A wall is not enough to stop you from listening

luglio 15, 2010 Technology No Commenti

If law enforcement agents should not be able, due to the infamous gag bill being discussed in Italy, to use telephone wiretapping at its best to gather intelligence and evidence against dangerous criminals, they should resort to alternative methods. For example, during an operation that involves chasing the suspect, an undoubtedly vital tool is the so called wall microphone.

A classic situation that may happen during an investigation occurs when agents need to follow the suspect during its movements, and the guy, to remain unnoticed, takes a room in a hotel. In such situations, agents will have to try and take lodging in the next room, in order to start doing their job.

To gather information in such cases, one can use a wall microphone, equipped with a stethoscope that resembles exactly the one that our doctor would use, but is connected to an amplifier. Just place the stethoscope against the wall to pick up the smallest vibrations caused by conversations taking place in the next room, without arising any suspicions in the people inside it.

For this task, there are several types of wall microphones available, ranging from those that look like a stethoscope to micro bugs that can be placed on the outside of a window, and can pick up voices inside the room by reading the vibrations in the glass, and transmitting the gathered intelligence to an agent hidden within a few hundred meters. This method involves a lower risk level, as detectives would not need to be too close to the suspects.

To have more information on how wall microphones are working, and how it can help you to gather the intelligence you need, we recommend that you visit the Endoacustica website.

No more wheelchairs: here comes the robotic exoskeleton

luglio 15, 2010 Technology No Commenti

Those who are forced to use a wheelchair to move around know perfectly how life can be complicated, not only in the difficulty they have to face when negotiating the smallest obstacle such as, for example, a sidewalk, but most of all in the feeling of having to depend on others at all times and in all occasions even for their basic needs.

Finally now, after seven years of studies and fine tuning, the New Zealand based Rex Bionics has launched its exoskeleton, which aims at making life a lot easier for paraplegic patients, and to allow them to leave the wheelchair and start moving not on wheels while sitting, but on two legs, albeit robotic, while standing.

The Rex exoskeleton is capable of standing a person’s weight, and is controlled thanks to a joystick, allowing its user to carry out tasks apparently as easy as 1-2-3, but impossible for those who can’t use their legs; in fact, thanks to it, it will be possible not only to stand up and walk, but also to go up and down a flight of stairs or an upward or downward slope.

Apart from immediate benefits from a physical point of view, and concerning movement and self-sufficiency, thanks to Rex patients will not only improve their morale and live their condition in a better way, but will also be able to improve their physical conditions in the long term.

For example, the risk of muscular atrophy and decubitus ulcers will be minimized, keeping the patient in a better shape which will help them, if awaiting a therapy or a surgery, not only to face it but also to better go through the post-surgery process.

The only problem is the 150000 dollar price tag, but the possibility to walk and lead an almost normal life is priceless!

Telecommunication buoys for submerged submarines

luglio 15, 2010 Technology No Commenti

The aerospace and armament US giant Lockheed Martin has just completed, in cooperation with other industries in the electronics field, a test run on a communications program called CSD (Communications at Speed and Depth).

It is a telecommunication system that allows submarines of any class in service with the US Navy to stay under the water without needing to go back up to periscope level to communicate with other ships, planes or with the ground-based control center. Normally this is the moment of highest risk for submarines, which are more exposed to enemy fire or danger of being intercepted just when they come up to sea level.

The CSD, for which Lockheed Martin has been granted a $35 million contract, is made up of a series of floating buoys, which are launched by the submarine and are tethered to it via a cable. The buoys are equipped with antennas for telephone communication through the Iridium network, and for very high frequency radio transmission. The floating antennas receive incoming communications coming from the ground base via a satellite, and use the same connection to send signals back to the ground.

Another buoy turns acoustic signals into radio waves, allowing the submarine personnel to communicate with any airplanes stationing or passing above the sea.

Thanks to CSD, submarines will be constantly connected to the global telecommunication network, without having to face unwanted dangers when emerging. The continuous connection allows not only to minimize this kind of danger, but also to ensure a higher operational flexibility, so that a mission’s schedule can be changed instantly at any time, without having to wait for the next reemergence.


luglio: 2010
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