266results about How to "Avoid direct connection" patented technology

A method of distributing charging power among a plurality of charge ports of a battery charging station is provided, where the battery charging station includes a plurality of power stages where each power stage includes an AC to DC converter and provides a portion of the charging station's maximum available charging power, the method comprising the steps of (i) monitoring battery charging station conditions and operating conditions for each charging port; (ii) determining current battery charging station conditions, including current operating conditions for each charging port; (iii) determining power distribution for the battery charging station and the charging ports in response to the current battery charging conditions and in accordance with a predefined set of power distribution rules; and (iv) coupling the power stages to the charging ports in accordance with the power distribution.

The invention provides a trolley bus system and relates to the technical field of public transportation. The trolley bus system comprises a support, a track, a bus body and a power device. The support is erected over the road and extends in the length direction of the road. The track is erected on the upper surface of the support and extends in the extending direction of the support. The bus body is connected with the track and moves along the track relative to the support. The power device is arranged on the support and electrically connected with the bus body. A partition is arranged between the bus body and the road for vehicles on the road to run. According to the trolley bus system, the support is erected and paved with the track so that vehicles can run on the road surface and the space over the road respectively, and the transportation space of the city is developed. A power circuit is integrally fixed, and the disorder condition of the power circuit of a trolley bus is eradicated.

The invention discloses a shared parking spot parking management system and method for controlling intelligent parking locks online. The system comprises an intelligent parking lock (containing a first NB-IoT DTU module, a geomagnetic sensor, a controller and a motor), a parking management cloud platform, and a mobile client. According to the method, the intelligent parking lock is connected to the parking management cloud platform by using the narrow band Internet of things NB-IoT technology, and the state information of the intelligent parking lock can be acquired and the intelligent parkinglock can be controlled online. The NB-IoT technology has the characteristics of low power consumption, low traffic, wide laying range, remote control, convenience and reliability, and the like, and facilitates the realization of parking spot sharing. The system and the method overcome the problem that the existing intelligent parking lock depends on close-range Bluetooth or ultrasonic control andthe system cannot acquire the real-time state of the parking lock, can only control the parking lock offline and cannot manage the parking lock remotely. A good solution is provided for solving the difficulty of parking in cities through shared parking spots. The system and the method are convenient to implement, and have good economic benefit and application prospect.

The invention discloses a charging device and a charging method of a mobile terminal, which is applied to the mobile terminal with a system connector or a special charging interface. The mobile terminal is connected with an external charger. The invention is characterized in that the charging device comprises a digital baseband unit, an analog baseband unit, an or gate device, a charging module and batteries. As a platform based on software control charging is adopted, various unconventionalities of charging function in cellphone design are resolved, thereby improving the reliability of charging function of such cellphone, additionally further being capable of reducing the development difficulty of charging module softwares, shortening the debugging period of charging modules, and improving the quality of research and development.

The invention provides a safety application system for a mobile terminal to automatically switch between different channel networking interfaces. The safety application system can prevent the special data network from being directly connected with the Internet and avoid invasion of the Internet. According to the technical scheme, an application layer comprises a browser, a client terminal, an application program and an embedded channel switching program module. The special data network is constructed in the internal data network which is physically isolated from the Internet. The internal data network is connected with a VPDN special line or an APN network and at the same time, connected with the GGSN of the mobile network or the SGSN of a regional gateway. When the application layer detects the demand for switching to a different networking network, the embedded channel switching function module is called, the current Internet networking channel is closed, networking parameters of a networking sub-system of the current mobile terminal are rectified, APN networking parameters and/or VPDN networking parameters of the special data network are designated to the application layer and the networking request is provided.

