35results about How to "Avoid distance restrictions" patented technology

The invention discloses a method for realizing a GNSS network comprehensive positioning service system, and belongs to the field of the construction of positioning service systems. In the method, at least three reference stations are arranged in a work zone according to network differential positioning technology, the reference stations and a relay server build a dedicated data transmission network VPN in a telecommunication public network to complete data transmission, and both the two subsystems for real-time positioning service and off line data service of a service center acquire data sources from the relay server and then provide corresponding services for real-time mobile station users and off line users respectively. The method of the invention improves the conventional many-to-onedata transfer mode, changes a file-based data storage system mode, guarantees the data communication among the reference station, mobile stations and system service center through a NTRIP protocol and realizes system standardization.

The invention provides a steam-gas displacement and gravity oil drain composite exploiting method. According to the method, at least one horizontal well or a row of vertical wells close to the top of an oil pool are adopted as injection well sets, horizontal wells with the number same as that of wells in the injection well sets or with one more well are close to the bottom of the oil pool and are used as extraction well sets, the injection well sets and the extraction well sets are arranged in parallel in a non-direct-facing mode, and lower extraction wells are located in the middle portions of two upper injection wells. Steam huff and puff or steam and gas composite huff and puff are carried out on the injection wells and the extraction wells at the same time or in sequence, heat communication is built between the injection wells and the extraction wells to low the formation pressure, then high-temperature steam and non-condensation gas are injected into the injection wells at the same time or in an alternating mode, the injected steam seeps in the oil pool and heats the oil pool, the steam is condensed into hot water at the same time, and the gas expands a heating cavity, lowers heat loss and increases the pressure of the oil pool, so that crude oil flows to the extraction wells and is extracted under the composite effect of pressure displacement and gravity oil drain.

The invention discloses an optimal solar panel mounting angle measuring system which comprises a single chip microcomputer, a control circuit module, an omnibearing rotating cradle head, a solar panel, a Bluetooth wireless sending module, a computer and maximum average power algorithm software. The solar panel is mounted on the omnibearing rotating cradle head. The measuring system is characterized in that the single chip microcomputer controls the omnibearing rotating cradle head to rotate and output power collection of the solar panel through a control circuit, rotation of the cradle head is controlled by adopting a mode combining horizontal rotating with vertical rotating, collected data are sent to the computer through the Bluetooth wireless sending module, and the computer performs data processing and analyzing through the maximum average power software which is designed to acquire an optimal mounting azimuth angle and an optimal mounting inclination angle. The two optimal angles including the azimuth angle and the inclination angle in mounting of the solar panel are directly acquired by adopting a method of field measuring, acquired results are more accurate, and the optimal solar panel mounting angle measuring system is of great value to photovoltaic arrays and meteorological studying.

The embodiment of the invention discloses a quadrotor unmanned aerial vehicle communication method and system based on Bluetooth and Wi-Fi, and relates to the field of unmanned aerial vehicle communication. The two data transmission measures of Bluetooth and Wi-Fi are used for forming an effective redundancy structure used for realizing the wireless communication between an Android ground station and an unmanned aerial vehicle; a remote control instruction of the Android ground station can be parallelly and fast received; the reliability and the real-time performance of the wireless communication between the Android ground station and a ground test and control terminal can be improved in an instruction code repeating and multi-time and two-path parallel sending mode; the communication distance is expanded in a wireless communication mode; the problem of communication distance limitation is avoided.

The present invention provides a multi-source battery pack charging and discharging method, device, electronic equipment, and storage medium. The multi-source battery pack charging and discharging method includes: receiving fault information and remaining power of multiple battery packs through multiple battery controllers; Determine non-faulty battery packs according to the fault information of multiple battery packs; determine one or more quasi-power supply battery packs whose remaining power is greater than or equal to a predetermined power threshold according to the determined remaining power of the non-failure battery packs; determine from one or more quasi-power supply battery packs Determine the power supply battery pack in the power supply battery pack; use the output signal of the battery controller connected to the communication connection of the power supply battery pack as an input signal to the functional module, and use the output signal of the functional module as the power supply battery pack The input signal of the communication link to the battery controller. The method and device provided by the invention realize charging and discharging of multi-source battery packs.