Mobile object position detecting apparatus
First Claim
1. A movable object emergency information apparatus comprisinga control unit;
- an antenna configured to receive radio waves from a satellite;
a receiver configured to calculate vehicle position information of the movable object based on the received radio waves and supply the vehicle position information to the control unit;
an emergency sensor configured to provide emergency information related to the movable object to the control unit;
a speed detecting device configured to supply speed information of the movable object to the control unit;
a timer configured to calculate a time during which the control unit does not receive vehicle position information from the receiver due to one or more of a plurality of faulty radio wave reception conditions, or due to geographic limitations to radio wave reception, and during which the speed information indicates that the movable object is traveling; and
an indicator configured to warn an occupant of the movable object that reception of the radio waves has become abnormal due to one of the plurality of faulty radio wave reception conditions;
wherein the control unit is configured to determine the existence of faulty radio wave reception conditions when the calculated time exceeds a predetermined time.
1 Assignment
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Accused Products
Abstract
A control unit 10 detects the presence/absence of receiving position information based on the position data provided from a GPS receiver 14. While the GPS receiver 14 is supplying no position data, the control unit 10 computes the travel distance of a vehicle according to a vehicle speed pulse signal input from a vehicle speed pulse input unit 18. When the obtained travel distance exceeds a predetermined distance, the control unit 10 determines abnormal reception due to faulty equipment. The predetermined distance is set in advance based on a reception disability area, etc. When the control unit 10 determines abnormal reception due to faulty equipment, it turns on an orange indicator. Thus, the person in the vehicle can recognize the abnormal reception due to faulty equipment.
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Citations
14 Claims
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1. A movable object emergency information apparatus comprising
a control unit; -
an antenna configured to receive radio waves from a satellite; a receiver configured to calculate vehicle position information of the movable object based on the received radio waves and supply the vehicle position information to the control unit; an emergency sensor configured to provide emergency information related to the movable object to the control unit; a speed detecting device configured to supply speed information of the movable object to the control unit; a timer configured to calculate a time during which the control unit does not receive vehicle position information from the receiver due to one or more of a plurality of faulty radio wave reception conditions, or due to geographic limitations to radio wave reception, and during which the speed information indicates that the movable object is traveling; and an indicator configured to warn an occupant of the movable object that reception of the radio waves has become abnormal due to one of the plurality of faulty radio wave reception conditions; wherein the control unit is configured to determine the existence of faulty radio wave reception conditions when the calculated time exceeds a predetermined time. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A movable object emergency information apparatus, comprising:
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a control unit; an antenna configured to receive radio waves from a satellite a receiver configured to calculate vehicle position information of the movable object based on the received radio waves and supply the vehicle position information to the control unit; an emergency sensor configured to provide emergency information related to the movable object to the control unit; a speed detecting device configured to supply speed information of the movable object to the control unit; and an indicator configured to warn an occupant of the movable object that reception of the radio waves has become abnormal due to one of a plurality of faulty radio wave reception conditions; wherein the control unit is configured to compute a travel distance of the movable object when the vehicle position information is not received from the receiver due to one or more of the plurality of faulty radio wave reception conditions, or else due to geographic limitations to radio wave reception. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification