System, method, and apparatus for detecting and jamming wireless devices

• US 9,882,674 B1
• Filed: 07/02/2017
• Issued: 01/30/2018
• Est. Priority Date: 07/02/2017
• Status: Active Grant

• Current Assignee: Cell Detect, Inc.
• Original Assignee: Fidelity Engineering Group, Inc.
• Inventors: Defant, John C., Segal, David
• Primary Examiner(s): Lee, John J
• Application Number:
  US15/640,550
• Time in Patent Office: 212 Days
• Field of Search: 455 1, 455 6711, 455561, 455522, 455 69
• CPC Class Codes: H04K 2203/10 Jamming or countermeasure used for a particular application
• CPC Class Codes: H04K 3/224 with countermeasures at transmission and/or reception of the jammed signal, e.g. stopping operation of transmitter or receiver, nulling or enhancing transmitted power in direction of or at frequency of jammer
• CPC Class Codes: H04K 3/42 characterized by the control of the jamming frequency or wavelength
• CPC Class Codes: H04K 3/45 characterized by including monitoring of the target or target signal, e.g. in reactive jammers or follower jammers for example by means of an alternation of jamming phases and monitoring phases, called "look-through mode"
• CPC Class Codes: H04K 3/822 by detecting the presence of a surveillance, interception or detection
• CPC Class Codes: H04K 3/825 by jamming

Abstract

A system provides for radio frequency detection of an offending device within a specific range of a body worn device. Upon detection of the radio frequency signal, the body worn device jams communications by the offending device and optionally communicates to an infrastructure to alert of the presence and optionally the location of the radio frequency signal, and therefore the offending device. In some embodiments, the user and/or location of the body worn device is/are revealed and the source of the radio frequency signal is readily determined for confiscation of the offending device. Other optional features include locating/tracking of the body worn device (and wearer) detection of tampering with the body worn device, and detection of cloaking of the body worn device (e.g. submerging in water or covering with aluminum foil, etc.).

Claims

1. A system for detecting and jamming radio frequency emitting devices, the system comprising:

at least one base station, the base station including a base station processor and a base station transceiver, the base station transceiver operatively coupled to the base station processor;

a plurality of body worn devices, each body worn device comprising a processor, a transceiver operatively coupled to the processor, a radio frequency detector operatively coupled to the processor, a jammer operatively coupled to the processor, and a source of power, the source of power providing operational power to the processor, to the transceiver, to the jammer, and to the radio frequency detector;

software running on the processor of the body worn device communicates with the radio frequency detector and, if a target radio frequency is detected by the radio frequency detector, the software initiates the jammer to jam one or more radio frequencies and initiates a communication from the transceiver to the base station transceiver indicating that the target radio frequency was detected; and

upon receipt of the communication indicating that the target radio frequency was detected by the base station transceiver, software running on the base station processor determines an offending body worn device and signals an alert.

2. The system for detecting radio frequency emitting devices of claim 1, wherein the body worn devices further comprise a positioning system and a location of the body worn device is included in the communication.

3. The system for detecting radio frequency emitting devices of claim 1, wherein the one or more radio frequencies are different than the target radio frequency.

4. The system for detecting radio frequency emitting devices of claim 1, wherein the jammer jams by mimicking a protocol of an offending device that emits the target radio frequency.

5. The system for detecting radio frequency emitting devices of claim 1, wherein when the software running on the processor of the body worn device communicates with the radio frequency detector and the target radio frequency abates, the software initiates the jammer to stop jamming.

6. The system for detecting radio frequency emitting devices of claim 1, wherein the jammer sweeps among the one or more radio frequencies.

7. A method of detecting and jamming a radio frequency emission, the method comprising:

(a) monitoring a predetermined radio frequency at a body worn device;

(b) if the predetermined radio frequency is detected, jamming communications frequencies associated with the radio frequency to preclude or limit usage of an offending device;

determining if the body worn device has been tampered at the body worn device; and

responsive to determining the body worn device has been tampered, sending a signal from the body worn device to a base station indicating the body worn device has been tampered, the signal including the identification of the body worn device;

receiving the signal by the base station.

8. The method of claim 7, further comprising:

if the predetermined radio frequency is detected, transmitting a signal from a transmitter of the body worn device to a receiver of a base station, the signal including an identification of the body worn device.

9. The method of claim 8, whereas the step of jamming communications frequencies associated with the radio frequency includes jamming on at least one frequency that is different than the predetermined radio frequency.

10. The method of claim 8, whereas the step of jamming communications frequencies associated with the radio frequency includes jamming by sweeping through the communications frequencies associated with the radio frequency.

11. A computer-based system for detecting and jamming radio frequency transmissions, the computer-base system comprising:

a body worn device, the body worn device comprising a processor, a wireless transceiver communicatively coupled to the processor, a jammer interfaced to the processor, and a radio frequency transmission detector interfaced to the processor, the radio frequency transmission detector adapted to detect a radio frequency transmission of at least one frequency;

software running on the processor monitors the radio frequency transmission detector and, upon the radio frequency transmission detector detecting any of the at least one frequency, the processor signals the jammer to jam at least one other frequency, the at least one other frequency associated with the at least one frequency for two-way communications.

12. The computer-based system for detecting radio frequency transmissions of claim 11, wherein upon the radio frequency transmission detector detecting any of the at least one frequency, the processor formats a signal and sends the signal through a wireless communication channel.

13. The computer-based system for detecting radio frequency transmissions of claim 12, wherein the signal comprises an identification of the body worn device.

14. The computer-based system for detecting radio frequency transmissions of claim 12, further comprising software running on a base station processor that monitors a base station transceiver and upon detection of the signal on the wireless communication channel, the software running on the base station processor signals an alarm.

15. The computer-based system for detecting radio frequency transmissions of claim 14, wherein the body worn device further comprises a tamper determining device operatively coupled to the processor and upon tampering, the software running on the processor detects the tampering, formats a tamper signal comprising an identification of the body worn device, and sends the tamper signal to the base station processor through the communication channel, and upon receipt of the tamper signal, the software running on the base station signals a tamper alarm.

16. The computer-based system for detecting radio frequency transmissions of claim 11, wherein the radio frequency transmission of at least one frequency is from a cellphone.

17. The computer-based system for detecting radio frequency transmissions of claim 16, wherein the at least one other frequency associated with the at least one frequency includes a response frequency on which a response is expected to a cell phone from a cell tower.

18. The computer-based system for detecting radio frequency transmissions of claim 11, wherein one of the at least one other frequency is equivalent to one of the at least one frequency.

19. The computer-based system for detecting radio frequency transmissions of claim 11, wherein the radio frequency transmission detector detects when the radio frequency transmission of at least one frequency exceeds a predetermined power threshold.