Abstract: Disclosed is a series capacitor buck converter with a precharge circuit. The converter includes a switch device unit, a series capacitor, an output inductor, a switch control unit, and a capacitor precharge circuit, etc. The switch control unit is configured to control the switch on and off of a switch unit in the power conversion unit to achieve power conversion; the capacitor precharge circuit includes a capacitor voltage detection circuit configured to detect a voltage at both ends of the series capacitor, and a capacitor charge circuit configured to precharge the series capacitor through a charge switch device in a pulse width modulation control mode, and the current limiting resistor is connected in series with the charge switch device to suppress a transient large current when the charge switch device is switched on.

Abstract: A LIDAR ranging method and a detection system. The detection system includes: a drive signal generating unit configured to generate a driving signal and act on a laser source through a laser modulation driving circuit, wherein the laser source receives the driving signal to emit a pulsed laser sequence; an array-type returned light receiving module configured to receive the returned light signal reflected by a detected object in the field of view and generate a returned signal; and a processing module configured to generate a modulation signal according to the driving signal generated by the driving signal generator, obtain a distance-related signal based on the modulation signal according to a preset rule, and outputs the distance information of the detected object according to the distance-related signal.

Abstract: Disclosed is a method of manufacturing a multilayer piezoelectric element including internal electrodes, including providing a piezoelectric sheet including ceramic, forming internal electrodes on the piezoelectric sheet to create a piezoelectric sheet with internal electrodes formed thereon, stacking a plurality of piezoelectric sheets with internal electrodes formed thereon to create a piezoelectric stack, sintering the piezoelectric stack to create a sintered piezoelectric stack, and heat-treating the sintered piezoelectric stack in a reducing atmosphere, in which the internal electrodes are formed in an area ratio of 90% or more relative to the area of the piezoelectric sheet, thereby facilitating reduction of the internal electrodes even by reduction heat treatment at a relatively low temperature.

Abstract: There is provided a communication chip package integrating an antenna and a heat dissipation ground. In the integrated package according to an embodiment, a heat dissipation ground is coupled to a high frequency communication chip package, an antenna patch is directly disposed on an upper portion of a mold of a ceramic material, changes are made to the structure of the ceramic mold to minimize a wire bonding length to a communication chip, a capacitive power feeding method is applied through a sidewall of the ceramic mold, and heat is discharged through a lower portion of the package and also through a PCB or an additional heat dissipation structure of a lower portion of the PCB. Accordingly, an insertion loss may be minimized and an effect of heat dissipation may be maximized.

Abstract: A focusing device includes a substrate and a plurality of scatterers provided at both sides of the substrate. The scatterers on the both sides of the focusing device may correct geometric aberration, and thus, a field of view (FOV) of the focusing device may be widened.

Abstract: An electronic cigarette includes an atomizer, a power supply device detachably connected to the atomizer, and a sensor; the atomizer is provided with a first induction air passage and a first communication hole communicating with the first induction air passage; the power supply device is provided with a second induction air passage and a second communication hole communicating with the second induction air passage; the quantity of either the first communication hole or the second communication hole is set to be at least one, and the quantity of the other one is set to be at least two. When the atomizer is connected at different angles with respect to the power supply device, at least one of the first communication holes is in communication with at least one of the second communication holes, such that the first induction air passage is in communication with the second induction air passage.

Abstract: A cartridge includes a liquid storage chamber and an atomizing device. The atomizing device includes an atomizing base and a liquid absorbing member installed in the atomizing base. The atomizing base is provided with an atomizing chamber therein. The atomizing base is made of an elastic material. The atomizing base is provided with a through hole. The liquid absorbing member extends through the through hole, and the inner wall of the through hole closely abuts against the outer wall of the liquid absorbing member to isolate the liquid storage chamber from the atomizing chamber. No gap causing e-liquid leakage is present between the liquid absorbing member and the through hole, thereby effectively preventing e-liquid leakage, achieving good isolation between e-liquid and vapor, and simplifying the assembly process. An electronic cigarette having the cartridge is also provided.

Abstract: The present application relates to a power supply station and a charging and discharging method thereof, and relates to the technical field of energy sources. The power supply station includes a base assembly to be placed on a plane, and configured to mount an end cap assembly and a connecting assembly; a connecting assembly disposed on the base assembly, configured to insert a lithium battery pack therein and electrically connect the lithium battery pack, and configured to distribute energy from the lithium battery pack; the lithium battery pack, slidably connected to the connecting assembly, and configured to provide electrical energy; the end cap assembly, disposed on the base assembly, and configured to fix the connecting assembly; a locking assembly, disposed on the connecting assembly, and configured to lock the lithium battery pack; and an illumination assembly disposed on the end cap assembly and configured for illumination.

Abstract: An atomizer and an aerosol generating device are provided. The atomizer includes a liquid storage member with a liquid storage cavity formed therein for storing an aerosol-forming substrate; and an atomizing housing at least partially received in the liquid storage cavity. A liquid storage space is formed inside the atomizing housing. The atomizing housing is provided with an air guiding hole configured for communicating an upper portion of the liquid storage space with an outside atmosphere. The atomizing housing is further provided with a pressure relief hole communicating the liquid storage space with the liquid storage cavity. When an air pressure in the liquid storage cavity is greater than an external air pressure and a positive pressure difference is formed, the aerosol-forming substrate in the liquid storage cavity is squeezed by the positive pressure difference into the liquid storage space through the pressure relief hole.

Abstract: The application discloses a bone conduction acoustic device and a wearable device, wherein the bone conduction acoustic device comprises an external packaging structure, a hollow cavity is arranged in the external packaging structure, and in the hollow cavity, the following components are arranged: a hollow flexure spring; an actuator, which includes an upper magnetic part and a lower magnetic part, wherein the upper magnetic part and the lower magnetic part are arranged opposite to each other in parallel in the Z-axis direction, and there is a gap to form an isolation area; a spatial low-frequency adjustment plate, which is arranged between the hollow flexure spring and the actuator, wherein the spatial low-frequency adjustment plate adjusts the stackup of the hollow flexure spring and the actuator in the Z-axis direction, and adjusts the gap in the isolation area.

Abstract: A miniature smart lock comprises a lock shell, and a magnetic rod, a push head, a bolt, a V-shaped push rod, an anti-prising guide slot, and a positioning guide pin, which are mounted in the lock shell, wherein a magnetic coil is mounted surrounding an outer portion of the magnetic rod; a magnetic rod spring is mounted on the magnetic rod on the left side of the magnetic coil; the push head is mounted at the right end of the magnetic rod; the V-shaped push rod is connected to the right end of the push head via a V-shaped push rod connection pin; and the V-shaped push rod is movably connected to the bolt via an anti-prising pin.