Portable security system for outdoor sites
First Claim
1. A portable security system suitable for protection of property within a monitored area from human intruders, the security system comprising:
- a portable housing;
a detector mounted on the housing for sensing an intrusion event within the monitored area and producing a detection signal when an intrusion event is detected;
a first alarm generator mounted within the housing for producing an output signal effective at clearing the monitored area of non-human animal intruders, the output signal not being alarming to humans;
a second alarm generator mounted within the housing for producing a second alarm capable of startling a human intruder;
a controller mounted within the housing for sequentially activating the first alarm generator for a predetermined period of time in response to the detection signal from the detector and thereafter activating the second alarm generator if the detector is then producing the detection signal; and
a power supply for powering the detector, the first and second alarm generators and the controller.
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Accused Products
Abstract
A security system (10) suitable for use in monitoring property at an outdoor site that includes a portable housing (12) that supports a motion detector (14) for sensing motion within a detection zone. The security system further includes an ultrasonic transducer (74) and several alarm generators capable of repelling a human intruder, including a high intensity illumination source (18), high decibel siren (82), strobe light (19), and a speaker (78) for transmitting a prerecorded message. When an intrusion is initially detected by the motion detector, the ultrasonic transducer is activated to emit an ultrasonic signal that is irritating to nonhuman animals, thus clearing the detection zone of nonhuman intruders. If after sounding of the ultrasonic transducer motion is still detected, one or more of the alarms is activated. Additionally, an automatic telephone dialer (86) may be included in the system and activated by the system as another type of alarm, in response to detected intrusion. The system is integrated within the portable housing and is resistant to false alarms, making it suitable for use in monitoring property stored at an outside site. A method for utilizing the security system to protect property is also disclosed.
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Citations
18 Claims
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1. A portable security system suitable for protection of property within a monitored area from human intruders, the security system comprising:
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a portable housing; a detector mounted on the housing for sensing an intrusion event within the monitored area and producing a detection signal when an intrusion event is detected; a first alarm generator mounted within the housing for producing an output signal effective at clearing the monitored area of non-human animal intruders, the output signal not being alarming to humans; a second alarm generator mounted within the housing for producing a second alarm capable of startling a human intruder; a controller mounted within the housing for sequentially activating the first alarm generator for a predetermined period of time in response to the detection signal from the detector and thereafter activating the second alarm generator if the detector is then producing the detection signal; and a power supply for powering the detector, the first and second alarm generators and the controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A security system suitable for protection of property within a monitored area from human intruders, the security system comprising:
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a detector for sensing an intrusion within the monitored area and producing a detection signal when intrusion is detected; an alarm generator for producing an alarm capable of startling a human intruder; an ultrasonic signal generator; a controller for activating the ultrasonic signal generator for at least a portion of a predetermined first time period in response to the detection signal from the detector, and for activating the alarm generator at the end of the first time period if the detector is then producing the detection signal; and a power supply for powering the detector, the alarm generator, the ultrasonic signal generator, and the controller. - View Dependent Claims (14, 15, 16)
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17. A method for protecting property within a monitored area from human intrusion, comprising:
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detecting an intrusion within the monitored area with a detector and producing a detection signal when intrusion is detected; generating an ultrasonic signal for at least a portion of a predetermined time period in response to the detection signal from the detector to clear animals sensitive to ultrasound from the monitored area; and activating an alarm generator capable of startling a human intruder at the end of the predetermined time period if the detector is then producing the detection signal.
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18. A method for protecting property within a monitored area from human intrusion, comprising:
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positioning a plurality of portable security systems around the perimeter of the monitored area, each security system including a detector for sensing an intrusion within a corresponding detection zone and for producing a detection signal when intrusion is detected, an alarm generator for producing an alarm and a controller for activating the alarm generator in response to receiving the detection signal from the detector; forming a communication link between the plurality of portable security systems so that the controllers of the security system are capable of communicating with each other; operating the detector of each of the security systems until a detection signal is generated by the detector of one of the security systems; and sending a signal over the communication link from the controller of the security system having the detector that generated the detection signal to the controllers of the other security systems, whereby the controllers of the other security systems become subservient to the controller of the first security system that sent the signal, and the alarm generator of each of the security systems is activated by the controller of each of the security systems.
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Specification