Abstract: An anchor rod includes a sleeve open at one end and having a blocking plate at the other end; a pressure relief pipe fixedly arranged on an inner wall of the sleeve; and a rod body. A guide hole is formed in a center of the blocking plate. A part of the rod body penetrates through the guide hole and extends into the sleeve. A gap is formed between the pressure relief pipe and the blocking plate. An overflow valve is connected to the pressure relief pipe. A piston in sliding seal fit with the sleeve and the pressure relief pipe is arranged at the rod body. A sealing ring in sliding seal fit with the rod body is arranged at the inner wall of the guide hole; and a sealing cavity between the blocking plate and the piston in the sleeve is filled with emulsion.

Abstract: The present invention relates to wireless communication technology, and particularly relates to a signal transmission method and a communication device. The signal transmission method includes: transmitting, by a first communication node, a signal on one or more first channels located in a primary transmission channel and/or a secondary transmission channel of the first communication node, and before transmitting the signal, performing channel protection on a transmission channel where the first channel is located and/or the primary transmission channel. Correspondingly, further provided is a communication device.

Abstract: A battery system includes the battery compartment, haploid battery, polyploid battery and power management system; the bottom of battery compartment is divided into several elementary unit compartments provided with power jacks at four corners; each power jack is connected through a wire to form a power output terminal, then connected to the input terminal of the power management system; the size of the haploid battery matches that of a single elementary unit compartment, the polyploid battery isn't arranged in a single row, and two power contacts matching with the power jack are arranged on the diagonal of the battery's bottom surface; after power on, the power management system applies logics to determine models of the batteries in different positions of the battery compartment according to the voltage signal detected, then integrate voltage of each battery to the voltage required by appliance.

Abstract: A crank and connecting rod mechanism which can realize a Miller cycle and its control method, wherein an interior of a crankshaft is provided with a drive oil channel and a lock-up oil channel. A connecting rod neck of the crankshaft is arranged with an eccentric connecting rod bearing. In a crankshaft balance weight, a drive gear meshing with an outer meshing gear ring of the eccentric connecting rod bearing through an idle gear is installed. A planetary gear is installed in a drive gear hollow shaft. A lockpin is designed for the drive gear hollow shaft so as to lock with the crankshaft balance weight or with a planetary gear shaft.

Abstract: An anchor rod includes a sleeve open at one end and having a blocking plate at the other end; a pressure relief pipe fixedly arranged on an inner wall of the sleeve; and a rod body. A guide hole is formed in a center of the blocking plate. A part of the rod body penetrates through the guide hole and extends into the sleeve. A gap is formed between the pressure relief pipe and the blocking plate. An overflow valve is connected to the pressure relief pipe. A piston in sliding seal fit with the sleeve and the pressure relief pipe is arranged at the rod body. A sealing ring in sliding seal fit with the rod body is arranged at the inner wall of the guide hole; and a sealing cavity between the blocking plate and the piston in the sleeve is filled with emulsion.

Abstract: A wire connection terminal for a photovoltaic string is provided. The wire connection terminal includes: a terminal connector, a fuse and a printed circuit board (PCB). The terminal connector is connected to a positive electrode or a negative electrode of the photovoltaic string. The fuse is configured to prevent the photovoltaic string from outputting an excessive current. The PCB is configured to sample an output current and an output voltage of the photovoltaic string, communicate with an inverter, and control the photovoltaic string to disconnect from a direct current bus and output abnormal data for display when the output current and/or the output voltage of the photovoltaic string is abnormal or a system failure occurs.

Abstract: A radio frame processing method applied to a first station. The method includes: after detecting a first radio frame, determining whether the first station is in an associated state; if the first station is in the associated state, determining a home situation of the first radio frame according to first attribute information carried in the first radio frame and second attribute information corresponding to a first access point station with which the first station is associated, and performing carrier detection according to a first preset rule based on the home situation of the first radio frame; and if the first station is in an unassociated state, performing the carrier detection according to a second preset rule.

Abstract: A crank and connecting rod mechanism which can realize Miller cycle and its control method, wherein an interior of a crankshaft is provided with a drive oil channel and a lock-up oil channel. A connecting rod neck of the crankshaft is arranged with an eccentric connecting rod bearing. In a crankshaft balance weight, a drive gear meshing with an outer meshing gear ring of the eccentric connecting rod bearing through an idle gear is installed. A planetary gear is installed in a drive gear hollow shaft. A lockpin is designed for the drive gear hollow shaft so as to lock with the crankshaft balance weight or with a planetary gear shaft.

