4results about How to "Protection is in progress" patented technology

This invention provides an extreme energy-saving range control method and system for new energy vehicles, comprising: acquiring vehicle operating status information and adaptively activating an energy-saving range mode based on the operating status information; dividing the vehicle's battery rated capacity into a normal driving stage range and an emergency driving stage range according to a ratio based on the activation result, and adaptively adjusting the vehicle's power output and accessory energy consumption based on the vehicle's real-time battery level in the normal driving stage range; adjusting the vehicle's standard operating procedures when the vehicle's battery level enters the emergency driving stage range, and prohibiting the vehicle from driving when the battery level reaches 0. This method effectively extends the vehicle's driving range, avoids battery over-discharge, and better meets user needs and vehicle protection requirements.

This utility model belongs to the field of train inspection technology and discloses a buffer fixture placed on the track, including a fixed base and a buffer component. The fixed base is provided with a clamping component one and a clamping component two, at least one of which is movable relative to the other, so that the clamping component one and the clamping component two clamp the track or release the track. The buffer component is connected to the fixed base through an elastic member. The elastic member includes a reset member and a guide rod, with the reset member sleeved on the outside of the guide rod. In the fixed base and the buffer component, the guide rod is fixedly connected to one of them and slidably connected to the other. This utility model can absorb greater impact loads through two-stage buffering, thereby better meeting the buffering requirements of the inspection robot. This utility model also discloses an inspection system with the above-mentioned buffer fixture.

The invention discloses a flexible direct-current transmission line protection method and system based on modulus high-frequency components. The method comprises the following steps: acquiring a fault characteristic frequency range in a transmission line area in advance by using a full-element analysis method; thirdly, collecting positive voltage and negative voltage of a multi-terminal flexible direct current power transmission line protection installation position at multiple different moments, and realizing protection starting detection by using positive and negative break variables; the positive electrode grounding fault, the negative electrode grounding fault and the bipolar fault are detected by using the accumulated zero-mode voltage; and finally, according to a fault line mode voltage characteristic frequency range in a preset area and a multi-dimensional variational mode decomposition algorithm, carrying out time-frequency characteristic component extraction on the line mode voltage of the line, and constructing an adaptive peak voltage quantitative index to realize quantitative detection on the fault area of the power transmission line. According to the invention, a full-element analysis method, a multi-dimensional variational mode decomposition algorithm and a self-adaptive voltage peak value are utilized, so that the single-ended protection method can tolerate 1500 ohm transition resistance, and the sensitivity of the protection method is effectively improved.

The application discloses a tetraphenyl ethylene derivative, a preparation method and application as a perfluorooctyl sulfonate fluorescent probe, and the tetraphenyl ethylene derivative is characterized by a formula II. The tetraphenyl ethylene derivative has obvious aggregation-induced emission effect, excellent luminescence performance, and can realize 'on' detection of perfluorooctane sulfonate. The preparation method of the perfluorooctane sulfonate fluorescent probe of the tetraphenyl ethylene derivative is simple, the reaction condition is mild, is conducive to environmental protection, and meets the characteristics of green chemistry. The prepared tetraphenyl ethylene derivative fluorescent probe has excellent chemical stability, high sensitivity and good anti-interference ability, can realize rapid and efficient detection of perfluorooctyl sulfonate, and is expected to realize industrialization and on-site application.