37results about How to "Overcome mutual interference" patented technology

The invention discloses a multi-soldier military training assessment system based on large space virtual reality. The system is composed of a large military training assessment space, wearable hardware equipment and military training assessment modules. The large space being a real military training field that is provided with real physical equipment and is built based on real scenes consists of areal scene action area, real scene military fortifications and a scalable laser positioning unit. The wearable hardware equipment that is worn by trained soldiers includes virtual reality data military helmets, data military tactical vests, data military jackets, data weapons and data military boots. The military training assessment module loaded in pack hosts consist of virtual scene display modules, training task selection modules, military training flow modules and military training assessment modules. Therefore, on the basis of the large space laser positioning technology, the virtual reality technology, the body motion capture technology, and the computer network technology, the trainees can experience the real multi-soldier military training according to the virtual and real combination.

The invention discloses an intersection traffic flow detection method and device based on a directional antenna. The method comprises the following steps: sending signals by using a vehicle-mounted broadcast unit, wherein the signals are received by a beacon receiving device to collect beacon messages of vehicles; transmitting the collected beacon messages of the vehicles to a data processing module and analyzing the beacon messages of the vehicles to realize statistics of the traffic flow and identify the traveling directions of the vehicles; transmitting traffic detection information obtained by the data processing module to a remote monitoring system through a wireless transmission module so as to realize statistics of the traffic flow and remote monitoring; storing information in the monitoring system by using a data storage module. According to the method and device, the traffic flow is detected by using the directional antenna, so that the defects that mutual interference easily happens and the detection range is narrow in a conventional method adopting Bluetooth and the like are overcome; the coverage of the directional antenna is wide, so that the detection of traffic flow is relatively accurate and the traffic flow is accurately measured under the specific conditions that vehicles turns in the intersection regions.

The invention discloses an MIMO-EDM wireless communication system and method. The MIMO-EDM wireless communication system comprises a hybrid system and a separation system. Multiple-input multiple-output technology and MIMO technology are combined, and multiple paths of signals can be separated from entropy domains by using an entropy division multiplexing algorithm. The MIMO-EDM wireless communication method comprises the following processes: transmitting n paths of source signals; receiving the aliasing signals through a receiving end; and separating the multiple paths of aliasing signals through the separation system. According to the MIMO-EDM wireless communication system and method, the utilization rate of spectrum resources and the capacity of wireless channels are improved; negentropy is used as the criterion of statistical independence, and the separation of the multiple paths of aliasing signals is realized in the information entropy domains for the first time; and high-speed and high- quality broadband wireless communication is realized.

The invention relates to a combined space charge-thermally stimulated current time sharing measurement device and a method thereof. The device comprises a pulse module, a DC high voltage module, an electrode module and a data acquisition module, wherein the pulse module provides an excitation source for the electrode module and is used for converting a space charge signal into a vibration signal; the DC high voltage module provides an DC electric field for the electrode module and is used for polarizing a to-be-tested sample; the electrode module is connected with the pulse module and the DC high voltage module, temperature of the to-be-tested sample is controlled, and the space charge signal and the thermally stimulated current are further led out; the space charge signal and the thermally stimulated current of the electrode module are received by the data acquisition module and are further stored and processed. The measurement device is advantaged in that a four-electrode structure having an upper electrode, a lower electrode, a protection electrode and a current measurement electrode, and a single-pole double-throw switch are employed to carry out time sharing measurement for the space charge and the thermally stimulated current of one same to-be-tested sample, check and balance of liquid nitrogen and an electric heating loop are realized to control temperature of the to-be-tested sample, mutual interference and temperature control between two measurement modes can be solved, and combined measurement in a wide temperature scope is realized.

The invention discloses a metal foil paper using as a radio frequency identification device (RFID) label, a production method thereof and a packaging box, wherein the metal foil paper is used for wrapping objects, and comprises a base plate layer, a metal foil layer and an RFID chip, the metal foil layer and the base plate layer are laminated together, an antenna gap is arranged on the metal foil layer to form an identification antenna, and the RFID chip is arranged on the antenna gap or on a part which is right opposite to the base plate layer and the antenna gap, and is electrically connected with the metal foil layer. The production method is that: the antenna gap which is used for the identification antenna of the RFID label is arranged on the metal foil layer; and the RFID chip is arranged on the antenna gap or on the part which is right opposite to the base plate layer and the antenna gap. The metal foil paper can be also used as the RFID label, and has good directionality in identification after wrapping the objects; the metal foil paper is torn off for use, i.e. the RFID label is physically damaged, and cannot be recycled, so the anti-counterfeiting effect is better; and the original materials are fully used, so the cost is saved.

