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

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 a sensor, a dual-mode touch module and a dual-mode touch electronic device. The sensor comprises an electromagnetic induction array, wherein the electromagnetic induction array comprises multiple first direction leads in combined arrangement and multiple second direction leads in combined arrangement; each of first direction leads and second direction leads comprise a first lead, a second lead and a connecting line; each connecting line is provided with a mode control switch for disconnecting the connecting line, and the control end of the mode control switch is connected with an external control component; and when the external control component controls the mode control switch to disconnect the connecting line, the corresponding first leads and second leads in the first direction lead group and the second direction lead group form a capacitive coupling touch array so as to enable the sensor to work in a capacitive coupling touch mode. The sensor can recognize signals of finger touch and electromagnetic pen touch by virtue of the same array, thus simplifying the structure of the sensor and lowering the manufacturing cost.

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.

This invention relates to one overlap structure with multiple connectors, which comprises the following parts: circuit board to supply multiple connectors with each lead leg connected to circuit board; groove tanks set on circuit board to isolate each connector in circuit board area. This invention multiple connector overlap structure can reduce circuit board area occupancy and can isolate transmission signals from each connector.

The invention discloses an automobile anti-ineffectiveness brake system which comprises an air compressor, an air filter, an air storage cylinder, an air delivery pipeline, a multiple-loop protective valve, a foot / hand brake mechanism, a relay valve, a spring energy-storage air chamber, a front-axle and / or back-axle brake, an anti-ineffectiveness brake main valve and an anti-ineffectiveness triple-control relay valve. By the automobile anti-ineffectiveness brake system, brake moment can be effectively compensated in time when in situations of system failure and blockage, component jamming, pressure reduction and quick leakage, and ineffectiveness of front wheels or ineffectiveness of back wheels or ineffectiveness of the complete automobile can be remedied. Further, the automobile anti-ineffectiveness brake system is convenient to mount, low in installation cost, flexible in operation, excellent in performance, and capable of effectively overcoming defects of ineffective brake, poor brake and the like in the prior art. In addition, with the automobile anti-ineffectiveness brake system, safety and reliability of the anti-ineffectiveness brake technology can be improved so that popularization and implementing of the anti-ineffectiveness brake technology are facilitated.

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 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.