The present disclosure provides a system and method for real-time visualization of a material during ultrasonic non-destructive testing. The system includes a graphical user interface (GUI) capable of showing a three-dimensional (3-D) image of a composite laminate constructed of a series of two-dimensional (2-D) cross sections. The GUI is capable of displaying the 3-D image as each additional 2-D cross section is scanned by an ultrasonic testing apparatus in real time or near real time, including probable defect regions that contain a flaw such as a hole, crack, wrinkle, or foreign object within the composite. Furthermore, in one embodiment, the system includes an artificial intelligence capable of highlighting defect areas within the 3-D image in real time or near real time and providing data regarding each defect area, such as the depth, size, and/or type of each defect.

Automotive radar systems may employ a reconfigurable connection of antennas to radar transmitters and/or receivers. An illustrative embodiment of an automotive radar system includes: a radar transmitter; a radar receiver; and a digital signal processor coupled to the radar receiver to detect reflections of a signal transmitted by the radar transmitter and to derive signal measurements therefrom. At least one of the radar transmitter and the radar receiver are switchable to provide the digital signal processor with signals from each of multiple combinations of transmit antenna and receive antenna.

Embodiments of the present specification provide a target recognition method, apparatus, and system. The method comprises: obtaining an image recognition result and a radio frequency recognition result of target objects in a target region, and then determining the distribution of the target objects in the target region according to the radio frequency recognition result and the image recognition result. Since the radio frequency recognition result and the image recognition result are fused, the target objects in the target region can be accurately recognized, so as to improve the recognition accuracy.

A transmit/receive system for an imaging device includes a transmit circuit configured to generate and output test pulses to a transducer of a probe to cause the probe to propagate an ultrasonic wave through an object. A receive circuit is configured to receive, from the transducer, a composite signal that includes the test pulses output by the transmit circuit and a reflected signal corresponding to reflected waves sensed by the transducer in response to the ultrasonic wave propagated through the object and filter the test pulses from the composite signal and output the reflected signal in accordance with a predetermined minimum frequency of the reflected signal.

For phase inversion-based ultrasound imaging with a transmit and receive circuit at an array, a unipolar transmitter is used to reduce the number of high voltage wires. Rather than adding a T/R switch or increasing connections by connecting the receive amplifier to a different electrode than the transmitter, two different receive paths from the element to the receive amplifier are provided. One path is used where the unipolar transmitter ends in one state (e.g., 0V), and the other path is used where the unipolar transmitter ends in another state (e.g., Vtx).

Circuitry for an ultrasound device is described. The ultrasound device may include a symmetric switch positioned between a pulser and an ultrasound transducer. The pulser may produce bipolar pulses. The symmetric switch may selectively isolate a receiver from the pulser and the ultrasound transducer during a transmit mode of the device, when the bipolar pulses are provided by the pulser to the ultrasound transducer for transmission, and may selectively permit the receiver to receive signals from the ultrasound transducer during a receive mode. The symmetric switch may be provided with a well switch to remove well capacitances in a signal path of the device.

Circuitry for ultrasound devices is described. A multilevel pulser is described, which can provide bipolar pulses of multiple levels. The multilevel pulser includes a pulsing circuit and pulser and feedback circuit. Symmetric switches are also described. The symmetric switches can be positioned as inputs to ultrasound receiving circuitry to block signals from the receiving circuitry.

Portable ultrasound systems and associated devices and methods for managing power in such systems are disclosed herein. In one embodiment, a method for conserving power in a portable ultrasound system includes disabling one or more first amplifiers and/or at least one or more first analog to digital converters (ADCs) upon initiation of a first pulse repetition interval (PRI). The method further includes, upon initiation of a second PRI, enabling the one or more first amplifiers and/or the one or more of the first ADCs and disabling one or more second amplifiers of and/or one or more second ADCs.

A diffuse optical tomography (DOT) system for generating a functional image of a lesion region of a subject is described. The DOT system includes a source subsystem configured to generate optical waves, a probe coupled to the source subsystem and configured to emit the optical waves generated by the source subsystem toward the lesion region and to detect optical waves reflected by the lesion region, a detection subsystem configured to convert the optical waves detected by the probe to digital signals, and a computing device including a processor and a memory. The memory includes instructions that program the processor to receive the digital signals sent from the detection subsystem and perform reconstruction using a depth-regularized reconstruction algorithm combined with a semi-automated interactive convolutional neural network (CNN) for depth-dependent reconstruction of absorption distribution.

The present disclosure discloses an ultrasonic ranging method as well as an apparatus, and a robot using the same. The method includes: obtaining ultrasonic ranging data detected by a preset ultrasonic sensor; filtering the ultrasonic ranging data to obtain the filtered ultrasonic ranging data; determining whether a measured distance of a target sampling point meets a preset stability determination condition, where the target sampling point is any sampling point in the filtered ultrasonic ranging data; and recording and outputting the measured distance of the target sampling point, if the measured distance of the target sampling point meets the stability determination condition. According to the present disclosure, after the ultrasonic ranging data is filtered, the measured distance of each sampling point in the ultrasonic ranging data is further determined through the preset stability determination condition, which greatly reduces the probability of the occurrence of false alarms.