The invention relates to a cabinet body structure, which belongs to the technical field of manufacturing of furniture. The cabinet body structure comprises a plurality of cabinet plates which are encircled into a cabinet body, wherein an opening for accommodating a cabinet door is formed on at least one side of the cabinet body; side edges of adjacent cabinet plates are connected with each other through an upright post; the upper side edge and the lower side edge of each cabinet plate are provided with an upper transom and a lower transom respectively; the opening for accommodating the cabinet door comprises two upright posts which are positioned on the left side and the right side and an upper transverse door stop and a lower transverse door stop which are positioned on the upper side and the lower side and are transversely erected between the two upright posts; the upper transom, the lower transom, the upper transverse door stop and the lower transverse door stop have hollow structures; the two ends of the upper transom, the two ends of the lower transom, the two ends of the upper transverse door stop and the two ends of the lower transverse door stop are spliced with one end of a joint block through respective hollow structure; a binding head which can be fitted in a connecting groove of an upright post and prevents the joint block from being separated from the upright post is formed at the other end of the joint block; and the cabinet plates, the upright posts, the upper transom, the lower transom, the upper transverse door stop, the lower transverse door stop and the joint block are made of sections.

The present invention provides a synchronous rectification control circuit, a method and a flyback switching circuit. A drive circuit outputs a drive signal to control the turn-on and turn-off of a synchronous rectification transistor; a threshold comparison circuit controls the drive circuit to output a pull-up drive signal to turn on the synchronous rectification transistor when a drain-source voltage is lower than a preset low threshold voltage and controls the drive circuit to output a pull-down drive signal to turn off the synchronous rectification transistor when the drain-source voltage is higher than or equal to a preset high threshold voltage; a voltage regulation control circuit controls the drive circuit to output a drive signal for pulling up a voltage of the drive signal to a preset pull-up voltage high value when the drain-source voltage is lower than a preset voltage regulation reference value.

The invention relates to a cast aluminum heat exchanger of a gas-fired boiler. The cast aluminum heat exchanger of the gas-fired boiler comprises a front module, a middle module and a back module, wherein a water channel is arranged in each module, a flue is formed between adjacent modules, the front module, the middle module and the back module are formed through die casting, each water channel consists of a main water inlet channel, a heat exchange water channel and a main water outlet channel, the heat exchange water channel in each module is communicated with the main water inlet channel and the main water outlet channel, the main water inlet channels of adjacent modules are communicated and the main water outlet channels of adjacent modules are communicated. Since the cast aluminum heat exchanger is formed by adopting the die casting process instead of the sand casting process, the production efficiency is improved and the manufacturing cost is reduced; since the main water inlet channels, the heat exchange water channels and the main water outlet channels are all built in the modules, the size of the heat exchanger is reduced, the assembling structure is simplified and the installation steps and the material costs of the water channels are reduced.

The invention discloses a double-clad fiber and photonic crystal fiber connecting method. The method includes the steps that a double-clad fiber is tapered, and the tapered double-clad fiber and a photonic crystal fiber are connected through a transition fiber. The method effectively solves the problem that the double-clad fiber and the photonic crystal fiber are difficult to connected in a melting mode in the prior art. The double-clad fiber and the photonic crystal fiber are connected through the transition fiber, so that the double-clad fiber and the photonic crystal fiber are prevented from being connected directly. Besides, before connection, the double-clad fiber is tapered, so that the fiber core diameter and the cladding diameter of the double-clad fiber are reduced. By means of the method, connection difficulty of the double-clad fiber and the photonic crystal fiber can be effectively lowered.

The present invention relates to a scientific instrument working state monitoring method based on control computer. It is composed of three portions of sate data acquisition, state data processing and data telecommunication terminal. Said state data acquisition portion adopts a multimode combined detection method based on mouse keyboard hook, software interface characteristics, journal file and communication interface data flow. It is characterized by utilizing detection for control software and control computer to obtain working state of instrument. The state data processing portion is used for processing state data into unified format. The data telecommunication terminal can be used for sending data into remote monitoring server, and the communication mode of said data telecommunication terminal and control computer has RS-232, USB and TCP/IP, and the telecommunication mode includes ADSL, LAN, WLAN, GPRS and CDMA.

