GBPPR Remote Respiration/Heart Beat Monitor Experiments |
A few weeks ago in a city not too far away...
UNION WARS
It is a period of civil war. Tea Party patriots, voting from their heart, have won their first victory against the evil Obama Zionist Empire.
During the election, Tea Party spies managed to uncover plans for the Empire's ultimate weapon, the JEW JUDGE, an unelected position with enough power to destroy an entire White nation.
Pursued by the Empire's sinister jackbooted thugs, local Tea Party patriots raced home aboard their non-government bailed out vehicles, custodian of the information that can save Wisconsin and restore freedom to the country...
Introduction
With the recent onslaught of staged union protests and general manufactured outrage taking place all over Wisconsin, if we've learned anything, it is just how dishonest and downright corrupt our politicians and mainstream media have become.
I personally witnessed a media report on how some "poor" government-union snowplow drivers in Wisconsin are may loose their "right" to negociate outrageous contracts and pension plans on the taxpayer's back (the horror!), or be forced to pay for some of their own medical insurance - like the rest of us. What that media report failed to mention is some of those "poor" snowplow drivers make $60-an-hour overtime - and they are not exactly the more efficient workers.
Then there are the public school teachers, which I am all too familiar with. The Green Bay public school system always seems to complain about not having enough funds (with politicians calling for the ever-increasing taxing of hard-working Gentiles), but the school system just managed to install a fancy new $100,000 MotoTRBO radio system! I could have built them a decent radio system for a fraction that price... The schools here are also spending hundreds of thousands of dollars (probably millions when everything is finished) on new security cameras and other monitoring devices. That's odd, as I spent twelve years in various Green Bay public schools and never felt the need to be under constant video surveillance. Maybe it's really because the local union "leadership" is in bed with the companies doing the installation work and contract bidding (hint, hint). Those "poor" and "overworked" teachers in Green Bay also have no problems with using a teacher convention or parent/teacher conference day-off to go shopping or on vacation, or playing Angry Birds on their taxpayer-funded cellphone all day. They also seem to have no problems with using school computers and resources to distribute pro-John Kerry (2004), pro-Barack Obama (2008), or just general liberal propaganda, into other teacher's mailboxes. One nutty Green Bay teacher was even using school resources to spread an anti-Iraq war petition - during school hours! An even nuttier teacher told his students the recent BP oil spill was caused by Sarah Palin! (Note that Obongo's Chief-of-Staff Rahm Emanuel [Jew] lived in an apartment paid for by BP's Stanley Greenberg [Jew] for five years). Still don't think public schools are nothing more than taxpayer-funded Marxist indoctrination facilities? Wake up!
There is also a teacher at a certain Green Bay high school who routinely sleeps during school hours, but the corrupt union won't do anything as they provide "diversity" (hint, hint). I can name dozens of other examples, mostly with public schools wasting technology resources by throwing away things which are trivial to fix, or from being Jew'd into purchasing proprietary computer hardware, unnecessary upgrades, and high-priced software. Oh, and don't get me started on not cutting high school football, or other sports funding, when budget time comes around...
If you think that's bad, just wait until you learn the corrupt union members in the Green Bay Police department routinely cover up illegal activities both internally and those conducted by the Green Bay Packers organization. These include include illegal drug and steroid use, money laundering, sexual molestation, and even insider real estate dealings with the land and buildings surrounding Lambeau Field. Some corrupt Green Bay cops even do this while being paid overtime doing security at a game! Union power!
If there is one thing that defines just how evil the Obama regime is - it's corrupt public sector unions and their thug leadership. Funny, you didn't hear much about any of this in the media, did you? I'll bet you heard all about the Koch brothers... Those guys who own several paper manufacturing plants in Wisconsin which hire thousands of local employees, who can then feed their families, pay their mortgages, send their kids off to college, and of course - pay taxes. You know, that magical system a teacher's salary comes from. By the way, people like Michael Moore have no employees in Wisconsin, and when Hollywood filmed those shitty Saturday Night Live spin-off movies in Wisconsin, the studio's requested tax breaks and used non-union labor...
It's almost like the Jewish media outlets are covering for the corrupt Jewish labor unions and attacking anyone who dares expose their plans...
So how can a honest man fight back? You can start by putting these assholes under some form of electronic surveillance. Try to plant technical surveillance devices at known union and Democrat meeting locations, or even in the homes of any corrupt union leaders or government employees.
All this brings us to our next project... A device which can remotely detect a subject's respiration or heart beat by using a narrow beam of microwave energy. This is very useful in technical surveillance operations to help notify you if a person is still inside a building you wish to physically penetrate.
The remote detection a target's heart beat has the potential for a much more sinister plot. By pulsing a high-energy RF signal at just the right time, it may be possible to induce some type of heart arrhythmia or cause some other biological malfunction, in your target. Just make sure to aim your new toy at only Democrats...
Overview
This experimental project is for a device which can be used to extract the respiration or heart rate signal from an individual by using only a beam of microwave energy in the X-band (10 GHz) region. The main circuit consists of a commercial Doppler microwave unit followed by a low-noise 40 dB preamplifier and sharp 5 Hz low-pass filter. All the signals we wish to detect will be in the sub-10 Hz region.
The contraction and expansion of the heart and lungs will impose motion on the target's chest wall. We can detect these changes as a slight Doppler shift in the reflected microwave beam. The final received signal can then be further processed to determine the frequency of these cardiopulmonary events.
The respiration (breathing) rate will be the easiest signal to detect, as the chest cavity movement is on the order of several millimeters, compared to only the faint surface vibrations of the heart beat. Medical literature lists the period of a human's respiratory rate as being between 3 and 30 breaths per minute (16-24 average), with the heart rate varying from 40 to 200 beats per minute (43-94 average). This corresponds to a possible frequency range of 0.05 - 0.5 Hz for respiration rates, and 0.6 - 3.3 Hz for the heart rate.
This particular experimental setup will be using a Microwave Solutions MDU1100 X-band Doppler integrated motion detector unit. These little modules require only three connections, a clean source of +5 VDC, the Intermediate Frequency (IF) output with an impedance of around 400 ohms, and ground. The MDU1100 module has built-in antennas for both transmit and receive. They operate at around 10.5 GHz and have a RF output power (EIRP) of approximately +13 dBm (20 mW). A higher powered Gunnplexer module from an old X-band police radar can also be used and will increase the overall detection range.
At 10.5 GHz, the air-skin barrier is fairly reflective to the RF energy. The wavelength of the transmitted signal will dictate the system's overall spatial resolution. At 10.5 GHz, the wavelength is 2.8 cm and the penetration depth in human tissue is only around 0.3 mm, though this seems to vary based on the medical literature I've found. Operating at higher frequencies will provide you with the ability to more easily "zero in" on an individual target, but the RF signal will be severaly attenuated by any barriers between the radiating antenna and the target. A lower operating frequency will better penetrate most barriers, but you'll loose the resolution and the antenna system will be significantly larger. All this will need to be taken into consideration if you intend to use a device like this to locate victims trapped under debris or as a Sudden Infant Death Syndrome (SIDS) monitor for newborn babies.
Because the final output signal will contain very low frequencies, which will not be directly "listenable" to a human being, we'll need to digitally record the signal or at least transvert it to something easier to manage. DATAQ Instruments has sevearl data acquistion boards available at fairly low-cost. For this project, a DATAQ Instruments DI-194 board will be used. The DI-194 (which is now obsolete) provides 10-bit measurement accuracy in four analog channels, has a +/- 10V analog measurement range, and up to 240 samples/second throughput. It uses a simple RS-232 serial interface which also provides power to the unit. You can use the free WinDAQ software to view and record any signals.

