A dispenser and methods for dispensing a material into a receptacle comprises a dispenser outlet for dispensing material into the receptacle; a support for receiving a receptacle; at least one lateral sensor positioned to laterally sense a receptacle received on the support; an upper sensor positioned to sense a receptacle received on the support from above; and a controller operatively connected to the lateral and upper sensors. The controller is configured to sense the presence of a receptacle received on the support, calculate the volume of the receptacle and/or the volume of material within the receptacle from data received from the lateral and upper sensors, and control the volume of material dispensed from the dispenser outlet into the receptacle based upon the calculated volume of the receptacle and/or the volume of material within the receptacle.

The present invention provides a system and method for real-time monitoring of an above-ground height of a boom based on multi-source information fusion. The system includes a boom, an information acquisition unit, and a control unit. The method includes: step 1: establishing a relationship between an above-ground height s of the boom and an output current y of a pull-wire cylinder displacement sensor; step 2: calibrating ultrasonic ranging sensors; step 3: acquiring above-ground heights of the boom; step 4: performing anti-interference processing on the acquired height data; step 5: calculating an above-ground height H.sub.0 of the boom by multi-source data fusion; step 6: calculating a distance H.sub.canno between the boom and a crop canopy; step 7: acquiring an inclination angle θ.sub.b of the boom; and step 8: calculating heights H.sub.end of two ends of the boom relative to ground.

The present invention provides a system and method for real-time monitoring of an above-ground height of a boom based on multi-source information fusion. The system includes a boom, an information acquisition unit, and a control unit. The method includes: step 1: establishing a relationship between an above-ground height s of the boom and an output current y of a pull-wire cylinder displacement sensor; step 2: calibrating ultrasonic ranging sensors; step 3: acquiring above-ground heights of the boom; step 4: performing anti-interference processing on the acquired height data; step 5: calculating an above-ground height H.sub.0 of the boom by multi-source data fusion; step 6: calculating a distance H.sub.canno between the boom and a crop canopy; step 7: acquiring an inclination angle θ.sub.b of the boom; and step 8: calculating heights H.sub.end of two ends of the boom relative to ground.

The present disclosure describes systems and methods for automated determination of certain physical characteristics of a trailer in a tractor-trailer truck and positional arrangement between the trailer and tractor of the truck. The technology may include a camera mounted on the tractor to acquire an image of at least a rear portion of the trailer; a sensor configured to acquire information relating to the trailer angle; a processor configured to determine a position of the rear portion of the trailer in the image, and determine the length of the trailer based at least in part on the determined position of the rear portion of the trailer in the image and the information relating to the trailer angle.

The present disclosure describes systems and methods for automated determination of certain physical characteristics of a trailer in a tractor-trailer truck and positional arrangement between the trailer and tractor of the truck. The technology may include a camera mounted on the tractor to acquire an image of at least a rear portion of the trailer; a sensor configured to acquire information relating to the trailer angle; a processor configured to determine a position of the rear portion of the trailer in the image, and determine the length of the trailer based at least in part on the determined position of the rear portion of the trailer in the image and the information relating to the trailer angle.

An ultrasonic sensor includes a case, a piezoelectric element, and two weight portions. The case includes a circumferential wall portion extending in an axial direction. The two weight portions are provided on the circumferential wall portion outside the case so as not to overlap each other as seen in the axial direction. When a bottom portion of the ultrasonic sensor bends toward one side in the axial direction during vibration at a frequency of a first vibration mode, the two weight portions incline toward the other side in the axial direction. When the bottom portion bends toward one side in the axial direction during vibration at a frequency of a second vibration mode, the two weight portions incline toward one side in the axial direction.

An ultrasonic sensor includes a case, a piezoelectric element, and two weight portions. The case includes a circumferential wall portion extending in an axial direction. The two weight portions are provided on the circumferential wall portion outside the case so as not to overlap each other as seen in the axial direction. When a bottom portion of the ultrasonic sensor bends toward one side in the axial direction during vibration at a frequency of a first vibration mode, the two weight portions incline toward the other side in the axial direction. When the bottom portion bends toward one side in the axial direction during vibration at a frequency of a second vibration mode, the two weight portions incline toward one side in the axial direction.

A LiDAR sensor (41) is configured to sense information of an outside of a vehicle. An ultrasonic sensor (42) is configured to sense information of the outside of the vehicle in a different manner from the LiDAR sensor (41). A first bracket (43) supports the LiDAR sensor (41) and the ultrasonic sensor (42). A first sensor actuator (44) is configured to adjust a sensing reference position of the LiDAR sensor (41) relative to the first bracket (43). A second sensor actuator (45) is configured to adjust a sensing reference position of the ultrasonic sensor (42) relative to first bracket (43). A first bracket actuator (46) is configured to adjust at least one of a position and a posture of the first bracket (43) relative to the vehicle.

A phased array antenna system comprising a plurality of isotropic radiating elements and/or omnidirectional receiving elements addressing close in fields and a plurality of non-isotropic radiating elements and/or non-omnidirectional receiving elements addressing remote fields with the combined elements used to extend the maximum range of the antenna system without increasing the number of element nor the output power of the antenna. The non-isotropic radiating elements and/or the non-omnidirectional receiving elements can be formed by adding focusing structures such as lenses or reflective structures in the radiating path of isotropic radiating elements and/or omnidirectional receiving elements. Antennas with combined isotropic radiating and non-isotropic radiating elements can be utilized for electromagnetic phased array radar, communication and imaging systems and for acoustic phased array sonar or ultrasound systems.

Disclosed herein is an ultrasonic sensor control device that controls an ultrasonic sensor device configured to transmit and receive ultrasonic waves. The ultrasonic sensor control device includes a transmission control section configured to control transmission of a transmission ultrasonic wave at a first frequency through the ultrasonic sensor device, a reception section configured to receive a reception ultrasonic wave through the ultrasonic sensor device, and a device control section configured to control the ultrasonic sensor device to set given frequencies as a transmission frequency of the transmission ultrasonic wave and a reception frequency of the reception ultrasonic wave. The device control section changes the reception frequency in such a manner that the reception frequency is a frequency different from the first frequency during a first period including at least a transmission period during which the transmission ultrasonic wave is transmitted.