Magnetic sensor synchronization techniques for pose tracking in artificial reality systems include managing and sending, by one or more primary magnetic sensors, a wireless synchronization signal to other magnetic sensors to trigger sensing sampling. The primary magnetic sensor may generate and send sensor data to a wireless data hub that operates as a sensor data collector and transmits data for pose tracking in the system. Each of the other (non-primary) magnetic sensors, in response to receiving the wireless synchronization signal, updates its sampling starting clock based on new synchronization timing. Each of the magnetic sensors sends generated sensor data to its corresponding primary sensor or wireless data hub according to a different schedule to avoid conflicts between the various magnetic sensors. The synchronization process may be repeated a number of times if a sensor fails to receive or respond to a synchronization signal.

Magnetic positioning systems and methods for use in a robotic surgical system are provided. A multi-axis magnetic field source generates a magnetic field by simultaneously exciting a plurality of axes of the multi-axis magnetic field source with respective source signals that are orthogonal to each other over a period, T. A multi-axis magnetic field sensor detects the generated magnetic field. The detected magnetic field is analysed over an analysis interval which is at least as long as the period, T, to resolve the detected magnetic field into components which are due to the plurality of source signals. The components are used to determine one or both of the position and the orientation of the multi-axis magnetic field sensor relative to the multi-axis magnetic field source.

Magnetic positioning systems and methods for use in a robotic surgical system are provided. A multi-axis magnetic field source generates a magnetic field by simultaneously exciting a plurality of axes of the multi-axis magnetic field source with respective source signals that are orthogonal to each other over a period, T. A multi-axis magnetic field sensor detects the generated magnetic field. The detected magnetic field is analysed over an analysis interval which is at least as long as the period, T, to resolve the detected magnetic field into components which are due to the plurality of source signals. The components are used to determine one or both of the position and the orientation of the multi-axis magnetic field sensor relative to the multi-axis magnetic field source.

A configurable pathway deviation indication system for medical device placement includes one or more user-adjustable pathway boundaries and an indication activated upon reaching or breaching of any of the pathway boundaries. The system may include a medical device configured to be inserted into a patient; a location transmitter configured to transmit a signal related to a position of the medical device; and a detector device configured to receive information related to the patient's body and the location transmitter. The system may be operatively coupled to the location transmitter and the at least one detector device. The system may further include a display and a computing system comprising one or more processors and or more non-transitory computer-readable media. The system can display the position of the location transmitter; determine if the position of the location transmitter reaches any pathway boundaries; and provide the indication when the pathway boundary is breached and/or approached.

A configurable pathway deviation indication system for medical device placement includes one or more user-adjustable pathway boundaries and an indication activated upon reaching or breaching of any of the pathway boundaries. The system may include a medical device configured to be inserted into a patient; a location transmitter configured to transmit a signal related to a position of the medical device; and a detector device configured to receive information related to the patient's body and the location transmitter. The system may be operatively coupled to the location transmitter and the at least one detector device. The system may further include a display and a computing system comprising one or more processors and or more non-transitory computer-readable media. The system can display the position of the location transmitter; determine if the position of the location transmitter reaches any pathway boundaries; and provide the indication when the pathway boundary is breached and/or approached.

A system and method for shaped wave patterning for EMF tracking. The waves are shaped at the source, when generating the input signal. The waves may be shaped as square patterns or triangular patterns.

A system and method for shaped wave patterning for EMF tracking. The waves are shaped at the source, when generating the input signal. The waves may be shaped as square patterns or triangular patterns.

A method for magnetic ranging includes switching an electromagnet deployed in a target wellbore between at least first and second states and acquiring a plurality of magnetic field measurements at a magnetic field sensor deployed on a drill string in a drilling wellbore while the electromagnet is switching. The magnetic field measurements may be sorted into at least first and second sets corresponding to the first and second states of the electromagnet. The first and second sets of magnetic field measurements are then processed to compute at least one of a distance and a direction from the drilling well to the target. The electromagnet may be automatically switched back and forth between the first and second states independently from the acquiring and sorting of the magnetic field measurements.

A method for magnetic ranging includes switching an electromagnet deployed in a target wellbore between at least first and second states and acquiring a plurality of magnetic field measurements at a magnetic field sensor deployed on a drill string in a drilling wellbore while the electromagnet is switching. The magnetic field measurements may be sorted into at least first and second sets corresponding to the first and second states of the electromagnet. The first and second sets of magnetic field measurements are then processed to compute at least one of a distance and a direction from the drilling well to the target. The electromagnet may be automatically switched back and forth between the first and second states independently from the acquiring and sorting of the magnetic field measurements.

A tightening machine of the present invention includes: a mobile receiving portion 20 that receives a positioning signal (GNSS signal) from positioning means (GNSS satellite Sa); a geomagnetic sensor 30 that detects a direction of a socket portion 41 with the mobile receiving portion 20 as a starting point; and a control portion that receives the positioning signal received by the mobile receiving portion 20 and a positioning signal received by a fixed receiving portion 22 at a fixed position away from a torque wrench 110 serving as the tightening machine, corrects a three-dimensional position of the mobile receiving portion 20 based on the positioning signals, and calculates a three-dimensional socket position of the socket portion 41 of the torque wrench 110 serving as the tightening machine based on a result of the correction and the direction of the socket portion 41 detected by the geomagnetic sensor 30.