The invention relates to a steel ladle bottom argon blowing refining method. A slit type air brick and a diffuse type air brick are arranged at the circumference of the bottom of a steel ladle. The mode that at the argon blowing stirring stage of the steel ladle, large flow argon blowing is conducted on the slit type air brick and small flow argon blowing is conducted on the diffuse type air brickis adopted; one argon blowing flow is large, and the other argon blowing flow is small; and the uniform mixing effect of argon blowing stirring is improved. At the stage of conducting soft blowing for removing occluded foreign substances, the mode that the small flow argon blowing is conducted on the slit type air brick and the diffuse type air brick is adopted; the occluded foreign substance removal rate is increased; and the whole argon blowing refining time is shortened.

The invention provides a wireless communication method based on visible light colors. The wireless communication method comprises the following steps: 1) dividing a byte to be sent into three parts according to a bit number to respectively correspond to three color channels of red, green and blue; 2) encoding the bit data of the corresponding three color channels to corresponding intensity data; 3) calculating the brightness and color of emergent light according to the intensity values of the three color channels, and driving a luminescent device to emit light; 4) after receiving the visible light emitted by the luminescent device, dividing three colors of red, green and blue through an optical filter, receiving the light through intensity measurement devices of the three color channels respectively, and quantifying the light into respective intensity data values; 5) restoring the intensity data of each color channel into the bit data represented per se through a data decoding unit; and 6) synthesizing the decoded bit data into a byte. The communication method provided by the invention has the advantages of overcoming the mutual interference in multi-device communication, being capable of achieving point-to-point communication under a wireless condition, and improving the confidentiality of communication.

The invention relates to an isolated type high-speed double-power-supply switching device. The isolated type high-speed double-power-supply switching device comprises a first transformer, a second transformer, a third transformer, a fourth transformer, a first switching circuit, a second switching circuit and a control device; a primary winding of the first transformer is connected to a working power supply, and a second winding thereof is connected to a primary winding of the second transformer through the first switching circuit; a primary winding of the third transformer is connected to a reserve power supply, and a second winding thereof is connected with a primary winding of the fourth transformer through the second switching circuit; and the control device is respectively connected to the first switching circuit and the second switching circuit. As the two paths of the input power supplies are switched rapidly through the switching circuits, demands of industrial production on switching time are satisfied; and as the transformers completely isolate the two paths of the input power supplies, the problem of mutual interference of the power supplies is overcome. The isolated type high-speed double-power-supply switching device efficiently increases switching efficiency and reliability of the double power supplies, is suitable for long-term work and has a significant value in the industrial production field.

The invention discloses an automobile brake anti-failure three-control relay valve which comprises an upper body, a middle upper body, a middle lower body and a lower body, wherein the upper body and the lower body are respectively provided with an air inlet control port, and the middle upper body and the middle lower body are respectively provided with an air inlet and an air outlet. The anti-failure three-control relay valve disclosed by the invention is one constituent component of a brake system, is combined with system elements to form a brake system and can be used for timely and effectively compensating a brake moment under the conditions of blockage, component jamming, air pressure reduction and rapid leakage caused by system faults, and the purposes of remedying front wheels during front wheel failures, remedying rear wheels during rear wheel failures and remedying the whole vehicle during failures of the whole vehicle can be achieved. The automobile brake anti-failure three-control relay valve has the advantages of convenience in mounting, low loading cost, nimble operation and excellent performance, and the defects of brake failure, poor brake and the like of the traditional technologies are obviously improved; and the safe reliability of the anti-failure brake technology is improved, so that the automobile brake anti-failure three-control relay valve is quite beneficial to promotion and application.

The invention belongs to the field of cable installation, and specifically discloses an intelligent building cable bridge support installation method. The main scheme is that a puncture sleeve is fixed to the end of a cable in a threaded mode, and a pull rope is tied at the head of the puncture sleeve. The pull rope penetrates through a linearly-arranged detection ring, the cable is pulled in through the pull rope and passes through the detection ring, a hoop passes into the inner side of an upper cover through a through hole of the upper cover, so that the hoop clamps the cable, the two endsof the hoop are fixed, and the two ends of the hoop are welded to the upper cover and a bottom cover respectively. The lower portion of a linearly arranged detection rod is fixedly connected to a pullrod, the pull rod is fixedly connected to a piston rod of a push cylinder, and the push cylinder is fixed to the bottom cover. According to the method, the problems of improper methods, low quality,chaotic disorder, and mutual interference in the prior art are solved. In addition, the detection of leakage is facilitated by using the method of cable installation.

