18 results about "Short distance" patented technology

The invention relates to the technical field of wireless communication, in particular to a method and a device of paring connection of equipment. The method and the device of the pairing connection of the equipment is used for solving the problems that a pairing operation process is verbose when short distance of information transmission is carried out by the equipment, and time of pairing is long. The method of the paring connection of equipment comprises detecting equipment in a preset range through short distance communication technology, reading corresponding identification information of the detected equipment, comparing read identification information and the corresponding identification information of beforehand selected equipment and judging whether the read identification information and the corresponding identification information of the beforehand selected equipment are consistent or not, and building up communication connection with the detected equipment when the read identification information and the corresponding identification information of beforehand selected equipment are consistent. Therefore, automatic pairing connection with the beforehand selected equipment is achieved without the need of manual search and lookup of bluetooth equipment by a user, efficiency of the pairing connection and user experience are improved.

A communication apparatus capable of easily identifying a communication partner and securely sharing a session key between the communication apparatus and the communication partner even if the communication apparatus has a processing power that is not so high includes a short-range active communication unit 101 transmitting an inquiry signal to a short-range external communication apparatus by electromagnetic waves and waiting for a response to the inquiry signal; a long-range communication unit 104 capable of communication by the electromagnetic waves in a range wider than the communication area of the short-range active communication means; a switching unit 111 switching to either the short-range active communication unit or the long-range communication unit; and an asymmetric key generator 102 generating a pair of an encryption key and a decryption key corresponding to the encryption key. The communication apparatus is characterized by using the decryption key to decrypt an encrypted session key transmitted from the external communication apparatus and transmitting to the external communication apparatus a communication switching request signal to request the switching to the long-range communication unit and communication by using the long-range communication unit.

A gesture spotting detection method and apparatus employ a shoulder-line algorithm. The shoulder-line detecting method recognizes a GSD calling gesture that occurs in a shoulder-line, head or higher part in a remote distance or a short distance, although a user does not have a fixed posture. In the method, an image of people is received, and skin information of a person in the image is detected to detect a face area. Then, the cloth color information of the person is modeled from the inputted image to detect a cloth area. An external space is defined from the image based on the body space area, and an edge is extracted from the image based on the body space and the external space. Then, shoulder-line information is acquired based on an energy function obtained based on the body space, the external space, and the edge.

An optical lens for lighting fixture includes a body, which comprises a bottom surface and a light-exit surface at opposing bottom and top sides thereof, an elongated groove formed in the bottom surface, a light incident surface, a first intersection line and a second intersection line respectively connected between the two ends of the elongated groove and the bottom surface, a first line segment and a second line segment respectively connected between the light incident surface and the bottom surface, a first virtual line defined between the two ends of the first line segment, a first distance that is the shortest distance between the two ends of the first intersection line, and a SAGi that is the shortest distance between any point at the first line segment and the first virtual line and satisfies the equation: 0≦|SAGi/first distance|×100≦2.8.

The invention discloses a method for refining rice bran oil by using short distance distillation. The method is implemented by putting crude rice bran oil in a buffer pot directly, transferring into a primary film evaporator by a pump for dehydration and desaeration, performing primary dehydration and desaeration under conditions of temperature being 60-120 DEG C and pressure being negative 0.8MPa to negative 0.95MPa; pumping the dehydrated and desaerated rice bran oil into a secondary short distance evaporator for deacidification with temperature controlled at 100-200 DEG C and pressure at 100-0.1Pa to obtain oleic acid with high acid value and rice bran oil with low acid value. The invention avoids heavy pollution processes of alkali refining and neutralizing chemical process for obtaining soda soap and process discharging waste water of washing when processing rice bran oil, the procedure is simple, high value oleic acid and low acid value rice bran oil can be distilled and separated, and the separation process is a physical process, the rice bran oil has no loss and the yield is very high.

