Maybe this helps: http://www.iti.tugraz.at/cms/index.php?option=com_jresearch&view=publication&task=show&id=512
Its a master's thesis at the Graz University of Technology "Implementation of an Acoustic Indoor Localization System for WSN" it is implementet on mica2 nodes Best regards Reinhard Am 2011-04-12 11:24, schrieb wangying: > Hello, > > We have been trying to do acoustic ranger application with the micphone of > the mts310CA sensorboard, we have three nodes: > Node1: only sends an RF packet to node2 and buzz the sounder at the same time. > Node2: Receives the RF packet sent from node1 and increments a counter (with > a timer) until it detects the buzzer sound to calculate the distance between > the two motes, then it will send a data packet to the > baseStation node with the counter. > BaseStation node (Node0): receives the data packet from node2 and displays > the counter value. > We are having a problem with node 2 when it detects the buzzer sound, the > problem details are the following: > The surronding noise can also trigger the MicSetting.toneDetected() event > (mts310CA sensorboard), so we can't find the time when detect the buzzer > sound. > We don't know where the problem is exactly! > We really appreciate your help and thank you in advance! > > Best Regards! > > > 2011-04-12 > > > > wangying > --------------------------------------------------------------------------------------------------- > Confidentiality Notice: The information contained in this e-mail and any > accompanying attachment(s) > is intended only for the use of the intended recipient and may be > confidential and/or privileged of > Neusoft Corporation, its subsidiaries and/or its affiliates. If any reader of > this communication is > not the intended recipient, unauthorized use, forwarding, printing, storing, > disclosure or copying > is strictly prohibited, and may be unlawful.If you have received this > communication in error,please > immediately notify the sender by return e-mail, and delete the original > message and all copies from > your system. Thank you. > --------------------------------------------------------------------------------------------------- > > > > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help -- Reinhard Berlach bakk.techn. [email protected] The only thing necessary for the triumph of evil is good men to do nothing. _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
