MetalDetectors
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Smartphone-powered mine detectors readied for field-testing in Cambodia (video)
Red Lotus Technologies is now refining and pitching its PETALS technology for real-world use around the world. Short for Pattern Enhancement Tool for Assisting Landmine Sensing, the system connects acoustic sensors to smartphones, outputting a silhouette of what lies below onto the phone's screen. The company has expanded from an initial research project that paired mine-detecting sensors with the processing clout (and availability of) smartphones. It's now developed some tablet-based training equipment for de-miners and, working alongside the Landmine Relief Fund, aims to field-test the devices in Cambodia before launching them next year.
Metal detectors and smartphones make beautiful, mine-sniffing music together
Harvard researchers have married a smartphone to a metal detector to create PETALS, a low cost way to improve mine detection in third-world countries. Traditionally, locating land mines has required a carefully trained ear to distinguish deadly explosives from, say, a can. This new system removes some of the guesswork by mapping the beeps on a cell phone screen, creating a silhouette of whatever is beneath the surface. Similar results have been accomplished using acoustic sensors, but so far they've been relegated to research projects and would likely be too expensive for use where they're needed most. Not only should the simplicity of PETALS (which stands for Pattern Enhancement Tool for Assisting Land mine Sensing) make it cheap and easy to deploy but, in tests novice de-miners were able to improve their performance by 80 percent -- that's a least a few less brave humanitarians going "boom" in the field.
Scottish police testing metal-detecting gloves
Police in Scotland have begun field-testing a pair of tactical gloves that sport built-in metal detectors for identifying sharp objects during routine pat-downs -- and should they fail to detect a hidden weapon, they're made out of Kevlar to protect the wearer during the ensuing knife fight. Although not specifically mentioned in the source article, it seems the Scottish cops are trying out seven pairs of the HF-1 from Adams Electronics, which are powered by regular 9-volt batteries and vibrate inconspicuously at the wrist to signify that an object has been detected. Available in either "passive active" or "dual active" configurations (depending on whether one or both of the gloves sport a detector), the HF-1s deployed for the trial cost about $370-a-pair, and are being used to supplement the 1,000 or so FriskerPRO-like handheld detectors that are already in use. Overall these seem like a good way for officers to protect themselves without getting too touchy-feely with suspects, but on the other hand, they may just encourage enterprising criminals to step up their game and begin carrying around undetectable weapons like ceramic knives and filed-down toothbrushes.
