Intrusion detecting apparatus for a vehicle
First Claim
1. An intrusion detecting apparatus for a vehicle comprising:
- an ultrasonic transmitting/receiving sensor comprising;
an ultrasonic transmitter, provided in a passenger compartment of said vehicle, for transmitting an ultrasonic signal, andan ultrasonic receiver, arranged closely to said ultrasonic transmitter, for receiving said ultrasonic signal;
intrusion detecting means for detecting whether or not there is an intrusion into said passenger compartment based on said ultrasonic signal received by said ultrasonic receiver;
stopping means for intermittently stopping a transmission of said ultrasonic signal from said ultrasonic transmitter; and
cover detecting means for detecting whether or not said ultrasonic transmitting/receiving sensor is covered, said cover detecting means comprising means for determining when a level of said ultrasonic signal received by said ultrasonic receiver is equal to or below an upper limit level, whereinwhen said ultrasonic receiver receives said ultrasonic signal having said level being equal to or below said upper limit level after said stopping means stops said transmission of said ultrasonic signal, said cover detecting means judges that said ultrasonic transmitting/receiving sensor is covered and when said ultrasonic receiver receives said ultrasonic signal having said level being greater than said upper limit level after said stopping means stops said transmission of said ultrasonic signal, said cover detecting means judges that said ultrasonic transmitting/receiving sensor is not covered.
1 Assignment
0 Petitions
Accused Products
Abstract
An intrusion detecting apparatus for a vehicle comprising an ultrasonic transmitting/receiving sensor, an intrusion detecting unit for detecting whether or not a person intrudes into a passenger compartment, based on the received signal, a stopping unit for intermittently stopping the transmission from the transmitter, and a cover detecting unit for detecting whether or not the sensor is covered, based on the signal received after stopping the transmission of the signal and, in response to a predetermined condition representing that the sensor is covered, whereby it can correctly determine whether or not the sensor is covered, improving the accuracy of the detection of an illegal intrusion of a person. At least one of a transmitter and a receiver in the sensor and the intrusion detecting unit is also intermittently operated to reduce the power consumption.
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Citations
30 Claims
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1. An intrusion detecting apparatus for a vehicle comprising:
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an ultrasonic transmitting/receiving sensor comprising; an ultrasonic transmitter, provided in a passenger compartment of said vehicle, for transmitting an ultrasonic signal, and an ultrasonic receiver, arranged closely to said ultrasonic transmitter, for receiving said ultrasonic signal; intrusion detecting means for detecting whether or not there is an intrusion into said passenger compartment based on said ultrasonic signal received by said ultrasonic receiver; stopping means for intermittently stopping a transmission of said ultrasonic signal from said ultrasonic transmitter; and cover detecting means for detecting whether or not said ultrasonic transmitting/receiving sensor is covered, said cover detecting means comprising means for determining when a level of said ultrasonic signal received by said ultrasonic receiver is equal to or below an upper limit level, wherein when said ultrasonic receiver receives said ultrasonic signal having said level being equal to or below said upper limit level after said stopping means stops said transmission of said ultrasonic signal, said cover detecting means judges that said ultrasonic transmitting/receiving sensor is covered and when said ultrasonic receiver receives said ultrasonic signal having said level being greater than said upper limit level after said stopping means stops said transmission of said ultrasonic signal, said cover detecting means judges that said ultrasonic transmitting/receiving sensor is not covered. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An intrusion detecting apparatus for a vehicle comprising:
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an ultrasonic transmitting/receiving sensor comprising; an ultrasonic transmitter, provided in a passenger compartment of said vehicle, for transmitting an ultrasonic signal, and an ultrasonic receiver, arranged closely to said ultrasonic transmitter, for receiving said ultrasonic signal; intrusion detecting means for detecting whether or not there is an intrusion into said passenger compartment based on said ultrasonic signal received by said ultrasonic receiver; stopping means for intermittently stopping a transmission of said ultrasonic signal from said ultrasonic transmitter; and cover detecting means for detecting whether or not said ultrasonic transmitting/receiving sensor is covered, based on said ultrasonic signal by said ultrasonic receiver after said stopping means stops said transmission of said ultrasonic signal from said ultrasonic transmitter, and in response to a predetermined condition representing that said ultrasonic transmitting/receiving sensor is covered, said cover detecting means comprising; means for determining, only when a level of said ultrasonic signal received by said ultrasonic receiver is equal to or below an upper limit, that said ultrasonic transmitting/receiving sensor is covered, counting means for counting a number of times when said level of said ultrasonic signal received by said ultrasonic receiver becomes equal to or below said upper limit level after respective stops of said transmission of said ultrasonic signal from said ultrasonic transmitter, and period judging means for judging whether or not said number of times counted by said counting means reaches a predetermined number representing a period suitable to exclude an influence of disturbance on a result detected by said cover detecting means, said cover detecting means detecting, when said period judging means judges that said number of times counted reaches said predetermined number, that said ultrasonic transmitting/receiving sensor is covered. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An intrusion detecting apparatus for a vehicle comprising:
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an ultrasonic transmitting/receiving sensor comprising; an ultrasonic transmitter, provided in a passenger compartment of said vehicle, for transmitting an ultrasonic signal, and an ultrasonic receiver, arranged closely to said ultrasonic transmitter, for receiving said ultrasonic signal; intrusion detecting means for detecting whether or not there is an intrusion into said passenger compartment based on said ultrasonic signal received by said ultrasonic receiver; stopping means for intermittently stopping a transmission of said ultrasonic signal from said ultrasonic transmitter; and cover detecting means for detecting whether or not said ultrasonic transmitting/receiving sensor is covered, based on said ultrasonic signal received by said ultrasonic receiver after said stopping means stops said transmission of said ultrasonic signal from said ultrasonic transmitter, and in response to a predetermined condition representing that said ultrasonic transmitting/receiving sensor is covered, said cover detecting means comprising; level determining means for determining, each time after said stopping means stops said transmission, whether or not a level of said ultrasonic signal received by said ultrasonic receiver is equal to or below an upper limit in level representing that said ultrasonic transmitting/receiving sensor is covered; setting means for setting, each time after said stopping means stops said transmission, count data representing a result of a determination by said level determining means; calculating means for calculating a sum of a predetermined latest number of said count data, and sum determining means for determining, each time after said stopping means stops said transmission, whether or not said sum reaches a predetermined value of a number of said count data representing that said ultrasonic transmitting/receiving sensor is covered, wherein said cover detecting means detects, when said sum determining means determines that said sum reaches said predetermined value, that said ultrasonic transmitting/receiving sensor is covered. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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Specification