U.S. wireless micro-sensor network market – Diode Laser System KS3-11312-xxx – fiber dense array
Years ago, science fiction writers once dreamed of, to take advantage of "smart dust" as a tool to detect enemy movements on the battlefield, weapons and transfer.
Today, their dream has come true. American Dust Networks has developed a sophisticated "smart dust" technology, U.S. defense contractor Science Applications International Corporation will become the company's research and development of "wireless micro-sensor networks," the first customer.
"Smart dust" is a tiny as dust, the human eye can not see the sensor. Science Applications International Corporation has been using this sensor, built around an electronic defense systems for its customers?? The United States military to military defense and intelligence information. For example, with rounds of miniature magnetometers to detect whether a person carrying firearms. The company also plans to use the mini phone, to find the vehicle or mobile populations, "acoustic footprint." Some customers the company can drive unmanned aircraft, the number of "smart dust" dropped to rugged areas of bad weather, in order to achieve the purpose of monitoring the enemy.
In the past few years, a number of "wireless 'smart dust' sensors" in the study, manufacturing equipment has been used to monitor vibration, monitor the aggregation of seabirds and measure subtle changes in climate vineyards (vineyard climate change can be very subtle significant impact on wine quality). Now, this micro-sensor has entered the market. In August, a number of retail stores in Minnesota has installed many of these micro-sensors, used to monitor the store's energy use. This is helpful in reducing operating costs, because the cost of energy costs in retail stores to occupy second place. United States, another similar company also announced that they will launch environment for wireless sensor monitoring nuclear power plants.
The emergence of a variety of sensors have been for decades, but because of high cost and large size, and use the wires to the sensors connected to the central monitor, only large companies could afford. In recent years, with the calculation of the falling cost of microprocessors become smaller, science fiction writers imagined "smart dust" has become scientific reality, research and application has been extended to the Government and the private sector. Some researchers are convinced that micro-sensor network could eventually be refrigerators, printers, car keys and other daily necessities connected with the Internet, to achieve long-distance tracking. Hubble Allmendinger, president of Forecasting: smart dust sensors and related technology sales, from 10 million U.S. dollars this year to several billion dollars in 2010. The study in the United States Department of Defense has invested tens of millions of dollars to help the University of "smart dust" sensor technology research and development. CIA's venture capital firm InQ-Tel has purchased the dust network shares, the U.S. Department of Homeland Security researchers have developed micro-sensor as a top priority issue, even Intel is also developing wireless sensor networks.
Analysts predict that these micro-sensor network, will the same as the Internet a great impact on society.
The so-called wireless sensor networks is the use of a large number of tiny sensors to track the various activities, such as climate, light and heat, etc. to assess the surrounding environment. When these sensors to gather useful information, the system opened a low-power transmitters, and data to another device nearby, far transmission distance of up to 30 meters. The micro-sensors using AA batteries can run for 3 years. If the wireless network in a micro-sensor failure, another sensor will immediately replace posts, alternative retirement are receiving data, to enable the network to normal operation. So dust Networks management will this network called "smart mesh."
From 1997 began to study the "smart dust" sensor Pistor University of California computer scientist, said: "micro-sensor is no longer the dream of futurists have been true for customers to deploy." Two years ago, Pistor create the "Dust Networks."
But so is the current wireless micro-sensor network normal operation, also face great challenges. In the realization of network communications links within the normal process, the signal may be interrupted by hills or electrical interference. In addition, the net domestic demand and deployment of a large number of micro-sensors, would bring the cost too high to drive away customers. Nevertheless, the development of wireless micro-sensor networks is still fast. In 2002, Intel Research Laboratory researchers prescription bottle with 32 sensors the size of the Internet, and to read the Maine "Great Duck Island" on the climate, the conditions for evaluation of a Swallow nest. The second quarter of last year, their safety for use with D-150 second-generation micro-battery sensors, to assess the conditions of the nest. Their aim is to allow researchers around the world to achieve non-invasive and non-destructive, sensitive wildlife and habitats monitoring. This year in August, "Dust Networks" produced 22 sensors are installed in the chain of retail stores within the store to monitor the temperature and energy utilization.
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