3results about How to "Effective volume control" patented technology

The utility model discloses an axial flow heat radiation servo motor, comprising a casing provided with a cover, the cover is provided with a plurality of air holes, and the casing is rotatably connected with a rotating shaft; the stator assembly is in a circular ring shape and is connected into the machine shell. The rotor assembly is connected to the rotating shaft, the stator assembly surrounds the rotor assembly, and an annular air gap is formed between the rotor assembly and the stator assembly; and the cooling fan comprises an end seat and a plurality of fan blades, the end seat is in a circular ring shape, the end seat is connected to the end part of the rotor assembly, all the fan blades are distributed along the circumferential surface of the end seat, the fan blades are overlapped with the air gaps, the fan blades are overlapped with the air holes, the fan blades are bent towards the extension direction of the rotating shaft, and the fan blades are in central symmetry about the rotating surface of the end seat. The heat dissipation device is compact and reliable in structure, heat dissipation cost can be effectively saved, pertinence of fan blade operation heat dissipation is high, the energy utilization rate is high, heat dissipation efficiency is high, operation stability is high, and stable heat dissipation under the bi-directional rotation working condition can be guaranteed.

The utility model discloses an internal resistance measuring circuit for a backup power supply of a distribution automation terminal. The internal resistance measuring circuit comprises an MCU, a V / I conversion circuit and an amplification sampling part. The output port of the DAC module of the MCU is connected with the input end of the V / I conversion circuit; the positive and negative electrodes of the output end of the V / I conversion circuit are correspondingly connected with the positive and negative electrodes of the backup power supply. The positive and negative electrodes of the input end of the amplification sampling part are correspondingly connected with the positive and negative electrodes of the backup power supply, and the output end is connected with the input end of the ADC module of the MCU. The internal resistance of the battery is estimated by measuring the impedance characteristic of the battery under an alternating current signal, a high-power resistor is not needed, the size can be effectively controlled, a back-up power supply cannot be damaged by a small current signal, and a measurement result with higher precision can be conveniently obtained after signal amplification.

The utility model discloses a touch formula gear adjustment control's beauty instrument, include: main part structure and cover, the upper surface of cover is provided with base layer, electrode layer and insulating layer from below to above, and the inside of main part structure is provided with control circuit, and control circuit electric connection has electric capacity touch singlechip, and electrode layer forms gear adjustment interval on the cover. The utility model adopts the mode of electric capacity touch screen, and the electrode layer is provided with protection by base layer and insulating layer, to form electric capacity touch screen. When the finger contacts the insulating layer, the capacitance value at the contact point will change, and the electric capacity touch singlechip obtains the position, intensity and other information of the touch point, and converts into operation instruction, and the control circuit carries out the quick adjustment of the size of the spray amount, the length of the spray time. Compared with the mode of adjusting by the key, the utility model can improve the overall appearance and coordination, and can improve the convenience of adjustment control, and effectively control the structure and volume of the whole.