초록 ▼

Pyroelectric detector systems may be used in vehicles for security applications, such as intrusion detection and anti-theft alarms. The pyroelectric detectors are small in size, highly reliable and consume very low power. They can be physically and electrically integrated with other vehicle componen

Pyroelectric detector systems may be used in vehicles for security applications, such as intrusion detection and anti-theft alarms. The pyroelectric detectors are small in size, highly reliable and consume very low power. They can be physically and electrically integrated with other vehicle components, including rear-view mirror assemblies in automobiles, without incurring additional installation costs. They can also be easily integrated into aircraft cockpits.

대표청구항 ▼

[ What is claimed is:] [1.] A method of ensuring reliable thermal detection of the presence of a body having a thermal profile in a compartment of a parked motor vehicle comprising the steps of:providing a thermal energy detection system including a pyroelectric detector, said pyroelectric detector

[ What is claimed is:] [1.] A method of ensuring reliable thermal detection of the presence of a body having a thermal profile in a compartment of a parked motor vehicle comprising the steps of:providing a thermal energy detection system including a pyroelectric detector, said pyroelectric detector having a first pyroelectric sensing element and a second pyroelectric sensing element, said first and second pyroelectric sensing elements arranged in opposed connection, said thermal energy detection system further comprising control circuitry responsive to electrical indicatives generated by said opposed first and second sensing elements;mounting said thermal energy detection system either in a trunk compartment or an interior compartment of the vehicle;monitoring a thermal profile of said trunk compartment or said interior compartment of the vehicle using said thermal energy detection system when the vehicle is parked and operating under vehicle battery power;sensing a change in the thermal profile due to the presence of a moving human body having a temperature different than the thermal profile; andgenerating a signal indicative of the change in the sensed thermal profile in the trunk compartment or the interior compartment, rein said thermal energy detection system is responsive to frequencies of change in sensed thermal profile in a restricted frequency range, thereby reducing the chance of a false alarm situation.