k-Wave

1. romy_budhi
   

   Member
   Joined: Jan '16
   Posts: 6

   Hi every one,
   Recently I want to simulate Piezoelectric ultrasonic sensor transmitter and receiver in different position, however in the same simulation grid. It was designed using 3 transmitters and 5 receivers. I used Murata MA40S4R/S
   [the datasheet is in: " https://www.dropbox.com/s/soq050cy4vxns3q/MURATA-zdMURATA_Ultraschall-Sensor-MA_EN.pdf?dl=0 " ]

   I tried to study about Example: Monopole Point Source In A Homogeneous Propagation Medium and
   Example: Dipole Point Source In A Homogeneous Propagation Medium

   But I do not know how to make the directivity graph to be in simulation as in page 4 of the datasheet.
   Could anyone help me and give the direction how to simulate those kinds of transmitter and receiver?
   Thank you in advance.

   romy

   Posted 8 years ago #

2. romy_budhi
   

   Member
   Joined: Jan '16
   Posts: 6

   Hi every one,
   The illustration of the position of transmitter and receiver is like in this figure:
   [web: "http://i.stack.imgur.com/gTcs6.png"]

   Could anyone give an enlighten? Thank you.

   Posted 8 years ago #

3. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,643

   Hi Romy,

   It's currently not possibly to directly enter a directivity map to use in k-Wave. However, in your case, the directivity observed is likely to be dominated by the finite size of transducer (e.g., the recorded signal will be spatially averaged over the transducer surface). In this case, you could start by setting up a simulation where the source (transmitter) and sensor (receiver) masks have the same physical size as given in your datasheet. On transmit, use a single drive signal for all the grid points that form part of each transmitter. On receive, average the signals recorded over all the grid points that form part of each receiver.

   Hope that helps,

   Brad.

   Posted 8 years ago #

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