lane direction are counted for each lane and the location in the lane direction of the sound source is detected in a lane detection section (312).
대표청구항
▼
There are provided a vehicle detection apparatus and a vehicle detection method which are capable of detecting a sound source even when a plurality of vehicles are traveling simultaneously or when there are noises produced from something other than the desired vehicle and calculating the location in
There are provided a vehicle detection apparatus and a vehicle detection method which are capable of detecting a sound source even when a plurality of vehicles are traveling simultaneously or when there are noises produced from something other than the desired vehicle and calculating the location in the vehicle traveling direction and the lane direction of the sound source and the number of passing vehicles. In the vehicle detection apparatus and the vehicle detection method, noises are collected by a microphone array (402) comprising a plurality of microphones arranged in the form of a matrix in the same plane, the outputs thereof are sampled periodically with time windows in a noise component matrix calculation section (122), the direction in the vehicle traveling direction and the lane direction of the sound source in each window is estimated in an α-direction calculation section (410) and a β-direction calculation section (417), the vehicle is detected by the degree of similarity between the estimated directions in the vehicle traveling direction and traveling sound templates in a vehicle detection section (124), and the estimated directions in the lane direction are counted for each lane and the location in the lane direction of the sound source is detected in a lane detection section (312). laim 1, wherein a process for an alarm unit includes the steps of: (1) when said detecting value (TA) is greater than said first temperature setting value (TS1) plus said setting difference value (X), namely, TA>TS1+X, said alarm unit sends a first stage of alarm signal; (2) when said detecting value (TA) is greater than said second temperature setting value (TS2) plus said setting difference value (X) multiplied by a setting coefficient (y), namely, TA>TS2+yX, said alarm unit sends a second stage of alarm signal; (3) when said detecting value (TA) is sequentially greater than each grade of temperature setting value (TS3 . . . TSn-1,TSn) plus said setting difference value (X) multiplied by said setting coefficient (y), namely, TA>TSn+yX, said alarm unit sends each stage of alarm signal. 3. The control method using power to prevent overheat inside of an electric equipment in accordance with claim 1, wherein a pre-alarm control process for detecting the fading degree of each detected member includes the steps: (1) reading the total value (Qt) of each fading parameter of each detected member in said electric equipment, when said total value (Qt) is greater than a setting fading value (Qs), namely, Qt>Qs,said alarm unit detects a fading alarm signal; (2) when the total value (Qt) is greater than said setting fading value (Qs) plus a setting difference value (Z), namely, Qt>Qs+Z, a central processing unit outputs a control signal to a control unit, an alarm unit, and a power cut-off protection unit to force the electric equipment to stop output of power, thereby stopping operation the electric equipment. ins above the third predetermined value; and, wherein the second and third predetermined values are approximately equal whereby the second alarm is activated when the filter is bypassed. 2. A method of preventing damage to a vehicle transmission from contaminants in a hydraulic system, the transmission having a hydraulic pump and filter, the method comprising the steps of: sensing a first pressure on a first side of the filter and a second pressure on a second side of the filter; comparing the first and second pressures to determine a pressure differential across the filter; in the event the pressure differential exceeds a predetermined value and a transmission input speed is above a predetermined speed, activating an alarm to a vehicle operator and reducing the input speed; and, further reducing the input speed and shifting the transmission to neutral in the event the pressure differential continues to exceed the predetermined value after the input speed has been reduced. 3. In a vehicle having an engine, transmission and electronic controller, the transmission having a hydraulic pump, filter, and filter bypass valve, a first pressure transducer in communication with a pump outlet for measuring a pump pressure and a second pressure transducer in communication with a filter outlet for measuring a pressure at the filter outlet wherein the electronic controller determines a pressure differential across the filter and at least one alarm activated by the electronic controller based on the pressure differential across the filter and wherein the second pressure transducer is also in communication with a park brake release piston and measures an oil pressure at the park brake release piston and wherein one alarm is activated when the pressure differential indicates a restricted valve and a second alarm is activated when the pressure differential reaches a value at which the filter bypass valve will open.
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