36results about How to "Improve the effective transmission distance" patented technology

The invention discloses a deflector rod device for an aircraft engine fan blade, which comprises a handle, a front pipe section, a rear pipe section, a bracket A, a bottom plate A and a driving mechanism, wherein the handle is connected with one end of the front pipe section; an overrunning clutch is arranged at the joint of the handle and the front pipe section, and is used for limiting anticlockwise rotation of the handle; the bracket A is arranged at a position, near the joint, of the front pipe section, and is fixed on the bottom plate A via a dovetail-type chute; the other end of the front pipe section is connected with one end of the rear pipe section; and the other end of the rear pipe section is connected with the driving mechanism via a connecting shaft. The deflector rod device has the advantages of being simple in structure, easy to disassemble, and convenient for long-distance toggling of the aircraft engine fan blade.

The invention belongs to the technical field of solar batteries, in particular relating to a synergy method of a surface plasmon metallic nano-chain in a solar battery. In the process of manufacturing the solar battery, a layer of metallic nano-film consisting of the metallic nano-chain is manufactured between the back electrode and photovoltaic layer of the solar battery. An incident light is localized on the surface of the metallic nano-chain after passing through a light cathode and the photovoltaic layer to form a horizontally transmitted surface plasmon transmission mode, therefore, the effective transmission distance of the incident light at the photovoltaic layer is greatly increased, thereby, improving the absorption efficiency of the solar battery to the incident light and greatly improving the photoelectric conversion efficiency of the solar battery. The technology further has the advantages of diversified manufacturing processes, low manufacturing cost, obvious synergy effect and the like.

The invention discloses a differential output ultrasonic probe, which comprises a probe shell, an emitting wafer and a receiving wafer, the emitting wafer and the receiving wafer are both arranged on a wedge block which is arranged in the probe shell, a sound isolation layer and the wedge block are arranged between the emitting wafer and the receiving wafer, an external lead wire and an internal lead wire of the emitting wafer and an external lead wire and an internal lead wire of the receiving wafer are arranged in correspondence to the emitting wafer and the receiving wafer and are separated with each other and are arranged in insulation, and the differential output ultrasonic probe, a differential amplification integrated circuit, an emitting control circuit, an emitting circuit, an analog signal amplification processing circuit, an A / D conversion and digital processing circuit and digital control and result output constitute a signal processing device. The differential output ultrasonic probe and the signal processing device have simple structure, strong anti-jamming capability and wide application scope.

The present application provides a signal guarantee processing method, device, device, and storage medium, wherein the method includes: after the wireless device enters the connected state, detecting the antenna sensitivity of the wireless device; when the antenna sensitivity is lower than a set threshold, the The transmission signal of the wireless device is amplified to obtain the amplified transmission signal; the trigger instruction generated by the operation medium triggering the button displayed on the wireless device is obtained, and after the trigger instruction is obtained, the amplified transmission signal is for optimization. When it is detected that the sensitivity of the antenna is lower than the set threshold, the transmission signal of the wireless device is amplified. By increasing the strength of the transmission signal, the effective transmission distance of the transmission signal is increased, and the trigger command generated by the user triggering the button of the wireless device is obtained. Finally, the amplified transmission signal is optimized to further improve the communication quality of the wireless device, which can effectively ensure the long-distance communication quality of the wireless device.

The invention discloses a composite material optical fiber and a preparation method thereof. The composite material optical fiber is composed of one of metal oxide glass and compound glass and a polymer material, and comprises a metal oxide fiber core or a compound fiber core. , The polymer material filler filled between the metal oxide fiber core or the compound fiber core; wherein, the refractive index of the metal oxide glass and the compound glass are higher than the refractive index of the polymer material, and the metal oxide glass The glass and compound glass do not crystallize in the molten state; the advantages are that the preparation difficulty is low, the cost is low, the effective transmission distance is long, the flexibility is good, and the toughness is good.

The invention discloses an auto-negotiation method using a wide pulse. The method uses the wide pulse (WLP) as a negotiation pulse for auto-negotiation between the devices in the ethernet, wherein the width of the wide pulse is from 200ns to 2000ns. The adoption of the invention can effectively conduct auto-negotiation under the condition of the distance between the devices longer than 100 meter,thereby the effective transmission distance of the ethernet is effectively expanded.

A high-efficiency air filter scanning leak detection device and leak detection method, the device includes an air duct system, an air flow conversion device, a detection platform, a two-dimensional scanning mechanism, a detection system and a control system. The present invention is characterized in that it can accurately and quickly locate the leakage point, and display the distribution of the leakage point in real time in three-dimensional graphics, and meets the standard requirements.

The invention relates to a resource searching method in large scale unstructured P2P network. The method is: during course of issuance and maintenance of resource information, the nodes receives BF information, and converts according to requirement of different adjacent nodes after discarding definite ratio, and saves it in adjacent BF table; during course of searching for resource, the middle node calculates the similitude degree of object resource and adjacent resource BF table, and based on the distribution situation of BF information, parallel searching between several messages can be proceed.

The present invention provides a transmission method and device for a channel sounding signal. The method includes: receiving configuration information issued by the network side, the configuration information includes a first frequency domain pattern at the resource block level, and the first frequency domain pattern indicates a system A resource block used for transmitting a channel sounding signal within the bandwidth; sending a channel sounding signal by using the resource block indicated by the first frequency domain pattern. The method and device can improve the transmission range of the channel detection signal.

The invention discloses a photon increasing and decreasing system for improving underwater continuous variable quantum key distribution and an implementation method thereof. In the system, a dual-modecompression state is prepared in advance by using a laser, a signal source and a modulator at a transmitting end, heterodyne detection is performed on a half quantum state after the dual-mode compression state passes through a beam splitter, photon increasing operation is performed on the other half quantum state firstly, then photon decreasing operation is performed, and the quantum state afteroperation is transmitted to a receiving end through a water channel. And the receiving end demodulates the received quantum state, performs homodyne detection on the demodulated quantum state, and finally establishes a security key within an effective distance. According to the invention, the underwater continuous variable quantum key distribution technology is improved, the used quantum signal isnot easily eavesdropped by a third party, and the underwater communication security is ensured. Homodyne detection is used for filtering external interference light, a good detection effect can be achieved under the condition that external light interference exists, the effective distance of underwater continuous variable quantum key distribution is prolonged, and more practicability is brought to underwater quantum communication.