The invention discloses a cooperative obstacle dodging method and a device thereof. The method comprises the steps of when an obstacle is detected in a flight advancing direction, acquiring position of the obstacle and contour of the obstacle, uniformly distributing a plurality of point sources along the contour of the obstacle, thereby forming a uniform potential field, constructing a potential function of the uniform potential field so that a constructed obstacle expulsive force potential function accords with the outer surface of the obstacle, and transmitting an obstacle dodging control instruction according to the position of the obstacle and the potential function. Because the plurality of point sources distributed on the outer surface of the obstacle generate the expulsive potentialfield which accords with the contour of the obstacle, after the expulsive force potential function which is same with the contour of the obstacle is constructed, the obstacle dodging control instruction is transmitted according to the distance to the obstacle and the expulsive force potential function, an unmanned aerial vehicle set can be made to smoothly dodge the obstacle with random shape andrandom size in a short distance. The cooperative obstacle dodging method and the device thereof improve applicability of the cooperative obstacle dodging method.

The invention discloses a rapid construction method of a long tunnel under complex geologic conditions, which comprises the following steps: S1, carrying out 30-150m long-distance geologic prediction on the geologic conditions of a tunnel, and carrying out 5-30m short-distance geologic prediction on the geologic conditions of the tunnel on the basis of the long-distance geologic prediction; S2, excavating wall rocks of IVb and V levels according to the geologic prediction conditions by adopting a bench cut method, and excavating wall rocks of III and IVa levels by adopting a full section method; S3, predicting underground water pressure of the tunnel at the water-rich section according to the geologic prediction conditions, and adopting different curtain grouting schemes; and S4, after tunnel excavation, monitoring and measuring the geologic conditions, primary support conditions, peripheral displacement and vault sinking value. The rapid construction method has the beneficial effect of safely and rapidly finishing tunnel construction tasks under poor geologic zones.

An address signal line having a stub structure connects between at least three memory elements and a data transferring element and transmits address signals for the memory elements. An address terminal of the data transferring element has an impedance lower than a characteristic impedance of the address signal line. A wiring length TL0 from the data transferring element to a first branch point S1 where a branch line is branched at a shortest distance from the data transferring element is configured to become equal to or greater than a wiring length TL1 from the first branch point S1 to a second branch point S2 where a second branch line is branched. A wiring length TL3 from the second branch point S2 to a third branch point S3 where a third branch line is branched is configured to become greater than the wiring lengths TL0 and TL1.

The invention discloses a vehicle-mounted card type highway traffic flow statistics and traffic jam forecasting method. A vehicle-mounted card (1) and a plurality of electronic base stations (2) mounted on each section of a highway are used in the method. The electronic base stations (2) communicate with the passing vehicle-mounted card (1) through short-distance telecommunication, and the card number, the vehicle type, the driving direction and the passing time of the vehicle-mounted card are obtained, subjected to statistics and sent to a superior center through a long-distance radio data transmission circuit in a timed, quantified or remote control manner to serve as the bases for a traffic jam forecasting signal; the electronic base stations are low in power consumption and small in size, can be conveniently mounted on each section of the highway according to the traffic flow monitoring requirements, and can work in all weathers without weather environment influence; the superior center can timely obtain or take the traffic flow of each monitoring point and send out a traffic jam forecast to a highway administration department according to a set traffic flow threshold.

The invention relates to a separated type optical testing device based on a commonly-used mobile intelligent terminal. The separated type optical testing device comprises an operation end based on the commonly-used mobile intelligent terminal and at least one testing front end. The testing front end comprises a data acquiring unit, a data processing and controlling unit and a short-distance communication unit which are connected in sequence. The data acquiring unit is used for obtaining data of a front end circuit. The data processing and controlling unit is used for processing the obtained data and calculating and controlling the obtained data. The short-distance communication unit is used for being communicated with the operation end. The operation end based on the mobile intelligent terminal comprises a man-machine interface unit for achieving a user interface, a main control unit for finishing device management and required numerical calculation processing, a short-distance communication unit for achieving an application communication protocol between the short-distance communication unit and the testing front end, and a wide-area communication unit for achieving a long-distance application communication protocol. The separated type optical testing device can form a man-machine interface with good experience and can form testing records in real time.

