32results about How to "Implement mode switching" patented technology

The invention discloses a hammer drill, which comprises a shell body, a motor arranged inside the shell body to generate rotating force, an operating tool, an impact force transfer mechanism and a switching mechanism. The impact force transfer mechanism comprises a gas cylinder, a piston, a motion conversion mechanism and a mobile element, wherein the gas cylinder can be rotationally supported inside the shell body and is provided with a first end and a second end; the first end and the second end can be axially extended; the operating tool is connected with the first end through a collet; the piston is arranged near the second end inside the gas cylinder and can move axially; the motion conversion mechanism can convert the rotating force of the motor into the reciprocation of the piston;the mobile element is arranged inside the gas cylinder and between the operating tool and the piston and can move axially; an air room is formed in the gas cylinder between the piston and the mobile element; and the gas cylinder is provided with at least a through hole for communicating the air room with the fluid outside the gas cylinder. The switching mechanism switches the operating mode between a first operating mode and a second operating mode; and the switching mechanism comprises a spacing mechanism which can restrict the displacement of the mobile element. The entire tool is compact in structure and low in manufacturing and assembly costs.

The invention relates to the technical field of display, and discloses a display system and method. The system comprises at least one display unit, wherein each display unit comprises a first projector and a second projector which are provided with an interlocking mechanism respectively, as well as a crossing alignment which is used for connecting the two projectors; the crossing alignment is used for indicating the states of the projectors; and the projectors are used for jumping modes according to the states of the projector and the adjacent projector indicated by the crossing alignment. By utilizing the display system and method, the real-time performance and reliability of a system display image can be improved.

The invention relates to a latent series capacitor compensation device. The latent series capacitor compensation device comprises a capacitor bank, an overvoltage protection device, a damping device and a bypass circuit breaker. The capacitor bank and the damping device are serially connected and then parallelly connected with the voltage protection device and the bypass circuit breaker; the capacitor bank and the damping device are connected with a power transmission line through a mode switching device Q1 and a mode switching device Q2 respectively; the latent series capacitor compensation device can be independently used as a conventional series compensation device or a latent series compensation device in a power system, or two or more latent series capacitor compensation devices can be used cooperatively. The latent series capacitor compensation device integrates functions of conventional series compensation and latent series compensation and can be used no matter the line is in normal operation or in fault.

The present invention relates to a multi-mode hybrid mechanical arm based on a motion bifurcation mechanism, which includes an end effector, an arm, and a parallel base connected in sequence, wherein: the arm is an 8-rod single-ring motion bifurcation mechanism, including Two arm branch chains arranged symmetrically, the two ends of the two arm branch chains are respectively movably connected to form a single-loop closed chain structure, each of the arm branch chains includes four connecting rods that are sequentially movably connected; the parallel base is a two-rotation Freedom space parallel mechanism; the parallel base is equipped with a mode switching mechanism for realizing the series and parallel conversion of the two arm branch chains. Compared with the prior art, the invention has the advantages of high working efficiency, small structure size and high overall stability.

The invention discloses a closed-loop aircraft fuel tank airborne inerting system. The system comprises an oil tank, the gas outlet of the oil tank is connected with the inlet of a condenser through apipeline, and the gas outlet of the condenser is sequentially connected with a first flame arrester, a gas dryer, a first flow sensor, a gas compressor and the gas inlet of an electric pressure regulating valve through pipelines. The gas outlet of the electric pressure regulating valve is sequentially connected with a first heat exchanger, a first pressure sensor and a first temperature sensor through pipelines, and the other end of the first temperature sensor is connected with the inlet of a first electric stop valve and the inlet of a second electric stop valve. An outlet pipeline of the first electric stop valve is connected with the inlet of a conventional hollow fiber membrane separator, and an outlet pipeline of the second electric stop valve is connected with the inlet of an emergency hollow fiber membrane separator. According to the present invention, the compensation loss increase caused by the engine bleed air can be avoided, the system weight and size are small, the inerting requirements under different working conditions are met, mode switching is achieved, and the system work is more intelligent.

The invention relates to an ONU self-adaptive switching method of a PON network, comprising the steps of: obtaining the current PON mode of the ONU; configuring an error counter and initializing it to 0; detecting whether an optical fiber is inserted; if it is detected that the optical fiber is not inserted, resetting the error counter Set to 0; if it is detected that the optical fiber has been inserted, judge whether the current value of the error counter is greater than the predetermined value; if the current value of the error counter is greater than the predetermined value, then switch the PON mode and restart the device. The invention can automatically detect the network mode of the central office, and automatically switch the working mode of the ONU according to the network mode, so as to automatically adapt to the hardware requirements of the current network mode.

The invention relates to a voltage stabilization and power distribution control system for equipment of the whole of an autonomous car, wherein the input interface of a circuit control system is connected to a battery 1, and the battery 1 is connected to a generator of a power supply system; the output interface of the circuit control system is connected with an electric load of an original car through a fuse F1 in a series connection; the anode of a battery 2 is connected to the anode of an original power supply control circuit through a fuse F2 and a diode D1 in the series connection, and the cathode of the battery 2 is connected to the GND of the original power supply control circuit; the output interface of the battery 2 is connected to a voltage stabilization and power distribution control module for an unmanned system load; the voltage stabilization and power distribution control module for the unmanned system load processes a voltage stabilization for 24 V electricity input, and then respectively supplies the 24 V electricity to a 24 V voltage stabilization electric load, a 12 V voltage stabilization electric load and a voltage stabilization and power distribution module of a controller; and after being processed by the voltage stabilization and power distribution module of the controller, the 24 V electricity is output to a power distribution control module of a drive mechanism. The voltage stabilization and power distribution control system for the equipment of the whole of the autonomous car provides the power supply for the various equipment with which the autonomous car is equipped, and realizes the construction of a power supply system in the process of transforming a traditional car to the autonomous car.

The invention discloses a USB (universal serial bus) interface mode switching device and an intelligent terminal, and belongs to the field of the computer. The USB interface mode switching device is applied to the intelligent terminal. The intelligent terminal comprises a chip set, an external USB interface and an internal USB unit. The USB interface mode switching device comprises a switching circuit, a USB concentrator and a control module. The switching circuit comprises two input terminals and two output terminals, the two input terminals are respectively connected with two USB interfaces of the chip set, the two output terminals are respectively connected with the external USB interface and the USB concentrator, and the USB concentrator is connected with at least one internal USB unit. The control module is used for detecting fine-definition multimedia interface signals or intelligent terminal modes, and controls the switching circuit to connect the chip set with the external USB interface and the USB concentrator according to the detection result, or connects the external USB interface with the USB concentrator.

The invention discloses a variable structure combined LLC resonant converter. The converter includes a DC source, a square wave generator, a combined resonant circuit, a combined transformer, a combined rectifier filter circuit, and a load. The combined resonant circuit includes a first LLC resonant circuit and a second LLC resonant circuit; the combined transformer includes a first transformer and a second LLC resonant circuit. Two transformers; the DC source is connected with the square wave generator; the square wave generator is connected with the combined resonant circuit, the combined resonant circuit is connected with the primary side of the combined transformer, and the secondary side of the combined transformer is connected with the combined rectification and filtering circuit; the combined rectification and filtering circuit is connected with the combined rectification and filtering circuit connected to the load. The variable structure combined LLC resonant converter of the present invention can combine and convert four operating modes, which can broaden the gain range of the converter, and the mode transition can ensure stable output. The added rectifier does not increase the conduction loss, and the LLC resonance is retained. Advantages of converters.