Sonar Transducer Calibration in a Controlled Pressure‐Temperature Environment

Transducers and Transducer Calibration

ed from: Figliola, R.S. and Beasley, D. S., 1991, “Theory and Design for Mechanical Measurements” GENERAL MEASUREMENT SYSTEM Assigning a specific value to a physical variable is done with the help of a measurement system. Once a value has been assigned to a physical variable it becomes known as a measured value. There are four stages to the process of assigning a value to a physical variable. G...

A Strain Gauge Torque Transducer Calibration Study

-This paper presents for the study of torque transducer (torque sensor) calibration built into a rotating shaft, in this case uses strain gauge, which was done with, and the output signal of the "voltage (mV/V)" has been taken for each weight, increasing and decreasing the weights. The data have been taken three times which they have been divided into three series. First and foremost, the avera...

Sonar Resolution-Based Environment Mapping

Ultrasonic range sensors are used to obtain the information required for collision{free navigation of a mobile robot in a semi-structured or unstructured environment. A set of range readings from a ring of sonars are correlated to acquire a 2-D map of the robot's environment. The map is continuously enhanced via novel matching and update algorithms as new data are collected while the robot is i...

Shock-Tube Calibration of a Fast-Response Pressure Transducer

On Waveform Selection in a Time Varying Sonar Environment

The best waveform to use in different scenarios has always been an issue for the Navy. Waveform choice is often based on minimising the effects of reverberation or searching for a feature of the target such as Doppler. A recent paper on environmental acoustics [1] showed that in a time varying environment, the probability distribution of received signal energy changes with the type of waveform ...