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 a distance sensor assembly and a mobile communication device. The distance sensor assembly includes a light-transmitting element, a distance sensor and a light-shielding element. The distance sensor is arranged on one side of the light-transmitting element and is spaced apart from the light-transmitting element, and includes a light emitting element and a light sensing element. The first part of light emitted by the light-emitting element is transmitted through the light-transmitting element, and after being reflected by an object on the other side of the light-transmitting element, is transmitted through the light-transmitting element again and irradiates on the photosensitive element. The light shielding element is at least partially disposed between the light emitting element and the photosensitive element. The light-shielding element is provided with a cutout to allow the second part of light emitted by the light-emitting element to be reflected by the outer surface of the light-transmitting element and irradiate on the photosensitive element, and to excite the photosensitive element together with the first part of light. Through the above method, the distance sensor component of the present invention can effectively excite the photosensitive element, thereby solving the problem of black hair and avoiding the distance limitation between the light-transmitting element and the distance sensor.

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 conference online method and a conference system, the method comprising the following steps: establishing a data connection with a conference host; capturing a display image on the connected electronic device; sending the captured display image to the conference host information to display and share. The invention has the characteristics of convenient operation and time saving.

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.

The invention, which belongs to the measuring method technology field, relates to a real-time difference measuring apparatus for a regular moving boat-carrying base station and a working method thereof. According to the method, on the condition of a static state of a boat-carrying GNSS base station, a long-time positioning operation is carried out and an accurate initial position of the base station is obtained; a moving regularity of the boat-carrying GNSS base station is determined according to a position relation of between a target working area of the boat-carrying GNSS base station and atarget working area of an RTK flow station; and at the same time, an observation speed, a predetermined speed and driving time of the base station are processed, a track error of the base station is calculated and decided, and a driving state of the boat-carrying GNSS base station is also adjusted. In the case of determination of a speed and a starting position of a course of the boat-carrying GNSS base station, an accurate and real-time position of the boat-carrying GNSS base station can be obtained; and a carrier phase difference operation is carried out on range information, carrier information, and navigation message information of the boat-carrying GNSS base station so as to obtain a difference correction number; the difference correction number is sent to the RTK flow station by a data link unit, so that real-time difference measurement of the regular moving boat-carrying base station is completed.