The embodiment of the invention provides a data transmission method and a data transmission device based on an isolation network. The method comprises the steps of encrypting data to be transmitted; subpackaging and coding the encrypted data; group packaging the subpackaged and coded data, wherein the group packaged data carries a package order; and displaying an image corresponding to the group packaged data. Via the data processing modes of encrypting, subpackaging, coding and group packaging the data to be transmitted, the security of the data to be transmitted is ensured; in addition, theimage corresponding to the group packaged data is displayed, so that the other devices can acquire the data to be transmitted by acquiring the image when acquiring the data to be transmitted; according to the method and the device provided by the embodiment of the invention, the problem that in the prior art, the isolation network is inconvenient to transmit data is solved.

The invention discloses a gas extraction method by using a major diameter pipeline and sealing transverses between a mine goaf and a tail roadway. The method includes the following steps of dividing the mine goaf into a plurality of mine sub-goafs; establishing a first gas channel from an air inlet roadway to an air return roadway through a fully mechanized coal mining face; paving a gas extraction pipeline in a tail gas roadway; sealing the traverses between the tail gas roadway and the plurality of mine sub-goafs; and arranging a plurality of branch pipe systems which are communicated with the gas extraction pipeline in the sealed transverses corresponding to the plurality of mine sub-goafs so as to form a plurality of second gas channels from the air inlet roadway to the gas extraction pipeline through the plurality of mine sub-goafs and the branch pipe systems so that simultaneous extraction of the deep portion of the mine goaf and the neighboring areas of the fully mechanized coal mining face is achieved. By means of the method, the gas amount of an extraction goaf is large, the extraction negative pressure is far higher than ventilation negative pressure, effective interference to gas leakage fields of the mine goaf can be formed, and high concentration gases on deep portions and upper portions of the mine goaf are prevented from inrushing toward upper corner and return current.

An electronic cigarette device comprises a cigarette holder, a cigarette holder base, a smoke passage located at the rear of the cigarette holder base, an atomizing core located in the smoke passage, and a buffer module disposed between the cigarette holder base and the smoke passage. A cavity is formed between the buffer module and the cigarette holder base. A buffer smoke passage is further arranged in the cavity. The buffer smoke passage is located between the cigarette holder and the smoke passage. The cigarette holder is not linearly communicated with the smoke passage in the straight direction by the buffer smoke passage. The electronic cigarette device has the advantages that the smoke passage is prevented from being directly communicated with the cigarette holder, tobacco tar is prevented from entering the oral cavity, the effective length of the smoke passage is increased relatively, the contact area of smoke and the smoke passage is increased, smoke temperature is lowered favorably, the mouth mucosa and respiratory tract are prevented from being burnt by the smoke, explosion sound is reduced, and user experience is enhanced.

The invention discloses cell culture equipment, and belongs to the technical field of biomedical cell culture. The cell culture equipment mainly comprises a sample injection chamber, a culture chamberand a motor chamber, and specifically comprises a culture dish conveying device, a culture dish-cover separation and closing device, a liquid changing device, an air filtering system, a disinfectingheating device, an automatic control system and a culture dish. According to the present invention, with the cell culture equipment, the isolation between the culture chamber and the outside world isachieved, the culture condition of the cells in the culture dish can be real-timely observed or shot and recorded, the automatic replacement of the culture liquid is achieved, and the gas in the culture dish and the gas in the culture chamber can be freely and smoothly exchanged while the water in the culture dish cannot be removed from the culture dish by evaporation. In the prior art, the pollution in the incubator is easily caused during the taking and placing of the culture dish, the manual adding or replacing of the culture liquid is cumbersome in the operation and easily causes the liquid changing error or the culture liquid pollution, and the growth condition of the cells in the culture dish is inconveniently observed. With the cell culture equipment of the present invention, the problems in the prior art can be solved.

