30results about How to "Reduce the number of launches" patented technology

[PROBLEM TO BE SOLVED] Achieve power saving without causing a connection delay [SOLUTION] A wireless relay device (2 to 4) that emits a beacon and makes a wireless connection with a terminal (5ˆ¼7) responding to the beacon, which includes a selecting means (10) capable of alternatively selecting a normal mode in which the beacon is emitted in a first cycle and a power saving mode in which the beacon is emitted in a second cycle longer than the first cycle. Since a beacon is emitted In the second cycle longer than the first cycle, the number of times of beacon emissions can be decreased to improve power saving capability. Also, since the beacons are not disrupted, a connection delay is not caused.

The invention provides a signal acquisition method. The method comprises a signal transmission process after obtaining various sampling signal values. The signal transmission process comprises the following steps: selecting an acquired signal value as a first signal value and transmitting the first signal value; then comparing each signal value from a second signal value after the first signal value with a previous signal value, and transmitting the signal value if the difference value between the signal value and the previous signal value exceeds a certain numerical value or a certain ratio.In the method, the difference values between the signal values are compared and judged to determine whether the signal values are transmitted or not, thus saving the power consumption of the transmission link; and the method helps control the sampling frequency in real time, thus reducing unnecessary sampling times and saving the power consumption of the transmitting link. The method merges the real-time sampling and electricity saving.

The present invention provides a resource competition method and a user equipment (UE), and a method and a device for using resource competition, which solve the problem of resource competition. The resource competition method comprises: selecting a sending opportunity frame comprising a monitoring-preempting subframe and a transmission subframe, wherein the monitoring-preempting subframe comprises a plurality of preemption time slots; determining that selected discovery resources are exclusive discovery resources through analysis of the states of different UEs in the plurality of preemption time slots of the monitoring-preempting subframe; and sending a neighbor identity indication code on the exclusive discovery resources through the transmission subframe. The method for using resource competition comprises: receiving a sending opportunity frame sent by a UE; determining an occupancy state or an idle state of the discovery resources according to the sending opportunity frame; and scheduling the idle discovery resources. The technical solution solves the problem that collision frequency is too high in resource competition, so that the transmission times and power consumption of the UE are reduced.

The invention discloses a control method and a control device of multi-section tomography detection of foundation piles. The control method comprises the following steps: A. acoustic sensor groups are respectively placed on bottom of a sounding pipe and are connected with a detecting module of an acoustic instrument, wherein cables of the acoustic sensor groups can drive a height position coder to roll in a synchronous lifting process; B. a computer system sets parameters; C. a control unit detects the height position of the current detection point according to the parameters set by the computer system; and D. the acoustic sensor groups are synchronously lift, wherein the cables of the acoustic sensor groups drive the height position coder, the control unit reads the position output by the height position coder and executes the step C when arriving at the height position of the detection point. The device is composed of the acoustic instrument, the height position coder and the acoustic sensor groups, the detection efficiency is high, and the device can control the acoustic instrument to finish the osite tomography detection work of all sections formed by M sounding pipes within a lifting detection process so as to reduce the failure rate of the detection device and improve the onsite detection efficiency.

The invention discloses a synthetic aperture three-dimensional ultrasonic imaging method based on non-diffraction array waves or plane wave sound fields. In the method, a one-dimensional sensor array is adopted for emitting non-diffraction array waves or plane wave sound fields, the one-dimensional sensor array is moved to scan the whole imaging zone, and a synthetic aperture technology is adopted for comprehensively processing and imaging echo signals in the whole target zones. The sensor can be moved in a mechanical scanning way or in a way of exciting rows or columns of a two-dimensional array in sequence. In order to re-create a three-dimensional image, firstly, the echo signals are subjected to Fourier transformation, and the transformed frequency spectrum signals are subjected to variable transformation so that the frequency spectrum of the image can be obtained; and then the three-dimensional imaging of the imaging object can be completed through Fourier transformation. In all the current three-dimensional ultrasonic imaging methods, the imaging method disclosed by the invention has the characteristics of high imaging speed and high imaging quality and has an extremely favorable application prospect.

The invention discloses an alarm management method of a vehicle tyre pressure monitoring system, which comprises the following steps of: measuring the pressure, the temperature and the acceleration of a tyre at fixed time through a tyre pressure sensor, comparing the pressure, the temperature and the acceleration with preset standard values and then judging whether conditions of low pressure, high pressure, rapid air leakage and high temperature exist; if judging that a condition needing to give an alarm exists, writing alarm information on a corresponding data mark bit, sending out the alarminformation in a radio frequency mode within setup time and simultaneously counting the emitting times of the alarm information; and after the counted emitting times of the alarm information reach a preset numerical value, stopping emitting the same alarm information and recovering normal timed monitoring and timed information emitting states. The method of the invention can effectively reduce the mutual interference among signals, decrease the electric power consumption of a battery and prolong the service life of the tyre pressure sensor.