The invention relates to an electric energy quality analysis device based on a short-distance radio communication technology, and belongs to the technical field of electric energy quality detection. The device comprises an analog signal conditioning circuit, an analog-to-digital converter, a waveform buffer, a digital signal processor, a main controller, a screen display module, a button module, aWIFI module and a storage module; the input end of the analog-to-digital converter is connected with the output end of the analog signal conditioning circuit, and the output end of the analog-to-digital converter is connected with the input end of the waveform buffer; the input end of the digital signal processor is connected with the output end of the waveform buffer, and the output end of the digital signal processor is connected with the input end of the main controller; the main controller is in bidirectional connection with the WIFI module and the storage module; and the screen display module and the button module are electrically connected with the main controller. Via the electric energy quality analysis device, the digital signal processor can analyze harmonic waves conveniently,harmonic analysis errors caused by frequency spectrum leakage are reduced, the accuracy of harmonic analysis is improved, and requirements for informatization can met.

The invention discloses a method and system for reducing power consumption of an escorting object wearing device and a police terminal system used in cooperation with the method and system. An outgoing escorting device comprises the police terminal, the escorting object wearing device and a control platform, and point-to-point and short-distance wireless distance measurement is carried out between the police terminal and the escorting object wearing device; when the distance between the escorting object wearing device and the police terminal is in the preset safety distance, the escorting object wearing device starts a point-to-point wireless distance measurement module between the escorting object wearing device and the police terminal to measure the distance between the escorting object wearing device and the police terminal; when the distance between the escorting object wearing device and the police terminal is not in the preset safety distance, the escorting object wearing device uploads the geographical location information of the escorting object wearing device to the control platform. By means of the method and system, using time of the escorting object wearing device of the outgoing escorting device is greatly prolonged, and the accuracy of the position relation between the escorting object wearing device and the police terminal is greatly improved.

The invention discloses an illegal vehicle capturing control system and method based on the car networking and belongs to the field of intelligent transportation system vehicle supervision. In the car networking environment, when a control center monitors that an illegal vehicle passes, an oil-off instruction is sent to an illegal vehicle vehicle-mounted unit immediately through a wireless communication module, and the illegal vehicle is marked as a target vehicle; after the target vehicle receives the oil-off instruction, the target vehicle automatically starts a parking path inducing mode to select a roadside parking site. The illegal vehicle can be controlled remotely to automatically park, and the law enforcement efficiency is improved; through the parking path induction, it is ensured that under the condition of not affecting the traffic order, the illegal vehicle safely and stably parks at the appointed position; information interaction between vehicles is achieved through a wireless short-distance communication technology, a multi-vehicle synergetic self-organizing network is formed, the advantages that the networking time is short and the communication delay is small are achieved, and the requirements for the vehicle network in the rapid moving environment of the vehicle are met.

The invention relates to an internal frame of a plug, in particular to an internal frame of the plug capable of collecting riveting wire bundles in a short distance and positioning fuses. According to the invention, a core wire bundle which can enable a riveting wire part of each terminal to be riveted is mainly designed so that the bundle can be collected in one short distance; therefore, enoughconcentrated strength can be generated to carry out anti-hitching and anti-swinging tests and be convenient for the continuation of the wire riveting operation.

Disclosed is a novel simple trolley for cargo transportation. The novel simple trolley is characterized by comprising a rear universal wheel, a cargo bearing plate, a bottom support plate and a forward unidirectional wheel; the bottom support plate is arranged at the front end of the cargo bearing plate, the forward unidirectional wheel is arranged on the front lower side of the cargo bearing plate, a cross beam is arranged on the upper side of the cargo bearing plate, an armrest is arranged above the cross beam, a rubber handle is arranged on the armrest, a supporting pillar is arranged on the lower side of the cross beam, a supporting rod is arranged between the supporting pillar and the cargo bearing plate, a steering disc is arranged on the lower side of the supporting pillar, the rear universal wheel is arranged on the lower side of the steering disc, an electronic scale is arranged on the supporting pillar, a display screen is arranged on the electronic scale, and an input panel is arranged on one side of the display screen. The novel simple trolley has the advantages that transport performance of the trolley is improved, manufacturing cost is lowered, the trolley can be operated in places where motor vehicles are inconvenient in use, great convenience is brought to carrying lighter items at short distances, and handling is facilitated.