Pictures & Construction Notes

Overview of the low-noise preamplifier and 5 Hz low-pass filter circuit.
The amplifier is based around a Linear Technology LTC1051 "auto zero" precision dual op-amp. It's configured in a standard non-inverting circuit with 40 dB of gain, rolling off at around 7 Hz. A 10 kohm / 100 µF RC network forms a high-pass filter at around 0.16 Hz on the op-amp's input.
A Linear Technology LTC1062 5th-order, Butterworth low-pass filter follows the LTC1051. The LTC1062 can be configured to low-pass filter anything up to 20 kHz. A 6,800 pF capacitor on the LTC1062's pin-5 sets the filter's 3 dB response at around 5 Hz.
The second LTC1051 op-amp is configured as a two-pole 30 Hz low-pass filter. This is to remove any high-frequency clock noise which may pass through from the LTC1062.
Both the LTC1051 and LTC1062 require a clean source of +/- 5 VDC. The power lines to each IC have series 10 ohm resistors, ferrite beads, and a shunt 10 µF capacitor to ground.
Use non-polarized, high-quality, low-leakage capacitors and 1% metal film resistors for maximum performance.

Overview of the Microwave Solutions MDU1100 X-band Doppler integrated motion detector unit.
The four little squares are the transmit and receive antennas.
The connections along the bottom are, from left-to-right: IF output, ground, and +5 VDC. The current draw is around 50 mA.
Detection range can be significantly increased by replacing this module with a Gunnplexer from a high-power X-band Doppler speed radar.

Setting the 3 dB corner frequency for the LTC1062 low-pass filter.
The LTC1062 contains an integrated divide-by-100 counter to determine the cut-off frequency. This means the "Cosc" frequency at pin-5 of the LTC1062 should be 100 times the required 3 dB corner frequency.
In the above photo, the frequency at pin-5 of the LTC1062 is 594.5 Hz with a 6,800 pF polystyrene capacitor installed. This gives a final 3 dB corner frequency of around 5.9 Hz.
Be sure to use a low-leakage and temperature stable capacitor in this timing application.

Overview of the DATAQ Instruments DI-194 data acquistion board.

Using the WinDAQ software.
This is an example of detected chest wall motion caused by the act of breathing.
At frequencies this low, it is best to detect the number of "events" in order to determine if you've received a true signal.
If you detect, say a peak of around 18 and 80 "events" per minute, it's safe to assume you've located a live human being. Those 18 and 80 events in a one minute time frame correspond to the average respiration and heart rate for a healthly adult human.
The heart beat will appear as a series of sharp "spikes" riding on the slow rising respiration signal. Separating those two signals using only common hardware and components is still something I'm working on. This may be a better job for some DSP or software wiz...
There is a schematic for an optional (and untested) signal splitter at the end of this article. This is a low-pass/high-pass filter centered at 0.5 Hz which can be used to break the two signals apart for further processing.


2nd European Symposium on Non-Lethal Weapons
May 13-14, 2003 in Ettlingen, Germany.

Rate Effects in Isolated Hearts Induced by Microwave Irradiation
By James L. Lords, Carl H. Durney, Alan M. Borg, and Charles E. Tinney.