The invention discloses a multiband airborne radar antenna, which comprises a first waveband antenna array and a module assembly, which are fixed on an antenna support frame structure; a second waveband antenna array plane and a module assembly, which are fixed on the antenna support frame structure; and an Nth waveband antenna array plane and a module assembly, which are fixed on the antenna support frame structure, wherein N is greater than or equal to 3, and the first waveband, the second waveband and the Nth waveband are different. According to the multi-band airborne radar antenna provided by the invention, a plurality of waveband radar antennas are integrated in one airborne radar antenna structure, the layout is reasonable, the assembly is compact, rapid disassembly and assembly canbe realized, and the heat dissipation requirement of a high-integration assembly can be met.

The invention discloses an augmented reality optical waveguide device. The optical waveguide device comprises: a first reflecting surface, a plurality of second reflecting surfaces, and a substrate; the first reflecting surface is embedded in one end of the substrate, and an included angle between the first reflecting surface and a lower surface of the substrate is alpha; the first reflecting surface is used for coupling incident beams perpendicular to the substrate into the substrate; the plurality of second reflecting surfaces are embedded in the other end of the substrate parallel to each other at a first set distance along the longitudinal direction of the substrate; the plurality of second reflecting surfaces spaced apart from each other by a second set distance in a lateral directionof the substrate; the included angle between the second reflecting surface and the lower surface of the substrate is pi-alpha; and the plurality of second reflecting surfaces are used for respectively coupling the beams in the substrate out from the substrate in multiple front and back layers and outputting the beams into human eyes. The augmented reality optical waveguide device disclosed by theinvention increases the viewing angle of a viewer and ensures the compactness of the structure.

The invention discloses a communication coding method for a marine oil exploration acoustic locating transponder, and belongs to the technical field of the seaborne geophysical exploration. The communication coding method for the marine oil exploration acoustic locating transponder comprises the following steps: generating a source code, generating a combination code, and generating a final code, wherein in the step of generating the source code, c is a feedback coefficient and is also a characteristic multinomial coefficient, the values of the coefficients can be ''1'' or ''0'', ''1'' represents that a feedback branch is communicated, ''0'' represents that the branch is cut off, the period of a shifting register output sequence can be changed if the connection states of feedback lines are different, and the value of c determines the feedback connection and the sequence structure of the shifting register; in the step of generating the combination code, firstly, a source code optimization pair is optimized, and the combination code is obtained; and in the step of generating the final code, according to the relevant characteristic, the amount of the combination code and the balance of the combination code, selection is carried out to generate the final code. According to the communication coding method for the marine oil exploration acoustic locating transponder, which is disclosed by the invention, the noise of a receiver is lowered, the signal to noise ratio of the receiver is improved, and meanwhile, the problem of mutual interference due to the fact that a plurality of transponders simultaneously response can be effectively overcome.

The invention discloses a method, a system and a device for supporting sending of a cluster broadcast message by 5G NR, belongs to the technical field of cluster broadcast of a 5GNR system, and aims to solve the technical problem of how to realize support of 5GNR to a cluster service function. The method comprises the following steps of: adding a trunk-SearchSpace cell in a PDCCH (Packet Data Control Channel)-ConfigCommon cell, and adding an exclusive cluster service search space for a cluster service; and stipulating that the trunk-SearchSpace cell is an optional IE (Internet Explorer). The problem that a 4G broadband trunking system cannot support a 5G typical application scene can be effectively solved, and broadcast message sending of a trunking service can be well supported on a 5G NR system.

The invention discloses an uplink power adjustment method. The method comprises the following steps: receiving downlink control information (DCI); determining a target open-loop power parameter in the configured open-loop power parameters, and determining a closed-loop power parameter adjustment value according to the DCI; and determining the sending power according to the target open-loop power parameter and the closed-loop power parameter adjustment value. The invention further discloses related equipment. By adopting the embodiment of the invention, the problem of how to adjust the power when URLLC and eMBB conflict occurs during retransmission is solved.