Featured Research

from universities, journals, and other organizations

Acoustic Sensor Technology Saves Manatees

Date:
March 27, 2000
Source:
Office Of Naval Research
Summary:
ONR-supported scientists contributed a key technology to the new, highly successful Manatee Protection System designed by the Harbor Branch Oceanographic Institution. The system saved the lives of five manatees during its installation and early testing at the Port Canaveral lock gates in Florida.

ONR-supported scientists contributed a key technology to the new, highly successful Manatee Protection System designed by the Harbor Branch Oceanographic Institution. The system saved the lives of five manatees during its installation and early testing at the Port Canaveral lock gates in Florida.

Manatees are large marine mammals, streamlined in shape, with adults averaging 1,000 to as much as 1,500 pounds in weight. Adults reach a length of about 12 feet. They are an endangered species that, due to their slow maneuverability and penchant for warm water off the coast of Florida, often get killed in collisions with boats or by entrapment in man-made structures and nets. The new protection system at Port Canaveral, operated by acoustic sensors, is designed to prevent the lock gates from closing if a manatee is detected. This system will reduce risk, injury and mortality of manatees and enhance the Port's manatee protection efforts.

The Manatee Protection System contains a total of 320 individual sensors installed in sensor "packages" of 10 sensors each, with eight such packages on each gate. The engineers who designed the system wanted ultimate safety and redundancy; any one sensor can go off-line without disabling the entire system. The system operates similar to a garage door opener that immediately stops if it senses someone or something beneath the door. At Port Canaveral, a break in the acoustic signal alerts the gates to stop closing, giving any manatees time to get clear of the gates.

The ONR Materials Division initiated development of the piezoelectric material used in the acoustic-based sensor system that can react to the passage of a manatee in a tenth of a second. Funding for the project was awarded through ONR's Small Business Innovation Research Program. Additional funding was provided by the Defense Advanced Research Projects Agency.

A piezoelectric material tranforms electrical energy into mechanical energy and vice versa. Installing the new Manatee Protection System at Port Canaveral consisted of retrofitting both gates of the Canaveral lock structure with an acoustic system composed of emitter and receiver units. The units are made from state-of-the-art piezoelectric composite transducer elements. Some other applications of the system's composite transducers are submarine sonar, surface ship mine hunting, nondestructive testing, medical ultrasound, and seismic exploration.

--USN--

The Office of Naval Research pursues an integrated science and technology program from basic research through manufacturing technologies. Research areas include oceanography; advanced materials; sensors; electronics; surveillance; mine countermeasures; weapons; and surface ship, submarine and aircraft technologies. For more information about ONR programs, refer to the ONR home page at http://www.onr.navy.mil on the World Wide Web.


Story Source:

The above story is based on materials provided by Office Of Naval Research. Note: Materials may be edited for content and length.


Cite This Page:

Office Of Naval Research. "Acoustic Sensor Technology Saves Manatees." ScienceDaily. ScienceDaily, 27 March 2000. <www.sciencedaily.com/releases/2000/03/000327084708.htm>.
Office Of Naval Research. (2000, March 27). Acoustic Sensor Technology Saves Manatees. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2000/03/000327084708.htm
Office Of Naval Research. "Acoustic Sensor Technology Saves Manatees." ScienceDaily. www.sciencedaily.com/releases/2000/03/000327084708.htm (accessed July 25, 2014).

Share This




More Matter & Energy News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com
Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile: iPhone Android Web
          Follow: Facebook Twitter Google+
          Subscribe: RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins