摘要:
A piezoelectric resonator includes a resonator substrate having a resonating body with a thickness that is associated with a resonant frequency, a conductor disposed on the resonating body and having a body electrode, a base having a groove aligned with the body electrode and defined by a groove-defining wall, a base electrode disposed on the groove-defining wall and cooperating with the body electrode and the base to form a capacitor load, and a cap disposed on the resonator substrate in a manner that the resonator substrate is sandwiched between the cap and the base.
摘要:
A method of navigating an autonomous mobile device to a base station is provided. In the method, when a detector detects a navigating signal sent out by the base station, the mobile device rotates in a first direction until the detector fails to detect the navigating signal, and a first time point is set at this time. Then, the mobile device rotates in a second direction opposite to the first direction until the detector fails to detect the navigating signal, and a second time point is set at this time. Afterward, the mobile device rotates in the first direction by a time computed based on the first and second time points to make the detector face the base station, and then, moves toward a direction pointed by the detector.
摘要:
A rollator includes a support frame assembly, a seat having first and second positioning notches, and a backrest unit including a backrest frame having two opposite ends pivoted to the support frame assembly, and a positioning frame having two opposite ends pivoted to the backrest frame. The positioning frame is engageable with a selected one of the first and second positioning notches. The backrest frame cooperates with the seat unit to define a seating space that faces rearward when the positioning frame is engaged with the first positioning notch, and cooperates with the seat unit to define a seating space that faces forward when the positioning frame is engaged with the second positioning notch.
摘要:
An illuminating electronic gift or souvenir device a case in the shape of a small telescope, binocular or monocular and an internal electronic circuit including a type of integrated circuit and luminescent elements such as LEDs or similar lights which cause, upon actuating a switch on the outside, multiple and diverse lighting effects that lead to a visual effect that simulates a starry sky or galaxies in motion, inspiring the imagination of the user of the device. The circuit can be programmed to present lighting effects in its interior that are static or changing.
摘要:
The system and method to advance human performance in sighting, tracking, recognizing, and reacting to (collectively “engaging”) moving and stationary objects, for example, advancing skill in engaging targets with a firearm. System components include software and hardware that provide target and non-target image stimuli that can be manually or automatically generated as stationary or moving stimuli in a blank or a rendered scene environment. The methods including increase stimuli movement speeds and/or reducing the interval between or the time for which stimuli are displayed until the trainee fails to properly engage the stimuli, then reduce the movement speeds and/or increase the interval time to levels at which the trainee properly engages the stimuli. By repeating training methods with increasing speed, the trainee will be conditioned to achieve proper stimuli engagement with increasingly elevated speed and accuracy.
摘要:
Levitation devices are disclosed for use with beds. In one embodiment, the levitation device is configured to facilitate rotation of a mattress with respect to a box spring. In another embodiment, the levitation device is configured to facilitate making a bed which allows sheets and blankets to be tucked between the mattress and the box spring without the need to lift the mattress. In a third embodiment, the levitation device functions as a hybrid device and can be used for making a bed or rotating a mattress.
摘要:
A system (1) for handling containers (7) having electronic product ID tags (15), the system comprises a storage cabinet (5) with lockable compartments (51) for storing tool kits (53) for handling the containers; each tool kit has an electronic ID tag associated with a predetermined compartment (51) in the storage cabinet and with a predetermined product ID tag of a container; access to each compartment is allowed or blocked by a respective electronically controlled lock; an electronic control unit (21); an electronic ID reader device (25) in communication with the electronic control unit, operable to read electronic ID tags of the components of the system and communicate same to the electronic control unit; the electronic control unit is operable to actuate the electronic lock of a predetermined compartment in the storage cabinet to allow access to said compartment upon matching the electronic product ID tag of a container with the associated electronic ID tag of the tool kit stored in the predetermined compartment, whilst keeping the remaining compartments locked.
摘要:
Electrical power conversion systems and methods suited for driving electric motors, and related systems such as propulsion systems, and vehicles employing same, are disclosed herein. In an example embodiment, the electrical power conversion system includes a plurality of series coupled inverters, each including respective first and second DC input terminals and also including respective AC output ports by which the inverters can respectively be coupled at least indirectly to motor winding sets. Additionally, the system includes a controller coupled to the inverters and configured to generate control signals that are respectively provided to the inverters. The control signals tend to cause respective AC output powers output from the respective AC output ports to be equal or substantially equal in a manner that tends to result in respective DC link voltage portions applied between the respective DC input terminals of the respective inverters being or becoming equal or substantially equal.