Ultrasound Transducer Simulation Page
BioSono provides a cyberspace (www.biosono.com) where researchers, engineers, and students can find useful reference and educational materials, conduct acoustic simulation, post questions on design and development, and get answers. The online KLM based transducer acoustic stack simulation, which is currently free, can help you choose piezoelectric, matching and backing material, and a tuning electrical network. The output from the model includes electrical transmit impedance, acoustic receive impedance, and the impulse or pulse-echo response. The ultrasound beam profile simulation provides the calculated transmitted ultrasound pressure field under certain excitation for a given transducer aperture in a number of different geometrical configurations, including circular elements (flat and concave piston), rectangular elements, linear arrays, convex arrays, and 2D arrays. The simulation is based on Field II, which is a free program that utilizes the spatial impulse response method, and has been validated by many researchers for accuracy. In addition to the web based acoustic simulation, we also provide pulse-echo system, transducers, and customized design and develop services.
ultrasound beam simulation longitudinal view
ultrasound beam simulation cross view
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Ultrasound Electronics
SonoLab Echo I Description
The board is powered by a 7 - 15V DC power supply. There are voltage regulators on the board to generate 3.3V for digital circuits including a FPGA and a microcontroller, 5V and -5V for amplifiers. A special step up circuit is used to generate the high voltage for ultrasound transmitting. A microcontroller is used to receive all the controls from buttons or PC, and echo back information to LCD or PC. Registers inside FPGA are used to store parameters from microcontroller to control ultrasound pule transmitting and echo digitizing.

A protection circuit is used to connect the transducer, the pulser, and the receiver. Two stages of viable gain amplifier (VGA) are used to provide up to 60dB gain to the echo signal with a bandwidth of 90MHz. The voltage for the gain control of VGA is supplied by a 2-channel digital to analog converter. A 100MHz analog to digital converter is used to digitize the amplified echo signal. The digitized echo is first stored in a FIFO inside FPGA, and then read out by microcontroller, streaming out to the serial port.

Several SMA connectors are provided at different amplification stage and the echo can be observed by oscilloscope directly with synchronization from the trigger signal.
    Items included in the package
  • Sonolab Echo I board
  • AC/DC adapter: 9V/1.3A
  • User Manual
    Unit Price depends on quantity:
  • 1st : $2000
  • 2nd : $1500
  • 3rd : $1000
  • 4th and more : $750
Quantity and Cost
Single Element Transducer
Frequency
Amount

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