Disclosed are a linkage device, a transceiver module and a plane stress field measuring device and method capable of achieving synchronous adjustment of distance and angle, and relates to the field of ultrasonic non-destructive testing. The existing technical means for measuring plane stress in the field of ultrasonic testing has the shortcomings that the same testing is only applicable for single materials and the deflection angles of transmitting and receiving transducers are inconsistent. In the application, the linkage device designed by comprising a distance adjusting screw, an angle adjusting screw, a left connecting rod, a right connecting rod, a shaft column and a column lock is adopted, and based on the linkage device, the transceiver module designed by comprising a receiving end wedge, a receiving probe, a transmitting end wedge and a transmitting probe is additionally arranged; based on the transceiver module, the measuring device designed by comprising a pulse transmitting device, an amplifying device and a data acquisition device is additionally arranged, and the stress measuring method applicable for the stress measuring device is provided; and the distance and deflection angle between the receiving probe and the transmitting probe of the detection are adjusted according to a tested part. The application applies to stress measurement in the manufacturing process of mechanical components.

A distance sensor is used for automatically determining the size of a wheel on a mobile machine. The distance sensor is mounted to detect distance information relating to a distance between the sensor and an outer circumferential surface of the wheel. The distance information is received by a controller configured to determine the radius of the wheel based at least in part on the distance information. The controller may compare the measured radius with data for a range of standard wheel sizes and determine which standard wheel size is fitted. The measured wheel radius and/or the determined standard wheel size can used as an input for a control system on the machine which requires wheel size data, such as an axle height adjustment system.

A distance sensor is used for automatically detecting whether an outer wheel of a dual-wheel axle is present. The distance sensor is mounted to detect a distance between the sensor and an outer wheel of a dual-wheel axle. A controller compares the distance information with an expected range of distances if the outer wheel is present and determines that the wheel is not present if the measured distance falls outside the expected range. The methods and systems are particularly suitable for mobile machines, such as a combine harvester, having a rollover risk reduction system and/or a stability control system reliant on accurate width data for the machine, and which can be configured to apply different limits for maximum steering angle and/or maximum speed depending on whether the outer wheel is found to be present.

A distance sensor is used for automatically detecting whether an outer wheel of a dual-wheel axle is present. The distance sensor is mounted to detect a distance between the sensor and an outer wheel of a dual-wheel axle. A controller compares the distance information with an expected range of distances if the outer wheel is present and determines that the wheel is not present if the measured distance falls outside the expected range. The methods and systems are particularly suitable for mobile machines, such as a combine harvester, having a rollover risk reduction system and/or a stability control system reliant on accurate width data for the machine, and which can be configured to apply different limits for maximum steering angle and/or maximum speed depending on whether the outer wheel is found to be present.

A vehicle theft-prevention apparatus can include at least one computing device couple to a plurality of sensors and a wireless transceiver. The plurality of sensors can be configured to sense measurements proximate to a vehicle. The at least one computing device can be configured to read a plurality of first measurements of a first sensor of the plurality of sensors. Based on the plurality of first measurements from the first sensor, the at least one computing device can determine that a key fob moved outside of a range of the first sensor. In response to the key fob moving outside of the range of the first sensor, the at least one computing device can transition to an armed state. The at least one computing device can read a plurality of second measurements from a subset of the plurality of sensors. Based on the plurality of second measurements, the at least one computing device can determine that a person has entered the vehicle.

A sensing system contains a vibration device attached to a stem of an agricultural crop for applying vibration to the agricultural crop, at least one sensor attached to the stem of the agricultural crop for sensing vibration of the agricultural crop caused by the vibration applied to the agricultural product from the vibration device to transmit vibration information relate to the vibration of the agricultural crop and a computing device for identifying one local maximum value among a plurality of local maximum values in a frequency spectrum obtained from the vibration information received from the at least one sensor as a resonance frequency of the vibration of the agricultural crop to determine a growth degree of a fruit of the agricultural crop based on the identified resonance frequency.

A sensing system contains a vibration device attached to a stem of an agricultural crop for applying vibration to the agricultural crop, at least one sensor attached to the stem of the agricultural crop for sensing vibration of the agricultural crop caused by the vibration applied to the agricultural product from the vibration device to transmit vibration information relate to the vibration of the agricultural crop and a computing device for identifying one local maximum value among a plurality of local maximum values in a frequency spectrum obtained from the vibration information received from the at least one sensor as a resonance frequency of the vibration of the agricultural crop to determine a growth degree of a fruit of the agricultural crop based on the identified resonance frequency.

An adjustment tool for adjusting a maneuvering mechanism of a main landing gear of an aircraft, the landing gear having a plurality of wheels. The tool includes a telemeter, a locking system for locking the telemeter on the external face of a wheel, a wireless communication unit that is connected to the telemeter and makes it possible, when the tool is being used, to connect the telemeter with a control device provided with a display screen.

A method of and system for visualizing a sound source is disclosed. The method may include analyzing an audio signal received by a sound transducer to determine a positional direction of the sound source, determining whether the positional direction of the sound source falls outside a field of view of a user, and in response to determining that the positional direction of the sound source falls outside the field of view of the user, rendering on a display unit a visual representation of the sound source. The visual representation of the source is rendered on a virtual surface at a location within the field of view of the user, the location corresponding to at least one of a distance of the source from the user and a positional direction of the source with respect to the user.

A method of and system for visualizing a sound source is disclosed. The method may include analyzing an audio signal received by a sound transducer to determine a positional direction of the sound source, determining whether the positional direction of the sound source falls outside a field of view of a user, and in response to determining that the positional direction of the sound source falls outside the field of view of the user, rendering on a display unit a visual representation of the sound source. The visual representation of the source is rendered on a virtual surface at a location within the field of view of the user, the location corresponding to at least one of a distance of the source from the user and a positional direction of the source with respect to the user.