The invention provides an electric hunting vehicle. The bottom of the vehicle body is provided with a frame which is connected with an auxiliary frame which is provided with a suspension damping system which consists of a damping system left component which comprises a left upper swing arm, a left lower swing arm, a left damper and a left stanchion, a damping system middle component which comprises the auxiliary frame, an upper swing arm bracket, a lower swing arm bracket and a transverse rod, and a damping system right component which comprises a right upper swing arm, a right lower swing arm, a right damper and a right stanchion; all components are hinged movably. The damping system leads the hunting vehicle to move stably on rugged mountainous landform, effectively avoids the rupture of vehicle bridges caused by sharp vibration, and has obvious damping effect. Furthermore, the damping system has small volume and easy installation and increases the service life of the hunting vehicle.

The invention discloses an improved charging pile for electric vehicles. The improved charging pile comprises a charging pile body and a charging gun connected to the charging pile body in a pluggingmatching manner, wherein a plugging cavity is formed in the left side end surface of the charging pile body, a power connection block is fixedly arranged on the right inner wall of the plugging cavity, first sliding slots are symmetrically formed in the upper and lower inner walls of the plugging cavity, stopping blocks are mounted in the first sliding slots in the sliding fit manner, first guiding and sliding slots are symmetrically are formed in the left and right inner walls of each first sliding slot, first guiding and sliding blocks fixedly connected with the stopping blocks are mounted in the first guiding and sliding slots in a sliding fit manner, a first ejection spring is connected to one side, away from the plugging cavity, of each first guiding and sliding block in an ejection manner, and the tail end of one side, away from the plugging cavity, of each sliding slot extends rightwards to form a second sliding slot.

The invention discloses a database access method and a database access system based on cloud calculation. The database access method based on cloud calculation comprises the following steps of: receiving the database access request sent by a cloud user; matching database metadata carried in the database access request with the metadata of each database in a cloud system, and determining the database to be accessed according to the database access request; analyzing the database access request to obtain an SQL statement; executing the SQL statement on the current database connection of the user to obtain an execution result; converting the execution result to the data format used by the cloud user and then feeding back to the cloud user.

The invention discloses an improved charging pile for electric vehicles. The improved charging pile comprises a charging pile body and a charging gun connected to the charging pile body in a pluggingmatching manner, wherein a plugging cavity is formed in the left side end surface of the charging pile body, a power connection block is fixedly arranged on the right inner wall of the plugging cavity, first sliding slots are symmetrically formed in the upper and lower inner walls of the plugging cavity, stopping blocks are mounted in the first sliding slots in the sliding fit manner, first guiding and sliding slots are symmetrically are formed in the left and right inner walls of each first sliding slot, first guiding and sliding blocks fixedly connected with the stopping blocks are mounted in the first guiding and sliding slots in a sliding fit manner, a first ejection spring is connected to one side, away from the plugging cavity, of each first guiding and sliding block in an ejection manner, and the tail end of one side, away from the plugging cavity, of each sliding slot extends rightwards to form a second sliding slot.

The invention provides a pile foundation pile head concrete pre-stripping assembly and a construction method. The assembly comprises a pre-embedded isolation component, a pre-embedded splitting component, splitting equipment and hoisting equipment. The pre-embedded isolation component comprises main reinforcement sleeves and acoustic testing pipe sleeves. The preembedded splitting component comprises a set of horizontal splitting pipes pre-embedded on a fracture surface. The splitting equipment comprises hydraulic splitting machines. The hydraulic splitting machines are inserted into the horizontal splitting pipes from the two sides to conduct splitting to form the fracture surface during breaking and stripping. The hoisting equipment comprises a lifting tool, a lifting hook and a steel wire rope. The steel wire rope penetrates through the split and broken horizontal splitting pipes and is connected with the lifting hook, so that pile head concrete is stripped off from reinforcements and acoustic testing pipes. The pile foundation pile head concrete pre-stripping assembly can be made of engineering leftover materials and is low in cost. During construction, the fracture surface is formed through the hydraulic splitting machines, and then the pile head concrete can be broken and stripped off. The process can be completed only by one person. The hydraulic splitting machines can provide smooth pile head connecting surfaces to facilitate later pile foundation detection and follow-up construction. The pile foundation pile head concrete pre-stripping assembly is easy to operate, low in technical requirement, good in breaking and stripping effect and high in efficiency.