38results about How to "Reduce energy value" patented technology

Narrow-band interference in spread spectrum systems is eliminated by performing a frequency spectrum transform on N sampling points of the data to obtain N points of data; after M transforms, getting an energy accumulation of individual data to obtain N energy values; removing partial excessive large values from the N energy values, averaging the rest, then calculating the threshold value for interference determination based on the average value; identifying all points that have energy values exceeding the threshold value, and performing interference suppression for the data of corresponding points after frequency spectrum transform and finally outputting the data after frequency spectrum inverse transform.

A method of removing a signal from among received signals, the method including: filtering the received signals; detecting a time band of the filtered received signals where an energy value of the filtered received signals exceeds a reference energy value; and applying a gain value to one or more received signals, from among the received signals, in the detected time band.

The invention relates to a terminal protecting shell, a touch identification method and a touch identification device. The terminal protecting shell comprises an ultrasonic signal sheltering plate and an ultrasonic echo signal through hole, wherein the ultrasonic signal sheltering plate is arranged above the position, corresponding to the surface position of transmitting an ultrasonic signal by the terminal, of a terminal protecting shell; the first end of the ultrasonic echo signal through hole is arranged at the position, corresponding to a microphone perforation in the surface of the terminal, of the terminal protecting shell; the second end of the ultrasonic echo signal through hole is arranged at the position, corresponding to the preset position on the front side of the terminal, of the terminal protecting shell; the ultrasonic signal sheltering plate resists the ultrasonic signal transmitted by the terminal from being transmitted to the preset direction; and the ultrasonic echo signal of the ultrasonic signal is guided into the microphone of the terminal through the ultrasonic echo signal through hole of the terminal protecting shell. According to the technical scheme of the invention, the directivity of the ultrasonic signal transmitted by the terminal and the directivity of the ultrasonic echo signal received by the terminal are enhanced.

The invention discloses a method for improving the pre-welding quality of the negative electrode tabs of high-power lithium-ion batteries, which comprises the following steps: arranging a number of negative electrode copper tabs so that one end of the negative electrode copper tabs is on the same plane, and using an ultrasonic welding machine One pre-welding, let it stand, and then carry out the second pre-welding. The method proposed by the present invention to improve the pre-welding quality of the negative electrode tab of the high-power lithium-ion battery, through the way of secondary welding, reduces the energy value and welding pressure required during welding, reduces the generation of metal shavings, and improves the welding firmness , improve the power performance of the battery, reduce the short-circuit rate of the battery cell in the production process, provide technical support for the power consistency improvement and process improvement of the high-power lithium-ion battery, increase the cost of the battery pass-through rate, and reduce the production cost of the enterprise.

The invention belongs to the technical field of air conditioning, and in particular relates to a control method of an air conditioning unit and the air conditioning unit. The invention aims to solve the problem that during the operation of the air conditioner unit, when the load of the indoor unit fluctuates suddenly, the "surge" phenomenon occurs when the compressor cannot be loaded or unloaded in time, which affects the stability of the compressor operation and even causes the compressor bearing to fail. For this purpose, the present invention judges the actual suction pressure value of the compressor, the actual discharge pressure value of the compressor and the actual bearing offset, and then based on the judgment result, the air compressor installed between the suction end and the discharge end of the compressor The load balancing valve between them is selectively controlled while cooperating with the compressor energy regulation. In this way, according to the load change of the indoor unit, the method is used to adjust the load balancing valve and the energy adjustment of the compressor to adaptively adjust the operating state of the compressor, so as to avoid the "surge" phenomenon of the compressor and affect the compressor's operation. Stability has even caused problems with compressor bearing failure.

This invention discloses a structure of a super-wide band pulse waveform signal and receive method, which sets up a pulse first, then compresses said pulse for times then carries out translation on time finally to weigh the original waveform and compressed waveform to make up of a new combined waveform to transmit data in terms of the present super wide band wireless communication way, besides, various modulations and multiple address ways are added.