Abstract: A battery system includes the battery compartment, haploid battery, polyploid battery and power management system; the bottom of battery compartment is divided into several elementary unit compartments provided with power jacks at four corners; each power jack is connected through a wire to form a power output terminal, then connected to the input terminal of the power management system; the size of the haploid battery matches that of a single elementary unit compartment, the polyploid battery isn't arranged in a single row, and two power contacts matching with the power jack are arranged on the diagonal of the battery's bottom surface; after power on, the power management system applies logics to determine models of the batteries in different positions of the battery compartment according to the voltage signal detected, then integrate voltage of each battery to the voltage required by appliance.

Abstract: Disclosed are a signal transmission method and a corresponding device. The method the present disclosure includes: acquiring a second-type target station that matches a first-type target station; making a channel reservation with the second-type target station; and after the reservation is completed, transmitting a first signal to the first-type target station.

Abstract: Disclosed are a data transmission method, an access point and a station. The method comprises: sending a radio frame to a plurality of stations, triggering the stations to perform unlink multi-user transmission, and when the stations belong to different basic service sets of the access point, setting a sending address of the radio frame to be a public address.

Abstract: Disclosed are a method for establishing a direct connection link, and a method and a node for same realizing data transmission thereby. The establishment method comprises: establishing a direct connection link between a first node and a second node, determining a policy according to pre-set direct connection control information, and determining direct connection control information corresponding to the established direct connection link. The method disclosed herein realizes, by determining, for a direct connection link, specialized direct connection control information for identifying the direct connection link, optimization of the establishment and transmission process of the direct connection link, such that the direct connection link well distinguishes from a link of a basic network architecture, thus improving the network efficiency.

Abstract: Provided in the present invention are a method and device for competitive transmission. The method comprises: an access point transmits a trigger frame or a radio frame carrying a trigger information domain to a non-access point to trigger the non-access point to perform uplink multiuser transmission; and, when data transmitted by the non-access point is received by the access point, same resets a competitive window of an access type to an initial value.

Abstract: Provided is a channel access method. The method includes: after a radio frame is received, determining that the radio frame is an overlapping basic service set (OBSS) radio frame; determining that the OBSS radio frame is a radio frame of a specified type or determining whether the OBS S radio frame carries specific spatial multiplexing instruction information; updating a local network allocation vector according to duration information carried in the OBSS radio frame; and performing channel access according to the local network allocation vector. Provided are a channel access device and a storage medium.

Abstract: Disclosed is a network access method, including that a station receives a first radio frame from a first access point, where the first radio frame indicates a resource unit for a random-access operation; and when the sending address of the first radio frame is a public identity or a private identity, the station performs the random-access operation. Also disclosed are a network access apparatus and a storage medium.

Abstract: Disclosed are a data transmission method, an access point and a station. The method comprises: sending a radio frame to a plurality of stations, triggering the stations to perform unlink multi-user transmission, and when the stations belong to different basic service sets of the access point, setting a sending address of the radio frame to be a common address.

Abstract: Transmission control methods and devices for avoiding data collision are provided. According to the methods, a first radio frame is generated by a first station. The first radio frame includes a physical layer preamble, a null instruction information domain and a data section. The null instruction information domain is used for triggering an access point in another basic service set. The basic service set receives the first radio frame to send a second radio frame. The second radio frame indicates a time for reserving a channel. According to the methods, the first radio frame is sent by the first station.

Abstract: A method and system for performing low power synchronization between to communication nodes is disclosed herein. In one embodiment, a method performed by a first wireless communication node includes: determining a wake up window start time and duration of a second wireless communication node; and transmitting at least one signal to the second wireless communication node during the determined wake up window, the at least one signal comprising at least one synchronization sequence, wherein the at least one synchronization sequence is configured to enable the second wireless communication node to adjust its wake up window timing.

Abstract: A method for radio frame transmission, applied to a communication station, is provided, the method including: receiving a request frame sent simultaneously or in a time-sharing manner by one or more stations; and sending a broadcast response frame to the one or more stations. Also provided is a device for radio frame transmission. The solutions of the present application can improve the transmission efficiency.

Abstract: Access to a wireless medium is controlled based on contention arbitration. A certain number of wireless devices are allowed by an access point to contend for a transmission opportunity. A trigger frame is used to communicate access opportunities to multiple devices. A beacon transmission may additionally be used for communication of access opportunities.