39results about How to "Reduce excessive noise" patented technology

The invention discloses a method for constructing industrial knowledge map based on industrial chain, which relates to the technical field of knowledge map in artificial intelligence. Firstly, the industrial chain is modeled, and then the industrial knowledge map is constructed according to the constructed industrial chain model. The industry knowledge map based on the industry chain established by the technical proposal of the embodiment of the invention can clearly reflect the entity-relation-entity and ' entity-eroperties-attribute value ' between the industry chains and within the industrychains, can facilitate financial researchers to further use knowledge mapping to study industrial chain conduction and event driving to find important events, to analyze information emotion and so on; The construction of industry knowledge map based on industry chain can effectively reduce the problem of excessive noise in the process of industry knowledge extraction, and the cold start problem of knowledge extraction can be avoided by using feature thesaurus to construct entity relationship.The embodiment scheme can realize incremental knowledge learning and effectively reduce the dependenceon professional researchers.

A bolometric detector for electromagnetic radiation comprising a sensitive part or membrane comprising one or more layers of a sensitive material, the resistivity of which varies with temperature; first electric conductor elements in electrical continuity with a readout circuit associated with the bolometric detector and acting as electrodes for the detector and being in contact with the sensitive material and acting as an electromagnetic radiation absorber; second electric conductor elements at a floating potential acting only as an electromagnetic radiation absorber; at least one support area for the sensitive part fulfilling the function of positioning the sensitive part and electric conductor in relation to the readout circuit; at least one thermal isolation structure electrically and mechanically linking each support area to the sensitive part. The conductor elements are distributed as two crossed, superimposed networks of conductive tracks, the first of the two networks comprising all the first conductor elements.

An impact mill including a base portion on which is disposed a rotor rotatably mounted in a bearing housing, the rotor having an upwardly aligned cylindrical surface portion coaxial with the rotational axis. The impact mill is provided with a mill casing within which is located a conical track assembly which surrounds the rotor to form a conical grinding path. The mill casing is provided with a downwardly aligned cylindrical collar which may be axially adjusted to set a grinding gap between the rotor and the mill casing. The rotor is provided with a plurality of impact knives complementary with a plurality of impact knives disposed on the inside top surface of the mill casing. In addition, the impact mill can be formed of separated conical sections. Finally, power is transmitted to the rotor of the impact mill by a synchronous sprocketed belt, accommodated by a sprocketed drive sheave, wherein the belt is in communication with a power source.

A generator system includes a DC battery, an inverter, AC motor and a generator. The generator is use to transmit power to an alternating current source, such as an entire house, a refrigerator, a TV, etc. In order to run the generator, a DC battery is connected to an AC motor to supply energy so that the motor can run the generator. An inverter is introduced between the DC battery and the AC motor to change direct current to alternate current. The DC battery is charged in different ways, such as using part of the power generated by the generator or a battery charger or a 12VDC generator.

According to the NOMA-based Internet of Vehicles resource allocation method provided by the invention, the access capability of the network can be effectively improved, and the total transmission rateof all users is significantly improved. According to the method, firstly, a clustering concept is introduced, users are merged into clusters by a base station according to geographic positions of VUEusers, and the users in the same cluster can share the same spectrum resource. Then, in order to reduce the co-channel interference of the CUE and the V2V; CUE users and a VUE user cluster sharing the same spectrum resource are determined by adopting a Hungary algorithm, finally, the suboptimal transmitting power of each V2V sender in the VUE user cluster is obtained by adopting particle swarm optimization iterative optimization on the non-convex problem in the VUE user cluster, and the corresponding suboptimal VUE throughput is calculated. According to the method, the NOMA is applied to theV2V unicast users in communication between vehicles, the total throughput of the V2V users reaches the maximum value on the basis of ensuring the service quality of V2I and V2V communication, and a new thought is provided for the V2X resource allocation problem under the NOMA.

In a tensioner having a ratchet mechanism composed of annular teeth on a plunger and an expansible resilient ring disposed in a groove formed in the inner peripheral surface of a plunger-accommodating hole in a tensioner housing, the rear surfaces of the annular teeth have a steep slope, and the front surfaces of the annular teeth have a gradual slope with a convex curvature such that the rate of change of the slope decreases proceeding in the direction of retraction of the plunger.

A motor coupling device for connecting a drivetrain of a hybrid vehicle to a motor and transferring a driving torque of the motor to the drivetrain, the motor coupling device comprising: a coupling plate connected to a rotation shaft of the motor and engaging with a connecting plate of the drivetrain; and a first backlash compensation unit installed at one surface of the coupling plate, interfering with the connecting plate, and compensating for backlash when a motor reverse torque is generated.

An avalanche photodiode including an absorption region, a collection region and a multiplication region between the absorption region and the collection region that performs a carrier multiplication by impact ionisation of a single type of carrier. The multiplication region includes a plurality of multilayer structures where each multilayer structure includes, from the absorption region to the collection region, an acceleration layer having a first energy band gap then a multiplication layer having a second energy band gap. The first energy band gap is greater than the second energy band gap.

The invention relates to the technical field of superconducting electronics, in particular to a superconducting transition edge detector and a preparation method thereof. According to the preparation method provided by the invention, a cut-off layer, a thin film layer, a superconducting material layer, a normal metal strip and/or a normal metal point, a heat sink piece, an absorber and other components are prepared on a substrate in sequence. In the invention, in order to alleviate the problem that a twisted broken line appears at a superconducting transition edge, a normal metal strip grows above a superconducting thin film of a TES detector and some normal metal points are properly added, and in order to reduce the complexity during preparation of the detector and solve the problem of superconductor quenching, an absorber is in direct contact with a superconducting material layer (superconducting thin film), the thickness of a molybdenum thin film is increased when the superconducting thin film is prepared, and the superconducting transition temperature of the detector is regulated and controlled through two sub-layers of the superconducting material layer and three layers of thin films of the absorber.

This invention proposes the use of a thermodynamic screen placed under the electronic devices whose excess noise is to be reduced in order to block the transverse currents between said devices and subjacent layers that are responsible for the aforementioned excess noise. For epitaxial layers as those used in Microelectronics, the barrier layer (2) with an opposed doping to the epilayer supporting the devices (4), and the non-doped separating layer (3) form the thermodynamic screen which, embedded between the epilayer (4) and the substrate (1), reduces the aforementioned transverse currents and thus the excess noise of the devices on the epilayer (4) when they are biased. The connection between the ohmic contact (7) of the screen layer (2) with the source (6) of the FET transistors of the epilayer (4) (dashed line) or with their gate (5) removes the thermal noise of the capacitor that existed under those FET transistors and hence, the corresponding excess noise in these devices