The invention discloses an ultrasonic liquid level detection method. Ultrasonic liquid level gauges currently on the market have complex structures, inconvenient use, and low measurement accuracy. The invention relates to an ultrasonic liquid level gauge, comprising a power supply module, a control module, a sensor, an ultrasonic transmitting module, an ultrasonic receiving module, a temperature compensation module and piezoelectric ceramics. The power supply module supplies power to the control module, the ultrasonic transmitting module, the ultrasonic receiving module, the temperature compensation module and the output module through the first voltage regulator, the second voltage regulator, the switching regulator and the ultra-low voltage regulator. The temperature compensation module detects the ambient temperature through the temperature sensor and transmits it to the control module. The control module sends an ultrasonic control signal to the ultrasonic transmitting module through a single-chip microcomputer; the ultrasonic transmitting module boosts the ultrasonic control signal through a high-frequency transformer and transmits it to the piezoelectric ceramic. The invention can avoid the problem of inaccurate measurement caused by the blind area.

The present invention discloses a communication managing and controlling method for a wireless local area network. The present method includes that 1) a network card drive of a blocking device is modified so as to enable the blocking device to send blocking frames at intervals no greater than the short interframe space (SIFS); 2) the blocking device scans the surrounding wireless local area network environment, and obtains MAC addresses of an access point (AP) and a terminal (STA) working in a to-be-blocked channel; 3) the blocking device establishes a channel MAC address list including all MAC addresses of all the access points (Aps) and terminals (STA) to be blocked of the channel regarding each channel; and 4) the blocking device fills the MAC address in the channel MAC address list of the channel into a destination address field of a blocking frame and then sends the blocking frame regarding each channel to be blocked. The communication managing and controlling method greatly increases information security of secret units or regions, and has a small effect on the surrounding electromagnetic environment.

The present invention discloses an energy saving micro water surface buoyant tracker which comprises a sealing container. The sealing container can be detached into two parts referred to as a first sealing cabin and a second sealing cabin. The first sealing cabin is provided with a missing system controller, a water environment parameter sensor, a wireless data communication module and a GPS positioning module. The missing system controller is provided with a data storing device and a data controller. The water environment parameter sensor, the wireless data communication module and the GPS positioning module are communicated with the missing system controller respectively and are all powered by the missing system controller. The second sealing cabin is provided with a battery group and a counterweight. The battery group is connected with the missing system controller. Simple in structure and convenient to operate, the energy saving micro water surface buoyant tracker of the invention is also energy saving and environmentally friendly. While achieving accurate data with fewer investments, it can be used for multi-times.

The invention discloses a channel resource control method based on de-association / de-authentication frame. This method is as follows: 1) modify the network card driver of the blocking device, so that the blocking device can send association / deauthentication frames no greater than the short inter-frame interval SIFS; 2) the blocking device scans the surrounding wireless LAN environment, and obtains the 3) The blocking device establishes a channel MAC address list containing the MAC addresses of all access points APs and terminal STAs to be blocked for the channel for each channel; 4 ) For each channel to be blocked, the blocking device fills the MAC address in the channel MAC address list of the channel into the disassociation / deauthentication frame according to the framing rules and sends it to the corresponding channel to be blocked. The invention greatly improves the information security of secret-related units or regions, and has little influence on the surrounding electromagnetic environment.

The invention discloses a mixed measuring ruler-based phase type laser distance measuring method. According to the method, measuring rulers of a plurality of frequencies are mixed through a frequency mixer, so that a mixed measuring ruler can be obtained; and the mixed measuring ruler is transmitted to a target through a laser transmitter. With the mixed measuring ruler-based phase type laser distance measuring method adopted, the laser measuring ruler is only needed to be transmitted for once, and a plurality of measuring rulers with different frequencies can be obtained, and therefore, the number of transmitting times of the laser measuring ruler can be effectively reduced, and measuring speed can be improved, and moving targets can be also measured accurately. The mixed measuring ruler-based phase type laser distance measuring method of the invention has the advantages of short measuring response time, low possibility of making mistakes in the tracking of the moving objects and low implementation difficulty.

The invention provides a planar ultrasonic imaging processing method and device based on virtual multi-angle composition at a receiving end, and aims to solve the problem that frame frequency and precision of single planar ultrasonic waves cannot meet the demand simultaneously in the prior art. According to the planar ultrasonic imaging processing method, received first echo data is subjected to virtual delaying, second echo data of receiving planes at different angles are obtained, and the second echo data of the receiving plane at each angle is subjected to beam forming according to the delay superposition principle, so that an image of the receiving plane at each angle is obtained; the images of the receiving planes at different angles are superposed, and a final image of the single planar ultrasonic waves is obtained. According to the single planar ultrasonic imaging processing method in the embodiment, single-pass planar wave emitting image quality is improved, planar wave emitting times are reduced, so that imaging frame frequency of the system is improved, and the method is compatible with a conventional method.

The embodiment of the invention discloses a network switching control method and device. The method comprises the following steps of acquiring a reference climbing step length of transmitting power ofa preamble configured by a target serving cell, wherein the preamble is used for identifying the identity of a mobile terminal when the mobile terminal performs random access; the serving cell, whichis currently accessed by the mobile terminal, and the target serving cell are serving cells in a heterogeneous communication system; updating a step length ascending sequence of the transmitting power according to the reference climbing step length, wherein a first average climbing amplitude value of the updated step length ascending sequence is larger than a second average climbing amplitude value of the step length ascending sequence before updating, and the step length range corresponding to the first average climbing amplitude value and the second average climbing amplitude value is included in an ascending step length range of initial ascending step length to reference ascending step length; and carrying out random access according to the updated power ascending step length sequence.According to the embodiment of the invention, network switching time consumption of the mobile terminal is reduced, and real-time performance of data transmission is improved.