Handheld System for Radar Detection

• US 20080169960A1
• Filed: 10/30/2006
• Published: 07/17/2008
• Est. Priority Date: 10/30/2006
• Status: Abandoned Application

• Current Assignee: Erwin T. Rosenbury
• Original Assignee: Erwin T. Rosenbury
• Inventors: Rosenbury, Erwin T.
• Application Number:
  US11/554,578
• Publication Number:
  US 20080169960A1
• Time in Patent Office: Days
• US Class Current: 342/27
• CPC Class Codes: G01S 13/52 Discriminating between fixed and moving objects or between objects moving at different speeds
• CPC Class Codes: G01S 13/56 for presence detection presence detection using near field arrangements G01V3/00, e.g. G01V3/08, G01V3/12; burglar, theft or intruder alarms with electrical actuation G08B13/22 - G08B13/26
• CPC Class Codes: G01S 7/003 Transmission of data between radar, sonar or lidar systems and remote stations
• CPC Class Codes: G01S 7/03 Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver

Abstract

The present invention is a radar platform that detects intruders and wirelessly reports to a key-fob. The entire radar platform is water-resistant and two banks of batteries are included for convenience or extended operation time. The device consists of a MicroPower Radar (MPR), a data acquisition (DAQ) element and a processor. Radar sends a short, low-amplitude signal of radio-frequency (RF) energy toward the target. This signal reflects from the target and is received as a Doppler change in signal amplitude. The radar'"'"'s RF energy is in the radio frequency band and operates at much lower powers than many mobile devices such as cell phones. This Doppler System change in signal amplitude is filtered, amplified and presented to the DAQ. The DAQ converts the analog Doppler signal into a digital bit-stream and passed to the radar processor. Proprietary software analysis is performed to further filter and to make an alarm determination.

Claims

1. A radar detection system consisting of:

a water resistant case;

said case enclosing a first and a second battery bank, processor, a data acquisition element, a MicroPower radar, and an encrypted radio link wherein

the micropower radar emits a short, low-amplitude signal of radio-frequency energy in the UHF band,

said signal reflects from moving targets and is received as a Doppler change in signal amplitude that is filtered, amplified and presented to the data acquisition element;

said data acquisition element converts the analog Doppler signal into a digital bit-stream and passed to the processor;

software analysis is performed to further filter and to make an alarm determination;

an external switch on the case for selecting the desired battery bank;

an external battery monitor meter located near the on-off switch on the case;

a water resistant antenna

a three-piece antenna comprised of three antenna elements;

a remote Key-fob.

3. The radar detection device of claim 1 wherein the key-fob indicators and controls includes Arm/Disarm button and orange lighting means;

Transmit/Receive button and green lighting means;

Auxiliary button and yellow lighting means;

Alarm/Siren button and Red lighting means;

an Arm Button;

a Disarm Button;

a Panic Button; and

an Auxiliary Button.

4. The radar detection device of claim 3 wherein

the arm button turns on the radar and enables alarm transmissions to the key-fob by pressing the button for one second, a green transmit light will flash during transmission and upon receipt of the command, the radar returns a confirmation with a single beep and the orange light will flash three times;

the disarm button turns off the radar and disables alarm transmissions to the key-fob by pressing the button for one second, a green transmit light will flash during transmission and upon receipt of the command, the radar returns a confirmation of four beeps and an orange light will flash six times and a red light will illuminate for three seconds;

the Auxiliary button enables a silent mode via a short press of a duration less than 1 second before pressing the Arm button or can confirm the link between key-fob and radar via a long press of a duration longer than 1.5 seconds; and

a long press of a duration longer than 2 seconds on the panic button enables a paging function.

5. The radar detection device of claim 3 wherein

when an alarm is detected, the radar sends a signal to the key fob and ten beeps with six red LED flashes;

the alarm will repeat every 100 seconds until confirmed;

clearing the alarm is accomplished by pressing any button on the key-fob;

commands are disabled while the alarm is active and the green light remain off;

he clearing operation will not send a command;

pressing a command button after acknowledging an alarm will send a command; and

if the radar receives multiple or continuous alarms, it will hold-off re-reporting alarms until there are thirty continuous seconds without alarm.

