A jammer helps you ensure that all mobile phones are switched off

aprile 12, 2010 Technology No Commenti

MJ 2000

There are certain situations in which one must make sure that, within a certain environment, no external interferences are present. For example, during a classical music performance, it is advisable to do the utmost in order to have everyone switch off their mobile phones, in order to avoid inconveniences for musicians and listeners alike.

During a confidential meeting or a conference, someone might have forgotten to switch off their mobile phone or, worse, might use it to leak out some information which is supposed to remain private.

In order to protect privacy, silence and confidentiality of your information, it is therefore advisable to take proper protection measures, by using a defensive system such as a mobile phone jammer. A jammer is a device which, when you are not physically able to lay your hands on each and every cellphone to switch it off, works on the radio waves in the room or hall that you wish to protect.

The cellphone jammer can be as small as a pack of cigarettes, and it transmits disturbance waves, which basically hamper all communication with devices present in the area, be they all type of mobile phones (GSM, UMTS and 3G), WiFi networks and Bluetooth connections, within an operating range of about 15 meters.

The owner of a cellphone within this range will not notice the jammer’s disturbing action, but will only be able to notice that his handset has no reach, and he or she will not be able to do anything to communicate with the world outside.

A secure and crash-proof police van keeps all passengers safe

aprile 12, 2010 Technology No Commenti


When police forces carry out some operation which involves arresting criminals and carrying them towards the police station or prison, making sure that all passengers of the police van are safe is an absolute priority, either to protect policemen from any reaction that the arrestee might have towards them, or to keep the latter safe from harmful consequences in case of accident or impact.

To meet this need for security, the British car manufacturer Vauxhall has started the production of a particular model of its Vivaro van, which has been fitted with a real prison cell in the back.

A special attention was paid to the security and safety of the unwilling passenger sitting in the back, especially in consideration of the high risk conditions in which police van drivers have to operate, which can represent a potential danger for the security of all passengers. Under this point of view, the Vivaro cell has passed a series of crash tests which proved its sturdiness and resistance to impact, achieved not only by using the right materials, airbags and the like, but also by using a particular seating plan which minimizes the risk of collisions between passengers accommodated in the back of the van.

The Vivaro Prison Cell van, after this testing round, will in the near future be delivered to 54 different police stations across the United Kingdom for a trial period. Once the results of the trial are evaluated, this van might start its service at all stations of Her Majesty’s Police, to carry up to 6 passengers safely and with no risk for their security.

Another underwater vehicle, completely self-powered

aprile 12, 2010 Technology No Commenti


Just a few posts ago, we were talking about an underwater robot, and once again we are reporting a newcomer in this particular field.
Solo-Trec is an unmanned underwater vehicle (UUV), capable of autonomously generating the necessary electricity for providing propulsion to the vehicle itself, as well as for powering the systems placed on board, by exploiting fully renewable energies.

In fact, this vehicle is powered by an engine which gets recharged thanks to the differences in temperature that can be found at different depths. What makes this recharging operation possible is the presence of materials called “phase-change”, housed inside some tubes which expand or contract depending on the changes of temperature of the surrounding water.

When tubes expand or contract, the oil contained inside would move, thus generating motion in the hydraulic engine necessary to recharge the batteries, which in turn provide power to the engine used for the vehicle’s motion.

The Solo-Trec vehicle, developed by a NASA research team, in cooperation with University of California, can be equipped with scientific instruments and GPS receiver to determine position and route, and has been tested with more than 300 dives up to a depth of 500 meters, as well as an endurance test, which have been carried out in the waters off the coast of Hawaii.

A system like this, thanks to its endurance characteristics, can be used for scientific purposes, such as a long-term monitoring of the conditions of the sea, by using the correct equipment for this job.
Alternatively, by providing Solo-Trec with video surveillance equipment, it can be used for monitoring operations to ensure security in the waters around particularly sensitive targets or locations. And all this can be achieved while using a clean and unlimited source of energy.


aprile: 2010
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