6. The radar detection device of claim 3 wherein

the remote control key-fob operates on a single standard AAA alkaline battery;

when the key-fob battery run low, the key fob will emit two long beeps five seconds after each transmission, repeating three times every 25 seconds signaling that the battery needs replacement;

once batter replacement has occurred, all icons will light and all tones will sound as a test of all indicators;

if the key-fob is out of range, commands will not be acknowledged by a page and a warning is sent form the radar to the key fob and three quick beeps will be repeated twice and the light will flash six times;

moving the key-fob closer to the radar and reconfirming with the Auxiliary command button resets the system.

7. The radar detection device of claim 1 wherein the radar is a pulse Doppler design with moving target indicator which creates a zone or bubble of detection in such a manner that any motion within the bubble results in an analog signal reported at the output of the radar.

8. The radar detection device of claim 1 wherein the radar has a 160 ft Radar Detection Zone and the radio has a 1000 ft max Radio Range.

9. The radar detection device of claim 1 wherein the radar further consists of a narrow filter that attenuates frequencies above five hertz by a factor of twelve dB per octave reduces unwanted signals and said filter has a passband of 0.3 Hz to 100 Hz.

10. The radar detection device of claim 9 wherein motion sources outside a range gate on the radar are attenuated and signal processing is utilized to mitigate noise.

2. The radar detection device of claim one wherein

the three-piece antenna is disassembled and stored inside the front cover of the Radar Platform;

each antenna element is further comprised of a series of indented lines printed around each end of each element and male and female threads for connection;

a first antenna element consists of a one indentation female threaded end;

a second antenna element consists of a one indentation male threaded end and a two indentation female threaded end;

a third antenna element consists of a two indentation male threaded end and a three indentation female threaded end;

the antenna elements are threaded together in such a manner that the one indentation female threaded end of first antenna element is threaded to the one indentation male threaded end of the second antenna element and the two indentation female threaded end of the second antenna element is threaded to the two indentation male threaded end of the third antenna element, and the three indentation female threaded end of the third antenna element can be threaded to the radar case.

11. A radar system consisting of

a case enclosing a MicroPower Radar, a data acquisition element and a processor wherein

the MicroPower Radar sends a short, low-amplitude signal of radio-frequency energy toward a target that is reflected from the target and received as a Doppler change in signal amplitude;

the received Doppler change in signal amplitude is filtered, amplified and presented to the data acquisition element which converts the analog Doppler signal into a digital bit-stream that is passed to the processor;

software analysis is performed to further filter and to make an alarm determination; and

providing a user interface through a Hirose connector located on an external surface of the case.

12. The radar system of claim 11 mounted near the top of another device such that the antenna penetrates through the top of the device and antenna is mounted away from other antennas on the top edge of the device.

13. The radar system of claim 11 wherein the radar enables 65 m operation and is a pulse Doppler design with moving target indicator and creates a bubble of detection so that any motion within the bubble results in an analog signal reported at the output of the radar.

14. The radar system of claim 11 further comprising dual range gates at 13 and 65 m with Passbands of 0.03 to 5 Hz for detection of slow walking to fast running targets and a Passband of 0.03 to 5 Hz for detection of slow walking to fast running targets.

15. The radar system of claim 14 further comprising a narrow filter that

attenuates frequencies outside the passband by a factor of twelve dB per octave;

reduces broadband electronic noise which is modeled as Gaussian noise in the narrow, near baseband, passband of interest; and

has a passband of 0.1 Hz to 7 Hz.

16. The radar system of claim 15 wherein

motions sources outside the range gate are attenuated;

and

signal processing is utilized to mitigate noise such where the signal is converted from analog to digital and a software processes analyses the signal to produce a result.

17. The radar system of claim 16 wherein

a Fourier analysis is performed to convert a time series signal into a frequency representation, which breaks the signal down into its frequency components;

the signals are sorted by their frequency components into their respective frequency bins; and

expected heart rate bins are then be compared to noise bins and a threshold set.

18. The radar system of claim 17 wherein signal processing includes dynamic thresholding providing means for the radar to better adapt to various noise environments.

19. The radar system of claim 18 further comprising a set of diagnostic software that displays the raw radar output signal and is used to determine when and what problems exist.

20. The radar system of claim 19 wherein

the radar sensor requires a single, regulated 3.3 V power source capable of providing 500 mA;

sensitivity is set at 1.2 mV/cm2@1 Hz;

the near Doppler Passband is set at 0.1-7 Hz;

the far Doppler Passband is set at 7-160 Hz;

that Dynamic Range is set at 113 dB; and

Voltage is 3.6V at a Current of 18 mA.